Heat pump water heater and machine head assembly thereof

Abstract

The utility model provides a heat pump water heater and a machine head assembly thereof. The machine head assembly comprises a main body provided with a heat exchange air duct and a mounting cavity, the heat exchange air duct is provided with a first air opening and a second air opening, the mounting cavity is located outside the heat exchange air duct, a common wall is arranged between the mounting cavity and the heat exchange air duct, and the common wall is provided with a communicating hole; the electric control box is located in the installation cavity and installed at the communicating hole in a sealed mode, and the heat dissipation device faces the heat exchange air duct from the communicating hole; the fan assembly and the heat exchanger are both arranged in the heat exchange air duct, and the fan assembly is arranged to form an air beam flowing from one of the first air opening and the second air opening to the other one of the first air opening and the second air opening through the heat exchanger and the communicating hole. According to the scheme, sealing treatment does not need to be conducted between the bottom box and the cover body of the electric control box, and when refrigerant leaks, refrigerant combustion or refrigerant explosion does not occur in the electric control box.

Description

Technical Field

[0001] This application relates to, but is not limited to, the field of heat pump equipment technology, specifically to a heat pump water heater and its head assembly. Background Technology

[0002] For integrated variable frequency heat pump water heaters with side-inlet and side-outlet air intake and exhaust, the variable frequency control main board (control module includes the variable frequency control main board) generates a lot of heat. Usually, the front of the variable frequency control main board is designed with heat dissipation fins (radiator includes heat dissipation fins). The heat on the heat dissipation fins is carried away by the air duct, so as to achieve efficient heat dissipation of the variable frequency control main board.

[0003] For integrated variable frequency heat pump water heaters that use flammable and explosive refrigerants, when a refrigerant leak occurs inside the unit, if the refrigerant enters the control box and comes into contact with the ignition-prone electrical components on the variable frequency control mainboard, the refrigerant in the control box will be ignited by the powered ignition-prone electrical components when the refrigerant concentration in the control box reaches the combustion concentration threshold (when the fan assembly is not running, the leaked refrigerant is more likely to enter the control box, and the refrigerant concentration in the control box is more likely to reach the combustion concentration threshold). This can lead to combustion or explosion. Therefore, the variable frequency control mainboard needs to be isolated from the refrigerant.

[0004] One solution involves sealing the control box and vertically mounting it within the heat exchange duct housing the fan assembly, heat exchanger, compressor, and piping. The heat sink fins are exposed outside the control box. When the fan assembly operates, the airflow within the heat exchange duct carries away the heat from the heat sink fins, achieving efficient cooling of the inverter control mainboard. Theoretically, this solution prevents refrigerant from entering the control box if a refrigerant leak occurs inside the compressor head.

[0005] However, in practical applications, due to the large size of the inverter control motherboard, the numerous lead wires from the control box, and the exposed heat sink fins outside the control box, the shape of the mating area between the bottom and cover of the control box is irregular. This results in a large number of areas requiring sealing, making effective sealing extremely difficult. Therefore, in practical applications of the above solution, when refrigerant leakage occurs inside the compressor head, there is still a possibility that refrigerant can enter the control box and reach a concentration high enough to cause combustion. In other words, when refrigerant leakage occurs inside the compressor head, refrigerant combustion or explosion may still occur inside the control box. Utility Model Content

[0006] This application provides a heat pump water heater head assembly, comprising: a main body having a heat exchange duct and an installation chamber, the heat exchange duct having a first air outlet and a second air outlet, the installation chamber being located outside the heat exchange duct and having a common wall between the installation chamber and the heat exchange duct, the common wall having a connecting hole; an electrical control box having a heat dissipation device located inside the installation chamber and sealed at the connecting hole, the heat dissipation device facing the heat exchange duct from the connecting hole; a fan assembly and a heat exchanger, both disposed within the heat exchange duct, the fan assembly being configured to form an airflow from one of the first air outlet and the second air outlet through the heat exchanger and the connecting hole to the other of the first air outlet and the second air outlet.

