WO2019237689A1 - Pump assembly and dishwasher - Google Patents

Abstract

A pump assembly and a dishwasher, the pump assembly comprising a pump casing (1) and a heater (4) located at the interior of the pump casing (1), the pump casing (1) comprising a pump cap (12), and the heater (4) comprising a heating tube body (41) and connection terminals (42) at two ends of the heating tube body (41); the pump assembly further comprises a cover component of a cover on the heating tube body (41), and outer sides of the cover component in the radial direction are buckled and connected together with the pump cap (12) so as to cover the heating tube body (41) from two sides of the heating tube body and outer sides of the heating tube body (41) in the radial direction, wherein at least one portion of the cover component is a connector (5), and the connector (5) comprises a casing part (51) that forms at least one portion of the cover component, and an insertion assembly that is disposed on the casing part (51) and that is used for connecting the heater (4) to a power supply. Hence, the heating tube body (41) may be prevented from being damaged, and safety problems may be prevented from occurring.

Description

Pump assembly and dishwasher

Cross-reference to related applications

This application requires Chinese patent application number "201810621275.5" and "Foshan Weiwei", which were filed by Guangdong Welling Motor Manufacturing Co., Ltd. on June 15, 2018, with the invention name "Pump Unit of Dishwasher and Dishwasher With It" Priority of Chinese Patent Application No. “20181114895.5” with the invention name of “Pump Assembly and Dishwasher” submitted by Ling Washing Motor Manufacturing Co., Ltd. on September 28, 2018.

Technical field

The present disclosure relates to the technical field of dishwasher manufacturing, and in particular, to a pump assembly and dishwasher for a dishwasher.

Background technique

In the prior art, a dishwasher is provided with a water pump to drive water flow through the water pump to wash dishes, and a heater (generally using a heating pipe) is provided on the pump casing to heat the fluid in the pump, so that the water pump can pump the heated fluid.

At present, because the pump casing is provided with a connector for supplying power to the heating tube, a cover covering the heating tube cannot usually be provided at the position where the connector is installed, which causes at least part of the heating part of the heating tube to be exposed to the outside. Pipes are damaged, and safety issues and problems with cleaning cannot occur in the event of bursting of the heating pipe.

When the dishwasher is working, the water in the dishwasher needs to be heated to achieve a better cleaning effect. In the related art, the setting of the temperature detection device in the dishwasher is greatly affected by the heating device in the dishwasher, so that the temperature detection device has a certain error in the temperature detection, which affects the operation of the protection device in the dishwasher, resulting in The safety of the dishwasher cannot be effectively guaranteed.

Summary of the Invention

The present disclosure aims to solve at least one of the technical problems in the related art.

For this reason, an object of the present disclosure is to propose a pump assembly which is highly safe.

Another object of the present disclosure is to propose a dishwasher.

A pump assembly according to an embodiment of the present disclosure includes a pump housing including a pump cover; a heater located in the pump housing, the heater heating a fluid in the pump housing, The heater includes a heating tube main body capable of generating heat provided on the pump cover, and connection terminals at both ends of the heating tube main body; a cover member covering the heating tube main body, The cover member is snap-connected with the outside of the pump cover in the radial direction to cover from both sides of the heating tube body and the outside of the heating tube body in the radial direction. In the heating pipe main body, at least a part of the cover member is a connector, and the connector includes a housing portion and a plug provided on the housing portion for connecting the heater to a power source. Components.

Optionally, the heating pipe main body is provided around the pump inlet of the pump cover, the casing portion extends in a circumferential direction to cover a part of the heating pipe main body, and the cover member further includes a cover plate, so that The cover plate includes a cover plate body extending from one end of the housing portion in a circumferential direction to cover the heating pipe body with the housing portion.

Optionally, an end surface of the housing portion at an end abutting with the cover plate body in the circumferential direction is flush with an end surface of the cover plate body or the housing portion exceeds an end surface of the cover plate body. 5mm.

Optionally, the housing portion includes a main cover portion on a side of the heating pipe body facing away from the pump cover, and a side cover bent from the outer edge of the main cover portion and extending to the pump cover. unit.

