CN202361545U - Frequency conversion and fixed frequency combined-type air conditioner and refrigerator all-in-one machine with human body infrared induction function - Google Patents

Abstract

The utility model relates to a frequency conversion and fixed frequency combined-type air conditioner and refrigerator all-in-one machine with a human body infrared induction function. The all-in-one machine is characterized in that an air conditioner and a refrigerator share one frequency conversion compressor, and a controller controls a frequency converter to start and stop, thus the free conversion of the compressor between a fixed frequency mode and a frequency conversion mode is realized, and the purposes of energy conservation, environmental friendliness, the prolongation of the service life of the compressor and the like are achieved; an infrared sensor arranged on an indoor machine is used for perceiving whether a human body is close to an air outlet of the air conditioner of the indoor machine, and if the human body exists for more than certain time, the infrared sensor can transfer an electrical signal to the controller; the controller controls an electromagnetic valve so as to guarantee that a refrigerant does not to flow to an air conditioner refrigeration/heating system for the moment, and thus, the air outlet of the air conditioner on the indoor machine can stop airout for the moment; and when the human body leaves from the indoor machine for a certain distance, the refrigerant continuously flows to the air conditioner refrigeration/heating system, thus the air outlet of the air conditioner can continuously carry out airout, and therefore, the healthy damage of people from cold/hot air of the air conditioner is reduced in a maximum manner.

Description

A frequency conversion and fixed frequency combined air conditioner and refrigerator all-in-one machine with human body infrared induction

technical field

The utility model relates to an air-conditioning and refrigerator integrated machine, in particular to a household appliance equipped with a pyroelectric human body infrared sensor and capable of freely selecting a variable-frequency/fixed-frequency working mode, which belongs to the field of refrigeration and heating systems. the

Background technique

At present, there are roughly two implementation schemes for the existing integrated air conditioner and refrigerator: the first scheme uses an inverter compressor or a fixed frequency compressor to allow the air conditioner and refrigerator to be used together. At present, the technology of fixed-frequency compressors is mature and the price is low, which is more suitable for short-term refrigeration and heating; while the technology of variable-frequency compressors that has gradually become popular is not mature enough, and the price is relatively expensive compared with fixed-frequency compressors. The advantage of "energy saving" can only be manifested when it works continuously for a long time. In addition, although there are some all-in-one machines that share the same compressor with the air conditioner and refrigerator, they can only cool, and the air conditioner has no heating function. This solution will greatly reduce its practicability. the

The second solution is to let the air conditioner and the refrigerator use their own compressors, but this will undoubtedly increase the production cost, and the energy saving effect is not obvious. In addition, due to the inevitable increase in the volume of the outdoor unit, the feasibility of this solution is also greatly improved. lowered. the

Contents of the invention

The purpose of this utility model is to provide an intelligent integrated air conditioner and refrigerator system, which can not only achieve the basic purposes of beauty, energy saving, reduce indoor noise, and reduce indoor floor space, but also prolong the use of the compressor. life, and minimize the harm to human health during use. the

In order to achieve the above purpose, the technical solution of this utility model is to provide a frequency conversion and fixed frequency combined air conditioner and refrigerator all-in-one machine with human body infrared induction, including a body composed of an air conditioner indoor unit and a refrigerator box, and an air conditioner external unit. The air conditioner air outlet and the refrigerator refrigerating room/freezing room are arranged on the body, the air conditioner air outlet is provided with cold/hot air by the air conditioning refrigerating/heating system, and the refrigerating room/freezing room of the refrigerator is refrigerated by the refrigerator refrigerating system, which is characterized in that: the air conditioner refrigerating/ The heating system and the refrigerator refrigeration system share one compressor, the compressor is connected to the frequency converter, and the controller is connected to the frequency converter. The electrical signal sent by the infrared sensor, and then the controller controls the solenoid valve, so that the refrigerant in the compressor stops flowing to the air-conditioning refrigeration/heating system or continues to flow to the air-conditioning refrigeration/heating system. the

Preferably, the input ends of the compressor are respectively connected to the air conditioner liquid storage and the refrigerator liquid storage, the output end of the compressor is connected to the solenoid valve, the solenoid valve has two output ends, one output end is connected to the four-way valve, and the other output The other three ports of the four-way valve are respectively connected to the outdoor heat exchanger of the air conditioner, the liquid reservoir of the air conditioner, and the refrigeration/heating system of the air conditioner. The condenser of the refrigerator and the outdoor heat exchanger of the air conditioner pass through the refrigerator capillary and The air conditioner capillary is connected with the refrigerator refrigeration system and the air conditioner refrigeration/heating system, and an axial flow fan is arranged on the side of the refrigerator condenser. the

Preferably, the refrigerator condenser is placed inside the air conditioner external unit. the

Preferably, a control board is provided on the body, and the control board is connected to the controller. the

