A heating pump

Abstract

The application discloses a heating pump, which comprises a heating disc, a pump body and a safety assembly. The heating disc is located at one end of the pump body, and the safety assembly is fixed with the heating disc. The safety assembly comprises a first safety device, a second safety device and a connecting piece. The first safety device and the second safety device are respectively fixed or integrated on the connecting piece. The first safety device and the second safety device are respectively fixed with the heating disc and are in heat conduction connection. At least part of the first safety device and the second safety device is located between the connecting piece and the heating disc. In the application, the first safety device and the second safety device are respectively fixed or integrated on the connecting piece to form a modular safety assembly, so that the integration of the safety assembly is improved, and the installation of the first safety device, the second safety device and the heating disc is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of fluid transport technology, and in particular to a heating pump. Background Technology

[0002] Pumps are common devices for transporting fluids. In related technologies, heaters are installed in pumps to heat the fluid during the pumping process, so as to appropriately increase the fluid temperature in some scenarios and improve the working efficiency of related devices. However, the components that are matched with the heaters are relatively scattered and have low integration. Utility Model Content

[0003] The purpose of this invention is to solve at least one of the problems in the background art by providing a heating pump.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A heating pump includes a heating plate, a pump body, and a safety component. The heating plate is located at one end of the pump body, and the safety component is fixed to the heating plate. The safety component includes a first safety device, a second safety device, and a connector. The first safety device and the second safety device are respectively fixed or integrally formed with the connector. The first safety device and the second safety device are respectively fixed to the heating plate and thermally connected. At least a portion of the first safety device and the second safety device is located between the connector and the heating plate.

[0006] In the heating pump of the above technical solution, the first safety device and the second safety device are fixed or integrated with the connector to form a modular safety component, which improves the integration of the safety component. Attached Figure Description

[0007] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0008] Figure 1 This is a schematic diagram of the structure of the heating pump in the first embodiment;

[0009] Figure 2 This is a schematic diagram of the exploded structure of the heating pump according to the first embodiment;

[0010] Figure 3 This is an exploded structural diagram illustrating the structure of the connector, the first safety device, and the second safety device in the first embodiment.

[0011] Figure 4 This is a top view structural diagram of the connector in the first embodiment;

[0012] Figure 5This is a schematic diagram of the connector structure in the first embodiment;

[0013] Figure 6 This is a structural schematic diagram showing the first limiting groove, the first inclined surface, and the second inclined surface in the first embodiment;

[0014] Figure 7 This is a schematic diagram showing the structure of the second limiting groove, the third inclined surface, and the fourth inclined surface in the first embodiment;

[0015] Figure 8 This is an exploded structural diagram illustrating the installation structure of the first safety device and the second safety device in the first embodiment.

[0016] Figure 9 This is a schematic diagram illustrating the structure of the connector in the second embodiment;

[0017] Figure 10 This is a schematic diagram illustrating the structure of the connector, the first safety device, and the second safety device in the third embodiment.

[0018] Figure label:

[0019] 1. Pump body; 2. Heating plate; 201. Plate body; 202. First safety device; 2021. First step; 203. Second safety device; 2031. Second step; 204. Connector; 2041. Bottom wall; 2042. First side wall; 20421. First wall; 20422. Second wall; 2042a. First fixing body; 2042b. Second fixing body; 2042c. First guide wall; 2042d. Second guide wall; 20423. First limiting groove; 20424. First inclined part; 20425. Second inclined part; 2043. Second side wall; 20431. Third wall; 20432. Fourth wall; 2043a. Third fixing body; 2043b. Fourth fixing body; 2043c, Third guide wall; 2043d, Fourth guide wall; 20433, Second limiting groove; 20434, Third inclined surface; 20435, Fourth inclined surface; 205, Thermal bridge; 2051, Protrusion; 2052, Bottom; 206, Heating tube; 207, First electrical contact part; 208, Second electrical contact part; 209, First mounting hole; 2010, Second mounting hole; 2011, First snap-fit ​​part; 20111, First main body part; 20112, First bending part; 2012, Second snap-fit ​​part; 20121, Second main body part; 20122, Second bending part; 2013, Insertion part; 2014, First slot; 2015, First protrusion; 2016, Second slot; 2017, Second protrusion. Detailed Implementation