Optionally, the heater includes a heating tube main body, a heat conducting plate, and a first temperature protection device, the heating tube main body is disposed on an outer end surface of the pump cover, and the heating tube main body includes a connection terminal and a heating portion, The connection terminal is provided at an end portion of the heating portion, and the heat transfer plate is provided between the heating tube main body and the pump cover, and the heat transfer plate includes a protrusion portion, and the protrusion portion extends along the The axial direction of the main body of the pump casing protrudes outward and protrudes outward in the radial direction. The convex portion corresponds to the connection terminal and is disposed at a distance from the connection terminal. The first temperature protection device is provided at The raised portion.

Optionally, there are two connection terminals, and one convex portion corresponds to any one of the two connection terminals.

Optionally, the raised portion includes a first plate and a second plate, the first plate is located radially inward of the heating pipe main body, the second plate is connected to the first plate, and the The second plate extends radially outward from its connection with the first plate.

Optionally, the raised portion further includes: a third plate connected to the second plate, the third plate being located radially outside the main body of the heating pipe, and the third plate It is also supported on the outer end surface of the pump cover.

Optionally, two sides of the first plate are respectively provided with heat insulation grooves.

Optionally, the pump assembly further includes: a second temperature protection device, the second temperature protection device is attached to the heating part of the heating pipe body.

Optionally, the first temperature protection device is a resettable temperature protection device, and the second temperature protection device is a non-resettable temperature protection device.

Optionally, a cross section of the heating portion of the heating pipe body is trapezoidal.

Optionally, the inner ring edge of the heat transfer plate and the inner ring edge of the pump cover are welded and fixed.

A dishwasher according to the present disclosure includes a pump assembly for a dishwasher as described above.

Additional aspects and advantages of the present disclosure will be given in part in the following description, and part of them will become apparent from the following description, or be learned through the practice of the present disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

1 is a schematic sectional view of a pump assembly according to an embodiment of the present disclosure;

2 is a schematic perspective view of a three-dimensional structure of a heater cover on a pump cover according to an embodiment of the present disclosure;

3 is a schematic structural view of the components shown in FIG. 2 in a separated state;

4 is a schematic perspective view of a heater provided on a pump cover according to an embodiment of the present disclosure;

5 is a schematic perspective view of a cover plate according to an embodiment of the present disclosure;

6 is a schematic cross-sectional view of a pump assembly according to an embodiment of the present disclosure;

7 is a schematic structural diagram of a pump assembly according to an embodiment of the present disclosure;

8 is a schematic structural diagram of a heater according to an embodiment of the present disclosure;

9 is a schematic structural diagram of a heating pipe body according to an embodiment of the present disclosure;

10 is a schematic structural diagram of a heating pipe main body according to an embodiment of the present disclosure, in which the heating pipe main body is connected to a heat conducting plate;

11 is a schematic structural diagram of a heater according to an embodiment of the present disclosure, in which a first temperature protection device and a second temperature protection device are shown;

FIG. 12 is a cross-sectional view of a pump assembly according to an embodiment of the present disclosure.

detailed description

Hereinafter, embodiments of the present disclosure will be described in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present disclosure, and should not be construed as limiting the present disclosure.

First, to be noted that, in the present application is made on the basis of the above priority documents, therefore, the term of the above priority documents were unified.

"Pump cover 11" in priority document "201810621275.5" and "201811141895.5" in priority document "Pump cover 12" is the same component, unified as "Pump cover 12"; the "Canada cover" in the priority document "201810621275.5" The "heat pipe assembly 2" is the same component as the "heater 4" in the priority document "201811141895.5" and is unified as "plus Heater 4 ";" Cold End 211 "in priority document" 201810621275.5 "and priority document" 201811141895.5 " The "connection terminal 42" in the figure is the same component and is collectively referred to as the "connection terminal 42". And the priority document "201810621275.5" Corresponding modification of the middle part number, replace "Heating section 212" with "Heating section 412"; Replace "Protrusion section 221" with "Convex section 421 ";" Thermal plate 22 "is replaced by" Thermal plate 42 "," Thermo-sensing portion 222 "is replaced by" Thermo-sensing portion 422 ", Replace "first plate 2211" with "first plate 4211", "second plate 2212" with "second plate 4212", "third "Plate 2213" was replaced with "Third plate 4213", "Insulation tank 2214" was replaced with "Insulation tank 4214", "First temperature protection Device 23 "was replaced with" First Temperature Protection Device 43 "and" Second Temperature Protection Device 24 "was replaced with" Second Temperature Protection Device " Device 44 ".

