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 lower volute located above the bearing base and fixed to the bearing base, and an upper volute module comprising an upper volute, a motor and a fan wheel, the motor being fixed to the upper volute, the fan wheel being in transmission connection with a rotating shaft of the motor, the upper volute module being fixed to the lower volute from top to bottom, the upper volute and the lower volute enclosing a volute air duct, and the fan wheel being located in the volute air duct; wherein the upper volute is provided with a positioning part, the bearing base is provided with a matching part, the positioning part is matched with the matching part to limit the upper volute module by the bearing base, so that the structural stability of the upper volute module is better; in addition, when the motor is damaged, the heat pump water heater does not need to be dismounted on the hanging wall body, the upper volute module is dismounted on the machine head assembly from bottom to top, and the motor can be dismounted, so that the motor dismounting process is more convenient.

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 electric control module, the compressor, the heat exchanger and the fan module are covered by 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 lower volute located above the bearing base and fixed to the bearing base, and an upper volute module comprising an upper volute, a motor and a fan wheel, the motor being fixed to the upper volute, the fan wheel being in transmission connection with the rotating shaft of the motor, the upper volute module being fixed to the lower volute from above, the upper volute and the lower volute jointly enclosing a volute air duct, and the fan wheel being located in the volute air duct; wherein the upper volute is provided with a positioning part, the bearing base is provided with a matching part, and the positioning part and the matching part are matched.

[0005] In some example embodiments, one of the positioning part and the matching part is a positioning rib, and the other is a matching groove, and the positioning rib and the matching groove are in plug-in connection in the up-down direction.

[0006] In some example embodiments, the upper volute is provided with a first boss, the positioning part is arranged on the first boss, the bearing base is provided with a second boss, and the matching part is arranged on the second boss.

[0007] In some example embodiments, the machine head assembly further comprises a heat exchanger fixed to the bearing base, one end of the lower volute adjacent to the heat exchanger is fixed to the side plate of the heat exchanger, and the other end of the lower volute away from the heat exchanger is fixed to the second boss.

[0008] In some example embodiments, the lower volute is an integral structure and comprises a vertical plate portion vertically arranged along the up-down direction and provided with a wind passing hole, a wind guide ring portion located in the wind passing hole and integrally connected with the hole wall of the wind passing hole, and a lower volute cover portion integrally connected with the lower part of the first side of the vertical plate portion, the lower volute cover portion and the lower part of the vertical plate portion enclose a lower accommodating groove with a groove opening facing upward, the lower part of the wind guide ring portion is located on the side wall of the lower accommodating groove, the upper volute and the upper part of the vertical plate portion enclose an upper accommodating groove with a groove opening facing downward, the upper part of the wind guide ring portion is located on the side wall of the upper accommodating groove, and the lower accommodating groove and the upper accommodating groove enclose the volute air duct.

[0009] In some example embodiments, the lower volute further comprises a wind baffle portion transversely arranged and integrally connected with the upper part of the second side of the vertical plate portion, and the wind guide ring portion is located below the wind baffle portion.

[0010] In some example embodiments, the top surface of the wind baffle portion is provided with a wire clamping structure.

[0011] In some example embodiments, the lower volute further comprises a reinforcing plate portion vertically arranged along the up-down direction, located on the second side of the vertical plate portion and below the wind baffle portion, and the wind baffle portion and the vertical plate portion are integrally connected with the reinforcing plate portion.

[0012] In some example embodiments, the lower volute cover portion comprises an arc-shaped wall with a concave side facing upward, one end of the arc-shaped wall adjacent to the vertical plate portion is integrally connected with the lower part of the vertical plate portion, and an end wall located on the side of the arc-shaped wall away from the vertical plate portion and integrally connected with one end of the arc-shaped wall away from the vertical plate portion, the lower part of the vertical plate portion, the arc-shaped wall and the end wall enclose the lower accommodating groove.

[0013] The embodiments of the present application also provide a heat pump water heater comprising the machine head assembly of any of the above embodiments.

[0014] The head assembly provided by the embodiment of the present application is used for a heat pump water heater, and the head assembly is arranged at the upper portion of the water tank assembly of the heat pump water heater, so that when the motor is damaged, the heat pump water heater does not need to be disassembled from the wall body, and only the upper volute shell module needs to be disassembled from the bottom to the top on the head assembly, and then the motor can be disassembled by disassembling the upper volute shell module on the ground, so that the process of disassembling the motor is simple and difficult.