[0020] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Other technical solutions obtained by those skilled in the art without creative effort are all within the protection scope of the present utility model. Furthermore, it should be understood that the terms "upper," "lower," "left," "right," "longitudinal," "lateral," "inner," "outer," "vertical," "horizontal," "top," and "bottom," etc., indicating orientation or positional relationships, are based solely on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present utility model and simplifying the description. They do not indicate or imply that the device / component must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0021] like Figures 1-10 As shown, a heating pump includes a heating plate 2, a pump body 1, and a safety component. The heating plate 2 is located at one end of the pump body 1. The safety component is fixed to the heating plate 2. The safety component includes a first safety device 202, a second safety device 203, and a connector 204. The first safety device 202 and the second safety device 203 are respectively fixed to the heating plate 2 and thermally connected. The first safety device 202 and the second safety device 203 are respectively fixed to or integral with the connector 204. At least a portion of the first safety device 202 and the second safety device 203 is located between the connector 204 and the heating plate 2.

[0022] In one embodiment, a heat pump is used to deliver fluid to a household appliance. Heating the fluid during delivery can improve the working efficiency of the appliance. For example, when a heat pump is used in a dishwasher, it is installed in the dishwasher body and heats the fluid flowing through it, allowing the detergent to clean dishes and other kitchen utensils in the fluid at a certain temperature, thereby improving the dishwasher's cleaning efficiency. Similarly, when a heat pump is used in a washing machine, it is installed in the washing machine body and heats the fluid inside, allowing the detergent to clean clothes in the fluid at a certain temperature, thereby improving the washing machine's cleaning efficiency.

[0023] In one embodiment, the first safety device 202 is either a thermostat or a circuit breaker, used to control and regulate the heating temperature of the heating element 206. The second safety device 203 is the other of the thermostat and circuit breaker, used to disconnect the circuit when the heating element 206 is dry-burning or the heating temperature is too high and causes a safety hazard, thereby ensuring the safe use of the heat pump. Of course, the first safety device 202 and the second safety device 203 can also be other devices used to protect or regulate the heating temperature of the heating element 206.

[0024] The first safety device 202 and the second safety device 203 can be fixedly installed with the connector 204 respectively, or the first safety device 202, the second safety device 203, and the connector 204 can be directly integrated into a single unit. Preferably, the first safety device 202 and the second safety device 203 are detachably fixedly installed with the connector 204. On the one hand, this allows the first safety device 202, the second safety device 203, and the connector 204 to form an integrated component, which can be assembled and disassembled as a whole, improving the efficiency of assembly and disassembly. Especially in the production and installation of heat pumps on a production line, the first safety device 202 and the second safety device 203 can be first installed as a whole through the connector 204, and then the whole can be installed on the disc 201, greatly improving the installation efficiency and making it very suitable for production lines. On the other hand, the connector 204 ensures the stability of the relative position of the first safety device 202 and the second safety device 203, improving the detection accuracy.

[0025] In one embodiment, at least a portion of the first safety device 202 and the second safety device 203 are located between the connector 204 and the heating plate 2, so that the connector 204 does not directly contact the heating plate 2, reducing the impact of the high temperature of the heating plate 2 on the connector 204 and improving the service life of the connector 204. It is understood that the first safety device 202 and the second safety device 203 are located at the upper end of the heating plate 2, and the connector can be located at the upper end of the first safety device 202 and the second safety device 203, or it can be located at the side end of the first safety device 202 and the second safety device 203. That is, the connector 204 is not directly connected to the heating plate 2, but is connected through the first safety device 202 and the second safety device 203. In all these cases, it should be understood that the first safety device 202 and the second safety device 203 are located between the connector 204 and the heating plate 2.