Compared with the prior art, the utility model has the following advantages and positive effects: first, the working mode of the compressor can be freely selected. The technology used in the existing air conditioner and refrigerator all-in-one machine can only choose one of frequency conversion or fixed frequency working mode, among which the fixed frequency mode is more suitable for working in a short time, if it works for a long time, it will consume a lot of energy; and The current popular frequency conversion technology is more suitable for long-term continuous work. If the energy-saving effect of short-time work is not obvious, it may consume more energy than the fixed frequency mode under certain circumstances. Moreover, because the current domestic frequency conversion technology is not perfect, Inverter compressors generally have a short lifespan and are expensive to maintain. The utility model can intelligently switch the compressor between two working modes of fixed frequency and frequency conversion, which makes up for the defect that the compressor can only work in a single mode, thereby making it more energy-saving and environmentally friendly to use, and improving the service life of the frequency conversion compressor . Second, a more humanized human body infrared sensing system has been added. When the refrigerator door needs to be opened to pick up and put things away and the air conditioner is working, the cold/hot air discharged from the air outlet of the air conditioner will make people very uncomfortable and sometimes even make people sick. The system uses a human body infrared sensor with a heat detector as the core - a pyroelectric infrared sensor to make up for this defect. When the human body is at a certain distance near the air outlet of the air conditioner of the indoor unit for a certain period of time, the sensor will sense the presence of human body heat and generate an electrical signal, and then transmit the electrical signal to the controller, which is finally controlled by the controller The solenoid valve temporarily prevents the refrigerant from flowing to the air conditioning refrigeration/heating system, and at this time, the air outlet of the air conditioner will temporarily stop the air flow. When the distance between the human body and the air outlet of the air conditioner of the indoor unit exceeds a certain range, the infrared sensor of the human body will generate an electrical signal again and transmit the electrical signal to the controller, and then the controller will control the solenoid valve to make the refrigerant continue to flow into the air conditioning cooling/heating system. At this time, the air outlet of the air conditioner continues to blow out air. the

Description of drawings

Fig. 1 is the internal schematic diagram of the outdoor unit of the present utility model;

Fig. 2 is the front structural diagram of the indoor unit of the present invention;

Fig. 3 is a structural diagram of the back of the indoor unit of the present invention;

Fig. 4A is the first half of the work flow chart of the present utility model;

Fig. 4B is the second half of the working flow chart of the present utility model.

Detailed ways

In order to make the utility model more obvious and understandable, a preferred embodiment is described in detail as follows in conjunction with the accompanying drawings. the

The utility model provides a variable-frequency and fixed-frequency combined air conditioner and refrigerator all-in-one machine with human body infrared induction. As shown in Figure 2, the front of the body is provided with an air conditioner air outlet 12, a pyroelectric human body infrared sensor 13, a display screen 14, a control panel 15, a refrigerator compartment 17 and a freezer compartment 16 from top to bottom. As shown in FIG. 3 , an air-conditioning indoor heat exchanger 18 and a refrigerator evaporator 19 are provided on the back of the body. the

Referring to FIG. 1 , the air-conditioning air outlet 12 is provided with cold/hot air by the air-conditioning refrigeration/heating system 10 , while the refrigerator compartment 17 and the freezer compartment 16 are cooled by the refrigerator refrigeration system 11 . The air conditioning refrigeration/heating system 10 and the refrigerator refrigeration system 11 share one compressor 1 . The compressor 1 is connected to the frequency converter 9 , the controller 8 is connected to the frequency converter 9 , and the controller 8 is directly connected to the compressor 1 . A controller 8 is added at the front part of the frequency converter 9, and the operation mode of the compressor 1 is selected by people operating on the control panel 15 of the indoor unit. If the frequency conversion mode is selected, the control board 15 will generate an electric signal to the controller 8, and the controller 8 will control the operation of the frequency converter 9, and then the compressor 1 will work in the frequency conversion mode according to the frequency generated by the frequency converter 9; If the fixed frequency mode is selected, the controller 8 directly controls the compressor 1 to work at a fixed frequency. the

The input end of the compressor 1 is respectively connected to the air conditioner liquid storage 7 and the refrigerator liquid storage 7', the output end of the compressor 1 is connected to the solenoid valve 2, the solenoid valve 2 has two output ends, one output end is connected to the four-way valve 3, The other output end is connected to the refrigerator condenser 4', and the other three ports of the four-way valve 3 are respectively connected to the air conditioner outdoor heat exchanger 4, the air conditioner liquid reservoir 7 and the air conditioner refrigeration/heating system 10, and the refrigerator condenser 4' and the air conditioner outdoor heat exchanger 4 are respectively connected to the refrigerator refrigeration system 11 and the air conditioner refrigeration/heating system 10 through the refrigerator capillary 6' and the air conditioner capillary 6, and an axial flow fan is arranged on the side of the refrigerator condenser 4' 5. the

