A dishwasher integrated circulation heat pump power module
By designing a reasonable metal parts mounting part, thermal silicone and thermostat structure in the dishwasher, temperature detection is carried out away from the heating pipe, and a tooth-shaped edge rolling riveting assembly and a double sealing system are used, the pump shell in the existing technology is solved. The problem of cumbersome design and low water temperature detection accuracy achieves high-precision water temperature detection and good sealing performance.
Patent Information
- Application Number
- CN202110137088.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2021-02-01
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2041-02-01
AI Technical Summary
The pump housing design of existing dishwashers is too cumbersome, which increases the risk of water leakage. The close distance between the thermostat and the heating pipe leads to low water temperature detection accuracy and poor practicality.
Design a dishwasher integrated circulation heat pump power module, which is equipped with a metal part mounting part, thermal silicone and a thermostat to conduct temperature detection away from the heating pipe, and combines the pump shell and the tooth-shaped edge of the steel plate to roll and rivet assembly, using double-fold Sealing system to reduce the risk of seals and water leakage.
It achieves high accuracy of water temperature detection, good sealing performance and easy assembly, and improves motor performance and practicality.
Smart Images
Figure CN112780573B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of dishwashers, and in particular to an integrated circulating heat pump power module for a dishwasher. Background Art
[0002] Household appliances such as dishwashers have been widely used in modern families, and the core of such household appliances is the circulating heat pump, which includes a heating component, a pump housing and a motor component, which can increase the water pressure and heat the water. In the prior art, the pump housing is designed as a two-stage type, namely the housing body and the housing chassis, but the design and assembly process is too complicated, and waterproofing and other issues must be considered at the same time, increasing the risk of water leakage; in addition, the thermostat is close to the heating tube, which is easy to interfere with the water temperature detection accuracy, resulting in low water temperature detection accuracy and poor practicality. Summary of the invention
[0003] In view of the deficiencies in the prior art, the object of the present invention is to provide an integrated circulation heat pump power module for a dishwasher which has a reasonable structural design, is easy to assemble, has high water temperature detection accuracy, has good sealing performance and is good in practicality.
[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a dishwasher integrated circulation heat pump power module, comprising a heating component, a pump housing and a motor component, wherein the pump housing is provided with a pump chamber portion, a water outlet portion, a motor stator assembly mounting portion, a sealing system mounting portion and a metal part mounting portion; the metal part mounting portion is arranged on one side of the pump housing, and the metal part mounting portion is provided with a metal part, a thermal conductive silicone, a buckle cover and a thermostat, one side of the metal part is integrally arranged with the pump housing, and the other side of the metal part is connected to the thermal conductive silicone, and is connected to the thermostat through the thermal conductive silicone; the thermostat is fixed to the pump housing by a buckle cover; an impeller is arranged in the pump chamber portion, a stator assembly is arranged in the motor stator assembly mounting portion, a rotor assembly is arranged in the stator assembly, the rotor assembly includes a rotating shaft, one end of the rotating shaft is connected to the impeller, and the sealing system mounting portion is provided with a first sealing system and a second sealing system.
[0005] The present invention is further configured as follows: a steel plate is provided at the end of the pump housing facing away from the motor assembly, a heating tube is welded on the steel plate, a thermal protector is provided at the heat transfer position between the steel plate and the heating tube, and at least one grounding terminal is provided on the steel plate.
[0006] The present invention is further configured as follows: a first wire is provided between a pin terminal of the thermostat and one end of the heating tube, and the pin terminal of the thermostat is connected to one end of the heating tube through the first wire; another pin terminal of the thermostat is connected to a power supply.
[0007] The present invention is further configured as follows: a water inlet pipe installation hole is provided in the middle of the steel plate, and a water inlet pipe is fixedly installed in the water inlet pipe installation hole.
[0008] The present invention is further configured as follows: a tooth-shaped edge is provided at the edge of the steel disc, the tooth-shaped edge is assembled with the pump casing as an integral structure after being bent, and an O-ring is provided between the steel disc and the pump casing.
[0009] The present invention is further configured as follows: the first sealing system includes a sealing dynamic ring, a sealing static ring and a rubber ring, the sealing dynamic ring is arranged close to the impeller, the sealing static ring is arranged in the rubber ring, and the sealing dynamic ring is pressed against the sealing static ring away from the impeller end, and a seal is formed between the rubber ring and the inner wall surface of the sealing system mounting part.
[0010] The present invention is further configured such that: the second sealing system includes a leak-proof sealing ring, and a seal is formed between the rotating shaft and the inner wall surface of the sealing system installation part through the leak-proof sealing ring.
[0011] The present invention is further configured such that: a water outlet pipe is fixedly installed on the water outlet portion.
