CN114087739B

CN114087739B - Fresh air equipment control method and device, fresh air equipment and storage medium

Info

Publication number: CN114087739B
Application number: CN202111408795.6A
Authority: CN
Inventors: 徐振坤; 刘步东; 李金波; 杜顺开; 黄剑云; 高卓贤
Original assignee: GD Midea Air Conditioning Equipment Co Ltd
Current assignee: GD Midea Air Conditioning Equipment Co Ltd
Priority date: 2021-11-24
Filing date: 2021-11-24
Publication date: 2023-10-27
Anticipated expiration: 2041-11-24
Also published as: CN114087739A

Abstract

The invention discloses a fresh air equipment control method, a device, fresh air equipment and a storage medium, and relates to the technical field of air treatment, wherein the method is used for acquiring the fresh air temperature of the fresh air equipment; when the fresh air equipment is in a dehumidification mode, determining a first operation mode of the first heat exchange system and a second operation mode of the second heat exchange system according to the fresh air temperature; and driving the first heat exchange system according to the first operation mode, and driving the second heat exchange system according to the second operation mode so as to dehumidify the fresh air. According to the invention, the first operation mode of the first heat exchange system and the second operation mode of the second heat exchange system are determined according to the fresh air temperature, and the corresponding first heat exchange system and second heat exchange system are driven to dehumidify the fresh air according to the first operation mode and the second operation mode, so that the air outlet temperature adjusting capability of the fresh air equipment is improved.

Description

Fresh air equipment control method and device, fresh air equipment and storage medium

Technical Field

The invention relates to the technical field of air treatment, in particular to a fresh air equipment control method and device, fresh air equipment and a storage medium.

Background

With the continuous improvement of life quality of people, the indoor environment requirements are also improved. In order to make the indoor environment more comfortable, people need to adjust not only the indoor temperature but also the indoor humidity. At present, when most fresh air equipment is in a dehumidification reheating mode, the temperature of the air outlet temperature is usually low, and the adjustment capability is poor, so that various requirements of users are hardly met.

Disclosure of Invention

The invention mainly aims to provide a fresh air equipment control method and device, fresh air equipment and a storage medium, and aims to solve the technical problem that in the prior art, when in a dehumidification mode, the air outlet temperature adjusting capability is poor.

In order to achieve the above purpose, the invention provides a control method of fresh air equipment, wherein the fresh air equipment comprises a first heat exchange system and a second heat exchange system, the first heat exchange system is used for exchanging heat between a fresh air channel and an outdoor environment, and the second heat exchange system is used for exchanging heat between the fresh air channel and an exhaust channel;

the fresh air equipment control method comprises the following steps:

acquiring a fresh air temperature of fresh air equipment;

when the fresh air equipment is in a dehumidification mode, determining a first operation mode of the first heat exchange system and a second operation mode of the second heat exchange system according to the fresh air temperature; the method comprises the steps of,

Driving a first heat exchange system according to the first operation mode, and driving a second heat exchange system according to the second operation mode so as to dehumidify fresh air;

the first heat exchange system comprises a first compressor, a first four-way valve, a fifth heat exchanger, a first throttling element, a second throttling element, a first heat exchanger and a second heat exchanger, and the second heat exchange system comprises a second compressor, a second four-way valve, a sixth heat exchanger, a third throttling element, a fourth throttling element, a third heat exchanger and a fourth heat exchanger;

the fresh air equipment comprises a fresh air channel and an exhaust channel, wherein the first heat exchanger, the second heat exchanger, the third heat exchanger and the fourth heat exchanger are positioned in the fresh air channel, the sixth heat exchanger is positioned in the exhaust channel, and the fifth heat exchanger is an outdoor heat exchanger;

the driving the first heat exchange system according to the first operation mode and the driving the second heat exchange system according to the second operation mode comprises the following steps:

when the first operation mode is a refrigeration mode, the first throttling element works, the second throttling element does not work, and the first heat exchanger and the second heat exchanger are combined to achieve a fresh air cooling effect;

when the first operation mode is a dehumidification reheating mode, the first throttling element does not work, the second throttling element works, the second heat exchanger in the first heat exchange system is an evaporator, and the first heat exchanger is a condenser;

When the second operation mode is a refrigeration mode, the third throttling element works, the fourth throttling element does not work, and the third heat exchanger and the fourth heat exchanger are combined to achieve a fresh air cooling effect;

when the second operation mode is a dehumidification reheating mode, the third throttling element does not work, the fourth throttling element works, the fourth heat exchanger in the second heat exchange system is an evaporator, and the third heat exchanger is a condenser.

Optionally, determining the first operation mode of the first heat exchange system and the second operation mode of the second heat exchange system according to the fresh air temperature includes:

and when the fresh air temperature is smaller than a first preset target temperature, determining that the target operation mode of the fresh air equipment is a dehumidification reheating mode.

Optionally, at least one heat exchanger of the first heat exchange system is disposed in a fresh air channel, at least one heat exchanger of the second heat exchange system is disposed in the fresh air channel, at least three heat exchangers are disposed in the fresh air channel, and the determining the first operation mode of the first heat exchange system and the second operation mode of the second heat exchange system according to the fresh air temperature includes:

and when the fresh air temperature is greater than or equal to a second preset target temperature and less than a first preset target temperature, judging that at least one of the first operation mode and the second operation mode is a dehumidifying and reheating mode.

Optionally, at least two heat exchangers of the first heat exchange system are disposed in a fresh air channel, and the determining the first operation mode of the first heat exchange system and the second operation mode of the second heat exchange system according to the fresh air temperature further includes:

and when the fresh air temperature is greater than or equal to a third preset target temperature and less than a second preset target temperature, judging that the first operation mode is a dehumidification reheating mode, and the second operation mode is a stopping mode.

and when the fresh air temperature is greater than or equal to a fourth preset target temperature and less than the third preset target temperature, judging that the first operation mode is a stop mode, and judging that the second operation mode is a dehumidification reheating mode.

Optionally, the determining the first operation mode of the first heat exchange system and the second operation mode of the second heat exchange system according to the fresh air temperature further includes:

and when the fresh air temperature is smaller than a fourth preset target temperature, judging that the first heat exchange system is in a dehumidification reheating mode, and judging that the second heat exchange system is in a heating mode.

Optionally, the area of the first heat exchanger is less than or equal to 50% of the area of the fifth heat exchanger; the area of the third heat exchanger is less than or equal to 150% of the area of the sixth heat exchanger.

Optionally, after the first heat exchange system is driven according to the first operation mode and the second heat exchange system is driven according to the second operation mode to dehumidify the fresh air, the method includes:

when the first operation mode is a dehumidification reheating mode, acquiring the first coil temperature of the second heat exchanger and/or the second coil temperature of the fourth heat exchanger; the method comprises the steps of,

when the first coil temperature is higher than a first preset coil temperature, regulating the rotating speed of the first compressor or the opening degree of the second throttling element so that the first coil temperature is lower than or equal to the first preset coil temperature;

when the second operation mode is a dehumidification reheating mode, acquiring the temperature of a second coil of the fourth heat exchanger; the method comprises the steps of,

and when the second coil temperature is higher than a second preset coil temperature, adjusting the rotating speed of the second compressor or the opening degree of the fourth throttling element so that the second coil temperature is lower than or equal to the second preset coil temperature.