[0015] Additional features and advantages of the present application will be set forth in the description that follows, and in part will be apparent from the description, or can be learned by practice of the present application. The objectives and other advantages of the present application will be realized and attained by the structure particularly pointed out in the description and claims. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings are included to provide a further understanding of the present application and are incorporated in and constitute a part of this specification, illustrate embodiments of the present application and serve to explain the principles of the present application, and are not intended to limit the present application.

[0017] Figure 1 A perspective structural schematic view of the head assembly provided by some embodiments is shown in the figure;

[0018] Figure 2 A structural schematic view of an assembly mode of the head assembly shown in the figure; Figure 1

[0019] Figure 3 A structural schematic view of another assembly mode of the head assembly shown in the figure; Figure 1

[0020] Figure 4 An exploded structural schematic view of the head assembly shown in the figure; Figure 1

[0021] Figure 5 A perspective structural schematic view of the upper volute shell in the figure; Figure 4

[0022] Figure 6 A perspective structural schematic view of the lower volute shell in the figure; Figure 4

[0023] Figure 7 A perspective structural schematic view of the upper bearing base in the figure; Figure 4

[0024] ​​​​​​Figure 8 As Figure 1 The rear view structure schematic diagram of the assembled lower spiral case, upper spiral case and bearing base;

[0025] Figure 9 As Figure 8 The cross-sectional view schematic diagram of the structure shown;

[0026] Figure 10 As Figure 9 The enlarged structure schematic diagram of A part in the figure.

[0027] Corresponding relationship between the reference signs and the component names is as follows:

[0028] 100 lower spiral case, 110 vertical plate part, 120 air guide ring part, 130 lower spiral cover part, 131 arc-shaped wall, 132 end wall, 140 lower containing groove, 150 wind baffle part, 151 wire clamping structure, 160 reinforcing plate part, 200 upper spiral case, 210 upper containing groove, 240 clamping rib, 250 first boss, 260 positioning part, 300 motor, 400 wind wheel, 500 heat exchanger, 700 bearing base, 710 second boss, 720 matching part. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the present application more clear, the embodiments of the present application will be described in detail below with reference to the drawings. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other in any manner without conflict.

[0030] The present application provides a lower spiral case 100, as Figure 6 shown, the lower spiral case 100 is an integral injection molding structure, and the lower spiral case 100 comprises: a vertical plate part 110, the vertical plate part 110 is provided with a wind passing hole; an air guide ring part 120, the air guide ring part 120 is located in the wind passing hole and is integrally connected with the hole wall of the wind passing hole; and a lower spiral cover part 130, the lower spiral cover part 130 is located at the lower part of the first side of the vertical plate part 110 and is integrally connected with the vertical plate part 110, the lower spiral cover part 130 and the lower part of the vertical plate part 110 enclose a lower containing groove 140 with the notch facing upward, and the lower part of the air guide ring part 120 is located on the side wall of the lower containing groove 140.

[0031] The lower spiral case 100 integrates the vertical plate part 110, the air guide ring part 120 and the lower spiral cover part 130, so that there is no air leakage between the vertical plate part 110 and the lower spiral cover part 130, and therefore the lower spiral case 100 is applied to a heat pump water heater, and the heat pump water heater has lower assembly difficulty and better heating performance.

[0032] The one end of the lower volute cover portion 130 towards the stand portion 110 is integrally connected with the lower part of the first side of the stand portion 110, i.e. the lower part of the rear side of the stand portion 110.

[0033] may be, as shown in Figures 1 to 4 , Figure 6 The lower volute cover portion 130 includes an arc-shaped wall 131, the concave side of which faces upwards and the convex side of which faces downwards, and an end wall 132, which is located on the side of the arc-shaped wall 131 away from the stand portion 110 and is integrally connected with the one end of the arc-shaped wall 131 away from the stand portion 110. The lower part of the stand portion 110, the arc-shaped wall 131 and the end wall 132 jointly enclose the lower accommodating groove 140. The lower volute cover portion 130 has a simple structure and is easy to be injection molded.

[0034] In some example embodiments, as shown in Figure 6 The lower volute casing 100 further includes a wind baffle portion 150, which is horizontally arranged and integrally connected with the upper part of the second side of the stand portion 110, and the air guide ring portion 120 is located below the wind baffle portion 150. The lower volute casing 100 is applied to a heat pump water heater, a heat exchanger 500 is arranged below the wind baffle portion 150, and the wind baffle portion 150 is used to prevent the heat exchanger 500 from leaking air upwards.