The controller 8 is also connected to the control board 15 and receives signals from the pyroelectric human body infrared sensor 13 . The overheating discharge type human body infrared sensor 13 can make the air outlet 12 of the air conditioner temporarily stop the air outlet when there are people at a certain distance in front of the indoor unit, and automatically restart the air outlet when the person leaves the indoor unit for a certain distance, thereby avoiding cold/ The harm of heat to the human body. the

The specific implementation of the automatic start and stop of the air-conditioning outlet 12 is: add a button at the lower part of the air-conditioning outlet 12 of the indoor unit that can sense whether there is an alarm within a certain distance (it must also reach a certain time, such as when people are picking and placing things in the refrigerator). The pyroelectric human body infrared sensor 13 that exists in the human body, when people approach the front of the indoor unit and the air outlet 12 of the air conditioner is blowing out the air, the pyroelectric human body infrared sensor 13 will sense the existence of the human body, and at this moment it will generate a The electrical signal is sent to the controller 8, and then the controller 8 controls the solenoid valve 2 so that the refrigerant no longer flows to the air conditioning refrigeration/heating system 10, and at this time the air outlet of the air conditioner will stop the air; and when the human body reaches a certain distance from the indoor unit , the human body infrared sensor 13 will generate an electric signal again to the controller 8, and then the controller 8 controls the solenoid valve 2 to make the refrigerant continue to flow to the air-conditioning refrigeration/heating system 10, and now the air-conditioning outlet will continue to blow out. the

The air-conditioning refrigeration/heating system 10 and the refrigerator refrigeration system 11 are two independent systems, so they can work independently or simultaneously. The working principle and working process of the utility model under five different situations will be described in detail below with reference to FIG. 1 to FIG. 4B . the

Situation 1) The refrigerator does not work, and the air conditioner is refrigerated:

The high-temperature and high-pressure gas refrigerant generated by the compressor 1 flows only to the outdoor heat exchanger 4 of the air conditioner after passing through the action of the solenoid valve 2 and the four-way valve 3, and forms a high-temperature and high-pressure liquid, then flows through the air-conditioning capillary 6, and is throttled by the air-conditioning capillary 6 The decompression action forms a low-temperature and low-pressure liquid, and then the refrigerant flows into the heat exchanger 18 in the air-conditioning room, and becomes a low-temperature and low-pressure gas after absorbing indoor heat, and finally enters the compressor 1 and becomes a high-temperature and high-pressure gas again, and so on.

When it is necessary to select the working mode of the compressor, an electric signal is generated to the controller 8 through the button on the control board 15, and the controller 8 selects whether to use the frequency converter 9 or not. If the frequency conversion mode is selected, the compressor 1 is controlled to work at different frequencies through the frequency converter 9 first, and then the compressor 1 is controlled to work at different frequencies; frequency work. the

Situation 2) The refrigerator is not working, and the air conditioner is heating:

Similar to case 1), except that the high-temperature and high-pressure gas refrigerant produced by compressor 1 only flows to the heat exchanger 18 in the air-conditioning room after being acted on by solenoid valve 2 and four-way valve 3, and the refrigerant flow sequence is just opposite to case 1.

The principle of selecting the working mode of the compressor is exactly the same as that of case one. the

Situation 3) The refrigerator is refrigerated and the air conditioner does not work:

Similar to case 1), the high-temperature and high-pressure gas refrigerant produced by compressor 1 only flows to the refrigerator condenser 4' after being acted on by the solenoid valve 2 and the four-way valve 3, and forms a high-temperature and high-pressure liquid, and then passes through the throttling of the refrigerator capillary 6' The decompression effect forms a low-temperature and low-pressure liquid, and then the refrigerant flows into the evaporator 19 of the refrigerator, and becomes a low-temperature and low-pressure gas after absorbing heat in the box, and finally enters the compressor and becomes a high-temperature and high-pressure gas after being compressed by the compressor, and so on.

The principle of selecting the working mode of the compressor is exactly the same as that of case 1 and case 2. the

Situation 4) The refrigerator is cooled, and the air conditioner is also cooled:

After the high-temperature and high-pressure gas refrigerant generated by the compressor 1 passes through the action of the solenoid valve 2 and the four-way valve 3, part of it flows to the outdoor heat exchanger 4 of the air conditioner, and the other part flows to the condenser 4' of the refrigerator, and forms high temperature in the respective outdoor heat exchangers. The high-pressure liquid then passes through the air-conditioning capillary 6 and the refrigerator capillary 6' respectively, through the throttling and decompression of the capillary to form a low-temperature and low-pressure gas, and then the refrigerant flows into the heat exchanger 18 in the air-conditioning room and the evaporator 19 in the refrigerator respectively, and is absorbed in the absorption chamber and the refrigerator. The heat in the body turns into a low-temperature and low-pressure gas, and finally enters the compressor to become a high-temperature and high-pressure gas again, and so on.

