Air conditioner, water heater and dish-washing machine combined control system

Abstract

The air conditioner, water heater and dish-washing machine combined control system comprises an indoor heat exchanger, a target system, a first heat exchanger, a second heat exchanger and a compressor. The indoor heat exchanger is connected with a circulating water pipeline of the first heat exchanger so as to exchange heat with the indoor environment based on circulating water output by the first heat exchanger; one end of a refrigerant pipeline of the first heat exchanger is connected with a refrigerant pipeline of the second heat exchanger, and the other end of the refrigerant pipeline of the first heat exchanger is connected with the compressor so as to exchange heat based on a refrigerant output by the second heat exchanger and circulating water output by the indoor heat exchanger and transmit the refrigerant subjected to heat exchange to the compressor; one end of a refrigerant pipeline of the second heat exchanger is connected with the compressor, and the other end is connected with a refrigerant pipeline of the first heat exchanger so as to exchange heat with circulating water in a circulating water pipeline of the second heat exchanger based on a refrigerant output by the compressor; a circulating water pipeline of the second heat exchanger communicates with a target system so as to provide heat-exchanged circulating water for the target system, and the target system at least comprises a water heater and a dish washing machine.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning control, and in particular to an air conditioning, water heater and dishwasher combined control system. Background Art

[0002] In the prior art, air conditioners, water heaters, and dishwashers mostly work independently. On the one hand, the heat from the air conditioner in the indoor cooling mode is directly discharged to the outdoor environment. On the other hand, the water heater and dishwasher need to consume electricity to make hot water or dry dishes. Therefore, the existing home appliances consume more electricity when working, and the energy utilization rate is low. Summary of the invention

[0003] To this end, this application discloses the following technical solutions:

[0004] The present application provides an air conditioner, water heater, and dishwasher combined control system, comprising:

[0005] Indoor heat exchanger, target system, first heat exchanger, second heat exchanger and compressor;

[0006] The indoor heat exchanger is connected to the circulating water pipeline of the first heat exchanger so as to exchange heat between the circulating water output by the first heat exchanger and the indoor environment;

[0007] One end of the refrigerant pipeline of the first heat exchanger is connected to the refrigerant pipeline of the second heat exchanger, and the other end is connected to the compressor, so as to exchange heat between the refrigerant output by the second heat exchanger and the circulating water output by the indoor heat exchanger, and transmit the refrigerant after heat exchange to the compressor;

[0008] One end of the refrigerant pipeline of the second heat exchanger is connected to the compressor, and the other end is connected to the refrigerant pipeline of the first heat exchanger, so as to exchange heat between the refrigerant output by the compressor and the circulating water in the circulating water pipeline of the second heat exchanger;

[0009] The circulating water pipeline of the second heat exchanger is connected to the target system to provide the target system with circulating water after heat exchange, and the target system at least includes a water heater and a dishwasher.

[0010] Optionally, the target system further includes a first water side switch three-way valve, a first circulating water pump, a buffer water tank and a water purification module;

[0011] The circulating water pipeline of the second heat exchanger is connected to the first circulating water pump through the first water-side switch three-way valve, and the first circulating water pump is used to pump the circulating water of the circulating water pipeline of the second heat exchanger into the buffer water tank;

[0012] The water purification module is used to purify the water in the buffer water tank and supply the purified water to the water heater and the dishwasher.

[0013] Optionally, the target system further includes a first water-side proportional three-way valve;

[0014] The first water-side proportional three-way valve is connected to the dishwasher, the water heater and the water purification module to adjust the water flow entering the dishwasher and the water flow entering the water heater.

[0015] Optionally, the dishwasher has a first circulation drain port, and the first circulation drain port is connected to a circulation water pipeline of the second heat exchanger;

[0016] The dishwasher is used to discharge water to the circulating water pipeline of the second heat exchanger through the first circulating drain port in the first mode to exchange heat in the second heat exchanger;

[0017] When the dishwasher is in the first mode, heat is exchanged between the circulating water flowing in and the air in the dishwasher chamber.

[0018] Optionally, the water heater has a second circulation drain port, and the second circulation drain port is connected to a circulation water pipeline of the second heat exchanger;

[0019] The water heater is used to discharge water to the circulating water pipeline of the second heat exchanger through the second circulating drain port to exchange heat in the second heat exchanger.

[0020] Optionally, further comprising a third heat exchanger located in the outdoor environment;

[0021] One end of the circulation pipeline of the third heat exchanger is connected to the compressor, and the other end is connected to the refrigerant pipeline of the first heat exchanger, so that the refrigerant flowing through the third heat exchanger exchanges heat with the outdoor environment.

