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, the peripheral wall of the shell is provided with a first air opening, and the top wall of the shell is provided with a second air opening; the heat exchanger assembly is arranged in the shell and divides the interior of the shell into a first air duct and a second air duct which communicate with each other, the first air duct is located on one side of the second air duct and comprises a first air opening, and the second air duct comprises a second air opening; the centrifugal fan assembly is arranged on the second air duct; and the compressor is arranged in the second air duct and is positioned below the centrifugal fan assembly. The machine head assembly is applied to the heat pump water heater, the heat exchange area of a heat exchanger of the heat exchanger assembly can be designed to be larger, the centrifugal fan assembly can increase air outlet static pressure, it is guaranteed that the heat pump water heater better meets the air outlet static pressure requirement, and therefore the heat pump water heater with high capacity can be manufactured according to the scheme.

Description

Technical Field

[0001] The utility model relates to heat pump equipment technology, and more specifically, to a heat pump water heater and a head assembly thereof. Background Art

[0002] The existing heat pump water heater has a head including a housing, a heat exchanger assembly, a fan assembly and a compressor. The heat exchanger assembly is vertically arranged in the housing and divides the interior of the housing into an air inlet duct and an air outlet duct. The fan assembly is vertically arranged in the air outlet duct, and the compressor is vertically arranged in the air inlet duct. Since the fan assembly and the compressor are vertically arranged on both sides of the heat exchanger assembly, the heat exchanger of the heat exchanger assembly can only be arranged in the middle of the housing and set as a plate heat exchanger. The heat exchange area of ​​the plate heat exchanger is small, which is also the main reason for the poor heating capacity of the existing heat pump water heater. Moreover, due to the limitation of the internal space of the housing, this solution cannot make a large-capacity heat pump water heater. Utility Model Content

[0003] The embodiment of the utility model provides a head assembly of a heat pump water heater, which is applied to the heat pump water heater and can produce a large-capacity heat pump water heater.

[0004] The embodiment of the utility model also provides a heat pump water heater.

[0005] The head assembly of the heat pump water heater provided in an embodiment of the utility model includes: a shell, the peripheral wall of the shell has a first air outlet, and the top wall of the shell has a second air outlet; a heat exchanger assembly, which is arranged in the shell and divides the interior of the shell into a first air duct and a second air duct that are connected, the first air duct is located on one side of the second air duct, and the first air duct includes the first air outlet, and the second air duct includes the second air outlet; a centrifugal fan assembly, which is arranged in the second air duct; and a compressor, which is arranged in the second air duct and is located below the centrifugal fan assembly.

[0006] In some exemplary embodiments, the centrifugal fan assembly includes: a volute, disposed in the second air duct, the third air outlet of the volute is connected to the interior of the second air duct, and the fourth air outlet of the volute is connected to the second air outlet; a wind wheel and a motor, the wind wheel is disposed in the volute and is transmission-connected to the motor.

[0007] In some exemplary embodiments, the fourth air inlet is located on the peripheral wall of the volute, the third air inlet is located on the end wall of the volute, and the motor is fixed in the third air inlet.

[0008] In some exemplary embodiments, the volute is a split structure.

[0009] In some exemplary embodiments, the heat exchanger assembly includes a heat exchanger and a support frame, the heat exchanger is connected to the support frame, and together divides the interior of the shell into the first air duct and the third air duct, the bottom wall of the shell, the heat exchanger and the support frame together form a fourth air duct, the fourth air duct is located on one side of the first air duct, the third air duct is located above the fourth air duct, the second air outlet is connected to the fourth air duct through the third air duct, the compressor is arranged in the fourth air duct, the upper part of the centrifugal fan assembly is located in the third air duct, and the lower part is located in the fourth air duct, and the second air duct also includes the third air duct and the fourth air duct.

[0010] In some exemplary embodiments, the support frame includes: a separator ring, which is horizontally placed in the shell, and the separator ring, the top wall of the shell and the peripheral wall of the shell above the separator ring together form the third air duct; and a separator plate, the separator plate and the heat exchanger are both vertically arranged below the separator ring, and the heat exchanger is located on one side of the separator plate, the heat exchanger, the separator ring, the bottom wall of the shell and the separator plate together form the fourth air duct, and the fourth air duct is connected with the third air duct through the inner hole of the separator ring, the first air outlet is located on the side of the heat exchanger facing the outside of the fourth air duct, and the side of the heat exchanger facing the outside of the fourth air duct, the peripheral wall of the shell below the separator ring, the separator ring and the bottom wall of the shell together form the first air duct.