[0026] The first safety device 202 and the second safety device 203 are respectively thermally connected to the heating plate 2. They can be directly connected to the heating plate 2, or they can be indirectly connected through thermally conductive components, such as through thermal bridges or thermally conductive adhesives.

[0027] In one embodiment, the disc 201 is generally annular in shape, with an opening at its center for fluid to flow through. The disc 201 has a recess surrounding the opening, and the heating body of the heating tube 206 is located in the recess. The two ends of the heating tube 206 are raised and connected to the first safety device 202 and the second safety device 203 respectively through a hard or soft conductive material.

[0028] In one embodiment, the heating plate 2 includes a plate body 201, a heating tube 206, and a thermal bridge 205. The thermal bridge 205 is fixed to the plate body 201. A first safety device 202 and a second safety device 203 are fixed to the thermal bridge 205. The heating tube 206 is disposed on the plate body 201. The thermal bridge 205 partially covers the heating tube 206. The thermal bridge 205 has a protrusion 2051 and a bottom 2052. There is a gap between the protrusion 2051 and the heating tube 206. The bottom 2052 is attached to the heating tube 206. The first safety device 202 is disposed on the protrusion 2051, and the second safety device 203 is disposed on the bottom 2052.

[0029] The thermal bridge 205 is made of thermally conductive materials such as aluminum and can be fixed to the plate 201 by welding or other methods. Part of the thermal bridge 205 is located above the heating tube 206. A gap exists between the protrusion 2051 of the thermal bridge 205 and the heating tube 206, reducing the heat transferred from the heating tube 206 to the second safety device 203 fixed to the protrusion 2051. This reduces the impact of high temperatures on the second safety device 203, ensuring its normal operation. If the second safety device 203 is a resettable thermostat, it detects the temperature within a certain set range. When the detected temperature exceeds this set range, the resettable thermostat automatically trips. When the detected temperature returns to the set range, it can reset and resume normal operation. The resettable thermostat can be used to detect the temperature of the plate 201, as the temperature of the heating tube 206 is clearly visible. The temperature is significantly higher than that of the heating element 206, so direct contact between the resettable thermostat and the heating element 206 should be avoided to reduce the impact of high temperature. The bottom 2052 of the thermal bridge 205 is in contact with the heating element 206, allowing the first safety device 202, fixed to the bottom 2052, to accurately detect the temperature of the heating element 206 and take timely action. If the first safety device 202 is a circuit breaker, it is used to detect the heating temperature of the heating element 206. Accurate detection of the heating element 206's temperature is necessary for overheat protection of the heating pump. When the heating temperature of the heating element 206 exceeds a preset value, there is a certain safety hazard. In this case, the circuit breaker directly disconnects the circuit to protect the heating pump. It is understandable that the thermostat and circuit breaker, as primary and secondary safety devices, provide overheat protection for different locations on the heating pump, enhancing its intelligence.

[0030] In one embodiment, such as Figures 3-5As shown, the safety component includes a connector 2013, which is integrally formed or fixed to the connector 204. The connector 2013 is used to connect to an external wiring connector to supply power to the first safety device 202 and the second safety device 203. The first safety device 202 and the second safety device 203 share a single connector 2013, and the connector 2013 is integrally formed or fixed to the connector 204. Compared to some related technologies where the first safety device 202 and the second safety device 203 need to be connected to external connectors separately, this simplifies the structure of the heat pump, facilitates its assembly and disassembly, and further improves the integration of the heat pump.

[0031] Furthermore, the connector 204 has a through first mounting hole 209 and a second mounting hole 2010, which are located within the area enclosed by the plug-in portion 2013. The safety component includes a first electrical contact portion 207 and a second electrical contact portion 208. A portion of the first electrical contact portion 207 is located in the first mounting hole 209, and a portion of the second electrical contact portion 208 is located in the second mounting hole 2010. One end of the first electrical contact portion 207 is electrically connected to the first safety device 202, and at least a portion of the other end of the first electrical contact portion 207 is located within the area enclosed by the plug-in portion 2013. One end of the second electrical contact portion 208 is connected to the second safety device 203, and at least a portion of the other end of the second electrical contact portion 208 is located within the area enclosed by the plug-in portion 2013.

