Air-conditioning water heater system

Abstract

The invention provides an air conditioner water heater system which comprises a compressor, an indoor heat exchanger, an outdoor heat exchanger, a water tank, an indoor air return channel, an indirect heat exchange device, a condensate water pipe and a living water pipe, and the indoor heat exchanger, the outdoor heat exchanger and the water tank are connected with the compressor through pipelines; wherein the indirect heat exchange device is located in the indoor air return channel, air entering the indoor air return channel is blown to the indoor heat exchanger after being subjected to heat exchange through the indirect heat exchange device, the condensate water pipe is used for conveying condensate water generated by the indoor heat exchanger to the indirect heat exchange device, and the living water pipe is used for conveying part of living water in the water tank to the indirect heat exchange device. In the refrigeration process, air can be primarily cooled when passing through the indoor air return channel, then the air passes through the indoor heat exchanger for subsequent cooling, and the refrigeration efficiency is improved. Domestic water in the water tank can be conveyed to the indirect heat exchange device through the domestic water pipe for auxiliary heat exchange, and the structure can be simplified.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioner heat exchange, and more particularly to an air conditioner water heater system. Background Art

[0002] At present, the design and use of air conditioners and water heaters are two independent processes, which require a relatively large number of devices and pipelines, not only occupying a large amount of space, but also consuming a large amount of resources. Moreover, the condensation heat generated during the heat exchange process cannot be utilized, causing environmental heat pollution and wasting energy at the same time. Summary of the Invention

[0003] The present invention provides an air conditioner water heater system to solve the problems of space occupation and resource waste caused by the independent design of existing air conditioners and water heaters.

[0004] To solve the above problems, the present invention provides an air conditioner water heater system, which includes a compressor, an indoor heat exchanger, an outdoor heat exchanger, a water tank, an indoor return air duct, an indirect heat exchange device, a condensate water pipe, and a domestic water pipe. The indoor heat exchanger, the outdoor heat exchanger, and the water tank are respectively connected to the compressor through pipelines. Among them, the indirect heat exchange device is located in the indoor return air duct, and the air entering the indoor return air duct is blown to the indoor heat exchanger after heat exchange through the indirect heat exchange device. The condensate water pipe is used to transport the condensate water generated by the indoor heat exchanger to the indirect heat exchange device, and the domestic water pipe is used to transport a part of the domestic water in the water tank to the indirect heat exchange device.

[0005] Furthermore, the air conditioner water heater system further includes a refrigerant circulation loop and a heating pipeline. The compressor is connected to the refrigerant circulation loop, and the indoor heat exchanger and the outdoor heat exchanger are both arranged in the refrigerant circulation loop. One end of the heating pipeline is communicated with the outlet of the compressor, and the other end of the heating pipeline is communicated with the refrigerant circulation loop. The water tank is in heat exchange cooperation with the heating pipeline.

[0006] Furthermore, the refrigerant circulation loop includes an indoor branch and an outdoor branch connected to each other. The indoor heat exchanger is arranged in the indoor branch, and the outdoor heat exchanger is arranged in the outdoor branch. The other end of the heating pipeline is connected to the outdoor branch.

[0007] Further, the refrigerant circulation circuit further includes an output pipe, an input pipe, and a four-way valve. The outdoor branch includes a first branch and a second branch, the indoor branch includes a third branch and a fourth branch, and the heating pipeline includes a first heating pipe and a second heating pipe. Among them, both ends of the output pipe are respectively connected to the outlet of the compressor and the four-way valve, both ends of the input pipe are respectively connected to the inlet of the compressor and the four-way valve, both ends of the first branch are respectively connected to the four-way valve and one end of the outdoor heat exchanger, both ends of the second branch are respectively connected to the other end of the outdoor heat exchanger and one end of the second heating pipe, both ends of the third branch are respectively connected to the second branch and one end of the indoor heat exchanger, both ends of the fourth branch are respectively connected to the other end of the indoor heat exchanger and the four-way valve, one end of the first heating pipe is connected to the output pipe, the other end of the first heating pipe is connected to the water tank, and the other end of the second heating pipe is connected to the water tank.

