Heat pump and dishwasher

Abstract

The present application discloses a heat pump and a dishwasher. The heat pump comprises a pump casing and a heating element, the pump casing is provided with a side wall part and an end cover part, the end cover part is arranged at one end of the side wall part, the other end of the side wall part is adapted for mounting of a driving element, the side wall part is provided with a mounting hole, the end cover part is provided with a water inlet, the heating element is adapted to be inserted into the pump casing from the mounting hole, and connecting terminals of the heating element are exposed out of the side wall part. The mounting hole is formed in the side wall part of the pump casing, and the heating element can be dismounted or mounted from the mounting hole, which is convenient and quick; the connecting terminals of the heating element are exposed out of the side wall part, the water inlet is formed in the end cover part, the water inlet and the connecting terminals of the heating element are located at different positions, and the connecting terminals of the heating element are farther away from a sump than the water inlet, so that a more sufficient safety space is reserved for the connecting terminals of the heating element, and a pipe connected between the water inlet and the sump is as short as possible, thereby improving the hydraulic efficiency.

Description

Heating pumps and dishwashers

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on January 15, 2024, with application number 202410061308.0 and application name “Heating Pump and Dishwasher”, and the Chinese patent application filed with the China Patent Office on January 15, 2024, with application number 202420103329.X and application name “Heating Pump and Dishwasher”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the technical field of dishwashers, and in particular to a heating pump and a dishwasher. Background Art

[0004] The dishwasher has a heating pump, which realizes the transmission and heating of water. The heating pump has a pump housing, a heating element and a driving element. The driving element is installed at one end of the pump housing, and a water inlet is provided at the other end of the pump housing. In related technologies, the heating element needs to be inserted at the end where the pump housing and the driving element are connected and the connecting terminal is exposed from the other end of the pump housing. This will make the connecting terminal and the water inlet closer and the two are roughly in the same direction. Since the water inlet needs to be connected to the water cup through a pipe, and the connecting terminal needs to reserve enough space to realize electrical connection to ensure safety, the heating pump needs to be set away from the water cup, and the pipe connecting the water cup and the water inlet needs to be set longer. The longer pipe will increase the resistance and reduce the hydraulic efficiency.

[0005] Application Contents

[0006] The present application aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the present application proposes a heating pump.

[0007] To achieve the above objectives, the present application discloses a heating pump, comprising:

[0008] A pump housing having a side wall portion and an end cover portion, wherein the end cover portion is provided at one end of the side wall portion and the other end of the side wall portion is suitable for mounting a driving element, the side wall portion is provided with a mounting hole, and the end cover portion is provided with a water inlet; and

[0009] The heating element is suitable for being inserted into the interior of the pump housing through the mounting hole, and the connecting terminal of the heating element is exposed on the side wall portion.

[0010] In some embodiments of the present application, the heating element is adapted to be inserted into the interior of the pump housing through the mounting hole and penetrate the mounting hole, so that the connection terminal of the heating element is exposed on the side wall portion.

[0011] In some embodiments of the present application, the heating pump further includes a cover, which is connected to the side wall portion to cover the mounting hole, and the heating element is suitable for passing through the cover so that the connection terminal of the heating element is exposed on the side wall portion.

[0012] In some embodiments of the present application, the mounting hole includes a first mounting hole and a second mounting hole, and the heating element is suitable for being inserted into the interior of the pump housing from the first mounting hole, and the connection terminal of the heating element passes through the second mounting hole and is exposed on the side wall portion.

[0013] In some embodiments of the present application, the second mounting hole is smaller than the first mounting hole.

[0014] In some embodiments of the present application, along the axial direction of the first mounting hole, the first mounting hole and the second mounting hole at least partially overlap.

[0015] In some embodiments of the present application, the first mounting hole and the second mounting hole are coaxially arranged.

[0016] In some embodiments of the present application, the heating pump further includes a cover connected to the side wall portion to cover the first mounting hole.

[0017] In some embodiments of the present application, the axial direction of the water inlet is perpendicular to the axial direction of the mounting hole.

[0018] In some embodiments of the present application, the end cover portion is further provided with a water outlet.

[0019] In some embodiments of the present application, the end cover portion is further provided with a water outlet channel, the water outlet channel surrounds the water inlet, and the end of the water outlet channel forms the water outlet.

[0020] The present application also discloses a dishwasher, which includes the above-mentioned heating pump.

