Heat pump water heater

Abstract

The utility model relates to the technical field of hot water supply equipment, and discloses a heat pump water heater which comprises a shell and a protective cover, an opening is formed in the side wall of the shell, the protective cover covers the opening and is located on the outer surface of the shell, and a sealing ring surrounding the periphery of the opening is arranged at the attaching position of the protective cover and the shell. The sealing ring comprises a sealing body, an inner ring protrusion and an outer ring protrusion, the inner ring protrusion and the outer ring protrusion are connected with the sealing body, and the inner ring protrusion and the outer ring protrusion are arranged on the side, facing the shell, of the sealing body and sequentially surround the peripheral side of the opening. The height of the inner ring protrusion is larger than that of the outer ring protrusion. In the process of installing the protective cover, the inner ring bulge is firstly extruded and sealed with the shell; when the pressing is continued, the inner ring bulge can be continuously compressed, and meanwhile, the outer ring bulge can be gradually extruded and sealed with the shell. Therefore, a double-sealing structure can be formed between the protective cover and the shell, and the problem that the sealing performance of the sealing ring is reduced due to failure of a single sealing structure is avoided.

Description

Technical Field

[0001] This utility model relates to the field of hot water supply equipment technology, and in particular to a heat pump water heater. Background Technology

[0002] A wired control module is installed on the outer surface of the heat pump water heater casing, and then covered by a protective cover. Since the protective cover is typically bolted to the water tank casing, a sealing ring is usually placed between the protective cover and the water tank casing to improve sealing. However, because the surface where the protective cover and the water tank meet is curved, differences in manufacturing processes and precision can easily lead to a mismatch between the roundness of the protective cover and the roundness of the water tank casing. This can result in insufficient compression of the sealing ring during the bonding process, leading to a failure to meet sealing requirements. Utility Model Content

[0003] The technical problem solved by this utility model is to provide a heat pump water heater that effectively solves the problem that the sealing ring may be under pressure during the fitting process between the protective cover and the outer shell of the water tank, resulting in insufficient sealing performance.

[0004] The above-mentioned technical problems are solved by the following technical solutions:

[0005] A heat pump water heater includes: a housing and a protective cover. The housing has an opening on its side wall. The protective cover is disposed over the opening and located on the outer surface of the housing. A sealing ring is provided at the contact point between the protective cover and the housing, surrounding the periphery of the opening. The sealing ring includes a sealing body and an inner ring protrusion and an outer ring protrusion connected to the sealing body. The inner ring protrusion and the outer ring protrusion are located on the side of the sealing body facing the housing and are sequentially arranged around the periphery of the opening. The height of the inner ring protrusion is greater than the height of the outer ring protrusion.

[0006] Compared with the prior art, the heat pump water heater of this utility model has the following advantages: Firstly, by setting a sealing ring around the opening at the contact point between the protective cover and the shell, the gap between the protective cover and the shell can be filled. Secondly, by setting inner and outer ring protrusions of different heights on the sealing body of the sealing ring, with the inner ring protrusion being higher than the outer ring protrusion, during the installation of the protective cover, the inner ring protrusion will first press and seal against the shell; with continued pressing, the inner ring protrusion will continue to compress, while the outer ring protrusion will gradually press and seal against the shell. Thus, even if the sealing performance of the outer ring protrusion fails, the inner ring protrusion can still continue to perform its sealing function, ensuring that the contact point between the protective cover and the shell meets the requirements for dust and water resistance. Furthermore, it allows operators to easily confirm the degree of contact between the outer ring protrusion and the outer surface of the shell during assembly, ensuring that both the inner and outer ring protrusions can effectively perform their functions, thereby enabling the sealing ring to form two "sealing lines" at the contact point between the protective cover and the shell.

[0007] In one embodiment, the sealing body has one of a positioning protrusion and a positioning groove on the side facing the protective cover, and the protective cover has the other of a positioning protrusion and a positioning groove, wherein the positioning protrusion and the positioning groove are inserted into each other.