If both the air conditioner and the refrigerator can freely choose the working mode of the compressor, then there must be two compressors 1 and two frequency converters 9, such a design will inevitably greatly increase the production cost and manufacturing difficulty, and because the actual power of the refrigerator is relatively Small, the choice of frequency conversion and fixed frequency has little impact on energy saving, and the power of the air conditioner is often relatively large, so the utility model determines the working mode of the compressor through the air conditioner. For example, if the refrigerator is working in frequency conversion mode, it will be more energy-saving to select the fixed frequency mode when the air conditioner needs to be used and the working time of the air conditioner is not expected to be long. signal, after the electrical signal reaches the controller 8, it will control the frequency converter 9 and make it stop working, so that the compressor 1 starts to work in the constant frequency mode. the

Situation 5) The refrigerator cools, while the air conditioner heats:

After the high-temperature and high-pressure gas refrigerant produced by the compressor 1 passes through the electromagnetic valve 2 and the four-way valve 3, part of it flows to the refrigerator condenser 4', and part of it flows to the heat exchanger 18 in the air-conditioning room, and respectively forms high-temperature and high-pressure liquids. The high-temperature and high-pressure liquid passes through the action of the refrigerator capillary 6' to form a low-temperature and low-pressure liquid, and then the low-temperature and low-pressure liquid flows through the refrigerator evaporator 19 to absorb heat in the box to form a low-temperature and low-pressure gas, and finally enters the compressor 1 to become a high-temperature and high-pressure gas again, so that The refrigerator completes a cooling process, and the cycle continues.

The high-temperature and high-pressure liquid in the air-conditioning indoor heat exchanger 18 flows through the air-conditioning capillary 6 to form a low-temperature and low-pressure liquid, and then enters the heat exchanger 4 of the outdoor unit of the air conditioner to absorb heat to form a low-temperature and low-pressure gas, and finally flows into the compressor to become a high-temperature and high-pressure gas again. , so that the air conditioner completes a heating process and continues the cycle. the

The method of selecting the working mode of the compressor is similar to case 4). the

Claims (4)

1. variable frequency and constant frequency assembled air-conditioner refrigerator integrated machine with the human body infrared induction; Comprise the body and the outdoor machine of air-conditioner that combine by indoor apparatus of air conditioner and refrigerator body; On body, be provided with air-conditioner air outlet (12) and cold compartment of refrigerator/refrigerating chamber, air-conditioner air outlet (12) provides cold wind/hot blast by air conditioner refrigerating/heating (10), and cold compartment of refrigerator/refrigerating chamber is freezed by refrigerator refrigeration system (11); It is characterized in that: air conditioner refrigerating/heating (10) and the shared compressor of refrigerator refrigeration system (11) (1); Compressor (1) connects frequency converter (9), and controller (8) connects frequency converter (9), simultaneously; Controller (8) directly connects compressor (1); Locate to be provided with human-body infrared sensing device (13) at air-conditioner air outlet (12), receive the signal of telecommunication that human body infrared sensor (13) sends, then controller (8) control magnetic valve (2) by controller (8); Make the middle refrigerant of compressor (1) stop to flow to air conditioner refrigerating/heating (10), or continue to flow to air conditioner refrigerating/heating (10).

2. a kind of variable frequency and constant frequency assembled air-conditioner refrigerator integrated machine as claimed in claim 1 with the human body infrared induction; It is characterized in that: the input of said compressor (1) connects air conditioning liquid reservoir (7) and refrigerator reservoir (7') respectively; The output of compressor (1) connects magnetic valve (2); Magnetic valve (2) has two outputs; An output connects cross valve (3); Another output connects condenser for refrigerator (4'); Other three ports of cross valve (3) connect air conditioner outdoor heat exchanger (4), air conditioning liquid reservoir (7) and said air conditioner refrigerating/heating (10) respectively, and condenser for refrigerator (4') and air conditioner outdoor heat exchanger (4) link to each other with said refrigerator refrigeration system (11) and said air conditioner refrigerating/heating (10) with air conditioner capillary pipe (6) through refrigerator capillary (6') respectively, are provided with aerofoil fan (5) at the side of condenser for refrigerator (4').

3. a kind of variable frequency and constant frequency assembled air-conditioner refrigerator integrated machine with the human body infrared induction as claimed in claim 2, it is characterized in that: said condenser for refrigerator (4') places in the said outdoor machine of air-conditioner.

4. a kind of variable frequency and constant frequency assembled air-conditioner refrigerator integrated machine with the human body infrared induction as claimed in claim 1, it is characterized in that: on said body, be provided with control panel (14), control panel (14) connects said controller (8).

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