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 shell, a first air inlet and a second air outlet, the air outlet mesh enclosure is arranged at the second air opening and protrudes out of the outer circumferential surface of the shell; comprising a fan box and a fan mechanism, the fan box is vertically arranged in the shell and provided with a first air passing channel, a second air passing channel is formed between the fan box and the second air opening, and a wind wheel of the fan is arranged in the first air passing channel; the end, facing the air outlet net cover, of the wind wheel extends into the air outlet net cover from the first air passing channel through the second air passing channel and the second air opening, so that the radial distance between the fan box and the second air opening in the shell is smaller, the installation space of the side, opposite to the second air opening, of the fan mechanism in the shell is larger correspondingly, and the heat exchanger is arranged in the installation space; thus, the area of the heat exchanger can be set to be larger, and the scheme can improve the capacity and the energy efficiency of products.

Description

TECHNICAL FIELD

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

[0002] In view of the heat pump water heater, in order to reduce product cost and improve production efficiency, the shell is usually cylindrical. Due to the limitation of product space, the area of the heat exchanger in the head assembly cannot be made larger, otherwise the space for assembling the compressor, pipeline, electrical control and the like will not be enough. Increasing the area of the heat exchanger can improve the energy efficiency of the product. Therefore, how to improve the capacity and energy efficiency of the product is a technical problem that needs to be solved by those skilled in the art. CONTENT OF THE UTILITY MODEL

[0003] The head assembly of the heat pump water heater provided by the embodiments of the present application comprises: a shell, a second air outlet is arranged on the peripheral wall of the shell; an air outlet mesh cover is arranged at the second air outlet and protrudes from the outer peripheral surface of the shell; a fan mechanism comprising a fan box and a fan, the fan box is arranged vertically in the shell and is provided with a first air passage, a second air passage is formed between the fan box and the second air outlet, the first air passage is connected to the inside of the air outlet mesh cover through the second air passage and the second air outlet, the fan wheel of the fan is arranged in the first air passage, and one end of the fan wheel facing the air outlet mesh cover extends into the air outlet mesh cover from the first air passage through the second air passage and the second air outlet; and a heat exchanger is arranged on the side of the fan box away from the second air outlet in the shell.

[0004] In some example embodiments, the peripheral wall of the shell is in the shape of a cylindrical ring, the end face shape of one end of the second air passage away from the first air passage is the same as the shape of the outer end face of the second air outlet facing the inside of the shell, and the end face shape of one end of the air outlet mesh cover facing the second air passage is the same as the shape of the outer end face of the second air outlet facing the outside of the shell.

[0005] In some example embodiments, one end of the first air passage facing the second air outlet is provided with an arc-shaped wall; the head assembly further comprises: a mounting member arranged in the shell and on the side of the fan box facing the second air outlet, and the mounting member and the arc-shaped wall jointly enclose the second air passage.

[0006] In some example embodiments, the fan mechanism further comprises: an air guide ring arranged at one end of the first air passage facing the second air passage and arranged to guide the air flow from the first air passage to the second air passage.

[0007] In some example embodiments, the air guide ring comprises: the arc-shaped wall located between the first air passage and the second air passage; and a ring-shaped air guide portion penetrating an end of the first air passage facing the second air passage and connected with the arc-shaped wall, the air guide portion being arranged to guide the air flow from the first air passage to the second air passage.

[0008] In some example embodiments, the mounting member is located above the arc-shaped wall, two lower ends of the mounting member sealingly abutting two upper ends of the arc-shaped wall respectively, an end of the mounting member facing the fan box sealingly abutting an upper part of the air guide portion, the arc-shaped wall being connected with a lower part of the air guide portion, an end of the mounting member facing away from the fan box sealingly abutting an upper part of an outer end surface of the second air outlet facing the interior of the housing, an end of the arc-shaped wall facing away from the fan box sealingly abutting a lower part of the outer end surface of the second air outlet facing the interior of the housing.

