A machine head assembly and heat pump water heater

Abstract

The application discloses a machine head assembly and a heat pump water heater. The machine head assembly comprises a bearing base, a volute lower cover fixed to the bearing base, an end wall of the volute lower cover being provided with an upper through mounting hole, a fan wheel module comprising a motor support, a motor and a fan wheel, the motor support being inserted into the mounting hole from top to bottom, the motor being fixed to the motor support, and the fan wheel being transmissionally installed on the motor, and a volute upper cover fixed to the volute lower cover from top to bottom, the volute upper cover, the volute lower cover and the motor support forming a volute air duct, and the fan wheel being located in the volute air duct. The machine head assembly is used in the heat pump water heater, and is arranged on the upper portion of a water tank assembly of the heat pump water heater. When the motor is damaged, the heat pump water heater does not need to be dismounted from the wall, and only the volute upper cover needs to be dismounted from the machine head assembly from bottom to top, then the fan wheel module needs to be dismounted from bottom to top, and then the motor can be dismounted by disassembling the fan wheel module on the ground. The process of dismounting the motor is simple and has low difficulty.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electrical equipment, more particularly, to a head assembly and a heat pump water heater. BACKGROUND

[0002] The existing heat pump water heater has the highest maintenance probability of the electric control module of the head assembly, so the electric control module is usually designed at the front of the head assembly (away from the hanging wall), the fan module is designed at the rear of the head assembly (close to the hanging wall), the heat exchanger is arranged between the electric control module and the fan module, and the compressor is located at the side of the heat exchanger away from the fan module. The fan module includes a rear cover of an air duct, a motor, a fan wheel and a front cover of the air duct, the electric control module, the compressor, the heat exchanger and the front cover of the air duct are arranged in sequence from front to rear and are all fixed on a water collecting tray at the bottom of the head assembly, the motor is fixed in the front cover of the air duct, the fan wheel is located at the rear side of the motor and is installed on the rotating shaft of the motor, the rear cover of the air duct is located at the rear side of the front cover of the air duct and is fixed on the front cover of the air duct from rear to front by screws, and the rear cover of the air duct and the front cover of the air duct jointly enclose an air passing air duct, and the external cover of the electric control module, the compressor, the heat exchanger and the fan module is provided with a decorative cover.

[0003] When the motor fails, the maintenance personnel need to first drain the water in the heat pump water heater, then remove the heat pump water heater from the hanging wall and place it on the ground, then remove the decorative cover, the rear cover of the air duct and the fan wheel in sequence, and then disassemble the motor for maintenance or replacement. The process of disassembling and assembling the motor is complex and difficult. SUMMARY

[0004] The embodiment of the present application provides a head assembly for a heat pump water heater, which comprises a bearing base, a volute lower cover fixed to the bearing base, an end wall of the volute lower cover being provided with an upper through mounting port, a fan wheel module comprising a motor support, a motor and a fan wheel, the motor support being inserted into the mounting port from top to bottom, the motor being fixed to the motor support, and the fan wheel being transmissionally installed on the motor, and a volute upper cover fixed to the volute lower cover from top to bottom, the volute upper cover, the volute lower cover and the motor support jointly enclosing a volute air duct, and the fan wheel being located in the volute air duct.

[0005] In some example embodiments, an end wall of the mounting port is provided with a guide structure arranged to guide the motor support to be inserted into the mounting port downward.

[0006] In some example embodiments, opposite end walls of the mounting port are both provided with guide protrusions arranged along the up-down direction, and the guide structure comprises the guide protrusions.

[0007] In some exemplary embodiments, the outer end face of the volute lower cover is further provided with a slot, the slot is located below the mounting port and extends vertically, the bearing base is provided with a support boss, the slot is inserted downward into the support boss, and the motor bracket abuts downward against the support boss.

[0008] In some exemplary embodiments, the lower part of the motor bracket is provided with a downwardly protruding retaining rib, and the lower side wall of the mounting port is provided with an upwardly opening retaining groove, and the retaining rib is inserted downward into the retaining groove.

[0009] In some exemplary embodiments, the end wall of the volute cover is provided with a through-hole at the bottom, the upper part of the motor bracket is located above the mounting hole, and the through-hole is inserted downward into the upper part of the motor bracket.

[0010] In some exemplary embodiments, the socket wall is provided with a rib, and the upper part of the motor bracket is provided with a second slot, and the rib is inserted into the second slot from top to bottom.

[0011] In some exemplary embodiments, the head assembly further includes: a heat exchanger erected on one side of the lower cover of the volute, the mounting port being located on the end wall of the lower cover of the volute adjacent to the heat exchanger, and the air inlet of the volute air duct being located on the side of the motor bracket.

