CN110657505A - Dehumidifier system, dehumidifier and control method - Google Patents
Dehumidifier system, dehumidifier and control method Download PDFInfo
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- CN110657505A CN110657505A CN201910902310.5A CN201910902310A CN110657505A CN 110657505 A CN110657505 A CN 110657505A CN 201910902310 A CN201910902310 A CN 201910902310A CN 110657505 A CN110657505 A CN 110657505A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/02742—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using two four-way valves
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- General Engineering & Computer Science (AREA)
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- Combustion & Propulsion (AREA)
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- Thermal Sciences (AREA)
- Signal Processing (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
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Abstract
The invention discloses a dehumidifier system, which comprises a compressor, a heat exchange device, a throttling device and a valve device with a plurality of four-way reversing valves, wherein the heat exchange device is arranged on the compressor; the compressor, the valve device, the heat exchange device and the throttling device are connected through pipelines to form a refrigerant circulation loop; wherein, the input of valve device is connected with the output of compressor, the output of valve device is connected to the input of compressor through heat exchange device and/or throttling arrangement. The embodiment of the invention reduces electric control elements in the system, greatly simplifies electric control wiring work, reduces the complexity of electric control logic and improves the reliability of system control. The invention also provides a control method of the dehumidifier system and the dehumidifier.
Description
Technical Field
The invention relates to the technical field of dehumidifiers, in particular to a dehumidifier system, a dehumidifier and a control method.
Background
Usually, the dehumidifier needs to meet three basic functions of a winter heating dehumidification mode, a summer refrigeration dehumidification mode and a swimming pool constant temperature dehumidification mode, and a complex design needs to be carried out on the system, but the existing system mainly utilizes a plurality of electromagnetic two-way valves to realize the switching among the three modes through different on-off control, so that the pipeline design and the control logic are complex, and the system control reliability is low.
Disclosure of Invention
The invention provides a dehumidifier system, a dehumidifier and a control method, which are used for solving the technical problems of multiple parts, complex control and complex pipeline design caused by the fact that the existing dehumidifier utilizes a plurality of electromagnetic two-way valves to realize dehumidification mode control.
In order to solve the technical problem, an embodiment of the present invention provides a dehumidifier system, including a compressor, a heat exchange device, a throttling device, and a valve device having a plurality of four-way reversing valves;
the compressor, the valve device, the heat exchange device and the throttling device are connected through pipelines to form a refrigerant circulation loop; wherein, the input of valve device is connected with the output of compressor, the output of valve device is connected to the input of compressor through heat exchange device and/or throttling arrangement.
Preferably, an input end of one of the four-way reversing valves is connected with an output end of the compressor, and input ends of the other four-way reversing valves are respectively connected with an output end of the four-way reversing valve.
As a preferred scheme, the valve device comprises a first four-way reversing valve and a second four-way reversing valve, the heat exchange device comprises a first heat exchanger, a second heat exchanger, a third heat exchanger and a fourth heat exchanger, and the throttling device comprises a first throttling assembly and a second throttling assembly;
the output end of the compressor is connected with the first valve port of the first four-way reversing valve, the second valve port of the first four-way reversing valve is connected to the first end of the first throttling assembly through the first heat exchanger, and the third valve port of the first four-way reversing valve is connected to the input end of the compressor through the second throttling assembly;
the fourth port of the first four-way reversing valve is connected with the first port of the second four-way reversing valve, the second port of the second four-way reversing valve is connected with the first end of the first throttling component through the second heat exchanger, the third port of the second four-way reversing valve is connected with the first end of the second throttling component, the fourth port of the second four-way reversing valve is connected with the first end of the first throttling component through the third heat exchanger,
the second end of the first throttling assembly is connected to the input end of the compressor through the fourth heat exchanger, and the second end of the second throttling assembly is connected with the input end of the compressor.
Preferably, the first heat exchanger is a tubular heat exchanger, the second heat exchanger is an indoor heat exchanger, the third heat exchanger is an outdoor heat exchanger, and the fourth heat exchanger is an evaporative heat exchanger.
As a preferred scheme, the compressor, the first four-way reversing valve, the second four-way reversing valve, the first heat exchanger, the second heat exchanger, the third heat exchanger, the fourth heat exchanger, the first throttling component and the second throttling component are all electrically connected with and controlled by a dehumidifier controller.