[0009] In some example embodiments, the housing comprises: a water pan on which the fan box is vertically arranged; an arc-shaped first side wall and an arc-shaped second side wall, two ends of the second side wall in the circumferential direction of the housing being connected with two ends of the first side wall in the circumferential direction of the housing respectively, the second air outlet being located on the second side wall; and a cover covering an upper part of an area enclosed by the first side wall and the second side wall.

[0010] In some example embodiments, two ends of the second side wall in the circumferential direction of the housing are provided with plug-in portions, and two ends of the first side wall in the circumferential direction of the housing are provided with plug-in matching portions, the plug-in portions being plugged into the plug-in matching portions from top to bottom.

[0011] In some example embodiments, the circumferential wall of the housing is further provided with a first air outlet, the first air outlet and the second air outlet being arranged at intervals in the circumferential direction of the housing, the heat exchanger being a bent heat exchanger, the heat exchanger being located between the first air outlet and the fan box, and a convex side of the heat exchanger facing the first air outlet and a concave side of the heat exchanger facing an end of the first air passage facing away from the second air passage.

[0012] The application also provides a heat pump water heater comprising the head assembly of any of the above example embodiments.

[0013] The technical solution provided by the embodiment of the present application is that the peripheral wall of the shell is provided with a second air outlet, the air outlet mesh cover is provided at the second air outlet and protrudes from the outer peripheral surface of the shell, the fan box is upright in the shell and is provided with a first air passage, and a second air passage is formed between the fan box and the second air outlet, the first air passage is connected with the interior of the air outlet mesh cover through the second air passage and the second air outlet, the fan wheel is provided in the first air passage, and the end of the fan wheel facing the air outlet mesh cover extends from the first air passage through the second air passage and the second air outlet into the air outlet mesh cover, so that the radial distance between the fan box and the second air outlet in the shell is smaller, and the installation space of the fan mechanism in the shell on the side facing away from the second air outlet is larger, and the heat exchanger is provided in the installation space, so that the area of ​​the heat exchanger can be set larger, so this solution can achieve the purpose of improving the capacity and energy efficiency of the product.

[0014] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be achieved and obtained through the structures particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the technical solution of the present invention and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present invention and do not constitute a limitation on the technical solution of the present invention.

[0016] Figure 1 A schematic diagram of the exploded structure of a handpiece assembly provided in some embodiments of the present application;

[0017] Figure 2 for Figure 1 The main structural cross-sectional view of the nose assembly shown;

[0018] Figure 3 for Figure 2 A schematic diagram of the enlarged structure of part A;

[0019] Figure 4 for Figure 1 Schematic diagram of the top view of the head assembly shown.

[0020] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0021] 110 water tray, 120 first side wall, 121 first air outlet, 122 plug-in fitting part, 130 second side wall, 131 second air outlet, 132 plug-in part, 140 cover body, 200 fan mechanism, 210 fan, 211 axial flow fan wheel, 220 fan box, 221 first air passage, 230 second air passage, 240 air guide ring, 241 arc-shaped wall, 242 air guide part, 243 air guide curved surface, 250 mounting piece, 251 clamping edge, 300 air outlet mesh cover, 310 air outlet grille, 400 heat exchanger, 500 compressor. DETAILED DESCRIPTION

[0022] To make the purpose, technical scheme and advantages of the utility model more clearly and clearly, the following will combine the drawings to make a detailed description of the embodiments of the utility model. 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 way without conflict.

[0023] The head assembly of the heat pump water heater provided by the embodiments of the present application comprises a shell, an air outlet mesh cover 300, a fan mechanism 200, and a heat exchanger 400. Figures 1 to 4 As shown in the figure, the shell is provided with a second air outlet 131; the air outlet mesh cover 300 is arranged at the second air outlet 131 and protrudes from the outer circumferential surface of the shell; the fan mechanism 200 comprises a fan box 220 and a fan 210, the fan box 220 is vertically arranged in the shell and is provided with a first air passage 221, a second air passage 230 is formed between the fan box 220 and the second air outlet 131, the first air passage 221 is connected with the inside of the air outlet mesh cover 300 through the second air passage 230 and the second air outlet 131, the fan wheel of the fan 210 is arranged in the first air passage 221, and one end of the fan wheel facing the air outlet mesh cover 300 extends into the air outlet mesh cover 300 from the first air passage 221 through the second air passage 230 and the second air outlet 131; and the heat exchanger 400 is arranged on the side of the fan box 220 away from the second air outlet 131 in the shell.

