Heat pump equipment and hot water heating system

Abstract

The utility model discloses heat pump equipment and a hot water heating system, and belongs to the technical field of heat pumps. The heat pump equipment comprises a box body, a functional part, a heat pump assembly and a fan, the box body is provided with an inner cavity, and an air inlet and an air outlet are formed in the top of the box body; the heat pump assembly comprises a compressor, an air side heat exchanger and a water side heat exchanger, an inner cavity of the box body is divided into an air inlet cavity and an air outlet cavity through the air side heat exchanger and the functional part, and the air side heat exchanger is located below the functional part. The functional part is installed between the air side heat exchanger and the top of the box body, so that the distance between the air side heat exchanger and the air inlet can be increased, enough space is formed between the air side heat exchanger and the air inlet, the speed of a wind field flowing through the air side heat exchanger is more uniform, static pressure transition is stable, and the service life of the wind field is prolonged. The air inlet speed difference between the upper half and the lower half of the air side heat exchanger is reduced, and heat exchange efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat pumps, in particular to heat pump equipment and a hot water heating system. Background Art

[0002] In the related art, the top cover of the air source heat pump directly matches the top of the heat exchanger on the heat source side. The air enters the unit from the air inlet and then flows through the heat exchanger on the heat source side for heat exchange. The form of matching between the heat exchanger on the heat source side and the top cover of the unit, coupled with the obstruction of some parts on the air inlet side, makes the wind speed of air passing through the heat exchanger on the heat source side uneven, resulting in different heat exchange efficiencies in different areas of the heat exchanger on the heat source side, poor heat exchange in the upper part and good heat exchange in the lower part, which reduces the heat exchange efficiency. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a heat pump device, which can effectively improve the wind field uniformity of air passing through the air side heat exchanger and improve the heat exchange efficiency.

[0004] The utility model also provides a hot water heating system comprising the heat pump device.

[0005] According to the heat pump device of the first aspect embodiment of the utility model, it includes: a box body, which has an inner cavity, and the top wall of the box body is provided with an air inlet and an air outlet; a functional component, which is connected to the box body and located in the inner cavity; a heat pump assembly, which is connected to the box body and located in the inner cavity, and the heat pump assembly includes a compressor, an air-side heat exchanger and a water-side heat exchanger, and a fan, which is connected to the box body; wherein the air-side heat exchanger is spaced apart from the top of the box body, the functional component is located between the air-side heat exchanger and the top wall, the air-side heat exchanger and the functional component together separate the inner cavity into an air inlet cavity and an air outlet cavity, the air inlet cavity is connected to the air inlet, the air outlet cavity is connected to the air outlet, the compressor and the water-side heat exchanger are located in the air inlet cavity, and the fan is located in the air outlet cavity.

[0006] The heat pump device according to the embodiment of the utility model has at least the following beneficial effects:

[0007] The heat pump device of the embodiment divides the inner cavity of the box into an air inlet cavity and an air outlet cavity through the air side heat exchanger and the functional components. The air side heat exchanger is located below the functional components. By installing the functional components between the air side heat exchanger and the top of the box, the distance between the air side heat exchanger and the air inlet can be increased, so that there is enough space between the air side heat exchanger and the air inlet, and the speed of the wind field flowing through the air side heat exchanger is more uniform, thereby making the static pressure transition smooth, reducing the difference in air inlet speed between the upper and lower parts of the air side heat exchanger, and improving the heat exchange efficiency.

[0008] According to some embodiments of the utility model, the functional component is an electrical control box or a partition, a top cover is provided on the top of the box body, the air inlet and the air outlet are provided on the top cover, and the electrical control box or the partition is connected between the top cover and the air side heat exchanger.

[0009] According to some embodiments of the present invention, the height between the top of the air-side heat exchanger and the top cover is greater than or equal to 10% of the height of the box body and less than or equal to 50% of the height of the box body.

[0010] According to some embodiments of the utility model, the functional component is the electric control box, the electric control box is provided with a radiator, and the radiator is provided with cooling fins on a side facing the air inlet cavity.

[0011] According to some embodiments of the utility model, the heat pump assembly also includes a four-way valve and a throttling component, the compressor, the air-side heat exchanger, the water-side heat exchanger, the throttling component and the four-way valve are connected to form a refrigerant circulation flow path, and the four-way valve and the throttling component are located in the air inlet chamber.

