Heat pump split inner machine and air source heat pump unit

Abstract

The utility model provides a heat pump split inner machine and an air source heat pump unit, and relates to the technical field of energy heat pumps. The heat pump split inner machine comprises a shell, a buffer water tank, a heat exchanger, a first water pump, a second water pump and a water outlet pipeline. The buffer water tank, the heat exchanger, the first water pump and the second water pump are all arranged in the shell and sequentially connected end to end to form a heating loop, the first water pump is arranged in the heating loop, the water outlet pipeline is connected with the buffer water tank, and the second water pump is arranged on the water outlet pipeline. The buffer water tank, the heat exchanger, the first water pump, the second water pump and the water outlet pipeline are arranged in the shell of the heat pump split inner machine, so that the phenomenon that water in the buffer water tank and the pipeline is frozen can be avoided, and the use time of the two water pumps on respective modules is saved. Therefore, the air source heat pump unit is simple in structure, reasonable in internal design, convenient to install and capable of effectively saving energy consumption.

Description

Technical Field

[0001] The utility model relates to the technical field of energy - saving heat pumps, and more specifically, to a split - type indoor unit of a heat pump and an air - source heat pump unit. Background Art

[0002] Existing air - source heat pump products mostly adopt integral or split - type units. Among them, integral air - source heat pump products mostly adopt a primary system for the water - circuit part, and split - type air - source heat pump units also mostly adopt a primary system or a simple secondary system.

[0003] Currently, in winter, the integral unit on the outdoor side has the risk of being frozen after power failure, and usually its internal structure is complex, which not only fails to achieve an energy - saving effect but also is inconvenient for assembly. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a split - type indoor unit of a heat pump and an air - source heat pump unit, which has a simple structure, a reasonable internal design, is convenient for installation, and can effectively save energy consumption.

[0005] The embodiments of the utility model are implemented as follows:

[0006] In a first aspect, the utility model provides a split - type indoor unit of a heat pump, including a housing, a buffer water tank, a heat exchanger, a first water pump, a second water pump, and a water outlet pipeline;

[0007] The buffer water tank, the heat exchanger, the first water pump, and the second water pump are all arranged in the housing. The buffer water tank, the heat exchanger, and the first water pump are sequentially connected and connected end - to - end to form a heating circuit. The first water pump is arranged in the heating circuit. The water outlet pipeline is connected to the buffer water tank, and the second water pump is arranged in the water outlet pipeline.

[0008] In an alternative embodiment, the heating circuit includes a first pipeline and a second pipeline. The buffer water tank, the first pipeline, the heat exchanger, and the second pipeline are sequentially connected and connected end - to - end. The first water pump is arranged in the second pipeline, and the first water pump is used to pump the water source after heat exchange with the heat exchanger through the second pipeline to the buffer water tank.

[0009] In an alternative embodiment, the split - type indoor unit of the heat pump further includes a water flow switch, and the water flow switch is arranged in the first pipeline.

[0010] In an alternative embodiment, the heat exchanger is provided with a first heat - exchange pipeline and a second heat - exchange pipeline. The first heat - exchange pipeline is used to convey a heat - exchange medium to the heat exchanger, and the second heat - exchange pipeline is used to output the heat - exchange medium.

[0011] In an alternative embodiment, the indoor unit of the heat pump also includes an expansion tank and a third pipeline. The third pipeline is connected to the water outlet pipeline, and the expansion tank is arranged on the third pipeline.

[0012] In an alternative embodiment, the buffer water tank is also provided with a sewage pipeline. One end of the sewage pipeline is connected to the bottom wall of the buffer water tank, and the other end is arranged outside the housing.

[0013] In an alternative embodiment, the buffer water tank is also provided with a water inlet pipeline. One end of the water inlet pipeline is connected to the top wall of the buffer water tank, and the other end is arranged outside the housing.

[0014] In an alternative embodiment, the buffer water tank is also provided with an exhaust pipeline. One end of the exhaust pipeline is connected to the top wall of the buffer water tank, and the other end is arranged outside the housing.

[0015] In an alternative embodiment, the housing is provided with a connected first chamber and a second chamber. The buffer water tank is arranged in the first chamber, and the heat exchanger, the first water pump, the second water pump, and the water outlet pipeline are all arranged in the second chamber.