[0024] The head assembly, since one end of the fan wheel facing the air outlet mesh cover 300 extends into the air outlet mesh cover 300 from the first air passage 221 through the second air passage 230 and the second air outlet 131, the radial distance between the fan box 220 and the second air outlet 131 in the shell is smaller, and the installation space on the side of the fan mechanism 200 in the shell away from the second air outlet 131 is larger, the heat exchanger 400 is arranged in the installation space, so the area of the heat exchanger can be larger, and therefore the scheme can improve the capacity and energy efficiency of the product.

[0025] Among them, as shown in the figure, Figure 1 and Figure 2As shown, the fan 210 includes a motor, a motor bracket, and a wind wheel. The motor bracket is mounted in the housing, the motor is mounted on the motor bracket, and the wind wheel is located on the side of the motor facing the second air port 131 and is mounted on the rotating shaft of the motor. The wind wheel can be configured as an axial flow fan 211.

[0026] In some embodiments, the peripheral wall of the housing is in a cylindrical ring shape. As Figure 2 and Figure 3 As shown, the end face shape of the end of the second air passage 230 facing away from the first air passage 221 is the same as the shape of the outer end face of the second air port 131 facing the inside of the housing, and the end of the second air passage 230 facing away from the first air passage 221 is in sealing abutment with the outer end face of the second air port 131 facing the inside of the housing. The end face shape of the end of the air outlet mesh cover 300 facing the second air passage 230 is the same as the shape of the outer end face of the second air port 131 facing the outside of the housing, and the end of the air outlet mesh cover 300 facing the second air passage 230 is in sealing abutment with the outer end face of the second air port 131 facing the outside of the housing. When the fan 210 is running, the air flow is blown from the first air passage 221 to the inside of the air outlet mesh cover 300 through the second air passage 230 and the second air port 131 in sequence, and finally the air flow is blown from the air outlet mesh cover 300 to the outside of the housing.

[0027] In some examples, as Figures 1 to 3 As shown, the end of the first air passage 221 facing the second air port 131 is provided with an arc-shaped wall 241; the head assembly further includes a mounting member 250 located in the housing and on the side of the fan box 220 facing the second air port 131, and the mounting member 250 and the arc-shaped wall 241 together enclose the second air passage 230. The mounting member 250 is configured as a plastic member, and the upper part of the side of the mounting member 250 facing the fan box 220 is provided with a holding edge 251 protruding in the horizontal direction, which abuts the top surface of the fan box 220 downward.

[0028] In some embodiments, as Figures 1 to 3As shown, the fan mechanism 200 further comprises a wind guide ring 240, which is arranged at one end of the first air passage 221 facing the second air passage 230 and is configured to guide the air flow from the first air passage 221 to the second air passage 230. The wind guide ring 240 comprises an arc-shaped wall 241 located between the first air passage 221 and the second air passage 230, and a ring-shaped wind guide portion 242 arranged at one end of the first air passage 221 facing the second air passage 230 and connected with the arc-shaped wall 241, and the wind guide portion 242 is configured to guide the air flow from the first air passage 221 to the inside of the wind guide portion 242. The end of the wind guide portion 242 inside the first air passage 221 is provided with a ring-shaped wind guide surface 243, which guides the air flow in the first air passage 221 to the inside of the wind guide portion 242. The wind guide surface 243 is in the shape of a bell mouth, and the inner diameter of the wind guide surface 243 gradually increases from the end close to the second air outlet 131 to the end away from the second air outlet 131.