[0011] In some exemplary embodiments, the separation ring, the bottom wall of the shell, the peripheral wall of the shell below the separation ring, and a side of the separation plate facing away from the fourth air duct together form an electric control installation cavity.

[0012] In some exemplary embodiments, the heat exchanger is a U-shaped heat exchanger, a C-shaped heat exchanger, or a V-shaped heat exchanger, and the heat exchanger is connected to the partition plate at both ends of the circumference of the shell.

[0013] In some exemplary embodiments, the compressor is a horizontal compressor, and the horizontal compressor is disposed on the bottom wall of the shell.

[0014] The heat pump water heater provided in the embodiment of the utility model comprises a barrel body and a head assembly of the heat pump water heater described in any of the above embodiments, and the bottom wall of the shell is installed on the top of the barrel body.

[0015] The technical solution provided by the embodiment of the utility model is that the heat exchanger assembly is arranged in the shell and divides the interior of the shell into a first air duct and a second air duct that are connected. The first air duct is located on one side of the second air duct, the peripheral wall of the shell has a first air outlet, and the top wall of the shell has a second air outlet. The first air duct includes the first air outlet, and the second air duct includes the second air outlet. The compressor is located in the second air duct, so that the compressor must be located on one side of the heat exchanger of the heat exchanger assembly, and the centrifugal fan assembly is located above the compressor. Therefore, the heat exchanger can be set as a U-shaped heat exchanger, a C-shaped heat exchanger, or a V-shaped heat exchanger. Compared with the plate heat exchanger, the heat exchange area of ​​the U-shaped heat exchanger, the C-shaped heat exchanger, or the V-shaped heat exchanger can be designed to be larger, and the centrifugal fan assembly can increase the static pressure of the outlet air to ensure that the heat pump water heater better meets the static pressure requirement of the outlet air. Therefore, the head assembly of this scheme is applied to the heat pump water heater, the heating capacity of the heat pump water heater can be designed better, and the air outlet noise is small, so that a large-capacity heat pump water heater can be produced.

[0016] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained through the structures particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the technical solution of the utility model 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 utility model and do not constitute a limitation on the technical solution of the utility model.

[0018] Figure 1 A schematic diagram of the three-dimensional structure of a head assembly provided in some embodiments of the present application;

[0019] Figure 2 for Figure 1 The schematic diagram of the front structural section of the nose assembly shown;

[0020] Figure 3 for Figure 1 A schematic diagram of the exploded structure of the nose assembly shown;

[0021] Figure 4 for Figure 3 Schematic diagram of the three-dimensional structure after the centrifugal fan assembly, heat exchanger and bottom wall of the shell are assembled.

[0022] The corresponding relationship between the reference numerals and the component names is as follows:

[0023] 100 housing, 110 first air duct, 111 first air outlet, 120 second air duct, 121 second air outlet, 122 third air duct, 123 fourth air duct, 200 heat exchanger assembly, 210 heat exchanger, 220 support frame, 221 partition ring, 222 partition plate, 300 centrifugal fan assembly, 310 upper cover, 311 first annular wall, 320 lower cover, 321 second annular wall, 330 wind wheel, 340 motor, 350 third air outlet, 360 fourth air outlet, 400 horizontal compressor. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model more clear, the embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other arbitrarily without conflict.

[0025] The heat pump water heater provided in the embodiment of the utility model comprises a barrel body and a head assembly. Figures 1 to 4 As shown, the head assembly includes: a housing 100, the bottom wall of the housing 100 is mounted on the top of the barrel, the peripheral wall of the housing 100 has a first air port 111, and the top wall of the housing 100 has a second air port 121; a heat exchanger assembly 200, the heat exchanger assembly 200 is arranged in the housing 100, and the interior of the housing 100 is divided into a first air duct 110 and a second air duct 120 that are connected, the first air duct 110 is located at one side of the second air duct 120, and the first air duct 110 includes the first air port 111, and the second air duct 120 includes the second air port 121; a centrifugal fan assembly 300, the centrifugal fan assembly 300 is arranged in the second air duct 120; and a compressor, the compressor is arranged in the second air duct 120 and is located below the centrifugal fan assembly 300. Among them, the second air port 121 is located at the top of the second air duct 120, and the first air port 111 is located at the side of the first air duct 110 away from the second air duct 120. The first air duct 110 and the second air duct 120 are communicated with each other through gaps between the fins of the heat exchanger of the heat exchanger assembly 200 .