[0008] Further, the air-conditioning water heater system further includes a first solenoid valve, a second solenoid valve, a third solenoid valve, a fourth solenoid valve, a fifth solenoid valve, a first electronic expansion valve, and a second electronic expansion valve. The first solenoid valve is installed on the output pipe, the second solenoid valve is installed on the first heating pipe, the first electronic expansion valve is installed on the second heating pipe, the third solenoid valve is installed on the second branch, the second electronic expansion valve is installed on the third branch, the fourth solenoid valve is installed on the condensate pipe, and the fifth solenoid valve is installed on the domestic water pipe.

[0009] Further, the indirect heat exchange device includes a heat exchange body and a nozzle. The condensate pipe and the domestic water pipe are respectively connected to the nozzle, and the nozzle sprays the input condensate water or domestic water onto the heat exchange body.

[0010] Further, the indirect heat exchange device further includes a spraying pipe, a water pump, and a blower. The condensate pipe and the domestic water pipe are respectively connected to the spraying pipe. The nozzle and the water pump are both installed on the spraying pipe, and the blower blows air towards the heat exchange body.

[0011] Further, the air-conditioning water heater system has an indoor cooling mode and an indoor cooling and hot water production mode. In the indoor cooling mode or the indoor cooling and hot water production mode, the condensate pipe is connected.

[0012] Further, in the indoor cooling mode, when the temperature of the domestic water in the water tank is less than the first set temperature, the domestic water pipe is opened; when the temperature of the domestic water in the water tank is greater than or equal to the first set temperature, the domestic water pipe is closed.

[0013] Further, the air-conditioning water heater system has an indoor heating and hot water production mode. After the air-conditioning water heater system switches to the indoor heating and hot water production mode and operates for the first set time: when the temperature of the domestic water in the water tank is less than the second set temperature, the domestic water pipe is closed; when the temperature of the domestic water in the water tank is greater than or equal to the second set temperature, the domestic water pipe is opened.

[0014] Further, when the temperature of the domestic water in the water tank is lower than the second set temperature and lasts for the second set time, and when the indoor temperature is lower than the third set temperature, the first heating mode is carried out: more than half of the refrigerant output by the compressor is delivered to the indoor heat exchanger, and less than half of the refrigerant output by the compressor is delivered to the water tank; when the indoor temperature is greater than or equal to the third set temperature, the second heating mode is carried out: less than half of the refrigerant output by the compressor is delivered to the indoor heat exchanger, and more than half of the refrigerant output by the compressor is delivered to the water tank.

[0015] Further, after the second heating mode operates for the third set time, the temperature of the domestic water in the water tank is detected and the opening and closing of the domestic water pipe are controlled according to the detected temperature.

[0016] Further, when the air-conditioning water heater system just switches to the indoor heating and hot water heating mode, more than half of the refrigerant output by the compressor is delivered to the indoor heat exchanger, and less than half of the refrigerant output by the compressor is delivered to the water tank.

[0017] Further, the air-conditioning water heater system also has an indoor heating mode. In the indoor heating mode, the indoor air humidity is detected. When the indoor air humidity is lower than the set humidity, the air-conditioning water heater system switches to the indoor heating and hot water heating mode. When the indoor air humidity is greater than or equal to the set humidity, the air-conditioning water heater system maintains the indoor heating mode.

[0018] Further, the air-conditioning water heater system has a hot water heating mode. In the hot water heating mode, the heating pipeline is communicated with the outdoor branch, and the indoor branch is not communicated with the compressor.

[0019] Applying the technical solution of the present invention, the air-conditioning heat exchange system is combined with the water heater system. The water tank can absorb the heat of the refrigerant during the heat exchange process of the air-conditioning heat exchange system to heat the domestic water, avoiding the discharge of the condensation heat generated during the heat exchange process of the air conditioner from polluting the environment and causing environmental heat pollution. Moreover, the condensed water generated by the indoor heat exchanger can be conveyed to the indirect heat exchange device through the condensate pipe. During the refrigeration process, the air can be preliminarily cooled when passing through the indoor return air duct, and then further cooled through the indoor heat exchanger, improving the refrigeration efficiency. And the domestic water in the water tank can be conveyed to the indirect heat exchange device through the domestic water pipe for heat exchange, assisting the air-conditioning heat exchange system for heat exchange, and at the same time reducing the load of the compressor and extending the service life. Combining the air-conditioning heat exchange system with the water heater system can also reduce the number of devices and the required pipelines, making the system layout more compact and improving the system utilization rate and space utilization rate. Description of the Drawings

[0020] The accompanying drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0021] Figure 1 shows a schematic structural diagram of an air-conditioning water heater system provided by an embodiment of the present invention;

[0022] Figure 2 shows a schematic operation logic diagram of an air-conditioning water heater system provided by an embodiment of the present invention.