[0022] Optionally, a proportional three-way valve on the refrigerant side is also included;

[0023] The refrigerant-side proportional three-way valve connects one end of the refrigerant pipeline of the second heat exchanger, one end of the refrigerant pipeline of the third heat exchanger and the compressor to adjust the refrigerant flow entering the second heat exchanger and the refrigerant flow entering the third heat exchanger.

[0024] Optionally, the first heat exchanger is also used for:

[0025] exchanging heat between the refrigerant output by the compressor and the circulating water in the circulating water pipeline, and transmitting the refrigerant after the heat exchange to the third heat exchanger;

[0026] The third heat exchanger is used for:

[0027] The refrigerant output by the first heat exchanger exchanges heat with the outdoor environment, and the refrigerant after the heat exchange is transmitted to the compressor.

[0028] Optionally, the circulating water pipeline of the first heat exchanger is also connected to the target system to provide the target system with circulating water after heat exchange.

[0029] Optionally, it also includes a second water-side proportional three-way valve;

[0030] The second water-side proportional three-way valve connects the circulating water pipeline of the first heat exchanger, the circulating water pipeline of the indoor heat exchanger and the target system to adjust the water flow entering the circulating water pipeline of the indoor heat exchanger and the water flow entering the target system.

[0031] The beneficial effect of the present application is that when the indoor heat exchanger is used to cool the indoor environment, the system of the present solution can utilize the first heat exchanger, the second heat exchanger and the compressor to recover part of the heat discharged from the indoor environment by the indoor heat exchanger, and utilize the discharged heat to provide it to the water heater and dishwasher that need heating. Therefore, the present solution can improve the energy utilization rate of household appliances to a certain extent and reduce the power consumption of household appliances that need heating, such as water heaters and dishwashers. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0033] Figure 1 It is a structural schematic diagram of an air conditioner, water heater and dishwasher joint control system provided in an embodiment of the present application;

[0034] Figure 2 This is a schematic diagram of the working principle of an air conditioner, water heater and dishwasher joint control system in cooling mode provided by an embodiment of the present application;

[0035] Figure 3 It is a schematic diagram of the working principle of an air conditioner, water heater and dishwasher joint control system in a heating mode provided by an embodiment of the present application;

[0036] Figure 4 It is a schematic diagram of the heat exchange principle of a dishwasher provided in an embodiment of the present application. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0038] To facilitate understanding of the system of the embodiment of the present application, components and their numbers that may be involved in the system are first listed.

[0039] Compressor 101, four-way reversing valve 102, third heat exchanger 103, second heat exchanger 104, first heat exchanger 105, electronic expansion valve 106, first circulating water pump 201, buffer water tank 202, water purification module 203, water heater 204, dishwasher 205, second circulating water pump 206, indoor heat exchanger 207, refrigerant side proportional three-way valve 301, first water side switch three-way valve 302, mixing valve 303, first water side proportional three-way valve 304, second water side switch three-way valve 305, first water supply valve 306, dishwasher drain valve 307, second water side proportional three-way valve 308, second water supply valve 309, first stop valve 310.

[0040] Among them, the water heater 204 and the dishwasher 205 constitute the target system 200 of the present application.

[0041] This application provides a joint control system for air conditioners, water heaters and dishwashers. Figure 1 , is a structural diagram of the system, which may include the following components.

[0042] Indoor heat exchanger 207, target system, first heat exchanger 105, second heat exchanger 104 and compressor 101;

[0043] The indoor heat exchanger 207 is connected to the circulating water pipeline of the first heat exchanger 105, so as to exchange heat between the circulating water output by the first heat exchanger 105 and the indoor environment;

[0044] One end of the refrigerant pipeline of the first heat exchanger 105 is connected to the refrigerant pipeline of the second heat exchanger 104, and the other end is connected to the compressor 101, so as to exchange heat between the refrigerant output by the second heat exchanger 104 and the circulating water output by the indoor heat exchanger 207, and transmit the refrigerant after heat exchange to the compressor 101;

[0045] One end of the refrigerant pipeline of the second heat exchanger 104 is connected to the compressor 101, and the other end is connected to the refrigerant pipeline of the first heat exchanger 105, so as to exchange heat with the circulating water in the circulating water pipeline of the second heat exchanger 104 based on the refrigerant output by the compressor 101;

[0046] The circulating water pipeline of the second heat exchanger 104 is connected to the target system to provide the target system with circulating water after heat exchange. The target system at least includes a water heater 204 and a dishwasher 205 .