[0012] In some exemplary embodiments, the head assembly further includes: a heat exchanger erected on one side of the lower cover of the volute, the mounting port being located on the end wall of the lower cover of the volute away from the heat exchanger, the motor bracket blocking the mounting port, and the end wall of the lower cover of the volute adjacent to the heat exchanger and the end wall of the upper cover of the volute adjacent to the heat exchanger forming the air inlet of the volute air duct.

[0013] In some exemplary embodiments, the head assembly further includes: a housing peripheral wall, the lower end of which is connected to the support base; and a housing end cap, which covers the upper part of the housing peripheral wall.

[0014] The heat pump water heater proposed in this embodiment of the invention includes a water tank assembly and a head assembly as described in any of the above embodiments, wherein the water tank assembly is located below the head assembly.

[0015] The technical solution provided by this invention is that the head assembly is used in a heat pump water heater. The head assembly is located on the upper part of the water tank assembly of the heat pump water heater. When the motor is damaged, it is not necessary to remove the heat pump water heater from the wall. It is only necessary to remove the volute cover from the bottom up on the head assembly, then remove the impeller module from the bottom up, and then disassemble the impeller module on the ground to remove the motor. The process of removing and installing the motor is simple and easy.

[0016] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0017] The accompanying drawings are provided to further understand the technical solutions of the present invention and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of the present invention and do not constitute a limitation on the technical solutions of the present invention.

[0018] Figure 1 An exploded structural diagram of a nose cone assembly provided in some embodiments;

[0019] Figure 2 for Figure 1 Another exploded view of the nose assembly shown;

[0020] Figure 3 for Figure 1 Exploded view of the wind turbine module;

[0021] Figure 4 An exploded structural diagram of the nose assembly provided in other embodiments;

[0022] Figure 5 for Figure 4 Another exploded view of the nose assembly shown;

[0023] Figure 6 for Figure 4 Exploded view of the wind turbine module.

[0024] The correspondence between the reference numerals and the component names is as follows:

[0025] 100 Bearing base, 110 Support boss, 200 Lower cover of volute, 210 Mounting port, 211 Guide structure, 212 Slot, 220 Slot, 300 Fan module, 310 Motor bracket, 311 Bracket, 312 Second slot, 320 Motor, 330 Fan, 400 Upper cover of volute, 410 Insertion port, 411 Bracket, 500 Casing peripheral wall, 600 Casing end cover, 700 Heat exchanger, 800 Air inlet. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention 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.

[0027] The heat pump water heater proposed in the embodiments of the present invention, such asFigures 1 to 6 As shown, the assembly includes a water tank assembly and a turbine head assembly, with the water tank assembly located below the turbine head assembly. The turbine head assembly includes: a support base 100; a lower volute cover 200, fixed to the support base 100, with an installation opening 210 on its end wall, the upper side of which is through-hole; a wind turbine module 300, including a motor bracket 310, a motor 320, and a wind turbine 330, the motor bracket 310 being inserted into the installation opening 210 from top to bottom, the motor 320 being fixed to the motor bracket 310, and the wind turbine 330 being driven and mounted on the motor 320; and a upper volute cover 400, fixed to the lower volute cover 200 from top to bottom. The upper volute cover 400, the lower volute cover 200, and the motor bracket 310 together form a volute air duct, with the wind turbine 330 located within the volute air duct.

[0028] The motor head assembly is used in heat pump water heaters. The motor head assembly is located on the upper part of the water tank assembly of the heat pump water heater. When the motor is damaged, it is not necessary to remove the heat pump water heater from the wall. Simply remove the volute cover 400 from the bottom up on the motor head assembly, then remove the impeller module 300 from the bottom up, and then disassemble the impeller module 300 on the ground to remove the motor. The process of removing and installing the motor is simple and easy.

[0029] The height of the motor bracket 310 can be designed to be close to or smaller than the diameter of the impeller 330. This way, the installation distance between the heat pump water heater and the ceiling only needs to be slightly greater than the diameter of the impeller 330 to allow the impeller module 300 to be removed from above the heat pump water heater. The supporting base 100 is set as a water receiving tray.

[0030] In some examples, such as Figure 1 and Figure 4 As shown, the mounting port 210 has a guide structure 211 on its wall, which guides the motor bracket 310 downwards into the mounting port 210. This design ensures that after repairing or replacing the motor 320, the impeller module 300 can be smoothly inserted into the mounting port 210 from top to bottom during blind installation, thus reducing the difficulty of assembling the impeller module 300 with the volute lower cover 200.

