Heating pump and dish washing machine

Abstract

The heating pump comprises a pump shell and a heating element, the pump shell is provided with a side wall part and an end cover part, one end of the side wall part is provided with the end cover part, the other end of the side wall part is suitable for mounting a driving element, the side wall part is provided with a mounting hole, the end cover part is provided with a water inlet, and the heating element is suitable for being inserted into the pump shell from the mounting hole. And a connecting terminal of the heating element is exposed out of the side wall part. A mounting hole is formed in the side wall part of the pump shell, and the heating element can be disassembled and assembled through the mounting hole, so that convenience and rapidness are achieved; a connecting terminal of the heating element is exposed out of the side wall part, the water inlet is formed in the end cover part, the water inlet and the connecting terminal of the heating element are located at different positions, the connecting terminal of the heating element is far away from the water cup relative to the water inlet, and a more sufficient safety space is reserved for the connecting terminal of the heating element. And a pipeline connected between the water inlet and the water cup can be as short as possible, so that the hydraulic efficiency can be improved.

Description

Technical Field

[0001] This application relates to the technical field of dishwashers, and particularly to a heating pump and a dishwasher. Background Art

[0002] A dishwasher is equipped with a heating pump. The heating pump 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 the related art, the heating element needs to be inserted at the end where the pump housing and the driving element are connected, and the connection terminal is exposed from the other end of the pump housing. This will make the connection terminal and the water inlet relatively close, and the two are generally in the same direction. Since the water inlet needs to be connected to a water cup through a pipeline, and sufficient space needs to be reserved for the connection terminal to achieve electrical connection to ensure safety, the heating pump needs to be set far away from the water cup, and the pipeline connecting the water cup and the water inlet needs to be set longer. The longer pipeline will increase the resistance and reduce the hydraulic efficiency. Summary of the Invention

[0003] This application aims to solve at least one of the technical problems in the related art to some extent. For this purpose, this application proposes a heating pump.

[0004] To achieve the above object, this application discloses a heating pump, which includes:

[0005] A pump housing having a side wall portion and an end cover portion. One end of the side wall portion is provided with the end cover portion, the other end of the side wall portion is adapted to install 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

[0006] A heating element adapted to be inserted into the interior of the pump housing through the mounting hole, and the connection terminal of the heating element is exposed outside the side wall portion.

[0007] In some embodiments of this application, the heating element is adapted to be inserted into the interior of the pump housing through the mounting hole and penetrate through the mounting hole, so that the connection terminal of the heating element is exposed outside the side wall portion.

[0008] In some embodiments of this application, the heating pump further includes a cover, the cover is connected to the side wall portion to cover the mounting hole, and the heating element is adapted to penetrate through the cover, so that the connection terminal of the heating element is exposed outside the side wall portion.

[0009] In some embodiments of this application, the mounting hole includes a first mounting hole and a second mounting hole. The heating element is adapted to be inserted into the interior of the pump housing through the first mounting hole, and the connection terminal of the heating element passes through the second mounting hole to be exposed outside the side wall portion.

[0010] In some embodiments of the present application, the second mounting hole is smaller than the first mounting hole.

[0011] In some embodiments of the present application, along the axial direction of the first mounting hole, at least a part of the first mounting hole and the second mounting hole overlap.

[0012] In some embodiments of the present application, the first mounting hole and the second mounting hole are coaxially arranged.

[0013] In some embodiments of the present application, the heating pump further includes a cover, and the cover is connected to the side wall portion to cover the first mounting hole.

[0014] In some embodiments of the present application, the axial direction of the water inlet is perpendicular to the axial direction of the mounting hole.

[0015] In some embodiments of the present application, the end cover portion is further provided with a water outlet.

[0016] In some embodiments of the present application, the end cover portion is further provided with a water flow channel. The water flow channel surrounds the water inlet, and the end of the water flow channel forms the water outlet.

[0017] The present application also discloses a dishwasher, and the dishwasher includes the above-mentioned heating pump.

