A heat pump device, an air conditioning system, and a control method of a heat pump device

Abstract

The application discloses a heat pump device, an air conditioning system and a control method of the heat pump device, and relates to the technical field of heat exchange. The application comprises an outdoor component, an indoor machine component, an inlet valve group and an outlet valve group. The inlet of each outdoor component is communicated with the first outlet of the indoor machine component, and the outlet of each outdoor component is communicated with the first inlet of the indoor machine component. The inlet valve group is communicated with the second outlet of the indoor machine component and the inlet of each outdoor component. The outlet valve group is communicated with the second inlet of the indoor machine component and the outlet of each outdoor component. Thus, the conducting state of the inlet valve group and the outlet valve group can be adjusted through the refrigeration or heating mode of the indoor machine component, and the functions of separate refrigeration, separate heating or simultaneous refrigeration and heating in multiple areas can be realized without adding a heat recovery module. Therefore, the structural complexity of the heat pump device is reduced, and the product adaptability of the heat pump device is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat exchange, in particular to a heat pump device, an air conditioning system and a control method of the heat pump device. BACKGROUND

[0002] Ordinary heat pump modules can only run in a single cooling mode or a single heating mode. Currently, in order to meet the demand of simultaneous cooling and heating in different rooms, a heat recovery module is usually used. Compared with ordinary heat pump modules, the heat recovery module is additionally provided with a heat exchanger, so that it can run in a single cooling mode, and at the same time, the waste heat dissipated into the air can be recovered through the heat exchanger for domestic water or heating.

[0003] However, when the heating load of the heat pump module is unstable, the heat recovery module may switch to a water-cooled or air-cooled heat exchanger operating in a cooling mode, which results in high structural complexity of the heat recovery module and low product applicability. SUMMARY

[0004] In view of the high structural complexity and low product applicability of the current heat recovery module, the present application is proposed to provide a heat pump device, an air conditioning system and a control method of the heat pump device which can overcome the above problems or at least partially solve the above problems.

[0005] Based on the first aspect of the present application, a heat pump device is provided, comprising:

[0006] at least two outdoor components;

[0007] an indoor unit component comprising at least two indoor units, wherein the liquid inlet of each outdoor component is in communication with the first liquid outlet of the indoor unit component, and the liquid outlet of each outdoor component is in communication with the first liquid inlet of the indoor unit component;

[0008] a liquid inlet valve group in communication with the second liquid outlet of the indoor unit component and the liquid inlet of each outdoor component, so as to adjust the liquid path communication state of the liquid inlet of the outdoor component through the liquid inlet valve group;

[0009] a liquid outlet valve group in communication with the second liquid inlet of the indoor unit component and the liquid outlet of each outdoor component, so as to adjust the liquid path communication state of the liquid outlet of the outdoor component through the liquid outlet valve group.

[0010] An optional summary of the application, the liquid inlet valve group comprises at least two liquid inlet three-way valves, wherein the number of liquid inlet three-way valves is the same as the number of outdoor components.

[0011] An optional embodiment, the liquid inlet of each of the outdoor components is in communication with the first end of the liquid inlet three-way valve, the first liquid outlet is in communication with the second end of the liquid inlet three-way valve, and the second liquid outlet is in communication with the third end of the liquid inlet three-way valve.

[0012] An optional embodiment, the liquid inlet three-way valve is an electric three-way valve, and the heat pump device further comprises a controller electrically connected with the liquid inlet three-way valve, so as to adjust the liquid path conduction state of the liquid inlet three-way valve through the controller.

[0013] An optional embodiment, the liquid outlet valve group comprises at least two liquid outlet three-way valves, wherein the number of the liquid outlet three-way valves is the same as the number of the outdoor components.

[0014] An optional embodiment, the liquid outlet of each of the outdoor components is in communication with the first end of the liquid outlet three-way valve, the first liquid inlet is in communication with the second end of the liquid outlet three-way valve, and the second liquid inlet is in communication with the third end of the liquid outlet three-way valve.

[0015] An optional embodiment, the liquid outlet three-way valve is an electric three-way valve, and the heat pump device further comprises a controller electrically connected with the liquid outlet three-way valve, so as to adjust the liquid path conduction state of the liquid outlet three-way valve through the controller.

[0016] An optional embodiment, the liquid inlet valve group and the liquid outlet valve group are both electric three-way valves, and the heat pump device further comprises a controller electrically connected with the liquid inlet valve group, the liquid outlet valve group, the indoor component, and the outdoor component, so as to control the liquid path communication state between the indoor component and the outdoor component through the controller.

[0017] An optional embodiment, the outdoor component comprises at least one outdoor unit.

[0018] Based on the second aspect of the present application, an air conditioning system is further provided, which comprises the heat pump device according to any one of the above embodiments.

[0019] Based on the third aspect of the present application, a control method of a heat pump device is further provided, wherein the heat pump device comprises the heat pump device according to any one of the above embodiments, and the control method comprises:

[0020] acquiring the number of units in operation of the current indoor unit of the indoor component and the unit operation mode of each indoor unit;

[0021] determining the target operation mode of the heat pump device according to the number of units in operation and the unit operation mode;

[0022] Adjust the liquid inlet valve group and the liquid outlet valve group according to the target operation mode, and start the outdoor unit to work.

[0023] An optional summary of the application, the target operation mode of the heat pump device is determined according to the number of operating units and the operation mode of the units, comprising:

[0024] In the case that the operation mode of all operating indoor units is heating mode, the target operation mode of the heat pump device is determined as complete heating mode;

[0025] In the case that the operation mode of all operating indoor units is cooling mode, the target operation mode of the heat pump device is determined as complete cooling mode;

[0026] In the case that the operation mode of the first number of operating indoor units is heating mode, and the operation mode of the second number of operating indoor units is cooling mode, the target operation mode of the heat pump device is determined as mixed operation mode;

[0027] An optional summary of the application, the method further comprises:

[0028] In the case that it is detected that there is an outdoor unit in shutdown mode, the outdoor environment temperature where the outdoor unit is located is detected according to the temperature sensor;

[0029] In the case that the outdoor environment temperature is lower than the first temperature threshold, the outdoor unit in shutdown mode is converted to heating mode.