[0029] In some embodiments, as shown in Figures 1 to 3 The mounting member 250 is located above the arc-shaped wall 241, and the two lower ends of the mounting member 250 are in sealing abutment with the two upper ends of the arc-shaped wall 241, respectively. The end of the mounting member 250 facing the fan box 220 is in sealing abutment with the upper part of the outer end surface of the second air outlet 131 facing the inside of the shell, and the end of the arc-shaped wall 241 away from the fan box 220 is in sealing abutment with the lower part of the outer end surface of the second air outlet 131 facing the inside of the shell. In this way, the air flow blown from the first air passage 221 is sequentially blown to the inside of the air outlet mesh cover 300 through the second air passage 230 and the second air outlet 131, and finally blown to the outside of the shell through the air outlet mesh cover 300.

[0030] In some examples, as shown in Figure 1 , Figure 2 and Figure 4 The shell comprises a water pan 110, on which the fan box 220 is vertically arranged; an arc-shaped first side wall 120 and an arc-shaped second side wall 130, the two ends of the second side wall 130 in the circumferential direction of the shell are connected with the two ends of the first side wall 120 in the circumferential direction of the shell, respectively, and the second air outlet 131 is located on the second side wall 130; and a cover 140, which covers the upper part of the area surrounded by the first side wall 120 and the second side wall 130.

[0031] As shown in Figure 1As shown, both ends of the second side wall 130 located in the circumferential direction of the shell are provided with plug-in parts 132, and both ends of the first side wall 120 located in the circumferential direction of the shell are provided with plug-in fitting parts 122. The plug-in parts 132 are plugged into the plug-in fitting parts 122 from top to bottom to realize the assembly of the second side wall 130 and the first side wall 120 together.

[0032] Alternatively, the mounting member 250 , the air outlet grille 300 and the second side wall 130 may be assembled together to form a combined structure, which can be installed and disassembled as a whole, thereby making it easier to repair and replace the fan mechanism 200 .

[0033] In some examples, such as Figure 1 and Figure 2 As shown, the first side wall 120 is provided with a first air outlet 121, and the first air outlet 121 and the second air outlet 131 are spaced apart in the circumferential direction of the shell; Figure 1 and Figure 2 As shown, the heat exchanger 400 is a bent heat exchanger 400, located between the first air port 121 and the fan box 220, with the convex side of the heat exchanger 400 facing the first air port 121 and the concave side facing the end of the first air passage 221 that faces away from the second air passage 230. The two ends of the heat exchanger 400 located in the circumferential direction of the shell are sealed with the two ends of the fan box 220 located in the circumferential direction of the shell, and the compressor 500 is located between the heat exchanger 400 and the fan box 220. When the fan 210 is running, a wind beam is formed in the shell, flowing from the first air port 121 through the heat exchanger 400, the compressor 500, the first air passage 221, the second air passage 230, and the second air port 131 in sequence, toward the interior of the air outlet grille 300. The wind beam is finally blown from the air outlet grille 300 to the outside of the shell.

[0034] It can be, for example Figure 1 and Figure 2 As shown, the end face of the air outlet mesh cover 300 facing the outside of the shell is provided with an air outlet grille 310, and the air beam is blown to the outside of the shell through the air outlet grille 310; the heat exchanger 400 may be in a C shape, a U shape, a V shape, etc., all of which can achieve the purpose of this application, and their purpose does not deviate from the design concept of the present utility model, and will not be repeated here, and should all fall within the scope of protection of this application.

[0035] The heat pump water heater (not shown in the figures) provided in an embodiment of the present application includes the head assembly of the heat pump water heater described in any of the above embodiments.

[0036] This heat pump water heater has all the advantages of the head assembly of the heat pump water heater provided by any of the above embodiments, which will not be described in detail here.

[0037] In summary, the technical scheme provided by the embodiment of the application, the peripheral wall of the shell is provided with a second air outlet, the air outlet mesh cover is arranged at the second air outlet and protrudes from the outer peripheral surface of the shell, the fan box is arranged vertically in the shell and is provided with a first air passing channel, the second air passing channel is formed between the fan box and the second air outlet, the first air passing channel is connected with the inside of the air outlet mesh cover through the second air passing channel and the second air outlet, the fan wheel of the fan is arranged in the first air passing channel, and one end of the fan wheel facing the air outlet mesh cover extends into the air outlet mesh cover from the first air passing channel through the second air passing channel and the second air outlet, so that the radial distance between the fan box and the second air outlet in the shell is smaller, the mounting space on the side of the fan mechanism in the shell away from the second air outlet is larger, the heat exchanger is arranged in the mounting space, so that the area of the heat exchanger can be larger, and therefore the scheme can improve the capacity and energy efficiency of the product.