[0021] The technical solution of the present application provides a mounting hole on the side wall of the pump housing, through which the heating element can be disassembled and assembled conveniently and quickly; after the heating element is installed in the pump housing, the connecting terminal of the heating element will be exposed from the side wall, and the water inlet is provided on the end cover, and the connecting terminal of the heating element and the water inlet are in different positions. When the heating pump is installed in the dishwasher, the connecting terminal of the heating element is away from the water cup relative to the water inlet, leaving more sufficient safety space for the connecting terminal of the heating element. On this basis, the pipe connecting the water inlet and the water cup can be made as short as possible, which is beneficial to improving the hydraulic efficiency of the dishwasher.

[0022] Other advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other designs can be obtained based on the structures shown in these drawings without paying any creative work.

[0024] FIG1 is a schematic diagram of the assembly of a heating pump and a water cup in some embodiments;

[0025] FIG2 is a schematic diagram of a heat pump in some embodiments;

[0026] FIG3 is a schematic diagram of a heat pump in some embodiments;

[0027] FIG4 is an exploded view of a heat pump in some embodiments;

[0028] FIG5 is a schematic diagram of a pump housing in some embodiments;

[0029] FIG6 is a schematic diagram of a pump housing in some embodiments;

[0030] FIG7 is a schematic diagram of a heat pump in some embodiments;

[0031] FIG8 is a schematic diagram of a pump housing in some embodiments.

[0032] Description of Figure Numbers:

[0033] Pump body 1000, pump casing 1100, side wall portion 1110, mounting hole 1111, first mounting hole 11111, second mounting hole 11112, end cover portion 1120, water inlet 1121, water outlet channel 1122, water outlet 1123, sealing cover 1200, heating element 2000, connecting terminal 2100, driving element 3000, water cup 4000.

[0034] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0036] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0037] In this application, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] In addition, the descriptions of "first", "second", etc. in this application are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0039] The first aspect of the present application proposes a heating pump, which will be described in detail below in conjunction with a dishwasher. It can be understood that the heating pump proposed in the present application is not limited to application in dishwashers, but can also be applied to other equipment.

[0040] In some embodiments of the present application, as shown in conjunction with Figures 1 to 6 , a heat pump includes a pump housing 1100 and a heating element 2000, wherein the pump housing 1100 includes an end cover 1120 and a side wall 1110, wherein the end cover 1120 is disposed at one end of the side wall 1110, and the driving element 3000 is mounted to the other end of the side wall 1110. The end cover 1120 is provided with a water inlet 1121, and the side wall 1110 is provided with a mounting hole 1111. The heating element 2000 needs to be inserted into the interior of the pump housing 1100 through the mounting hole 1111 for installation. After the heating element 2000 is installed in place, the connection terminal 2100 of the heating element 2000 needs to be exposed from the side wall 1110.

[0041] A mounting hole 1111 is provided on the side wall 1110 of the pump housing 1100, through which the heating element 2000 can be disassembled and assembled, which is convenient and quick; after the heating element 2000 is installed in the pump housing 1100, the connecting terminal 2100 of the heating element 2000 will be exposed from the side wall 1110, and the water inlet 1121 is provided on the end cover 1120. The connecting terminal 2100 of the heating element 2000 and the water inlet 1121 are in different positions. When the heat pump is installed in the dishwasher, the connecting terminal 2100 of the heating element 2000 is away from the water cup 4000 relative to the water inlet 1121, leaving more sufficient safety space for the connecting terminal 2100 of the heating element 2000. On this basis, the pipe connecting the water inlet 1121 and the water cup 4000 can be made as short as possible, which is beneficial to improving the hydraulic efficiency of the dishwasher.

[0042] Specifically, the heating pump realizes the circulation and heating of water in the dishwasher. The dishwasher has an inner tank, a water cup 4000, a heating pump and a spray arm. The inner tank is used for placing tableware. Generally speaking, the inner tank is provided with a bowl basket, and the tableware is placed on the bowl basket. The water cup 4000 is set on the bottom plate of the inner tank to collect water. The water cup 4000 can be integrally formed with the bottom plate of the inner tank, or the water cup 4000 is a separate component relative to the bottom plate of the inner tank. The water cup 4000 and the bottom plate of the inner tank are connected together by connecting means. The water inlet 1121 of the heating pump is connected to the water cup 4000 through a pipeline, and the water outlet 1123 of the heating pump is connected to the spray arm through a pipeline. The spray arm is set inside the inner tank.

