Air conditioner heat pump water heater

Abstract

The invention relates to the technical field of air conditioners, and discloses an air conditioner heat pump water heater. The water heater comprises an indoor unit, an outdoor unit and a first drainage component. The indoor unit is communicated with the outdoor unit water path through a circulation pipeline to form a refrigeration water circulation loop; the first drainage component is located in the indoor unit. The water inlet end of the first drainage component communicates with a water pan of the indoor unit, and the water outlet end of the first drainage component communicates with the circulation pipeline and is used for draining condensate water in the water pan into the circulation pipeline. According to the indoor unit, the first drainage component communicating with the circulating pipeline is arranged and located in the indoor unit, condensate water in the water pan can be drained into the circulating pipeline, and therefore it is avoided that a drainage port communicating with the outside is independently formed in the indoor unit, and it is avoided that a drainage pipe is independently laid; the pipeline cost and the manual installation cost are saved, and the problems of indoor unit noise, insects and the like caused by intercommunication of a drainage pipe and the outside in the prior art are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and in particular to an air-conditioning heat pump water heater. Background Art

[0002] An air-conditioning heat pump water heater includes an indoor unit and an outdoor unit; when the indoor unit is refrigerating, condensed water will be generated, and the condensed water will collect in the water receiving tray of the indoor unit. Currently, a drain port is usually reserved in the indoor unit, and a condensed water drain pipe is installed at the drain port to drain the condensed water of the indoor unit. Separately setting up a drain pipe requires pre-reserving a drainage pipeline in advance, which separately increases the pipeline laying, increases the pipeline cost and the manual installation cost. In addition, the drain port is generally in an open state, which will cause air to flow back into the room, increasing the risk of noise generated by the indoor unit and increasing the risk of insects and the like crawling into the room. Therefore, how to avoid problems such as indoor unit noise and insects caused by the intercommunication between the drain pipe and the outside world is an urgent problem to be solved in the industry. Summary of the Invention

[0003] The present invention provides an air-conditioning heat pump water heater to solve problems such as indoor unit noise and insects caused by the intercommunication between the drain pipe and the outside world in the prior art.

[0004] The present invention provides an air-conditioning heat pump water heater, including: An indoor unit and an outdoor unit, the indoor unit is in water communication with the outdoor unit through a circulation pipeline to form a refrigeration water circulation loop; A first drainage component, located inside the indoor unit; the water inlet end of the first drainage component is communicated with the water receiving tray of the indoor unit, and the water outlet end of the first drainage component is communicated with the circulation pipeline, and is used for draining the condensed water in the water receiving tray into the circulation pipeline.

[0005] According to the air-conditioning heat pump water heater provided by the present invention, it further includes: A second drainage component, communicated with the circulation pipeline, the first drainage component and the second drainage component form a condensed water discharge flow path through the circulation pipeline, and the second drainage component is used for discharging the refrigerated water out of the circulation pipeline.

[0006] According to the air-conditioning heat pump water heater provided by the present invention, the first drainage component includes: A first drain pipe, the water inlet end of the first drain pipe is connected to the water receiving tray; A first drainage valve group, installed on the circulation pipeline; the water outlet end of the first drain pipe is communicated with the circulation pipeline through the first drainage valve group, and is used for draining the condensed water into the circulation pipeline; In the refrigeration condition, the first drain valve group makes the refrigeration water circulation circuit conductive and makes the condensate drainage flow path cut off; in the drainage condition, the first drain valve group makes the refrigeration water circulation circuit cut off and makes the condensate drainage flow path conductive.

[0007] According to the air-conditioning heat pump water heater provided by the present invention, the first drainage component further includes: A drain pump, installed in the first drain pipe or the circulation pipeline, for pumping the condensate water into the circulation pipeline.

[0008] According to the air-conditioning heat pump water heater provided by the present invention, the second drainage component includes: A second drain valve group, in the refrigeration condition, the second drain valve group makes the refrigeration water circulation circuit conductive and makes the condensate drainage flow path cut off; in the drainage condition, the second drain valve group makes the refrigeration water circulation circuit cut off and makes the condensate drainage flow path conductive, so as to discharge the refrigeration water from the circulation pipeline.