Optionally, after adjusting the rotation speed of the second compressor or the opening degree of the fourth throttling element so that the second coil temperature is the second preset coil temperature, the method includes:

Acquiring the air outlet temperature of the fresh air equipment;

when the air outlet temperature is smaller than the target temperature and the second operation mode is a dehumidifying and reheating mode or a heating mode, adjusting the rotating speed of a second fan, the rotating speed of a second compressor or the opening degree of a throttling element so as to improve the air outlet temperature to be the target temperature; the method comprises the steps of,

and when the air outlet temperature is smaller than the target temperature and the second operation mode is the stop mode, adjusting the rotation speed of the first fan, the rotation speed of the first compressor or the opening degree of the second throttling element so as to improve the air outlet temperature to be the target temperature.

In addition, in order to achieve the above purpose, the present invention also provides a fresh air device, the fresh air device includes: the fresh air equipment, the memory, the processor and the fresh air equipment control program stored in the memory and capable of running on the processor.

In addition, in order to achieve the above purpose, the present invention further provides a storage medium, on which a fresh air device control program is stored, and when the fresh air device control program is executed by a processor, the fresh air device control method is implemented as described above.

In order to achieve the above object, the present invention further provides a fresh air device control apparatus, including:

The temperature detection module is used for acquiring the fresh air temperature of the fresh air equipment;

the mode determining module is used for determining a first operation mode of the first heat exchange system and a second operation mode of the second heat exchange system according to the fresh air temperature when the fresh air equipment is in a dehumidification mode; the method comprises the steps of,

the state adjusting module is used for driving the first heat exchange system according to the first operation mode and driving the second heat exchange system according to the second operation mode to dehumidify fresh air;

the state adjusting module is further used for adjusting the first throttling element to work and the second throttling element to be not work when the first operation mode is a refrigeration mode, and the first heat exchanger and the second heat exchanger are combined to achieve a fresh air cooling effect;

the state adjusting module is further used for adjusting the first throttling element to be not operated and the second throttling element to be operated when the first operation mode is a dehumidification reheating mode, wherein the second heat exchanger in the first heat exchange system is an evaporator, and the first heat exchanger is a condenser;

the state adjusting module is further used for adjusting the third throttling element to work when the second operation mode is a refrigeration mode, the fourth throttling element does not work, and the third heat exchanger and the fourth heat exchanger are combined to achieve a fresh air cooling effect;

The state adjusting module is further used for adjusting the third throttling element to be not operated and the fourth throttling element to be operated when the second operation mode is a dehumidification reheating mode, and the fourth heat exchanger in the second heat exchange system is an evaporator and the third heat exchanger is a condenser.

According to the invention, the fresh air equipment comprises a first heat exchange system and a second heat exchange system, the fresh air equipment comprises the first heat exchange system and the second heat exchange system, the first heat exchange system is used for exchanging heat between a fresh air channel and an outdoor environment, and the second heat exchange system is used for exchanging heat between the fresh air channel and an exhaust channel; the fresh air temperature of the fresh air equipment is obtained; when the fresh air equipment is in a dehumidification mode, determining a first operation mode of the first heat exchange system and a second operation mode of the second heat exchange system according to the fresh air temperature; and driving the first heat exchange system according to the first operation mode, and driving the second heat exchange system according to the second operation mode so as to dehumidify the fresh air. According to the invention, the first operation mode of the first heat exchange system and the second operation mode of the second heat exchange system are determined according to the fresh air temperature, and the corresponding first heat exchange system and second heat exchange system are driven to dehumidify the fresh air according to the first operation mode and the second operation mode, so that the air outlet temperature adjusting capability of the fresh air equipment is improved.

Drawings

FIG. 1 is a schematic structural diagram of a fresh air device in a hardware operating environment according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of an embodiment of the fresh air device of the present invention;

FIG. 3 is a schematic flow chart of a first embodiment of a method for controlling fresh air equipment according to the present invention;

FIG. 4 is a schematic flow chart of a second embodiment of the method for controlling fresh air equipment according to the present invention;

FIG. 5 is a schematic flow chart of a third embodiment of a method for controlling fresh air equipment according to the present invention;

FIG. 6 is a schematic flow chart of a fourth embodiment of a method for controlling fresh air equipment according to the present invention;

fig. 7 is a block diagram of a first embodiment of the fresh air equipment control device of the present invention.

Reference numerals illustrate:

the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a fresh air device in a hardware operating environment according to an embodiment of the present invention.

As shown in fig. 1, the fresh air device may include: a processor 1001, such as a central processing unit (Central Processing Unit, CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein the communication bus 1002 is used to enable connected communication between these components. The user interface 1003 may include a Display (Display), and the optional user interface 1003 may also include a standard wired interface, a wireless interface, and the wired interface for the user interface 1003 may be a USB interface in the present invention. The network interface 1004 may optionally include a standard wired interface, a Wireless interface (e.g., a Wireless-Fidelity (Wi-Fi) interface). The Memory 1005 may be a high-speed random access Memory (Random Access Memory, RAM) Memory or a stable Memory (NVM), such as a disk Memory. The memory 1005 may also optionally be a storage device separate from the processor 1001 described above. The fresh air equipment is used for extracting air from the outdoor environment, processing the air and then transmitting the processed air to the indoor environment as fresh air.

It will be appreciated by those skilled in the art that the configuration shown in FIG. 1 is not limiting and may include more or fewer components than shown, or certain components may be combined, or a different arrangement of components.

As shown in fig. 1, the memory 1005, which is considered to be a computer storage medium, may include an operating system, a network communication module, a user interface module, and a fresh air device control program.

In the fresh air device shown in fig. 1, the network interface 1004 is mainly used for connecting to a background server, and performing data communication with the background server; the user interface 1003 is mainly used for connecting user equipment; the fresh air equipment invokes a fresh air equipment control program stored in the memory 1005 through the processor 1001, and executes the fresh air equipment control method provided by the embodiment of the invention.

Referring to fig. 2, fig. 2 is a schematic structural diagram of an embodiment of the fresh air device of the present invention. In order to more clearly illustrate the fresh air equipment control method, the invention provides fresh air equipment and executes the fresh air equipment control method on the basis of the fresh air equipment.

As shown in fig. 2, the fresh air device may have a first heat exchange system and a second heat exchange system. The first heat exchange system may include a first compressor C1, a first four-way valve V1, a fifth heat exchanger H5, a first throttling element K1, a second throttling element K2, a first heat exchanger H1, and a second heat exchanger H2. The second heat exchange system may include a second compressor C2, a second four-way valve V2, a sixth heat exchanger H6, a third throttling element K3, a fourth throttling element K4, a third heat exchanger H3, and a fourth heat exchanger H4.

