Heat pump unit and air conditioning system

Abstract

The invention discloses a heat pump unit and an air conditioning system. The heat pump unit comprises a refrigerant flow path, a plurality of heat exchange assemblies and a plurality of adjusting valves, wherein the heat exchange assemblies and the adjusting valves are arranged on the refrigerant flow path and can be used for adjusting the working mode of the heat pump unit. At least one heat exchange assembly in the heat exchange assemblies is composed of a first heat exchange part and a second heat exchange part, and heat exchange can be conducted between the first heat exchange part and the second heat exchange part. Compared with the prior art, the fin type heat exchanger and the driving plate heat exchanger are arranged to be composed of the two heat exchange parts, heat exchange can be conducted between the two heat exchange parts, and therefore part of heat such as waste heat of the fin type heat exchanger and invalid heat dissipation of the driving plate radiator can be used in a combined mode to conduct heating or water heating; comprehensive management and reasonable utilization of a plurality of heat sources in different working modes are realized, and the utilization rate of heat is improved.

Description

Technical Field

[0001] The invention relates to the field of refrigeration and heating, and in particular to a heat pump unit and an air conditioning system. Background Art

[0002] Air source heat pump units absorb (release) heat from the air and release (absorb) heat to the air conditioning system, thereby heating (cooling) the room. Air source heat pump units are the mainstream products in the current market. Their driver boards usually have an ineffective heat generation of 5% to 8% of the input power. This part of heat is generally dissipated into the air, resulting in ineffective heat dissipation.

[0003] In addition, when the heat pump unit is cooling, the heat pump unit dissipates heat to the air through the outdoor fins, and there is also some ineffective heat loss;

[0004] When the heat pump unit is heating or producing hot water, when the outdoor temperature is low, frost will form on the surface of its fins. The frost layer will affect air circulation and heat exchange, causing the efficiency of the heat pump unit to decrease or even fail. Therefore, regular defrosting is required. The common method is to reverse the four-way valve. The heat pump unit takes heat from the hot water system of the air-conditioning system and releases heat to the fins in the opposite direction, melting the frost into water and then removing it. During defrosting, the heat pump absorbs heat from the air-conditioning system, which will cause the room temperature to drop, the effective heating capacity of the heat pump air conditioner to decrease, and the room temperature to become uncomfortable.

[0005] From the operation process of the above heat pump unit, it can be seen that there are two parts of ineffective heat loss in the heat pump unit. At the same time, there is a heat demand when defrosting is required. Therefore, how to utilize the ineffective heat dissipation of the heat pump unit for heating and hot water production of the heat pump unit can realize the rational use of heat.

[0006] Therefore, how to design a heat pump unit and air conditioning system that can achieve rational use of heat is a technical problem that needs to be solved urgently in the industry. Summary of the invention

[0007] In view of the problem of heat waste in the prior art when a heat pump unit is working, the present invention proposes a heat pump unit and an air conditioning system.

[0008] The technical solution of the present invention is to propose a 1. heat pump unit, characterized in that it includes a refrigerant flow path, and a plurality of heat exchange components and regulating valves arranged on the refrigerant flow path and used for adjusting the working mode of the heat pump unit;

[0009] At least one group of the heat exchange components in the heat exchange components consists of a first heat exchange part and a second heat exchange part, and heat exchange can be performed between the first heat exchange part and the second heat exchange part.

[0010] Further, the heat exchange assembly includes: a plate heat exchanger, a fin heat exchanger, and a driving plate heat exchanger;

[0011] Among them, the plate heat exchanger is a refrigerant-water heat exchanger;

[0012] The fin heat exchanger has a refrigerant-air heat exchange tube serving as the first heat exchange part and a refrigerant-water heat exchange tube serving as the second heat exchange part, and the refrigerant-air heat exchange tube and the refrigerant-water heat exchange tube are connected in series on the same fin;

[0013] The driving plate heat exchanger has an air-cooled radiator serving as the first heat exchange part and a water-cooled heat exchange tube serving as the second heat exchange part, and both the air-cooled radiator and the water-cooled heat exchange tube are connected to the driving plate for heat exchange.