[0008] In one embodiment, the positioning protrusion is provided on the sealing body; the protective cover includes a cover body and an annular flange surrounding the periphery of the cover body, and the positioning groove is provided on the side of the annular flange facing the positioning protrusion.

[0009] In one embodiment, the inner ring protrusion and the outer ring protrusion are concentrically arranged.

[0010] In one embodiment, the inner surface of the cover body is provided with a snap-fit ​​element for engaging with the inner wall of the housing.

[0011] In one embodiment, the snap-fit ​​component includes a plurality of snaps, which are arranged in pairs along opposite sides of the cover body and snap-fit ​​into the inner wall of the housing.

[0012] In one embodiment, the plurality of the buckles are arranged opposite each other in pairs along the width direction of the cover body; the snap-fit ​​member further includes a limiting buckle disposed on one side of the length direction of the cover body, the limiting buckle being used to limit and engage with the inner wall of the housing.

[0013] In one embodiment, there are multiple limiting buckles, which are disposed at the top of the cover body and spaced apart along its width direction.

[0014] In one embodiment, the bottom edge of the annular flange is provided with a mounting hole, and the housing is provided with a fixing ear corresponding to the mounting hole. The fixing ear is connected to the annular flange by a fastener passing through the mounting hole.

[0015] In one embodiment, the inner surface of the cover body is provided with an annular reinforcing rib and a plurality of connecting ribs disposed between the annular reinforcing rib and the annular flange. Along the thickness direction of the protective cover, the size of the annular reinforcing rib and the connecting ribs are both smaller than the size of the annular flange. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a partial structural schematic diagram of a heat pump water heater according to an embodiment of the present utility model;

[0018] Figure 2 for Figure 1 The diagram shows the structure of the protective cover.

[0019] Figure 3 for Figure 2 A magnified view of part A in the middle;

[0020] Figure 4 for Figure 2 A magnified view of part B in the middle section;

[0021] Figure 5 for Figure 2 A magnified view of part C in the middle;

[0022] Figure 6 for Figure 1 The diagram shows a cross-sectional view of a heat pump water heater.

[0023] Figure 7 for Figure 6 A magnified view of part D in the middle.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Housing; 101. Opening; 102. Fixing ear; 2. Protective cover; 201. Cover body; 2011. Inner surface; 2012. Annular reinforcing rib; 2013. Connecting rib; 202. Annular flange; 2021. Positioning groove; 2022. Mounting hole; 3. Sealing ring; 301. Sealing body; 302. Inner ring protrusion; 303. Outer ring protrusion; 304. Positioning protrusion; 4. Snap-fit ​​component; 401. Buckle; 402. Limit buckle. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0028] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0029] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0030] The following is combined Figures 1 to 7 The following describes embodiments of the present invention.

[0031] According to embodiments of the present invention, such as Figure 1 , Figure 6 and Figure 7 As shown, a heat pump water heater is provided, including: a housing 1 and a protective cover 2. An opening 101 is provided on the side wall of the housing 1. The protective cover 2 is placed on the opening 101 and located on the outer surface of the housing 1. A sealing ring 3 is provided at the joint between the protective cover 2 and the housing 1, surrounding the periphery of the opening 101. The sealing ring 3 includes a sealing body 301 and an inner ring protrusion 302 and an outer ring protrusion 303 connected to the sealing body 301. The inner ring protrusion 302 and the outer ring protrusion 303 are located on the side of the sealing body 301 facing the housing 1 and are sequentially surrounding the periphery of the opening 101. The height of the inner ring protrusion 302 is greater than the height of the outer ring protrusion 303.

[0032] It should be noted that in existing technical solutions, to prevent moisture, particulate matter, and other contaminants from the external environment from entering the interior of the housing 1 through the gap between the protective cover 2 and the housing 1, a sealing gasket is usually placed between the protective cover 2 and the housing 1. However, since the contact surfaces of the protective cover 2 and the housing 1 are arc-shaped, differences in manufacturing processes and precision can easily lead to a mismatch between the roundness of the protective cover 2 and the roundness of the housing 1. This can result in insufficient compression at certain locations of the sealing ring during the bonding process, leading to a failure to meet the sealing requirements.