[0032] In one embodiment, the first safety device 202 and the second safety device 203 are located on both sides below the plug-in portion 2013. The first power-connecting portion 207 and the second power-connecting portion 208 are both L-shaped. One end of the first power-connecting portion 207 is connected to the first safety device 202, and the other end passes through the first mounting hole 209 and is located within the area enclosed by the plug-in portion 2013 for connection to an external wiring connector. Similarly, one end of the second power-connecting portion 208 is connected to the second safety device 203, and the other end passes through the second mounting hole 2010 and is located within the area enclosed by the plug-in portion 2013. Of course, in other embodiments, the first power-connecting portion 207 and the second power-connecting portion 208 may also extend beyond the area enclosed by the plug-in portion 2013.

[0033] In another embodiment, the first mounting device and the second safety device 203 are located below the plug-in portion 2013. The first power-connecting portion 207 and the second power-connecting portion 208 are both elongated. The first power-connecting portion 207 and the second power-connecting portion 208 extend upward from the bottom of the plug-in portion 2013 into the area enclosed by the plug-in portion 2013. The lower ends of the first power-connecting portion 207 and the second power-connecting portion 208 are respectively connected to the first safety device 202 and the second safety device 203.

[0034] In one embodiment, such as Figures 5-7As shown, the connector 204 includes a bottom wall portion 2041, a first side wall portion 2042, and a second side wall portion 2043. The bottom wall portion 2041 connects the first side wall portion 2042 and the second side wall portion 2043. The first side wall portion 2042 includes a first wall 20421 and a second wall 20422 disposed opposite to each other. At least a portion of the first safety device 202 is located between the first wall 20421 and the second wall 20422. The second side wall portion 2043 includes a third wall 20431 and a fourth wall 20432 disposed opposite to each other. At least a portion of the second safety device 203 is located between the third wall 20431 and the fourth wall 20432.

[0035] Furthermore, the first wall 20421 and the second wall 20422 are arranged opposite to each other, and at least a portion of the first safety device 202 is engaged between the first wall 20421 and the second wall 20422, thereby fixing the first safety device 202 to the connector 204. Similarly, the third wall 20431 and the fourth wall 20432 are arranged opposite to each other, and at least a portion of the second safety device 203 is engaged between the third wall 20431 and the fourth wall 20432, thereby fixing the second safety device 203 to the connector 204. This makes it very convenient to assemble and disassemble the first safety device 202 and the connector 204. During installation, first install the first safety device 202 and the second safety device 203 on the disc body 201, and then place the connector 204 above the first safety device 202 and the second safety device 203 and insert it downwards. During disassembly, the connector 204 can be disassembled by using external force to make the first wall 20421 and the second wall 20422 relatively far apart, and the third wall 20431 and the fourth wall 20432 relatively far apart.

[0036] In another embodiment, such as Figure 9 As shown, the connector 204 includes a bottom wall portion 2041, which is fixed to the first safety device 202 and the second safety device 203 respectively. In this embodiment, the first safety device 202 and the second safety device 203 can be directly fixed to the bottom wall portion 2041 by welding, threaded connection or bonding.

[0037] In another embodiment, the connector 204 includes a bottom wall portion 2041, a third side wall portion and a fourth side wall portion (not shown in the figure) located on both sides of the bottom wall portion 2041. The third side wall portion and the fourth side wall portion are continuous walls. The first safety device 202 and the second safety device 203 are both engaged between the third side wall portion and the fourth side wall portion.