The embodiment of the invention also provides a control method for the dehumidifier system, which is executed by the dehumidifier controller and comprises the following steps:
when the constant-temperature dehumidification mode is operated, the first valve port and the second valve port of the first four-way reversing valve are controlled to be communicated, so that a refrigerant circularly flows along the compressor, the output end of the compressor, the first four-way reversing valve, the first heat exchanger, the first throttling assembly, the fourth heat exchanger and the input end of the compressor.
Preferably, the method further comprises:
after the constant-temperature dehumidification mode is finished, operating a first refrigerant recovery mode;
when the first refrigerant recovery mode is in operation, the second valve port and the third valve port of the second four-way reversing valve are controlled to be communicated, the fourth valve port and the first valve port of the second four-way reversing valve are controlled to be communicated, the fourth valve port and the third valve port of the first four-way reversing valve are controlled to be communicated, so that the refrigerant of the second heat exchanger flows back to the compressor along the second four-way reversing valve, the second throttling assembly and the input end of the compressor, and the refrigerant of the third heat exchanger flows back to the compressor along the second four-way reversing valve, the first four-way reversing valve, the second throttling assembly and the input end of the compressor.
The embodiment of the invention also provides a control method for the dehumidifier system, which is executed by the dehumidifier controller and comprises the following steps:
when the refrigeration and dehumidification mode in summer is operated, the first valve port and the fourth valve port of the first four-way reversing valve are controlled to be communicated, and the first valve port and the fourth valve port of the second four-way reversing valve are controlled to be communicated, so that a refrigerant circularly flows along the output end of the compressor, the first four-way reversing valve, the second four-way reversing valve, the third heat exchanger, the first throttling assembly, the fourth heat exchanger and the input end of the compressor.
Preferably, the method further comprises:
after the summer refrigeration dehumidification mode is finished, operating a second refrigerant recovery mode;
when the second refrigerant recovery mode is in operation, the second valve port and the third valve port of the second four-way reversing valve are controlled to be communicated, the second valve port and the third valve port of the first four-way reversing valve are controlled to be communicated, so that the refrigerant of the second heat exchanger flows back to the compressor along the second four-way reversing valve, the second throttling assembly and the input end of the compressor, and the refrigerant of the first heat exchanger flows back to the compressor along the first four-way reversing valve, the second throttling assembly and the input end of the compressor.
The embodiment of the invention also provides a control method for the dehumidifier system, which is executed by the dehumidifier controller and comprises the following steps:
when the winter heating and dehumidifying mode is operated, the first valve port and the fourth valve port of the first four-way reversing valve are controlled to be communicated, and the first valve port and the second valve port of the second four-way reversing valve are controlled to be communicated, so that a refrigerant circularly flows along the output end of the compressor, the first four-way reversing valve, the second heat exchanger, the first throttling assembly, the fourth heat exchanger and the input end of the compressor.
Preferably, the method further comprises:
after the winter heating dehumidification mode is finished, operating a third refrigerant recovery mode;
when the third refrigerant recovery mode is in operation, the fourth valve port and the third valve port of the second four-way reversing valve are controlled to be communicated, the second valve port and the third valve port of the first four-way reversing valve are controlled to be communicated, so that the refrigerant of the third heat exchanger flows back to the compressor along the second four-way reversing valve, the second throttling assembly and the input end of the compressor, and the refrigerant of the first heat exchanger flows back to the compressor along the first four-way reversing valve, the second throttling assembly and the input end of the compressor.
The embodiment of the invention also provides a dehumidifier which comprises a shell and the dehumidifier system, wherein the dehumidifier system adopts the control method.
Compared with the prior art, the embodiment of the invention has the following beneficial effects:
1. the refrigerant discharged from the compressor is uniformly concentrated in the valve device, and different flow directions and paths of the refrigerant are realized by selecting and opening and closing the valves of the valve device, so that the refrigerant flows to the heat exchange device.
2. Compared with the prior art that the system adopts a plurality of electromagnetic two-way valves, the invention utilizes the reversing function of the four-way valve, reduces the complexity of electric control logic, realizes flexible switching of various paths, has simpler and more reliable control logic, and can adapt to a plurality of heat exchangers when the valve device is composed of a plurality of four-way valves, thereby having higher universality and flexibility.