[0033] Based on the above reasons, this embodiment sets inner ring protrusions 302 and outer ring protrusions 303 of different heights on the sealing body 301 of the sealing ring 3. On the one hand, this allows the sealing ring 3 to form two "sealing defenses" at the contact point between the protective cover 2 and the housing 1, increasing the difficulty for moisture or particulate matter from the external environment to enter the interior of the housing 1. On the other hand, since the height of the inner ring protrusion 302 is greater than that of the outer ring protrusion 303, even if the sealing performance of the outer ring protrusion 303 is compromised, the inner ring protrusion 302 can still continue to perform its sealing function, ensuring that the contact point between the protective cover 2 and the housing 1 meets the requirements for dustproof and waterproof protection. The specific working mechanism is as follows: When the protective cover 2 is installed, the inner ring protrusion 302 will first contact the housing 1 and generate compression, achieving an initial seal. As pressure continues, the inner ring protrusion 302 continues to deform under pressure, while at the same time, the outer ring protrusion 303 also begins to contact the housing 1 and gradually generates compression, thus forming a second seal. The two work together to further enhance the reliability and stability of the sealing ring 3.

[0034] Furthermore, compared to the fact that the height of the outer ring protrusion 303 is higher than that of the inner ring protrusion 302, this embodiment sets the higher inner ring protrusion 302 on the inside. On the one hand, this can prevent the outer ring protrusion 303 from being squeezed out to the outside of the protective cover 2 due to its larger size, thus ensuring the simplicity and aesthetics of the product appearance. On the other hand, it can facilitate the operator to confirm the degree of contact between the outer ring protrusion 303 and the outer surface of the housing 1 during the assembly process, ensuring that both the inner ring protrusion 302 and the outer ring protrusion 303 can effectively perform their own functions, so that the sealing ring 3 can form two "sealing defense lines" at the joint between the protective cover 2 and the housing 1.

[0035] It is understandable that, since the casing 1 of a heat pump water heater is generally cylindrical, meaning the outer surface of the casing 1 is arc-shaped, in order to maintain the integrity of the product's side appearance, the outer surface of the protective cover 2 in this embodiment is also arc-shaped and matches the contour of the outer surface of the casing 1.

[0036] In one embodiment, such as Figure 6 and Figure 7 As shown, the sealing body 301 has one of a positioning protrusion 304 and a positioning groove 2021 on the side facing the protective cover 2, and the protective cover 2 has the other of the positioning protrusion 304 and the positioning groove 2021. The positioning protrusion 304 and the positioning groove 2021 are interlocked. In this embodiment, the positioning protrusion 304 and the positioning groove 2021 can be used to easily and quickly assemble the sealing ring 3 onto the protective cover 2. In this way, the position of the sealing ring 3 between the protective cover 2 and the housing 1 can be determined in advance, simplifying the assembly process and improving assembly efficiency. At the same time, it can also ensure that the sealing ring 3 can accurately fill the gap between the protective cover 2 and the housing 1, ensuring the sealing effect after assembly.

[0037] In one embodiment, such as Figure 2 , Figure 6 and Figure 7 As shown, the positioning protrusion 304 is provided with a sealing body 301; the protective cover 2 includes a cover body 201 and an annular flange 202 surrounding the cover body 201, and a positioning groove 2021 is provided on the side of the annular flange 202 facing the positioning protrusion 304. With the help of the positioning protrusion 304 and the positioning groove 2021, the sealing body 301 can be stably fixed on the annular flange 202. Thus, whether during assembly or after assembly, the inner ring protrusion 302 and the outer ring protrusion 303 on the sealing body 301 can always surround the periphery of the opening 101, thereby effectively filling the gap between the protective cover 2 and the housing 1, ensuring the stability and reliability of the final sealing effect.

[0038] It is understandable that, in order to improve the connection stability between the sealing ring 3 and the protective cover 2, the size of the positioning protrusion 304 can be increased so that the positioning protrusion 304 and the positioning groove 2021 can achieve an interference fit connection.