[0023] Among them, the above-mentioned drawings include the following reference numerals:

[0024] 10, compressor; 21, indoor heat exchanger; 22, outdoor heat exchanger; 30, water tank; 40, indirect heat exchange device; 41, heat exchange body; 42, nozzle; 43, spraying pipe; 44, water pump; 50, condensate water pipe; 60, domestic water pipe; 70, refrigerant circulation circuit; 71, indoor branch; 711, third branch; 712, fourth branch; 72, outdoor branch; 721, first branch; 722, second branch; 73, output pipe; 74, input pipe; 75, four-way valve; 80, heating pipeline; 81, first heating pipe; 82, second heating pipe; 91, first solenoid valve; 92, second solenoid valve; 93, third solenoid valve; 94, fourth solenoid valve; 95, fifth solenoid valve; 96, first electronic expansion valve; 97, second electronic expansion valve; 98, check valve. Detailed embodiments

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually illustrative only and in no way restricts the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0026] Such as Figures 1 to 2As shown in the figure, an embodiment of the present invention provides an air-conditioning water heater system, which includes a compressor 10, an indoor heat exchanger 21, an outdoor heat exchanger 22, a water tank 30, an indoor return air duct, an indirect heat exchange device 40, a condensate pipe 50, and a domestic water pipe 60. The indoor heat exchanger 21, the outdoor heat exchanger 22, and the water tank 30 are respectively connected to the compressor 10 through pipelines. Among them, the indirect heat exchange device 40 is located in the indoor return air duct. The air entering the indoor return air duct is blown to the indoor heat exchanger 21 after heat exchange through the indirect heat exchange device 40. The condensate pipe 50 is used to transport the condensate generated by the indoor heat exchanger 21 to the indirect heat exchange device 40, and the domestic water pipe 60 is used to transport a part of the domestic water in the water tank 30 to the indirect heat exchange device 40.

[0027] In this embodiment, the air-conditioning heat exchange system is combined with the water heater system. The water tank 30 can absorb the heat of the refrigerant during the heat exchange process of the air-conditioning heat exchange system to heat the domestic water, avoiding the pollution of the environment caused by the discharge of the condensation heat generated during the heat exchange process of the air conditioner and environmental heat pollution. Moreover, the condensate generated by the indoor heat exchanger 21 can be transported to the indirect heat exchange device 40 through the condensate pipe 50. During the refrigeration process, the air can be preliminarily cooled when passing through the indoor return air duct, and then further cooled through the indoor heat exchanger 21, improving the refrigeration efficiency. And, the domestic water in the water tank 30 can be transported to the indirect heat exchange device through the domestic water pipe 60 for heat exchange, assisting the air-conditioning heat exchange system for heat exchange, and at the same time reducing the load of the compressor 10 and extending the service life. Combining the air-conditioning heat exchange system with the water heater system can also reduce the number of devices and the required pipelines, making the system layout more compact and improving the system utilization rate and space utilization rate.

[0028] As Figure 1 shown in the figure, the air-conditioning water heater system further includes a refrigerant circulation loop 70 and a heating pipeline 80. The compressor 10 is connected to the refrigerant circulation loop 70, and the indoor heat exchanger 21 and the outdoor heat exchanger 22 are both arranged in the refrigerant circulation loop 70. One end of the heating pipeline 80 is communicated with the outlet of the compressor 10, the other end of the heating pipeline 80 is communicated with the refrigerant circulation loop 70, and the water tank 30 is in heat exchange cooperation with the heating pipeline 80.

[0029] In this embodiment, it not only supports the basic cooling and heating functions of the air conditioner, but also can use the high-temperature refrigerant output by the compressor 10 to heat the domestic water in the water tank 30 through the connection between the heating pipeline 80 and the refrigerant circulation loop 70. In this way, the heat dissipated by the high-temperature refrigerant output by the compressor 10 through the heat exchanger in the original air-conditioning heat exchange system can be used for heating the domestic water, reducing the external environmental heat pollution, realizing waste heat recovery, and making full use of the energy of the high-temperature refrigerant.