[0009] According to the air-conditioning heat pump water heater provided by the present invention, the second drainage component is located in the second casing of the outdoor unit; a drain port is provided on the second casing; the second drainage component further includes: A second drain pipe, installed at the drain port; the water inlet of the second drain pipe is communicated with the circulation pipeline through the second drain valve group, and is used for discharging the refrigeration water from the circulation pipeline in the drainage condition.

[0010] According to the air-conditioning heat pump water heater provided by the present invention, the first drain valve group includes a first three-way valve or two parallel first on-off valves, and / or, the second drain valve group includes a second three-way valve or two parallel second on-off valves.

[0011] According to the air-conditioning heat pump water heater provided by the present invention, it further includes: A circulation pump, located inside the indoor unit or inside the outdoor unit, and the circulation pump is arranged on the circulation pipeline.

[0012] According to the air-conditioning heat pump water heater provided by the present invention, the circulation pipeline includes a water inlet pipe and a water outlet pipe, the circulation pump is installed on the water inlet pipe, and the water outlet end of the first drainage component is communicated with the water outlet pipe.

[0013] According to the air-conditioning heat pump water heater provided by the present invention, it further includes: A buffer water tank, installed on the circulation pipeline.

[0014] According to the air-conditioning heat pump water heater provided by the present invention, it further includes: A water volume detection unit, used for detecting the actual water volume in the water receiving tray; A control unit, electrically connected to the water quantity detection unit and the first drainage component; When the actual water quantity is greater than the water quantity threshold, the control unit outputs a drainage control instruction to control the first drainage component to drain the condensed water into the circulation pipeline.

[0015] The air-conditioning heat pump water heater provided by the present invention, by setting a circulation pipeline, in the refrigeration working condition, the refrigerated water can circulate between the outdoor unit and the indoor unit through the circulation pipeline to form a refrigeration water circulation loop, so as to achieve the purpose of cooling the indoor space. By setting a first drainage component communicated with the circulation pipeline, and the first drainage component is located inside the indoor unit, the condensed water in the water receiving tray can be drained into the circulation pipeline, thereby avoiding separately opening a drainage port communicating with the outside on the indoor unit and separately laying a drainage pipe, not only saving the pipeline cost and the manual installation cost, but also solving the problems of indoor unit noise and insects caused by the intercommunication between the drainage pipe and the outside in the prior art. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 is one of the structural schematic diagrams of the air-conditioning heat pump water heater provided by the present invention.

[0018] Figure 2 is another structural schematic diagram of the air-conditioning heat pump water heater provided by the present invention.

[0019] Figure 3 is still another structural schematic diagram of the air-conditioning heat pump water heater provided by the present invention.

[0020] Reference Signs: 100, indoor unit; 110, first housing; 120, coil; 130, water receiving tray; 200, outdoor unit; 210, second housing; 220, first heat exchanger; 300, first drainage component; 310, first drainage pipe; 320, first drainage valve group; 330, drainage pump; 400, second drainage component; 410, second drainage valve group; 420, second drainage pipe; 500, circulation pump; 600, circulation pipeline; 610, water inlet pipe; 620, water outlet pipe; 700, water quantity detection unit; 810, Indoor control panel; 820, Outdoor control panel. Detailed implementation manners

[0021] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly defined and limited, the terms "connected" and "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0023] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without conflict, those skilled in the art can combine the different embodiments or examples described in this specification and the features of the different embodiments or examples.

[0024] The following combines Figures 1 to 3 to make a detailed description of the structure and working principle of the air-conditioning heat pump water heater of the present invention.

[0025] As Figures 1 to 3 shown, the present invention provides an air-conditioning heat pump water heater. The air-conditioning heat pump water heater includes an indoor unit 100, an outdoor unit 200, and a first drainage component 300; the indoor unit 100 is in water communication with the outdoor unit 200 through a circulation pipeline 600 to form a refrigeration water circulation loop; the first drainage component 300 is located inside the indoor unit 100; the water inlet end of the first drainage component 300 is communicated with the water receiving tray 130 of the indoor unit 100, and the water outlet end of the first drainage component 300 is communicated with the circulation pipeline 600, and is used to drain the condensed water in the water receiving tray 130 into the circulation pipeline 600.

