A washing pump

Abstract

A kind of washing pump, including pump shell, pump cover that covers on pump shell and heating component arranged on pump cover, water passage cavity is formed between pump shell and pump cover, it further include heat conduction sheet and temperature controller, temperature controller is fixed on heat conduction sheet, heat conduction sheet includes heat conduction part and heat conduction connecting portion extended and arranged in the inside of heat conduction part, temperature controller is contacted with heat conduction part, heat conduction connecting portion is contacted with pump cover, heat conduction part is hollowly arranged above heating component.The washing pump of the utility model by setting heat conduction sheet, heat conduction sheet includes heat conduction part and heat conduction connecting portion extended and arranged in the inside of heat conduction part, temperature controller is contacted with heat conduction part, heat conduction connecting portion is contacted with pump cover, heat conduction part is hollowly arranged above heating component, the heat of heating component can be transferred to heat conduction connecting portion, then heat is transferred to water in water passage cavity by pump cover, to make water temperature in water passage cavity close to the temperature of heat conduction part, to greatly improve the accuracy of water temperature detection.

Description

Technical Field

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

[0002] Chinese Patent Document No. CN223152297U, published on July 25, 2025, discloses a heating pump and a dishwasher, relating to the field of dishwasher technology. The heating pump includes a pump housing, a motor, an impeller, and a heater. The pump housing has an inlet and an outlet. The impeller is disposed inside the pump housing. The motor is drivenly connected to the impeller. The heater is attached to the outer wall of the pump housing. The pump housing includes a shell and a heat-conducting vortex, the heat-conducting vortex being connected to the inner wall of the shell. The heat-conducting vortex is used for heat exchange with water entering the shell from the inlet. The heater of this heating pump includes a heat transfer plate and a heating tube. The heating tube is embedded in the heat transfer plate. A thermostat is disposed at the end of the heater away from the pump housing. The heat from the heating tube is transferred to the thermostat through the heat transfer plate, and the thermostat detects the temperature of the heating tube, thereby detecting the water temperature inside the shell. However, the temperature of the heating tube is significantly higher than the water temperature inside the shell, resulting in inaccurate temperature measurement.

[0003] Therefore, further improvements are necessary. Utility Model Content

[0004] The purpose of this invention is to provide a washing pump that is simple in structure, accurate in temperature measurement, stable and reliable, has good heat dissipation effect, and is highly practical, so as to overcome the shortcomings of the prior art.

[0005] A washing pump designed for this purpose includes a pump housing, a pump cover fitted onto the pump housing, and a heating element disposed on the pump cover, with a water passage cavity formed between the pump housing and the pump cover. The pump is characterized by further including a heat-conducting plate and a thermostat. The thermostat is fixed on the heat-conducting plate, which includes a heat-conducting portion and a heat-conducting connecting portion extending inside the heat-conducting portion. The thermostat contacts the heat-conducting portion, and the heat-conducting connecting portion abuts against the pump cover. The heat-conducting portion is perforated and disposed above the heating element.

[0006] The pump cover is provided with a mounting groove, the heating component is installed in the mounting groove, and an abutment part is provided on the inner side of the top of the mounting groove, and the heat-conducting connection part abuts with the abutment part.

[0007] The distance between the heat-conducting part and the heating element is a, where a = 2 to 5 mm.

[0008] The heat-conducting sheet also includes a pressing part, which is located on both sides of the heat-conducting part. The pressing part is pressed against the heating element, and the pressing part presses downward against the heating element.

[0009] Both ends of the heat-conducting part are connected to the crimping part; or, both ends of the heat-conducting connection part are connected to the crimping part.

[0010] The heat-conducting connection extends downward at an angle to the inside of the heat-conducting part, and the abutment extends downward at an angle to the inside of the top of the mounting groove. The heat-conducting connection and the abutment are welded together.

[0011] The heat-conducting part protrudes upwards and is mounted on the heat-conducting plate, while the temperature controller presses downwards against the heat-conducting part.

[0012] Fasteners are provided on the heat-conducting plate, and a mounting plate is provided on the thermostat. The mounting plate has mounting holes, and a locking element is provided after the fasteners pass through the mounting holes to fix the thermostat on the heat-conducting plate.

[0013] It also includes a fuse and a mounting plate. The mounting plate is pressed against the heating element. One end of the fuse is fixed on the mounting plate and the other end is fixed on the heat-conducting plate. The fuse is in contact with the heating element.

[0014] It also includes an inlet pipe and an outlet pipe. The inlet pipe is installed on the pump cover, and the outlet pipe is installed on the pump casing. The inlet pipe, the water passage chamber, and the outlet pipe are connected in sequence. An impeller is installed inside the water passage chamber.