The technical solutions provided by the present disclosure will be further described below according to specific embodiments and the accompanying drawings.

As shown in FIG. 2 to FIG. 4, the pump assembly includes a pump casing 1, and the pump casing 1 includes a pump cover 12; the heater 4 is located in the pump casing 1, and the heater 4 heats the fluid in the pump casing 1. The heater 4 includes a heating tube main body 41 capable of generating heat provided on the pump cover 12 and connection terminals 42 at both ends of the heating tube main body 41; a cover member, which covers the heating tube body 41, and the cover member and the The pump cover 12 is snap-fitted together on the outside in the radial direction to cover the heating tube body 41 from both sides of the heating tube body 41 and the outside of the heating tube body 41 in the radial direction. At least a part is the connector 5, and the connector 5 includes a housing portion and a plug assembly provided on the housing portion for connecting the heater 4 to a power source.

Optionally, the heating pipe main body 41 of the heater 4 is provided around the pump inlet 121 of the pump cover 12, and the housing portion 51 of the connector 5 extends in a circumferential direction to cover a part of the heating pipe main body 41. The cover member further includes a cover plate 8 including a cover body 81 extending from one end of the housing portion 51 in a circumferential direction to cover the heating pipe body 41 together with the housing portion 51.

Optionally, an end surface of the housing portion 51 that is in abutment with the cover plate body 81 in the circumferential direction is flush with an end surface of the cover plate body 81 or the housing portion 51 extends beyond the cover plate body The end surface of 81 is 0-5 mm, and the height of the housing portion 51 is higher than that of the cover body 81. The housing portion 51 is in abutment with the end surface of the cover plate main body 81 so as to completely cover the heating pipe main body 41 and avoid being exposed at the abutment.

Wherein, the housing portion 51 of the connector 5 includes a main cover portion 511 on a side of the heating pipe main body 41 facing away from the pump cover 12, and is bent to extend from the outer edge of the main cover portion 511 to the The side cover portion 512 of the pump cover 12. The side cover portion 512 is bent and arranged in the axial direction to form a stepped structure, which is not only convenient for buckling on the pump cover 12, but also can enhance the rigidity of the side cover portion 512. In addition, the connector 5 further includes a plug-in component for connecting the connector 5 to the housing portion 51. The plug-in component includes a plug-in portion 52 fixed outside the housing portion 51, and is electrically connected to the plug-in portion 52. A lead wire 53 extending inside the housing portion 51 is connected, and the lead wire 53 may be connected to a connection terminal 42 of the heater 4 to supply power to the heater 4. A device such as a protector may be further provided inside the housing portion 51.

Similar to the structure of the housing portion 51, the cover plate main body 81 of the cover plate 8 also includes a plate body provided on a side of the heating pipe body 41 facing away from the pump cover 12, and bent from an outer edge of the plate body The side plate extends to the pump cover 12, and the side plate is bent to form a stepped structure.

The specific structure of the cover plate 8 is shown in FIG. 8, which includes a cover plate body 81 and a ring structure 82 connected to the cover plate body 81 and arranged around the pump inlet 121. The ring structure 82 is also provided with a structure for The housing portion 51 of the connector 5 is fixed to a fixing portion 83 of the pump cover 12. A connection portion 84 is further provided on the outer edge of the cover plate main body 81, and the connection portion 84 can be fixed to the pump cover 12.

The cover plate 8 is provided with a ring structure 82, so that not only the fixing portion 83 can be conveniently provided to fix the connector 5 on the pump cover 12 through the fixing portion 83, but also the connection portion 84 and the fixing portion provided on the ring structure 82 in a circumferential interval. The fixing of 83 enables the cover plate 8 to be firmly fixed on the pump cover 12.