[0030] Compared with the prior art, the present application comprises at least two outdoor units, an indoor unit, a liquid inlet valve group and a liquid outlet valve group. The indoor unit comprises at least two indoor units, wherein the liquid inlet of each outdoor unit is in communication with the first liquid outlet of the indoor unit, and the liquid outlet of each outdoor unit is in communication with the first liquid inlet of the indoor unit. The liquid inlet valve group is in communication with the second liquid outlet of the indoor unit, the liquid inlet of each outdoor unit, so as to adjust the liquid path communication state of the liquid inlet of the outdoor unit through the liquid inlet valve group. The liquid outlet valve group is in communication with the second liquid inlet of the indoor unit, the liquid outlet of each outdoor unit, so as to adjust the liquid path communication state of the liquid outlet of the outdoor unit through the liquid outlet valve group. Thus, the conduction state of the liquid inlet valve group and the liquid outlet valve group can be adjusted through the cooling or heating mode of the indoor unit, and the functions of separate cooling, separate heating or simultaneous cooling and heating in multiple areas can be realized without the need to add a heat recovery module. Therefore, the structural complexity of the heat pump device is reduced, and the product adaptability of the heat pump device is improved.

[0031] The above description is only a summary of the technical solutions of the present application. In order to make the technical means of the present application more clearly understood and implemented according to the content of the specification, and in order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described below. BRIEF DESCRIPTION OF DRAWINGS

[0032] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not meant to limit the present application. Furthermore, the same reference numerals in the attached drawings are intended to represent the same components throughout the several drawings.

[0033] In the drawings:

[0034] Figure 1 is a structural schematic diagram of a heat pump device provided by an embodiment of the present application;

[0035] Figure 2 is a step flow schematic diagram of a control method of a heat pump device provided by an embodiment of the present application;

[0036] Figure 3 is a water circulation schematic diagram of a heat pump device in a full heating mode provided by an embodiment of the present application;

[0037] Figure 4 is a water circulation schematic diagram of a heat pump device in a full cooling mode provided by an embodiment of the present application;

[0038] Figure 5 is a water circulation schematic diagram of a heat pump device in a mixed operation mode provided by an embodiment of the present application;

[0039] Figure 6 is a structural schematic diagram of an indoor unit assembly provided by an embodiment of the present application;

[0040] Reference signs: 1, outdoor assembly; 2, indoor unit assembly; 21, indoor unit; 22, first liquid inlet valve; 23, second liquid inlet valve; 201, first liquid outlet; 202, first liquid inlet; 203, second liquid outlet; 204, second liquid inlet; 3, liquid inlet valve group; 31, liquid inlet three-way valve; 4, liquid outlet valve group; 41, liquid outlet three-way valve; 5, controller; 6, heating water pump; 7, cooling water pump. DETAILED DESCRIPTION

[0041] Exemplary embodiments of the present application will be described herein below with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it is understood that the present application can be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present application to those skilled in the art.

[0042] Ordinary heat pump modules can only operate in a single cooling mode or a single heating mode. Currently, in order to meet the demand for simultaneous cooling and heating in different rooms, a heat recovery module is usually used. Compared with ordinary heat pump modules, the heat recovery module adds a heat exchanger, so that it can operate in a single cooling mode, and at the same time, the waste heat dissipated into the air can be recovered through the heat exchanger for domestic water or heating.

[0043] However, when the heating load of the heat pump module is unstable, the heat recovery module may switch to a water-cooled or air-cooled heat exchanger operating in a cooling mode, thereby causing the heat recovery module to have high structural complexity and low product applicability.

[0044] Based on the above technical problems, the present application embodiment is proposed, which can include at least two outdoor components 1, an indoor component 2, an inlet valve group 3, and an outlet valve group 4. The indoor component 2 includes at least two indoor units 21, wherein the inlet of each outdoor component 1 is in communication with the first outlet 201 of the indoor component 2, and the outlet of each outdoor component 1 is in communication with the first inlet 202 of the indoor component 2. The inlet valve group 3 is in communication with the second outlet 203 of the indoor component 2 and the inlet of each outdoor component 1, so as to adjust the liquid path communication state of the inlet of the outdoor component 1 through the inlet valve group 3. The outlet valve group 4 is in communication with the second inlet 204 of the indoor component 2 and the outlet of each outdoor component 1, so as to adjust the liquid path communication state of the outlet of the outdoor component 1 through the outlet valve group 4. Thus, the on-off state of the inlet valve group 3 and the outlet valve group 4 can be adjusted through the cooling or heating mode of the indoor unit 21, and the functions of single cooling, single heating, or simultaneous cooling and heating in multiple areas can be realized without adding a heat recovery module. Therefore, the structural complexity of the heat pump device is reduced, and the product applicability of the heat pump device is improved.

[0045] Referring to Figures 1-6 The present application embodiment provides a heat pump device, which can include at least two outdoor components 1, an indoor component 2, an inlet valve group 3, and an outlet valve group 4, wherein:

[0046] The indoor unit assembly 2 comprises at least two indoor units 21. The liquid inlet of each outdoor unit 1 is communicated with the first liquid outlet 201 of the indoor unit assembly 2, and the liquid outlet of each outdoor unit 1 is communicated with the first liquid inlet 202 of the indoor unit assembly 2. The liquid inlet valve group 3 is communicated with the second liquid outlet 203 of the indoor unit assembly 2 and the liquid inlet of each outdoor unit 1, so as to adjust the liquid path communication state of the liquid inlet of each outdoor unit 1 through the liquid inlet valve group 3. The liquid outlet valve group 4 is communicated with the second liquid inlet 204 of the indoor unit assembly 2 and the liquid outlet of each outdoor unit 1, so as to adjust the liquid path communication state of the liquid outlet of each outdoor unit 1 through the liquid outlet valve group 4.