[0012] According to some embodiments of the utility model, the box body includes a back plate, a bracket is provided on the side of the back plate facing the air inlet chamber, the water side heat exchanger is connected to the bracket, and the four-way valve and the throttling component are respectively connected to the water side heat exchanger through refrigerant pipelines.

[0013] According to some embodiments of the present utility model, the box body includes a chassis, and the air-side heat exchanger is fixedly connected to the chassis and is arranged perpendicular to the back plate.

[0014] According to some embodiments of the present utility model, the heat pump device further comprises:

[0015] A water pump is disposed in the inner cavity, and the water pump is connected to a water inlet or a water outlet of the water-side heat exchanger;

[0016] Wherein, the box body includes a chassis, and the water pump and the compressor are arranged side by side along the front-rear direction of the box body and are respectively fixedly connected to the chassis.

[0017] According to some embodiments of the utility model, the fan is a centrifugal fan, the box body includes a chassis, the centrifugal fan is fixedly connected to the chassis, the inlet of the centrifugal fan is arranged toward the air side heat exchanger, and the outlet of the centrifugal fan is connected to the air outlet.

[0018] According to some embodiments of the present invention, the air-side heat exchanger is a fin heat exchanger or a microchannel heat exchanger, and the water-side heat exchanger is a plate heat exchanger, a shell and tube heat exchanger or a sleeve heat exchanger.

[0019] The hot water heating system according to the second embodiment of the utility model includes the heat pump device described in the first embodiment.

[0020] The hot water heating system according to the embodiment of the utility model has at least the following beneficial effects:

[0021] The hot water heating system adopts the heat pump equipment of the first aspect embodiment, which can reduce the difference in wind speed between the upper and lower parts of the air side heat exchanger, improve the heat exchange efficiency, thereby improving the heating efficiency of the hot water heating system, which is beneficial to reducing the energy consumption of the hot water heating system.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0024] Figure 1 It is a structural schematic diagram of an air source heat pump in the related art;

[0025] Figure 2 This is a schematic diagram of the three-dimensional structure of a heat pump device according to an embodiment of the utility model;

[0026] Figure 3 This is a front structural schematic diagram of a heat pump device according to an embodiment of the utility model;

[0027] Figure 4 This is a structural schematic diagram of a heat pump assembly and a hydraulic module according to an embodiment of the utility model;

[0028] Figure 5 for Figure 2 The enlarged schematic diagram of point A in the middle;

[0029] Figure 6 A schematic diagram of the top view of a heat pump device according to an embodiment of the utility model;

[0030] Figure 7 It is a schematic diagram of marking speed measurement points of a heat exchanger on the heat source side in the related art;

[0031] Figure 8 This is a schematic diagram of speed measurement point markings of the air side heat exchanger in the embodiment of the utility model;

[0032] Fig. 9 The wind speed comparison data of the speed measurement point when the fan is tested at a speed of 800 rpm;

[0033] Fig.10The wind speed comparison data is for the test points when the fan is tested at a speed of 1000 rpm.

[0034] Figure Number:

[0035] Box body 100; top cover 110; air inlet 111; air outlet 112; left side panel 120; right side panel 130; bottom plate 140; back plate 150; inner cavity 160; air inlet cavity 161; air outlet cavity 162;

[0036] Heat pump assembly 200; compressor 210; air side heat exchanger 220; water side heat exchanger 230; throttling component 240; four-way valve 250;

[0037] Fan 300; volute 310; wind wheel 320;

[0038] Functional component 400; electric control box 410; radiator 411;

[0039] Hydraulic module 500; water pump 510; water inlet pipe 520; water outlet pipe 530;

[0040] Heat pump device 1000. DETAILED DESCRIPTION

[0041] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0042] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0043] In the description of the utility model, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0044] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0045] In the related art, the top cover of the air source heat pump directly cooperates with the top of the heat exchanger 30 on the heat source side, dividing the unit into two left and right cavities. The fan 40 is located in the left cavity, and the compressor 50, the plate heat exchanger 60 and the electric control box 70 are located in the right cavity. The air enters the unit from the air inlet 10, flows through the heat exchanger 30 on the heat source side for heat exchange, and is then discharged from the air outlet 20. Figure 1 The figure shows the principle diagram of the air source heat pump in the related art. Figure 1 The arrow in the middle shows the direction of air flow.