[0014] Further, the regulating valve includes a first regulating valve connected between the hot water pump and the driving plate heat exchanger, a second regulating valve passing through the fin heat exchanger and connected between the hot water pump and the driving plate heat exchanger, a third regulating valve and a fourth regulating valve connected in series between the hot water tank and the plate heat exchanger, a sixth regulating valve connected between the air conditioner indoor unit and the plate heat exchanger, a seventh regulating valve connected between the air conditioner pump and the plate heat exchanger, and a fifth regulating valve with one end connected between the plate heat exchanger and the sixth regulating valve and the other end connected between the hot water tank and the fourth regulating valve. The driving plate heat exchanger is also connected between the third regulating valve and the fourth regulating valve.

[0015] Further, the heat pump unit has a single heating mode, and in the single heating mode, the sixth regulating valve and the seventh regulating valve are opened, the water-cooled heat exchange tubes in the plate heat exchanger and the driving plate heat exchanger release heat, and the refrigerant-air heat exchange tube in the fin heat exchanger absorbs heat.

[0016] Further, the heat pump unit has a single hot water production mode, and in the single hot water production mode, the first regulating valve, the third regulating valve, and the fifth regulating valve are opened, the water-cooled heat exchange tubes in the plate heat exchanger and the driving plate heat exchanger release heat, and the refrigerant-air heat exchange tube in the fin heat exchanger absorbs heat.

[0017] Further, the heat pump unit has a single cooling mode, and in the single cooling mode, the sixth regulating valve and the seventh regulating valve are opened, the plate heat exchanger absorbs heat, and the refrigerant-air heat exchange tube in the fin heat exchanger and the water-cooled heat exchange tube in the driving plate heat exchanger release heat.

[0018] Further, the heat pump unit also has a heating and non-stop defrosting mode, and a heating and heat recovery mode;

[0019] And in the heating and non-stop defrosting mode, the second regulating valve, the fourth regulating valve, the sixth regulating valve, and the seventh regulating valve are opened, the water-cooled heat exchange tubes in the plate heat exchanger and the driving plate heat exchanger release heat, and the refrigerant-air heat exchange tubes and the refrigerant-water heat exchange tubes in the fin heat exchanger absorb heat;

[0020] In the heating and heat recovery mode, the first regulating valve, the fourth regulating valve, the sixth regulating valve, and the seventh regulating valve are opened, the water-cooled heat exchange tubes in the plate heat exchanger and the driving plate heat exchanger release heat, and the refrigerant-air heat exchange tubes in the fin heat exchanger absorb heat.

[0021] Furthermore, the heat pump unit also has a hot water heating and non-stop defrosting mode. And in the hot water heating and non-stop defrosting mode, the second regulating valve, the third regulating valve, and the fifth regulating valve are opened, the water-cooled heat exchange tubes in the plate heat exchanger and the driving plate heat exchanger release heat, and the refrigerant-air heat exchange tubes and the refrigerant-water heat exchange tubes in the fin heat exchanger absorb heat.

[0022] Furthermore, the heat pump unit also has a refrigeration heat recovery mode. And in the refrigeration heat recovery mode, the second regulating valve, the fourth regulating valve, the sixth regulating valve, and the seventh regulating valve are opened, the plate heat exchanger absorbs heat, and the refrigerant-air heat exchange tubes, the refrigerant-water heat exchange tubes in the fin heat exchanger, and the water-cooled heat exchange tubes in the driving plate heat exchanger release heat.

[0023] The present invention also provides an air conditioning system, which has the above-mentioned heat pump unit.

[0024] Compared with the prior art, the present invention has at least the following beneficial effects:

[0025] In the present invention, the fin heat exchanger has refrigerant-air heat exchange tubes serving as the first heat exchange part and refrigerant-water heat exchange tubes serving as the second heat exchange part, and the driving plate heat exchanger has an air-cooled radiator serving as the first heat exchange part and water-cooled heat exchange tubes serving as the second heat exchange part. Heat exchange can be carried out between the above-mentioned first heat exchange part and the second heat exchange part, so that the present invention can utilize the heat loss of the driving plate heat exchanger and the heat loss of the fin heat exchanger. At the same time, with the control of the regulating valve, the present invention can use the heat loss of the above-mentioned driving plate heat exchanger and the heat loss of the fin heat exchanger to produce hot water and heat the air conditioning system, and use the hot water in the hot water tank and the heat loss of the driving plate heat exchanger to defrost, improving the comfort during defrosting, and realizing the comprehensive management and utilization of multiple heat sources in the heat pump unit in three different modes, namely single refrigeration mode, single heating mode, and single hot water heating mode. Description of the Drawings

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only 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.