Optionally, a protrusion 54 is provided on an outer side of the housing portion 51 facing away from the heating pipe main body 41, and the fixing portion 83 is placed on the outer surface of the housing portion 51 and can be fixed on the outer surface of the housing portion 51. The bent body on the pump cover 12 is provided with a positioning hole 831 that cooperates with the boss 54. The bent body can be set to be able to be snapped on the pump cover 12, and can also be fixed to the pump cover 12 by welding or riveting.

The connecting portion 84 is also provided as a bent structure, and the bent structure can be snapped on the pump cover 12 or fixed on the pump cover 12 by riveting or welding.

Of course, those skilled in the art can understand that the housing portion 51 and the cover plate 8 of the connector 5 are not limited to the structural forms provided in this embodiment, and other structures that can prevent the heating tube main body 41 from being exposed to the outside are all can.

In some embodiments of the present disclosure, the heater 41 includes a heating tube main body 41, a heat conducting plate 42, and a first temperature protection device 43. The heating tube main body 41 is disposed on an outer end surface of the pump cover 12, wherein the pump cover 12 also has an inner The end surface, the inner end surface is a water surface, and the outer end surface is a heating surface.

The heating tube main body 41 includes a connection terminal 42 and a heating portion 412. The connection terminal 42 is provided at an end of the heating portion 412. A heat conducting plate 42 is provided between the heating pipe main body 41 and the pump cover 12. The heat conducting plate 42 includes a protruding portion 421. The convex portion 421 protrudes outward along the axial direction of the pump casing body 11 and protrudes outward in the radial direction. The convex portion 421 corresponds to the connection terminal 42 and is spaced from the connection terminal 42. The first temperature protection device 43 Provided in the raised portion 421.

It can be understood that when the dishwasher is operating, the heating pipe main body 41 heats the water in the dishwasher to achieve a better cleaning effect. The water can contact the water-facing surface of the pump cover 12 and absorb the water on the pump cover 12. Heat to raise water temperature.

Specifically, the heat transfer plate 42 can be used for heat transfer. The heat transfer plate 42 can transfer a part of the heat of the heating pipe body 41 to the pump cover 12. The temperature of the pump cover 12 is the same as the temperature of the water in the pump housing body 11. Since the heat transfer plate 42 is provided on the surface of the pump cover 12, the temperature of the heat transfer plate 42 may also be the same as the temperature of the water in the pump housing body 11.

The first temperature protection device 43 can be used to detect the water temperature in the dishwasher. When the first temperature protection device 43 detects that the water temperature in the dishwasher is too high, the heating tube main body 41 is controlled to stop heating the water, so that Prevent the water temperature in the dishwasher from becoming too high. Setting the first temperature protection device 43 on the convex portion 421 can space the first temperature protection device 43 from the heating tube body 41, that is, the first temperature protection device 43 does not directly contact the heating tube body 41. Such a setting can be avoided The temperature of the heating pipe body 41 is directly transmitted to the raised portion 421 and the first temperature protection device 43, which can further make the first temperature protection device 43 detect the water temperature more accurately to effectively prevent the water temperature in the dishwasher from becoming too high. , Which can play a good role in protecting users.

According to the pump assembly of the dishwasher according to the embodiment of the present disclosure, the first temperature protection device 43 is disposed on the convex portion 421, so that the first temperature protection device 43 and the heating pipe main body 41 are kept in a non-contact state, so that The first temperature protection device 43 increases the accuracy of the water temperature detection of the dishwasher, so as to better prevent the water temperature in the dishwasher from being too high, and improve the safety of the user.

In some embodiments of the present disclosure, there are two connection terminals 42 and one protrusion 421, and the protrusions 421 correspond to any one of the two connection terminals 42. Wherein, the position where the protruding portion 421 cooperates with the connection terminal 42 can be adjusted according to design requirements to better space the first temperature protection device 43 provided on the protruding portion 421 from the heating tube main body 41 and protect the first temperature. The arrangement of the device 43 on the connection terminal 42 can effectively reduce the influence of thermal radiation on the first temperature protection device 43.