[0018] In the technical solution of the present application, a mounting hole is provided in the side wall portion of the pump housing. Through this mounting hole, the disassembly and assembly of the heating element can be realized conveniently and quickly; after the heating element is installed in the pump housing, the connection terminal of the heating element will be exposed from the side wall portion, and the water inlet is arranged in the end cover portion. The connection terminal of the heating element and the water inlet are in different positions. When the heating pump is installed in the dishwasher, the connection terminal of the heating element is far from the water cup relative to the water inlet, leaving a more sufficient safety space for the connection terminal of the heating element. On this basis, the pipeline 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.

[0019] Other advantages of the present application will be partly given in the following description, partly will become obvious from the following description, or be understood through the practice of the present application. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other designs can be obtained based on the structures shown in these drawings.

[0021] Figure 1Schematic diagram of the assembly of a heat pump and a water cup in some embodiments;

[0022] Figure 2 Schematic diagram of a heat pump in some embodiments;

[0023] Figure 3 Schematic diagram of a heat pump in some embodiments;

[0024] Figure 4 Exploded view of a heat pump in some embodiments;

[0025] Figure 5 Schematic diagram of a pump housing in some embodiments;

[0026] Figure 6 Schematic diagram of a pump housing in some embodiments;

[0027] Figure 7 Schematic diagram of a heat pump in some embodiments;

[0028] Figure 8 Schematic diagram of a pump housing in some embodiments.

[0029] Explanation of the reference numerals in the drawings:

[0030] Pump body 1000, pump housing 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, cover 1200, heating element 2000, connection terminal 2100, driving element 3000, water cup 4000.

[0031] The realization of the purpose, functional features and advantages of this application will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of this application will be clearly and completely described with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without making creative efforts belong to the scope of protection of this application.

[0033] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of this application are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0034] In this application, unless otherwise clearly specified or limited, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] In addition, in this application, descriptions such as "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0036] The first aspect of this application proposes a heat pump, which will be described in detail in combination with a dishwasher below. It can be understood that the heat pump proposed in this application is not limited to being applied to a dishwasher and can also be applied to other devices.

[0037] In some embodiments of this application, in combination with Figures 1 to 6 As shown, the heat pump includes a pump housing 1100 and a heating element 2000. Among them, the pump housing 1100 includes an end cover portion 1120 and a side wall portion 1110. The end cover portion 1120 is provided at one end of the side wall portion 1110, and the driving element 3000 is installed at the other end of the side wall portion 1110. The end cover portion 1120 is provided with a water inlet 1121, and the side wall portion 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 portion 1110.

[0038] An installation hole 1111 is provided in the side wall portion 1110 of the pump housing 1100. Through this installation hole 1111, the disassembly and assembly of the heating element 2000 can be realized, which is convenient and fast. After the heating element 2000 is installed in the pump housing 1100, the connection terminal 2100 of the heating element 2000 will be exposed from the side wall portion 1110, while the water inlet 1121 is provided in the end cover portion 1120. The connection terminal 2100 of the heating element 2000 and the water inlet 1121 are in different positions. When the heating pump is installed in the dishwasher, the connection terminal 2100 of the heating element 2000 is farther from the water cup 4000 relative to the water inlet 1121, leaving a more sufficient safety space for the connection terminal 2100 of the heating element 2000. On this basis, the pipeline 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.

[0039] 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, a bowl basket is provided in the inner tank, and the tableware is placed on the bowl basket. The water cup 4000 is arranged on the bottom plate of the inner tank for collecting 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, and the water cup 4000 and the bottom plate of the inner tank are connected together by a 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 arranged inside the inner tank.

[0040] When it is necessary to wash the tableware, a certain amount of water is introduced into the inner tank until a predetermined water level is reached. The predetermined water level is approximately slightly higher than the bottom plate of the inner tank. At this time, the water cup 4000 is already filled with water. The heating pump is controlled to start. The heating pump pumps the water in the water cup 4000 and transports it to the spray arm. Spray holes are provided on the spray arm, and water sprays out from the spray holes. By setting the angle of the spray holes, the spray arm is driven to rotate synchronously under the reaction force of the water spray. In this way, the sprayed water flow shoots towards the tableware to realize the flushing of the tableware. The water flushing the tableware falls back to the bottom plate of the inner tank and flows back to the water cup 4000 to be pumped by the heating pump, thus forming a washing cycle. Therefore, the heating pump is also called a washing pump or a circulation pump.