[0046] Due to the matching form of the heat exchanger 30 on the heat source side and the top cover of the unit, and the blocking of some parts on the air inlet side, the wind speed of air passing through the heat exchanger 30 on the heat source side is uneven, resulting in different heat exchange efficiencies in different areas of the heat exchanger 30 on the heat source side, poor heat exchange in the upper part, and good heat exchange in the lower part. The following disadvantages exist: the heating capacity and energy efficiency of the unit are relatively low; the heat exchanger 30 on the heat source side is prone to uneven frost at low ambient temperatures, and the defrost control logic is prone to misjudgment, and defrosting is triggered only when the thickness of the upper frost is too large; and the defrost exit logic function is prone to misjudgment, and defrosting is exited before the upper frost layer is completely melted. In addition, there is a cold bridge on the top cover of the unit, and condensation is prone to occur on the surface.

[0047] The first embodiment of the utility model proposes a heat pump device 1000, also known as an air source heat pump, which can increase the distance between the air side heat exchanger 220 and the air inlet 111, so that there is enough space between the air side heat exchanger 220 and the air inlet 111, so that the speed of the wind field flowing through the air side heat exchanger 220 is more uniform, thereby making the static pressure transition smooth, reducing the difference in the inlet wind speed between the upper and lower parts of the air side heat exchanger 220, and improving the heat exchange efficiency. It is suitable for hot water heating systems, specifically for providing domestic hot water and heating hot water. Figures 2 to 10 1 and 2 , heat pump device 1000 is described.

[0048] Reference Figure 2 and Figure 3As shown, in the embodiment of the utility model, the heat pump device 1000 includes a box body 100, a heat pump assembly 200 and a fan 300, wherein an inner cavity 160 is arranged inside the box body 100, the box body 100 is the shell of the entire heat pump device 1000, the heat pump assembly 200 and the fan 300 are both installed in the inner cavity 160, and the box body 100 can provide protection for the heat pump assembly 200 and the fan 300. An air inlet 111 and an air outlet 112 are arranged on the top of the box body 100, the air inlet 111 is close to the left side of the box body 100, and the air outlet 112 is close to the right side of the box body 100, the air inlet 111 is used to connect the suction duct (not shown in the drawings), and the air outlet 112 is used to connect the exhaust duct (not shown in the drawings), and the fan 300 sucks outdoor air into the heat pump device 1000 through the suction duct when it is running, and the air that has completed the heat exchange is discharged through the exhaust duct.

[0049] The heat pump assembly 200 includes a compressor 210, an air-side heat exchanger 220 and a water-side heat exchanger 230. The air-side heat exchanger 220 is also called a heat source-side heat exchanger, and the water-side heat exchanger 230 is also called a user-side heat exchanger. When the heat pump device 1000 is running, the compressor 210 compresses the refrigerant into a high-temperature and high-pressure gas, and outputs it to the water-side heat exchanger 230, and uses the water-side heat exchanger 230 to exchange heat with water, thereby producing hot water for users to use; after throttling and reducing pressure, the refrigerant is input into the air-side heat exchanger 220, and uses the air-side heat exchanger 220 to exchange heat with air, thereby obtaining a low-temperature gaseous refrigerant, and returns to the compressor 210 to enter the next cycle. The heat pump device 1000 can be installed in the equipment room of the user's home or on the wall of the corridor. After installation, it is connected to the outside of the user's room through the suction duct and the exhaust duct; the user can obtain domestic hot water and heating hot water from the water outlet pipe 530 of the water side heat exchanger 230; the water outlet pipe 530 can also be connected to the water tank to store the hot water in the water tank for user use.