[0026] In this embodiment, by providing a circulating pipeline 600, in the refrigeration mode, the chilled water can circulate between the outdoor unit 200 and the indoor unit 100 through the circulating pipeline 600 to form a chilled water circulation loop, achieving the purpose of cooling the room. By providing a first drainage component 300 communicated with the circulating pipeline 600 and the first drainage component 300 being located inside the indoor unit 100, the condensed water in the water receiving tray 130 can be drained into the circulating pipeline 600, thereby avoiding separately opening a drainage port communicating with the outside on the indoor unit 100 and avoiding separately laying a drainage pipe, not only saving the pipeline cost and the manual installation cost, but also solving the problems such as the noise of the indoor unit 100 and insects caused by the communication between the drainage pipe and the outside in the prior art.

[0027] Further, the indoor unit 100 includes a first housing 110, and a coil 120 and a water receiving tray 130 located inside the first housing 110; the water receiving tray 130 is located below the coil 120; the coil 120 is communicated with the outdoor unit 200 through the circulating pipeline 600 to form a chilled water circulation loop; in the refrigeration mode, the condensed water on the outer side surface of the coil 120 drips into the water receiving tray 130, and the condensed water accumulates in the water receiving tray 130.

[0028] Further, the outdoor unit 200 includes a second housing 210, and a first heat exchanger 220 located inside the second housing 210; the first heat exchanger 220 has a refrigerant flow channel and a water flow channel; the refrigerant flow channel is used for conveying refrigerant, and the water flow channel is used for conveying water. Among them, the refrigerant flow channel is communicated with a compressor, a second heat exchanger, an expansion valve, etc. to form a refrigerant circulation loop. The water flow channel is communicated with the coil 120 through the circulating pipeline 600 to form a chilled water circulation loop. In the refrigeration mode, the chilled water in the water circulation pipeline 600 flows into the water flow channel to exchange heat with the low-temperature refrigerant in the refrigerant flow channel, and the chilled water is cooled down; then it flows through the circulating pipeline 600 to the coil 120 to achieve cooling the room.

[0029] Further, the air-conditioning heat pump water heater further includes a circulation pump 500; the circulation pump 500 is located inside the indoor unit 100 or inside the outdoor unit 200, and the circulation pump 500 is arranged on the circulating pipeline 600 for providing circulating power for the chilled water. Specifically, when the circulation pump 500 is started, the chilled water circulates between the coil 120 of the indoor unit 100 and the first heat exchanger 220 of the outdoor unit 200 through the circulating pipeline 600 to form a chilled water circulation loop. By adding the circulation pump 500, it can ensure that the chilled water can circulate smoothly.

[0030] Specifically, the circulation pump 500 is installed inside the second housing 210 and is connected to the water inlet pipe 610 of the circulation pipeline 600. The circulation pump 500 circulates in the forward direction, and can pump the chilled water in the first heat exchanger 220 to the water inlet of the coil 120. The circulation pump 500 provides power for the circulation of the chilled water in the circulation pipeline 600.

[0031] It should be noted that, under the refrigeration condition, the chilled water with a temperature lower than the indoor ambient temperature enters the coil 120 to achieve indoor refrigeration; under the heating condition, the chilled water with a temperature higher than the indoor ambient temperature enters the coil 120 to achieve indoor heating.

[0032] Furthermore, the circulation pipeline 600 includes a water inlet pipe 610 and a water outlet pipe 620; the water inlet of the indoor unit 100 is connected to the water outlet of the outdoor unit 200 through the water inlet pipe 610, and the water outlet of the indoor unit 100 is connected to the water inlet of the outdoor unit 200 through the water outlet pipe 620. Specifically, the water inlet of the coil 120 is connected to the water outlet of the water flow channel through the water inlet pipe 610, and the water outlet of the coil 120 is connected to the water inlet of the water flow channel through the water outlet pipe 620.