[0007] In some exemplary embodiments, the connecting hole includes a first connecting hole and a second connecting hole, the heat dissipation device includes heat dissipation fins and an inductor coil, the heat dissipation fins extend from the first connecting hole toward the heat exchange duct, and the inductor coil extends from the second connecting hole toward the heat exchange duct.

[0008] In some exemplary embodiments, the first air outlet is located on the top wall of the main body, the second air outlet is located on the side of the main body, the fan assembly is disposed at the first air outlet, the heat exchanger is located below the fan assembly and is disposed corresponding to the second air outlet, the mounting chamber is located on the side of the heat exchange duct, and the fan assembly is configured to form an airflow from the second air outlet through the heat exchanger and the connecting hole to the first air outlet.

[0009] In some exemplary embodiments, the main body includes: a housing having a first air vent on its top wall and a second air vent on its side wall; a support base with a communication port disposed within the housing, dividing the interior of the housing into a first chamber, a mounting chamber, and a second chamber, wherein the first chamber is located on one side of the mounting chamber, and the second chamber is located above both the first chamber and the mounting chamber, and the communication port connects the first chamber and the second chamber; and an air guide ring, one end of which covers the first air vent and the other end of which is connected to the wall of the communication port, wherein a fan assembly is disposed within the air guide ring, and a heat exchanger is disposed within the first chamber, and the heat exchange duct includes the interior of the first chamber, the communication port, and the air guide ring.

[0010] In some exemplary embodiments, the electrical control box includes: a box body located in the mounting cavity and sealed at the communication hole, wherein the wall of the box body facing the communication hole has a through hole, the through hole being opposite to the communication hole; an electrical control board located in the box body; and heat dissipation fins sealed through the through hole and connected to the electrical control board, wherein the heat dissipation device includes the heat dissipation fins.

[0011] In some exemplary embodiments, the housing includes a bottom box and a cover. The bottom box is sealed and installed at the through hole, which is located in the bottom box. The cover is located on the side of the bottom box opposite to the through hole and is mounted on the bottom box. The electronic control board is fixed on the cover. The heat dissipation fins are located on the side of the electronic control board opposite to the cover and are fixed on the electronic control board. One end of the heat dissipation fins away from the electronic control board extends from the through hole to the through hole.

[0012] In some exemplary embodiments, the installation chamber is located above the heat exchange duct, and a magnesium rod maintenance cover is provided at the bottom of the heat exchange duct. The magnesium rod maintenance cover is located below the through hole and opposite to the through hole.

[0013] In some exemplary embodiments, the main body includes: a housing, the side wall of which is provided with a first air outlet and a second air outlet, and the bottom wall of which is provided with a magnesium rod maintenance cover; an air guide ring disposed at the first air outlet; and a support base having the communicating hole disposed inside the housing, the first air outlet and the second air outlet being located below the support base, the mounting chamber being formed above the support base inside the housing, the heat exchange air duct being formed below the support base inside the housing, the heat exchanger being disposed at the second air outlet, and the fan assembly being disposed between the air guide ring and the heat exchanger, and configured to form an airflow from the second air outlet through the heat exchanger, the communicating hole and the air guide ring to the first air outlet.

[0014] In some exemplary embodiments, the bottom box and the cover are hinged at one end and plugged or snapped at the other end.

[0015] This application also provides a heat pump water heater, including the head assembly of the heat pump water heater described in any of the above embodiments.

[0016] The technical solution provided in this application embodiment involves a fan assembly in operation. As the airflow formed within the heat exchange duct passes through the connecting hole, it carries away heat from the heat dissipation devices, cooling the electrical control box. The airflow then blows outwards from the main body. Since the heat exchanger is located in the heat exchange duct, and the electrical control box is located in the mounting chamber, and the electrical control box is sealed at the connecting hole, the mounting chamber is not connected to the outside of the main body. Therefore, in the event of refrigerant leakage, the leaked refrigerant cannot enter the mounting chamber from the heat exchange duct through the connecting hole. Even if the bottom box and cover of the electrical control box are not sealed, the leaked refrigerant cannot enter the electrical control box through the gap between the bottom box and cover. Therefore, this solution prevents refrigerant combustion or explosion inside the electrical control box in the event of refrigerant leakage.