[0043] When the dishes need to be washed, a certain amount of water will be introduced into the inner tank until it reaches a predetermined water level, which is slightly higher than the bottom plate of the inner tank. At this time, the water has filled the water cup 4000, and the heating pump is controlled to start. The heating pump sucks the water in the water cup 4000 and transports it to the spray arm. The spray arm is provided with a spray hole, and water is sprayed from the spray hole. By setting the angle of the spray hole, the spray arm is driven to rotate synchronously under the reaction force of the water spraying, so that the sprayed water flow is sprayed towards the tableware to flush the tableware. The water that flushes the tableware falls back to the bottom plate of the inner tank and flows back to the water cup 4000 to be sucked by the heating pump, thus forming a washing cycle. Therefore, the heating pump is also called a washing pump or a circulation pump.

[0044] When the dishwasher starts working, the water flowing into the inner tank is mostly municipal water, and the temperature of this water is room temperature or slightly lower than room temperature. When washing dishes, the temperature needs to be raised to a certain extent to achieve high-temperature washing, which is beneficial to improve the cleaning effect. Therefore, the heating pump needs to be integrated with a heating element 2000, and the water is heated synchronously during the process of being sucked and transported by the heating pump.

[0045] The heat pump includes a drive element 3000, a pump body 1000, and a heating element 2000. The drive element 3000 is a power output mechanism, for example, the drive element 3000 is a motor. The power output by the drive element 3000 drives the impeller of the pump body 1000 to rotate, thereby achieving water suction and delivery. The pump body 1000 includes a pump housing 1100 and an impeller. The pump housing 1100 is a hollow structure with a certain space. The impeller is arranged inside the pump housing 1100 and is connected to the power output shaft of the drive element 3000. The drive element 3000 drives the impeller to rotate inside the pump housing 1100. The pump housing 1100 is provided with a water inlet 1121 and a water outlet 1123. The impeller drives water to enter the interior of the pump housing 1100 through the water inlet 1121 and then discharge from the interior of the pump housing 1100 through the water outlet 1123. The heating element 2000 is a component capable of heating water, for example, the heating element 2000 is a heating tube.

[0046] In the related art, the pump housing 1100 is formed with an open end, and the drive element 3000 is installed to the open end of the pump housing 1100, so that the power output shaft and the impeller can be connected. The portion of the pump housing 1100 opposite to the open end (the other end) is provided with a water inlet 1121, so that water can flow to the impeller through the water inlet 1121 and then be driven and discharged by the impeller. Because the heating element 2000 needs to heat the water entering the interior of the pump housing 1100, when assembling the pump body 1000, the heating element 2000 and the drive element 3000, it is necessary to first insert the heating element 2000 from the open end of the pump housing 1100 into the interior of the pump housing 1100, and the connection terminal 2100 of the heating element 2000 needs to pass through the portion of the pump housing 1100 opposite to the open end (the other end), so that the connection terminal 2100 of the heating element 2000 is very close to the water inlet 1121.

[0047] The so-called connection terminals 2100 of the heating element 2000 are structures that require electrical connections, such as wires to power the heating element 2000. Therefore, sufficient space must be reserved for the connection terminals 2100 of the heating element 2000 to achieve electrical connections to ensure safety. To this end, the entire heat pump must be away from the water cup 4000. Furthermore, because the water inlet 1121 needs to be connected to the water cup 4000 via a pipe, a long pipe is required to connect the water inlet 1121 and the water cup 4000. The longer the pipe, the greater the resistance, which is detrimental to hydraulic efficiency.

[0048] To this end, in this embodiment, the pump housing 1100 includes a sidewall portion 1110 and an end cover portion 1120. It is understood that the so-called sidewall portion 1110 and end cover portion 1120 may be two components connected together, or the pump housing 1100 may be an integrally formed structure with the sidewall portion 1110 and the end cover portion 1120 artificially divided. The end cover portion 1120 is provided at one end of the sidewall portion 1110, while the drive element 3000 is mounted to the other end of the sidewall portion 1110. For example, when the impeller is mounted inside the pump housing 1100, the sidewall portion 1110 surrounds the impeller, while the end cover portion 1120 is located axially opposite the impeller. The sidewall portion 1110 is provided with a mounting hole 1111. When the heating element 2000 is mounted, the heating element 2000 can be inserted into the pump housing 1100 through the mounting hole 1111, thereby connecting to the pump housing 1100.