[0015] The washing pump of this utility model is equipped with a heat-conducting plate, which includes a heat-conducting part and a heat-conducting connecting part extending inside the heat-conducting part. The thermostat is in contact with the heat-conducting part, and the heat-conducting connecting part abuts against the pump cover. The heat-conducting part is hollowed out above the heating element, and the heat of the heating element can be transferred to the heat-conducting connecting part. Then, the heat is transferred to the water in the water passage cavity through the pump cover, so that the water temperature in the water passage cavity is close to the temperature of the heat-conducting part, thereby greatly improving the accuracy of water temperature detection. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the washing pump in one embodiment of the present invention.

[0017] Figure 2 for Figure 1 A magnified structural diagram of point A in the middle.

[0018] Figure 3 This is a schematic diagram of the overall structure of the washing pump in one embodiment of the present invention.

[0019] Figure 4 This is a partial structural diagram of the washing pump in one embodiment of the present invention.

[0020] Figure 5 This is an exploded view of a portion of the structure of the washing pump in one embodiment of the present invention.

[0021] Figure 6 This is a schematic diagram of the overall structure of the heat-conducting sheet in one embodiment of the present invention. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] See Figures 1-6 This washing pump includes a pump housing 1, a pump cover 2 that covers the pump housing 1, and a heating element 3 disposed on the pump cover 2. A water passage cavity 4 is formed between the inner side of the pump housing 1 and the pump cover 2. It also includes a heat-conducting plate 5 and a thermostat 6. The thermostat 6 is fixed on the heat-conducting plate 5. The heat-conducting plate 5 includes a heat-conducting part 7 and a heat-conducting connecting part 8 that extends and is disposed inside the heat-conducting part 7. The thermostat 6 is in contact with the heat-conducting part 7, and the heat-conducting connecting part 8 abuts against the outer side of the pump cover 2. The heat-conducting part 7 is hollowed out above the heating element 3, so that the thermostat 6 does not detect the temperature of the heating element 3.

[0024] The pump cover 2 is provided with an annular mounting groove 9. The heating component 3 is annular and is installed in the mounting groove 9. The heating component 3 is welded and fixed in the mounting groove 9. The heating component 3 is a heating tube. An abutment part 10 is provided on the inner side of the top of the mounting groove 9. The heat-conducting connection part 8 abuts against the abutment part 10. The abutment part 10 is located on the pump cover 2 near the middle.

[0025] The distance between the heat-conducting part 7 and the heating element 3 is a, where a = 2 to 5 mm, preferably 3 mm.

[0026] The heat-conducting sheet 5 also includes a pressing part 11, which is located on both sides of the heat-conducting part 7. The pressing part 11 is pressed against the heating component 3, and the pressing part 11 presses down against the heating component 3. In this embodiment, the pressing part 11 is welded to the heating component 3, and the pressing part 11 is in contact with the plane of the heating component 3.

[0027] like Figure 6 As shown, the two ends of the heat-conducting part 7 are integrally connected to the pressing part 11; the heat of the heating component 3 is transferred to the heat-conducting part 7 through the pressing part 11, and then the heat is transferred to the heat-conducting connection part 8, thereby dissipating heat from the heat-conducting part 7 to reduce the temperature of the heat-conducting part 7. Then the heat is transferred to the water in the water passage chamber 4 through the pump cover 2 (abutting part 10) so that the water temperature in the water passage chamber 4 is close to the temperature of the heat-conducting part 7.

[0028] Alternatively, the two ends of the heat-conducting connection part 8 are respectively connected to the crimping part 11. The heat of the heating component 3 is transferred to the heat-conducting connection part 8 through the crimping part 11. Then, part of the heat is transferred to the heat-conducting part 7 and the other part is transferred to the water in the water passage chamber 4 through the pump cover 2 (abutment part 10) so that the water temperature in the water passage chamber 4 is close to the temperature of the heat-conducting part 7.

[0029] The heat-conducting connection part 8 extends downward at an angle to the inside of the heat-conducting part 7, and the abutment part 10 extends downward at an angle to the inside of the top of the mounting groove 9. The heat-conducting connection part 8 and the abutment part 10 are welded together. The heat-conducting sheet 5 is an aluminum sheet.

[0030] The heat-conducting part 7 protrudes upward and is disposed on the heat-conducting plate 5. The temperature controller 6 presses downward against the heat-conducting part 7, and the temperature controller 6 is in contact with the plane of the heat-conducting part 7.

[0031] Fasteners 12 are provided on the heat-conducting plate 5, and mounting plate 13 is provided on the thermostat 6. Mounting hole 14 is provided on mounting plate 13. After fasteners 12 pass through mounting hole 14, locking member 15 is provided to fix thermostat 6 on heat-conducting plate 5. Fasteners 12 are screws, which are welded to heat-conducting plate 5. Locking member 15 is a nut, which is threaded to screw, thereby locking mounting plate 13 on screw, thus fixing thermostat 6 on heat-conducting plate 5.