[0030] As Figure 1As shown, the refrigerant circulation circuit 70 includes an indoor branch 71 and an outdoor branch 72 that are connected to each other. The indoor heat exchanger 21 is disposed in the indoor branch 71, and the outdoor heat exchanger 22 is disposed in the outdoor branch 72. The other end of the heating pipeline 80 is connected to the outdoor branch 72. By subdividing the refrigerant circulation circuit 70 into the indoor branch 71 and the outdoor branch 72 in this way, it is possible to facilitate the flow direction and heat exchange of the refrigerant indoors or outdoors under different working conditions.

[0031] As Figure 1 shown, the refrigerant circulation circuit 70 further includes an output pipe 73, an input pipe 74, and a four-way valve 75. The outdoor branch 72 includes a first branch 721 and a second branch 722. The indoor branch 71 includes a third branch 711 and a fourth branch 712. The heating pipeline 80 includes a first heating pipe 81 and a second heating pipe 82. Among them, both ends of the output pipe 73 are respectively connected to the outlet of the compressor 10 and the four-way valve 75. Both ends of the input pipe 74 are respectively connected to the inlet of the compressor 10 and the four-way valve 75. Both ends of the first branch 721 are respectively connected to the four-way valve 75 and one end of the outdoor heat exchanger 22. Both ends of the second branch 722 are respectively connected to the other end of the outdoor heat exchanger 22 and one end of the second heating pipe 82. Both ends of the third branch 711 are respectively connected to the second branch 722 and one end of the indoor heat exchanger 21. Both ends of the fourth branch 712 are respectively connected to the other end of the indoor heat exchanger 21 and the four-way valve 75. One end of the first heating pipe 81 is connected to the output pipe 73, and the other end of the first heating pipe 81 is connected to the water tank 30. The other end of the second heating pipe 82 is connected to the water tank 30.

[0032] In this embodiment, through the above settings, the refrigerant output from the compressor 10 can enter the first branch 721 or the fourth branch 712 through the output pipe 73 and the four-way valve 75 to perform corresponding heat exchange operations such as refrigeration or heating. The refrigerant that has undergone heat exchange can flow back to the compressor 10 through the input pipe 74 for the cyclic flow of the refrigerant. There is a heat exchange pipe disposed in the water tank 30. One end of the first heating pipe 81 is connected to the output pipe 73, and the other end of the first heating pipe 81 is connected to the inlet of the heat exchange pipe in the water tank 30, so that the high-temperature refrigerant output from the compressor 10 can flow into the water tank 30 through the first heating pipe 81 to exchange heat with the domestic water in the water tank 30. One end of the second heating pipe 82 is connected to the second branch 722, and the other end of the second heating pipe 82 is connected to the outlet of the heat exchange pipe in the water tank 30, which can enable the refrigerant that has undergone heat exchange in the water tank 30 to flow back to the compressor 10 through the second heating pipe 82 and the second branch 722 to realize the cyclic flow of the refrigerant.

[0033] As Figure 1As shown in the figure, the air-conditioning water heater system further includes a first solenoid valve 91, a second solenoid valve 92, a third solenoid valve 93, a fourth solenoid valve 94, a fifth solenoid valve 95, a first electronic expansion valve 96 and a second electronic expansion valve 97; the first solenoid valve 91 is installed on the output pipe 73, the second solenoid valve 92 is installed on the first heating pipe 81, the first electronic expansion valve 96 is installed on the second heating pipe 82, the third solenoid valve 93 is installed on the second branch 722, the second electronic expansion valve 97 is installed on the third branch 711, the fourth solenoid valve 94 is installed on the condensate pipe 50, and the fifth solenoid valve 95 is installed on the domestic water pipe 60.

[0034] In this embodiment, by arranging solenoid valves on different branches, the corresponding branches can be controlled to open according to the user's selected mode during the operation of the system, and other branches are in a disconnected state. The first electronic expansion valve 96 and the second electronic expansion valve 97 can control the refrigerant flow rate by controlling their own opening degrees, avoiding waste of resources. Through the combination of these components and branches, the control of any path opening / closing, fine adjustment of the refrigerant flow state, etc. can be achieved.