[0039] In one embodiment, such as Figure 6 and Figure 7 As shown, the inner ring protrusion 302 and the outer ring protrusion 303 are concentrically arranged. In this embodiment, the concentric arrangement of the inner ring protrusion 302 and the outer ring protrusion 303 simplifies the manufacturing process of the sealing ring 3 and reduces the manufacturing difficulty.

[0040] In one embodiment, such as Figures 2 to 4 As shown, the inner surface 2011 of the cover body 201 is provided with a snap-fit ​​member 4, which is used to snap onto the inner wall of the housing 1. In this embodiment, the snap-fit ​​member 4 improves the ease of installing and removing the protective cover 2 and reduces the difficulty of installation and removal. Secondly, by setting the snap-fit ​​member 4 on the inner surface 2011 of the cover body 201, the protective cover 2 can "hide" the snap-fit ​​member 4, making the product's appearance more aesthetically pleasing.

[0041] In one embodiment, such as Figure 2 As shown, the snap-fit ​​component 4 includes multiple snap fasteners 401, which are arranged in pairs along opposite sides of the cover body 201 and snap into the corresponding inner wall of the housing 1. In this embodiment, by providing multiple snap fasteners 401 on opposite sides of the cover body 201, the connection points between the protective cover 2 and the housing 1 are increased, making the protective cover 2 more stably installed on the housing 1. Furthermore, arranging the multiple snap fasteners 401 in pairs ensures uniform force distribution and avoids stress concentration.

[0042] In one embodiment, such as Figures 2 to 4 As shown, multiple latches 401 are arranged in pairs opposite each other along the width direction of the cover body 201; the latching member 4 also includes a limiting latch 402 disposed on one side of the length direction of the cover body 201, the limiting latch 402 being used to limit and engage with the inner wall of the housing 1. Specifically, the free end of the limiting latch 402 is bent along the length direction of the cover body 201 to form a limiting part; the limiting part passes through the opening 101 through its free end and fits against the inner wall of the housing 1. It can be understood that this layout not only allows the protective cover 2 to be stably latched onto the housing 1, but also restricts the movement of the protective cover 2 in the length or thickness direction of the cover body 201.

[0043] In one embodiment, such as Figure 2 and Figure 3As shown, there are multiple limiting buckles 402, which are located at the top of the cover body 201 and spaced apart along its width. In this embodiment, by providing multiple limiting buckles 402, the number of connection points between the cover body 201 and the housing 1 is increased, making the protective cover 2 more stably mounted on the housing 1. Furthermore, arranging multiple limiting buckles 402 spaced apart along the width of the cover body 201 ensures uniform force distribution and avoids stress concentration.

[0044] It should be noted that the multiple limiting buckles 402 in this embodiment can also be set at the bottom of the cover body 201, or part of them can be set at the top of the cover body 201 and the other part can be set at the bottom of the cover body 201.

[0045] In one embodiment, such as Figure 1 and Figure 5 As shown, the bottom edge of the annular flange 202 has a mounting hole 2022, and the housing 1 has a fixing ear 102 corresponding to the mounting hole 2022. The fixing ear 102 is connected to the annular flange 202 by fasteners passing through the mounting hole 2022. With the help of fasteners and fixing ears 102, the connection strength between the protective cover 2 and the housing 1 can be further improved, ensuring that the protective cover 2 can be stably and reliably fixed to the housing 1. It can be understood that setting the mounting hole 2022 on the bottom edge of the annular flange 202 allows the protective cover 2 to cover the mounting hole 2022 and the fixing ear 102, improving the aesthetics of the product.

[0046] Furthermore, the dimension of the fixing ear 102 along the thickness direction of the protective cover 2 can be smaller than the dimension of the annular flange 202. This allows the protective cover 2 to more effectively conceal the fixing ear 102 and the fasteners, making it less likely for the user to notice their presence. In addition, to further enhance the connection strength between the protective cover 2 and the housing 1, multiple fixing ears 102 spaced apart along the width direction of the cover body 201 and mounting holes 2022 corresponding to each fixing ear 102 can be provided at the bottom of the protective cover 2.