3. The system is formed by sequentially connecting the compressor, the valve device, the heat exchange device and the throttling device through pipelines to form a refrigerant circulation loop, is simple in layout, does not need to be dispersedly installed in a plurality of pipelines by using a plurality of electromagnetic two-way valves to realize control of the refrigerant pipelines, obviously reduces the number of designed pipelines of the unit process elbow, greatly reduces the design and process workload, and simultaneously reduces the pipeline cost.
4. When the heating dehumidification mode in winter, the refrigeration dehumidification mode in summer, the operation of the different modes of constant temperature dehumidification mode, this embodiment can retrieve the refrigerant in other heat exchangers in the system in time for the normal operating of system has guaranteed the refrigerant volume when system operation, thereby effectively improves the ability and the efficiency of unit.
5. The default four-way reversing valve of the dehumidifier system is in a winter heating and dehumidifying mode when power is not supplied, so that the instant high-pressure risk of unit operation caused by abnormity caused by system blockage is avoided, and the reliability and the safety are effectively improved.
Drawings
FIG. 1 is a schematic structural diagram of a dehumidifier system in an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating a refrigerant flow direction of the main path and the refrigerant recovery flow path of the dehumidifier system in the constant temperature dehumidification mode according to the embodiment of the present invention;
fig. 3 is a schematic diagram illustrating the refrigerant flowing directions of the main path and the refrigerant recycling flow path in the cooling and dehumidifying mode in summer of the dehumidifier system according to the embodiment of the present invention;
fig. 4 is a schematic diagram illustrating the refrigerant flowing directions of the main circuit and the refrigerant recycling flow path of the dehumidifier system in the winter heating and dehumidifying mode according to the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a dehumidifier system according to a preferred embodiment of the present invention includes a compressor Y, a heat exchanger, a throttling device, and a valve device having a plurality of four-way reversing valves;
the compressor Y, the valve device, the heat exchange device and the throttling device are connected through pipelines to form a refrigerant circulation loop; wherein, the input of valve device is connected with the output of compressor, the output of valve device is connected to the input of compressor through heat exchange device and/or throttling arrangement.
In this embodiment, the refrigerant discharged from the compressor is collected into the valve device, and the refrigerant flows to the heat exchanger by selecting and opening/closing the valve of the valve device to realize different flow directions and paths of the refrigerant. Compared with the prior art that the system adopts a plurality of electromagnetic two-way valves, the invention utilizes the reversing function of the four-way valve, reduces the complexity of electric control logic, realizes flexible switching of various paths, has simpler and more reliable control logic, and can adapt to a plurality of heat exchangers when the valve device is composed of a plurality of four-way valves, thereby having higher universality and flexibility. The system is formed by sequentially connecting the compressor Y, the valve device, the heat exchange device and the throttling device through pipelines to form a refrigerant circulation loop, is simple in layout, does not need to be dispersedly installed in a plurality of pipelines by using a plurality of electromagnetic two-way valves to realize control of refrigerant pipelines, obviously reduces the number of designed pipelines of unit process bent pipes, greatly reduces the design and process workload, and simultaneously reduces the pipeline cost.
It should be noted that 1 compressor Y is configured in an independent system, the input end of one of the four-way reversing valves is connected to the output end of the compressor, and the input ends of the other four-way reversing valves are respectively connected to the output end of the one of the four-way reversing valves. In the double system or the multiple systems, 2 compressors or a plurality of compressors are configured, and in the plurality of four-way reversing valves, the input ends of 2 or a plurality of four-way reversing valves are connected with the output ends of the corresponding compressors.