[0047] In the embodiment of the present application, the outdoor unit assembly 1 is used to heat or cool the circulating water. For example, in the case of running in the cooling mode, the outdoor unit assembly 1 is used to cool the circulating water, so that the low-temperature circulating water (for example, between 5 and 10 degrees Celsius) can be sent into the indoor unit 21 to exchange heat with the indoor air, so as to achieve the cooling of the indoor environment. In the case of running in the heating mode, the outdoor unit assembly 1 is used to heat the circulating water, so that the high-temperature circulating water (for example, between 40 and 60 degrees Celsius) can be sent into the indoor unit 21 to exchange heat with the indoor air, so as to achieve the heating of the indoor environment.

[0048] The indoor unit assembly 2 can comprise at least two indoor units 21. For example, at least one indoor unit 21 can be arranged in each of the indoor environments separated from each other, so as to achieve the temperature control of each indoor environment. Referring to Figure 6 As shown, the first liquid inlets 202 of all the indoor units 21 are communicated in the liquid path and serve as the first liquid inlet 202 of the indoor unit assembly 2. The second liquid inlets 204 of all the indoor units 21 are communicated in the liquid path and serve as the second liquid inlet 204 of the indoor unit assembly 2. The first liquid outlets 201 of all the indoor units 21 are communicated in the liquid path and serve as the first liquid outlet 201 of the indoor unit assembly 2. The second liquid outlets 203 of all the indoor units 21 are communicated in the liquid path and serve as the second liquid outlet 203 of the indoor unit assembly 2. In addition, the indoor unit assembly 2 further comprises at least two first liquid valves 22 and at least two second liquid valves 23. The first liquid valves 22 and the second liquid valves 23 are used to control the circulating water flowing into the indoor units 21. For example, when the indoor unit 21 runs in the heating mode, the first liquid valve 22 corresponding to the indoor unit 21 is opened, and the second liquid valve 23 is closed, so that the high-temperature circulating water enters the indoor unit 21. For another example, when the indoor unit 21 runs in the cooling mode, the first liquid valve 22 corresponding to the indoor unit 21 is closed, and the second liquid valve 23 is opened, so that the low-temperature circulating water enters the indoor unit 21.

[0049] The liquid inlet of each outdoor component 1 is communicated with the first liquid outlet 201 of the indoor component 2, and the liquid outlet of each outdoor component 1 is communicated with the first liquid inlet 202 of the indoor component 2. The first liquid outlet 201 can be understood as the liquid outlet of high-temperature circulating water. The first liquid inlet 202 can be understood as the liquid inlet of high-temperature circulating water. The second liquid outlet 203 can be understood as the liquid outlet of low-temperature circulating water, and the second liquid inlet 204 can be understood as the liquid inlet of low-temperature circulating water. The liquid inlet valve group 3 can include at least two valves. The liquid outlet valve group 4 can include at least two valves.

[0050] The liquid inlet valve group 3 is communicated with the second liquid outlet 203 of the indoor component 2 and the liquid inlet of each outdoor component 1, so as to adjust the liquid path communication state of the liquid inlet of the outdoor component 1 through the liquid inlet valve group 3. That is, through the liquid inlet valve group 3, it can be used to control whether the water entering the outdoor component 1 is low-temperature circulating water or high-temperature circulating water. The liquid outlet valve group 4 is communicated with the second liquid inlet 204 of the indoor component 2 and the liquid outlet of each outdoor component 1, so as to adjust the liquid path communication state of the liquid outlet of the outdoor component 1 through the liquid outlet valve group 4. That is, through the liquid outlet valve group 4, it can be used to control whether the water entering the indoor component 21 is low-temperature circulating water or high-temperature circulating water. Thus, the on-off state of the liquid inlet valve group 3 and the liquid outlet valve group 4 can be adjusted through the cooling or heating mode of the indoor component 21, and the functions of separate cooling, separate heating or simultaneous cooling and heating in multiple areas can be realized. Therefore, the structural complexity of the heat pump device is reduced, and the product adaptability of the heat pump device is improved.

[0051] In summary, the embodiment of the present application discloses a heat pump device, which can include at least two outdoor components 1, an indoor component 2, a liquid inlet valve group 3 and a liquid outlet valve group 4. The indoor component 2 includes at least two indoor units 21, wherein the liquid inlet of each outdoor component 1 is communicated with the first liquid outlet 201 of the indoor component 2, and the liquid outlet of each outdoor component 1 is communicated with the first liquid inlet 202 of the indoor component 2. The liquid inlet valve group 3 is communicated with the second liquid outlet 203 of the indoor component 2 and the liquid inlet of each outdoor component 1, so as to adjust the liquid path communication state of the liquid inlet of the outdoor component 1 through the liquid inlet valve group 3. The liquid outlet valve group 4 is communicated with the second liquid inlet 204 of the indoor component 2 and the liquid outlet of each outdoor component 1, so as to adjust the liquid path communication state of the liquid outlet of the outdoor component 1 through the liquid outlet valve group 4. Thus, the on-off state of the liquid inlet valve group 3 and the liquid outlet valve group 4 can be adjusted through the refrigeration or heating mode of the indoor unit 21, and the functions of separate refrigeration, separate heating or simultaneous refrigeration and heating in multiple areas can be realized without adding a heat recovery module. Therefore, the structural complexity of the heat pump device is reduced, and the product adaptability of the heat pump device is improved.