[0038] In the description of the utility model, it needs to be explained that the terms "upper", "lower", "one side", "another side", "one end", "another 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, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the structure indicated has a specific orientation, is constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0039] In the description of the utility model embodiment, unless otherwise explicitly specified and limited, the terms "connection", "direct connection", "indirect connection", "fixed connection", "installation", "assembly" should be understood in a broad sense, for example, can be fixed connection, can be detachable connection, or integrally connected, and the terms "installation", "connection", "fixed connection" can be directly connected, or indirectly connected through an intermediate medium, and can be the communication between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0040] Although the embodiments disclosed by the utility model are as above, the content described is only the embodiment adopted for the convenience of understanding the utility model, and is not used to limit the utility model. Any person skilled in the art of the utility model can make any modification and change in the implementation form and details without departing from the spirit and range disclosed by the utility model, but the patent protection range of the utility model still needs to be defined by the appended claims.

Claims

1. A head assembly for a heat pump water heater, the head assembly comprising: The application relates to a shell, a second air outlet, an air outlet cover, a fan mechanism, and a heat exchanger. The shell has a cylindrical peripheral wall, the second air passage has an end face shape identical to that of the outer end face of the second air outlet, and the air outlet cover has an end face shape identical to that of the outer end face of the second air outlet. The first air passage has an arc-shaped wall, the fan mechanism further comprises a mounting member, and the mounting member and the arc-shaped wall jointly define the second air passage. The fan mechanism further comprises a wind guide ring arranged at the end of the first air passage facing the second air passage. The wind guide ring comprises the arc-shaped wall and a ring-shaped wind guide part. The mounting member is located above the arc-shaped wall, two lower ends of the mounting member are in sealing abutment with two upper ends of the arc-shaped wall, an end of the mounting member facing the fan box is in sealing abutment with an upper part of the wind guide part, the arc-shaped wall is connected with a lower part of the wind guide part, an end of the mounting member away from the fan box is in sealing abutment with an upper part of the outer end face of the second air outlet facing the shell interior, and an end of the arc-shaped wall away from the fan box is in sealing abutment with a lower part of the outer end face of the second air outlet facing the shell interior.

2. The nose assembly of claim 1, wherein, The shell comprises a water collecting tray, the fan box is vertically arranged on the water collecting tray, the second air outlet is located on an arc-shaped second side wall, a cover is arranged on the upper part of the region surrounded by the first side wall and the second side wall, and the first side wall and the second side wall are connected with each other at two ends in the circumferential direction of the shell.

3. The nose assembly of claim 1 or 2, wherein, ​ ​ 4. The nose assembly of claim 3, wherein, ​ ​ 5. The nose assembly of claim 4, wherein, ​ ​ ​ 6. The nose assembly of claim 5, wherein, ​ 7. The handpiece assembly of claim 1 or 2, wherein, ​ ​ ​ ​ 8. The handpiece assembly of claim 7, wherein, The second side wall is provided with a plug-in part at both ends in the circumferential direction of the shell, and the first side wall is provided with a plug-in matching part at both ends in the circumferential direction of the shell, the plug-in part being plugged into the plug-in matching part from top to bottom.

9. The handpiece assembly of claim 1 or 2, wherein, The circumferential wall of the shell is further provided with a first air outlet, the first air outlet and the second air outlet being arranged at intervals in the circumferential direction of the shell, the heat exchanger being a bent heat exchanger, the heat exchanger being located between the first air outlet and the fan box, and the convex side of the heat exchanger facing the first air outlet and the concave side of the heat exchanger facing one end of the first air passage away from the second air passage.

10. A heat pump water heater, characterized by, A machine head assembly comprising a heat pump water heater as claimed in any one of claims 1 to 9.

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