[0017] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0018] The accompanying drawings are provided to further understand the technical solution of this utility model and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solution of this utility model and do not constitute a limitation on the technical solution of this utility model.

[0019] Figure 1 This is an exploded structural diagram of the nose assembly provided in some embodiments of this application;

[0020] Figure 2 for Figure 1 A top view of the cross-sectional structure of the nose assembly shown;

[0021] Figure 3 for Figure 1 The diagram shows a front view of the nose assembly with a cross-sectional view.

[0022] Figure 4 An exploded view of the nose assembly provided for other embodiments of this application;

[0023] Figure 5 for Figure 4 A schematic cross-sectional view of the left side of the nose assembly shown;

[0024] Figure 6 for Figure 4 A top view of the cross-sectional structure of the nose assembly shown;

[0025] Figure 7 for Figure 6 A schematic diagram of the AA cross-sectional structure of the nose assembly shown;

[0026] Figure 8 for Figure 7 The diagram shows a BB cross-sectional view of the nose assembly.

[0027] The attached diagram lists the components represented by each number as follows:

[0028] 110 Heat exchange air duct, 111 First air outlet, 112 Second air outlet, 120 Installation chamber, 130 Common wall, 131 Connecting hole, 140 Shell, 150 Support base, 151 Connecting port, 152 Base body, 153 Support plate, 160 First chamber, 170 Second chamber, 180 Air guide ring, 190 Magnesium rod maintenance cover, 200 Electrical control box, 210 Heat dissipation fins, 220 Inductor coil, 230 Base box, 231 Through hole, 240 Cover body, 250 Electrical control board, 300 Fan assembly, 400 Heat exchanger. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

[0030] The heat pump water heater head assembly provided in this application embodiment, such as... Figures 1 to 8 As shown, it includes: a main body having a heat exchange duct 110 and an installation chamber 120; the heat exchange duct 110 having a first air outlet 111 and a second air outlet 112; the installation chamber 120 being located outside the heat exchange duct 110, and a common wall 130 being provided between the installation chamber 120 and the heat exchange duct 110; the common wall 130 having a connecting hole 131 located between the first air outlet 111 and the second air outlet 112; and an electrical control box 200 having heat dissipation devices. Located within the mounting chamber 120 and sealed at the connecting hole 131, the heat dissipation device extends from the connecting hole 131 toward the heat exchange duct 110; the fan assembly 300 and the heat exchanger 400 are both located within the heat exchange duct 110, and the fan assembly 300 is configured to form an airflow from one of the first air outlet 111 and the second air outlet 112 through the heat exchanger 400 and the connecting hole 131 to the other of the first air outlet 111 and the second air outlet 112.

[0031] The fan assembly 300 is configured to form an airflow from one of the first air vent 111 and the second air vent 112 through the heat exchanger 400 and the connecting hole 131 to the other of the first air vent 111 and the second air vent 112: or the fan assembly 300 may be configured to form an airflow from the first air vent 111 through the heat exchanger 400 and the connecting hole 131 to the second air vent 112; or the fan assembly 300 may be configured to form an airflow from the second air vent 112 through the heat exchanger 400 and the connecting hole 131 to the first air vent 111.

[0032] When the fan assembly 300 is running, the airflow formed in the heat exchange duct 110 carries away the heat from the heat dissipation device as it passes through the connecting hole 131, thus cooling the electrical control box 200. Then the airflow is blown to the outside of the main body. Since the heat exchanger 400 is located in the heat exchange duct 110 and the electrical control box 200 is located in the installation chamber 120, and the electrical control box 200 is sealed at the connecting hole 131, and the installation chamber 120 is not connected to the outside of the main body, when the refrigerant leaks, the leaked refrigerant cannot enter the installation chamber 120 from the heat exchange duct 110 through the connecting hole 131 (because the leaked refrigerant cannot enter the installation chamber 120, the leaked refrigerant also cannot enter the electrical control box 200 from the installation chamber 120). Thus, even if there is no sealing treatment between the bottom box 230 and the cover 240 of the electrical control box 200, the leaked refrigerant cannot enter the interior of the electrical control box 200 from the gap between the bottom box 230 and the cover 240. Therefore, with this solution, the interior of the electrical control box 200 will not experience refrigerant combustion or refrigerant explosion when the refrigerant leaks.