[0012] The advantages of the present invention are: compared with the prior art, the structural setting of the present invention is more reasonable, the metal parts installation part is set on one side of the pump casing, the temperature controller detects and controls the temperature with the water in the pump body through the thermal conductive silicone and the metal parts, and the temperature controller is far away from the heating tube, which can avoid the interference of the heating tube with the detection accuracy, and finally achieve accurate detection of the water temperature feedback signal; the pump chamber part, the water outlet part, the motor stator assembly installation part, the sealing system installation part and the metal parts installation part are designed as an integrated structure, which reduces the sealing parts, avoids water leakage, improves the installation accuracy of the rotor assembly, and improves the motor performance; the pump casing and the steel plate are integrated by rolling riveting the tooth-shaped edge, which reduces the assembly of screws and other parts; the first sealing system and the second sealing system constitute a double seal, which can effectively avoid water leakage. The structural design is reasonable, the assembly is convenient, the water temperature detection accuracy is high, the sealing performance is good and the practicability is good.
[0013] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;
[0015] Figure 2 is a cross-sectional schematic diagram of an embodiment of the present invention;
[0016] Figure 3 Schematic cross-sectional view of a pump casing according to an embodiment of the present invention. DETAILED DESCRIPTION
[0017] In the description of this embodiment, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "back", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore, cannot be understood as limiting the present invention. In addition, if the terms "first", "second", and "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0018] See also Figure 1 , Figure 2 and Figure 3 The present invention discloses an integrated circulation heat pump power module for a dishwasher, comprising a heating component, a pump housing 1 and a motor component 2. The pump housing 1 is provided with a pump cavity 11, a water outlet 12, a motor stator assembly mounting portion 13, a sealing system mounting portion 14 and a metal component mounting portion 15; the metal component mounting portion 15 is arranged on one side of the pump housing 1, and the metal component mounting portion 15 is provided with a metal component 3, a thermal conductive silicone 4, a buckle cover 5 and a thermostat 6. One side of the metal component 3 is integrally arranged with the pump housing 1, and the metal component 3 is integrally arranged with the pump housing 1. The other side of the accessory 3 is connected to the thermally conductive silicone 4, and is connected to the temperature controller 6 through the thermally conductive silicone 4; the temperature controller 6 is fixed to the pump housing 1 through a snap-on cover 5; an impeller 7 is arranged in the pump chamber 11, a stator assembly 8 is arranged in the motor stator assembly mounting portion 13, a rotor assembly 9 is arranged in the stator assembly 8, and the rotor assembly 9 includes a rotating shaft 91, one end of the rotating shaft 91 is connected to the impeller 7, and the sealing system mounting portion 14 is provided with a first sealing system and a second sealing system.
[0019] Preferably, the metal part 3 is injection molded in the pump housing 1, and the surface of the metal part 3 is exposed after injection molding, and is in direct contact with the water in the pump housing 1; in order to increase the thermal conductivity, a thermal conductive silicone 4 is arranged between the metal part 3 and the thermostat 6 to improve the thermal conductivity coefficient; a buckle cover 5 is pressed on the thermostat 6, and is assembled into one with the pump housing 1 after pressing; the buckle cover 5 is matched with the buckle position on the pump housing 1.
[0020] In order to make the structural setting of the present invention more reasonable, as a preference, the pump housing 1 described in this embodiment is provided with a steel plate 10 at the end facing away from the motor assembly, a heating tube 16 is welded on the steel plate 10, a thermal protector 17 is provided at the heat transfer position between the steel plate 10 and the heating tube 16, and at least one grounding terminal 18 is provided on the steel plate 10.
[0021] Preferably, the thermal protector 17 is placed at the optimal position for heat transfer between the heating tube 16 and the steel plate 10.
[0022] A first wire 19 is provided between a pin terminal of the thermostat 6 and one end of the heating tube 16 , and the pin terminal of the thermostat 6 is connected to one end of the heating tube 16 through the first wire 19 ; another pin terminal of the thermostat 6 is connected to a power source.
[0023] One pin terminal on the thermal protector 17 is connected to the heating tube 16 , and the other pin terminal of the thermal protector 17 is connected to a power source.
[0024] A water inlet pipe installation hole is provided in the middle of the steel plate 10, and a water inlet pipe 20 is fixedly installed in the water inlet pipe installation hole.
[0025] The edge of the steel plate 10 is provided with a tooth-shaped edge 101, which is assembled with the pump housing 1 as an integral structure after being bent, and an O-ring 21 is provided between the steel plate 10 and the pump housing 1. Preferably, the pump housing 1 and the steel plate 10 are riveted together by rolling the tooth-shaped edge 101, reducing the assembly of components such as screws. The steel plate 10 is provided with more than two single connection terminals or more than one double connection terminal (two in a pack).