[0033] Furthermore, the circulation pump 500 can be installed on the water inlet pipe 610 or on the water outlet pipe 620.

[0034] Preferably, the circulation pump 500 can be installed on the water inlet pipe 610, and the water outlet end of the first drainage component 300 is connected to the water outlet pipe 620. Under the refrigeration condition, the circulation pump 500 starts, and the first drainage component 300 cuts off the condensate drainage flow path and conducts the refrigeration water circulation loop to ensure that the refrigeration water reciprocates between the first heat exchanger 220, the water inlet pipe 610, the coil 120, and the water outlet pipe 620. Under the drainage condition, the circulation pump 500 can stop, the power source of the first drainage component 300 starts, and at the same time the first drainage component 300 conducts the condensate drainage flow path and cuts off the refrigeration water circulation loop to ensure that the condensate can smoothly flow into the circulation pipeline 600.

[0035] In some embodiments, the air-conditioning heat pump water heater further includes a buffer water tank; the buffer water tank is arranged in the circulation pipeline 600 and is used for buffering the chilled water in the circulation pipeline 600. At this time, the condensate drained into the circulation pipeline 600 by the first drainage component 300 can also be stored in the buffer water tank.

[0036] In some other embodiments, a buffer water tank may not be provided on the circulation pipeline 600. The amount of chilled water in the refrigeration water circulation loop is usually fixed. In the case where condensate is drained into the circulation pipeline 600, an equal amount of water in the circulation pipeline 600 can be drained at the same time to ensure that the amount of chilled water in the refrigeration water circulation loop is fixed.

[0037] It is understandable that the water level in the buffer water tank needs to be between the minimum water level line and the maximum water level line. When it exceeds the maximum water level line, some water needs to be drained to restore the water level to between the minimum water level line and the maximum water level line.

[0038] In some embodiments, the air-conditioning heat pump water heater further includes a second drainage component 400; the first drainage component 300 and the second drainage component 400 form a condensate drainage flow path through a circulation pipeline 600, and the second drainage component 400 is used to drain the chilled water from the circulation pipeline 600. Specifically, the second drainage component 400 is used to drain the same amount of chilled water as the condensate flowing into the circulation pipeline 600 from the circulation pipeline 600. With such a design, it can be ensured that the amount of chilled water in the chilled water circulation loop is fixed.

[0039] Furthermore, the second drainage component 400 includes a second drainage valve group 410; in the refrigeration working condition, the second drainage valve group 410 makes the chilled water circulation loop conductive and the condensate drainage flow path cut off; in the drainage working condition, the second drainage valve group 410 makes the chilled water circulation loop cut off and the condensate drainage flow path conductive, and is used to drain the condensate into the circulation pipeline 600. Avoid opening a drainage port communicating with the outside on the first housing 110, and solve the problems of indoor unit noise and insects caused by the intercommunication between the drainage pipe and the outside in the prior art.

[0040] Furthermore, the second drainage component 400 can be arranged between the indoor unit 100 and the outdoor unit 200, or can be arranged in the second housing 210 of the outdoor unit 200.

[0041] Furthermore, the second drainage component 400 is located in the second housing 210 of the outdoor unit 200; a drainage port is opened on the second housing 210; the second drainage component 400 further includes a second drainage pipe 420; the second drainage pipe 420 is installed at the drainage port; the water inlet of the second drainage pipe 420 is communicated with the circulation pipeline 600 through the second drainage valve group 410, and is used to drain the condensate from the circulation pipeline 600 in the drainage working condition.

[0042] Furthermore, the second drainage valve group 410 includes a second three-way valve or two parallel second on-off valves.