[0031] In some embodiments, such as Figure 1 and Figure 4 As shown, the opposite walls of the mounting port 210 are provided with guide ribs arranged in the vertical direction, and the guide structure 211 includes two guide ribs. During the installation of the wind turbine module 300, the lower part of the motor bracket 310 abuts against the side of the guide rib. Under the limitation of the opposite walls of the mounting port 210 outside the guide rib, the motor bracket 310 moves downward along the side of the guide rib, so that the motor bracket 310 is smoothly inserted into the mounting port 210.

[0032] In some embodiments, such as Figure 1 As shown, the outer end face of the lower cover 200 of the volute is also provided with a slot 220 (the slot opening of the slot 220 faces away from the volute air duct). The slot 220 is located below the mounting port 210 and is vertically continuous. The supporting base 100 is provided with a supporting boss 110. The slot 220 is inserted downward into the supporting boss 110, and the motor bracket 310 abuts downward against the supporting boss 110. Wherein, as Figure 1 As shown, the top surface of the support boss 110 is provided with a positioning post, and the lower end surface of the motor bracket 310 is provided with a positioning hole. The positioning hole is inserted into the positioning post to fix the lower part of the motor bracket 310 on the support boss 110.

[0033] Alternatively, the top surface of the support boss 110 may be provided with a positioning hole, and the lower end surface of the motor bracket 310 may be provided with a positioning post. The positioning post is inserted downward into the positioning hole, so that the lower part of the motor bracket 310 is fixed on the support boss 110. This solution can also achieve the purpose of this application. Its purpose has not deviated from the design concept of this invention, and will not be elaborated here. It should also fall within the protection scope of this application.

[0034] In some embodiments, the lower part of the motor bracket 310 is provided with a downward-facing slot, and the lower side wall of the mounting port 210 is provided with a retaining rib. The slot is fitted downwards into the retaining rib, thereby fixing the lower part of the motor bracket 310 to the lower cover 200 of the volute. The retaining rib is set as an arc-shaped retaining rib, and the slot is set as an arc-shaped slot.

[0035] Of course, it can also be, such as Figures 4 to 6 As shown, the lower part of the motor bracket 310 is provided with a downward protruding retaining rib 311, and the lower side wall of the mounting port 210 is provided with an upward-opening retaining groove 212. The retaining rib 311 is inserted downward into the retaining groove 212, so that the lower part of the motor bracket 310 is fixed on the lower side wall of the mounting port 210. This solution can also achieve the purpose of this application. Its purpose has not departed from the design concept of this invention, and will not be elaborated here. It should also fall within the protection scope of this application.

[0036] In some examples, such as Figure 1 , Figure 2 and Figure 5 As shown, the end wall of the volute cover 400 has a through-hole 410 at the bottom. The upper part of the motor bracket 310 is located above the mounting port 210, and the through-hole 410 is inserted downwards into the upper part of the motor bracket 310. Wherein, as Figure 1 and Figure 2 As shown, the wall of the socket 410 is provided with inserting ribs 411 arranged in the vertical direction, and the upper part of the motor bracket 310 is provided with a second slot 312. The inserting ribs 411 are inserted into the second slot 312 from top to bottom, so that the upper part of the motor bracket 310 is fixed on the volute cover 400.

[0037] Alternatively, the socket 410 may have a second slot on its wall, and the upper part of the motor bracket 310 may have a reinforcing rib. The slot may be inserted into the reinforcing rib from top to bottom, thereby fixing the upper part of the motor bracket 310 to the volute cover 400. This solution can also achieve the purpose of this application. Its purpose has not deviated from the design concept of this invention, and will not be elaborated here. It should also fall within the protection scope of this application.

[0038] Furthermore, such as Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the head assembly also includes: a housing peripheral wall 500, the lower end of which is connected to the supporting base 100; and a housing end cover 600, which is installed on the upper part of the housing peripheral wall 500. First, remove the housing end cover 600, then remove the volute upper cover 400 from bottom to top, then remove the impeller module 300 from bottom to top, and finally disassemble the impeller module 300 to repair or replace the motor 320.

[0039] Both the upper cover 400 and the lower cover 200 of the volute can be designed as foam components. The upper cover 400 of the volute can be pressed down by the end cap 600 of the housing to position the upper cover 400 of the volute and the motor bracket 310, which can further reduce the difficulty of disassembling and assembling the motor 320. Alternatively, screws can be used to fix the upper cover 300 of the volute and the impeller module 300 from top to bottom.

[0040] It could be that the shell's 500mm perimeter wall is a single, integral structure; or it could be, as... Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the shell peripheral wall 500 is a split structure; all of the above can achieve the purpose of this application, and their purpose has not departed from the design concept of this invention, so they will not be repeated here, and should all fall within the protection scope of this application.