[0033] In some examples, such as Figures 1 to 3 As shown, the connecting hole 131 includes a first connecting hole and a second connecting hole, and the heat dissipation device includes heat dissipation fins 210 and an inductor coil 220. The heat dissipation fins 210 extend from the first connecting hole toward the heat exchange air duct 110, and the inductor coil 220 extends from the second connecting hole toward the heat exchange air duct 110.

[0034] When the fan assembly 300 is running, the airflow formed in the heat exchange duct 110 carries away the heat from the heat dissipation fins 210 and the inductor coil 220 as it passes through the first and second connecting holes, thereby cooling the electrical control box 200. Then the airflow blows outwards from the main body.

[0035] In some embodiments, such as Figures 1 to 3 As shown, the first air vent 111 is located on the top wall of the main body, and the second air vent 112 is located on the side of the main body. A fan assembly 300 is located at the first air vent 111, and a heat exchanger 400 is located below the fan assembly 300 and correspondingly positioned to the second air vent 112. The fan assembly 300 is configured to form an airflow from the second air vent 112 through the heat exchanger 400, the first connecting hole, and the second connecting hole to the first air vent 111. In the horizontal direction, the mounting chamber 120 is located on one side of the heat exchange duct 110.

[0036] In some embodiments, such as Figures 1 to 3As shown, the main body includes: a shell 140, with a first air vent 111 on its top wall and a second air vent 112 on its side wall; and a support base 150 with a communication opening 151, which is disposed inside the shell 140 and divides the interior of the shell 140 into a first chamber 160, a mounting chamber 120, and a second chamber 170. In the horizontal direction, the first chamber 160 is located on one side of the mounting chamber 120, and in the vertical direction, the second chamber 170 is simultaneously located in the first chamber. Above the first chamber 160 and the mounting chamber 120, the connecting port 151 connects the first chamber 160 and the second chamber 170; and the air guide ring 180, one end of the air guide ring 180 is covered at the first air outlet 111, and the other end is connected to the wall of the connecting port 151. The fan assembly 300 is located inside the air guide ring 180, and the heat exchanger 400 is located inside the first chamber 160. The heat exchange air duct 110 includes the interior of the first chamber 160, the connecting port 151 and the air guide ring 180.

[0037] Among them, such as Figures 1 to 3 As shown, the support base 150 includes a base body 152 and a support plate 153. The support plate 153 is erected below the base body 152 and connected to the base body 152. The communication port 151 is located on the base body 152. The first communication hole and the second communication hole are both located on the support plate 153. The first chamber 160 and the mounting chamber 120 are located on both sides of the support plate 153. The second chamber 170 is located above the base body 152. The electrical control box 200 is sealed with the support plate 153 at both the first communication hole and the second communication hole to prevent leaked refrigerant from entering the mounting chamber 120 from the first chamber 160 through the first communication hole and the second communication hole. The heat dissipation fins 210 are directly opposite the first communication hole and face the first chamber 160 from the first communication hole. The inductor coil 220 is directly opposite the second communication hole and faces the first chamber 160 from the second communication hole. The heat exchanger 400 has a bent structure, with the concave side of the heat exchanger 400 facing the support plate 153. The upper part of the heat exchanger 400 is sealed and fitted with the seat 152. The two ends of the heat exchanger 400 located around the shell 140 are sealed and fitted with the two ends of the support plate 153 located around the shell 140.