[0026] The heat exchanger assembly 200 is arranged in the housing 100, and the interior of the housing 100 is divided into a first air duct 110 and a second air duct 120 that are connected. The first air duct 110 is located on one side of the second air duct 120. The peripheral wall of the housing 100 has a first air port 111, and the top wall of the housing 100 has a second air port 121. The first air duct 110 includes the first air port 111, and the second air duct 120 includes the second air port 121. The compressor is located in the second air duct 120, so the compressor must be located on one side of the heat exchanger of the heat exchanger assembly 200, and the centrifugal fan assembly 300 is located Above the compressor, the heat exchanger can be set as a U-shaped heat exchanger, a C-shaped heat exchanger or a V-shaped heat exchanger. Compared with the plate heat exchanger, the heat exchange area of ​​the U-shaped heat exchanger, the C-shaped heat exchanger or the V-shaped heat exchanger can be designed to be larger, and the centrifugal fan assembly 300 can increase the static pressure of the air outlet to ensure that the heat pump water heater better meets the static pressure requirement of the air outlet. Therefore, the head assembly of this scheme is applied to the heat pump water heater, the heating capacity of the heat pump water heater can be better designed, and the air outlet noise is small, so that a large-capacity heat pump water heater can be produced.

[0027] In some examples, such as Figures 2 to 4 As shown, the centrifugal fan assembly 300 includes: a volute, the volute is arranged in the second air duct 120, the third air port 350 of the volute is connected with the inside of the second air duct 120, and the fourth air port 360 of the volute is connected with the second air port 121; a wind wheel 330 and a motor 340, the wind wheel 330 is arranged in the volute and is transmission-connected with the motor 340. This solution has a simple structure and mature technology.

[0028] In some embodiments, Figures 2 to 4 As shown, the fourth air port 360 is located on the peripheral wall of the volute, the third air port 350 is located on the end wall of the volute, and the motor 340 is fixed in the third air port 350, which can effectively reduce the axial size of the centrifugal fan assembly 300, and is more conducive to the arrangement of the centrifugal fan assembly 300 in the second air duct 120. The diameter of the head assembly of this solution is smaller. The fourth air port 360 and the second air port 121 are air outlets, and the first air port 111 and the third air port 350 are air inlets. When the centrifugal fan assembly 300 is running, a wind beam is formed inside the housing 100 from the first air port 111 through the first air duct 110, the heat exchanger, the second air duct 120, the third air port 350, the fourth air port 360 and the second air port 121 in sequence. The second air port 121 is connected to the outside through the air duct.

[0029] The first air outlet 111 is communicated with the room.

[0030] In some embodiments, Figure 3 and Figure 4As shown, the volute is a split structure and includes an upper cover 310 and a lower cover 320, which is more conducive to the rapid installation of the wind wheel 330 in the volute. The side wall of the upper cover 310 is provided with a fourth air outlet 360, one end of the upper cover 310 is provided with a first annular wall 311 and the other end is through, one end of the lower cover 320 is through, and the other end is provided with a second annular wall 321. The upper cover 310 and the lower cover 320 are assembled together, the first annular wall 311 is provided at the through-hole of the lower cover 320, and the second annular wall 321 is provided at the through-hole of the upper cover 310. The inner hole of the first annular wall 311 and the inner hole of the second annular wall 321 are the third air outlet 350, and the motor 340 is fixed in any one of the two third air outlets 350.

[0031] In some examples, such as Figure 3 As shown, the heat exchanger assembly 200 includes a heat exchanger 210 and a support frame 220. The heat exchanger 210 is connected to the support frame 220 and together divides the interior of the shell 100 into a first air duct 110, a third air duct 122 and a fourth air duct 123. The fourth air duct 123 is enclosed by the bottom wall of the shell 100, the heat exchanger 210 and the support frame 220. The fourth air duct 123 is located on one side of the first air duct 110, the third air duct 122 is located above the fourth air duct 123, the second air port 121 is connected to the fourth air duct 123 through the third air duct 122, the compressor is arranged in the fourth air duct 123, the upper part of the centrifugal fan assembly 300 is located in the third air duct 122, and the lower part is located in the fourth air duct 123, and the second air duct 120 includes the second air port 121, the third air duct 122 and the fourth air duct 123.