[0047] Optionally, the system may also include Figure 1 The four-way reversing valve 102 shown is used to control the high-temperature and high-pressure refrigerant compressed by the compressor 101 to be output to the first heat exchanger 105 or to the second heat exchanger 104, and to control the refrigerant to flow back to the compressor 101 from the first heat exchanger 105 or from the second heat exchanger 104.

[0048] The four-way reversing valve 102 is an optional component. In some optional embodiments, the refrigerant output by the compressor 101 can be controlled to flow into the first heat exchanger 105 or the second heat exchanger 104 by other means, such as other valves, special piping structures, etc., which are not limited to the above-mentioned four-way reversing valve 102.

[0049] The first heat exchanger 105 and the second heat exchanger 104 can both be plate heat exchangers. The plate heat exchanger contains a circulating water pipeline and a refrigerant pipeline, and can achieve heat exchange between the refrigerant and the circulating water flowing through the plate heat exchanger. For example, the circulating water in the circulating water pipeline is heated by a high-temperature and high-pressure refrigerant, and the circulating water in the circulating water pipeline is cooled by a low-temperature and low-pressure refrigerant.

[0050] The indoor heat exchanger 207 of this embodiment can be an indoor heat exchanger of a water air conditioner, which can exchange heat with the indoor environment by circulating water flowing through the circulating water pipeline, thereby achieving cooling and / or heating effects on the indoor environment. As an example, the indoor heat exchanger 207 includes but is not limited to air conditioning terminals such as fan coil units and indoor heat exchange equipment such as floor heating.

[0051] In the system of this embodiment, the indoor heat exchanger 207 can work in the cooling mode, and the indoor environment is cooled by circulating water flowing through the circulating water pipeline of the indoor heat exchanger 207. In this case, the system can work according to the following working principle.

[0052] The high-temperature and high-pressure refrigerant compressed by the compressor 101 enters the refrigerant pipeline of the second heat exchanger 104 after passing through the four-way reversing valve 102 , and exchanges heat with the circulating water flowing in the circulating water pipeline of the second heat exchanger 104 .

[0053] After heat exchange, the refrigerant pipeline of the second heat exchanger 104 outputs high-temperature circulating water and low-temperature refrigerant, and the low-temperature refrigerant enters the refrigerant pipeline of the first heat exchanger 105 along the refrigerant pipeline.

[0054] Among them, see Figure 2The system of this embodiment may also include an electronic expansion valve 106 arranged between the refrigerant pipeline of the second heat exchanger 104 and the refrigerant pipeline of the first heat exchanger 105. The electronic expansion valve 106 can throttle and reduce the pressure of the fluid flowing through the valve. The low-temperature refrigerant output by the second heat exchanger 104 is converted into low-temperature and low-pressure refrigerant after passing through the electronic expansion valve 106, and then enters the refrigerant pipeline of the first heat exchanger 105.

[0055] Need to explain, Figure 2 The arrows on the circulating water pipeline indicate the flow direction of the circulating water, and the arrows on the refrigerant pipeline indicate the flow direction of the refrigerant.

[0056] In the first heat exchanger 105, the low-temperature refrigerant (or low-temperature and low-pressure refrigerant) in the refrigerant pipeline exchanges heat with the circulating water in the circulating water pipeline. The first heat exchanger 105 outputs high-temperature refrigerant and low-temperature circulating water. The output high-temperature refrigerant flows back to the compressor 101 through the four-way reversing valve 102 to complete the circulation of the refrigerant. The low-temperature circulating water output by the first heat exchanger 105 enters the indoor heat exchanger 207. The indoor heat exchanger 207 uses the low-temperature circulating water to absorb the heat of the indoor environment to cool the indoor environment. The circulating water with the temperature increased due to the absorption of indoor heat enters the circulating water pipeline of the first heat exchanger 105 for cooling.

[0057] On the other hand, the high-temperature circulating water output by the second heat exchanger 104 can enter the target system, specifically the water heater 204 and the dishwasher 205 of the target system. The water heater 204 can output the high-temperature circulating water as bathing water, or can use the high-temperature circulating water to assist in heating bathing water. The dishwasher 205 can output the high-temperature circulating water as cleaning water, or can use the high-temperature circulating water to assist in heating cleaning water, or can use the high-temperature circulating water to heat the air to assist in drying when drying tableware.