Wherein the first to fourth throttling elements may be electronic expansion valves. The second heat exchanger H2 and the fourth heat exchanger H4 can be used for cooling and dehumidifying fresh air, and the first heat exchanger H1 and the third heat exchanger H3 can be used for heating the fresh air. Here, it should be understood that in the fresh air device, the first heat exchanger H1 and the third heat exchanger H3 may not be disposed at the same time, for example, when only one heat exchanger is required to heat fresh air, one of the first heat exchanger H1 and the third heat exchanger H3 may be disposed according to a specific operation mode of the first heat exchange system and the second heat exchange system. In addition, in the scheme, more stages of heat exchangers or heat exchange systems can be arranged. When more stages of heat exchange systems are arranged, at least two heat exchangers are required to be correspondingly arranged in the fresh air channel. In the case of more stages of heat exchangers, a plurality of heat exchangers for increasing the temperature may be provided in each system.

In the specific setting process, in order to ensure the requirements of different air outlet temperatures and energy conservation, the area of the first heat exchanger H1 can be set to be less than or equal to 50% of the area of the fifth heat exchanger H5; the area of the third heat exchanger H3 is set to 150% or less of the area of the sixth heat exchanger H6.

In this scheme, through configuration two-way flow's first heat transfer system and second heat transfer system, form 2 sets of air source heat pump cycle, make fresh air equipment possess two sets of different condensation temperature and evaporation temperature, on this system structure basis, to the refrigeration of fresh air equipment and the energy-conserving demand of adjusting temperature of reheat dehumidification, through switching over cross valve and control throttling element to the system, realize refrigeration, heat and reheat dehumidification mode under the dehumidification mode.

In addition, the first heat exchange system and the second heat exchange system can also share a multi-cylinder compressor. Specifically, the fresh air device comprises a compressor with two independent cylinders. The first cylinder in the compressor is connected with a first four-way valve V1, a fifth heat exchanger H5, a first throttling element K1, a first heat exchanger H1, a second throttling element K2 and a second heat exchanger H2 to form a first heat exchange system. The second cylinder in the compressor is connected with a second four-way valve V2, a sixth heat exchanger H6, a third throttling element K3, a third heat exchanger H3, a fourth throttling element K and a fourth heat exchanger H4 to form a second heat exchange system.

It should be noted that the fresh air device further has a fresh air channel 10 and an air exhaust channel 20, the fresh air channel 10 is used for inputting fresh air into the room, and the air exhaust channel 20 is used for outputting air out to the outside. The fifth heat exchanger H5 in the first heat exchange system is an outdoor heat exchanger, and the first heat exchanger H1 and the second heat exchanger H2 can be positioned in the fresh air channel 10 and are used for carrying out heat exchange treatment on fresh air; the sixth heat exchanger H6 in the second heat exchange system may be located in the exhaust channel 20, and the third heat exchanger H3 and the fourth heat exchanger H4 may be located in the fresh air channel 10, which is also used for processing fresh air. Correspondingly, the first heat exchange system further comprises a first fan Y1 corresponding to the fifth heat exchanger H5, and the fan is used for realizing heat exchange between the refrigerant in the fifth heat exchanger H5 and the outdoor environment. The fresh air channel 10 is also provided with a third fan Y3, and the third fan Y3 is used for extracting air from the outdoor environment into the fresh air channel 10. The exhaust passage 20 is further provided with a second fan Y2, and the second fan Y2 is configured to draw air from the indoor environment into the exhaust passage 20. The first fan Y1 is an outdoor fan, the second fan Y2 is an exhaust fan, and the third fan Y3 is a fresh air fan.

The working principle of the fresh air equipment is as follows: the third fan Y3 extracts fresh air from the outdoor environment, and the fresh air sequentially passes through the first heat exchanger H1, the third heat exchanger H3, the fourth heat exchanger H4 and the second heat exchanger H2 to exchange heat four times and then is conveyed to the indoor environment. The second fan Y2 extracts exhaust air from the indoor environment, and the exhaust air is conveyed to the outside after primary heat exchange through the sixth heat exchanger H6. The fresh air equipment can have a refrigerating mode and a heating mode, wherein the refrigerating mode refers to that fresh air is conveyed into a room after being cooled and/or dehumidified through the first heat exchanger H1, the second heat exchanger H2, the third heat exchanger H3 and the fourth heat exchanger H4; the heating mode is to heat fresh air through the first heat exchanger H1, the second heat exchanger H2, the third heat exchanger H3 and the fourth heat exchanger H4 and then convey the fresh air into a room.

It should be understood that, during the cooling operation of the first heat exchange system, the cooling circulation flow direction in the first heat exchange system is the first compression C1, the first four-way valve V1, the fifth heat exchanger H5, the first throttling element K1, the first heat exchanger H1, the second throttling element K2, the second heat exchanger H2, the first four-way valve V1 and finally returns to the first compression C1. When the first heat exchange system is in heating operation, the circulation flow direction of the cooling fluid in the first heat exchange system is the first compression C1, the first four-way valve V1, the second heat exchanger H2, the second throttling element K2, the first heat exchanger H1, the first throttling element K1, the fifth heat exchanger H5 and the first four-way valve V1, and finally returns to the first compression C1.

During the refrigerating operation of the second heat exchange system, the circulating flow direction of the refrigerant in the second heat exchange system is the second compression C2, the second four-way valve V2, the sixth heat exchanger H6, the third throttling element K3, the third heat exchanger H3, the fourth throttling element K4, the fourth heat exchanger H4 and the second four-way valve V2, and finally returns to the second compression C2. During the heating operation of the second heat exchange system, the circulation flow direction of the refrigerant in the second heat exchange system is the second compression C2, the second four-way valve V2, the fourth heat exchanger H4, the fourth throttling element K4, the third heat exchanger H3, the third throttling element K3, the sixth heat exchanger H6 and the second four-way valve V2, and finally returns to the second compression C2.

Based on the hardware structure, the embodiment of the fresh air equipment control method is provided.

Referring to fig. 3, fig. 3 is a schematic flow chart of a first embodiment of a fresh air device control method according to the present invention.

In the first embodiment, the fresh air equipment control method may be applied to the fresh air equipment as described above.

The fresh air equipment control method specifically comprises the following steps:

step S10: and acquiring the fresh air temperature of the fresh air equipment.

It should be understood that the execution body of the present embodiment is the above-described fresh air device, which has functions of image processing, data communication, program running, and the like, and each component in the fresh air device is generally controlled by a core controller, so the execution body of the present embodiment may also be the controller, and in the present embodiment, the controller is used as the execution body to describe.

It should be noted that the fresh air temperature refers to the temperature of the fresh air input from the input end of the fresh air channel. Fresh air is input into the fresh air channel from the outdoor environment by a third fan in the fresh air channel.

Under the condition that the fresh air temperature is known, the controller can determine the running state of the fresh air equipment according to the fresh air temperature. For example, the indoor temperature is set to 25 ℃, when the fresh air temperature is higher than 25 ℃, the fresh air equipment needs to cool the fresh air, and at the moment, the fresh air equipment is in a refrigeration mode; and similarly, when the fresh air temperature is higher than 25 ℃, the fresh air equipment is in a heating mode.

In a specific implementation, the controller can collect the fresh air temperature through a temperature sensor arranged at the third fan.

Step S20: when the fresh air equipment is in a dehumidification mode, a first operation mode of the first heat exchange system and a second operation mode of the second heat exchange system are determined according to the fresh air temperature.