[0032] Furthermore, if Figure 3 As shown, the support frame 220 includes: a separation ring 221, the separation ring 221 is horizontally placed in the shell 100, the separation ring 221, the top wall of the shell 100 and the surrounding wall of the shell 100 above the separation ring 221 together form a third air duct 122; and a separation plate 222, the separation plate 222 and the heat exchanger 210 are both vertically arranged below the separation ring 221, and the heat exchanger 210 is located on one side of the separation plate 222, the heat exchanger 210, the separation ring 221, and the shell The bottom wall of the shell 100 and the partition plate 222 together form a fourth air duct 123, and the fourth air duct 123 is connected to the third air duct 122 through the inner hole of the partition ring 221. The first air outlet 111 is located on the side of the heat exchanger 210 facing the outside of the fourth air duct 123. The side of the heat exchanger 210 facing the outside of the fourth air duct 123, the peripheral wall of the shell 100 below the partition ring 221, the partition ring 221 and the bottom wall of the shell 100 together form the first air duct 110.

[0033] It can be, for example Figure 3As shown, the partition plate 222 and the partition ring 221 are an integral structure; or the partition plate 222 and the partition ring 221 may be separate structures, etc.; all of the above can achieve the purpose of the present application, and its 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 protection scope of the present application.

[0034] Furthermore, the separation ring 221, the bottom wall of the housing 100, the peripheral wall of the housing 100 below the separation ring 221 and the side of the separation plate 222 facing away from the fourth air duct 123 together form an electric control installation cavity (see Figure 4 The electric control unit is arranged in the electric control installation cavity, making full use of the space between the side of the partition plate 222 facing away from the fourth air duct 123 and the peripheral wall of the shell 100 below the partition ring 221, and the electric control unit includes an electric control box.

[0035] In some embodiments, the heat exchanger 210 is a U-shaped heat exchanger 210 or a C-shaped heat exchanger 210 or a V-shaped heat exchanger 210, and the heat exchanger 210 is connected to the two ends of the circumference of the shell 100 and the two ends of the circumference of the shell 100 with the partition plate 222, that is, the recessed side of the heat exchanger 210 faces the partition plate 222, so that the heat exchange area of ​​the heat exchanger 210 can be designed to be larger. The head assembly is applied to a heat pump water heater, and the heat pump water heater has a better heating capacity.

[0036] For vertical compressors, the vertical compressor is installed on the bottom wall of the shell, and its height is relatively high. When the heat pump water heater is transported horizontally, the top of the vertical compressor swings particularly large, which will cause excessive wear of the shock absorber between the vertical compressor and the bottom wall of the shell. The horizontal transportation of the vertical compressor will also cause oil return problems and cause poor performance of the vertical compressor. Furthermore, when the heat pump water heater is tipped over, the vertical compressor will also be more likely to tear the bottom wall of the shell due to the large swing of the top. Therefore, the heat pump water heater using a vertical compressor can only be transported vertically.

[0037] In some exemplary embodiments, Figures 2 to 4 As shown, the compressor is a horizontal compressor 400, which is installed on the bottom wall of the shell 100. The height of the horizontal compressor 400 on the bottom wall of the shell 100 is significantly lower than that of the vertical compressor. In this way, when the heat pump water heater is transported horizontally, the swing of the top of the horizontal compressor 400 is very small, and the shock-absorbing parts between the horizontal compressor 400 and the bottom wall of the shell 100 are basically not worn. In addition, the horizontal compressor 400 is designed to prevent oil return. Therefore, the horizontal transportation of the heat pump water heater will not affect the performance of the horizontal compressor 400; furthermore, during the tipping test of the heat pump water heater, since the swing of the top of the horizontal compressor 400 is very small, the horizontal compressor 400 is less likely to tear the bottom wall of the shell 100; furthermore, compared with vertical transportation, the heat pump water heater using horizontal transportation has a larger product loading volume.

[0038] Furthermore, the refrigerant pipeline connected to the horizontal compressor 400 is provided between the horizontal compressor 400 and the centrifugal fan assembly 300 (combined with Figure 4 The space between the horizontal compressor 400 and the centrifugal fan assembly 300 is fully utilized, so that the structure of the head assembly is more compact, and the diameter and height are smaller.

[0039] In summary, the technical solution provided by the embodiment of the utility model is that the heat exchanger assembly is arranged in the shell, and the interior of the shell is divided into a first air duct and a second air duct that are connected to each other. The first air duct is located on one side of the second air duct, the peripheral wall of the shell has a first air port, the top wall of the shell has a second air port, the first air duct includes the first air port, the second air duct includes the second air port, and the compressor is located in the second air duct. In this way, the compressor must be located on one side of the heat exchanger of the heat exchanger assembly, and the centrifugal fan assembly is located above the compressor, so the heat exchanger can be It is set as a U-shaped heat exchanger, a C-shaped heat exchanger or a V-shaped heat exchanger. Compared with the plate heat exchanger, the heat exchange area of ​​the U-shaped heat exchanger, the C-shaped heat exchanger or the V-shaped heat exchanger can be designed to be larger, and the centrifugal fan assembly can increase the static pressure of the air outlet, ensuring that the heat pump water heater better meets the static pressure requirement of the air outlet. Therefore, the head assembly of this scheme is applied to the heat pump water heater, the heating capacity of the heat pump water heater can be better designed, and the air outlet noise is small, so that a large-capacity heat pump water heater can be produced.