[0041] When the dishwasher starts to work, most of the water introduced into the inner tank is municipal water, and the temperature of this water is at room temperature or slightly lower than room temperature. When washing the tableware, a certain temperature needs to be raised to achieve high-temperature washing, which is beneficial to improving 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 pumped and transported by the heating pump.

[0042] The heating pump includes a driving element 3000, a pump body 1000 and a heating element 2000. The driving element 3000 is a power output mechanism, for example, the driving element 3000 is a motor. The power output by the driving element 3000 drives the impeller of the pump body 1000 to rotate, thereby realizing the suction and delivery of water. The pump body 1000 includes a pump housing 1100 and an impeller. The pump housing 1100 is an internally hollow structure, surrounded by a certain space. The impeller is arranged inside the pump housing 1100 and connected to the power output shaft of the driving element 3000. The driving 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 pump housing 1100 from the water inlet 1121 and then discharge from 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.

[0043] In the related art, the pump housing 1100 is formed with an open end, and the driving 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 part 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. Since the heating element 2000 needs to heat the water entering the inside of the pump housing 1100, when assembling the pump body 1000, the heating element 2000 and the driving element 3000, the heating element 2000 needs to be inserted into the inside of the pump housing 1100 from the open end of the pump housing 1100, and the connecting terminal 2100 of the heating element 2000 needs to be inserted from the part of the pump housing 1100 opposite to the open end (the other end), so that the connecting terminal 2100 of the heating element 2000 is very close to the water inlet 1121.

[0044] The so-called connection terminal 2100 of the heating element 2000 is a structure that needs to be electrically connected, for example, it needs to be connected with an electric wire to realize power supply to the heating element 2000. Therefore, the connection terminal 2100 of the heating element 2000 needs to reserve sufficient space to realize electrical connection to ensure safety. For this reason, the entire heating pump needs to be far away from the water cup 4000. In addition, since the water inlet 1121 needs to be connected to the water cup 4000 through a pipeline, that is, a long pipeline is required to realize the connection between the water inlet 1121 and the water cup 4000. The longer the pipeline, the greater the resistance generated, which is more unfavorable to the hydraulic efficiency.

[0045] To this end, in the present embodiment, the pump housing 1100 has a side wall portion 1110 and an end cover portion 1120. It can be understood that the so-called side wall portion 1110 and end cover portion 1120 can be two components connected together, or the pump housing 1100 can be an integrally formed structure and the side wall portion 1110 and end cover portion 1120 are artificially divided. The end cover portion 1120 is provided at one end of the side wall portion 1110, and the driving element 3000 is installed at the other end of the side wall portion 1110. For example, when the impeller is installed inside the pump housing 1100, the side wall portion 1110 surrounds the impeller, and the end cover portion 1120 is opposite to the impeller in the axial direction of the impeller. The side wall portion 1110 is provided with a mounting hole 1111. When installing the heating element 2000, the heating element 2000 can be inserted into the interior of the pump housing 1100 through the mounting hole 1111 and thus connected to the pump housing 1100.

[0046] For example, when assembling the heat pump, the driving element 3000 and the impeller can be assembled together first, and then the driving element 3000 and the impeller are assembled into the pump housing 1100. Finally, the heating element 2000 is inserted into the pump housing 1100 from the outside through the mounting hole 1111. Or the heating element 2000 can be inserted into the pump housing 1100 from the outside through the mounting hole 1111 first, and then the driving element 3000 and the impeller are assembled, and finally the driving element 3000 and the impeller are 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 fast.