[0027] Figure 1 It is a schematic structural diagram of the heat pump unit proposed by the present invention;

[0028] Figure 2 It is a flowchart of the present invention in the single heating mode;

[0029] Figure 3 It is a flowchart of the present invention in the heating and non-stop defrosting mode;

[0030] Figure 4 It is a flowchart of the present invention in the heating and heat recovery mode;

[0031] Figure 5 It is a flowchart of the present invention in the single hot water heating mode;

[0032] Figure 6 It is a flowchart of the present invention in the hot water heating and non-stop defrosting mode;

[0033] Figure 7 It is a flowchart of the present invention in the single cooling mode;

[0034] Figure 8 It is a flowchart of the present invention in the cooling heat recovery mode;

[0035] Figure 9 It is a schematic structural diagram of the fin heat exchanger in the present invention;

[0036] Figure 10 It is a schematic structural diagram of the drive plate heat exchanger in the present invention;

[0037] Figure 11 It is an action logic table of the corresponding regulating valve switch states in each working mode of the present invention;

[0038] Figure 12 It is a logic table of each working mode corresponding to each heat source state of the present invention. Specific Embodiments

[0039] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clear and understandable, the following further details the present invention in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0040] Accordingly, a feature pointed out in this specification will be used to illustrate one of the features of an embodiment of the present invention, rather than implying that each embodiment of the present invention must have the illustrated feature. In addition, it should be noted that this specification describes many features. Although certain features may be combined to show possible system designs, these features may also be used in other combinations not explicitly described. Accordingly, unless otherwise stated, the illustrated combinations are not intended to be limiting.

[0041] The principles and structure of the present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0042] Currently, air source heat pump units are the mainstream products in the market. Their drive boards usually have ineffective heat generation of 5% - 8% of the input electric power. This part of the heat is generally dissipated into the air, resulting in ineffective heat dissipation. In addition, when the heat pump unit is cooling, the heat pump unit dissipates heat to the air through the outdoor fins, and there is also a part of ineffective heat loss.

[0043] The present invention addresses the problems existing in the above-mentioned prior art and proposes a heat pump unit, which includes a refrigerant flow path, and a plurality of heat exchange components and regulating valves disposed on the refrigerant flow path and capable of adjusting the working mode of the heat pump unit.

[0044] At least one group of the heat exchange components consists of a first heat exchange part and a second heat exchange part, and heat exchange can be carried out between the first heat exchange part and the second heat exchange part.

[0045] Based on the above heat pump unit, the design idea of the present invention is to set the fin heat exchanger and the drive board heat exchanger to have two heat exchange parts. In this way, when there is ineffective heat dissipation in the fin heat exchanger, the heat dissipated by this part of the fin heat exchanger can be obtained through the heat exchange between the two heat exchange parts.

[0046] Similarly, when there is ineffective heat generation in the drive board heat exchanger, the ineffective heat generation of this part of the drive board heat exchanger can be obtained through the heat exchange between the two heat exchange parts.

[0047] Under this setting, the present invention can utilize the original ineffective heat loss in each heat exchange component, and then cooperate with the regulating valve and the refrigerant flow path provided in the present invention to realize the transfer of heat in the entire heat pump unit, and transmit this part of the heat to different systems respectively to realize the rational utilization of heat.

[0048] Please refer to Figure 9 and Figure 10 , the heat exchange components in the present invention include: a plate heat exchanger, a fin heat exchanger, and a drive board heat exchanger.

[0049] Among them, the plate heat exchanger is a refrigerant - water heat exchanger.

[0050] The fin heat exchanger has a refrigerant-air heat exchange tube serving as the first heat exchange part and a refrigerant-water heat exchange tube serving as the second heat exchange part, and the refrigerant-air heat exchange tube and the refrigerant-water heat exchange tube are connected in series on the same fin;

[0051] The drive board heat exchanger has an air-cooled radiator serving as the first heat exchange part and a water-cooled heat exchange tube serving as the second heat exchange part. The air-cooled radiator and the water-cooled heat exchange tube are both connected to the drive board for heat exchange.