[0016] In a second aspect, the present invention provides an air source heat pump unit, including an outdoor unit and the indoor unit of the heat pump according to any one of the foregoing embodiments. The outdoor unit and the indoor unit of the heat pump are connected by pipelines.

[0017] The beneficial effects of the indoor unit of the heat pump and the air source heat pump unit provided by the embodiments of the present invention include: arranging the buffer water tank, the heat exchanger, the first water pump, the second water pump, and the water outlet pipeline in the housing of the indoor unit of the heat pump, so as to install the water circuit system components of the air source heat pump unit indoors, which can avoid the water in the buffer water tank and the pipeline from freezing, thereby avoiding damage to the water circuit components. In addition, this solution adopts a secondary water circuit system, that is, uses the first water pump and the second water pump with smaller power. When the outdoor unit is turned on, the first water pump is started to exchange heat through the heat exchanger, so as to heat the water temperature in the buffer water tank to a preset temperature. The water outlet pipeline is usually used to connect to the user end to provide heat source for the user end. Therefore, when there is a use requirement at the user end, the second water pump can be turned on to transport the heated water source in the buffer water tank to the heat exchanger at the user end, so that the heating time at the user end can be effectively saved, and the time of the two water pumps used in their respective modules can be greatly saved, thereby achieving the purpose of saving energy consumption. It can be seen that the air source heat pump unit provided by the present invention has a simple structure, reasonable internal design, convenient installation, and can effectively save energy consumption. Description of the Drawings

[0018] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the accompanying drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following accompanying drawings only show certain embodiments of the present utility model and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant accompanying drawings can also be obtained based on these drawings.

[0019] Figure 1 Schematic diagram of the structure of the indoor unit of a split heat pump provided by an embodiment of the present utility model;

[0020] Figure 2 Schematic diagram of the internal structure of the indoor unit of a split heat pump provided by an embodiment of the present utility model from the first perspective;

[0021] Figure 3 Schematic diagram of the internal structure of the indoor unit of a split heat pump provided by an embodiment of the present utility model from the second perspective;

[0022] Figure 4 Schematic diagram of the flow principle of the indoor unit of a split heat pump provided by an embodiment of the present utility model.

[0023] Icons: 10 - Indoor unit of split heat pump; 100 - Housing; 110 - First chamber; 120 - Second chamber; 200 - Buffer water tank; 210 - Drainage pipeline; 220 - Water inlet pipeline; 230 - Exhaust pipeline; 300 - Heat exchanger; 310 - First heat exchange pipeline; 320 - Second heat exchange pipeline; 400 - First water pump; 500 - Second water pump; 600 - Water outlet pipeline; 700 - Heating circuit; 710 - First pipeline; 720 - Second pipeline; 800 - Water flow switch; 900 - Expansion tank; 1000 - Third pipeline. Detailed implementation manners

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and shown in the accompanying drawings here can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model to be protected, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0026] It should be noted that like reference numerals and letters refer to like items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship in which the product of the present utility model is customarily placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be construed as indicating or implying relative importance.

[0028] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0029] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0030] The current air source heat pump devices on the market are mainly divided into two configurations: integral type and split type. The water circuit systems of integral type devices generally adopt single-cycle (primary system) design, while split type devices are commonly found in single-cycle or simple double-cycle (secondary system) configurations.

[0031] However, existing integral type devices have the risk of being damaged by freezing after power failure in winter environments, and their internal structures are often too complex, not only failing to achieve the goal of energy conservation and emission reduction, but also bringing inconvenience during installation.

[0032] Based on the above problems, the present utility model provides an air source heat pump unit, including an outdoor unit and an indoor heat pump unit. The outdoor unit and the indoor heat pump unit 10 are connected through pipelines.

[0033] Specifically, please refer to Figures 1 to 4, the in - body unit 10 of the heat pump includes a housing 100, a buffer water tank 200, a heat exchanger 300, a first water pump 400, a second water pump 500, and a water outlet pipeline 600.