[0049] For example, when assembling a heat pump, the driving element 3000 and the impeller can be assembled together first, and then the driving element 3000 and the impeller can be assembled into the pump housing 1100, and finally the heating element 2000 can be inserted from the outside to the inside through the mounting hole 1111 and installed into the pump housing 1100. Alternatively, the heating element 2000 can be inserted from the outside to the inside through the mounting hole 1111 and installed into the pump housing 1100, and then the driving element 3000 and the impeller can be assembled, and finally the driving element 3000 and the impeller can be installed into the pump housing 1100. In this way, when the heating element 2000 fails, the heating element 2000 can be disassembled and assembled through the mounting hole 1111 without disassembling the driving element 3000, which is more convenient and quick.

[0050] It can be understood that the so-called heating element 2000 is inserted into the interior of the pump housing 1100 , and it can be regarded as inserted into the interior of the pump housing 1100 as long as part of the heating element 2000 is located inside the pump housing 1000 .

[0051] Furthermore, when the heating element 2000 is inserted into the pump housing 1100 through the mounting hole 1111, the connecting terminals 2100 of the heating element 2000 need to be exposed from the side wall 1110. Exposing the connecting terminals 2100 from the side wall 1110 means exposing them between the ends of the side wall 1100 (between the end cap 1120 and the driving element 3000). Because the water inlet 1121 is located on the end cap 1120, the water inlet 1121 and the connecting terminals 2100 of the heating element 2000 are located at different positions (orientations) rather than being squeezed together (as compared to the related art mentioned above). Therefore, after the heat pump is installed in the dishwasher, even if the heat pump is relatively close to the water cup 4000, the connecting terminals 2100 of the heating element 2000 have ample safe space to achieve electrical connection. This allows the pipe connecting the water inlet 1121 and the water cup 4000 to be as short as possible, which improves hydraulic efficiency.

[0052] The heating element 2000 is inserted into the pump housing 1100 through the mounting hole 1111 , and there are various solutions for exposing the connection terminal 2100 of the heating element 2000 to the side wall portion 1110 .

[0053] For example, in combination with Figures 7 and 8, in some embodiments of the present application, the heating element 2000 can be inserted into the interior of the pump housing 1100 from the mounting hole 1111, and the heating element 2000 needs to be in a state of being penetrated by the mounting hole 1111, so that the connection terminal 2100 of the heating element 2000 is exposed relative to the side wall portion 1110.

[0054] Specifically, when installing the heating element 2000, the heating element 2000 is moved from the outside to the inside, with the bottom of the heating element 2000 (the connection terminal 2100 of the heating element 2000 is the head of the heating element 2000) aligned with the mounting hole 1111. The bottom of the heating element 2000 passes through the mounting hole 1111 and is inserted and installed into the interior of the pump housing 1100. When the heating element 2000 is inserted and installed in the preset position, the entire heating element 2000 appears to be inserted into the mounting hole 1111. At this time, the connection terminal 2100 of the heating element 2000 does not pass through the mounting hole 1111, but is located outside the mounting hole 1111 and exposed relative to the side wall portion 1110.

[0055] With this solution, the side wall portion 1110 can be provided with only one mounting hole 1111, through which the heating element 2000 is inserted and exposed. This reduces the number of mounting holes 1111, thereby ensuring the pressure-bearing performance of the pump housing 1100, reducing processing difficulty and cost, and reducing the probability of water leakage. It is understood that since the heating element 3000 needs to pass through the mounting hole 1111, sealing treatment is required, such as applying glue or providing a sealing ring.

[0056] Continuing with Figures 7 and 8, in some embodiments of the present application, the heating pump also includes a cover 1200, which is used to connect to the side wall portion 1110, so that the cover 1200 can cover the mounting hole 1111, and the cover 1200 is also provided with holes, so that the heating element 2000 can pass through the holes of the cover 1200 to be installed on the cover 1200, so that the connection terminal 2100 of the heating element 2000 is exposed relative to the side wall portion 1110, which makes the heating element 2000 easier to install.