It should be noted that the fresh air device includes a plurality of operation modes, such as a cooling mode, a heating mode, a dehumidifying and reheating mode, and the like. The dehumidification reheat mode of the fresh air device refers to a mode in which the fresh air is dehumidified and then heated.

The operation modes of the heat exchange system comprise a refrigerating operation mode and a heating operation mode, and the heat exchange system can be in a closed state when the heat exchange system does not work. The first operation mode and the second operation mode refer to a target working mode of the first heat exchange system and a target working mode of the second heat exchange system respectively when the fresh air equipment operates in a dehumidification mode. The target operation modes of the fresh air device comprise a first operation mode of the first heat exchange system and a second operation mode of the second heat exchange system.

It should be understood that under the influence of the fresh air temperature, the first heat exchange system and the second heat exchange system can be simultaneously in a dual-system refrigeration mode of a refrigeration mode, a single-system refrigeration mode of the first heat exchange system or the second heat exchange system in the refrigeration mode, or a combined mode of the first heat exchange system in the refrigeration mode and the second heat exchange system in the heating mode.

In a specific implementation, when the fresh air device is in the dehumidification mode, the controller can compare the fresh air temperature with a set temperature value and divide the fresh air temperature threshold into different temperature intervals. When the fresh air temperature is in different temperature intervals, the first heat exchange system and the second heat exchange system are in different operation modes. For example, when the fresh air temperature is in a higher temperature interval, the first heat exchange system and the second heat exchange system can be in a refrigeration mode at the same time, and dehumidification and reheating can be realized more quickly. Similarly, when the fresh air temperature is in a lower temperature interval, the first heat exchange system can be in a refrigeration mode for dehumidification, and the second heat exchange system can be in a heating mode, so that the air outlet temperature reaches the target temperature as soon as possible.

Step S30: and driving the first heat exchange system according to the first operation mode, and driving the second heat exchange system according to the second operation mode so as to dehumidify the fresh air.

The heat exchanger is a heat exchanger in the fresh air channel. The heat exchanger can regulate the temperature and the humidity of the fresh air input by the fresh air channel input end, and output the air outlet with target temperature and humidity by the fresh air channel output end.

It should be understood that the conditions of the heat exchanger include a condensing condition and an evaporating condition. The condensing state is used for heating the wind flowing through the heat exchanger, and the evaporating state is used for cooling the wind flowing through the heat exchanger. In this embodiment, at least one heat exchange system includes two heat exchangers within the fresh air channel. For example, the first heat exchange system comprises two heat exchangers in the fresh air channel, namely a first heat exchanger and a second heat exchanger, wherein the first heat exchanger can preheat or reheat fresh air, and the second heat exchanger can cool and dehumidify the preheated or reheated fresh air. Of course, the second heat exchange system may also comprise two heat exchangers in the fresh air channel, namely a third heat exchanger and a fourth heat exchanger.

In a specific implementation, the controller may adjust the operating parameters of the first throttling element, the second throttling element, or the first compressor in the first heat exchange system according to the first operation mode to realize the adjustment of the operating states of the first heat exchanger and the second heat exchanger. The controller can also determine to adjust the operation parameters of the third throttling element, the fourth throttling element or the second compressor in the second heat exchange system according to the second operation mode, so as to adjust the working states of the third heat exchanger and the fourth heat exchanger, and further drive the first heat exchange system through the first operation mode and drive the second heat exchange system through the second operation mode.

Wherein the throttling element comprises first to fourth throttling elements. The first throttling element is used for adjusting the refrigerants in the fifth heat exchanger and the first heat exchanger, and the second throttling element is used for adjusting the refrigerants between the first heat exchanger and the second heat exchanger; the third throttling element is used for controlling the refrigerant between the sixth heat exchanger and the third heat exchanger, and the fourth throttling element is used for adjusting the refrigerant between the third heat exchanger and the fourth heat exchanger. In the embodiment of the application, the operation of the throttling element can be understood as that the throttling element plays a role in throttling and reducing pressure in a refrigerant loop of the heat exchange system.

The non-operation of the throttling element can be understood as:

the throttling element is fully opened in a refrigerant loop of the heat exchange system;

or, the throttling element (non-working throttling element) does not have a throttling and depressurizing function mainly relative to the throttling element working in the refrigerant loop, for example, the throttling element working in the refrigerant loop has a throttling and depressurizing function mainly, and the throttling and depressurizing function of the throttling element working in the refrigerant loop is not obvious or has a flow regulating function mainly;

alternatively, the refrigerant in the refrigerant circuit passes through a bypass passage connected in parallel with the throttle element, instead of passing through the throttle element, and an on-off solenoid valve may be provided in the bypass passage.

In a first embodiment, the fresh air device has first and second heat exchange systems. Through obtaining the new trend temperature of new trend equipment, confirm first heat transfer system and the corresponding first mode of operation and the second mode of operation of second heat transfer system according to new trend temperature, then drive first heat transfer system according to first mode of operation, drive second heat transfer system according to the second mode of operation, dehumidify the new trend through two heat transfer systems to improve the air-out temperature regulation ability of new trend equipment.

Referring to fig. 4, fig. 4 is a schematic flow chart of a second embodiment of the fresh air equipment control method according to the present invention, and based on the first embodiment shown in fig. 3, the second embodiment of the fresh air equipment control method according to the present invention is proposed.

In a second embodiment, before the step S20, the method further includes:

step S101': and when the fresh air temperature is smaller than a first preset target temperature, determining that the target operation mode of the fresh air equipment is a dehumidification reheating mode.

The first preset target temperature is a preset temperature for determining the working mode of the fresh air device. The range of the first preset target temperature may be between 10 degrees celsius and 30 degrees celsius. The first preset target temperature may be set according to a specific scenario.

It should be understood that when the fresh air device is in the refrigeration mode and the dehumidification reheat mode, at least one heat exchanger exists in the fresh air channel and is in an evaporation heat absorption state. For example, in the refrigeration mode, two heat exchangers in the fresh air channel jointly achieve a cooling effect (in an evaporation heat absorption state) on the fresh air, or all heat exchangers in the fresh air channel jointly cool the fresh air so that the temperature of the outlet air is lower than that of the fresh air, at the moment, at least one heat exchanger is used for cooling the fresh air in the fresh air channel, and the heat exchangers can be used for heating the fresh air; in the dehumidifying and reheating mode, at least one heat exchanger is arranged in the fresh air channel for cooling fresh air to dehumidify, at least one heat exchanger is arranged in the fresh air channel for preheating or reheating fresh air, and the heat exchanger positioned at the upstream in the fresh air channel is used for cooling and dehumidifying, and the heat exchanger positioned at the downstream is used for reheating fresh air. In this embodiment, the first preset target temperature is mainly used for determining a cooling mode and a dehumidifying and reheating mode of the fresh air device.

In a specific implementation, the controller may compare the fresh air temperature with a first preset target temperature to obtain a first comparison result. The first comparison result comprises a comparison result that the fresh air temperature is larger than or equal to the first preset target temperature and a comparison result that the fresh air temperature is smaller than the first preset target temperature.