[0035] The rear end edge of the wind baffle portion 150 is integrally connected with the upper part of the second side of the stand portion 110, i.e. the upper edge of the front side of the stand portion 110, so that there is no air leakage between the stand portion 110 and the wind baffle portion 150. Therefore, the lower volute casing 100 is applied to a heat pump water heater, and the heat pump water heater has a lower assembly difficulty and better heating performance.

[0036] In some examples, as shown in Figure 1 and Figure 6 The top surface of the wind baffle portion 150 is provided with a wire clamping structure 151. The lower volute casing 100 is applied to a heat pump water heater, and the internal wiring of a head assembly of the heat pump water heater can be arranged through the wire clamping structure 151. In this way, the problem of internal wiring disorder of the head portion can be solved.

[0037] may be, as shown in Figure 1 and Figure 6 The wire clamping structure 151 includes a wire clamping groove, a wire clamping buckle and / or a wire clamping hole, all of which can achieve the purpose of the present application, and the design idea is not deviated from the present application. Therefore, it is not repeated here and should be within the protection scope of the present application.

[0038] In some examples, as shown in Figure 6As shown, the lower volute 100 further comprises a reinforcing plate portion 160, which is vertically arranged on the second side of the vertical plate portion 110 and below the wind deflector portion 150, and the wind deflector portion 150 and the vertical plate portion 110 are integrally connected with the reinforcing plate portion 160, so as to improve the structural strength of the wind deflector portion 150, and the wind deflector portion 150 is less likely to be broken and damaged during transportation and carrying.

[0039] As shown, the reinforcing plate portion 160 can be provided with one or two reinforcing plate portions 160. Figure 6 As shown, the reinforcing plate portion 160 can be provided with one or two reinforcing plate portions 160.

[0040] As shown, the reinforcing plate portion 160 can be provided with one or two reinforcing plate portions 160. Figures 1 to 10 As shown, the lower volute 100 further comprises a reinforcing plate portion 160, which is vertically arranged on the second side of the vertical plate portion 110 and below the wind deflector portion 150, and the wind deflector portion 150 and the vertical plate portion 110 are integrally connected with the reinforcing plate portion 160, so as to improve the structural strength of the wind deflector portion 150, and the wind deflector portion 150 is less likely to be broken and damaged during transportation and carrying.

[0041] The head assembly, the upper volute 200 is provided with a positioning part 260, the bearing base 700 is provided with a matching part 720, the positioning part 260 and the matching part 720 are matched in the up-down direction, for preventing the upper volute module (the upper volute integrates the motor and the wind wheel, so the inertia of the upper volute module is relatively large, and the stability is relatively poor, the lower volute is a plastic part, and the upper volute module cannot be effectively limited) from shaking in the horizontal direction relative to the lower volute 100, the scheme uses the bearing base with relatively high structural strength to limit the upper volute module, so that the structural stability of the upper volute module is better, and the upper volute module is less likely to shake and produce abnormal noise after the drop test, and the head assembly is also less likely to have problems such as the upper volute module being damaged by falling and the upper volute module crushing the lower volute 100 during the drop test; furthermore, the head assembly is used for a heat pump water heater, and the head assembly is arranged at the upper part of the water tank assembly of the heat pump water heater, when the motor 300 is damaged, the heat pump water heater does not need to be disassembled from the wall body, and only the upper volute module needs to be disassembled from the bottom to the top of the head assembly, and then the motor 300 can be disassembled by disassembling the upper volute module on the ground, so that the process of disassembling the motor 300 is simple and difficult.

[0042] As shown in Figures 1 to 4 , Figure 7 , the bearing base 700 is arranged as a water collecting disc. As shown in Figure 9 and Figure 10 , the positioning part 260 and the matching part 720 are connected in the up-down direction in the form of plug-in connection (such as plug-in connection of a plug and a slot); or the positioning part 260 and the matching part 720 can be connected in the up-down direction in the form of clamping connection (such as clamping connection of a clamping rib and a clamping groove); or the positioning part 260 and the matching part 720 can be connected in the up-down direction in the form of screw connection (such as screw connection of a through hole, a screw hole and a screw, and the screw can be screwed into the screw hole through the through hole downward); and the like. The above can achieve the purpose of the application, and the design idea is not deviated from the application, and will not be described in detail here, and should be within the protection scope of the application.