[0052] Figure 9 It is a schematic structural diagram of the fin heat exchanger in the present invention. It can be seen that the fin heat exchanger in the present invention is composed of two parts of heat exchange tubes, namely, a refrigerant-air heat exchange tube and a refrigerant-water heat exchange tube. Here, the refrigerant-air heat exchange tube is the first heat exchange part, and the refrigerant-water heat exchange tube is the second heat exchange part. Since the two parts of heat exchange tubes are connected in series on the same fin, heat exchange can be carried out between these two parts of heat exchange tubes. As can be known from the previous text, when the heat pump unit is refrigerating, the fin will dissipate heat to the air, and there is an ineffective loss of heat at this time. After the fin heat exchanger in the present invention is divided into a refrigerant-air heat exchange tube and a refrigerant-water heat exchange tube, when the above-mentioned fin dissipates heat to the air, that is, when the refrigerant-air heat exchange tube dissipates heat, this part of heat can be transferred to the refrigerant-water heat exchange tube, and then this part of heat can be utilized, so as to provide heat for the subsequent single heating mode and single hot water mode;

[0053] Figure 10 It is a schematic structural diagram of the drive board heat exchanger in the present invention, which includes an air-cooled radiator and a water-cooled heat exchange tube. Here, the air-cooled radiator is the first heat exchange part, and the water-cooled heat exchange tube is the second heat exchange part. According to the previous introduction, the drive board usually has an ineffective heat generation of 5% - 8% of the input electric power, and it is generally dissipated to the air through the air-cooled radiator. After the above two heat exchange parts are set in the present invention, this part of ineffective heat generation can be obtained through the water-cooled heat exchange tube, and then used to provide heat for the subsequent single heating mode and single hot water mode;

[0054] In addition, the heat exchange component in the present invention further includes a plate heat exchanger, which is a refrigerant-water heat exchanger, and its composition is the same as that of a traditional plate heat exchanger, mainly used for heat transfer;

[0055] From the above settings, it can be seen that the present invention adjusts the structure of the heat exchange component and sets it as the first heat exchange part and the second heat exchange part, which can obtain the ineffective heat generation in the heat exchange component and use it for heating in other modes, realizing the reasonable utilization of heat.

[0056] Please refer to Figure 1, in the present invention, there are seven regulating valves, including a first regulating valve connected between the hot water pump and the driving plate heat exchanger, a second regulating valve passing through the fin heat exchanger and connected between the hot water pump and the driving plate heat exchanger, a third regulating valve and a fourth regulating valve connected in series between the hot water tank and the plate heat exchanger, a sixth regulating valve connected between the air conditioner indoor unit and the plate heat exchanger, a seventh regulating valve connected between the air conditioner pump and the plate heat exchanger, and a fifth regulating valve with one end connected between the plate heat exchanger and the sixth regulating valve and the other end connected between the hot water tank and the fourth regulating valve. The driving plate heat exchanger is also connected between the third regulating valve and the fourth regulating valve.

[0057] Here, the first regulating valve is the valve 1 in Figure 1 , the second regulating valve is the valve 2 in Figure 1 , the third regulating valve is the valve 3 in Figure 1 , the fourth regulating valve is the valve 4 in Figure 1 , the fifth regulating valve is the valve 5 in Figure 1 , the sixth regulating valve is the valve 6 in Figure 1 , the seventh regulating valve is the valve 7 in Figure 1 . The above seven regulating valves are all two-way valves, which can directly control the on-off state of the refrigerant flow path. In the current prior art solutions, four-way valves are mostly used. During the defrosting of the heat pump unit, the commutation adjustment of the four-way valve is more complex. In this valve, the two-way valve is used to replace the four-way valve, which can not only achieve the control during the defrosting of the heat pump unit, but also more easily adjust the on-off of each refrigerant flow path, improving the comfort during defrosting.

[0058] Among them, the plate heat exchanger in Figure 1 is the plate heat exchanger mentioned above. The driving plate heat exchanger is arranged in the electrical box (which is directly recorded as the electrical box in this Figure 1 ), and the fin in Figure 1 is the fin heat exchanger mentioned above.