[0034] Among them, the buffer water tank 200, the heat exchanger 300, the first water pump 400, and the second water pump 500 are all arranged inside the housing 100. The buffer water tank 200, the heat exchanger 300, and the first water pump 400 are connected in sequence and end - to - end to form a heating circuit 700. The first water pump 400 is arranged in the heating circuit 700. The water outlet pipeline 600 is connected to the buffer water tank 200, and the second water pump 500 is arranged in the water outlet pipeline 600.

[0035] In this embodiment, since the indoor temperature is usually higher than the outdoor temperature and usually higher than 0 °C, the buffer water tank 200, the heat exchanger 300, the first water pump 400, the second water pump 500, and the water outlet pipeline 600 are arranged inside the housing 100 of the in - body unit 10 of the heat pump. Installing the water - circuit system components of the air - source heat - pump unit indoors can prevent the water in the buffer water tank 200 and the pipeline from freezing, thus avoiding damage to the water - circuit components.

[0036] In addition, in a conventional primary water - circuit system, usually a water pump with a relatively large power is selected to meet the requirements of water flow and head in actual use. When there is a demand at the indoor terminal or the main unit, the water pump has to run constantly, so the energy consumption of the water pump will increase greatly. However, this solution adopts a secondary water - circuit system, that is, the first water pump 400 and the second water pump 500 with relatively small power are used. When the outdoor unit is turned on, the first water pump 400 is started to exchange heat through the heat exchanger 300, thereby heating the water temperature in the buffer water tank 200 to a preset temperature.

[0037] However, since the water outlet pipeline 600 is usually connected to the user end. For example, the water outlet pipeline 600 can be connected to a floor heating system, radiators, or fan coils, etc., to provide a hot - water source for them. Therefore, when there is a demand at the user end, the second water pump 500 can be turned on to transport the heated water source in the buffer water tank 200 to the heat exchanger 300 at the user end for further heat exchange, which can effectively save the heating time at the user end.

[0038] Therefore, the small-power first water pump 400 is adopted to meet the requirements of the outdoor unit, and the small-power second water pump 500 can meet the requirements of the user side, so that when in use, one water pump focuses on meeting the flow demand on the side of the heat exchanger 300, and the other water pump focuses on meeting the head demand at the end; in this case, the power of the two water pumps is less than the power of a large-power water pump, and since the heat exchanger 300 and the end use their respective water pumps more reasonably than the existing water pumps in terms of time, the overall energy consumption during use can be reduced, achieving a more energy-saving effect, that is, greatly saving the time of the two water pumps in their respective modules, thus achieving the purpose of saving energy consumption.

[0039] It can be seen from this that the air source heat pump unit provided by the present utility model has a simple structure, a reasonable internal design, is convenient for installation, and can effectively save energy consumption.

[0040] Furthermore, the heating circuit 700 includes a first pipeline 710 and a second pipeline 720. The buffer water tank 200, the first pipeline 710, the heat exchanger 300, and the second pipeline 720 are connected in sequence and end to end. The first water pump 400 is arranged on the second pipeline 720, and the first water pump 400 is used to pump the water source heat-exchanged with the heat exchanger 300 through the second pipeline 720 to the buffer water tank 200.

[0041] In this embodiment, the buffer water tank 200 transports the water source to the heat exchanger 300 through the first pipeline 710. The heat exchanger 300 heats the water source and then pumps it through the water pump to transport the heated water source to the buffer water tank 200 again through the second pipeline 720, and operates in this cycle, so as to achieve the purpose of heating the water source in the buffer water tank 200.

[0042] Furthermore, the heat pump indoor unit 10 further includes a water flow switch 800, and the water flow switch 800 is arranged on the first pipeline 710.

[0043] In this embodiment, by arranging the water flow switch 800 on the first pipeline 710, the first pipeline 710 is conducted or blocked according to the use requirements, or the water flow of the first pipeline 710 is adjusted according to the use requirements, so as to improve the functionality of the heat pump indoor unit 10.

[0044] Furthermore, the heat exchanger 300 is provided with a first heat exchange pipeline 310 and a second heat exchange pipeline 320. The first heat exchange pipeline 310 is used to transport the heat exchange medium to the heat exchanger 300, and the second heat exchange pipeline 320 is used to output the heat exchange medium.