[0038] In one embodiment, such as Figure 5As shown, the first wall 20421 has a first guide wall 2042c and a first fixing body 2042a. The width of the first guide wall 2042c is smaller than the width of the first fixing body 2042a. The first guide wall 2042c has a first inclined surface 20424 facing the first safety device 202.

[0039] The first guide wall 2042c is located below the first fixing body 2042a. The first guide wall 2042c is used to guide the first wall 20421 when it first contacts the first safety device 202. The first fixing body 2042a is used to engage the first safety device 202. The first guide wall 2042c has a smaller width, which provides better guidance and avoids difficulty in aligning with the first safety device 202 due to its larger width. The first inclined part 20424 allows the connector 204 to be easily inserted into the first safety device 202. Similarly, the second guide wall 2042d is located below the second fixing body 2042b. The second fixing body 2042b cooperates with the first fixing body 2042a to engage with the first safety device 202. The second guide wall 2042d is used to guide the installation of the first wall 20421 and the first safety device 202. The second guide wall 2042d has a second inclined surface 20425. The structure and principle of the third wall 20431 and the fourth wall 20432 are the same as those of the first wall 20421 and the second wall 20422. The third wall 20431 has a third guide wall 2043c, which has a third inclined surface 20434. The fourth wall 20432 has a fourth guide wall 2043d, which has a fourth inclined surface 20435. These details will not be repeated.

[0040] In one embodiment, at least one of the first fixing body 2042a and the second fixing body 2042b has a first limiting groove 20423, and at least a portion of the first safety device 202 cooperates with the first limiting groove 20423. The first limiting groove 20423 corresponds to a portion of the outer shell of the first safety device 202, such that a portion of the outer shell of the first safety device 202 is installed into the first limiting groove 20423, thereby further improving the installation stability of the connector 204 and the first safety device 202. Specifically, the first limiting groove 20423 is provided on the inner wall of the first fixing body 2042a, and the bottom wall of the first limiting groove 20423 is flush with the inner wall of the first guide wall 2042c; of course, in other embodiments, the first limiting groove 20423 may also be provided on the inner wall of the second fixing body 2042b, or both the first fixing body 2042a and the second fixing body 2042b may be provided with the first limiting groove 20423.

[0041] In one embodiment, such as Figures 5-7As shown, at least one of the third fixing body 2043a and the fourth fixing body 2043b has a second limiting groove 20433, and at least a portion of the second safety device 203 cooperates with the second limiting groove 20433. The structure and principle of the second limiting groove 20433 are the same as those of the first limiting groove 20423, and the second limiting groove 20433 increases the installation stability of the connector 204 and the second safety device 203.

[0042] In another embodiment, such as Figure 10 As shown, one of the first sidewall portion 2042 and the first safety device 202 has a first slot 2014, and the other has a first protrusion 2015 corresponding to the first slot 2014; and / or, one of the second sidewall portion 2043 and the second safety device 203 has a second slot 2016, and the other has a second protrusion 2017 corresponding to the second slot 2016. The engagement of the first slot 2014 and the first protrusion 2015, and the engagement of the second slot 2016 and the second protrusion 2017, makes the connection between the connector 204 and the first safety device 202 and the second safety device 203 more secure and detachable.

[0043] In one embodiment, such as Figure 8 As shown, the heating plate 2 includes a first snap-fit ​​portion 2011 and a second snap-fit ​​portion 2012. The first safety device 202 has a first step portion 2021, and the second safety device 203 has a second step portion 2031. The first snap-fit ​​portion 2011 and the first step portion 2021 are snap-fitted together, and the second snap-fit ​​portion 2012 and the second step portion 2031 are snap-fitted together.

[0044] The first locking part 2011 abuts against the first step part 2021, and the second locking part 2012 abuts against the second step part 2031, thereby fixing the first safety device 202 and the second safety device 203 to the disc body 201.