[0058] It can be seen from the above working principle that in the system of this embodiment, the circulating water of the indoor heat exchanger 207 can transfer the heat of the indoor environment to the refrigerant flowing through the first heat exchanger 105, and the refrigerant flowing out of the first heat exchanger 105 transfers at least part of the heat carried to the circulating water flowing through the second heat exchanger 104 through the compressor 101, the four-way reversing valve 102 and the second heat exchanger 104, so that the water heater 204 and the dishwasher 205 can utilize this part of the heat.

[0059] In summary, the beneficial effects of the system of this embodiment are:

[0060] When the indoor heat exchanger 207 is used to cool the indoor environment, the system of this solution can use the first heat exchanger 105, the second heat exchanger 104 and the compressor 101 to recover part of the heat discharged from the indoor environment by the indoor heat exchanger 207, and use the discharged heat to provide it to the water heater 204 and the dishwasher 205 that need heating. Therefore, this solution can improve the energy utilization rate of household appliances to a certain extent and reduce the power consumption of household appliances such as the water heater 204 and the dishwasher 205 that need heating.

[0061] In some optional embodiments, see Figure 2 , the target system also includes a first water side switch three-way valve 302, a first circulating water pump 201, a buffer water tank 202 and a water purification module 203;

[0062] The circulating water pipeline of the second heat exchanger 104 is connected to the first circulating water pump 201 through the first water-side switch three-way valve 302. The first circulating water pump 201 is used to pump the circulating water of the circulating water pipeline of the second heat exchanger 104 into the buffer water tank 202.

[0063] The water purification module 203 is used to purify the water in the buffer water tank 202 and supply the purified water to the water heater 204 and the dishwasher 205 .

[0064] A first end of the first water-side switch three-way valve 302 is connected to the circulating water pipeline of the second heat exchanger 104 , a second end is connected to the circulating water pipeline of the first heat exchanger 105 , and a third end is connected to the first circulating water pump 201 .

[0065] Among them, when the indoor heat exchanger 207 works in the cooling mode, the first water side switch three-way valve 302 can connect the circulating water pipeline of the first circulating water pump 201 and the second heat exchanger 104, and at the same time isolate the circulating water pipeline of the first circulating water pump 201 and the first heat exchanger 105.

[0066] The water purification module 203 may have a variety of water purification functions, including but not limited to impurity removal, filtration, hard water softening and other functions.

[0067] The first circulating water pump 201 and the buffer water tank 202 can be provided to adjust the flow of circulating water in the circulating water pipeline of the second heat exchanger 104, and can store some high-temperature circulating water for use when the dishwasher 205 and the water heater 204 do not need high-temperature circulating water.

[0068] In some optional embodiments, such as Figure 2 As shown, the target system further includes a first water-side proportional three-way valve 304;

[0069] The first water-side proportional three-way valve 304 is connected to the dishwasher 205 , the water heater 204 and the water purification module 203 to adjust the water flow entering the dishwasher 205 and the water flow entering the water heater 204 .

[0070] One port of the first water-side proportional three-way valve 304 is connected to the water outlet of the water purification module 203, another port is connected to the water heater 204, and another port is connected to the dishwasher 205.

[0071] Therefore, the first water-side proportional three-way valve 304 can adjust the proportional opening according to the heat and water flow requirements of the water heater 204 and the dishwasher 205, thereby adjusting the water flow of the two routes.

[0072] In some embodiments, the first water-side proportional three-way valve 304 may be controlled by a specific controller, which may monitor the heat and water flow requirements of the water heater 204 and the dishwasher 205 to control the first water-side proportional three-way valve 304. Alternatively, the first water-side proportional three-way valve 304 may be connected to an external knob (or other component capable of adjusting the opening), so that a user may manually adjust the proportional opening by adjusting the knob.

[0073] Optionally, the dishwasher 205 has a first circulation drain port, and the first circulation drain port is connected to the circulation water pipeline of the second heat exchanger 104;

[0074] The dishwasher 205 is used to discharge water to the circulating water pipeline of the second heat exchanger 104 through the first circulating drain port in the first mode to exchange heat in the second heat exchanger 104;

[0075] When the dishwasher 205 is in the first mode, heat is exchanged between the circulating water flowing in and the air in the cavity of the dishwasher 205 .

[0076] Optionally, the system may further include a first water replenishment valve 306 and a dishwasher drain valve 307 .

[0077] Please combine Figure 2 and Figure 4 The dishwasher 205 may have a dishwasher switch three-way valve 402 and a dishwasher heat exchanger 401 , based on which the dishwasher 205 may have two working modes.