Referring to fig. 1-4, in one preferred embodiment, the valve arrangement includes a first four-way reversing valve F1, a second four-way reversing valve F2; the heat exchange device comprises a first heat exchanger A1, a second heat exchanger A2, a third heat exchanger A3 and a fourth heat exchanger A4, and the throttling device comprises a first throttling assembly T1 and a second throttling assembly T2;
the output end of the compressor Y is connected with the first port D1 of the first four-way reversing valve F1, the second port E1 of the first four-way reversing valve F1 is connected to the first end of the first throttling assembly T1 through the first heat exchanger a1, and the third port S1 of the first four-way reversing valve F1 is connected to the input end of the compressor Y through the second throttling assembly T2;
the fourth port C1 of the first four-way selector valve F1 is connected to the first port D2 of the second four-way selector valve F2, the second port E2 of the second four-way selector valve F2 is connected to the first end of the first throttle assembly T1 via a second heat exchanger A2, the third port S2 of the second four-way selector valve F2 is connected to the first end of the second throttle assembly T2, the fourth port C2 of the second four-way selector valve F2 is connected to the first end of the first throttle assembly T1 via a third heat exchanger A3,
a second end of the first throttling assembly T1 is connected to the input of the compressor Y through a fourth heat exchanger a4, and a second end of the second throttling assembly T2 is connected to the input of the compressor Y.
In this embodiment, it should be noted that the first heat exchanger a1 is a tubular heat exchanger, the second heat exchanger a2 is an indoor heat exchanger, the third heat exchanger A3 is an outdoor heat exchanger, the fourth heat exchanger a4 is an evaporating heat exchanger, and the first throttling assembly T1 and the second throttling assembly T2 are electronic valves or brass distributor assemblies, so as to achieve a liquid-dividing throttling function, so that in various different modes, the refrigerant in each of the other heat exchangers that do not work is recovered at the same time, and is throttled by the brass distributor and then changed into a gaseous refrigerant, which is returned to the compressor Y, so as to be used for normal operation of the system, thereby ensuring the amount of refrigerant during operation of the system.
In addition, it can be understood that the compressor Y, the first four-way reversing valve F1, the second four-way reversing valve F2, the first heat exchanger a1, the second heat exchanger a2, the third heat exchanger A3, the fourth heat exchanger a4, the first throttling assembly T1 and the second throttling assembly T2 are all electrically connected with and controlled by a dehumidifier controller.
Referring to fig. 2 to 4, it can be understood that, in order to rationalize the structure, a first check valve is installed on a connection pipe between the second throttling assembly T2 and the valve device, a second check valve is installed on a connection pipe between the second heat exchanger a2 and the first throttling assembly T1, a third check valve is installed on a connection pipe between the third heat exchanger A3 and the first throttling assembly T1, and a fourth check valve is installed on a connection pipe between the first heat exchanger and the first throttling assembly T1, so as to prevent a refrigerant from flowing backwards.
In the embodiment, two groups of bipolar four-way valves (the first four-way reversing valve F1 and the second four-way reversing valve F2) are adopted to form the main path assembly, so that switching among a winter heating dehumidification mode, a summer refrigeration dehumidification mode and a constant temperature dehumidification mode can be operated, 6 groups of electromagnetic two-way valves are directly replaced, electric control elements of a system are reduced, the work of electric control wiring is greatly simplified, the electric control layout is simplified, the complexity of electric control logic is reduced, and the control logic is simpler and more reliable.
The following are the actions of the valves and the flowing direction of the system coolant and the flowing direction of the coolant recovery when the dehumidifier system runs in various modes:
description of the drawings:
the interface of the first four-way reversing valve F1 is provided with: a first port D1, a second port E1, a third port S1 and a fourth port C1;
the interface of the second four-way reversing valve F2 is provided with: a first port D2, a second port E2, a third port S2, and a fourth port C2.
As shown in fig. 2, in a preferred embodiment, the control method for the dehumidifier system, executed by the dehumidifier controller, includes the following steps:
when the thermostatic dehumidification mode is operated, the first valve port D1 and the second valve port of the first four-way reversing valve F1 are controlled to be communicated, so that a refrigerant circularly flows along the compressor Y, the output end of the compressor Y, the first four-way reversing valve F1, the first heat exchanger a1, the first throttling assembly T1, the fourth heat exchanger a4 and the input end of the compressor Y.
In the present embodiment, when the thermostatic dehumidification mode is operated, the first four-way reversing valve F1 is powered on, and the second four-way reversing valve F2 is powered off; d1 communicating with E1, S1 communicating with C1; c1 communicating with D2, D2 communicating with C2, E2 communicating with S2;
main path flow direction: refrigerant flows from the compressor Y to the D1 inlet of the first four-way reversing valve F1; from D1-E1-the first heat exchanger a1 (tubular heat exchanger) -the first throttling assembly T1-the fourth heat exchanger a4 (evaporative heat exchanger) -back to the compressor Y.