[0045] Further, the first snap-fit ​​portion 2011 includes a first main body portion 20111 and a first bent portion 20112. The first main body portion 20111 and the first bent portion 20112 are integral or fixed. The first bent portion 20112 is limited and engaged with the stepped surface of the first stepped portion 2021. In one embodiment, during the production process, the first snap-fit ​​portion 2011 can be fixed to the thermal bridge 205 by welding or other means. The first snap-fit ​​portion 2011 is first vertically fixed to the thermal bridge 205, then the first safety device 202 is placed adjacent to the first snap-fit ​​portion 2011, and then the first snap-fit ​​portion 2011 is bent to form the first bent portion 20112. The first bent portion 20112 is then abutted against the first stepped portion 2021, thereby fixing the first safety device 202. In another embodiment, the first bent portion 20112 can also be fixed to the first main body portion 20111 by welding or other means. After the first safety device 202 is placed adjacent to the first main body portion 20111, the first bent portion 20112 is fixed to the first main body portion 20111 by welding or other means and abuts against the first step portion 2021.

[0046] Of course, in other embodiments, the first safety device 202 and the second safety device 203 can also be fixed to the thermal bridge 205 by welding or other means.

[0047] In one embodiment, the first main body 20111 has a certain elasticity and can undergo elastic deformation under the action of external force, thereby causing the first bending part 20112 and the first step part 2021 to be misaligned, and thus the first safety device 202 can be disassembled. Compared with some related technologies where the first safety device 202 is directly welded to the thermal bridge 205, the first safety device 202 is detachably fixed to the thermal bridge 205, which facilitates its maintenance and replacement.

[0048] Similarly, the second snap-fit ​​part 2012 includes a second main body part 20121 and a second bending part 20122. Its structure and principle are the same as those of the first snap-fit ​​part 2011, and will not be described again.

[0049] The above are merely typical specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any technical solutions, concepts, and designs obtained by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and utility model concept of this utility model and by making equivalent substitutions or changes, should be covered within the protection scope of this utility model.

Claims

1. A heating pump, comprising a heating plate (2), a pump body (1), and a safety component, wherein the heating plate (2) is located at one end of the pump body (1), and the safety component is fixed to the heating plate (2), characterized in that, The safety components include a first safety device (202), a second safety device (203), and a connector (204). The first safety device (202) and the second safety device (203) are respectively fixed or integrally formed with the connector (204). The first safety device (202) and the second safety device (203) are respectively fixed and thermally connected to the heating plate (2). At least a portion of the first safety device (202) and the second safety device (203) is located between the connector (204) and the heating plate (2).

2. The heating pump according to claim 1, characterized in that, The heating plate (2) includes a plate body (201), a heating tube (206), and a heat bridge (205). The heat bridge (205) is fixed to the plate body (201). The first safety device (202) and the second safety device (203) are fixed to the heat bridge (205). The heating tube (206) is fixed to the plate body (201). The heat bridge (205) partially covers the heating tube (206). The heat bridge (205) has a protrusion (2051) and a bottom (2052). There is a gap between the protrusion (2051) and the heating tube (206). The bottom (2052) is in contact with the heating tube (206). The first safety device (202) is connected to the bottom (2052), and the second safety device (203) is connected to the protrusion (2051).

3. The heating pump according to claim 1 or 2, characterized in that, The safety component includes a plug (2013) which is integrally or fixed to the connector (204).

4. The heating pump according to claim 3, characterized in that, The connector (204) has a through first mounting hole (209) and a second mounting hole (2010), which are located within the area enclosed by the plug-in portion (2013). The safety component includes a first electrical contact portion (207) and a second electrical contact portion (208), a portion of the first electrical contact portion (207) being located within the first mounting hole (209), and a portion of the second electrical contact portion (208) being located within the second mounting hole (2010). One end of the first electrical contact portion (207) is electrically connected to the first safety device (202), and at least a portion of the other end of the first electrical contact portion (207) is located within the area enclosed by the plug-in portion (2013). One end of the second electrical contact portion (208) is connected to the second safety device (203), and at least a portion of the other end of the second electrical contact portion (208) is located within the area enclosed by the plug-in portion (2013).