[0057] Specifically, for some commonly used heating elements 2000, when the bottom of the heating element 2000 is aligned with the mounting hole 1111 and inserted into the predetermined position, the heating element 2000 may not be easily connected and fixed to the side wall portion 1110. Alternatively, the bottom of the heating element 2000 occupies a much larger space than the space occupied by the connecting terminal 2100. To ensure that the heating element 2000 can be inserted into the predetermined position, the size of the mounting hole 1111 must be adapted to the bottom of the heating element 2000. When the heating element 2000 is inserted into the predetermined position, a large gap remains between the connecting terminal 2100 of the heating element 2000 and the edge of the mounting hole 1111, making it difficult to secure the heating element 2000. To this end, in this embodiment, by providing a cover 1200 with a hole, the cover 1200 and the heating element 2000 can be assembled together first, so that the heating element 2000 is passed through the cover 1200, and then the cover 1200 and the heating element 2000 are assembled as a whole to the side wall portion 1110, which is convenient and quick, so that the connecting terminal 2100 is exposed relative to both the cover 1200 and the side wall portion 1110.

[0058] It can be understood that since the heating element 2000 needs to be inserted into the cover 1200, the cover 1200 needs to cover the mounting hole 1111. In order to prevent water from leaking out from between the heating element 2000 and the cover 1200, and from between the cover 1200 and the side wall portion 1110, in some embodiments of the present application, the heating pump includes a first sealing ring and a second sealing ring. The first sealing ring is arranged between the cover 1200 and the heating element 2000, and the cover 1200 and the heating element 2000 jointly clamp the first sealing ring. The second sealing ring is arranged between the cover 1200 and the side wall portion 1110, and the cover 1200 and the side wall portion 1110 jointly clamp the second sealing ring. In this way, sealing is achieved by the first sealing ring and the second sealing ring to prevent water leakage.

[0059] The heating element 2000 can also be inserted into the interior of the pump housing 1100 in the following manner.

[0060] As shown in Figures 1 to 6, in some embodiments of the present application, the mounting holes 1111 include two, namely the second mounting hole 11112 and the first mounting hole 11111. The heating element 2000 can be inserted into the interior of the pump housing 1100 from the first mounting hole 11111. During the insertion of the heating element 2000, the connecting terminal 2100 of the heating element 2000 passes through the second mounting hole 11112 to the outside, thereby realizing that the connecting terminal 2100 of the heating element 2000 is exposed relative to the side wall portion 1110.

[0061] Specifically, when installing the heating element 2000, operate the heating element 2000 to move from the outside to the inside, align the connecting terminal 2100 of the heating element 2000 with the first mounting hole 11111 and move the heating element 2000 so that the connecting terminal 2100 of the heating element 2000 passes through the first mounting hole 11111 and is inserted into the interior of the pump housing 1100, and continue to move the heating element 2000 so that the connecting terminal 2100 passes through the second mounting hole 11112 from the inside to the outside and is exposed, such as so that the connecting terminal 2100 of the heating element 2000 is exposed relative to the side wall portion 1110, and the rest of the heating element 2000 is located inside the pump housing 1100.

[0062] By setting the second mounting hole 11112 and the first mounting hole 11111, when fixing the heating element 2000 and the pump housing 1100, the operator can support the heating element 2000 through the first mounting hole 11111 to ensure that the position of the heating element 2000 relative to the side wall portion 1110 does not change, thereby facilitating the fixing operation.

[0063] In some embodiments of the present application, in combination with Figures 5 and 6, the first mounting hole 11111 is designed to be larger than the second mounting hole 11112, so that the part of the heating element 2000 located inside the pump housing 1100 can occupy a larger area in space, thereby improving the heating efficiency of water.

[0064] Specifically, generally speaking, because the connection terminal 2100 of the heating element 2000 needs to pass through the second mounting hole 11112 and be exposed, the second mounting hole 11112 should not be designed to be too large. Otherwise, it will require a high degree of sealing and easily cause water leakage. Therefore, in the related art, the second mounting hole 11112 needs to be designed to be relatively small. In other words, to facilitate wiring, the two connecting ends of the connection terminal 2100 of the heating element are relatively close together. In this way, the second mounting hole 11112 is adapted to the size of the connection terminal 2100, so that the second mounting hole 11112 is not designed to be too large.

[0065] In other words, second mounting hole 11112 is much smaller than the internal space of pump housing 1100. To improve water heating efficiency, the portion of heating element 2000 located within pump housing 1100 needs to occupy as much space as possible. If only second mounting hole 11112 is provided, heating element 2000 needs to pass through second mounting hole 11112 and be inserted into the interior of pump housing 1100. To ensure smooth passage of heating element 2000 through second mounting hole 11112, the portion of heating element 2000 inserted into pump housing 1100 needs to be designed to fit within second mounting hole 11112, meaning it cannot occupy a larger area. This is not conducive to rapid water heating.