[0032] It also includes a fuse 16 and a mounting plate 17. The mounting plate 17 is pressed against the heating element 3. One end of the fuse 16 is fixed to the mounting plate 17 and the other end is fixed to the heat-conducting plate 5. The fuse 16 is in contact with the heating element 3. In this embodiment, the mounting plate 17 is welded to the heating element 3. The fixing method of the fuse 16 is the same as the fixing method of the thermostat 6.

[0033] The thermostat 6 detects the temperature of the heat-conducting part 7, and thus indirectly detects the water temperature in the water passage 4. When the detected temperature is higher than the set temperature, the thermostat 6 disconnects the circuit of the heating element 3. When the detected temperature is lower than the set temperature, the thermostat 6 connects the circuit of the heating element 3, thereby regulating and controlling the water temperature of the washing pump. The temperature detection of the thermostat 6 is used when there is water in the water passage 4. When the heating element 3 is heating, if there is no water in the water passage 4, the temperature of the heating element 3 continues to rise. The heat of the heating element 3 is directly transferred to the fuse 16. When the temperature of the heating element 3 is too high, the fuse 7 is disconnected to cut off the circuit of the washing pump and prevent dry burning.

[0034] It also includes an inlet pipe 18 and an outlet pipe 19. The inlet pipe 18 is installed on the pump cover 2, and the outlet pipe 19 is installed on the pump casing 1. The inlet pipe 18, the water passage chamber 3, and the outlet pipe 19 are connected in sequence. An impeller 20 is installed in the water passage chamber 3. A motor (not shown in the figure) is installed in the pump casing 1. The motor drives the impeller 20 to rotate. When the impeller 20 rotates, external water enters the water passage chamber 4 through the inlet pipe 18. The heating element 3 heats the water in the water passage chamber 4, and then the hot water flows out of the washing pump through the outlet pipe 19.

[0035] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made without departing from the spirit and scope of this utility model, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A washing pump, comprising a pump housing (1), a pump cover (2) fitted onto the pump housing (1), and a heating element (3) disposed on the pump cover (2), wherein a water passage cavity (4) is formed between the pump housing (1) and the pump cover (2), characterized in that: It also includes a heat-conducting plate (5) and a thermostat (6). The thermostat (6) is fixed on the heat-conducting plate (5). The heat-conducting plate (5) includes a heat-conducting part (7) and a heat-conducting connecting part (8) extending inside the heat-conducting part (7). The thermostat (6) contacts the heat-conducting part (7), and the heat-conducting connecting part (8) abuts against the pump cover (2). The heat-conducting part (7) is hollowed out and disposed above the heating component (3).

2. The washing pump according to claim 1, characterized in that: The pump cover (2) is provided with a mounting groove (9), the heating component (3) is installed in the mounting groove (9), and the mounting groove (9) has an abutment part (10) extending from the inner side of the top, and the heat-conducting connection part (8) abuts against the abutment part (10).

3. The washing pump according to claim 1, characterized in that: The distance between the heat-conducting part (7) and the heating part (3) is a, where a = 2 to 5 mm.

4. The washing pump according to claim 1, characterized in that: The heat-conducting sheet (5) also includes a pressing part (11), which is located on both sides of the heat-conducting part (7). The pressing part (11) is pressed against the heating component (3), and the pressing part (11) presses down against the heating component (3).

5. The washing pump according to claim 4, characterized in that: The two ends of the heat-conducting part (7) are respectively connected to the crimping part (11); or, the two ends of the heat-conducting connection part (8) are respectively connected to the crimping part (11).

6. The washing pump according to claim 2, characterized in that: The heat-conducting connection (8) extends downward at an angle inside the heat-conducting part (7), and the abutment part (10) extends downward at an angle inside the top of the mounting groove (9). The heat-conducting connection part (8) and the abutment part (10) are welded together.

7. The washing pump according to claim 1, characterized in that: The heat-conducting part (7) protrudes upward and is disposed on the heat-conducting plate (5), and the temperature controller (6) presses downward against the heat-conducting part (7).

8. The washing pump according to claim 1, characterized in that: Fasteners (12) are provided on the heat-conducting plate (5), and mounting plate (13) is provided on the thermostat (6). Mounting hole (14) is provided on the mounting plate (13). After the fasteners (12) pass through the mounting hole (14), locking member (15) is provided so that the thermostat (6) is fixed on the heat-conducting plate (5).

9. The washing pump according to claim 1, characterized in that: It also includes a fuse (16) and a mounting plate (17). The mounting plate (17) is pressed against the heating element (3). One end of the fuse (16) is fixed on the mounting plate (17) and the other end is fixed on the heat-conducting plate (5). The fuse (16) is in contact with the heating element (3).

10. The washing pump according to claim 1, characterized in that: It also includes an inlet pipe (18) and an outlet pipe (19). The inlet pipe (18) is installed on the pump cover (2), and the outlet pipe (19) is installed on the pump casing (1). The inlet pipe (18), the water passage chamber (4) and the outlet pipe (19) are connected in sequence. An impeller (20) is installed in the water passage chamber (4).

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