[0050] Reference Figure 2 and Figure 3As shown, it can be understood that the box body 100 includes a front plate (not shown in the drawings), a back plate 150, a left side plate 120, a right side plate 130, a top cover 110 and a bottom plate 140, which are connected by buckles or bolts to form the box body 100, and an inner cavity 160 is formed inside the box body 100. The compressor 210, the air side heat exchanger 220 and the water side heat exchanger 230 are installed in the inner cavity 160, and the air inlet 111 and the air outlet 112 are set on the top cover 110. In an embodiment of the utility model, the heat pump equipment 1000 also includes a functional component 400, which is installed at the top position of the inner cavity 160, and the air side heat exchanger 220 is installed below the functional component 400. The air side heat exchanger 220 and the functional component 400 are both located in the middle position of the inner cavity 160. The air side heat exchanger 220 and the functional component 400 jointly separate the inner cavity 160 into an air inlet chamber 161 and an air outlet chamber 162, wherein the air inlet chamber 161 is connected to the air inlet port 111, and the air outlet chamber 162 is connected to the air outlet port 112. The compressor 210 and the water side heat exchanger 230 are installed in the air inlet chamber 161, and the fan 300 is installed in the air outlet chamber 162.

[0051] Reference Figure 3 As shown, it can be understood that the functional component 400 of the embodiment is an electrical control box 410, which is installed between the top of the air-side heat exchanger 220 and the top cover 110 to separate the air-side heat exchanger 220 from the top cover 110. That is, the air-side heat exchanger 220 does not directly cooperate with the top cover 110 to separate the inner cavity 160, but rather utilizes the air-side heat exchanger 220 to cooperate with the electrical control box 410 to separate the inner cavity 160 into an air inlet cavity 161 and an air outlet cavity 162. Since the air-side heat exchanger 220 is separated from the top cover 110, the distance between the air-side heat exchanger 220 and the air inlet 111 can be increased, so that there is enough space between the air-side heat exchanger 220 and the air inlet 111. When the air enters the air inlet chamber 161 from the air inlet 111, it passes through the above-mentioned space and then enters the air-side heat exchanger 220 for heat exchange, which plays a role of transition buffer, making the speed of the wind field flowing through the air-side heat exchanger 220 more uniform, thereby making the static pressure transition smooth, reducing the difference in wind speed between the upper and lower parts of the air-side heat exchanger 220, and thus improving the heat exchange efficiency. Figure 3 The direction indicated by the arrow is the direction of air flow.

[0052] Relative to Figure 1The related technology shown in the figure shows that the embodiment of the utility model can improve the heat exchange efficiency of the heat pump device 1000, thereby increasing the heating capacity and reducing energy consumption; the air-side heat exchanger 220 is not prone to uneven frost formation at low ambient temperatures, and the defrosting control and exit logic judgment are more accurate, avoiding the problem of entering defrosting when the frost on the upper part of the air-side heat exchanger 220 is too thick, and exiting defrosting when the upper frost layer is not completely melted. In addition, since the air-side heat exchanger 220 is separated from the top cover 110, the top cover 110 will not generate a cold bridge, so condensation is not easy to form on its surface.

[0053] It should be pointed out that the utility model inventor has tested and found that under the condition of frosting on the surface of the air side heat exchanger 220, the upper 1 / 3 area of ​​the air side heat exchanger 220 in the related art frosts faster, and the air side heat exchanger 220 is unevenly frosted as a whole in the later stage, showing thicker on the top and thinner on the bottom. After using the solution of the embodiment of the utility model, the upper and lower parts of the air side heat exchanger 220 are evenly frosted, and there will be no misjudgment when the unit enters or exits defrosting.

[0054] It should be noted that, in some embodiments, the air-side heat exchanger 220 is a finned heat exchanger, which uses fins to increase the contact area to speed up heat exchange. As the distance between the air-side heat exchanger 220 and the air inlet 111 increases, the speed of the wind field flowing through the finned heat exchanger is more uniform, which effectively reduces the noise of the wind field impacting the fins, and has a noise reduction effect. Of course, the air-side heat exchanger 220 is not limited to a finned heat exchanger, and can also be a microchannel heat exchanger, which has the advantages of good heat exchange performance and energy saving.

[0055] It is understandable that in some embodiments, the water-side heat exchanger 230 is a plate heat exchanger with high heat exchange efficiency and compact structure, which is conducive to saving installation space. Since the compressor 210 and the plate heat exchanger are both located in the air inlet chamber 161, the compressor 210 and the plate heat exchanger will generate heat during operation, and the generated heat will be reused for heat exchange by the air-side heat exchanger 220, thereby further improving the heat exchange efficiency and being more conducive to reducing energy consumption. Of course, the water-side heat exchanger 230 is not limited to a plate heat exchanger, and can also be a heat exchanger for exchanging refrigerant with water, such as a shell and tube heat exchanger, a sleeve heat exchanger, etc.