[0059] The main purpose of setting the above multiple regulating valves in the present invention is to control the flow direction of the refrigerant, thereby realizing the transfer of heat, and further enabling the heat pump unit to operate in different working modes. Please refer to Figure 11 . In the present invention, the heat pump unit has seven working modes, namely single heating mode, single hot water heating mode, single cooling mode, heating and non-stop defrosting mode (that is, the single heating mode + non-stop defrosting in Figure 11 ), heating and heat recovery mode (that is, the heating mode + heat recovery for making hot water in the electrical box in Figure 11 ), making hot water and non-stop defrosting mode (that is, Figure 11The hot water production mode (non-stop defrosting) and the cooling and heat recovery mode (cooling mode + fin heat recovery hot water). Valves 1 to 7 respectively correspond to the first regulating valve to the seventh regulating valve in the previous text. From the appendix Figure 11 It can be clearly seen that in each working mode, the opening and closing states of the regulating valves are different. That is, through the setting of the above-mentioned multiple regulating valves, the present invention can reasonably close and open each regulating valve to control the working mode of the heat pump unit and realize the reasonable utilization of the ineffective heat in the above-mentioned fin heat exchanger and the driving plate heat exchanger.

[0060] Here, the driving plate heat exchanger is actually arranged in the electrical box. Therefore, in the present invention, in the above appendix Figures 1 to 8 it is directly described with the electrical box and does not directly point out the driving plate heat exchanger.

[0061] Next, in combination with appendix Figure 2 to appendix 8, and appendix Figure 12 , the working modes of the present invention will be described. It should be noted that in appendix Figure 2 to appendix Figure 8 , the arrow indicates the refrigerant flow direction, the thick solid line represents the air conditioner hot water flow path, the thick dashed line (with a smaller interval) represents the fin defrosting water flow path, the thick dashed line (with a larger interval) represents the hot water production flow path, and the un-bolded dashed line represents the cooling water flow path.

[0062] Please refer to Figure 2 and appendix Figure 12 . In the present invention, the heat pump unit has a single heating mode. In the single heating mode, the sixth regulating valve and the seventh regulating valve are opened, and the water-cooled heat exchange tubes in the plate heat exchanger and the driving plate heat exchanger release heat, while the refrigerant-air heat exchange tubes in the fin heat exchanger absorb heat.

[0063] Appendix Figure 2 records the refrigerant flow direction in this single heating mode, and appendix Figure 12 records the heat absorption and heat release states of each heat exchange component in this single heating mode. Combining this appendix Figure 2 and appendix Figure 12 it can be seen that in this single heating mode, through the control of the sixth regulating valve and the seventh regulating valve, the present invention can make the fin heat exchanger absorb heat from the air and then release heat to the plate heat exchanger to produce hot water and release heat to the room, thus realizing the single heating mode.

[0064] That is, the present invention can control the refrigerant and heat transfer through the control of the above-mentioned regulating valves to realize the above single heating mode for releasing heat to the room.

[0065] Please refer to Figure 5 and appendix Figure 12, in the present invention, the heat pump unit has a single hot water mode. In the single hot water mode, the first regulating valve, the third regulating valve, and the fifth regulating valve are opened. The water-cooled heat exchange tubes in the plate heat exchanger and the drive plate heat exchanger release heat, and the refrigerant-air heat exchange tubes in the fin heat exchanger absorb heat.

[0066] Appendix Figure 5 records the flow direction of the refrigerant in this single hot water mode. Appendix Figure 12 records the heat absorption and heat release states of each heat exchange component in this single hot water mode. Combining this appendix Figure 5 and appendix Figure 12 it can be seen that in this single hot water mode, the present invention opens the first regulating valve, the third regulating valve, the fifth regulating valve and the hot water water pump, so that the hot water in the hot water tank first passes through the water-cooled heat exchange tubes in the drive plate radiator for preheating, then passes through the plate heat exchanger for reheating, and then returns to the hot water tank. It can use the water-cooled heat exchange tubes of the drive plate radiator to produce hot water for free and ensure good heat dissipation of the drive plate;

[0067] Here, the drive plate radiator is arranged in the electrical box. When the electrical box works, there will be 5% - 8% of ineffective heat generation in the drive plate, which will be dissipated into the air through the air-cooled radiator. After the above control by the present invention, the heat of this part can be obtained through the heat exchange between the water-cooled heat exchange tubes and the air-cooled radiator, and then through the control of the regulating valve, this part of heat is used to produce hot water. It not only ensures the reuse of this part of ineffective heat, but also ensures good heat dissipation of the drive plate itself.

[0068] Please refer to Figure 7 and appendix Figure 12 , in the present invention, the heat pump unit has a single cooling mode. In the single cooling mode, the sixth regulating valve and the seventh regulating valve are opened. The plate heat exchanger absorbs heat, and the refrigerant-air heat exchange tubes in the fin heat exchanger and the water-cooled heat exchange tubes in the drive plate heat exchanger release heat.