[0066] In this embodiment, by providing second mounting hole 11112 alongside first mounting hole 11111, first mounting hole 11111 can be designed to be larger, allowing only the entire heating element 2000 to pass through, while second mounting hole 11112 can be designed to be smaller, allowing only the connection terminal 2100 of heating element 2000 to pass through. This allows the portion of heating element 2000 inserted into pump housing 1100 to occupy a larger area, facilitating water heating. After installation, heating element 2000 does not need to be exposed through first mounting hole 11111, which greatly simplifies sealing first mounting hole 11111.

[0067] It can be understood that the so-called first mounting hole 11111 is larger than the second mounting hole 11112. The heating element 2000 can pass through the first mounting hole 11111 as a whole, but the heating element 2000 cannot pass through the second mounting hole 11112 as a whole. The second mounting hole 11112 is only for the connecting terminal 2100 of the heating element 2000 to pass through.

[0068] In other words, the projection area of ​​the first mounting hole 11111 is larger than the projection area of ​​the second mounting hole 11112. For example, the second mounting hole 11112 and the first mounting hole 11111 are circular / elliptical / waisted, and the first mounting hole 11111 is designed to be larger. Of course, the second mounting hole 11112 and the first mounting hole 11111 can be irregular shapes.

[0069] In some embodiments of the present application, the second mounting hole 11112 is designed to at least partially overlap with the first mounting hole 11111 along the axial direction of the first mounting hole 11111, thereby further improving the installation convenience of the heating element 2000.

[0070] Specifically, the so-called at least partial overlap means that at least part of the first mounting hole 11111 and at least part of the second mounting hole 11112 overlap along the axial direction of the first mounting hole 11111, that is, along the axial direction of the first mounting hole 11111, at least part of the second mounting hole 11112 can be observed through the first mounting hole 11111.

[0071] In this way, the second mounting hole 11112 and the first mounting hole 11111 will not deviate too much from the axial direction of the first mounting hole 11111, and the heating element 2000 can pass through the first mounting hole 11111 and the second mounting hole 11112 in sequence without making large adjustments / angles, and the heating element 2000 can extend roughly along the axial direction of the first mounting hole 11111 without excessive bending, which makes the manufacture of the heating element 2000 more convenient.

[0072] In some embodiments of the present application, the axial direction of the first mounting hole 11111 and the axial direction of the second mounting hole 11112 are designed to be coaxially arranged. The so-called coaxial arrangement means that the axis passing through the center of the first mounting hole 11111 is coaxial with the axis passing through the second mounting hole 1112. For example, assuming that the second mounting hole 11112 and the first mounting hole 11111 are circular holes, then the second mounting hole 11112 and the first mounting hole 11111 have a center, and their respective axes are made through the center, and the two axes are coaxial.

[0073] The second mounting hole 11112 and the first mounting hole 11111 are coaxially arranged. When installing the heating element 2000, the heating element 2000 first passes through the first mounting hole 11111, and then continues to move along the coaxial direction of the two to facilitate the connection terminal 2100 of the heating element 2000 to pass through the second mounting hole 11112. The design of the heating element 2000 is more symmetrical, making it easier to install.

[0074] When the mounting hole 1111 includes the second mounting hole 11112 and the first mounting hole 11111, the second mounting hole 11112 and the first mounting hole 11111 need to be sealed respectively. Similar to what was mentioned above, the heating pump includes a third sealing ring. The third sealing ring is arranged between the side wall portion 1110 and the heating element 2000. The heating element 2000 and the side wall portion 1110 jointly clamp the third sealing ring. In this way, sealing is achieved through the third sealing ring to prevent water from leaking out of the second mounting hole 1112. For example, the third sealing ring can be a rubber ring, a silicone ring, or other elastic structure (the same applies to the first sealing ring and the second sealing ring). The third sealing ring is arranged between the heating element 2000 and the side wall portion 1110. When the heating element 2000 is fixed to the pump housing 1100, the heating element 2000 and the side wall portion 1110 are fastened to each other, thereby forcing the third sealing ring to deform, thereby sealing the gap between the heating element 2000 and the side wall portion 1110 and preventing water leakage from the second mounting hole 11112. There are many ways to connect the heating element 2000 and the pump housing 1100. For example, the heating element 2000 is fastened to the pump housing 1100 by screws.