[0078] One working mode of the dishwasher 205 is the first mode. In the first mode, the high-temperature circulating water entering the dishwasher 205 can be mixed with the circulating water replenished by the first water replenishment valve 306 and then conducted by the dishwasher switch three-way valve 402 to enter the dishwasher heat exchanger 401, or it can be directly entered into the dishwasher heat exchanger 401 by the dishwasher switch three-way valve 402 without mixing. In the dishwasher heat exchanger 401, the high-temperature circulating water can preheat the air, so that the dishwasher 205 can use the preheated air for the drying process of the dishwashing program, and the circulating water flowing out of the dishwasher heat exchanger 401 can enter the circulating water pipeline of the second heat exchanger 104 through the first circulation drain port of the dishwasher 205 for subsequent heat exchange process.

[0079] Another working mode of the dishwasher 205 is the second mode. The high-temperature circulating water entering the dishwasher 205 can be mixed with the circulating water replenished by the first water replenishment valve 306 and then conducted into the chamber of the dishwasher 205 by the dishwasher switch three-way valve 402, or can be directly entered into the chamber of the dishwasher 205 without mixing and conducted by the dishwasher switch three-way valve 402 for the rinsing process of the dishwashing program (including but not limited to main washing and hot rinsing, etc.). The impurity-containing water after the rinsing process is discharged from the water circulation process by the dishwasher drain valve 307.

[0080] Optionally, the system of this embodiment may further include a second water-side switch three-way valve 305, wherein the first end of the second water-side switch three-way valve 305 is connected to the circulation drain outlet of the dishwasher 205 and the water heater 204 in the target system, the second end is connected to the circulation water pipeline of the second heat exchanger 104, and the third end is connected to the circulation water pipeline of the first heat exchanger 105. The second water-side switch three-way valve 305 is used to control the circulation water flowing out of the dishwasher 205 and the water heater 204 to enter the circulation water pipeline of the first heat exchanger 105 or the circulation water pipeline of the second heat exchanger 104. When the indoor heat exchanger 207 works in the cooling mode, the first end and the second end of the second water-side switch three-way valve 305 are unidirectionally connected, so that the circulation water flowing out of the dishwasher 205 and the water heater 204 enters the circulation water pipeline of the second heat exchanger 104.

[0081] Optionally, the water heater 204 has a second circulation drain port, and the second circulation drain port is connected to the circulation water pipeline of the second heat exchanger 104;

[0082] The water heater 204 is used to discharge water to the circulating water pipeline of the second heat exchanger 104 through the second circulating drain port to exchange heat in the second heat exchanger 104 .

[0083] Optionally, the system of this embodiment also includes a mixing valve 303 connected to the water heater 204. The mixing valve 303 can be connected to the normal temperature water circuit at the user end, so that the normal temperature water and the high-temperature circulating water entering the water heater 204 are mixed and used as domestic hot water; it can also be used to replenish water to the water heater 204.

[0084] A second circulation drain outlet of the water heater 204 and a second water side switch three-way valve 305 may be provided between the water heater 204 and the second water side switch three-way valve 305. Figure 2 The first stop valve 310 shown in the figure can be in a closed state by default. When the water temperature in the water heater 204 is lower than the set value, the first stop valve 310 is opened to discharge the low-temperature circulating water, so that the low-temperature circulating water enters the first heat exchanger 105 or the second heat exchanger 104 for reheating to increase the water temperature in the water tank of the water heater 204.

[0085] In some optional embodiments, see Figure 2 , the system of this embodiment may further include a third heat exchanger 103 located in the outdoor environment;

[0086] One end of the circulation pipeline of the third heat exchanger 103 is connected to the compressor 101, and the other end is connected to the refrigerant pipeline of the first heat exchanger 105, so that the refrigerant flowing through the third heat exchanger 103 exchanges heat with the outdoor environment.

[0087] The third heat exchanger 103 may be an air-cooled heat exchanger, which may have a refrigerant pipeline. The third heat exchanger 103 may exchange heat between the refrigerant flowing through the refrigerant pipeline and the outdoor environment, for example, discharge the heat carried by the refrigerant to the outdoor environment, or absorb heat from the outdoor environment with the refrigerant.

[0088] When the indoor heat exchanger 207 works in cooling mode, part of the high-temperature and high-pressure refrigerant discharged by the compressor 101 can enter the refrigerant pipeline of the second heat exchanger 104, and the other part can enter the refrigerant pipeline of the third heat exchanger 103. Both refrigerants output by the second heat exchanger 104 and the third heat exchanger 103 enter the refrigerant pipeline of the first heat exchanger 105 through the electronic expansion valve 106.