[0047] In one embodiment, the inner surface 2011 of the cover body 201 is provided with annular reinforcing ribs 2012 and a plurality of connecting ribs 2013 disposed between the annular reinforcing ribs 2012 and the annular flange 202. Along the thickness direction of the protective cover 2, the dimensions of the annular reinforcing ribs 2012 and the connecting ribs 2013 are all smaller than the dimensions of the annular flange 202. The annular reinforcing ribs 2012 and the connecting ribs 2013 can effectively enhance the structural strength of the protective cover 2, making it less prone to deformation under external pressure and improving the durability of the protective cover 2. Secondly, since the dimensions of the annular reinforcing ribs 2012 and the connecting ribs 2013 are all smaller than the dimensions of the annular flange 202, interference between the annular reinforcing ribs 2012 and the connecting ribs 2013 and the opening 101 can be avoided, ensuring the normal operation of installation and disassembly.

[0048] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0049] The specific embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A heat pump water heater, characterized in that: The device includes a housing (1) and a protective cover (2). The housing (1) has an opening (101) on its side wall. The protective cover (2) covers the opening (101) and is located on the outer surface of the housing (1). The protective cover (2) and the housing (1) are fitted together with a sealing ring (3) that surrounds the opening (101). The sealing ring (3) includes a sealing body (301) and an inner ring protrusion (302) and an outer ring protrusion (303) connected to the sealing body (301). The inner ring protrusion (302) and the outer ring protrusion (303) are located on the side of the sealing body (301) facing the housing (1) and surround the opening (101) in sequence. The height of the inner ring protrusion (302) is greater than the height of the outer ring protrusion (303).

2. The heat pump water heater according to claim 1, characterized in that: The sealing body (301) has one of a positioning protrusion (304) and a positioning groove (2021) on the side facing the protective cover (2), and the protective cover (2) has the other of a positioning protrusion (304) and a positioning groove (2021), and the positioning protrusion (304) and the positioning groove (2021) are inserted into each other.

3. The heat pump water heater according to claim 2, characterized in that: The positioning protrusion (304) is disposed on the sealing body (301); the protective cover (2) includes a cover body (201) and an annular flange (202) surrounding the cover body (201), and the positioning groove (2021) is disposed on the side of the annular flange (202) facing the positioning protrusion (304).

4. The heat pump water heater according to claim 3, characterized in that: The inner ring protrusion (302) and the outer ring protrusion (303) are concentrically arranged.

5. The heat pump water heater according to claim 3, characterized in that: The inner surface (2011) of the cover body (201) is provided with a snap-fit ​​member (4), which is used to snap-fit ​​with the inner wall of the shell (1).

6. The heat pump water heater according to claim 5, characterized in that: The snap-fit ​​component (4) includes multiple snaps (401), which are arranged in pairs along the opposite sides of the cover body (201) and snap-fit ​​into the inner wall of the housing (1).

7. The heat pump water heater according to claim 6, characterized in that: Multiple buckles (401) are arranged opposite each other in pairs along the width direction of the cover body (201); the snap fastener (4) also includes a limiting buckle (402) disposed on one side of the length direction of the cover body (201), the limiting buckle (402) is used to limit and engage with the inner wall of the housing (1).

8. The heat pump water heater according to claim 7, characterized in that: The number of the limiting buckles (402) is multiple, and the multiple limiting buckles (402) are disposed at the top of the cover body (201) and spaced apart along its width direction.

9. The heat pump water heater according to any one of claims 3 to 8, characterized in that: The bottom edge of the annular flange (202) is provided with a mounting hole (2022), and the housing (1) is provided with a fixing ear (102) corresponding to the mounting hole (2022). The fixing ear (102) is connected to the annular flange (202) by fasteners passing through the mounting hole (2022).

10. The heat pump water heater according to any one of claims 3 to 8, characterized in that: The inner surface (2011) of the cover body (201) is provided with an annular reinforcing rib (2012) and a plurality of connecting ribs (2013) provided between the annular reinforcing rib (2012) and the annular flange (202). Along the thickness direction of the protective cover (2), the size of the annular reinforcing rib (2012) and the connecting ribs (2013) are both smaller than the size of the annular flange (202).

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