[0038] It can be, such as Figure 3As shown, the electrical control box 200 includes a base box 230, a cover 240, an electrical control board 250, heat dissipation fins 210, and an inductor coil 220. The base box 230 is sealed to the support plate 153 at both the first and second connecting holes, and the base box 230 has through holes 231 corresponding to the positions of the first and second connecting holes. The cover 240 is located on the side of the base box 230 facing away from the support plate 153 and is mounted on the base box 230. The control board 250 is located within the cavity formed by the cover 240 and the base box 230. The wall of the through hole 231 is sealed to the control board 250. The heat dissipation fins 210 and the inductor coil 220 are both located within the through hole 231. One end of the heat dissipation fins 210 and one end of the inductor coil 220 are connected to the control board 250. The other end of the heat dissipation fins 210 faces the first connecting hole and extends from the first connecting hole and the through hole 231 toward the first cavity 160. The other end of the inductor coil 220 faces the second connecting hole and extends from the second connecting hole and the through hole 231 toward the first cavity 160. In this design, no sealing is required between the base box 230 and the cover 240 of the control box 200. In the event of refrigerant leakage, the leaked refrigerant cannot enter the interior of the control box 200 through the gap between the base box 230 and the cover 240, and refrigerant combustion or explosion will not occur inside the control box 200.

[0039] It can be, such as Figure 1 and Figure 3 As shown, the heat exchanger 400 can be a V-shaped heat exchanger, a C-shaped heat exchanger, or a U-shaped heat exchanger, etc. All of the above can achieve the purpose of this application, and their purpose has not deviated from the design concept of this utility model. They will not be described in detail here, and all should fall within the protection scope of this application.

[0040] In other examples, such as Figures 4 to 8 As shown, the electrical control box 200 includes: a box body, which is located inside the mounting chamber 120 and sealed at the connecting hole 131, and the wall of the box body facing the connecting hole 131 is provided with a through hole 231, the through hole 231 being opposite to the connecting hole 131 (e.g., Figure 6 and Figure 8 (As shown); an electronic control board 250, located inside the housing; and heat dissipation fins 210, which are sealed through the through hole 231 and connected to the electronic control board 250. The end of the heat dissipation fins 210 away from the electronic control board 250 extends from the through hole 131 towards the heat exchange duct 110. The heat dissipation device includes heat dissipation fins 210. The wall of the through hole 231 is sealed to the heat dissipation fins 210 (the sealing fit can be a small gap sealing fit or an abutment sealing fit, etc.) to prevent leaked refrigerant from entering the housing through the gap between the wall of the through hole 231 and the electronic control board 250.

[0041] In some embodiments, such as Figures 5 to 8As shown, the box body includes a bottom box 230 and a cover 240. The bottom box 230 is sealed and installed at the through hole 131. The through hole 231 is located in the bottom box 230 and is opposite to the through hole 131. The cover 240 is located on the side of the bottom box 230 away from the through hole 131 and is installed on the bottom box 230. The control board 250 is fixed on the cover 240. The heat dissipation fins 210 are located on the side of the control board 250 away from the cover 240 and are fixed on the control board 250. The end of the heat dissipation fins 210 away from the control board 250 extends from the through hole 231 to the through hole 131. That is, the heat dissipation fins 210 are sealed and pass through the through hole 231. The end of the heat dissipation fins 210 away from the control board 250 is located outside the bottom box 230 and faces the through hole 131. In this design, no sealing is required between the base box 230 and the cover 240 of the electrical control box 200. In the event of refrigerant leakage, the leaked refrigerant cannot enter the interior of the electrical control box 200 through the gap between the base box 230 and the cover 240, preventing refrigerant combustion or explosion inside the electrical control box 200. Furthermore, the removal and installation of the cover 240 on the base box 230 is relatively simple.

[0042] In some embodiments, such as Figure 5 As shown, the installation chamber 120 is located above the heat exchange duct 110. A magnesium rod maintenance cover 190 is located at the bottom of the heat exchange duct 110, directly below the connecting hole 131 and opposite the through hole 231. When the cover 240 is opened, the control board 250 detaches from the base box 230 along with the cover 240. During this process, the heat dissipation fins 210 are removed from the through hole 231. At this point, the magnesium rod maintenance cover 190 can be opened and closed, and the magnesium rod can be replaced, through the through hole 231 and the connecting hole 131, thus simplifying the magnesium rod replacement process.