[0089] Optionally, the system of this embodiment may further include a refrigerant-side proportional three-way valve 301;

[0090] like Figure 2 As shown, the refrigerant-side proportional three-way valve 301 connects one end of the refrigerant pipeline of the second heat exchanger 104, one end of the refrigerant pipeline of the third heat exchanger 103 and the compressor 101 to adjust the refrigerant flow entering the second heat exchanger 104 and the refrigerant flow entering the third heat exchanger 103.

[0091] Among them, the proportional three-way valve 301 on the refrigerant side can adjust the proportional opening under the control of a specific controller according to the heat demand of the water heater 204 and the dishwasher 205, and then adjust the refrigerant flow entering the second heat exchanger 104 and the third heat exchanger 103, so as to achieve the effect of controlling the water temperature of the water heater 204 and the dishwasher 205.

[0092] For example, when the water heater 204 and the dishwasher 205 require circulating water at a higher temperature, more refrigerant can be controlled to enter the second heat exchanger 104 and less refrigerant can enter the third heat exchanger 103. In extreme cases, the high-temperature refrigerant output by the compressor 101 can also be controlled to enter the second heat exchanger 104 instead of the third heat exchanger 103.

[0093] When the water heater 204 and the dishwasher 205 require circulating water at a lower temperature, more refrigerant can be controlled to enter the third heat exchanger 103 and less refrigerant can enter the second heat exchanger 104. In extreme cases, the high-temperature refrigerant output by the compressor 101 can also be controlled to enter the third heat exchanger 103 instead of the second heat exchanger 104.

[0094] Optional, such as Figure 2 As shown, the system of this embodiment may also include a second stop valve 311 and a third stop valve 312, the second stop valve 311 is located between the refrigerant pipeline of the third heat exchanger 103 and the electronic expansion valve 106, and the third stop valve 312 is located between the refrigerant pipeline of the second heat exchanger 104 and the electronic expansion valve 106.

[0095] When the high-temperature and high-pressure refrigerant output by the compressor 101 needs to enter the second heat exchanger 104 and the third heat exchanger 103 respectively, the second stop valve 311 and the third stop valve 312 are both opened; when the high-temperature and high-pressure refrigerant output by the compressor 101 only needs to enter the second heat exchanger 104 but does not need to enter the third heat exchanger 103, the second stop valve 311 is closed and the third stop valve 312 is opened; when the high-temperature and high-pressure refrigerant output by the compressor 101 only needs to enter the third heat exchanger 103 but does not need to enter the second heat exchanger 104, the second stop valve 311 is opened and the third stop valve 312 is closed.

[0096] In some optional embodiments, the water heater 204 and the dishwasher 205 may be equipped with built-in electric heating devices, and when the heating capacity of the second heat exchanger 104 is insufficient, electric heating is used to supplement the heat.

[0097] In some optional embodiments, the system may further include a second circulating water pump 206 and a second water replenishment valve 309 .

[0098] The second circulating water pump 206 is used to pump the circulating water flowing out of the circulating water pipeline of the first heat exchanger 105 into the indoor heat exchanger 207. The second water replenishment valve 309 can be located between the second circulating water pump 206 and the circulating water pipeline of the first heat exchanger 105, and is connected to the normal temperature water pipe, and is used to replenish water to the circulating water pipeline, or to mix the normal temperature water and the circulating water output by the first heat exchanger 105 to adjust the temperature of the circulating water entering the indoor heat exchanger 207.

[0099] In some optional embodiments, the indoor heat exchanger 207 can also operate in a heating mode, in which case the circulating water flowing into the indoor heat exchanger 207 is high-temperature circulating water, and the indoor heat exchanger 207 uses the high-temperature circulating water to heat the indoor environment.

[0100] The working principle of the system in this embodiment in the heating mode can be found in Figure 3 , where the arrows of the refrigerant pipeline and the circulating water pipeline indicate the flow direction of the fluid in the corresponding pipeline.

[0101] Optionally, in this embodiment, the first heat exchanger 105 can be used for:

[0102] Based on the heat exchange between the refrigerant output by the compressor 101 and the circulating water in the circulating water pipeline, the refrigerant after the heat exchange is transmitted to the third heat exchanger 103;

[0103] The third heat exchanger 103 can be used for:

[0104] The refrigerant outputted from the first heat exchanger 105 exchanges heat with the outdoor environment, and the refrigerant after the heat exchange is transmitted to the compressor 101 .