[0069] Appendix Figure 7 records the flow direction of the refrigerant in this single cooling mode. Appendix Figure 12 records the heat absorption and heat release states of each heat exchange component in this single cooling mode. Combining this appendix Figure 7 and appendix Figure 12 it can be seen that in this single cooling mode, the present invention controls the air conditioning water pump to absorb heat from the plate heat exchanger by opening the sixth regulating valve and the seventh regulating valve, to produce cold water for cooling the room, and to release heat to the air through the fins;

[0070] That is to say, the present invention can form a complete cooling circuit through the control of the above regulating valves, connect the air conditioning water pump and the plate heat exchanger for heat exchange, achieve the purpose of producing cold water and cooling the room, and ensure the implementation of the single cooling mode.

[0071] Please refer to Figure 3 、 Figure 4 、and the attached Figure 12 , the heat pump unit in the present invention also has a heating and non-stop defrosting mode, and a heating and heat recovery mode;

[0072] And in the heating and non-stop defrosting mode, the second regulating valve, the fourth regulating valve, the sixth regulating valve, and the seventh regulating valve are opened. The water-cooled heat exchange tubes in the plate heat exchanger and the drive plate heat exchanger release heat, and the refrigerant-air heat exchange tubes and the refrigerant-water heat exchange tubes in the fin heat exchanger absorb heat;

[0073] In the heating and heat recovery mode, the first regulating valve, the fourth regulating valve, the sixth regulating valve, and the seventh regulating valve are opened. The water-cooled heat exchange tubes in the plate heat exchanger and the drive plate heat exchanger release heat, and the refrigerant-air heat exchange tubes in the fin heat exchanger absorb heat.

[0074] Attached Figure 3 records the flow direction of the refrigerant in the heating and non-stop defrosting mode, and attached Figure 4 records the flow direction of the refrigerant in the heating and heat recovery mode, and attached Figure 12 records the heat absorption and heat release states of each heat exchange component in the heating and non-stop defrosting mode and the heating and heat recovery mode. Combining with attached Figure 3 and attached Figure 12 it can be seen that when the environmental temperature is relatively low and the fin heat exchanger of the heat pump unit is frosted and affects heat exchange, the present invention can, on the basis of the single heating mode, further open the second regulating valve, the fourth regulating valve, and the hot water pump, so that the hot water in the hot water tank passes through the water heat exchange tubes in the fin heat exchanger and releases heat to the fin heat exchanger, melting the frost on the fin heat exchanger. Then, after the hot water releases heat, it can absorb heat through the water-cooled heat exchange tubes of the drive plate heat exchanger and finally return to the hot water tank. Under this control, there is no need to perform commutation control through the four-way valve, and uninterrupted heating can be achieved, improving the comfort of user use. At the same time, the originally ineffective heat generated by the drive plate heat exchanger is utilized, improving the utilization rate of heat;

[0075] Combining with attached Figure 4 and attached Figure 12 it can be seen that in the single heating mode, when there is no need to defrost and hot water needs to be produced, on the basis of the original single heating mode, the first regulating valve, the fourth regulating valve, and the hot water pump are opened, so that the hot water absorbs heat through the water-cooled heat exchange tubes of the drive plate heat exchanger and returns to the hot water tank to realize free production of hot water, and good heat dissipation of the drive plate can be ensured. Under this control, the present invention can reasonably utilize the ineffective heat dissipated by the drive plate heat exchanger, release heat to the hot water tank to realize the function of producing hot water, and utilize the originally ineffective heat generated by the drive plate heat exchanger, improving the utilization rate of heat.

[0076] Please refer to Figure 6 andFigure 12 In the present invention, the heat pump unit also has a hot water production and non-stop defrosting mode. In the hot water production and non-stop defrosting mode, the second regulating valve, the third regulating valve, and the fifth regulating valve are opened, and the water-cooled heat exchange tubes in the plate heat exchanger and the driving plate heat exchanger release heat, while the refrigerant-air heat exchange tubes and the refrigerant-water heat exchange tubes in the fin heat exchanger absorb heat.