[0052] In an optional embodiment of the present application, as shown in Figure 1 , Figure 3 , Figure 4 and Figure 5 , the liquid inlet valve group 3 includes at least two liquid inlet three-way valves 31, wherein the number of the liquid inlet three-way valves 31 is the same as the number of the outdoor components 1.

[0053] In the embodiment of the present application, the liquid inlet valve group 3 can include at least two liquid inlet three-way valves 31, and the number of the liquid inlet three-way valves 31 is consistent with the number of the outdoor components 1. Thus, the liquid path communication between the liquid inlet of the outdoor component 1 and the first liquid outlet 201 of the indoor unit 21 can be adjusted through each liquid inlet three-way valve 31, or the liquid path communication between the liquid inlet of the outdoor component 1 and the second liquid outlet 203 of the indoor unit 21 can be adjusted.

[0054] In some embodiments, the liquid inlet of each outdoor component 1 is in communication with the first end of the liquid inlet three-way valve 31, the first liquid outlet 201 is in communication with the second end of the liquid inlet three-way valve 31, and the second liquid outlet 203 is in communication with the third end of the liquid inlet three-way valve 31. In other words, when the valve core of the liquid inlet three-way valve 31 rotates by a certain angle, the first end of the liquid inlet three-way valve 31 is in liquid communication with the second end of the liquid inlet three-way valve 31, at this time the liquid inlet of the outdoor component 1 is in communication with the first liquid outlet 201. Thus, the high-temperature circulating water can be returned to the outdoor component 1. The liquid inlet three-way valve 31 is rotated by a certain angle, the first end of the liquid inlet three-way valve 31 is in liquid communication with the third end of the liquid inlet three-way valve 31, at this time the liquid inlet of the outdoor component 1 is in communication with the second liquid outlet 203. Thus, the low-temperature circulating water can be returned to the outdoor component 1. The pipeline connecting the liquid inlet of each outdoor component 1 and the first liquid outlet 201 can be partially shared, that is, the main pipeline and the branch pipeline are used to form the connection. The pipeline connecting the liquid inlet of each outdoor component 1 and the second liquid outlet 203 can also be partially shared, thereby reducing the complexity of the pipeline of the heat pump device.

[0055] In an alternative embodiment of the application, as shown in Figure 1 , the liquid inlet three-way valve 31 is an electric three-way valve, and the heat pump device further comprises a controller 5 electrically connected to the liquid inlet three-way valve 31 to adjust the liquid path conduction state of the liquid inlet three-way valve 31 through the controller 5.

[0056] In the embodiment of the application, the liquid inlet three-way valve 31 is an electric three-way valve, and the heat pump device can further comprise a controller 5 electrically connected to the liquid inlet three-way valve 31. Thus, the electric drive of the liquid inlet valve group 3 can be realized through the controller 5, the liquid path conduction state of the liquid inlet three-way valve 31 is adjusted, and the control convenience of the heat pump device is improved.

[0057] In an alternative embodiment of the application, as shown in Figure 1 , Figure 3 , Figure 4 and Figure 5 , the liquid outlet valve group 4 comprises at least two liquid outlet three-way valves 41, wherein the number of the liquid outlet three-way valves 41 is the same as the number of the outdoor components 1.

[0058] In the embodiment of the present application, the liquid inlet valve group 3 can include at least two liquid outlet three-way valves 41, and the number of the liquid outlet three-way valves 41 is consistent with the number of the outdoor units 1. Thus, the liquid outlet of each outdoor unit 1 can be connected to the first liquid inlet 202 of the indoor unit 21 through each liquid outlet three-way valve 41, or connected to the second liquid inlet 204 of the indoor unit 21. In this way, the liquid path of the liquid outlet three-way valve 41 can be adjusted to control the circulating water of different temperatures to flow into the first liquid inlet 202 (high-temperature circulating water) or the second liquid inlet 204 (low-temperature circulating water) of the indoor unit 21.

[0059] In some embodiments, the liquid outlet of each outdoor unit 1 is connected to the first end of each liquid outlet three-way valve 41, the first liquid inlet 202 is connected to the second end of each liquid outlet three-way valve 41, and the second liquid inlet 204 is connected to the third end of each liquid outlet three-way valve 41. In other words, when the valve core of the liquid outlet three-way valve 41 rotates by a certain angle, the first end of the liquid outlet three-way valve 41 is connected to the second end of the liquid outlet three-way valve 41, and the liquid outlet of the outdoor unit 1 is connected to the first liquid inlet 202. Thus, the high-temperature circulating water can flow into the indoor unit 21 in the heating mode. When the valve core of the liquid outlet three-way valve 41 rotates by another certain angle, the first end of the liquid outlet three-way valve 41 is connected to the third end of the liquid outlet three-way valve 41, and the liquid outlet of the outdoor unit 1 is connected to the second liquid inlet 204. Thus, the low-temperature circulating water can flow into the indoor unit 21 in the cooling mode. In addition, the pipes connecting the liquid outlet of each outdoor unit 1 to the first liquid inlet 202 can be partially shared, that is, the pipes can be connected by a main pipe and branch pipes. The pipes connecting the liquid outlet of each outdoor unit 1 to the second liquid inlet 204 can also be partially shared. Thus, the complexity of the pipes of the heat pump device can be reduced.

[0060] In an alternative embodiment of the present application, the liquid outlet three-way valve 41 is an electric three-way valve, and the heat pump device further includes a controller 5 electrically connected to the liquid outlet three-way valve 41. Thus, the liquid path of the liquid outlet three-way valve 41 can be adjusted by the controller 5.

[0061] In the embodiment of the present application, the liquid outlet three-way valve 41 is an electric three-way valve, and the heat pump device further includes a controller 5 electrically connected to the liquid outlet three-way valve 41. Thus, the liquid path of the liquid outlet three-way valve 41 can be adjusted by the controller 5.