[0075] When the heating element 2000 is inserted into the pump housing 1100 through the first mounting hole 11111, only the connection terminal 2100 of the heating element 2000 can be exposed through the second mounting hole 11112, while the rest of the heating element 2000 is entirely located inside the pump housing 1100. Therefore, the sealing of the first mounting hole 11111 can be performed in the simplest and most effective manner. For example, in conjunction with Figures 2 and 4, in some embodiments of the present application, the heat pump further includes a second sealing ring and a cover 1200. The cover 1200 is used to connect to the side wall portion 1110 to be fixed to each other, thereby shielding the first mounting hole 11111, and the sealing ring is disposed between the side wall portion 1110 and the cover 1200, thereby sealing the first mounting hole 11111.

[0076] Specifically, the shape of the cover 1200 needs to be adapted to the first mounting hole 11111. When the cover 1200 and the side wall portion 1110 are connected, the cover 1200 blocks the first mounting hole 11111. Generally speaking, the cover 1200 needs to withstand water pressure. Therefore, similar to the pump housing 1100, the cover 1200 also needs to have a certain structural strength. A second sealing ring needs to be provided between the cover 1200 and the side wall portion 1110 to achieve sealing. The second sealing ring can be a rubber ring, a silicone ring, or other elastic structure. The second sealing ring can be provided between the periphery of the first mounting hole 11111 and the cover 1200. During the connection process of the cover 1200 and the side wall portion 1110, pressure is applied to the second sealing ring, causing the second sealing ring to deform and thereby seal the gap between the cover 1200 and the side wall portion 1110, thereby preventing water from leaking out of the first mounting hole 11111.

[0077] In some embodiments of the present application, the cover 1200 is connected to the side wall portion 1110 through the following scheme, and the side wall portion 1110 and the cover 1200 are fixed to each other through a snap connection. Specifically, the side wall portion 1110 is connected to the cover 1200 through a snap structure, and the snap structure includes a male snap and a female snap. One of the side wall portion 1110 and the cover 1200 is provided with a male snap, and the other of the side wall portion 1110 and the cover 1200 is provided with a female snap. When installing the cover 1200, align the male snap and the female snap with each other until the male snap and the female snap are snapped together. In this way, the cover 1200 and the side wall portion 1110 can be conveniently connected together. The snap connection also facilitates the disassembly between the cover 1200 and the side wall portion 1110.

[0078] In some embodiments of the present application, the cover 1200 can also be connected to the side wall portion 1110 through the following scheme, and the side wall portion 1110 and the cover 1200 are fixed to each other through a threaded connection. Specifically, the side wall portion 1110 includes a flange surrounding the first mounting hole 11111, and the flange is provided with an external thread, and the cover 1200 is provided with an internal thread that matches the external thread of the flange. The cover 1200 is tightened to make the internal thread and the external thread engage, so that the cover 1200 is installed on the side wall portion 1110 to achieve covering of the first mounting hole 11111. During the tightening process of the cover 1200, the second sealing ring will be compressed to form a seal.

[0079] In some embodiments of the present application, the cover 1200 can also be connected to the side wall portion 1110 through the following scheme: the cover 1200 is rotatably connected to the side wall portion 1110, and the cover 1200 is also snap-fitted to the side wall portion 1110, and the first mounting hole 11111 can be opened and blocked through the rotatable connection and the snap-fitting connection. Specifically, the cover 1200 and the side wall portion 1110 are rotatably connected through the cooperation of a rotating shaft and an axial hole. For example, a rotating shaft is provided on one side of the cover 1200, and an axial hole is provided on the corresponding side wall portion 1110. The cover 1200 and the side wall portion 1110 are snap-fitted through a snap-fit ​​structure. For example, a male buckle is provided on the other side of the cover 1200, and a female buckle is provided on the corresponding side wall portion 1110. Through the rotatable connection and the snap connection, when the cover 1200 opens the first mounting hole 11111, the cover 1200 will not completely separate from the side wall portion 1110 due to the rotatable connection, thereby avoiding the loss of the cover 1200 during disassembly and maintenance.

[0080] In some embodiments of the present application, in combination with Figures 5, 6 and 8, the axial design of the mounting hole 1111 is perpendicular to the axial direction of the water inlet 1121, including the axial direction of the first mounting hole 11111 being perpendicular to the axial direction of the water inlet 1121, and also including the axial direction of the second mounting hole 11112 being perpendicular to the axial direction of the water inlet 1121. This facilitates the design of the pump casing 1100 and maximizes the use of space for the connection terminal 2100 of the heating element 2000. The following description will be made using the mounting hole 1111 as an example.