[0035] As Figure 1 shown, the indirect heat exchange device 40 includes a heat exchange body 41 and a spray head 42. The condensate pipe 50 and the domestic water pipe 60 are respectively communicated with the spray head 42, and the spray head 42 sprays the input condensate water or domestic water onto the heat exchange body 41. The heat exchange body 41 is a block with a water receiving tank, and the spray head 42 sprays the water conveyed by the condensate pipe 50 and the domestic water pipe 60 onto the heat exchange body for heat exchange.

[0036] As Figure 1 shown, the indirect heat exchange device 40 further includes a spray pipe 43, a water pump 44 and a blower. The condensate pipe 50 and the domestic water pipe 60 are respectively communicated with the spray pipe 43. The spray head 42 and the water pump 44 are both installed on the spray pipe 43, and the blower blows air towards the heat exchange body 41. The condensate water generated by the indoor heat exchanger 21 and the domestic water in the water tank 30 enter the spray pipe 43 under the action of the water pump 44, and are sprayed onto the heat exchange body 41 through the spray head 42. Then, the blower blows air towards the heat exchange body 41 to evaporate the water in the heat exchange body 41, realizing auxiliary heat exchange for the indoor environment.

[0037] As Figure 2 shown, the air-conditioning water heater system has an indoor cooling mode and an indoor cooling and hot water production mode. In the indoor cooling mode or the indoor cooling and hot water production mode, the condensate pipe 50 is communicated. In the indoor cooling mode and the indoor cooling and hot water production mode, the fourth solenoid valve 94 is opened, so that the condensate pipe 50 is communicated with the spray pipe 43, and the condensate water is introduced into the indirect heat exchange device 40 for secondary utilization, so that the condensate water is not wasted, and the running time of the compressor 10 can be reduced, and the energy consumption can be reduced.

[0038] AsFigures 1 to 2 As shown, in the indoor cooling mode, when the temperature of the domestic water in the water tank 30 is lower than the first set temperature, the domestic water pipe 60 is opened; when the temperature of the domestic water in the water tank 30 is greater than or equal to the first set temperature, the domestic water pipe 60 is closed.

[0039] In this embodiment, a temperature sensor is provided in the water tank 30. When it is detected in the cooling mode that the temperature in the water tank 30 is lower than the first set temperature, the system will open the fifth solenoid valve 95, so that the domestic water pipe 60 is communicated with the spraying pipe 43, and the domestic water in the water tank 30 is introduced into the indirect heat exchange device 40 for refrigeration and auxiliary heat exchange, which can reduce the running time of the compressor 10 and reduce energy consumption. When it is detected that the temperature in the water tank 30 is greater than the first set temperature, at this time the water temperature is too high to be used for auxiliary cooling, and the system closes the fifth solenoid valve 95 to disconnect the domestic water pipe 60 from the spraying pipe 43.

[0040] As Figures 1 to 2 shown, the air-conditioning water heater system has an indoor heating and domestic hot water mode. After the air-conditioning water heater system is switched to the indoor heating and domestic hot water mode and runs for the first set time: when the temperature of the domestic water in the water tank 30 is lower than the second set temperature, the domestic water pipe 60 is closed; when the temperature of the domestic water in the water tank 30 is greater than or equal to the second set temperature, the domestic water pipe 60 is opened.

[0041] In this embodiment, in the indoor heating and domestic hot water mode, the first solenoid valve 91, the second solenoid valve 92, and the third solenoid valve 93 are opened to realize heating of the indoor environment and heating of the domestic water in the water tank 30. After running for a period of time in this case, the temperature sensor in the water tank 30 starts to detect. When it is detected that the temperature of the domestic water is greater than the second set temperature, the fifth solenoid valve 95 is opened to communicate the domestic water pipe 60 with the spraying pipe 43, and the domestic water in the water tank 30 is introduced into the indirect heat exchange device 40 for auxiliary heating and indoor humidification. When it is detected that the temperature of the domestic water is lower than the second set temperature, at this time the water temperature is too low to be used for auxiliary heating, and the system closes the fifth solenoid valve 95 to disconnect the domestic water pipe 60 from the spraying pipe 43.