[0045] In this embodiment, the heat exchange medium is usually a refrigerant. The first heat exchange pipeline 310 and the second heat exchange pipeline 320 are both connected to the outdoor unit. Therefore, after the refrigerant absorbs heat in the outdoor unit, it is transported to the heat exchanger 300 through the first heat exchange pipeline 310, enabling the refrigerant to exchange heat with the water source in the buffer water tank 200. After the heat exchange is completed, the refrigerant is input into the outdoor unit again through the second heat exchange pipeline 320 and circulates in this way, so as to achieve the heat exchange function of the heat exchanger 300.

[0046] Furthermore, the heat pump indoor unit 10 further includes an expansion tank 900 and a third pipeline 1000. The third pipeline 1000 is connected to the water outlet pipeline 600, and the expansion tank 900 is arranged on the third pipeline 1000.

[0047] In this embodiment, the expansion tank 900 is connected between the buffer water tank 200 and the second water pump 500. Therefore, by setting the expansion tank 900, the water hammer impact generated when the water pump starts and stops and when the system valves open and close can be buffered.

[0048] Furthermore, the buffer water tank 200 is also provided with a sewage pipeline 210. One end of the sewage pipeline 210 is connected to the bottom wall of the buffer water tank 200, and the other end is arranged outside the housing 100.

[0049] In this embodiment, by providing the sewage pipeline 210 in the buffer water tank 200, the impurities in the buffer water tank 200 can be discharged to avoid the accumulation of impurities in the buffer water tank 200 and the resulting pipeline blockage.

[0050] Furthermore, the buffer water tank 200 is also provided with a water inlet pipeline 220. One end of the water inlet pipeline 220 is connected to the top wall of the buffer water tank 200, and the other end is arranged outside the housing 100.

[0051] In this embodiment, both the water inlet pipeline 220 and the water outlet pipeline 600 are used to connect to the equipment at the user end, that is, the heated water source is transported to the user end through the water outlet pipeline 600, and the water source transported from the user end is received by the water inlet pipeline 220, so as to realize the recycling of the water source.

[0052] Furthermore, the buffer water tank 200 is also provided with an exhaust pipeline 230. One end of the exhaust pipeline 230 is connected to the top wall of the buffer water tank 200, and the other end is arranged outside the housing 100.

[0053] In this embodiment, by providing the exhaust pipeline 230 in the buffer water tank 200, the gas in the buffer water tank 200 can be discharged in time through the exhaust pipeline 230 to avoid excessive air pressure in the buffer water tank 200 and affecting the normal operation of the buffer water tank 200.

[0054] Furthermore, the housing 100 is provided with a connected first chamber 110 and a second chamber 120. The buffer water tank 200 is disposed in the first chamber 110, and the heat exchanger 300, the first water pump 400, the second water pump 500, and the water outlet pipeline 600 are all disposed in the second chamber 120.

[0055] In this embodiment, by disposing the relatively large-volume buffer water tank 200 in the first chamber 110, and disposing the relatively small-volume heat exchanger 300, the first water pump 400, the second water pump 500, and the water outlet pipeline 600 in the second chamber 120, the internal space of the housing 100 is rationally utilized, and the heat exchanger 300, the first water pump 400, the second water pump 500, and the water outlet pipeline 600 are reasonably designed and simply arranged, which is convenient for assembly.

[0056] In summary, the present utility model provides a split indoor unit 10 of a heat pump and an air source heat pump unit. Since the indoor temperature is usually higher than the outdoor temperature and usually higher than 0°C, the buffer water tank 200, the heat exchanger 300, the first water pump 400, the second water pump 500, and the water outlet pipeline 600 are disposed in the housing 100 of the split indoor unit 10 of the heat pump, so as to install the water system components of the air source heat pump unit indoors, which can avoid the water in the buffer water tank 200 and the pipeline from freezing, thereby avoiding damage to the water system components.

[0057] In addition, a conventional primary water system usually selects a water pump with a relatively large power to meet the requirements of water flow and head in actual use. When there is a demand at the indoor terminal or the host, the water pump has to run constantly, so the energy consumption of the water pump will increase greatly. And this solution adopts a secondary water system, that is, the relatively small-power first water pump 400 and the second water pump 500 are adopted. When the outdoor unit is turned on, the first water pump 400 is started to exchange heat through the heat exchanger 300, so as to heat the water temperature in the buffer water tank 200 to a preset temperature.