[0062] In one optional embodiment of the invention, reference is made to... Figure 1 , Figure 3 , Figure 4 as well as Figure 5 As shown, both the inlet valve group 3 and the outlet valve group 4 are electric three-way valves. The heat pump device also includes a controller 5. The inlet valve group 3, the outlet valve group 4, the indoor unit component 2, and the outdoor unit component 1 are electrically connected to the controller 5 so as to control the liquid circuit connection status between the indoor unit component 2 and the outdoor unit component 1 through the controller 5.

[0063] In this embodiment of the invention, both the inlet valve group 3 and the outlet valve group 4 are electric three-way valves, which can electrically drive the inlet valve group 3 and the outlet valve group 4, thereby improving the control convenience of the heat pump device.

[0064] The inlet valve assembly 3, the outlet valve assembly 4, the indoor unit assembly 2, and the outdoor unit assembly 1 are electrically connected to the controller 5, so that the controller 5 can control the liquid circuit connection between the indoor unit assembly 2 and the outdoor unit assembly 1. Thus, when all indoor units 21 are operating in cooling mode, the controller 5 controls the inlet valve assembly 3 to activate, so that the second outlet 203 forms a liquid circuit connection with the inlet of the outdoor unit assembly 1. The controller also controls the outlet valve assembly 4 to activate, so that the second inlet 204 forms a liquid circuit connection with the outlet of the outdoor unit assembly 1, thereby realizing the cooling cycle of the indoor unit 21 and the outdoor unit assembly 1.

[0065] The first inlet valve 22 and the second inlet valve 23 are electrically connected to the controller 5, respectively, to control the circulating water flowing into the indoor unit 21. For example, when the indoor unit 21 is operating in heating mode, the first inlet valve 22 corresponding to the indoor unit 21 is open, and the second inlet valve 23 is closed, allowing high-temperature circulating water to enter the indoor unit 21. As another example, when the indoor unit 21 is operating in cooling mode, the first inlet valve 22 corresponding to the indoor unit 21 is closed, and the second inlet valve 23 is open, allowing low-temperature circulating water to enter the indoor unit 21.

[0066] In other embodiments, when all indoor units 21 are operating in heating mode, the controller 5 controls the liquid inlet valve assembly 3 to activate, thereby establishing a liquid path connection between the first liquid outlet 201 and the liquid inlet of the outdoor component 1. The controller also controls the liquid outlet valve assembly 4 to activate, thereby establishing a liquid path connection between the second liquid inlet 204 and the liquid outlet of the outdoor component 1, thus achieving a cooling cycle between the indoor unit 21 and the outdoor component 1.

[0067] In some other embodiments, when at least one indoor unit 21 operates in heating mode and at least one indoor unit 21 operates in cooling mode, the controller 5 controls the liquid inlet valve assembly 3 to operate, so that the first liquid outlet 201 corresponding to the indoor unit 21 operating in heating mode forms a liquid path connection with the liquid inlet of the outdoor component 1. The controller also controls the second liquid outlet 203 corresponding to the indoor unit 21 operating in cooling mode to form a liquid path connection with the liquid inlet of the outdoor component 1. The controller then controls the liquid outlet valve assembly 4 to operate, so that the first liquid inlet 202 corresponding to the indoor unit 21 operating in heating mode forms a liquid path connection with the liquid outlet of the outdoor component 1. Finally, the controller controls the second liquid inlet 204 corresponding to the indoor unit 21 operating in cooling mode to form a liquid path connection with the liquid inlet of the outdoor component 1. This allows for both cooling and heating cycles between the indoor unit 21 operating in cooling mode and the outdoor component 1 operating in heating mode.

[0068] In one optional embodiment of the invention, the outdoor component 1 includes at least one outdoor unit. The outdoor component 1 may include one outdoor unit or at least two outdoor units connected in series. The series connection of the outdoor units can be understood as the outlet of one outdoor unit serving as the inlet of the next outdoor unit, thereby enabling multi-stage heating or cooling of the circulating water. When at least two outdoor units are used, the inlet of the first outdoor unit serves as the inlet of the outdoor component 1, and the outlet of the last outdoor unit serves as the outlet of the outdoor component 1.

[0069] In one optional embodiment of the invention, reference is made to... Figure 1 and Figure 3 As shown, the heat pump device also includes a hot water pump 6, which is disposed between the first liquid outlet 201 and the liquid inlet of the outdoor component 1.

[0070] In this embodiment of the invention, the heat pump device may further include a hot water pump 6, which is located between the first liquid outlet 201 and the liquid inlet of the outdoor component 1. For example, the liquid inlet of the hot water pump 6 is connected to the liquid path of the first liquid outlet 201, and the liquid outlet of the hot water pump 6 is connected to the liquid inlet of the outdoor component 1, thereby providing the circulation power for high-temperature circulating water through the hot water pump 6 to improve the indoor heating efficiency in heating mode.

[0071] In one optional embodiment of the invention, reference is made to... Figure 1 and Figure 3 As shown, the heat pump device also includes a chilled water pump 7, which is disposed between the second liquid outlet 203 and the liquid inlet of the outdoor component 1.

[0072] In the embodiment of the present application, the heat pump device can further comprise a refrigeration water pump 7. The refrigeration water pump 7 is located between the second liquid outlet 203 and the liquid inlet of the outdoor unit 1. For example, the liquid inlet of the refrigeration water pump 7 is in liquid communication with the second liquid outlet 203, and the liquid outlet of the refrigeration water pump 7 is in communication with the liquid inlet of the outdoor unit 1, so that the circulation power of the low-temperature circulating water can be provided by the heating water pump 6 to improve the indoor heating efficiency in the cooling mode.