[0047] It can be understood that when the heating element 2000 is inserted into the interior of the pump housing 1100, it only needs to ensure that a part of the heating element 2000 is located inside the pump housing 1000 to be regarded as being inserted into the pump housing 1100.

[0048] Further, when the heating element 2000 is inserted into the pump housing 1100 through the mounting hole 1111, the connection terminal 2100 of the heating element 2000 needs to be exposed from the side wall portion 1110. The connection terminal 2100 of the heating element 2000 being exposed from the side wall portion 1110 means being exposed between the two ends of the side wall portion 1100 (between the end cover portion 1120 and the driving element 3000). Since the water inlet 1121 is provided in the end cover portion 1120, the water inlet 1121 and the connection terminal 2100 of the heating element 2000 are located at different positions (orientations) and are not crowded together (compared with the related art mentioned above). Then, after the heat pump is installed in the dishwasher, even if the heat pump is relatively close to the water cup 4000, the connection terminal 2100 of the heating element 2000 has sufficient safety space to achieve electrical connection. In this way, the pipeline connecting the water inlet 1121 and the water cup 4000 can be as short as possible, which is beneficial to improving the hydraulic efficiency.

[0049] The heating element 2000 is inserted into the interior of the pump housing 1100 through the mounting hole 1111, and there are various solutions to expose the connection terminal 2100 of the heating element 2000 from the side wall portion 1110.

[0050] For example, as shown in combination with Figure 7 and Figure 8 In some embodiments of the present application, the heating element 2000 can be inserted into the interior of the pump housing 1100 through the mounting hole 1111, and the heating element 2000 needs to be in a state of passing through the mounting hole 1111, so that the connection terminal 2100 of the heating element 2000 is exposed relative to the side wall portion 1110.

[0051] Specifically, when installing the heating element 2000, operate the heating element 2000 to move from outside to inside, align the bottom of the heating element 2000 (the connection terminal 2100 of the heating element 2000 is the head of the heating element 2000) with the mounting hole 1111 and move it. The bottom of the heating element 2000 passes through the mounting hole 1111 and is inserted 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 is in a state of passing through 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 outside the mounting hole 1111 and is exposed relative to the side wall portion 1110.

[0052] With such a solution, only one mounting hole 1111 can be provided in the side wall portion 1110. The heating element 2000 is inserted and exposed through the mounting hole 1111. In this way, the number of mounting holes 1111 can be reduced, and then the pressure-bearing performance of the pump housing 1100 can be ensured, which is beneficial to reducing the processing difficulty and cost, and also beneficial to reducing the probability of water leakage. It can be understood that since the heating element 3000 needs to pass through the mounting hole 1111, sealing treatment needs to be performed, such as applying glue, setting a sealing ring, etc.

[0053] Continuing to combine Figure 7 and Figure 8 As shown, in some embodiments of the present application, the heating pump further includes a cover 1200. The cover 1200 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 a hole position, so that the heating element 2000 can pass through the hole position of the cover 1200 and be arranged on the cover 1200, so that the connection terminal 2100 of the heating element 2000 is exposed relative to the side wall portion 1110, making the heating element 2000 easier to install.

[0054] 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 a predetermined position, it may not be easy to connect and fix the heating element 2000 to the side wall portion 1110. Or rather, the space occupied by the bottom of the heating element 2000 is much larger than that of the connection terminal 2100. In order to enable the heating element 2000 to be inserted into the predetermined position, the size of the mounting hole 1111 should be adapted to the bottom of the heating element 2000. When the heating element 2000 is inserted into the predetermined position, there is still a large gap between the connection terminal 2100 of the heating element 2000 and the edge of the mounting hole 1111, which is inconvenient for fixing. For this reason, in this embodiment, by providing the cover 1200 with a hole position on it, the cover 1200 can be first assembled with the heating element 2000 so that the heating element 2000 passes 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 fast, so that the connection terminal 2100 is exposed relative to both the cover 1200 and the side wall portion 1110.