[0077] Appendix Figure 6 records the flow direction of the refrigerant in the hot water production and non-stop defrosting mode, and Appendix Figure 12 records the heat absorption and heat release states of each heat exchange component in the hot water production and non-stop defrosting mode. Combining this Appendix Figure 6 and Appendix Figure 12 it can be seen that when defrosting is required in the single hot water production mode of the present invention, the second regulating valve, the third regulating valve, the fifth regulating valve, and the hot water pump are additionally opened, so that the hot water in the hot water tank passes through the water heat exchange tubes in the fin heat exchanger to release heat to the fin heat exchanger, melting the frost on the fin heat exchanger. Then, after releasing heat, the hot water can absorb heat through the water-cooled heat exchange tubes of the driving plate heat exchanger and finally return to the hot water tank. Under this control, there is no need to perform commutation control through the four-way valve, which can achieve uninterrupted heating, improve the comfort of user use, and at the same time utilize the original ineffective heat generation of the driving plate heat exchanger, improving the utilization rate of heat.

[0078] Please refer to Figure 8 and Figure 12 In the present invention, the heat pump unit also has a refrigeration and heat recovery mode. In the refrigeration and heat recovery mode, the second regulating valve, the fourth regulating valve, the sixth regulating valve, and the seventh regulating valve are opened, the plate heat exchanger absorbs heat, and the refrigerant-air heat exchange tubes, the refrigerant-water heat exchange tubes in the fin heat exchanger, and the water-cooled heat exchange tubes in the driving plate heat exchanger release heat.

[0079] Appendix Figure 8 records the flow direction of the refrigerant in the refrigeration and heat recovery mode, and Appendix Figure 12 records the heat absorption and heat release states of each heat exchange component in the refrigeration and heat recovery mode. Combining this Appendix Figure 8 and Appendix Figure 12 it can be seen that on the basis of the original single refrigeration mode of the present invention, the second regulating valve, the fourth regulating valve, and the hot water pump are opened, so that after passing through the hot water pump, the hot water absorbs heat from the plate heat exchanger to produce cold water for indoor cooling and releases heat to the fin heat exchanger. The hot water pump heats the water in the hot water tank through the refrigerant-water heat exchange tubes of the fin heat exchanger, and then returns to the hot water production tank after being heated again through the water heat exchange tubes of the driving plate heat exchanger. That is, under this setting, the present invention can utilize the original ineffective heat dissipation in the fin heat exchanger and the driving plate heat exchanger to produce hot water for free.

[0080] Here, the driver board radiator is installed in the electrical box. When the electrical box is working, there will be 5% - 8% of ineffective heat generated by the driver board, which will be dissipated into the air through the air-cooled radiator. When the heat pump unit is in the refrigeration mode, the heat pump unit dissipates heat to the air through the outdoor fins, and there is also a part of ineffective heat loss. This setting of the present invention is to utilize these two parts of originally ineffective heat to produce hot water, achieving the rational utilization of the ineffective heat in the above-mentioned fin heat exchanger and driver board heat exchanger.

[0081] Based on the above settings, it can be seen that the present invention has at least the following beneficial effects compared with the prior art:

[0082] In the present invention, the fin heat exchanger has a refrigerant-air heat exchange tube serving as the first heat exchange part and a refrigerant-water heat exchange tube serving as the second heat exchange part. The driver board heat exchanger has an air-cooled radiator serving as the first heat exchange part and a water-cooled heat exchange tube serving as the second heat exchange part. Heat exchange can be carried out between the above-mentioned first heat exchange part and the second heat exchange part, enabling the present invention to utilize the heat loss of the driver board heat exchanger and the heat loss of the fin heat exchanger. At the same time, with the control of the regulating valve, the present invention can use the heat loss of the above-mentioned driver board heat exchanger and the heat loss of the fin heat exchanger to produce hot water and heat the air conditioning system, and use the hot water in the hot water tank and the heat loss of the driver board heat exchanger for defrosting, improving the comfort during defrosting, and realizing the comprehensive management and utilization of multiple heat sources in the heat pump unit in three different modes, namely the refrigeration mode, the heating mode, and the hot water production mode.

[0083] The present invention also proposes an air conditioning system having the above-mentioned heat pump unit.

[0084] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A heat pump unit, characterized in that, It includes a refrigerant flow path, and a plurality of heat exchange components and regulating valves disposed on the refrigerant flow path and capable of adjusting the working mode of the heat pump unit; At least one group of the heat exchange components consists of a first heat exchange part and a second heat exchange part, and heat exchange can be carried out between the first heat exchange part and the second heat exchange part.