[0056] Specifically, refer to Figure 3 As shown, when the fan 300 is working, negative pressure is generated in the air inlet chamber 161, and air enters the air inlet chamber 161 from the air inlet 111. The heat generated by the compressor 210, the plate heat exchanger and other components is exchanged into the fresh air at this time; the air enters the air side heat exchanger 220 to the left, and exchanges heat with the refrigerant in the pipe through the aluminum foil; the exchanged air is discharged from the unit through the air outlet chamber 162 by the fan 300, thereby completing a heat exchange.

[0057] Reference Figure 3 and Figure 4As shown, the heat pump assembly 200 also includes a four-way valve 250 and a throttling component 240. The compressor 210, the air side heat exchanger 220, the water side heat exchanger 230, the throttling component 240 and the four-way valve 250 are connected to form a refrigerant circulation flow path. The four-way valve 250 and the throttling component 240 are both installed in the air inlet chamber 161. Specifically, the refrigerant pipeline is a copper tube, the inlet of the compressor 210 is connected to the port B of the four-way valve 250 through the copper tube, and the outlet of the compressor 210 is connected to the port E of the four-way valve 250 through the copper tube; the port D of the four-way valve 250 is connected to the refrigerant inlet of the water-side heat exchanger 230 through the copper tube; the refrigerant outlet of the water-side heat exchanger 230 is connected to the refrigerant inlet of the throttling component 240 through the copper tube; the refrigerant outlet of the throttling component 240 is connected to the refrigerant inlet of the air-side heat exchanger 220 through the copper tube; the refrigerant outlet of the air-side heat exchanger 220 is connected to the port C of the four-way valve 250 through the copper tube, wherein the port B of the four-way valve 250 is connected to the port C, and the port D is connected to the port E, thereby forming a refrigerant circulation flow path. Among them, the throttling component 240 can be a capillary tube, an expansion valve, etc., which is selected according to the actual application requirements.

[0058] Reference Figure 3 As shown, the electrical control box 410 is installed on the top of the air-side heat exchanger 220, and the sum of the heights of the electrical control box 410 and the air-side heat exchanger 220 is equal to the height of the inner cavity 160, wherein the bottom of the air-side heat exchanger 220 is fixedly connected to the chassis 140, the top is connected to the electrical control box 410, and the side of the air-side heat exchanger 220 facing the air outlet cavity 162 is connected to the fan 300, and the overall structure is firm and reliable.

[0059] It should be pointed out in particular that the height between the top of the air-side heat exchanger 220 and the top cover 110 must be greater than or equal to 10% of the height of the box body 100. This will significantly improve the heat exchange efficiency of the air-side heat exchanger 220. That is, when the above conditions are met, the speed of the wind field flowing through the air-side heat exchanger 220 is more uniform, which can make the static pressure transition smooth, reduce the difference in wind speed between the upper and lower parts of the air-side heat exchanger 220, and effectively improve the heat exchange efficiency.

[0060] For example, if the height of the box 100 is 0.5m, the height between the top of the air-side heat exchanger 220 and the top cover 110 needs to be greater than or equal to 0.05m, and the specific height may be 0.05m, 0.1m, 0.2m, etc. It can be understood that if the height between the top of the air-side heat exchanger 220 and the top cover 110 is less than 10% of the height of the box 100, the distance between the air-side heat exchanger 220 and the air inlet 111 is too small, which will lead to different heat exchange efficiencies in different areas of the air-side heat exchanger 220, poor heat exchange in the upper part, and good heat exchange in the lower part, thereby reducing the heat exchange efficiency.

[0061] Considering that when the size of the box 100 remains unchanged, the larger the distance between the air-side heat exchanger 220 and the top cover 110, the larger the size of the electric control box 410 needs to be, the cost will increase, and the smaller the air-side heat exchanger 220 is, the lower the heat exchange efficiency is, which reduces the performance of the heat pump device 1000. Therefore, in the embodiment, the height between the top of the air-side heat exchanger 220 and the top cover 110 must be less than or equal to 50% of the height of the box 100, that is, the height between the top of the air-side heat exchanger 220 and the top cover 110 is in the range of 10%-50% of the height of the box 100. For example, if the height of the box 100 is 0.5m, the height between the top of the air-side heat exchanger 220 and the top cover 110 can range from 0.05m to 0.25m, which can be selected according to the actual application requirements.