[0073] In summary, the embodiment of the present application discloses a heat pump device, which can comprise at least two outdoor units 1, an indoor unit 2, an inlet valve group 3 and an outlet valve group 4. The indoor unit 2 comprises at least two indoor units 21, wherein the liquid inlet of each outdoor unit 1 is in communication with the first liquid outlet 201 of the indoor unit 2, and the liquid outlet of each outdoor unit 1 is in communication with the first liquid inlet 202 of the indoor unit 2. The inlet valve group 3 is in communication with the second liquid outlet 203 of the indoor unit 2 and the liquid inlet of each outdoor unit 1, so as to adjust the liquid communication state of the liquid inlet of the outdoor unit 1 through the inlet valve group 3. The outlet valve group 4 is in communication with the second liquid inlet 204 of the indoor unit 2 and the liquid outlet of each outdoor unit 1, so as to adjust the liquid communication state of the liquid outlet of the outdoor unit 1 through the outlet valve group 4. Thus, the on-off state of the inlet valve group 3 and the outlet valve group 4 can be adjusted through the cooling or heating mode of the indoor unit 21, and the functions of separate cooling, separate heating or simultaneous cooling and heating in multiple areas can be realized without adding a heat recovery module. Therefore, the structural complexity of the heat pump device is reduced, and the product adaptability of the heat pump device is improved.

[0074] The embodiment of the present application further discloses an air conditioning system, which can comprise the heat pump device of any one of the above-mentioned embodiments. The air conditioning system can be applied to temperature control scenes in large commercial areas such as hotels, restaurants and supermarkets. It can meet the temperature control requirements of users in different temperature control areas, such as separate cooling, separate heating and simultaneous cooling and heating, and has the characteristics of strong product applicability, simple structure, easy maintenance and the like.

[0075] Reference Figure 2 The embodiment of the present application further discloses a control method of a heat pump device, which can comprise the heat pump device of any one of the above-mentioned embodiments, and the control method is applied to a controller 5 and comprises the following steps.

[0076] S201, obtaining the number of unit operation of the current indoor unit 21 of the indoor unit 2 and the unit operation mode of each indoor unit 21.

[0077] S202. Based on the number of units in operation and the unit operation mode, determine the target operation mode of the heat pump device.

[0078] S203. Adjust the inlet valve group 3 and the outlet valve group 4 according to the target operating mode, and start the outdoor component 1.

[0079] In this embodiment of the invention, the outdoor component 1, indoor unit 21, inlet valve group 3, and outlet valve group 4 are electrically connected to the controller 5. Thus, the controller 5 can acquire the operating status of each component. For example, it acquires the operating status of each component at preset time intervals. Therefore, based on the number of operating units in all indoor units 21 and their operating modes, the target operating mode of the heat pump device can be determined. For example, during spring and summer, or in transitional seasons like autumn and winter when weather changes are significant, some users may have cooling needs while others may have heating needs. Furthermore, in some industries, such as the long-term storage of medicines or food, which is unaffected by outdoor weather, the indoor units 21 in the storage area need to operate in cooling mode for extended periods. Therefore, a heat pump device may have needs for individual cooling, individual heating, or simultaneous cooling and heating.

[0080] Therefore, the target operating mode of the heat pump device can be determined based on the operating mode of the indoor unit 21 and the number of operating units in the corresponding operating mode.

[0081] In some implementations, refer to Figure 3 As shown, when all operating indoor units 21 are in heating mode, the target operating mode of the heat pump device is determined to be full heating mode (which can also be understood as standalone heating mode). Therefore, when the target operating mode is full heating mode, the controller 5 can control the inlet valve assembly 3 to operate, thereby connecting the inlet of the outdoor unit 1 to the first outlet 201 of the indoor unit 2. The outlet of the outdoor unit 1 is connected to the first inlet 202 of the indoor unit 2. Furthermore, based on the cumulative heating power of the currently operating indoor units 21, the number of outdoor units 1 matching the cumulative heating power can be matched to obtain the target number. The target number of outdoor units 1 are then activated for heating cycle.

[0082] For example, taking the total number of outdoor components 1 as 10, in the case of 8 outdoor components 1 being started, the high-temperature circulating water from the outdoor components 1 first passes through the outlet valve group 4 to reach the first inlet of the indoor unit 21. Then, the indoor air is heated in the indoor unit 21 to achieve the effect of indoor temperature rise. The circulating water flowing out of the first outlet of the indoor unit 21 is cooled to medium-temperature circulating water (for example, between 30 and 40 degrees Celsius). Then, it flows to the inlet valve group 3 and finally enters the outdoor components 1. After absorbing the heat of the high-temperature refrigerant in the outdoor components 1, it flows out of the outlet of the outdoor components 1 for circulation.

[0083] The remaining outdoor components 1 are in the shutdown mode. The inlet and outlet three-way valves 31 and 41 of the outdoor components 1 in the shutdown mode can be randomly determined and are not limited here. The refrigerated water pump 7 can be in the shutdown mode.

[0084] Referring to Figure 4 In the case where all the indoor units 21 are in the cooling mode, the target operating mode of the heat pump device is determined to be the cooling mode.

[0085] Therefore, in the case where the target operating mode is the cooling mode, the controller 5 can control the inlet valve group 3 to act, so that the inlet of the outdoor components 1 is in communication with the second outlet of the indoor unit 2. At this time, the outlet of the outdoor components 1 is in communication with the second inlet of the indoor unit 2. The target number of outdoor components 1 can be obtained according to the cumulative heating power of the indoor units 21 being operated and the number of outdoor components 1 matching the cumulative heating power, and the target number of outdoor components 1 is started for cooling circulation.

[0086] For example, taking the total number of outdoor components 1 as 10, in the case of 8 outdoor components 1 being started, the low-temperature circulating water from the outdoor components 1 first passes through the outlet valve group 4 to reach the second inlet of the indoor unit 21. Then, the indoor air is heated in the indoor unit 21 to achieve the effect of indoor temperature rise. The circulating water flowing out of the first outlet of the indoor unit 21 is cooled to medium-temperature circulating water (for example, between 30 and 40 degrees Celsius). Then, it flows to the inlet valve group 3 and finally enters the outdoor components 1. After absorbing the heat of the high-temperature refrigerant in the outdoor components 1, it flows out of the outlet of the outdoor components 1 for circulation.