[0043] Such as Figure 1 and Figure 3As shown, exemplarily, the second drain pipe 420 is connected to the outlet pipe 620 through the second three-way valve. Specifically, the first interface of the second three-way valve is connected to the outlet of the coil 120, the second interface of the second three-way valve is connected to the water inlet of the water flow channel, and the third interface of the second three-way valve is connected to the second drain pipe 420. Under the refrigeration condition, the refrigeration water flow channel formed by the first interface and the second interface is connected, and the drainage flow channel formed by the first interface and the third interface is cut off, ensuring that the refrigeration water can circulate between the indoor unit 100 and the outdoor unit 200 to achieve indoor refrigeration. Under the drainage condition, the refrigeration water flow channel formed by the first interface and the second interface is cut off, and the drainage flow channel formed by the first interface and the third interface is connected, and the first drainage component 300 discharges the condensed water into the circulation pipeline 600 to mix with the original refrigeration water, and the mixed water is discharged from the second drain pipe 420 to ensure that the amount of refrigeration water in the refrigeration water circulation loop of the water heater is fixed.

[0044] like Figure 2 As shown, exemplarily, the second drain valve group 410 includes two second switch valves in parallel; the water inlet of the second drain pipe 420 is connected to the water outlet pipe 620, the first second switch valve is arranged on the water outlet pipe 620, and the second second switch valve is arranged on the second drain pipe 420. Under the refrigeration condition, the first second switch valve is turned on and the second second switch valve is turned off, so as to ensure the smooth circulation of the refrigeration water circulation loop, and the refrigeration water cannot be drained from the second drain pipe 420. Under the drainage condition, the first second switch valve is turned off and the second second switch valve is turned on, so that the refrigeration water circulation loop cannot circulate, and the refrigeration water can be discharged from the second drain pipe 420.

[0045] In some embodiments, the first drainage component 300 includes a first drain pipe 310 and a first drain valve group 320; the water inlet end of the first drain pipe 310 is connected to the water receiving pan 130; the first drain valve group 320 is installed in the circulation pipeline 600; the water outlet end of the first drain pipe 310 is connected to the circulation pipeline 600 through the first drain valve group 320, which is used to discharge condensed water into the circulation pipeline 600; under refrigeration conditions, the first drain valve group 320 enables the refrigeration water circulation circuit to be opened, and the condensed water discharge flow path is cut off; under drainage conditions, the first drain valve group 320 cuts off the refrigeration water circulation circuit, and enables the condensed water drainage flow path.

[0046] In this embodiment, under the refrigeration condition, the first drain valve group 320 can make the refrigeration water circulation loop conductive while blocking the condensate discharge flow path, ensuring the normal operation of the refrigeration system and avoiding the interference of condensate on the refrigeration effect. Under the drainage condition, the first drain valve group 320 switches to block the refrigeration water circulation loop while making the condensate discharge flow path conductive, ensuring that the condensate can be discharged in a timely and effective manner and avoiding damage to the system caused by water accumulation. The first drainage component 300 integrates the first drain pipe 310 and the first drain valve group 320, reducing additional connection components and installation steps, and improving the overall compactness and integration of the system. This design helps to reduce the complexity and maintenance cost of the system while improving the stability and reliability of the system.

[0047] Exemplarily, the first drain valve group 320 and the circulation pump 500 can both be installed on the outlet pipe 620. The first drain pipe 310 is used to divert the condensate in the water receiving tray 130 to the outlet pipe 620. The circulation pump 500 is located on the side of the first drain valve group 320 away from the water receiving tray 130. Under the refrigeration condition, by controlling the first drain valve group 320, the refrigeration water circulation loop is made conductive and the condensate discharge flow path is blocked. The circulation pump 500 is started, and the circulation pump 500 provides power for the circulation of the refrigeration water, ensuring that the refrigeration water can circulate between the indoor unit 100 and the outdoor unit 200. Under the drainage condition, by controlling the first drain valve group 320, the refrigeration water circulation loop is blocked and the condensate discharge flow path is made conductive. The circulation pump 500 is started, and the circulation pump 500 can pump the condensate in the water receiving tray 130 to the outlet pipe 620. Combined with the second drainage component 400, the refrigeration water equal to the condensate flowing into the outlet pipe 620 can be discharged.