[0055] It can be understood that since the heating element 2000 needs to be inserted through the cover 1200, and the cover 1200 needs to cover the mounting hole 1111, in order to prevent water from leaking 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 heat pump includes a first sealing ring and a second sealing ring. The first sealing ring is disposed 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 disposed 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 through the first sealing ring and the second sealing ring to prevent water leakage.

[0056] The heating element 2000 can also be inserted into the interior of the pump housing 1100 in the following manner.

[0057] Combined with Figures 1 to 6 As shown, in some embodiments of the present application, the mounting hole 1111 includes 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 process of the heating element 2000, the connection terminal 2100 of the heating element 2000 passes out to the outside through the second mounting hole 11112, so as to expose the connection terminal 2100 of the heating element 2000 relative to the side wall portion 1110.

[0058] Specifically, when installing the heating element 2000, operate the heating element 2000 to move from the outside to the inside, align the connection terminal 2100 of the heating element 2000 and move it towards the first mounting hole 11111. Move the heating element 2000 so that the connection 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. Continue to move the heating element 2000 so that the connection terminal 2100 passes from the inside to the outside through the second mounting hole 11112 and is exposed, such as making the connection terminal 2100 of the heating element 2000 exposed relative to the side wall portion 1110, while the remaining part of the heating element 2000 is located inside the pump housing 1100.

[0059] By providing 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 hold the heating element 2000 through the first mounting hole 11111 to ensure that the heating element 2000 does not change its position relative to the side wall portion 1110, facilitating the fixing operation.

[0060] In some embodiments of the present application, combined with Figure 5 and Figure 6As shown, 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 space range, improving the heating efficiency of water.

[0061] Specifically, generally speaking, since the connection terminals 2100 of the heating element 2000 need to pass through the second mounting hole 11112 and be exposed, the second mounting hole 11112 should not be designed too large, otherwise it will have high requirements for sealing and is prone to water leakage. Therefore, in the related art, the second mounting hole 11112 needs to be designed relatively small. Or rather, for the convenience of wiring of the connection terminals 2100 of the heating element, the two connection ends of the connection terminals 2100 are relatively close to each other, so that the second mounting hole 11112 will be adapted to the size of the connection terminals 2100, making the second mounting hole 11112 not designed too large.

[0062] That is to say, relative to the internal space of the pump housing 1100, the second mounting hole 11112 is much smaller. If the part of the heating element 2000 located inside the pump housing 1100 is to improve the heating efficiency of water, then it needs to occupy as large a range as possible. If only the second mounting hole 11112 is opened, the heating element 2000 needs to pass through the second mounting hole 11112 and be inserted into the inside of the pump housing 1100. In order for the heating element 2000 to pass through the second mounting hole 11112 smoothly, the part of the heating element 2000 inserted into the inside of the pump housing 1100 needs to be designed to be adapted to the second mounting hole 11112, that is, it cannot occupy a larger range, which is not conducive to the rapid heating of water.

[0063] In this embodiment, by providing the second mounting hole 11112 and the first mounting hole 11111, the first mounting hole 11111 can be designed to be larger and can only allow the entire heating element 2000 to pass through, and the second mounting hole 11112 can be designed to be smaller and only allow the connection terminals 2100 of the heating element 2000 to pass through. In this way, the part of the heating element 2000 inserted into the inside of the pump housing 1100 can occupy a larger range, which is beneficial to the heating of water. After the heating element 2000 is installed, the heating element 2000 does not need to be exposed from the first mounting hole 11111, which will be much simpler for sealing the first mounting hole 11111.

[0064] It can be understood that the so-called first mounting hole 11111 being larger than the second mounting hole 11112 means that the entire heating element 2000 can pass through the first mounting hole 11111, but the entire heating element 2000 cannot pass through the second mounting hole 11112, and the second mounting hole 11112 only allows the connection terminals 2100 of the heating element 2000 to pass through.

[0065] That is to say, the projected area of the first mounting hole 11111 is larger than that of the second mounting hole 11112. For example, the second mounting hole 11112 and the first mounting hole 11111 are circular / elliptical / waist-shaped, 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 of irregular shapes.