[0058] And the water outlet pipeline 600 is usually connected to the user end. For example, the water outlet pipeline 600 can be connected to floor heating, radiators or fan coils, etc., to provide a hot water source for them. Therefore, when there is a use demand at the user end, the second water pump 500 can be turned on to transport the heated water source in the buffer water tank 200 to the heat exchanger 300 at the user end for heat exchange again, which can effectively save the heating time at the user end.

[0059] Therefore, the small-power first water pump 400 is adopted to meet the requirements of the outdoor unit, and the small-power second water pump 500 can meet the requirements of the user end, so that when in use, one of the water pumps focuses on meeting the flow demand on the side of the heat exchanger 300, and the other water pump focuses on meeting the head demand at the end; in this case, the power of the two water pumps is less than the power of a large-power water pump, and since the time of using the heat exchanger 300 and the end by their respective water pumps is more reasonable than the time of using the existing water pump, the overall energy consumption during use can be reduced, achieving a more energy-saving effect, that is, greatly saving the time of using the two water pumps in their respective modules, thus achieving the purpose of saving energy consumption.

[0060] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A split indoor unit of a heat pump, characterized in that It includes a housing, a buffer water tank, a heat exchanger, a first water pump, a second water pump, and a water outlet pipeline; The buffer water tank, the heat exchanger, the first water pump, and the second water pump are all arranged in the housing. The buffer water tank, the heat exchanger, and the first water pump are connected in sequence and end to end to form a heating circuit. The first water pump is arranged in the heating circuit. The water outlet pipeline is connected to the buffer water tank, and the second water pump is arranged in the water outlet pipeline.

2. The in - unit body of the heat pump according to claim 1, characterized in that, The heating circuit includes a first pipeline and a second pipeline. The buffer water tank, the first pipeline, the heat exchanger, and the second pipeline are connected in sequence and end to end. The first water pump is arranged in the second pipeline. The first water pump is used to pump the water source that has exchanged heat with the heat exchanger through the second pipeline to the buffer water tank.

3. The indoor unit of the split heat pump according to claim 2, characterized in that, The in - body heat pump unit further includes a water flow switch, and the water flow switch is arranged in the first pipeline.

4. The in-unit heat pump according to claim 1, characterized in that, The heat exchanger is provided with a first heat exchange pipeline and a second heat exchange pipeline. The first heat exchange pipeline is used to convey a heat exchange medium to the heat exchanger, and the second heat exchange pipeline is used to output the heat exchange medium.

5. The indoor unit of the split heat pump according to claim 1, characterized in that The in - body heat pump unit further includes an expansion tank and a third pipeline. The third pipeline is connected to the water outlet pipeline, and the expansion tank is arranged in the third pipeline.

6. The in - door unit of the split - type heat pump according to claim 1, characterized in that, The buffer water tank is further provided with a sewage discharge pipeline. One end of the sewage discharge pipeline is connected to the bottom wall of the buffer water tank, and the other end is arranged outside the housing.

7. The indoor unit of the split heat pump according to claim 1, characterized in that, The buffer water tank is further provided with a water inlet pipeline. One end of the water inlet pipeline is connected to the top wall of the buffer water tank, and the other end is arranged outside the housing.

8. The in - unit heat pump according to claim 1, characterized in that, The buffer water tank is further provided with an exhaust pipeline. One end of the exhaust pipeline is connected to the top wall of the buffer water tank, and the other end is arranged outside the housing.

9. The indoor unit of the split heat pump according to claim 1, characterized in that, The housing is provided with a connected first chamber and a second chamber. The buffer water tank is arranged in the first chamber, and the heat exchanger, the first water pump, the second water pump, and the water outlet pipeline are all arranged in the second chamber.

10. An air source heat pump unit, characterized in that, It includes an outdoor unit and the in - body heat pump unit according to any one of claims 1 - 9. The outdoor unit and the in - body heat pump unit are connected through pipelines.

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