In this embodiment, when the first comparison result is that the fresh air temperature is greater than or equal to the first preset target temperature, the fresh air device with the excessive fresh air temperature should operate in the cooling mode. When it is determined that the fresh air equipment should operate in the cooling mode, the relevant component parameters should be adjusted to cause the fresh air equipment to reduce the fresh air temperature as quickly as possible and return to re-compare the fresh air temperature with the first preset target temperature. When the first comparison result is that the fresh air temperature is smaller than the first preset target temperature, the fresh air equipment is required to directly operate in a dehumidifying and reheating mode. For example, when the fresh air temperature is 25 ℃, the humidity is 18g/kg, the user sets a refrigeration mode, the temperature is 25 ℃, and the humidity is 10g/kg, and then the dehumidification reheating mode is entered.

In the second embodiment, whether the fresh air temperature is smaller than the first preset target temperature is determined by comparing the set fresh air temperature with the first preset target temperature, so that whether the fresh air equipment directly enters a dehumidification reheating working mode is determined, and the air outlet temperature adjusting capability of the fresh air equipment is improved rapidly.

Referring to fig. 5, fig. 5 is a schematic flow chart of a third embodiment of the method for controlling a fresh air device according to the present invention, and the third embodiment of the method for controlling a fresh air device according to the present invention is proposed based on the first embodiment shown in fig. 3 or the second embodiment described in fig. 4.

In a third embodiment, the step S20 includes:

step S201: and when the fresh air temperature is greater than or equal to a second preset target temperature and less than a first preset target temperature, judging that at least one of the first operation mode and the second operation mode is a dehumidifying and reheating mode.

It should be appreciated that the first heat exchange system and the second heat exchange system may each comprise two heat exchangers within the fresh air channel. The two heat exchangers in the first heat exchange system are a first heat exchanger and a second heat exchanger respectively, and the two heat exchangers in the second heat exchange system are a third heat exchanger and a fourth heat exchanger respectively.

It is understood that the first to fourth heat exchangers refer to all heat exchangers included in the first heat exchange system and the second heat exchange system in the fresh air passage. In the adjusting process, adjusting the operation states of the first heat exchanger and the second heat exchanger in the first heat exchange system according to the first operation mode; and adjusting the operation states of the third heat exchanger and the fourth heat exchanger in the second heat exchange system according to the second operation mode.

The second to fourth preset target temperatures are temperatures preset to determine a target temperature range in which the fresh air temperature is located. The second to fourth preset target temperatures are each between 10 degrees celsius and 30 degrees celsius. The target temperature interval is a temperature interval for determining the operation modes of the first heat exchange system and the second heat exchange system. When the fresh air temperature is in different target temperature intervals, the working modes of the first heat exchange system and the second heat exchange system are different. The target temperature ranges are all in a temperature range between 10 degrees celsius and 30 degrees celsius.

It should be understood that when the fresh air temperature is greater than or equal to the second preset target temperature, the fresh air temperature is too high at this time, and the first heat exchange system and the second heat exchange system may both be set to the dehumidification reheat mode. The first heat exchanger in the first heat exchange system is a condenser for preheating fresh air, and the second heat exchanger is an evaporator for cooling dehumidifying fresh air; the third heat exchanger in the second heat exchange system is a condenser and is used for reheating fresh air, and the fourth heat exchanger is an evaporator and is used for cooling and dehumidifying fresh air.

In a specific implementation, a higher temperature may be selected between 10 degrees celsius and 30 degrees celsius as the second preset target temperature, and then the fresh air temperature is compared with the second preset target temperature, so as to determine whether the fresh air temperature is less than the second preset target temperature. And when the fresh air temperature is greater than or equal to a second preset target temperature, judging that the first heat exchange system is in a dehumidification reheating mode, and judging that the second heat exchange system is in the dehumidification reheating mode. When the first heat exchange system and the second heat exchange system are both in a dehumidifying and reheating mode, the controller can enable the first heat exchanger to preheat fresh air for the condenser by adjusting the first throttling element to be not operated; the second heat exchanger is used for cooling and dehumidifying fresh air for the evaporator by adjusting the throttling and depressurization of the second throttling element; the third heat exchanger is enabled to reheat fresh air for the condenser by adjusting the non-working of the third throttling element; and the fourth heat exchanger is used for cooling and dehumidifying fresh air for the evaporator by adjusting the throttling pressure reduction of the fourth throttling element.

Step S202: and when the fresh air temperature is greater than or equal to a third preset target temperature and less than a second preset target temperature, judging that the first operation mode is a dehumidification reheating mode, and the second operation mode is a stopping mode.

The third preset target temperature is a temperature for determining whether the fresh air temperature is in a target temperature region between the third preset target temperature and the second preset target temperature. The third preset target temperature is less than the second preset target temperature.

It should be appreciated that when the fresh air temperature is less than the second preset target temperature, the fresh air temperature is reduced. When the fresh air temperature is higher than the third preset target temperature, the first heat exchange system with good cooling and reheating effects can be selected to work independently, so that resource waste is avoided.

In specific implementation, when the first operation mode is a refrigeration mode and the second heat exchange system is in a stop mode, the controller regulates the first heat exchange system, the first throttling element does not work, the second throttling element throttles and reduces pressure to enable the first heat exchanger to be a condenser for heating fresh air, the second heat exchanger is an evaporator for cooling and dehumidifying the fresh air, and the second compressor of the second heat exchange system is controlled to stop running, so that cooling and reheating of the fresh air are realized.

Step S203: and when the fresh air temperature is greater than or equal to a fourth preset target temperature and less than the third preset target temperature, judging that the first operation mode is a stop mode, and judging that the second operation mode is a dehumidification reheating mode.

The fourth preset target temperature is a temperature for determining whether the fresh air temperature is within a target temperature range from the fourth preset target temperature to the third preset target temperature. The fourth preset target temperature is less than the third preset target temperature.

It should be understood that when the fresh air temperature is greater than or equal to the fourth preset target temperature, the fresh air temperature is similar to the target temperature for setting, and the requirement can be met by using the second heat exchange system unit with relatively weaker cooling and reheating to operate.

In a specific implementation, when the first heat exchange system is in a stop mode and the second operation mode is in a refrigeration operation mode, the controller determines that the third heat exchanger is a condenser for reheating fresh air and the fourth heat exchanger is an evaporator for cooling dehumidifying fresh air. In particular, the first compressor of the first heat exchange system may be controlled to shut down to deactivate the first heat exchange system. And (3) regulating a third throttling element in the second heat exchange system to stop working, throttling and reducing pressure by a fourth throttling element, so that the third heat exchanger is a condenser for reheating fresh air, and the fourth heat exchanger is an evaporator for cooling and dehumidifying fresh air. For example, when the fresh air temperature is 18 ℃, the humidity is 13g/kg, the user sets a refrigeration mode, the user sets 20 ℃ and the humidity is 10g/kg, the second heat exchange system level system enters a dehumidification reheating mode, at this time, the third heat exchanger is a condenser for reheating the fresh air, and the fourth heat exchanger is an evaporator for cooling the dehumidification fresh air.