[0066] In some embodiments of the present application, along the axial direction of the first mounting hole 11111, the second mounting hole 11112 and the first mounting hole 11111 are designed to have at least partial overlap, so as to further improve the installation convenience of the heating element 2000.

[0067] 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.

[0068] In this way, the second mounting hole 11112 and the first mounting hole 11111 will not deviate too much in the axial direction of the first mounting hole 11111. The heating element 2000 can pass through the first mounting hole 11111 and the second mounting hole 11112 in sequence without much adjustment in amplitude / angle, and the heating element 2000 can extend substantially along the axial direction of the first mounting hole 11111 without excessive bending, which is more convenient for the manufacture of the heating element 2000.

[0069] 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 and the axis passing through the second mounting hole 1112 are coaxial. For example, assuming that the second mounting hole 11112 and the first mounting hole 11111 are circular holes, the second mounting hole 11112 and the first mounting hole 11111 have centers, and axes are drawn through the centers respectively, and the two axes are coaxial.

[0070] The coaxial arrangement of the second mounting hole 11112 and the first mounting hole 11111 enables the heating element 2000 to pass through the first mounting hole 11111 first when installing the heating element 2000, and then it is convenient to move the connection terminal 2100 of the heating element 2000 through the second mounting hole 11112 along their coaxial direction. The design of the heating element 2000 is more symmetrical, thus making the installation more convenient.

[0071] When the installation holes 1111 include the second installation hole 11112 and the first installation hole 11111, it is necessary to seal the second installation hole 11112 and the first installation hole 11111 respectively. Similar to what was mentioned before, the heat 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 installation hole 1112. For example, the third sealing ring can be a rubber ring, a silica gel ring or other elastic structures (the same is true for 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 pressing the third sealing ring to deform. In this way, the gap between the heating element 2000 and the side wall portion 1110 is sealed to avoid water leakage from the second installation hole 11112. There are various solutions for the connection between the heating element 2000 and the pump housing 1100. For example, the heating element 2000 is fastened to the pump housing 1100 by means of screw connection.

[0072] When the heating element 2000 is inserted into the pump housing 1100 through the first installation hole 11111, at this time, only the connection terminal 2100 of the heating element 2000 passes through the second installation hole 11112 and is exposed, while the rest of the heating element 2000 is entirely inside the pump housing 1100. Therefore, the simplest and most effective method can be used for the sealing of the first installation hole 11111. For example, in combination Figure 2 and Figure 4 As shown, 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 and fix to the side wall portion 1110 to block the first installation hole 11111, and the sealing ring is arranged between the side wall portion 1110 and the cover 1200, thus sealing the first installation hole 11111.

[0073] Specifically, the shape of the cover 1200 needs to be adapted to the first mounting hole 11111. After the cover 1200 is connected to the side wall portion 1110, the cover 1200 shields the first mounting hole 11111. Generally speaking, the cover 1200 needs to bear 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 silica gel ring or other elastic structures. The second sealing ring can be arranged 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, thereby sealing the gap between the cover 1200 and the side wall portion 1110 and preventing water from leaking out of the first mounting hole 11111.

[0074] In some embodiments of the present application, the cover 1200 is connected to the side wall portion 1110 through the following scheme. The side wall portion 1110 and the cover 1200 are fixedly connected to each other through a snap connection. Specifically, the side wall portion 1110 is snap-connected to the cover 1200 through a snap structure. 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 until they are snapped together, so that the cover 1200 can be conveniently connected to the side wall portion 1110. Through the snap connection, it is also convenient to disassemble the cover 1200 and the side wall portion 1110.

[0075] 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 side wall portion 1110 and the cover 1200 are fixedly connected to each other through a threaded connection. Specifically, the side wall portion 1110 includes a flange surrounding the first mounting hole 11111. 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 screwed so that the internal thread and the external thread engage, thus installing the cover 1200 on the side wall portion 1110 to shield the first mounting hole 11111. During the screwing process of the cover 1200, the second sealing ring will be compressed, thereby forming a seal.