[0043] In some embodiments, such as Figure 4 and Figure 5As shown, the main body includes: a housing 140, with a first air vent 111 and a second air vent 112 on the side wall of the housing 140, and a magnesium rod maintenance cover 190 on the bottom wall of the housing 140; an air guide ring 180 located at the first air vent 111; and a support base 150 with a connecting hole 131, the support base 150 being located inside the housing 140, with the first air vent 111 and the second air vent 112 both located below the support base 150 and around the circumference of the housing 140. A mounting chamber 120 is formed above the support base 150 inside the housing 140, and a heat exchange air duct 110 is formed below the support base 150 inside the housing 140. A heat exchanger 400 is located at the second air outlet 112, and a fan assembly 300 is located between the air guide ring 180 and the heat exchanger 400. The fan assembly 300 is configured to form an airflow from the second air outlet 112, sequentially passing through the heat exchanger 400, the connecting hole 131, and the air guide ring 180, towards the first air outlet 111. One end of the support base 150 adjacent to the air guide ring 180 can be supported and fixed by the motor bracket of the fan assembly 300.

[0044] Among them, such as Figure 4 and Figure 5 As shown, the air guide ring 180 is at least partially located inside the housing 140, and the support seat 150 is located on the upper part of one side of the air guide ring 180 and is sealed to the upper part of one side of the air guide ring 180.

[0045] The connection can be made in various ways, such as hinged connection at one end of the bottom box 230 and the cover 240, and plug-in connection at the other end of the cover 240 and the support base 150 (the plug-in connection can be a plug-in structure of a pin and a pin hole); or hinged connection at one end of the bottom box 230 and the cover 240, and snap-fit ​​connection at the other end of the cover 240 and the support base 150 (the snap-fit ​​connection can be a snap-fit ​​structure of a buckle and a latch); or hinged connection at one end of the bottom box 230 and the cover 240, and plug-in connection at the other end; or hinged connection at one end of the bottom box 230 and the cover 240, and snap-fit ​​connection at the other end; all of the above can achieve the purpose of this application, and their purpose has not departed from the design concept of this utility model, so they will not be elaborated here, and should all fall within the protection scope of this application.

[0046] In one embodiment, such as Figure 5 and Figure 7 As shown, the bottom box 230 and the cover 240 are hinged at one end. The side wall of the bottom box 230 is provided with a pin hole, and the side wall of the cover 240 is provided with a movable pin. After the cover 240 is installed on the bottom box 230, the pin is inserted into the pin hole to fix the cover 240 on the bottom box 230.

[0047] The heat pump water heater provided in this application embodiment (not shown in the figure) includes the head assembly of the heat pump water heater described in any of the above embodiments.

[0048] This heat pump water heater has all the advantages of the head assembly provided in any of the above embodiments, and will not be elaborated here.

[0049] In summary, for the technical solution provided in the embodiment of the present application, when the fan assembly operates, during the process that the air beam formed in the heat exchange air duct passes through the communication hole, the heat on the heat dissipation device is carried away to cool down the electronic control box, and then the air beam blows to the outside of the main body. Since the heat exchanger is located in the heat exchange air duct, the electronic control box is located in the installation chamber, and the electronic control box is sealed and installed at the communication hole, and the installation chamber is not connected to the outside of the main body, when the refrigerant leaks, the leaked refrigerant cannot enter the installation chamber from the heat exchange air duct through the communication hole. In this way, even if the bottom box and the cover of the electronic control box are not sealed, the leaked refrigerant cannot enter the electronic control box through the gap between the bottom box and the cover. Therefore, when the refrigerant leaks, refrigerant combustion or refrigerant explosion will not occur inside the electronic control box.

[0050] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", "one side", "the other side", "one end", "the other end", "edge", "opposite", "four corners", "perimeter", "the "mouth" structure", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the structure referred to has a specific orientation, is constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0051] In the description of the embodiments of the present utility model, unless otherwise clearly defined and limited, the terms "connection", "direct connection", "indirect connection", "fixed connection", "installation", "assembly" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; the terms "installation", "connection", "fixed connection" can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0052] Although the disclosed embodiments of the present utility model are as above, the content described is only the embodiments adopted for the convenience of understanding the present utility model, and is not used to limit the present utility model. Any person skilled in the art within the field of the present utility model can make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed by the present utility model. However, the patent protection scope of the present utility model shall still be defined by the appended claims.