For the refrigerant recovery direction in this mode:
the second heat exchanger A2 (indoor condensing fins) -E2-S2-the second throttling assembly T2-returns to the compressor Y;
the third heat exchanger A3 (outdoor condensing fin) -C2-D2-C1-S1-the second throttling assembly T2-is returned to the compressor Y;
the method specifically comprises the following steps: after the constant-temperature dehumidification mode is finished, operating a first refrigerant recovery mode;
when the first refrigerant recovery mode is in operation, the second port E2 and the third port of the second four-way selector valve F2, the fourth port C2 and the first port of the second four-way selector valve F2, and the fourth port C1 and the third port of the first four-way selector valve F1 are controlled to communicate with each other, so that the refrigerant of the second heat exchanger a2 flows back to the compressor Y along the second four-way selector valve F2, the second throttling assembly T2, and the input end of the compressor Y, and the refrigerant of the third heat exchanger a3 flows back to the compressor Y along the second four-way selector valve F2, the first four-way selector valve F1, the second throttling assembly T2, and the input end of the compressor Y.
As shown in fig. 3, in a preferred embodiment, the control method for the dehumidifier system, executed by the dehumidifier controller, includes the following steps:
when the refrigeration and dehumidification mode in summer is operated, the first valve port D1 and the fourth valve port of the first four-way reversing valve F1 are controlled to be communicated, and the first valve port D2 and the fourth valve port of the second four-way reversing valve F2 are controlled to be communicated, so that a refrigerant circularly flows along the output end of the compressor Y, the first four-way reversing valve F1, the second four-way reversing valve F2, the third heat exchanger A3, the first throttling assembly T1, the fourth heat exchanger A4 and the input end of the compressor Y.
In the present embodiment, when the summer cooling and dehumidifying mode is operated, the first four-way reversing valve F1 is de-energized, and the second four-way reversing valve F2 is de-energized; d1 is communicated with C1, C1 is communicated with D2 and C2; e1 and S1 are communicated, E2 and S2 are communicated;
main path flow direction: the refrigerant flows from the compressor Y to the first four-way reversing valve F1-D1-C1-the second four-way reversing valve F2-D2-C2-the third heat exchanger A3 (outdoor condensing fin) -the first throttling assembly T1-the fourth heat exchanger a4 (evaporating heat exchanger) -returns to the compressor Y;
for the refrigerant recovery direction in this mode:
the second heat exchanger A2 (indoor condensing fins) -E2-S2-the second throttling assembly T2-returns to the compressor Y
The first heat exchanger A1 (tubular heat exchanger) -E1-S1-the second throttling assembly T2-is returned to the compressor Y;
the method specifically comprises the following steps: after the summer refrigeration dehumidification mode is finished, operating a second refrigerant recovery mode;
when the second refrigerant recovery mode is in operation, the second port E2 and the third port of the second four-way selector valve F2 are controlled to communicate with each other, and the second port E1 and the third port of the first four-way selector valve F1 are controlled to communicate with each other, so that the refrigerant of the second heat exchanger a2 flows back to the compressor Y along the second four-way selector valve F2, the second throttling set T2 and the input end of the compressor Y, and the refrigerant of the first heat exchanger a1 flows back to the compressor Y along the first four-way selector valve F1, the second throttling set T2 and the input end of the compressor Y.
As shown in fig. 4, in a preferred embodiment, the control method for the dehumidifier system, executed by the dehumidifier controller, includes the following steps:
when the winter heating and dehumidifying mode is operated, the first valve port D1 and the fourth valve port of the first four-way reversing valve F1 are controlled to be communicated, and the first valve port D2 and the second valve port of the second four-way reversing valve F2 are controlled to be communicated, so that a refrigerant circularly flows along the output end of the compressor Y, the first four-way reversing valve F1, the second four-way reversing valve F2, the second heat exchanger A2, the first throttling assembly T1, the fourth heat exchanger A4 and the input end of the compressor Y.