[0042] As Figures 1 to 2As shown, when the temperature of the domestic water in the water tank 30 is less than the second set temperature and lasts for the second set time, and when the indoor temperature is less than the third set temperature, the first heating mode is carried out: more than half of the refrigerant output by the compressor 10 is conveyed to the indoor heat exchanger 21, and less than half of the refrigerant output by the compressor 10 is conveyed to the water tank 30; when the indoor temperature is greater than or equal to the third set temperature, the second heating mode is carried out: less than half of the refrigerant output by the compressor 10 is conveyed to the indoor heat exchanger 21, and more than half of the refrigerant output by the compressor 10 is conveyed to the water tank 30.

[0043] In this embodiment, when the temperature of the domestic water in the water tank 30 is less than the second set temperature and lasts for the second set time, the indoor temperature is compared with the third set temperature. When the indoor temperature is less than the third set temperature, the second electronic expansion valve 97 is fully opened, and the first electronic expansion valve 96 is in a throttling state. More than half of the refrigerant output by the compressor 10 is conveyed to the indoor heat exchanger 21, and less than half of the refrigerant output by the compressor 10 is conveyed to the water tank 30 to achieve rapid heating of the room; when the indoor temperature is greater than or equal to the third set temperature, at this time the room temperature has reached the predetermined temperature and continuous heating is not required. The first electronic expansion valve 96 is fully opened, and the second electronic expansion valve 97 is in a throttling state. Less than half of the refrigerant output by the compressor 10 is conveyed to the indoor heat exchanger 21, and more than half of the refrigerant output by the compressor 10 is conveyed to the water tank 30 to achieve rapid heating of the domestic water in the water tank 30.

[0044] As Figures 1 to 2 shown, after the second heating mode runs for the third set time, the temperature of the domestic water in the water tank 30 is detected and the opening and closing of the domestic water pipe 60 are controlled according to the detected temperature. When the temperature of the domestic water is greater than the second set temperature, the fifth solenoid valve 95 is opened, the domestic water pipe 60 is communicated with the spraying pipe 43, and the domestic water in the water tank 30 is introduced into the indirect heat exchange device 40 for auxiliary heating and indoor humidification. If the temperature of the domestic water is less than the second set temperature, the current operating state is continued.

[0045] As Figures 1 to 2 shown, when the air-conditioning water heater system just switches to the indoor heating and hot water heating mode, more than half of the refrigerant output by the compressor 10 is conveyed to the indoor heat exchanger 21, and less than half of the refrigerant output by the compressor 10 is conveyed to the water tank 30.

[0046] In the indoor heating and hot water heating mode, the system can intelligently control the opening and closing of different valves according to the changes of the water temperature, indoor temperature and duration, and can also intelligently adjust the distribution of the refrigerant to ensure that the heating and hot water heating requirements are balanced.

[0047] In this embodiment, when the air conditioner water heater system just switches to the indoor heating and hot water heating mode, the indoor temperature is lower than the third set temperature. The second electronic expansion valve 97 is fully open, and the first electronic expansion valve 96 is in a throttling state. More than half of the refrigerant output by the compressor 10 is delivered to the indoor heat exchanger 21, and less than half of the refrigerant output by the compressor 10 is delivered to the water tank 30, achieving a rapid increase in the indoor temperature.

[0048] As Figures 1 to 2 shown, the air conditioner water heater system also has an indoor heating mode. In the indoor heating mode, the indoor air humidity is detected. When the indoor air humidity is lower than the set humidity, the air conditioner water heater system switches to the indoor heating and hot water heating mode. When the indoor air humidity is greater than or equal to the set humidity, the air conditioner water heater system maintains the indoor heating mode. By detecting the indoor air humidity and making corresponding adjustments, the system can automatically switch modes according to the actual situation of the air humidity, ensuring that the indoor humidity level is within a comfortable range and improving the user experience.

[0049] As Figures 1 to 2 shown, the air conditioner water heater system has a hot water heating mode. In the hot water heating mode, the heating pipeline 80 is connected to the outdoor branch 72, and the indoor branch 71 is not connected to the compressor 10. At this time, the second solenoid valve 92, the third solenoid valve 93, and the first electronic expansion valve 96 are opened, and the high-temperature refrigerant output by the compressor 10 is delivered to the water tank 30 to heat the domestic water, and finally returns to the compressor 10 through the outdoor branch 72, realizing the circulation of the refrigerant and the efficient operation of the system.