[0062] See the figure below for an explanation of the effect of improving heat exchange efficiency based on a wind speed test as a specific example.

[0063] Figure 7 is a schematic diagram of speed measurement point markings of the air side heat exchanger 220 in the related art, Figure 8 2 is a schematic diagram of the speed measurement point marking of the air side heat exchanger 220 in the embodiment of the utility model. It can be understood that there are 16 speed measurement points in the two examples, which are specifically distinguished by speed measurement points 1-16. Fig. 9 and Fig.10 As shown, the specific detected wind speed at the speed measurement point is shown in the form of an array table, where: Fig. 9 This is the comparison data of the fan 300 tested at a speed of 800 rpm. Fig. 9 The table on the left shows Figure 7 The wind speed test data corresponding to each speed measurement point in the table on the right shows Figure 8 The wind speed test data corresponding to each speed measurement point. Fig.10 This is the comparison data of the fan 300 tested at a speed of 1000 rpm. Fig.10 The table on the left shows Figure 7 The wind speed test data corresponding to each speed measurement point in the table on the right shows Fig.10 The wind speed test data corresponding to each speed measurement point.

[0064] For example, when the fan speed is 300 to 800 rpm, the Fig. 9 It can be understood from the two tables that: speed point 1 increases from 0.4m / s to 0.8m / s; speed point 2 increases from 0 to 1.6m / s; speed point 3 increases from 1m / s to 1.6m / s; speed point 4 increases from 0 to 1.8m / s, and the speed distribution of the entire wind field is uniform.

[0065] For example, when the fan speed is 1000rpm, the Fig.10From the two tables, we can understand that speed point 1 increases from 0 to 1.1m / s; speed point 2 increases from 0 to 1.9m / s; speed point 3 increases from 1.1m / s to 2.5m / s; speed point 4 remains consistent, and the speed distribution of the entire wind field is uniform.

[0066] It can be understood that the heat pump device 1000 of the embodiment of the utility model increases the distance between the air-side heat exchanger 220 and the air inlet 111, so that the speed of the wind field flowing through the air-side heat exchanger 220 is more uniform, the static pressure transition is smooth, and the difference in wind speed between the upper and lower parts of the air-side heat exchanger 220 is reduced, thereby effectively improving the heat exchange efficiency, significantly improving the heating amount per unit time, and having higher energy efficiency.

[0067] Reference Figure 2 and Figure 5 As shown, the electric control box 410 of the embodiment is provided with a power module (not shown in the drawings) and a radiator 411. The power module may be an intelligent power module or other power module. Since the power module generates a large amount of heat when working, the temperature of the power module can be reduced by the radiator 411. The radiator 411 is provided with heat dissipation fins, which is beneficial to improving the heat dissipation efficiency. Since the electric control box 410 is located at the top of the air-side heat exchanger 220, in order to recycle the heat generated by the electric control box 410, the heat dissipation fins are arranged toward the air inlet cavity 161, so that the heat of the heat dissipation fins can be exchanged into the air in the air inlet cavity 161, and enter the air-side heat exchanger 220 for heat exchange, further improving the heat exchange efficiency.

[0068] Reference Figure 5 As shown, it can be understood that the radiator 411 is arranged close to the air inlet 111, and the air entering from the air inlet 111 can contact the cooling fins and quickly take away the heat of the radiator 411, thereby improving the heat dissipation efficiency of the electric control box 410, making the operation of the electric control box 410 more stable and reducing the failure rate.

[0069] It should be noted that the functional component 400 is not limited to the electric control box 410, and may also be a partition (not shown in the drawings), that is, a partition is provided between the air side heat exchanger 220 and the top cover 110, and the partition cooperates with the air side heat exchanger 220 to separate the inner cavity 160 into an air inlet cavity 161 and an air outlet cavity 162. The size of the partition can be set according to the distance between the air side heat exchanger 220 and the top cover 110.

[0070] It is understandable that when a partition is used to separate the top cover 110 from the air-side heat exchanger 220, the electric control box 410 can be selectively installed at other positions of the inner cavity 160. In some embodiments, in order to recycle the heat generated by the electric control box 410, the electric control box 410 is installed in the air inlet cavity 161, and can be specifically fixed on the back plate 150 or the right side plate 130.