[0087] The remaining outdoor units 1 are in the shutdown mode, and the liquid inlet three-way valve 31 and the liquid outlet three-way valve 41 of the outdoor unit 1 in the shutdown mode are randomly determined, which is not limited herein. The heating water pump 6 can be in the shutdown mode.

[0088] Referring to Figure 5 In the case that the unit operation mode of the first number of indoor units 21 is the heating mode and the unit operation mode of the second number of indoor units 21 is the cooling mode, the target operation mode of the heat pump device is determined to be the mixed operation mode (which can also be understood as the simultaneous cooling and heating mode).

[0089] In the case that the target operation mode is the mixed operation mode, the first target number of outdoor units 1 can be obtained according to the first cumulative heating power of the first number of indoor units 21 in the heating mode, and the first target number of outdoor units 1 is started to perform the heating cycle. The liquid inlet three-way valve 31 connected to the outdoor unit 1 in the heating cycle is controlled to act, and the liquid inlet of the outdoor unit 1 in the heating cycle is connected to the first liquid outlet 201 to form a liquid path. The liquid outlet three-way valve 41 connected to the outdoor unit 1 in the heating cycle is controlled to act, and the liquid outlet of the outdoor unit 1 in the heating cycle is connected to the first liquid inlet 202 to form a liquid path.

[0090] And, the second target number of outdoor units 1 can be obtained according to the second cumulative heating power of the second number of indoor units 21 in the cooling mode, and the second target number of outdoor units 1 is started to perform the cooling cycle. The liquid inlet three-way valve 31 connected to the outdoor unit 1 in the cooling cycle is controlled to act, and the liquid inlet of the outdoor unit 1 in the cooling cycle is connected to the second liquid outlet 203 to form a liquid path. The liquid outlet three-way valve 41 connected to the outdoor unit 1 in the cooling cycle is controlled to act, and the liquid outlet of the outdoor unit 1 in the cooling cycle is connected to the second liquid inlet 204 to form a liquid path.

[0091] In the case that the target operation mode is the complete heating mode or the mixed cooling and heating mode, there may be a situation that the outdoor environment temperature is low, which may cause the pipe of the outdoor unit 1 in the shutdown mode to be frozen and cracked. Therefore, in some optional embodiments of the application, the method further comprises:

[0092] In the case that the outdoor unit 1 in the shutdown mode is detected, the outdoor environment temperature of the outdoor unit 1 is detected by the temperature sensor.

[0093] In the case that the outdoor ambient temperature is lower than a first temperature threshold, the outdoor assembly 1 in the shutdown mode is converted into a heating mode.

[0094] In the embodiments of the present application, in the case that it is detected that the outdoor assembly 1 is in the shutdown mode, the outdoor ambient temperature can also be detected according to a temperature sensor installed on the outer surface of the outdoor assembly 1. The temperature sensor is electrically connected to the controller 5. Thus, when the temperature sensor transmits the outdoor ambient temperature to the controller 5, the controller 5 compares the outdoor ambient temperature. For example, a first temperature threshold can be preset. The first temperature threshold can be understood as a temperature threshold for determining whether the pipeline has a risk of cracking. It can be less than or equal to 1 degree Celsius, etc. Thus, in the case that the outdoor ambient temperature is less than or equal to the first temperature threshold, the outdoor assembly 1 in the shutdown mode is converted into the heating mode. At the same time, the liquid inlet three-way valve 31 and the liquid outlet three-way valve 41 associated with the outdoor assembly 1 are adjusted, so that the outdoor assembly 1 performs a heating cycle.

[0095] In some optional embodiments, during the operation of the outdoor assembly 1 in the heating mode after being converted from the shutdown mode, the outdoor ambient temperature is continuously detected by the temperature sensor. If the outdoor ambient temperature exceeds a second temperature threshold, the operation of the outdoor assembly 1 is stopped, i.e., the outdoor assembly 1 is converted from the heating mode to the shutdown mode. The second temperature threshold can include but is not limited to 3 degrees Celsius, 4 degrees Celsius, 5 degrees Celsius, etc. Thus, on the basis of ensuring that the pipeline will not be damaged by freezing, energy can also be saved, and energy waste can be avoided.

[0096] In summary, the embodiment of the present application discloses a heat pump device, an air conditioning system and a control method of the heat pump device, which can include at least two outdoor components 1, an indoor component 2, a liquid inlet valve group 3 and a liquid outlet valve group 4. The indoor component 2 includes at least two indoor units 21, wherein the liquid inlet of each outdoor component 1 is communicated with the first liquid outlet 201 of the indoor component 2, and the liquid outlet of each outdoor component 1 is communicated with the first liquid inlet 202 of the indoor component 2. The liquid inlet valve group 3 is communicated with the second liquid outlet 203 of the indoor component 2 and the liquid inlet of each outdoor component 1, so as to adjust the liquid path communication state of the liquid inlet of the outdoor component 1 through the liquid inlet valve group 3. The liquid outlet valve group 4 is communicated with the second liquid inlet 204 of the indoor component 2 and the liquid outlet of each outdoor component 1, so as to adjust the liquid path communication state of the liquid outlet of the outdoor component 1 through the liquid outlet valve group 4. Thus, the conduction state of the liquid inlet valve group 3 and the liquid outlet valve group 4 can be adjusted through the refrigeration or heating mode of the indoor unit 21, and the functions of separate refrigeration, separate heating or simultaneous refrigeration and heating in multiple areas can be realized without adding a heat recovery module. Therefore, the structural complexity of the heat pump device is reduced, and the product adaptability of the heat pump device is improved.

[0097] Each embodiment in the specification is described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between each embodiment can be referred to each other.