[0105] like Figure 3 As shown, when the indoor heat exchanger 207 is working in the heating mode, the third stop valve 312 is closed and the second stop valve 311 is opened and conducted, and the high-temperature and high-pressure refrigerant output by the compressor 101 enters the refrigerant pipeline of the first heat exchanger 105 after passing through the four-way reversing valve 102 to heat the circulating water in the circulating water pipeline of the first heat exchanger 105, and then the low-temperature refrigerant flows out of the first heat exchanger 105, and becomes a low-temperature and low-pressure refrigerant after throttling and reducing the pressure by the electronic expansion valve 106. The low-temperature and low-pressure refrigerant enters the refrigerant pipeline of the third heat exchanger 103, exchanges heat with the outdoor environment in the third heat exchanger 103, and finally flows out of the refrigerant pipeline of the third heat exchanger 103, returns to the compressor 101 through the four-way reversing valve 102, and completes the refrigerant circulation.

[0106] On the one hand, the high-temperature circulating water heated by the refrigerant in the first heat exchanger 105 can enter the indoor heat exchanger 207 through the second circulating water pump 206, thereby providing heat for the indoor environment where the indoor heat exchanger 207 is located.

[0107] On the other hand, the circulating water pipeline of the first heat exchanger 105 is also connected to the target system to provide the target system with circulating water after heat exchange.

[0108] Specifically, the passage between the first end and the third end of the first water side switch three-way valve 302 can be closed, and the passage between the second end and the third end can be opened and conducted, and a part of the high-temperature circulating water output by the first heat exchanger 105 can enter the buffer water tank 202 through the first water side switch three-way valve 302 and the first circulating water pump 201, thereby providing heat for the dishwasher 205 and the water heater 204. When the indoor heat exchanger 207 is in the heating mode, the working principle of the dishwasher 205 and the water heater 204 can be consistent with the working principle of the indoor heat exchanger 207 in the cooling mode in the aforementioned embodiment, and will not be repeated.

[0109] In addition, when the indoor heat exchanger 207 is in the heating mode, the second end and the third end of the second water side switch three-way valve 305 are unidirectionally connected, and the passage between the first end and the second end is closed. The circulating water discharged from the water heater 204 and the dishwasher 205 passes through the second water side switch three-way valve 305 and enters the circulating water pipeline of the first heat exchanger 105 for heating, and the circulating water discharged from the indoor heat exchanger 207 also enters the circulating water pipeline of the first heat exchanger 105 for heating.

[0110] In some optional embodiments, the system of this embodiment may further include a second water-side proportional three-way valve 308;

[0111] like Figure 3 As shown, the second water-side proportional three-way valve 308 connects the circulating water pipeline of the first heat exchanger 105, the circulating water pipeline of the indoor heat exchanger 207 and the target system to adjust the water flow entering the circulating water pipeline of the indoor heat exchanger 207 and the water flow entering the target system.

[0112] For example, for the indoor heat exchanger 207 in the heating mode, when the user sets a higher target indoor temperature, the second water side proportional regulating valve 308 can control more high-temperature circulating water to enter the indoor heat exchanger 207, and a small amount of high-temperature circulating water to enter the buffer water tank 202; when the user sets a lower target indoor temperature, the second water side proportional regulating valve 308 can control a small amount of high-temperature circulating water to enter the indoor heat exchanger 207, and more high-temperature circulating water to enter the buffer water tank 202.

[0113] The working mode of other components in the system can be consistent with that in the cooling mode and will not be described in detail.

[0114] It should be noted that, when a device mentioned in any embodiment of the present application transfers refrigerant or water to another device, it means that the refrigerant or water flows out from one end of the corresponding pipeline of the previous device, and then flows into one end of the corresponding pipeline of the latter device through various pipelines and / or valves.

[0115] Illustratively, in the aforementioned embodiment, the third heat exchanger 103 transmits the refrigerant after heat exchange to the compressor 101, which means that after the refrigerant exchanges heat with the outdoor environment in the third heat exchanger 103, it flows out from one end of the refrigerant pipeline of the third heat exchanger 103, passes through the refrigerant side proportional three-way valve 301 and the four-way reversing valve 102, and then flows into one end of the refrigerant pipeline of the compressor 101, thereby being compressed in the compressor 101.

[0116] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0117] For the convenience of description, the above system or device is described by dividing it into various modules or units according to its functions. Of course, when implementing the present application, the functions of each unit can be implemented in the same or multiple software and / or hardware.