[0071] Reference Figure 4 As shown, the heat pump device 1000 of the embodiment of the utility model includes a hydraulic module 500, and the hydraulic module 500 includes a water pump 510, a water side heat exchanger 230, a water inlet pipe 520 and a water outlet pipe 530; the water inlet pipe 520 is used to connect to the water outlet joint of the external heating device (or water heater) through an external pipeline, so that the water in the external heating device (or water heater) can enter the heat pump device 1000 through the water inlet pipe 520; and the water outlet pipe 530 is used to connect to the water outlet joint of the external heating device (or water heater) through the external pipeline. The water inlet joint 1000 is connected to the external heating device (or water heater) so that the water heated by the heat pump device 1000 can flow back to the external heating device (or water heater) again; the water-side heat exchanger 230 is used to complete the heat exchange between water and the refrigerant. The water-side heat exchanger 230 is provided with a water flow pipeline and a refrigerant pipeline, wherein the two ends of the water flow pipeline are respectively connected to the water inlet pipe 520 and the water outlet pipe 530; the water pump 510 is connected to the water inlet end of the water-side heat exchanger 230 through the water inlet pipe 520. In some embodiments, the water pump 510 can also be selected to be connected to the water outlet end of the water-side heat exchanger 230, and the water pump 510 is specifically connected to the water outlet end of the water-side heat exchanger 230 through the water outlet pipe 530. The water pump 510 is connected in series with the water inlet pipe 520, the water flow pipeline and the water outlet pipe 530 to form a water flow path inside the heat pump device 1000, which is used to provide power to enable water to circulate between the water flow path and the external heating device (or water heater).

[0072] In some embodiments, a bracket (not shown in the drawings) is provided on one side of the back plate 150 of the housing 100 facing the air inlet chamber 161, and the water-side heat exchanger 230 is fixedly connected to the bracket to ensure that the installation structure of the water-side heat exchanger 230 is stable and reliable. The bracket matches the water-side heat exchanger 230, and its specific structure is selected according to the specific form of the water-side heat exchanger 230, which is not limited here.

[0073] Reference Figure 3 As shown, the air-side heat exchanger 220 is fixedly connected to the chassis 140 and is perpendicular to the back plate 150, which can effectively separate the inner cavity 160, making the space allocation of the air inlet cavity 161 and the air outlet cavity 162 more reasonable and more convenient to install. Of course, in some embodiments, the air-side heat exchanger 220 can also form a certain inclination angle with the back plate 150 to separate the inner cavity 160 into two cavities, and the specific inclination angle can be set according to the installation space requirements of the two cavities.

[0074] Reference Figure 3 and Figure 6As shown, the fan 300 of the embodiment is a centrifugal fan, which is fixedly connected to the chassis 140, the inlet of the centrifugal fan is arranged toward the air-side heat exchanger 220, and the outlet of the centrifugal fan is connected to the air outlet 112. Specifically, the centrifugal fan includes a volute 310 and a wind wheel 320 arranged in the volute 310, and the volute 310 is provided with an inlet and an outlet, wherein the inlet is toward the air-side heat exchanger 220, so that the air can enter the volute 310 from the inlet after heat exchange in the air-side heat exchanger 220. When the centrifugal fan is running, air is sucked from the inlet, and the air sucked by the centrifugal fan will flow through the air-side heat exchanger 220, which helps to improve the heat exchange efficiency of the air-side heat exchanger 220 and improve energy efficiency.

[0075] In the example of the utility model, the compressor 210, the air side heat exchanger 220 and the centrifugal fan are all mounted on the chassis 140; the electric control box 410 is mounted on the top of the air side heat exchanger 220; the air side heat exchanger 220 and the electric control box 410 together divide the entire inner cavity 160 into an air inlet cavity 161 and an air outlet cavity 162. The centrifugal fan is in the air outlet cavity 162, and the compressor 210, the water pump 510, the four-way valve 250, the throttling component 240, the water side heat exchanger 230 and the radiator 411 of the electric control box 410 are all in the air inlet cavity 161, which can effectively reuse the heat generated by the above components; the water pump 510 is located in front of the compressor 210 and is mounted on the chassis 140 through the water inlet pipe 520. The overall layout is reasonable and the structure is compact, which improves the heat exchange efficiency of the air side heat exchanger 220, and the heat generation of the heat pump device 1000 per unit time is significantly improved, thereby improving energy efficiency.