[0076] 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-connected to the side wall portion 1110. The first mounting hole 11111 can be opened and blocked through the rotatable connection and the snap connection. Specifically, the cover 1200 and the side wall portion 1110 are rotatably connected through the cooperation of a rotating shaft and a shaft hole. For example, a rotating shaft is provided on one side of the cover 1200, and a shaft hole is provided on the corresponding side wall portion 1110. The cover 1200 and the side wall portion 1110 are snap-connected through a snap structure. For example, a male snap is provided on the other side of the cover 1200, and a female snap 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, under the action of the rotatable connection, the cover 1200 will not completely separate from the side wall portion 1110, and the loss of the cover 1200 can be avoided during disassembly, assembly and maintenance.

[0077] In some embodiments of the present application, in combination with Figure 5 、 Figure 6 and Figure 8 As shown, the axial direction of the mounting hole 1111 is designed to be perpendicular to the axial direction of the water inlet 1121, including that the axial direction of the first mounting hole 11111 is perpendicular to the axial direction of the water inlet 1121, and also including that the axial direction of the second mounting hole 11112 is perpendicular to the axial direction of the water inlet 1121. In this way, the design of the pump housing 1100 is facilitated, and at the same time, the connection terminals 2100 of the heating element 2000 can make the most of the space. The following will be described by taking the mounting hole 1111 as an example.

[0078] Specifically, for example, the side wall portion 1110 is substantially cylindrical, and the end cover portion 1120 is substantially in the shape of a cover. When the impeller is installed inside the pump housing 1100, the axial direction of the impeller is aligned with the water inlet 1121, so that water enters the inside of the pump housing 1100 through the water inlet 1121 and can contact the impeller along the shortest flow path. The connection terminals 2100 of the heating element 2000 can extend along the axial direction of the mounting hole 1111 without being inclined with respect to the side wall portion 1110, so that the space can be utilized to the maximum extent.

[0079] In some embodiments of the present application, in combination with Figure 4 and Figure 8As shown, in addition to the water inlet 1121, the end cover portion 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. By arranging the water outlet 1123 on the end cover portion 1120, the connection terminal 2100 of the heating element 2000 is also far away from the water outlet 1123, and the pipeline connected to the water outlet 1123 will not occupy the space where the connection terminal 2100 of the heating element 2000 is located, which is more conducive to the electrical connection of the connection terminal 2100.

[0080] Furthermore, continuing to combine Figure 4 and Figure 8 As shown, in order to facilitate the water flow out of the water outlet 1123, the end cover portion 1120 is also provided with a water flow channel 1122. The water flow channel 1122 surrounds the water inlet 1121. The water flow channel 1122 can completely surround the water inlet 1121 or partially surround the water inlet 1121. Driven by the impeller, the water will be thrown towards the side wall portion 1110 along the rotation direction of the impeller. By surrounding the water flow channel 1122 around the water inlet 1121, the water thrown out by the impeller can be better received, so as to guide the water to the water outlet 1123 and reduce the water flow resistance.

[0081] The second aspect of the present application also discloses a dishwasher. The dishwasher includes the heating pump of the above embodiment. It can be understood that the heating pump of the dishwasher in this embodiment adopts the technical solution of the above embodiment. Therefore, it has at least the beneficial effects brought by the technical solution of the above embodiment, which will not be repeated here.

[0082] The above are only the preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structural transformation made under the concept of the present application by using the content of the specification and drawings of the present application, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present application.

Claims

1. A heat pump, characterized in that, 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, characterized in that, 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 claim 1, characterized in that, 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, characterized in that, The second mounting hole is smaller than the first mounting hole.

6. The heat pump according to claim 4, characterized in that, In 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 claim 4, 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 claim 1, characterized in that, The axial direction of the water inlet is perpendicular to the axial direction of the mounting hole.

10. The heat pump according to claim 1, characterized in that, The end cover portion is further provided with a water outlet.

11. The heat pump according to claim 10, characterized in that, 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 forming the water outlet.

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

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