[0040] In the description of the present invention, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "relative", "four corners", "periphery", "'mouth'-shaped structure" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the 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 invention.

[0041] In the description of the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "connection", "direct connection", "indirect connection", "fixed connection", "installation", and "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", and "fixed connection" can be a direct connection, or an indirect connection through an intermediate medium, or the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0042] Although the implementation methods disclosed in the utility model are as above, the above contents are only implementation methods adopted to facilitate the understanding of the utility model, and are not used to limit the utility model. Any technician in the field to which the utility model belongs can make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed in the utility model, but the scope of patent protection of the utility model shall still be defined by the attached claims.

Claims

1. A head assembly of a heat pump water heater, characterized in that: include: A shell, wherein the peripheral wall of the shell has a first air outlet, and the top wall of the shell has a second air outlet; a heat exchanger assembly, disposed in the shell and dividing the interior of the shell into a first air duct and a second air duct that are connected, wherein the first air duct is located on one side of the second air duct, the first air duct includes the first air outlet, and the second air duct includes the second air outlet; A centrifugal fan assembly is arranged in the second air duct; and The compressor is arranged in the second air duct and below the centrifugal fan assembly.

2. The head assembly according to claim 1, characterized in that: The centrifugal fan assembly comprises: A volute is disposed in the second air duct, the third air port of the volute is connected to the interior of the second air duct, and the fourth air port of the volute is connected to the second air port; A wind wheel and a motor, wherein the wind wheel is arranged in the volute and is drivingly connected to the motor.

3. The head assembly according to claim 2, characterized in that: The fourth air port is located on the peripheral wall of the volute, the third air port is located on the end wall of the volute, and the motor is fixed in the third air port.

4. The head assembly according to claim 2, characterized in that: The volute is a split structure.

5. The head assembly according to any one of claims 1 to 4, characterized in that: The heat exchanger assembly includes a heat exchanger and a support frame, the heat exchanger is connected to the support frame, and together they divide the interior of the shell into the first air duct and the third air duct, the bottom wall of the shell, the heat exchanger and the support frame together form a fourth air duct, the fourth air duct is located on one side of the first air duct, the third air duct is located above the fourth air duct, the second air port is connected to the fourth air duct through the third air duct, the compressor is arranged in the fourth air duct, the upper part of the centrifugal fan assembly is located in the third air duct, and the lower part is located in the fourth air duct, and the second air duct also includes the third air duct and the fourth air duct.

6. The head assembly according to claim 5, characterized in that: The support frame comprises: A separation ring is disposed transversely in the shell, wherein the separation ring, the top wall of the shell and the peripheral wall of the shell above the separation ring together form the third air duct; and A partition plate, the partition plate and the heat exchanger are both erected below the partition ring, and the heat exchanger is located on one side of the partition plate, the heat exchanger, the partition ring, the bottom wall of the shell and the partition plate together form the fourth air duct, the fourth air duct is connected with the third air duct through the inner hole of the partition ring, the first air outlet is located on the side of the heat exchanger facing the outside of the fourth air duct, the side of the heat exchanger facing the outside of the fourth air duct, the peripheral wall of the shell below the partition ring, the partition ring and the bottom wall of the shell together form the first air duct.

7. The head assembly according to claim 6, characterized in that: The separation ring, the bottom wall of the shell, the peripheral wall of the shell below the separation ring and the side of the separation plate facing away from the fourth air duct together form an electric control installation cavity.

8. The head assembly according to claim 6, characterized in that: The heat exchanger is a U-shaped heat exchanger, a C-shaped heat exchanger or a V-shaped heat exchanger, and the heat exchanger is connected to the two ends of the shell in the circumferential direction and the partition plate is connected to the two ends of the shell in the circumferential direction.

9. The head assembly according to any one of claims 1 to 4, characterized in that: The compressor is a horizontal compressor, and the horizontal compressor is arranged on the bottom wall of the shell.

10. A heat pump water heater, characterized in that: The invention comprises a barrel body and a head assembly of a heat pump water heater as claimed in any one of claims 1 to 9, wherein the bottom wall of the shell is mounted on the top of the barrel body.

Images