[0048] Exemplarily, the first drain valve group 320 is installed on the inlet pipe 610, and the circulation pump 500 is also installed on the inlet pipe 610. The circulation pump 500 is located on the side of the first drain valve group 320 away from the water receiving tray 120. Under the refrigeration condition, by controlling the first drain valve group 320, the refrigeration water circulation loop is made conductive and the condensate discharge flow path is blocked. The circulation pump 500 is started, and the circulation pump 500 provides power for the circulation of the refrigeration water, ensuring that the refrigeration water can circulate between the indoor unit 100 and the outdoor unit 200. Under the drainage condition, by controlling the first drain valve group 320, the refrigeration water circulation loop is blocked and the condensate discharge flow path is made conductive. The circulation pump 500 is started, and the circulation pump 500 can pump the condensate in the water receiving tray 130 to the outlet pipe 620. Combined with the second drainage component 400, the refrigeration water equal to the amount flowing into the outlet pipe 620 can be discharged.

[0049] Further, the first drain valve group 320 includes a first three-way valve or two parallel first on-off valves.

[0050] Such as Figure 1As shown, by way of example, the first drain valve group 320 is a first three-way valve; the first three-way valve is installed on the water outlet pipe 620. The first interface of the first three-way valve is communicated with the water outlet of the coil 120. The second interface of the first three-way valve is communicated with the first interface of the second three-way valve. The third interface of the first three-way valve is communicated with the water receiving tray 130 through the first drain pipe 310. Under the refrigeration condition, the first interface and the second interface of the first three-way valve are communicated with each other, and the first interface and the third interface of the first three-way valve are cut off. Under the drain condition, the first interface and the second interface of the first three-way valve are cut off, and the first interface and the third interface of the first three-way valve are communicated. At this time, the circulation pump 500 can be arranged between the second interface of the first three-way valve and the first interface of the second three-way valve.

[0051] As Figure 2 shown, by way of example, the first drain valve group 320 includes two juxtaposed first on-off valves; the first first on-off valve is arranged on the water outlet pipe 620, and the second first on-off valve is arranged on the first drain pipe 310. Under the refrigeration condition, the first first on-off valve is opened, and the second first on-off valve is cut off. Under the drain condition, the first on-off valve is cut off, and the second first on-off valve is opened.

[0052] In some embodiments, the first drain component 300 further includes a drain pump 330; the drain pump 330 is installed on the first drain pipe 310 or the circulation pipeline 600 and is used for pumping the condensed water into the circulation pipeline 600. Equipping a dedicated drain pump 330 for the discharge of condensed water is convenient for control.

[0053] Specifically, both the drain pump 330 and the first drain valve group 320 are arranged on the water outlet pipe 620. The circulation pump 500 is located inside the outdoor unit 200 and is arranged on the water inlet pipe 610; the drain pump 330 is located on the side of the first drain valve group 320 away from the coil 120.

[0054] In some embodiments, the air-conditioning heat pump water heater further includes a water volume detection unit 700 and a control unit; the water volume detection unit 700 is used for detecting the actual water volume in the water receiving tray 130; the control unit is electrically connected to the water volume detection unit 700; when the actual water volume is greater than the water volume threshold, the control unit outputs a drain control instruction to control the first drain component 300 to be turned on and drain the condensed water into the circulation pipeline 600.

[0055] Specifically, when the actual water volume is greater than the water volume threshold, the control unit outputs a drain control instruction to control the first drain component 300 to be turned on and drain the condensed water into the circulation pipeline 600, including: When the actual water volume is greater than the water volume threshold, the control unit outputs a drain control instruction to control the first drain component 300 and the second drain component 400, so that the refrigeration water circulation loop is cut off and the condensed water discharge flow path is conducted.

[0056] Further, when the actual water volume is not greater than the water volume threshold, the control unit outputs a refrigeration water circulation control instruction to control the start of the circulation pump 500, so that the refrigeration water circulates between the indoor unit 100 and the outdoor unit 200.

[0057] Specifically, the water volume detection unit 700 includes a water volume detection sensor or a float switch; the water volume detection unit 700 is installed in the water receiving tray 130.

[0058] Specifically, the control unit includes an indoor control board 810 and an outdoor control board 820; the indoor control board 810 is installed in the first housing 110, and the outdoor control board 820 is installed in the second housing 210. The indoor control board 810 is electrically connected to the water volume detection unit 700 and the first drainage component 300; the outdoor control board 820 is electrically connected to the circulation pump 500 and the second drainage component 400.