[0050] The above are only optional embodiments of this solution and are not used to limit this solution. For those skilled in the art, this solution can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this solution shall be included in the protection scope of this solution.

[0051] It should be noted that the terms used here are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0052] Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present solution. At the same time, it should be understood that, for the sake of convenience in description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the description. In all the examples shown and discussed here, any specific values should be construed as merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0053] In the description of the present solution, it should be understood that the orientation or positional relationships indicated by orientation terms such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom", etc., are generally based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present solution and simplifying the description. Without contrary statements, these orientation terms do not indicate and imply that the devices or elements referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of the present solution; the orientation terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0054] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "above-mentioned", etc., can be used here to describe the spatial positional relationships between a device or feature shown in the drawings and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the drawings for the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

[0055] In addition, it should be noted that the use of words such as "first", "second", etc. to limit components is only for the convenience of differentiating the corresponding components. Without additional statements, the above words have no special meanings, and thus should not be construed as limiting the scope of protection of the present solution.

Claims

1. An air-conditioning water heater system, characterized in that, It includes a compressor (10), an indoor heat exchanger (21), an outdoor heat exchanger (22), a water tank (30), an indoor return air duct, an indirect heat exchange device (40), a condensate pipe (50) and a domestic water pipe (60). The indoor heat exchanger (21), the outdoor heat exchanger (22) and the water tank (30) are respectively connected to the compressor (10) through pipelines. Among them, the indirect heat exchange device (40) is located in the indoor return air duct, and the air entering the indoor return air duct is blown to the indoor heat exchanger (21) after heat exchange through the indirect heat exchange device (40). The condensate pipe (50) is used to transport the condensate generated by the indoor heat exchanger (21) to the indirect heat exchange device (40), and the domestic water pipe (60) is used to transport a part of the domestic water in the water tank (30) to the indirect heat exchange device (40).

2. The air-conditioning water heater system according to claim 1, wherein The air-conditioning water heater system further includes a refrigerant circulation circuit (70) and a heating pipeline (80). The compressor (10) is connected to the refrigerant circulation circuit (70). The indoor heat exchanger (21) and the outdoor heat exchanger (22) are both arranged in the refrigerant circulation circuit (70). One end of the heating pipeline (80) is communicated with the outlet of the compressor (10), the other end of the heating pipeline (80) is communicated with the refrigerant circulation circuit (70), and the water tank (30) is in heat exchange cooperation with the heating pipeline (80).

3. The air-conditioning water heater system according to claim 2, characterized in that, The refrigerant circulation circuit (70) includes an indoor branch (71) and an outdoor branch (72) which are connected to each other. The indoor heat exchanger (21) is arranged in the indoor branch (71), the outdoor heat exchanger (22) is arranged in the outdoor branch (72), and the other end of the heating pipeline (80) is connected to the outdoor branch (72).

4. The air-conditioning water heater system according to claim 3, characterized in that The refrigerant circulation circuit (70) further includes an output pipe (73), an input pipe (74), and a four-way valve (75). The outdoor branch (72) includes a first branch (721) and a second branch (722). The indoor branch (71) includes a third branch (711) and a fourth branch (712). The heating pipeline (80) includes a first heating pipe (81) and a second heating pipe (82). Among them, the two ends of the output pipe (73) are respectively connected to the outlet of the compressor (10) and the four-way valve (75). The two ends of the input pipe (74) are respectively connected to the inlet of the compressor (10) and the four-way valve (75). The two ends of the first branch (721) are respectively connected to the four-way valve (75) and one end of the outdoor heat exchanger (22). The two ends of the second branch (722) are respectively connected to the other end of the outdoor heat exchanger (22) and one end of the second heating pipe (82). The two ends of the third branch (711) are respectively connected to the second branch (722) and one end of the indoor heat exchanger (21). The two ends of the fourth branch (712) are respectively connected to the other end of the indoor heat exchanger (21) and the four-way valve (75). One end of the first heating pipe (81) is connected to the output pipe (73), and the other end of the first heating pipe (81) is connected to the water tank (30). The other end of the second heating pipe (82) is connected to the water tank (30).