[0043] In some embodiments, as shown in Figure 5 , Figure 7 , Figure 9 and Figure 10As shown in the figure, the positioning part 260 is arranged as a positioning rib, the matching part is arranged as a matching groove, the bearing base 700 is provided with a second boss 710, the top of the second boss 710 is provided with a downwardly recessed matching groove, the upper volute 200 is provided with a first boss 250 protruding rearward, the bottom of the first boss 250 is provided with a downwardly protruding positioning rib, the first boss 250 is located above the second boss 710, and the positioning rib is inserted downwardly into the matching groove (at this time, the first boss 250 and the second boss 710 abut or are separated from each other), and the scheme has the advantages of simple structure and easy manufacturing.

[0044] Of course, the top of the second boss can be provided with an upwardly protruding positioning rib, and the bottom of the first boss is provided with an upwardly recessed matching groove, which can also achieve the purpose of the application, and the design idea is not deviated from the design idea of the application, and will not be described here again, and should also belong to the protection range of the application.

[0045] As shown in the figure, Figures 1 to 4 As shown in the figure, the head assembly further comprises a heat exchanger 500, the heat exchanger 500 is located on one side (i.e. the front side) of the lower volute 100 and is fixed on the bearing base 700, one end of the lower volute 100 close to the heat exchanger 500 is fixedly connected with the side plate of the heat exchanger 500, and the other end of the lower volute 100 away from the heat exchanger 500 is fixedly connected with the second boss 710.

[0046] The side plate of the heat exchanger 500 can be provided with a buckle, and one end of the lower volute 100 close to the heat exchanger 500 can be provided with a buckle, and the buckle is buckled in the buckle; or the side plate of the heat exchanger 500 can be provided with a threaded hole, and one end of the lower volute 100 close to the heat exchanger 500 can be provided with a through hole, and a screw is screwed in the threaded hole through the through hole; the second boss 710 can be provided with a through hole, and one end of the lower volute 100 away from the heat exchanger 500 can be provided with a threaded hole, and a screw is screwed in the threaded hole from the rear to the front through the through hole, and the like; all of the above can achieve the purpose of the application, and the design idea is not deviated from the design idea of the application, and will not be described here again, and should also belong to the protection range of the application.

[0047] As shown in the figure, Figure 3 First, the heat exchanger 500 is installed on the bearing base 700, and then the lower volute 100 is installed on the bearing base 700; or as shown in the figure, Figure 2 First, the heat exchanger and the lower volute 100 are assembled together, and then the combined structure of the heat exchanger and the lower volute 100 is installed on the bearing base 700, and the like; all of the above can achieve the purpose of the application, and the design idea is not deviated from the design idea of the application, and will not be described here again, and should also belong to the protection range of the application.

[0048] As shown in the figure, Figures 1 to 4 ,Figure 6 As shown in the drawings, the lower volute 100 is provided for the lower volute 100 of any of the above-mentioned embodiments, and then: the upper volute 200 is arranged at the upper part of the first side of the stand plate part 110 and abuts against the lower volute cover part 130, the upper volute 200 and the upper part of the stand plate part 110 enclose the upper accommodating groove 210 with the notch downward, the upper part of the guide ring part 120 is located at the side wall of the upper accommodating groove 210, the wind wheel 400 is opposite to the inner hole of the guide ring part 120, the upper part of the wind wheel 400 is located at the upper accommodating groove 210, the lower part of the wind wheel 400 is located at the lower accommodating groove 140, the upper accommodating groove 210 and the lower accommodating groove 140 enclose the volute air duct, the top of the upper volute 200 is provided with the air outlet of the volute air duct, and the wind wheel 400 is installed on the transmission shaft of the motor 300. In this way, the head assembly provided by the embodiment of the present application also has all the advantages of the lower volute 100 provided by any of the above-mentioned embodiments, and will not be described here.

[0049] In some embodiments, as shown in Figure 2 , Figure 5 and Figure 6 , the top of the upper volute 200 further extends forwardly with a clamping rib 240, the clamping rib 240 abuts against the top surface of the baffle part 150, and then a screw is screwed downwardly from the top to the baffle part 150, so as to realize the fixed connection of the front part of the upper volute 200 and the front part of the lower volute 100, so that the connection strength of the upper volute 200 and the lower volute 100 is better, and the stability after connection is better.