[0081] Specifically, for example, sidewall portion 1110 is substantially cylindrical, while end cover portion 1120 is substantially hood-shaped. When the impeller is mounted within pump housing 1100, the impeller's axial direction is aligned with water inlet 1121. Water entering pump housing 1100 through water inlet 1121 can reach the impeller via the shortest possible flow path. Connecting terminal 2100 of heating element 2000 can extend axially along mounting hole 1111, rather than being tilted relative to sidewall portion 1110, thereby maximizing space utilization.

[0082] In some embodiments of the present application, in combination with Figures 4 and 8, in addition to the water inlet 1121, the end cover 1120 is also provided with a water outlet 1123. The water outlet 1123 also needs to be connected to the spray arm through a pipeline. The water outlet 1123 is set on the end cover 1120, so that the connecting terminal 2100 of the heating element 2000 is also away from the water outlet 1123, and the pipeline connected to the water outlet 1123 will not occupy the space where the connecting terminal 2100 of the heating element 2000 is located, which is more conducive to the electrical connection of the connecting terminal 2100.

[0083] Furthermore, continuing with Figures 4 and 8, in order to facilitate the flow of water out of the water outlet 1123, the end cover 1120 is also provided with a water outlet channel 1122, and the water outlet channel 1122 surrounds the water inlet 1121. The water outlet channel 1122 can completely surround the water inlet 1121, or it can partially surround the water inlet 1121. Under the driving action of the impeller, the water will be thrown toward the side wall portion 1110 along the rotation direction of the impeller, and the water outlet channel 1122 will surround the water inlet 1121, so as to better receive the water thrown out from the impeller, thereby guiding the water to the water outlet 1123 and reducing the water flow resistance.

[0084] The second aspect of the present application further discloses a dishwasher, which includes a heating pump of the above-mentioned embodiment. It can be understood that the heating pump of the dishwasher of this embodiment adopts the technical solution of the above-mentioned embodiment, and therefore has at least the beneficial effects brought by the technical solution of the above-mentioned embodiment, which will not be repeated here.

[0085] The above description is only a preferred embodiment of the present application and does not limit the patent scope of the present application. All equivalent structural transformations made based on the contents of the present application specification and drawings, or direct / indirect application in other related technical fields, are included in the patent protection scope of the present application.

Claims

1. A heat pump, wherein, Comprising: A pump housing having a side wall portion and an end cover portion, one end of the side wall portion being provided with the end cover portion, the other end of the side wall portion being adapted to mount a driving element, the side wall portion being provided with a mounting hole, and the end cover portion being provided with a water inlet; and A heating element adapted to be inserted into the interior of the pump housing through the mounting hole, and connection terminals of the heating element being exposed outside the side wall portion.

2. The heat pump according to claim 1, wherein, The heating element is adapted to be inserted into the interior of the pump housing through the mounting hole and pass through the mounting hole, so that the connection terminals of the heating element are exposed outside the side wall portion.

3. The heat pump according to claim 2, wherein The heating pump further includes a cover, the cover being connected to the side wall portion to cover the mounting hole, and the heating element being adapted to pass through the cover, so that the connection terminals of the heating element are exposed outside the side wall portion.

4. The heat pump according to any one of claims 1 to 3, wherein, The mounting hole includes a first mounting hole and a second mounting hole, the heating element being adapted to be inserted into the interior of the pump housing through the first mounting hole, and the connection terminals of the heating element passing through the second mounting hole to be exposed outside the side wall portion.

5. The heat pump according to claim 4, wherein, The second mounting hole is smaller than the first mounting hole.

6. The heat pump according to claim 4 or 5, wherein, Along the axial direction of the first mounting hole, the first mounting hole and the second mounting hole at least partially overlap.

7. The heat pump according to claim 6, wherein, The first mounting hole and the second mounting hole are coaxially arranged.

8. The heat pump according to any one of claims 4 to 7, wherein, The heating pump further includes a cover, the cover being connected to the side wall portion to cover the first mounting hole.

9. The heat pump according to any one of claims 1 to 8, wherein, The axial direction of the water inlet is perpendicular to the axial direction of the mounting hole.

10. The heat pump according to any one of claims 1 to 9, wherein, The end cover portion is further provided with a water outlet.

11. The heat pump according to claim 10, wherein, The end cover portion is further provided with a water outlet flow channel, the water outlet flow channel surrounding the water inlet, and the end of the water outlet flow channel forms the water outlet.

12. A dishwasher, wherein, Comprising the heating pump according to any one of claims 1 to 11.

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