In some embodiments of the present disclosure, the raised portion 421 includes a first plate 4211 and a second plate 4212. The first plate 4211 is located radially inward of the heating pipe body 41. The second plate 4212 is connected to the first plate 4211. The two plates 4212 extend radially outward from a connection point with the first plate 4211. Such a structure allows a certain gap between the second plate 4212 and the heating pipe main body 41 to better meet the requirements of the first temperature protection device 43 for the working environment, thereby improving the temperature detection of the first temperature protection device 43. Accuracy, which can better place the water temperature too high.

In a further embodiment of the present disclosure, the raised portion 421 further includes a third plate 4213, which is connected to the second plate 4212. The third plate 4213 is located radially outside the heating tube body 41, and the third plate 4213 is also Supported on the outer end surface of the pump cover 12. It can be understood that the second plate 4212 of the raised portion 421 cooperates with the first temperature protection device 43. Since the second plate 4212 is a structure extended from the first plate 4211, when the second plate 4212 and the first temperature protection device When the 43 is fitted, the second plate 4212 receives a force approaching the heating pipe main body 41 side. One end of the third plate 4213 extends from the second plate 4212 to the radially outer side of the heating pipe main body 41, and the other end of the third plate 4213 stops against the end face of the pump cover 12. This arrangement makes the third plate 4213 oppose the second The plate 4212 has a good supporting effect to improve the structural strength of the raised portion 421, thereby preventing the second plate 4212 from being deformed.

In some embodiments of the present disclosure, two sides of the first plate 4211 are respectively provided with heat insulation grooves 4214. The provision of the heat insulation groove 4214 can effectively prevent the heat transfer plate 42 from transferring heat to the first temperature protection device 43, and thus can effectively ensure the accuracy of the temperature detection of the first temperature protection device 43.

Further, the heat conducting plate 42 further includes a temperature sensing portion 422. The temperature sensing portion 422 can cooperate with the heating portion 412 and transfer the heat of the heating portion 412. A heat insulation groove 4214 is provided between the temperature sensing portion 422 and the first plate 4211. Such a setting can effectively prevent the heat transferred from the temperature sensing portion 422 to the convex portion 421 from being too high and affecting the detection of the first temperature protection device 43.

In some embodiments of the present disclosure, the pump assembly further includes a second temperature protection device 44, and the second temperature protection device 44 is attached to the heating portion 412 of the heating pipe body 41. Such a setting enables the second temperature protection device 44 to detect the real-time temperature of the heating pipe body 41 more accurately, so that the second temperature protection device 44 can protect the dishwasher.

In a further embodiment of the present disclosure, the first temperature protection device 43 is a resettable temperature protection device, and the second temperature protection device 44 is a non-resettable temperature protection device. It can be understood that when the first temperature protection device 43 performs temperature protection, the temperature of the heating tube body 41 no longer rises, the temperature of the heating tube body 41 can gradually decrease, and when the first temperature protection device 43 detects again When the water temperature is too high, the first temperature protection device 43 can also perform temperature protection; when the second temperature protection device 44 performs temperature protection, the heating circuit can be cut off to prevent danger from occurring.

It should be noted that the first temperature protection device 43 is used to detect the water temperature in the dishwasher, which can effectively prevent the water temperature from being too high to improve the use safety of the dishwasher. When the dishwasher is powered on in a waterless state, the second temperature protection device 44 can detect the temperature of the heating pipe body 41 and cut off the heating circuit when the heating pipe body 41 reaches a certain temperature to prevent danger from occurring.

In some embodiments of the present disclosure, the cross section of the heating portion 412 of the heating pipe body 41 is trapezoidal. Such a structure is simple and the heating effect of the heating pipe main body 41 is good, and at the same time, it is convenient for the heating pipe main body 41 to be connected with the pump cover 12 and the heat conducting plate 42.

In some embodiments of the present disclosure, the inner ring edge of the heat conducting plate 42 and the inner ring edge of the pump cover 12 are welded and fixed. Such a connection manner is firm, and the heat transfer effect between the heat conducting plate 42 and the pump cover 12 is better.

According to another aspect of the present disclosure, there is also provided a dishwasher provided with the pump assembly as described above.