[0050] Of course, the relative position of the upper volute 200 and the lower volute 100 can be provided with a clamping structure or a plug-in structure, etc., which can realize the purpose of the present application, and the purpose does not deviate from the design idea of the present application, and will not be described here, which should belong to the protection scope of the present application.

[0051] The embodiment of the present application also provides a heat pump water heater (not shown in the drawings), which comprises the head assembly described in any of the above-mentioned embodiments.

[0052] The heat pump water heater has all the advantages of the head assembly provided by any of the above-mentioned embodiments, and will not be described here.

[0053] In the description in the present application, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "edge", "opposite", "four corners", "periphery", "mouth structure" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply 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 on the present application.

[0054] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "connection", "direct connection", "indirect connection", "fixed connection", "installation", "assembly" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; the terms "installation", "connection", "fixed connection" can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0055] Although the embodiments of the present application are disclosed as above, the content described is only the embodiments adopted for the purpose of facilitating the understanding of the present application, and is not intended to limit the present application. Any modification and change in the form and details can be made by any person skilled in the art without departing from the spirit and scope of the present application disclosed, but the patent protection scope of the present application shall be subject to the appended claims.

Claims

1. A head assembly for a heat pump water heater, characterized in that, The application relates to a motor head assembly. The motor head assembly comprises a bearing base, a lower volute arranged above the bearing base and fixed to the bearing base, and an upper volute module comprising an upper volute, a motor and a wind wheel, the motor being fixed to the upper volute, the wind wheel being in transmission connection with a rotating shaft of the motor, the upper volute module being fixed to the lower volute from above, the upper volute and the lower volute forming a volute air duct, and the wind wheel being arranged in the volute air duct. The upper volute is provided with a positioning part, the bearing base is provided with a matching part, the positioning part is matched with the matching part, the upper volute is provided with a first boss, the positioning part is arranged on the first boss, the bearing base is provided with a second boss, and the matching part is arranged on the second boss. One of the positioning part and the matching part is a positioning rib, and the other is a matching groove, the positioning rib and the matching groove being in insertion connection in the up-down direction. The motor head assembly further comprises a heat exchanger fixed to the bearing base, one end of the lower volute close to the heat exchanger being fixed to an edge plate of the heat exchanger, and the other end of the lower volute away from the heat exchanger being fixed to the second boss. The lower volute is of an integral structure and comprises a vertical plate part vertically arranged in the up-down direction and provided with a wind passing hole, a wind guide ring part arranged in the wind passing hole and integrally connected with a hole wall of the wind passing hole, and a lower volute cover part integrally connected with a lower part of a first side of the vertical plate part, the lower volute cover part and the lower part of the vertical plate part forming a lower accommodating groove with an opening facing upwards, a lower part of the wind guide ring part being arranged on a side wall of the lower accommodating groove, the upper volute and an upper part of the vertical plate part forming an upper accommodating groove with an opening facing downwards, an upper part of the wind guide ring part being arranged on a side wall of the upper accommodating groove, and the lower accommodating groove and the upper accommodating groove forming the volute air duct.

2. The nose assembly of claim 1, wherein, The lower volute further comprises a wind baffle part arranged horizontally and integrally connected with an upper part of a second side of the vertical plate part, and the wind guide ring part is arranged below the wind baffle part.

3. The nose assembly of claim 1 or 2, wherein, A wire clamping structure is arranged on a top surface of the wind baffle part. The lower volute further comprises a reinforcing plate part vertically arranged in the up-down direction, the reinforcing plate part being arranged on the second side of the vertical plate part and below the wind baffle part, and the wind baffle part and the vertical plate part being integrally connected with the reinforcing plate part.

4. The nose assembly of claim 1 or 2, wherein, The lower volute cover part comprises an arc-shaped wall with a concave side facing upwards, one end of the arc-shaped wall close to the vertical plate part being integrally connected with the lower part of the vertical plate part, and an end wall arranged on a side of the arc-shaped wall away from the vertical plate part and integrally connected with one end of the arc-shaped wall away from the vertical plate part, the lower part of the vertical plate part, the arc-shaped wall and the end wall forming the lower accommodating groove. The motor head assembly comprises the motor head assembly as claimed in any one of claims 1 to 8. ​ ​ 5. The nose assembly of claim 4, wherein, ​ ​ 6. The handpiece assembly of claim 5, wherein, ​ 7. The handpiece assembly of claim 5, wherein, ​ ​ 8. The handpiece assembly of claim 4, wherein, ​ ​ ​ 9. A heat pump water heater, characterized by, ​

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