5. The air-conditioning water heater system according to claim 4, wherein, The air-conditioning water heater system further includes a first solenoid valve (91), a second solenoid valve (92), a third solenoid valve (93), a fourth solenoid valve (94), a fifth solenoid valve (95), a first electronic expansion valve (96), and a second electronic expansion valve (97). The first solenoid valve (91) is installed on the output pipe (73). The second solenoid valve (92) is installed on the first heating pipe (81). The first electronic expansion valve (96) is installed on the second heating pipe (82). The third solenoid valve (93) is installed on the second branch (722). The second electronic expansion valve (97) is installed on the third branch (711). The fourth solenoid valve (94) is installed on the condensate pipe (50). The fifth solenoid valve (95) is installed on the domestic water pipe (60).

6. The air-conditioning water heater system according to claim 1, characterized in that The indirect heat exchange device (40) includes a heat exchange body (41) and a spray head (42). The condensate pipe (50) and the domestic water pipe (60) are respectively connected to the spray head (42). The spray head (42) sprays the input condensate water or domestic water onto the heat exchange body (41).

7. The air-conditioning water heater system according to claim 6, wherein, The indirect heat exchange device (40) further includes a spray pipe (43), a water pump (44), and a blower. The condensate pipe (50) and the domestic water pipe (60) are respectively connected to the spray pipe (43). The spray head (42) and the water pump (44) are both installed on the spray pipe (43). The blower blows air towards the heat exchange body (41).

8. The air-conditioning water heater system according to claim 1, wherein The air-conditioning water heater system has an indoor cooling mode and an indoor cooling and hot water heating mode. In the indoor cooling mode or the indoor cooling and hot water heating mode, the condensate water pipe (50) is connected.

9. The air-conditioning water heater system according to claim 8, characterized in that, In the indoor cooling mode, when the temperature of the domestic water in the water tank (30) is less than the first set temperature, the domestic water pipe (60) is opened; when the temperature of the domestic water in the water tank (30) is greater than or equal to the first set temperature, the domestic water pipe (60) is closed.

10. The air-conditioning water heater system according to claim 1, wherein The air-conditioning water heater system has an indoor heating and hot water heating mode. After the air-conditioning water heater system switches to the indoor heating and hot water heating mode and operates for the first set time: when the temperature of the domestic water in the water tank (30) is less than the second set temperature, the domestic water pipe (60) is closed; when the temperature of the domestic water in the water tank (30) is greater than or equal to the second set temperature, the domestic water pipe (60) is opened.

11. The air-conditioning water heater system according to claim 10, wherein, When the temperature of the domestic water in the water tank (30) is less than the second set temperature and lasts for the second set time, When the indoor temperature is less than the third set temperature, the first heating mode is carried out: more than half of the refrigerant output by the compressor (10) is delivered to the indoor heat exchanger (21), and less than half of the refrigerant output by the compressor (10) is delivered to the water tank (30); When the indoor temperature is greater than or equal to the third set temperature, the second heating mode is carried out: less than half of the refrigerant output by the compressor (10) is delivered to the indoor heat exchanger (21), and more than half of the refrigerant output by the compressor (10) is delivered to the water tank (30).

12. The air-conditioning water heater system according to claim 11, characterized in that, After the second heating mode operates for the third set time, the temperature of the domestic water in the water tank (30) is detected and the opening and closing of the domestic water pipe (60) are controlled according to the detected temperature.

13. The air-conditioning water heater system according to claim 10, wherein, When the air-conditioning water heater system just switches to the indoor heating and hot water heating mode, more than half of the refrigerant output by the compressor (10) is delivered to the indoor heat exchanger (21), and less than half of the refrigerant output by the compressor (10) is delivered to the water tank (30).

14. The air-conditioning water heater system according to claim 10, wherein The air-conditioning water heater system also has an indoor heating mode. In the indoor heating mode, the indoor air humidity is detected. When the indoor air humidity is less than the set humidity, the air-conditioning water heater system switches to the indoor heating and hot water heating mode. When the indoor air humidity is greater than or equal to the set humidity, the air-conditioning water heater system maintains the indoor heating mode.

15. The air-conditioning water heater system according to claim 3, wherein The air-conditioning water heater system has a hot water heating mode. In the hot water heating mode, the heating pipeline (80) and the outdoor branch (72) are connected, and the indoor branch (71) and the compressor (10) are not connected.

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