In the present embodiment, when the winter heating and dehumidifying mode is operated, the first four-way selector valve F1 is de-energized and the second four-way selector valve F2 is energized; d1 communicating with C1, D2 communicating with E2; s2 and C2 are communicated
Main path flow direction: the refrigerant flows from the compressor Y to the first four-way reversing valve F1-D1-C1-the second four-way reversing valve F2-D2-E2-the second heat exchanger a2 (indoor condensing fin) -the first throttling assembly T1-the fourth heat exchanger a4 (evaporating heat exchanger) -returns to the compressor Y.
For the refrigerant recovery direction in this mode:
the third heat exchanger A3 (outdoor condensing fin) -C2-S2-the second throttling assembly T2-returns to the compressor Y;
the first heat exchanger A1 (tubular heat exchanger) -E1-S1-the second throttling assembly T2-is returned to the compressor Y;
the method specifically comprises the following steps: the method further comprises the following steps:
after the winter heating dehumidification mode is finished, operating a third refrigerant recovery mode;
when the third refrigerant recovery mode is in operation, the fourth port C2 and the third port of the second four-way selector valve F2 are controlled to communicate with each other, and the second port E1 and the third port of the first four-way selector valve F1 are controlled to communicate with each other, so that the refrigerant of the third heat exchanger A3 flows back to the compressor Y along the second four-way selector valve F2, the second throttling set T2 and the input end of the compressor Y, and the refrigerant of the first heat exchanger a1 flows back to the compressor Y along the first four-way selector valve F1, the second throttling set T2 and the input end of the compressor Y.
The embodiment of the invention also provides a dehumidifier which comprises a shell and the dehumidifier system, wherein the dehumidifier system adopts the control method.
In summary, embodiments of the present invention provide a dehumidifier system, a dehumidifier, and a control method, and compared with the prior art, embodiments of the present invention have the following beneficial effects:
1. in the embodiment, the first four-way reversing valve F1 and the second four-way reversing valve F2 form a bipolar control assembly, so that the functions of a winter heating dehumidification mode, a summer refrigeration dehumidification mode and a constant temperature dehumidification mode can be operated, compared with the prior art that 6 electromagnetic two-way valves are adopted, the four-way reversing valve has the advantages that system electric control elements are reduced, the work of electric control wiring is greatly simplified, the electric control layout is simplified, the complexity of electric control logic is reduced, and the control logic is simpler and more reliable;
2. the pipeline design of the dehumidifier system is simplified, the design pipeline of the unit process bent pipe is obviously reduced, the design and process workload is greatly reduced, and the pipeline cost is also reduced;
3. when the heating dehumidification mode in winter, the refrigeration dehumidification mode in summer and the constant-temperature dehumidification mode operate in different modes, the embodiment can timely recover the refrigerants in other heat exchangers in the system for normal operation of the system, so that the refrigerant quantity during operation of the system is ensured, and the capacity and the energy efficiency of a unit are effectively improved;
4. the default four-way reversing valve of the dehumidifier system is in a winter heating and dehumidifying mode when power is not supplied, so that the instant high-pressure risk of unit operation caused by abnormity caused by system blockage is avoided, and the reliability and the safety are effectively improved.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (10)
1. A dehumidifier system is characterized by comprising a compressor, a heat exchange device, a throttling device and a valve device with a plurality of four-way reversing valves;
the compressor, the valve device, the heat exchange device and the throttling device are connected through pipelines to form a refrigerant circulation loop; wherein, the input of valve device is connected with the output of compressor, the output of valve device is connected to the input of compressor through heat exchange device and/or throttling arrangement.
2. The dehumidifier system of claim 1, wherein an input of one of the four-way reversing valves is connected to an output of the compressor, and inputs of the remaining four-way reversing valves are connected to an output of the one of the four-way reversing valves, respectively.
3. The dehumidifier system of claim 1 or 2, wherein the valve means comprises a first four-way reversing valve, a second four-way reversing valve, the heat exchange means comprises a first heat exchanger, a second heat exchanger, a third heat exchanger, a fourth heat exchanger, and the throttling means comprises a first throttling assembly, a second throttling assembly;
the output end of the compressor is connected with the first valve port of the first four-way reversing valve, the second valve port of the first four-way reversing valve is connected to the first end of the first throttling assembly through the first heat exchanger, and the third valve port of the first four-way reversing valve is connected to the input end of the compressor through the second throttling assembly;
the fourth port of the first four-way reversing valve is connected with the first port of the second four-way reversing valve, the second port of the second four-way reversing valve is connected with the first end of the first throttling component through the second heat exchanger, the third port of the second four-way reversing valve is connected with the first end of the second throttling component, the fourth port of the second four-way reversing valve is connected with the first end of the first throttling component through the third heat exchanger,
the second end of the first throttling assembly is connected to the input end of the compressor through the fourth heat exchanger, and the second end of the second throttling assembly is connected with the input end of the compressor.