5. The heating pump according to claim 1, 2, or 4, characterized in that, The connector (204) includes a bottom wall portion (2041), a first side wall portion (2042), and a second side wall portion (2043). The bottom wall portion (2041) connects the first side wall portion (2042) and the second side wall portion (2043). The first side wall portion (2042) includes a first wall (20421) and a second wall (20422) disposed opposite to each other. At least a portion of the first safety device (202) is located between the first wall (20421) and the second wall (2043). Between 20422), the second side wall portion (2043) includes a third wall (20431) and a fourth wall (20432) disposed opposite to each other, and at least a portion of the second safety device (203) is located between the third wall (20431) and the fourth wall (20432); or, the connector (204) includes a bottom wall portion (2041), which is fixed to the first safety device (202) and the second safety device (203) respectively.

6. The heating pump according to claim 5, characterized in that, The first wall (20421) has a first guide wall (2042c) and a first fixing body (2042a), the width of the first guide wall (2042c) being smaller than the width of the first fixing body (2042a), and the first guide wall (2042c) having a first inclined portion (20424) facing the first safety device (202); and / or, the second wall (20422) has a second guide wall (2042d) and a second fixing body (2042b), the width of the second guide wall (2042d) being smaller than the width of the second fixing body (2042b), and the second guide wall (2042d) having a second inclined portion (20425) facing the first safety device (202); and / or Alternatively, the third wall (20431) has a third guide wall (2043c) and a third fixing body (2043a), the width of the third guide wall (2043c) being smaller than the width of the third fixing body (2043a), and the third guide wall (2043c) having a third inclined portion (20434) facing the second safety device (203); and / or, the fourth wall (20432) has a fourth guide wall (2043d) and a fourth fixing body (2043b), the width of the fourth guide wall (2043d) being smaller than the width of the fourth fixing body (2043b), and the fourth guide wall (2043d) having a fourth inclined portion (20435) facing the second safety device (203).

7. The heating pump according to claim 6, characterized in that, At least one of the first fixing body (2042a) and the second fixing body (2042b) has a first limiting groove (20423), and at least a portion of the first safety device (202) cooperates with the first limiting groove (20423); and / or, at least one of the third fixing body (2043a) and the fourth fixing body (2043b) has a second limiting groove (20433), and at least a portion of the second safety device (203) cooperates with the second limiting groove (20433).

8. The heating pump according to claim 5, characterized in that, One of the first sidewall portion (2042) and the first safety device (202) has a first slot (2014), and the other has a first protrusion (2015) corresponding to the first slot (2014); and / or, one of the second sidewall portion (2043) and the second safety device (203) has a second slot (2016), and the other has a second protrusion (2017) corresponding to the second slot (2016).

9. The heating pump according to claim 1, 2, 4, 6, 7, or 8, characterized in that, The heating plate (2) includes a first snap-fit ​​portion (2011) and a second snap-fit ​​portion (2012), which are respectively fixed or integrally formed with the thermal bridge (205) of the heating plate (2). The first safety device (202) has a first stepped portion (2021), and the second safety device (203) has a second stepped portion (2031). The first snap-fit ​​portion (2011) engages with the first stepped portion (2021), and the second snap-fit ​​portion (2012) engages with the second stepped portion (2031). The first main body (20111) and the first bent part (20112) are integral or fixed together, and the first bent part (20112) is in a limiting fit with the step surface of the first step part (2021); the second snap-fit ​​part (2012) includes a second main body (20121) and a second bent part (20122), and the second main body (20121) and the second bent part (20122) are integral or fixed together, and the second bent part (20122) is in a limiting fit with the step surface of the second step part (2031).

10. The heating pump according to claim 1, 2, 4, 6, 7, or 8, characterized in that, The heating pump is installed in the main body of the dishwasher or washing machine, the first safety device (202) includes a circuit breaker, and the second safety device (203) includes a thermostat.

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