Step S204: and when the fresh air temperature is smaller than a fourth preset target temperature, judging that the first heat exchange system is in a dehumidification reheating mode, and judging that the second heat exchange system is in a heating mode.

When the fresh air temperature is smaller than the fourth preset temperature, the fresh air temperature is lower at this time, and the fresh air needs to be warmed and then is input into a room. At this time, the first heat exchange system can be set to a dehumidifying and reheating mode, and the second heat exchange system is set to a heating mode to heat fresh air.

In a specific implementation, when the first operation mode is a dehumidification reheating mode and the second operation mode is a heating operation mode, the controller determines that the first heat exchanger is a condenser for preheating fresh air, the second heat exchanger is an evaporator for cooling the dehumidification fresh air, and the third heat exchanger and the fourth heat exchanger in the second heat exchange system are both condensers for heating the fresh air. During specific adjustment, the controller can adjust the first throttling element of the first heat exchange system to be inoperative, and the second throttling element throttles and reduces pressure, at the moment, the first heat exchanger is used for preheating fresh air for the condenser, and the second heat exchanger is used for cooling dehumidifying fresh air for the evaporator; and regulating the throttling and depressurization of a third throttling element in the second heat exchange system, wherein the fourth throttling element does not work, and the third heat exchanger and the fourth heat exchanger in the second heat exchange system are condensers for heating fresh air.

In the third embodiment, the target temperature interval where the fresh air temperature is determined by comparing the fresh air temperature with the second preset target temperature, the third preset target temperature and the fourth preset target temperature, so as to determine the first operation mode and the second operation mode corresponding to the first heat exchange system and the second heat exchange system, then the first heat exchange system and the second heat exchange system are adjusted to the corresponding first operation mode and the second operation mode through the corresponding first four-way valve and the second four-way valve, finally the operation states of the heat exchangers in the corresponding systems are adjusted according to the first operation mode and the second operation mode, and therefore the adjusting capability of the air outlet temperature of the fresh air equipment is improved.

Referring to fig. 6, fig. 6 is a schematic flow chart of a fourth embodiment of a fresh air device control method according to the present invention. A fourth embodiment of the fresh air equipment control method of the present invention is provided based on the above third embodiment.

In this embodiment, the step S30 includes:

step S401: and when the first operation mode is a dehumidification reheating mode, acquiring the temperature of the first coil of the second heat exchanger.

It should be noted that, according to the above description, the second heat exchanger and the fourth heat exchanger are both evaporators. In the cooling and dehumidifying process, the temperature of the refrigerant is required to be acquired to determine that the temperature of the refrigerant in the coil can meet the cooling and dehumidifying requirements.

In a specific implementation, the controller may obtain the coil temperature through a temperature sensor disposed at the second heat exchanger-fourth heat exchanger coil, but the controller may also obtain the coil temperature through other manners, which is not limited herein.

Step S402: and when the first coil temperature is higher than a first preset coil temperature, adjusting the rotating speed of the first compressor or the opening degree of the second throttling element so that the first coil temperature is lower than or equal to the first preset coil temperature.

Step S403: when the second operation mode is a dehumidification reheating mode, acquiring the temperature of a second coil of the fourth heat exchanger;

step S404: and when the second coil temperature is higher than a second preset coil temperature, adjusting the rotating speed of the second compressor or the opening degree of the fourth throttling element so that the second coil temperature is lower than or equal to the second preset coil temperature.

It should be understood that the preset coil temperature is a preset standard temperature for whether the coil temperature satisfies the cooling dehumidification. The preset coil temperature is in the range of 2 to 20 degrees celsius. And the controller compares the coil temperature with a preset coil temperature after acquiring the coil temperature, and a second comparison result is obtained. The preset coil temperature may be two different temperature values, wherein the first preset coil temperature is for comparison with the coil temperature of the second heat exchanger and the second preset coil temperature is for comparison with the coil temperature of the fourth heat exchanger.

The second comparison result comprises two comparison results that the coil temperature is larger than the preset coil temperature and the coil temperature is smaller than or equal to the preset coil temperature. When the coil temperature is equal to the preset coil temperature, the state of the heat exchanger does not need to be adjusted, otherwise, the state of the heat exchanger needs to be adjusted.

The compressor is a device for converting low-pressure gas in the heat exchange system into high-pressure gas. The compressor includes a first compressor and a second compressor. If the compressor is a constant speed compressor, the rotating speed of the compressor can be controlled in a start-stop mode.

In specific implementation, the controller can adjust the rotation speed of the first compressor or the opening of the second throttling element corresponding to the second heat exchanger according to the second comparison result when the first heat exchange system is in an unopened state, so as to realize the adjustment of the temperature of the coil pipe of the second heat exchanger; of course, the controller can also adjust the rotation speed of the second compressor of the fourth heat exchanger or the opening of the fourth throttling element according to the second comparison result when the second heat exchange system is in an unopened state, so as to realize the adjustment of the temperature of the coil pipe of the fourth heat exchanger.

For example, when the coil temperature of the second heat exchanger is greater than the first preset coil temperature, the coil temperature of the second heat exchanger cannot meet the cooling and dehumidifying requirements, and the coil temperature of the second heat exchanger can be cooled by increasing the rotation speed of the first compressor or reducing the opening of the second throttling element; of course, when the coil temperature of the second heat exchanger is too low, the coil temperature of the second heat exchanger may be raised by decreasing the rotation speed of the first compressor or increasing the opening degree of the second throttling element. In different working modes, the coil temperature adjustment modes of the second heat exchanger and the fourth heat exchanger are the same, and no description is given here.

The step S404 further includes:

step S501: and obtaining the air outlet temperature of the fresh air equipment.

It should be noted that the air outlet temperature is the temperature of the indoor air outlet output by the output end of the fresh air channel. The air outlet temperature is the temperature for directly adjusting the indoor environment.

In a specific implementation, the controller can acquire the wind temperature through a temperature sensor arranged at the output end of the fresh air channel. The controller may also acquire a pre-reheat or post-reheat temperature when the fresh air device is on, and use the pre-reheat or post-reheat temperature as the outlet air temperature.

Step S502: and when the air outlet temperature is smaller than the target temperature and the second operation mode is a dehumidifying and reheating mode or a heating mode, adjusting the rotating speed of the second fan, the rotating speed of the second compressor or the opening degree of the throttling element so as to improve the air outlet temperature to be the target temperature.

Step S503: and when the air outlet temperature is smaller than the target temperature and the second operation mode is the stop mode, adjusting the rotation speed of the first fan, the rotation speed of the first compressor or the opening degree of the second throttling element so as to improve the air outlet temperature to be the target temperature.

The preset target temperature is a target temperature in the room preset by the user. The third comparison result is a comparison result between the air outlet temperature and a preset target temperature. The third comparison result comprises a comparison result that the air outlet temperature is lower than or equal to the preset target temperature and a comparison result that the air outlet temperature is higher than the preset target temperature.