4. A control method for a dehumidifier system according to claim 3, performed by the dehumidifier controller, comprising the steps of:
when the constant-temperature dehumidification mode is operated, the first valve port and the second valve port of the first four-way reversing valve are controlled to be communicated, so that a refrigerant circularly flows along the compressor, the output end of the compressor, the first four-way reversing valve, the first heat exchanger, the first throttling assembly, the fourth heat exchanger and the input end of the compressor.
5. The method of controlling a dehumidifier system according to claim 4, wherein the method further comprises:
when the constant-temperature dehumidification mode is operated, a first refrigerant recovery mode is operated;
when the first refrigerant recovery mode is in operation, the second valve port and the third valve port of the second four-way reversing valve are controlled to be communicated, the fourth valve port and the first valve port of the second four-way reversing valve are controlled to be communicated, the fourth valve port and the third valve port of the first four-way reversing valve are controlled to be communicated, so that the refrigerant of the second heat exchanger flows back to the compressor along the second four-way reversing valve, the second throttling assembly and the input end of the compressor, and the refrigerant of the third heat exchanger flows back to the compressor along the second four-way reversing valve, the first four-way reversing valve, the second throttling assembly and the input end of the compressor.
6. A control method for a dehumidifier system according to claim 3, performed by the dehumidifier controller, comprising the steps of:
when the refrigeration and dehumidification mode in summer is operated, the first valve port and the fourth valve port of the first four-way reversing valve are controlled to be communicated, and the first valve port and the fourth valve port of the second four-way reversing valve are controlled to be communicated, so that a refrigerant circularly flows along the output end of the compressor, the first four-way reversing valve, the second four-way reversing valve, the third heat exchanger, the first throttling assembly, the fourth heat exchanger and the input end of the compressor.
7. The method of controlling a dehumidifier system of claim 6, wherein the method further comprises:
when the summer refrigeration dehumidification mode is operated, operating a second refrigerant recovery mode;
when the second refrigerant recovery mode is in operation, the second valve port and the third valve port of the second four-way reversing valve are controlled to be communicated, the second valve port and the third valve port of the first four-way reversing valve are controlled to be communicated, so that the refrigerant of the second heat exchanger flows back to the compressor along the second four-way reversing valve, the second throttling assembly and the input end of the compressor, and the refrigerant of the first heat exchanger flows back to the compressor along the first four-way reversing valve, the second throttling assembly and the input end of the compressor.
8. A control method for a dehumidifier system according to claim 3, performed by the dehumidifier controller, comprising the steps of:
when the winter heating and dehumidifying mode is operated, the first valve port and the fourth valve port of the first four-way reversing valve are controlled to be communicated, and the first valve port and the second valve port of the second four-way reversing valve are controlled to be communicated, so that a refrigerant circularly flows along the output end of the compressor, the first four-way reversing valve, the second heat exchanger, the first throttling assembly, the fourth heat exchanger and the input end of the compressor.
9. The method of controlling a dehumidifier system of claim 8, wherein the method further comprises:
when the winter heating dehumidification mode is operated, a third refrigerant recovery mode is operated;
when the third refrigerant recovery mode is in operation, the fourth valve port and the third valve port of the second four-way reversing valve are controlled to be communicated, the second valve port and the third valve port of the first four-way reversing valve are controlled to be communicated, so that the refrigerant of the third heat exchanger flows back to the compressor along the second four-way reversing valve, the second throttling assembly and the input end of the compressor, and the refrigerant of the first heat exchanger flows back to the compressor along the first four-way reversing valve, the second throttling assembly and the input end of the compressor.
10. A dehumidifier comprising a cabinet and a dehumidifier system according to any of claims 1 to 3, wherein the dehumidifier system employs the control method according to any of claims 4 to 9.
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