Claims

1. A heat pump water heater head assembly, characterized in that, include: The main body has a heat exchange air duct and an installation chamber. The heat exchange air duct has a first air outlet and a second air outlet. The installation chamber is located outside the heat exchange air duct, and there is a common wall between the installation chamber and the heat exchange air duct. The common wall is provided with a connecting hole. An electrical control box with a heat dissipation device is located in the mounting cavity and is sealed at the communication hole, with the heat dissipation device extending from the communication hole toward the heat exchange air duct; The fan assembly and the heat exchanger are both located within the heat exchange duct, and the fan assembly is configured to form an airflow from one of the first air outlet and the second air outlet through the heat exchanger and the connecting hole to the other of the first air outlet and the second air outlet.

2. The head assembly according to claim 1, characterized in that, The connecting hole includes a first connecting hole and a second connecting hole, and the heat dissipation device includes heat dissipation fins and an inductor coil. The heat dissipation fins extend from the first connecting hole toward the heat exchange air duct, and the inductor coil extends from the second connecting hole toward the heat exchange air duct.

3. The head assembly according to claim 1 or 2, characterized in that, The first air vent is located on the top wall of the main body, the second air vent is located on the side of the main body, the fan assembly is located at the first air vent, the heat exchanger is located below the fan assembly and is correspondingly arranged with the second air vent, the mounting chamber is located on the side of the heat exchange air duct, and the fan assembly is configured to form an air jet that flows from the second air vent through the heat exchanger and the connecting hole to the first air vent.

4. The head assembly according to claim 3, characterized in that, The subject includes: The casing has a first air vent on its top wall and a second air vent on its side wall; A support base with a communication port is disposed within the housing, dividing the interior of the housing into a first chamber, a mounting chamber, and a second chamber. The first chamber is located to one side of the mounting chamber, and the second chamber is located above both the first chamber and the mounting chamber. The communication port connects the first chamber and the second chamber. The air guide ring has one end covering the first air outlet and the other end connected to the wall of the connecting port. The fan assembly is located inside the air guide ring, the heat exchanger is located in the first chamber, and the heat exchange duct includes the first chamber, the connecting port, and the interior of the air guide ring.

5. The head assembly according to claim 1, characterized in that, The electrical control box includes: The box body is located in the mounting cavity and is sealed at the connecting hole, and the wall of the box body facing the connecting hole has a through hole, which is opposite to the connecting hole; The electronic control board is located inside the housing; and The heat dissipation fins are sealed through the through hole and connected to the electronic control board. The heat dissipation device includes the heat dissipation fins.

6. The head assembly according to claim 5, characterized in that, The box body includes a bottom box and a cover. The bottom box is sealed and installed at the through hole, which is located in the bottom box. The cover is located on the side of the bottom box away from the through hole and is installed on the bottom box. The electronic control board is fixed on the cover. The heat dissipation fins are located on the side of the electronic control board away from the cover and are fixed on the electronic control board. The end of the heat dissipation fins away from the electronic control board extends from the through hole to the through hole.

7. The head assembly according to claim 6, characterized in that, The installation chamber is located above the heat exchange air duct, and a magnesium rod maintenance cover is provided at the bottom of the heat exchange air duct. The magnesium rod maintenance cover is located below the connecting hole and is opposite to the connecting hole.

8. The head assembly according to claim 7, characterized in that, The subject includes: The housing has a first air vent and a second air vent on its side wall, and the magnesium rod maintenance cover is provided on the bottom wall of the housing. The air guide ring is located at the first air outlet; and A support base with the connecting hole is disposed inside the housing. The first air outlet and the second air outlet are both located below the support base. The mounting chamber is formed above the support base inside the housing, and the heat exchange air duct is formed below the support base inside the housing. The heat exchanger is disposed at the second air outlet. The fan assembly is disposed between the air guide ring and the heat exchanger, and is configured to form an airflow that flows from the second air outlet through the heat exchanger, the connecting hole and the air guide ring to the first air outlet.

9. The head assembly according to claim 6, characterized in that, The bottom box and the cover are hinged at one end and plugged or snapped at the other end.

10. A heat pump water heater, characterized in that, Includes the head assembly of a heat pump water heater as described in any one of claims 1 to 9.

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