It should be appreciated that when the fresh air device is in the dehumidification reheat mode, the controller may compare the outlet air temperature with a preset target temperature to determine whether the outlet air temperature is the same as the preset target temperature. Under the condition that the air outlet temperature needs to be regulated in a mode of regulating the rotating speed of the fan, when the second heat exchange system is in a normal working state, namely the second operation mode is a dehumidification reheating mode or a heating mode, the air outlet temperature can be regulated by regulating the rotating speed of the exhaust fan which is convenient to regulate; however, when the second heat exchange system is in the stop mode, the air outlet temperature can be adjusted only by adjusting the rotating speed of the outdoor fan which is positioned outdoors. Of course, if it can be adjusted in other ways, a more convenient way can be chosen.

It should be noted that, in this embodiment, the outdoor fan, the exhaust fan, and the fresh air fan are included. The first fan is an outdoor fan, the second fan is an exhaust fan, and the third fan is a fresh air fan. In this embodiment, the outdoor fan is disposed on the fifth heat exchanger, and the outdoor fan can adjust the fifth heat exchanger in the first heat exchange system; the exhaust fan and the sixth heat exchanger are arranged in the exhaust channel, and the exhaust fan can adjust the sixth heat exchanger in the second heat exchange system.

In specific implementation, when the first heat exchange system is independently operated, namely the second heat exchange system is closed, and the temperature of the air outlet is lower than or equal to the preset target temperature, the temperature in the input room is too low at the moment, and the temperature of the air outlet can be raised by reducing the rotating speed of the outdoor fan, increasing the rotating speed of the first compressor or reducing the opening of the second throttling element; of course, when the wind temperature is greater than the preset target temperature, the opposite adjustment process is adopted, and will not be described herein. When the rotating speed of the fan is adjusted, the rotating speed of the fan can be adjusted in a mode of starting and stopping.

In addition, under the condition that the second heat exchange system normally operates, when the air outlet temperature is smaller than or equal to a preset target temperature, the rotating speed of the air outlet fan can be reduced, the rotating speed of the second compressor can be increased, or the opening degree of the fourth throttling element can be reduced to heat the air outlet; of course, when the wind temperature is greater than the preset target temperature, the opposite adjustment process is adopted, and will not be described herein.

In the fourth embodiment, through adjusting the running state of the heat exchanger through the parameter adjustment to throttling element, compressor and fan, make first heat transfer system and second heat transfer system all be equipped with the heat exchange weapon of a condensation state in the new trend passageway, new trend equipment can more accurate improvement new trend equipment air-out temperature's regulating capability.

In addition, the embodiment of the invention also provides a storage medium, wherein a fresh air equipment control program is stored on the storage medium, and the fresh air equipment control program realizes the steps of the fresh air equipment control method when being executed by a processor. The technical solutions of all the embodiments can be adopted by the storage medium, so that the storage medium has at least the beneficial effects brought by the technical solutions of the embodiments, and the description is omitted herein.

In addition, referring to fig. 7, fig. 7 is a block diagram illustrating a structure of an embodiment of a fresh air device control apparatus according to the present invention. The embodiment of the invention also provides a fresh air equipment control device.

In this embodiment, the fresh air equipment control device is used for controlling fresh air equipment, and the specific structure of this fresh air equipment can refer to the aforesaid, and fresh air equipment control device includes:

the temperature detection module 100 is used for acquiring the fresh air temperature of the fresh air equipment;

it should be noted that the fresh air temperature refers to the temperature of the fresh air input from the input end of the fresh air channel. Fresh air is input into the fresh air channel from the outdoor environment by a third fan in the fresh air channel. In a specific implementation, the fresh air temperature can be collected through a temperature sensor arranged at the third fan.

The mode determining module 200 is configured to determine, when the fresh air device is in the dehumidifying and reheating mode, a first operation mode of the first heat exchange system and a second operation mode of the second heat exchange system according to the fresh air temperature;

The operation modes of the heat exchange system comprise a refrigerating operation mode and a heating operation mode, and the heat exchange system can be in a closed state when the heat exchange system does not work. The first operation mode and the second operation mode refer to a target working mode of the first heat exchange system and a target working mode of the second heat exchange system respectively when the fresh air equipment is in the dehumidification mode.

In a specific implementation, when the fresh air equipment is in the dehumidification reheating mode, the fresh air temperature can be compared with a set temperature value, and the fresh air temperature threshold is divided into different temperature sections. When the fresh air temperature is in different temperature intervals, the first heat exchange system and the second heat exchange system are in different operation modes. For example, when the fresh air temperature is in a higher temperature interval, the first heat exchange system and the second heat exchange system can be in a refrigeration mode at the same time, and dehumidification and reheating can be realized more quickly. Similarly, when the fresh air temperature is in a lower temperature interval, the first heat exchange system can be in a refrigeration mode for dehumidification, and the second heat exchange system can be in a heating mode, so that the air outlet temperature reaches the target temperature as soon as possible.

The state adjusting module 300 is configured to drive the first heat exchange system according to the first operation mode, and drive the second heat exchange system according to the second operation mode, so as to dehumidify the fresh air.

In a specific implementation, the controller may adjust the operating parameters of the first throttling element, the second throttling element, or the first compressor in the first heat exchange system according to the first operation mode to realize the adjustment of the operating states of the first heat exchanger and the second heat exchanger. The controller may also determine to adjust an operating parameter of the third throttling element, the fourth throttling element, or the second compressor in the second heat exchange system according to the second operating mode, thereby adjusting an operating state of the third heat exchanger and the fourth heat exchanger.

Wherein the throttling element comprises first to fourth throttling elements. The first throttling element is used for adjusting the refrigerants in the fifth heat exchanger and the first heat exchanger, and the second throttling element is used for adjusting the refrigerants in the first heat exchanger and the second heat exchanger till now; the third throttling element is used for controlling the refrigerant between the sixth heat exchanger and the third heat exchanger, and the fourth throttling element is used for adjusting the refrigerant between the third heat exchanger and the fourth heat exchanger.

In a first embodiment, the fresh air system has a first and a second heat exchange system, the first heat exchange system comprising at least one heat exchanger in the fresh air channel, the second heat exchange system comprising at least one heat exchanger in the fresh air channel, and the fresh air channel comprising at least three heat exchangers. The first heat exchange system is used for exchanging heat between the fresh air channel and the outdoor environment, and the second heat exchange system is used for exchanging heat between the fresh air channel and the exhaust channel; the temperature detection module 100 is used for collecting the fresh air temperature of the fresh air equipment, the mode determination module 200 is used for determining a first operation mode and a second operation mode corresponding to the first heat exchange system and the second heat exchange system according to the fresh air temperature, and then the state adjustment module 300 is used for driving the corresponding first heat exchange system and second heat exchange system according to the first operation mode and the second operation mode so as to dehumidify the fresh air, so that the air outlet temperature adjustment capability of the fresh air equipment is improved.

In an embodiment, the mode determining module 200 is further configured to determine that the target operation mode of the fresh air device is a dehumidification reheat mode when the fresh air temperature is less than a first preset target temperature.

In an embodiment, the mode determining module 200 is further configured to determine that at least one of the first operation mode and the second operation mode is a dehumidifying and reheating mode when the fresh air temperature is greater than or equal to a second preset target temperature and less than a first preset target temperature.