[0059] When the actual water volume is greater than the water volume threshold, the indoor control board 810 controls the first drainage component 300 to drain the condensed water into the circulation pipeline 600, and the outdoor control board 820 controls the second drainage component 400 to drain the refrigeration water equal to the condensed water in the circulation pipeline 600.

[0060] Next, taking Figure 1 as an example, the structure and working process of the air-conditioning heat pump water heater will be described in detail.

[0061] The air-conditioning heat pump water heater of this embodiment includes an outdoor unit 200, an indoor unit 100, a water inlet pipe 610, a water outlet pipe 620, a circulation pump 500, a drain pump 330, a first three-way valve, a second three-way valve, a first drain pipe 310 and a second drain pipe 420; a coil 120 and a water receiving tray 130 are installed in the first housing 110 of the indoor unit 100; the water receiving tray 130 is located below the coil 120 and is used for receiving condensed water. A first heat exchanger 220 is installed in the second housing 210 of the outdoor unit 200, and the first heat exchanger 220 has a refrigerant flow channel and a water flow channel; the chilled water in the water flow channel exchanges heat with the refrigerant in the refrigerant flow channel, and the refrigerant is used to cool or heat the chilled water. The water inlet of the coil 120 is communicated with the water outlet of the water flow channel through the water inlet pipe 610, and the water outlet of the coil 120 is communicated with the water inlet of the water flow channel through the water outlet pipe 620 to form a chilled water circulation loop. The circulation pump 500 is located in the second housing 210 of the outdoor unit 200 and is installed on the water inlet pipe 610. The drain pump 330 and the first three-way valve are both located in the first housing 110 of the indoor unit 100 and are both installed on the water outlet pipe 620; the first three-way valve is also communicated with the water receiving tray 130 through the first drain pipe 310; the drain pump 330 is located on the side of the first three-way valve away from the coil 120. The second three-way valve is located in the second housing 210 of the outdoor unit 200 and is installed on the water outlet pipe 620, and the second three-way valve is also communicated with the outside through the second drain pipe 420. The first three-way valve and the second three-way valve can both be solenoid valves. A float switch is arranged in the water receiving tray 130 and is used for detecting the actual amount of condensed water in the water receiving tray 130. The control unit is electrically connected to the float switch, the first three-way valve, the second three-way valve, the circulation pump 500 and the drain pump 330.

[0062] When the actual amount of water is not greater than the water amount threshold, the control unit outputs a chilled water circulation control instruction. The indoor control board 810 controls the first interface and the second interface of the first three-way valve to be communicated, and the first interface and the third interface are cut off, and controls the drain pump 330 to stop; the outdoor control board 820 controls the first interface and the second interface of the second three-way valve to be communicated, and the first interface and the third interface are cut off, and controls the circulation pump 500 to start. At this time, the chilled water in the water flow channel sequentially flows through the circulation pump 500, the coil 120, the first interface of the first three-way valve, the second interface of the first three-way valve, the drain pump 330, the first interface of the second three-way valve, the second interface of the second three-way valve and then returns to the water flow channel to form a chilled water circulation loop.

[0063] When the actual water volume is greater than the water volume threshold, the control unit outputs a drainage control instruction. The indoor control board 810 controls the first interface and the second interface of the first three-way valve to be cut off, and the first interface and the third interface to be conducted. The indoor control board 810 controls the drainage pump 330 to start; the outdoor control board 820 controls the first interface and the second interface of the second three-way valve to be cut off, and the first interface and the third interface to be conducted, and controls the circulation pump 500 to stop; at this time, the condensed water in the water receiving tray 130 sequentially passes through the third interface of the first three-way valve, the second interface of the first three-way valve, the drainage pump 330, the water outlet pipe 620, the first interface of the second three-way valve, and the third interface of the second three-way valve and enters the second drain pipe 420 to form a condensed water discharge flow path to discharge the condensed water to the outside.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An air-conditioning heat pump water heater, characterized in that, Comprising: An indoor unit (100) and an outdoor unit (200), the indoor unit (100) is in water communication with the outdoor unit (200) through a circulation pipeline (600) to form a refrigeration water circulation loop; A first drainage component (300), located inside the indoor unit (100); the water inlet end of the first drainage component (300) is in communication with the water receiving tray (130) of the indoor unit (100), and the water outlet end of the first drainage component (300) is in communication with the circulation pipeline (600), for draining the condensed water in the water receiving tray (130) into the circulation pipeline (600).