[0041] It can be, such as Figures 1 to 3 As shown, the head assembly also includes: a heat exchanger 700, which is erected on one side of the lower cover 200 of the volute; a mounting port 210 is located on the end wall of the lower cover 200 of the volute adjacent to the heat exchanger 700; and an air inlet 800 of the volute air duct is located on the side of the motor bracket 310; or it can be, as... Figures 4 to 6As shown in the figure, the head assembly further includes: a heat exchanger 700, vertically arranged on one side of the lower cover 200 of the volute. The installation port 210 is located on the end wall of the lower cover 200 of the volute away from the heat exchanger 700. The motor bracket 310 seals the installation port 210. The end wall of the lower cover 200 of the volute adjacent to the heat exchanger 700 and the end wall of the upper cover 400 of the volute adjacent to the heat exchanger 700 enclose the air inlet 800 of the volute air duct; the above can all achieve the purpose of this application, and its gist does not depart from the design concept of the present invention, so it will not be elaborated here and should all fall within the protection scope of this application.

[0042] In summary, for the technical solution provided by the embodiment of the present invention, the head assembly is used for a heat pump water heater. The head assembly is arranged on the upper part of the water tank assembly of the heat pump water heater. When the motor is damaged, there is no need to disassemble the heat pump water heater from the hanging wall. Only need to first disassemble the upper cover of the volute from bottom to top on the head assembly, then disassemble the impeller module from bottom to top, and then disassemble the impeller module on the ground to disassemble the motor. The process of disassembling and assembling the motor is simple and has little difficulty.

[0043] In the description of the present invention, 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", "side", "opposite", "four corners", "perimeter", "the structure of the character 'kou'" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention 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, so it cannot be understood as a limitation to the present invention.

[0044] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "connection", "direct connection", "indirect connection", "fixed connection", "installation", "assembly" should 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 internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0045] Although the disclosed embodiments of the present invention are as above, the content described is only the embodiments adopted for the convenience of understanding the present invention, and is not used to limit the present invention. Any person skilled in the art within the scope of the present invention 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 invention. However, the patent protection scope of the present invention still shall be defined by the appended claims.

Claims

1. A head assembly for a heat pump water heater, characterized in that, The head assembly includes: Supporting substrate; The lower cover of the volute is fixed to the bearing base, and the end wall of the lower cover of the volute has an upper through mounting port; A wind turbine module includes a motor bracket, a motor, and a wind turbine. The motor bracket is inserted into the mounting port from top to bottom. The motor is fixed to the motor bracket, and the wind turbine is driven and mounted on the motor. The upper cover of the volute is fixed to the lower cover of the volute from top to bottom. The upper cover of the volute, the lower cover of the volute, and the motor bracket together form a volute air duct. The impeller is located inside the volute air duct. The outer end face of the volute lower cover is also provided with a slot. The slot is located below the mounting port and is vertically connected. The bearing base is provided with a support boss. The slot is inserted downward into the support boss, and the motor bracket abuts downward against the support boss.

2. The head assembly according to claim 1, characterized in that, The mounting port has a guide structure on its wall, which is configured to guide the motor bracket downward into the mounting port.

3. The head assembly according to claim 2, characterized in that, The opposite walls of the mounting opening are provided with guide ribs arranged in the vertical direction, and the guide structure includes the guide ribs.

4. The head assembly according to claim 1, characterized in that, The lower part of the motor bracket is provided with a downward protruding retaining rib, and the lower side wall of the mounting port is provided with an upward-opening retaining groove, and the retaining rib is inserted downward into the retaining groove.

5. The head assembly according to claim 1, characterized in that, The end wall of the volute cover is provided with a through-hole at the bottom. The upper part of the motor bracket is located above the mounting hole, and the through-hole is inserted downward into the upper part of the motor bracket.

6. The head assembly according to claim 5, characterized in that, The socket has a rib on its wall, and the upper part of the motor bracket has a second slot. The rib is inserted into the second slot from top to bottom.

7. The head assembly according to any one of claims 1 to 6, characterized in that, Also includes: The heat exchanger is erected on one side of the lower cover of the volute. Wherein, the mounting port is located on the end wall of the lower cover of the volute near the heat exchanger, and the air inlet of the volute air duct is located on the side of the motor bracket; or The mounting port is located on the end wall of the lower cover of the volute away from the heat exchanger. The motor bracket blocks the mounting port. The end wall of the lower cover of the volute adjacent to the heat exchanger and the end wall of the upper cover of the volute adjacent to the heat exchanger together form the air inlet of the volute air duct.

8. The head assembly according to any one of claims 1 to 6, characterized in that, Also includes: The lower end of the shell peripheral wall is connected to the supporting base; and The housing end cap is installed on the upper part of the housing peripheral wall.

9. A heat pump water heater, characterized in that, It includes a water tank assembly and a head assembly as described in any one of claims 1 to 8, wherein the water tank assembly is disposed below the head assembly.

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