In an embodiment, the mode determining module 200 is further configured to determine that the first operation mode is a dehumidification reheat mode and the second operation mode is a stop mode when the fresh air temperature is greater than or equal to a third preset target temperature and less than a second preset target temperature.

In an embodiment, the mode determining module 200 is further configured to determine that the first operation mode is a stop mode and the second operation mode is a dehumidifying and reheating mode when the fresh air temperature is greater than or equal to a fourth preset target temperature and less than a third preset target temperature

In an embodiment, the mode determining module 200 is further configured to determine that the first heat exchange system is in the dehumidification reheat mode and the second heat exchange system is in the heating mode when the fresh air temperature is less than a fourth preset target temperature.

In an embodiment, the state adjusting module 300 is further configured to, when the first operation mode is a refrigeration mode, operate the first throttling element, and not operate the second throttling element, where the first heat exchanger and the second heat exchanger combine to achieve a fresh air cooling effect; when the first operation mode is a dehumidification reheating mode, the first throttling element does not work, the second throttling element works, the second heat exchanger in the first heat exchange system is an evaporator, and the first heat exchanger is a condenser; when the second operation mode is a refrigeration mode, the third throttling element works, the fourth throttling element does not work, and the third heat exchanger and the fourth heat exchanger are combined to achieve a fresh air cooling effect; when the second operation mode is a dehumidification reheating mode, the third throttling element does not work, the fourth throttling element works, the fourth heat exchanger in the second heat exchange system is an evaporator, and the third heat exchanger is a condenser.

In an embodiment, the temperature detection module 100 is further configured to obtain a first coil temperature of the second heat exchanger when the first operation mode is a dehumidification reheat mode; the state adjusting module 300 is further configured to adjust a rotation speed of the first compressor or an opening degree of the second throttling element when the first coil temperature is greater than a first preset coil temperature, so that the first coil temperature is less than or equal to the first preset coil temperature; when the second operation mode is a dehumidification reheating mode, acquiring the temperature of a second coil of the fourth heat exchanger; and when the second coil temperature is greater than a second preset coil temperature, adjusting the rotating speed of the second compressor or the opening degree of the fourth throttling element so that the second coil temperature is less than or equal to the second preset coil temperature.

In an embodiment, the temperature detection module 100 is further configured to obtain an air outlet temperature of the fresh air device; the state adjusting module 300 is further configured to adjust a second fan rotation speed, a second compressor rotation speed, or an opening degree of a throttling element when the air outlet temperature is less than a target temperature and the second operation mode is a dehumidification reheat mode or a heating mode, so as to increase the air outlet temperature to the target temperature; and when the air outlet temperature is smaller than the target temperature and the second operation mode is the stop mode, adjusting the rotation speed of the first fan, the rotation speed of the first compressor or the opening degree of the second throttling element so as to improve the air outlet temperature to be the target temperature.

Other embodiments or specific implementation manners of the fresh air equipment control device of the present invention may refer to the above method embodiments, so at least the technical solutions of the foregoing embodiments have all the beneficial effects, and are not repeated herein.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.

The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the terms first, second, third, etc. do not denote any order, but rather the terms first, second, third, etc. are used to interpret the terms as names.

From the above description of embodiments, it will be clear to a person skilled in the art that the above embodiment method may be implemented by means of software plus a necessary general hardware platform, but may of course also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. read only memory mirror (Read Only Memory image, ROM)/random access memory (Random Access Memory, RAM), magnetic disk, optical disk), comprising instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method according to the embodiments of the present invention.

The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.

Claims

1. The fresh air equipment control method is characterized by comprising a first heat exchange system and a second heat exchange system, wherein the first heat exchange system is used for exchanging heat between a fresh air channel and an outdoor environment, and the second heat exchange system is used for exchanging heat between the fresh air channel and an exhaust channel;

the fresh air equipment control method comprises the following steps:

acquiring a fresh air temperature of fresh air equipment;

the first heat exchange system comprises a first compressor, a first four-way valve, a fifth heat exchanger, a first throttling element, a first heat exchanger, a second throttling element and a second heat exchanger which are sequentially connected; the second heat exchange system comprises a second compressor, a second four-way valve, a sixth heat exchanger, a third throttling element, a third heat exchanger, a fourth throttling element and a fourth heat exchanger which are sequentially connected;

The fresh air equipment comprises a fresh air channel and an exhaust channel, wherein the first heat exchanger, the second heat exchanger, the third heat exchanger and the fourth heat exchanger are positioned in the fresh air channel, the second heat exchanger is positioned at the upstream of the first heat exchanger, the fourth heat exchanger is positioned at the upstream of the third heat exchanger, the sixth heat exchanger is positioned in the exhaust channel, and the fifth heat exchanger is an outdoor heat exchanger;

2. The fresh air equipment control method of claim 1, wherein determining a first mode of operation of the first heat exchange system and a second mode of operation of the second heat exchange system based on the fresh air temperature comprises:

3. The fresh air equipment control method according to claim 2, wherein at least one heat exchanger of the first heat exchange system is disposed in a fresh air passage, at least one heat exchanger of the second heat exchange system is disposed in a fresh air passage, at least three heat exchangers are disposed in the fresh air passage, and the determining the first operation mode of the first heat exchange system and the second operation mode of the second heat exchange system according to the fresh air temperature includes:

4. The fresh air equipment control method according to claim 3, wherein at least two heat exchangers of the first heat exchange system are disposed in a fresh air channel, the determining the first operation mode of the first heat exchange system and the second operation mode of the second heat exchange system according to the fresh air temperature further comprises:

5. The fresh air equipment control method of claim 4, wherein at least two heat exchangers of the first heat exchange system are disposed in a fresh air channel, the determining the first mode of operation of the first heat exchange system and the second mode of operation of the second heat exchange system based on the fresh air temperature further comprising:

6. The fresh air equipment control method of claim 5, wherein the determining the first mode of operation of the first heat exchange system and the second mode of operation of the second heat exchange system based on the fresh air temperature further comprises:

7. The fresh air equipment control method according to any one of claims 1 to 6, wherein an area of the first heat exchanger is 50% or less of an area of the fifth heat exchanger; the area of the third heat exchanger is less than or equal to 150% of the area of the sixth heat exchanger.

8. The method for controlling fresh air equipment according to claim 7, wherein after driving the first heat exchange system according to the first operation mode and driving the second heat exchange system according to the second operation mode to dehumidify the fresh air, the method comprises:

when the first operation mode is a dehumidification reheating mode, acquiring the temperature of a first coil of the second heat exchanger; the method comprises the steps of,

9. The fresh air equipment control method according to claim 8, wherein after adjusting the rotation speed of the second compressor or the opening degree of the fourth throttling element so that the second coil temperature is the second preset coil temperature, comprising:

acquiring the air outlet temperature of the fresh air equipment;

10. Fresh air equipment controlling means, its characterized in that, fresh air equipment controlling means includes:

11. Fresh air equipment, its characterized in that, fresh air equipment includes: the fresh air equipment control method according to any one of claims 1-9 is realized when the fresh air equipment control program is executed by the processor.

12. A storage medium, wherein a fresh air device control program is stored on the storage medium, and when executed by a processor, the fresh air device control program implements the fresh air device control method according to any one of claims 1 to 9.