[0026] The first sealing system includes a sealing dynamic ring 22, a sealing static ring 23 and a rubber ring 24. The sealing dynamic ring 22 is arranged close to the impeller 7, and the sealing static ring 23 is arranged in the rubber ring 24. The sealing dynamic ring 22 presses the sealing static ring 23 away from the impeller end, and a seal is formed between the rubber ring 24 and the inner wall surface of the sealing system mounting part 14.
[0027] The second sealing system includes a leakproof sealing ring 25 , through which a seal is formed between the rotating shaft 91 and the inner wall surface of the sealing system mounting portion 14 .
[0028] The water outlet portion 12 is fixedly mounted with a water outlet pipe 26 .
[0029] In actual application, the metal parts installation part is set on one side of the pump casing. The thermostat detects and controls the temperature of the water in the pump body through thermal conductive silicone and metal parts. The thermostat is far away from the heating tube, which can avoid the interference of the heating tube with the detection accuracy, and finally achieve accurate detection of the water temperature feedback signal; the pump chamber, the water outlet, the motor stator assembly installation part, the sealing system installation part and the metal parts installation part are designed as an integrated structure, which reduces the seals, avoids water leakage, improves the installation accuracy of the rotor assembly, and improves the motor performance; the pump casing and the steel plate are integrated by rolling riveting the tooth-shaped edge to reduce the assembly of screws and other parts; the first sealing system and the second sealing system constitute a double seal, which can effectively avoid water leakage. The structure is reasonable in design, easy to assemble, with high water temperature detection accuracy, good sealing performance and good practicality.
[0030] The specific description of the present invention in the above embodiments is only used to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Technical engineers in this field may make some non-essential improvements and adjustments to the present invention based on the contents of the above invention, which fall within the scope of protection of the present invention.
Claims
1. A dishwasher integrated circulation heat pump power module, comprising a heating component, a pump housing (1) and a motor component (2), characterized in that: The pump housing (1) is provided with a pump chamber portion (11), a water outlet portion (12), a motor stator assembly mounting portion (13), a sealing system mounting portion (14) and a metal component mounting portion (15); the metal component mounting portion (15) is provided on one side of the pump housing (1), and the metal component mounting portion (15) is provided with a metal component (3), a thermal conductive silicone (4), a buckle cover (5) and a thermostat (6); one side of the metal component (3) is integrally provided with the pump housing (1), and the other side of the metal component (3) is connected to the thermal conductive silicone (4) through the thermal conductive silicone. The rubber (4) is connected to the temperature controller (6); the temperature controller (6) is fixed to the pump housing (1) by a snap-fit cover (5); an impeller (7) is arranged in the pump chamber (11); a stator assembly (8) is arranged in the motor stator assembly mounting portion (13); a rotor assembly (9) is arranged in the stator assembly (8); the rotor assembly (9) includes a rotating shaft (91); one end of the rotating shaft (91) is connected to the impeller (7); and the sealing system mounting portion (14) is provided with a first sealing system and a second sealing system; A steel plate (10) is provided at the end of the pump housing (1) facing away from the motor assembly, a heating tube (16) is welded to the steel plate (10), a heat protector (17) is provided at the heat transfer position between the steel plate (10) and the heating tube (16), and at least one grounding terminal (18) is provided on the steel plate (10); A first wire (19) is provided between a pin terminal of the temperature controller (6) and one end of the heating tube (16), and a pin terminal of the temperature controller (6) and one end of the heating tube (16) are connected via the first wire (19); another pin terminal of the temperature controller (6) is connected to a power source; A water inlet pipe installation hole is provided in the middle of the steel plate (10), and a water inlet pipe (20) is fixedly installed in the water inlet pipe installation hole; The edge of the steel plate (10) is provided with a tooth-shaped edge (101), and the tooth-shaped edge (101) is assembled with the pump casing (1) to form an integrated structure after being bent, and an O-ring (21) is provided between the steel plate (10) and the pump casing (1); The first sealing system comprises a sealing dynamic ring (22), a sealing static ring (23) and a rubber ring (24); the sealing dynamic ring (22) is arranged close to the impeller (7); the sealing static ring (23) is arranged inside the rubber ring (24); the sealing dynamic ring (22) is away from the impeller end to press the sealing static ring (23); and a seal is formed between the rubber ring (24) and the inner wall surface of the sealing system mounting part (14); The second sealing system comprises a leakproof sealing ring (25), and a seal is formed between the rotating shaft (91) and the inner wall surface of the sealing system mounting part (14) through the leakproof sealing ring (25).
2. The integrated cycle heat pump power module for a dishwasher according to claim 1, characterized in that: The water outlet portion (12) is fixedly mounted with a water outlet pipe (26).