2. The heat pump unit according to claim 1, wherein, The heat exchange components include: a plate heat exchanger, a fin heat exchanger, and a driving plate heat exchanger; Among them, the plate heat exchanger is a refrigerant-water heat exchanger; The fin heat exchanger has a refrigerant-air heat exchange tube serving as the first heat exchange part and a refrigerant-water heat exchange tube serving as the second heat exchange part, and the refrigerant-air heat exchange tube and the refrigerant-water heat exchange tube are connected in series on the same fin; The driving plate heat exchanger has an air-cooled radiator serving as the first heat exchange part and a water-cooled heat exchange tube serving as the second heat exchange part, and both the air-cooled radiator and the water-cooled heat exchange tube are connected to the driving plate for heat exchange.

3. The heat pump unit according to claim 2, characterized in that, The regulating valves include a first regulating valve connected between the hot water pump and the driving plate heat exchanger, a second regulating valve passing through the fin heat exchanger and connected between the hot water pump and the driving plate heat exchanger, a third regulating valve and a fourth regulating valve connected in series between the hot water tank and the plate heat exchanger, a sixth regulating valve connected between the air conditioner indoor unit and the plate heat exchanger, a seventh regulating valve connected between the air conditioner pump and the plate heat exchanger, and a fifth regulating valve with one end connected between the plate heat exchanger and the sixth regulating valve and the other end connected between the hot water tank and the fourth regulating valve. The driving plate heat exchanger is also connected between the third regulating valve and the fourth regulating valve.

4. The heat pump unit according to claim 3, characterized in that, The heat pump unit has a single heating mode. In the single heating mode, the sixth regulating valve and the seventh regulating valve are opened, the water-cooled heat exchange tubes in the plate heat exchanger and the driving plate heat exchanger release heat, and the refrigerant-air heat exchange tube in the fin heat exchanger absorbs heat.

5. The heat pump unit according to claim 3, characterized in that, The heat pump unit has a single hot water heating mode. In the single hot water heating mode, the first regulating valve, the third regulating valve, and the fifth regulating valve are opened, the water-cooled heat exchange tubes in the plate heat exchanger and the driving plate heat exchanger release heat, and the refrigerant-air heat exchange tube in the fin heat exchanger absorbs heat.

6. The heat pump unit according to claim 3, characterized in that, The heat pump unit has a single cooling mode. In the single cooling mode, the sixth regulating valve and the seventh regulating valve are opened, the plate heat exchanger absorbs heat, and the refrigerant-air heat exchange tube in the fin heat exchanger and the water-cooled heat exchange tube in the driving plate heat exchanger release heat.

7. The heat pump unit according to claim 4, characterized in that, The heat pump unit also has a heating and non-stop defrosting mode, and a heating and heat recovery mode; And in the heating and non-stop defrosting mode, the second regulating valve, the fourth regulating valve, the sixth regulating valve, and the seventh regulating valve are opened, the water-cooled heat exchange tubes in the plate heat exchanger and the driving plate heat exchanger release heat, and the refrigerant-air heat exchange tube and the refrigerant-water heat exchange tube in the fin heat exchanger absorb heat; In the heating and heat recovery mode, the first regulating valve, the fourth regulating valve, the sixth regulating valve, and the seventh regulating valve are opened, the water-cooled heat exchange tubes in the plate heat exchanger and the driving plate heat exchanger release heat, and the refrigerant-air heat exchange tube in the fin heat exchanger absorbs heat.

8. The heat pump unit according to claim 5, characterized in that, The heat pump unit further has a hot water production and non-stop defrosting mode. In the hot water production and non-stop defrosting mode, the second regulating valve, the third regulating valve, and the fifth regulating valve are opened. The water-cooled heat exchange tubes in the plate heat exchanger and the drive plate heat exchanger release heat, and the refrigerant-air heat exchange tubes and the refrigerant-water heat exchange tubes in the fin heat exchanger absorb heat.

9. The heat pump unit according to claim 6, characterized in that, The heat pump unit further has a cooling heat recovery mode. In the cooling heat recovery mode, the second regulating valve, the fourth regulating valve, the sixth regulating valve, and the seventh regulating valve are opened. The plate heat exchanger absorbs heat, and the refrigerant-air heat exchange tubes, the refrigerant-water heat exchange tubes in the fin heat exchanger, and the water-cooled heat exchange tubes in the drive plate heat exchanger release heat.

10. An air conditioning system, characterized in that, The air conditioning system has the heat pump unit according to any one of claims 1 to 9.

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