2. The air-conditioning heat pump water heater according to claim 1, wherein It further comprises: A second drainage component (400), in communication with the circulation pipeline (600), the first drainage component (300) and the second drainage component (400) form a condensed water discharge flow path through the circulation pipeline (600), and the second drainage component (400) is used for discharging the refrigeration water from the circulation pipeline (600).

3. The air-conditioning heat pump water heater according to claim 2, wherein, The first drainage component (300) comprises: A first drainage pipe (310), the water inlet end of the first drainage pipe (310) is connected to the water receiving tray (130); A first drainage valve group (320), installed on the circulation pipeline (600); the water outlet end of the first drainage pipe (310) is in communication with the circulation pipeline (600) through the first drainage valve group (320), for draining the condensed water into the circulation pipeline (600); In the refrigeration working condition, the first drainage valve group (320) makes the refrigeration water circulation loop conduct, and makes the condensed water discharge flow path cut off; in the drainage working condition, the first drainage valve group (320) makes the refrigeration water circulation loop cut off, and makes the condensed water discharge flow path conduct.

4. The air-conditioning heat pump water heater according to claim 3, wherein The first drainage component (300) further comprises: A drainage pump (330), installed on the first drainage pipe (310) or the circulation pipeline (600), for pumping the condensed water into the circulation pipeline (600).

5. The air-conditioning heat pump water heater according to claim 3, wherein, The second drainage component (400) comprises: A second drainage valve group (410), in the refrigeration working condition, the second drainage valve group (410) makes the refrigeration water circulation loop conduct, and makes the condensed water discharge flow path cut off; in the drainage working condition, the second drainage valve group (410) makes the refrigeration water circulation loop cut off, and makes the condensed water discharge flow path conduct, so as to discharge the refrigeration water from the circulation pipeline (600).

6. The air-conditioning heat pump water heater according to claim 5, wherein The second drainage component (400) is located inside the second housing (210) of the outdoor unit (200); a drainage port is provided on the second housing (210); the second drainage component (400) further comprises: A second drainage pipe (420), installed at the drainage port; the water inlet of the second drainage pipe (420) is in communication with the circulation pipeline (600) through the second drainage valve group (410), for discharging the refrigeration water from the circulation pipeline (600) in the drainage working condition.

7. The air-conditioning heat pump water heater according to claim 5, characterized in that, The first drain valve group (320) includes a first three-way valve or two parallel first on-off valves, and / or, the second drain valve group (410) includes a second three-way valve or two parallel second on-off valves.

8. The air-conditioning heat pump water heater according to claim 1, wherein Further included are: A circulation pump (500), which is located inside the indoor unit (100) or inside the outdoor unit (200), and the circulation pump (500) is arranged on the circulation pipeline (600).

9. The air-conditioning heat pump water heater according to claim 8, characterized in that, The circulation pipeline (600) includes a water inlet pipe (610) and a water outlet pipe (620), the circulation pump (500) is installed on the water inlet pipe (610), and the water outlet end of the first drainage component (300) is communicated with the water outlet pipe (620).

10. The air-conditioning heat pump water heater according to claim 1, characterized in that, Further included are: A buffer water tank, which is installed on the circulation pipeline (600).

11. The air-conditioning heat pump water heater according to any one of claims 1 to 10, characterized in that, Further included are: A water quantity detection unit (700), which is used to detect the actual water quantity in the water receiving tray (130); A control unit, which is electrically connected to the water quantity detection unit (700) and the first drainage component (300); When the actual water quantity is greater than the water quantity threshold, the control unit outputs a drainage control instruction to control the first drainage component (300) to drain the condensed water into the circulation pipeline (600).

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