[0076] The second embodiment of the utility model further proposes a hot water heating system, including the heat pump device 1000 of the above embodiment. The hot water heating system adopts the heat pump device 1000 of the embodiment, which can reduce the difference in the air inlet speed between the upper half and the lower half of the air side heat exchanger 220, improve the heat exchange efficiency, thereby improving the heating efficiency of the hot water heating system, which is conducive to reducing the energy consumption of the hot water heating system. Users can obtain domestic hot water and heating hot water from the outlet pipe 530 of the water side heat exchanger 230; or the outlet pipe 530 can be connected to a water tank to store hot water in the water tank for users to use.

[0077] Since the hot water heating system adopts all the technical solutions of the heat pump device 1000 of the above embodiment, it has at least all the beneficial effects brought by the technical solutions of the above embodiment, which will not be repeated here.

[0078] Of course, the present invention is not limited to the above-mentioned embodiments, and technicians familiar with the field may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A heat pump device, characterized in that: include: The box body has an inner cavity, and the top wall of the box body is provided with an air inlet and an air outlet; A functional component connected to the box and located in the inner cavity; A heat pump assembly connected to the housing and located in the inner cavity, the heat pump assembly comprising a compressor, an air-side heat exchanger and a water-side heat exchanger; A fan connected to the box; Among them, the air-side heat exchanger is spaced apart from the top of the box body, the functional component is located between the air-side heat exchanger and the top wall, the air-side heat exchanger and the functional component together divide the inner cavity into an air inlet cavity and an air outlet cavity, the air inlet cavity is connected to the air inlet, the air outlet cavity is connected to the air outlet, the compressor and the water-side heat exchanger are located in the air inlet cavity, and the fan is located in the air outlet cavity.

2. The heat pump device according to claim 1, characterized in that: The functional component is an electric control box or a partition, a top cover is provided on the top of the box body, the air inlet and the air outlet are provided on the top cover, and the electric control box or the partition is connected between the top cover and the air side heat exchanger.

3. The heat pump device according to claim 2, characterized in that: The height between the top of the air-side heat exchanger and the top cover is greater than or equal to 10% of the height of the box body and less than or equal to 50% of the height of the box body.

4. The heat pump device according to claim 2, characterized in that: The functional component is the electric control box, the electric control box is provided with a radiator, and the radiator is provided with cooling fins on a side facing the air inlet cavity.

5. The heat pump device according to claim 1, characterized in that: The heat pump assembly also includes a four-way valve and a throttling component. The compressor, the air-side heat exchanger, the water-side heat exchanger, the throttling component and the four-way valve are connected to form a refrigerant circulation flow path. The four-way valve and the throttling component are located in the air inlet chamber.

6. The heat pump device according to claim 5, characterized in that: The box body includes a back plate, a bracket is provided on the side of the back plate facing the air inlet chamber, the water-side heat exchanger is connected to the bracket, and the four-way valve and the throttling component are respectively connected to the water-side heat exchanger through refrigerant pipelines.

7. The heat pump device according to claim 6, characterized in that: The box body comprises a bottom plate, and the air-side heat exchanger is fixedly connected to the bottom plate and is arranged perpendicular to the back plate.

8. The heat pump device according to claim 1, characterized in that: The heat pump device also includes: A water pump is disposed in the inner cavity, and the water pump is connected to a water inlet or a water outlet of the water-side heat exchanger; Wherein, the box body includes a chassis, and the water pump and the compressor are arranged side by side along the front-rear direction of the box body and are respectively fixedly connected to the chassis.

9. The heat pump device according to claim 1, characterized in that: The fan is a centrifugal fan, the box body includes a chassis, the centrifugal fan is fixedly connected to the chassis, the inlet of the centrifugal fan is arranged toward the air-side heat exchanger, and the outlet of the centrifugal fan is connected to the air outlet.

10. The heat pump device according to claim 1, characterized in that: The air-side heat exchanger is a fin-type heat exchanger or a microchannel heat exchanger, and the water-side heat exchanger is a plate-type heat exchanger, a shell-and-tube heat exchanger or a sleeve-and-tube heat exchanger.

11. A hot water heating system, characterized in that: A heat pump device comprising any one of claims 1 to 10.

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