[0098] It is easy for those skilled in the art to think that any combination of the above-mentioned embodiments is feasible, so any combination of the above-mentioned embodiments is an embodiment of the present application, but due to the limitation of the length, the specification will not be described in detail here.

[0099] In the specification provided here, a large number of specific details are described. However, it can be understood that the embodiments of the present application can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail in order not to obscure the understanding of the specification.

[0100] Similarly, it should be understood that, in order to simplify the present application and help understand one or more of the various inventive aspects, in the above description of the exemplary embodiments of the present application, various features of the present application are sometimes grouped together in a single embodiment, figure or description thereof.

[0101] Furthermore, those skilled in the art will recognize that, while certain embodiments described herein include certain features that are not included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the application and form different embodiments, for example, in the claims. For example, in the claims, any of the claimed embodiments can be used in any combination.

Claims

1. A heat pump apparatus, characterized by, The heat pump device comprises: At least two outdoor components (1); An indoor unit component (2) comprising at least two indoor unit groups (21), wherein the liquid inlet of each outdoor component (1) is in communication with the first liquid outlet (201) of the indoor unit component (2), and the liquid outlet of each outdoor component (1) is in communication with the first liquid inlet (202) of the indoor unit component (2); A liquid inlet valve group (3) in communication with the second liquid outlet (203) of the indoor unit component (2) and the liquid inlet of each outdoor component (1), so as to adjust the liquid path communication state of the liquid inlet of the outdoor component (1) through the liquid inlet valve group (3), wherein the liquid inlet valve group (3) comprises at least two liquid inlet three-way valves (31), the number of the liquid inlet three-way valves (31) is the same as the number of the outdoor components (1), the liquid inlet of each outdoor component (1) is in communication with the first end of each liquid inlet three-way valve (31), the first liquid outlet (201) is in communication with the second end of each liquid inlet three-way valve (31), and the second liquid outlet (203) is in communication with the third end of each liquid inlet three-way valve (31); A liquid outlet valve group (4) in communication with the second liquid inlet (204) of the indoor unit component (2) and the liquid outlet of each outdoor component (1), so as to adjust the liquid path communication state of the liquid outlet of the outdoor component (1) through the liquid outlet valve group (4), wherein the liquid outlet valve group (4) comprises at least two liquid outlet three-way valves (41), the number of the liquid outlet three-way valves (41) is the same as the number of the outdoor components (1), the liquid outlet of each outdoor component (1) is in communication with the first end of each liquid outlet three-way valve (41), the first liquid inlet (202) is in communication with the second end of each liquid outlet three-way valve (41), and the second liquid inlet (204) is in communication with the third end of each liquid outlet three-way valve (41).

2. Heat pump apparatus according to claim 1, characterised in that The liquid inlet three-way valve (31) is an electric three-way valve, and the heat pump device further comprises a controller (5) electrically connected with the liquid inlet three-way valve (31) to adjust the liquid path conduction state of the liquid inlet three-way valve (31) through the controller (5).

3. The heat pump apparatus according to claim 1, wherein The liquid outlet three-way valve (41) is an electric three-way valve, and the heat pump device further comprises a controller (5) electrically connected with the liquid outlet three-way valve (41) to adjust the liquid path conduction state of the liquid outlet three-way valve (41) through the controller (5).

4. The heat pump apparatus according to claim 1, wherein The liquid inlet valve group (3) and the liquid outlet valve group (4) both adopt electric three-way valves, and the heat pump device further comprises a controller (5), and the liquid inlet valve group (3), the liquid outlet valve group (4), the indoor unit component (2), and the outdoor component (1) are electrically connected with the controller (5) respectively to control the liquid path communication state between the indoor unit component (2) and the outdoor component (1) through the controller (5).

5. The heat pump apparatus according to claim 1, wherein The outdoor component (1) comprises at least one outdoor unit.

6. The heat pump apparatus according to claim 1, wherein The heat pump device further comprises a hot water pump (6) arranged between the first liquid outlet (201) and a liquid inlet of the outdoor unit (1).

7. The heat pump apparatus according to claim 1, wherein The heat pump device further comprises a cold water pump (7) arranged between the second liquid outlet (203) and a liquid inlet of the outdoor unit (1).

8. An air conditioning system characterized by, The air conditioning system comprises the heat pump device according to any one of claims 1-7.

9. A control method of a heat pump apparatus, characterized by, The heat pump device comprises the heat pump device according to any one of claims 1-7, and the control method comprises: acquiring a current number of indoor unit groups (21) of the indoor unit (2) and a group operation mode of each indoor unit group (21); determining a target operation mode of the heat pump device according to the number of indoor unit groups (21) and the group operation mode; adjusting the liquid inlet valve group (3) and the liquid outlet valve group (4) according to the target operation mode, and starting the outdoor unit (1) to work.

10. The control method of a heat pump device according to claim 9, characterized by, The determining of the target operation mode of the heat pump device according to the number of indoor unit groups (21) and the group operation mode comprises: in a case where the group operation mode of all the running indoor unit groups (21) is a heating mode, determining that the target operation mode of the heat pump device is a complete heating mode; in a case where the group operation mode of all the running indoor unit groups (21) is a cooling mode, determining that the target operation mode of the heat pump device is a complete cooling mode; in a case where the group operation mode of a first number of indoor unit groups (21) is a heating mode and the group operation mode of a second number of indoor unit groups (21) is a cooling mode, determining that the target operation mode of the heat pump device is a mixed operation mode.

11. The control method of a heat pump device according to claim 9, characterized by, The method further comprises: in a case where it is detected that there is an outdoor unit (1) in a shutdown mode, detecting an outdoor ambient temperature of the outdoor unit (1) according to a temperature sensor; in a case where the outdoor ambient temperature is lower than a first temperature threshold, converting the outdoor unit (1) in the shutdown mode into a heating mode.

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