The preferred embodiments of the present disclosure have been described in detail with reference to the accompanying drawings, but the present disclosure is not limited thereto. Within the scope of the technical idea of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, including the combination of each specific technical feature in any suitable manner. In order to avoid unnecessary repetition, various possible combinations are not described in this disclosure. However, these simple variations and combinations should also be regarded as the content disclosed in this disclosure, and all belong to the protection scope of this disclosure.

Although the embodiments of the present disclosure have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limitations on the present disclosure. Those skilled in the art can understand the above within the scope of the present disclosure. Embodiments are subject to change, modification, substitution, and modification.

Claims (14)

A pump assembly, comprising A pump casing including a pump cover; A heater located in the pump casing, the heater heating a fluid in the pump casing, the heater including a heating tube main body capable of generating heat provided on the pump cover, and Connection terminals at both ends of the heating pipe body; A cover member which covers the heating pipe body, and the cover member is snap-connected with an outer side of the pump cover in a radial direction to remove the heat from the heating pipe body; Both sides and the outside of the heating pipe body in the radial direction cover the heating pipe body, wherein: At least a part of the cover member is a connector, and the connector includes a housing portion and a plug-in assembly provided on the housing portion for connecting the heater to a power source. The pump assembly according to claim 1, wherein the heating pipe main body is disposed around the pump inlet of the pump cover, and the casing portion extends in a circumferential direction to cover a part of the heating pipe main body, so that The cover member further includes a cover plate including a cover plate body extending circumferentially from one end of the housing portion to cover the heating pipe body with the housing portion. The pump assembly according to claim 2, wherein an end surface of an end of the housing portion that is in abutment with the cover plate body in the circumferential direction is flush with an end surface of the cover plate body or the housing portion 0-5 mm beyond the end face of the cover body. The pump assembly according to claim 2, wherein the housing portion includes a main cover portion on a side of the heating pipe body facing away from the pump cover, and is bent from an outer edge of the main cover portion The fold extends to a side cover portion of the pump cover. The pump assembly according to claim 1, wherein the heater comprises a heating pipe main body, a heat conducting plate, and a first temperature protection device, the heating pipe main body is disposed on an outer end surface of the pump cover, and The heating tube main body includes a connection terminal and a heating portion, the connection terminal is provided at an end portion of the heating portion, the heat transfer plate is provided between the heating tube body and the pump cover, and the heat transfer plate includes: a protrusion A raised portion, the protruding portion protrudes outward along the axial direction of the pump casing main body and protrudes outward in the radial direction, the protruding portion corresponds to the connection terminal and is spaced from the connection terminal The first temperature protection device is disposed on the raised portion. The pump assembly for a dishwasher according to claim 5, wherein the number of the connection terminals is two, and the number of the protrusions is one and corresponds to any one of the two connection terminals. The pump assembly for a dishwasher according to claim 5, wherein the raised portion includes a first plate and a second plate, and the first plate is located radially inward of the heating pipe body, and The second plate is connected to the first plate, and the second plate extends radially outward from a connection point between the second plate and the first plate. The pump assembly for a dishwasher according to claim 7, wherein the raised portion further comprises: a third plate, the third plate is connected to the second plate, and the third plate is located at The third plate is further supported on an outer end surface of the pump cover in a radially outer side of the heating pipe body. The pump assembly for a dishwasher according to claim 7, wherein two sides of the first plate are respectively provided with heat insulation grooves. The pump assembly for a dishwasher according to claim 5, further comprising: a second temperature protection device, the second temperature protection device is attached to the heating part of the heating pipe body. The pump assembly for a dishwasher according to claim 10, wherein the first temperature protection device is a resettable temperature protection device, and the second temperature protection device is a non-resettable temperature protection device. The pump assembly for a dishwasher according to claim 5, wherein a cross section of the heating portion of the heating pipe body is trapezoidal. The pump assembly for a dishwasher according to claim 5, wherein an inner ring edge of the heat transfer plate and an inner ring edge of the pump cover are fixed by welding. A dishwasher, comprising a pump assembly for a dishwasher according to any one of claims 1-13.

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