[0118] It can be known from the description of the above implementation methods that those skilled in the art can clearly understand that the present application can be implemented by means of software plus a necessary general hardware platform. Based on such an understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product can be stored in a storage medium such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in the various embodiments of the present application or certain parts of the embodiments.

[0119] Finally, it should be noted that, in this article, relational terms such as first, second, third and fourth are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0120] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. An air conditioner, water heater and dishwasher joint control system, characterized in that: include: Indoor heat exchanger, target system, first heat exchanger, second heat exchanger and compressor; The indoor heat exchanger is connected to the circulating water pipeline of the first heat exchanger so as to exchange heat between the circulating water output by the first heat exchanger and the indoor environment; One end of the refrigerant pipeline of the first heat exchanger is connected to the refrigerant pipeline of the second heat exchanger, and the other end is connected to the compressor, so as to exchange heat between the refrigerant output by the second heat exchanger and the circulating water output by the indoor heat exchanger, and transmit the refrigerant after heat exchange to the compressor; One end of the refrigerant pipeline of the second heat exchanger is connected to the compressor, and the other end is connected to the refrigerant pipeline of the first heat exchanger, so as to exchange heat between the refrigerant output by the compressor and the circulating water in the circulating water pipeline of the second heat exchanger; The circulating water pipeline of the second heat exchanger is connected to the target system to provide the target system with circulating water after heat exchange, and the target system at least includes a water heater and a dishwasher.

2. The system according to claim 1, characterized in that The target system also includes a first water side switch three-way valve, a first circulating water pump, a buffer water tank and a water purification module; The circulating water pipeline of the second heat exchanger is connected to the first circulating water pump through the first water-side switch three-way valve, and the first circulating water pump is used to pump the circulating water of the circulating water pipeline of the second heat exchanger into the buffer water tank; The water purification module is used to purify the water in the buffer water tank and supply the purified water to the water heater and the dishwasher.

3. The system according to claim 2, characterized in that The target system also includes a first water-side proportional three-way valve; The first water-side proportional three-way valve is connected to the dishwasher, the water heater and the water purification module to adjust the water flow entering the dishwasher and the water flow entering the water heater.

4. The system according to claim 1, characterized in that The dishwasher has a first circulation drain port, and the first circulation drain port is connected to the circulation water pipeline of the second heat exchanger; The dishwasher is used to discharge water to the circulating water pipeline of the second heat exchanger through the first circulating drain port in the first mode to exchange heat in the second heat exchanger; When the dishwasher is in the first mode, heat is exchanged between the inflowing circulating water and the air in the dishwasher chamber.

5. The system according to claim 1, characterized in that The water heater has a second circulation drain port, and the second circulation drain port is connected to the circulation water pipeline of the second heat exchanger; The water heater is used to discharge water to the circulating water pipeline of the second heat exchanger through the second circulating drain port to exchange heat in the second heat exchanger.

6. The system according to claim 1, characterized in that Also included is a third heat exchanger located in the outdoor environment; One end of the circulation pipeline of the third heat exchanger is connected to the compressor, and the other end is connected to the refrigerant pipeline of the first heat exchanger, so that the refrigerant flowing through the third heat exchanger exchanges heat with the outdoor environment.

7. The system according to claim 6, characterized in that It also includes a proportional three-way valve on the refrigerant side; The refrigerant-side proportional three-way valve connects one end of the refrigerant pipeline of the second heat exchanger, one end of the refrigerant pipeline of the third heat exchanger and the compressor to adjust the refrigerant flow entering the second heat exchanger and the refrigerant flow entering the third heat exchanger.

8. The system according to claim 6, characterized in that The first heat exchanger is also used for: exchanging heat between the refrigerant output by the compressor and the circulating water in the circulating water pipeline, and transmitting the refrigerant after the heat exchange to the third heat exchanger; The third heat exchanger is used for: The refrigerant output by the first heat exchanger exchanges heat with the outdoor environment, and the refrigerant after the heat exchange is transmitted to the compressor.

9. The system according to claim 8, characterized in that The circulating water pipeline of the first heat exchanger is also connected to the target system to provide the target system with circulating water after heat exchange.

10. The system according to claim 9, characterized in that Also included is a second water-side proportional three-way valve; The second water-side proportional three-way valve connects the circulating water pipeline of the first heat exchanger, the circulating water pipeline of the indoor heat exchanger and the target system to adjust the water flow entering the circulating water pipeline of the indoor heat exchanger and the water flow entering the target system.

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