CN215058445U - Modularized liquid pump, dish washing machine, washing machine and electric automobile heat management system - Google Patents

Abstract

The utility model provides a modularized liquid pump and a dish washer, a washing machine and an electric automobile heat management system applying the modularized liquid pump, wherein the modularized liquid pump comprises a base 10, a pump device 20 and a heating device 30; the pump device 20 is fixedly arranged on the base 10 and used for conveying liquid to the heating device 30; the heating device 30 is provided with a heat source and a heating flow channel 303 for liquid to flow, the heating flow channel 303 is folded and extended along the surface of the heat transfer surface, the contact time of the liquid in the heating flow channel 303 and the inner wall of the first shell is prolonged, the contact area of the heat transfer surface and the liquid is maximized, the convection heat exchange of the liquid and the heat transfer surface is more sufficient, and the heating efficiency is improved. Moreover, the pump unit 20 and the heating unit 30 are assembled on the base 10, so that the modular liquid pump is flat as a whole, and the modular liquid pump is modularized, greatly reduces the occupied space volume, and is easy to install and maintain.

Description

Modularized liquid pump, dish washing machine, washing machine and electric automobile heat management system

Technical Field

The utility model belongs to the technical field of fluid delivery machinery and specifically relates to a modularization liquid pump and application dish washer, washing machine and electric automobile heat management system of modularization liquid pump, IPC classification belong to F04D 29/58.

Background

Common household appliances to which liquid pumps are applied are dishwashers and washing machines. A dishwasher generally has functions of washing, sterilizing, drying, etc. in order to automatically wash tableware, and in order to melt oil and sterilize effectively, it is often necessary to heat water temperature for washing to about 72 ℃. The increasingly compact design of modern dishwashers often requires that the liquid pump and the heating device be integrated into a single structure, resulting in a structural requirement for a modular liquid pump.

The compact design requirements are also embodied in the thermal management system of the electric vehicle. The heat management system of the electric automobile uses the liquid pump to provide the circulating flowing power of the medium in the cooling liquid circulating pipeline, and uses the heating device to be started when the battery needs to be heated, so as to increase the temperature of the cooling liquid. After the liquid pump and the heating device are integrated into an integrated structure, the liquid pump and the heating device can become an optimal modularized integrated component of a battery pack heat management system and a finished automobile air conditioning system heat management system, and the intelligent and modularized development trend of a finished automobile control system is met.

Chinese utility model patent application CN110552893A discloses a heat pump, the delivery port of pump case intercommunication heating chamber sets up the heating member again in heating chamber to heat the rivers that heat the chamber through flowing through. However, this solution has the disadvantages: the heating flow channel is designed to be too simple, so that the heating efficiency is low; the liquid pump and the heating parts lack linkage fit, and when the liquid pump runs under load due to gas-liquid mixing, the heating parts are easy to dry. Therefore, although the existing liquid pump with integrated heating function meets the requirement of an integrated structure, certain defects still exist, and a continuous improved design is needed.

For terms and common general knowledge, see national Standard GB/T14278-: liquid pump and GB/T7021-.

Disclosure of Invention

In order to solve the existing technical problems mentioned in the background art, the utility model provides a modularization liquid pump, and use dish washer, washing machine and electric automobile heat management system of modularization liquid pump.

The utility model provides a modularized liquid pump, which comprises a base 10, a pump device 20 and a heating device 30; the pump device 20 is fixedly arranged on the base 10 and used for conveying liquid to the heating device 30; the heating device 30 has a heat source and a heating flow channel 303 for flowing liquid, and is characterized in that the heating flow channel 303 is folded and extended along a heat transfer surface of the heat source, so that the liquid and the heat transfer surface generate heat convection.

Specifically, the heating device 30 includes: a first housing 31 and a second housing 32 which enclose and are fixedly arranged on the base 10; a heat film 33 disposed on an outer side surface of the first housing 31 as the heat source; and a guide frame 34 disposed in the first casing 31 and enclosing an inner surface of the first casing 31 as the heat transfer surface to form the heating flow channel 303.

Specifically, the baffle frame 34 includes a cylinder 341, a radial baffle 343, and an axial baffle 344; the cylinder 341 is fixedly disposed in the first housing 31; the radial baffle 343 is disposed at the top end of the cylinder 341 and extends radially outward; the axial baffles 344 are arranged between the radial baffles 343 and the bottom surface of the first shell 31, spaced apart in the circumferential direction of the outer side surface of the cylinder 341; the inlet of the heating flow channel 303 is arranged at the top end of the cylinder 341 and/or the radial guide plate 343, the outlet of the heating flow channel 303 is arranged at the bottom end of the cylinder 341, and the heating flow channel 303 extends at two ends of the cylinder 341 in a turning manner and has at least two turns.

Specifically, the axial baffle 344 includes: an axial partition 3440, a first type baffle 3441 and a second type baffle 3442. The axial partition 3440 is arranged between any two heating flow channels 303 and used for partitioning the heating flow channels 303; the axial partition 3440 abuts against the first casing 31 and the second casing 32 in the radial direction of the cylindrical body 341, and the bottom end of the axial partition 3440 abuts against the bottom surface of the first casing 31. The first type baffle 3441 and the second type baffle 3442 are disposed between any two axial partitions 3440 in a vertically staggered manner, the first type baffle 3441 abuts against the first shell 31 and the second shell 32 in the radial direction of the cylinder 341, the top end of the first type baffle 3441 is connected to the radial baffle 343, and the bottom end of the first type baffle 3441 is spaced from the bottom surface of the first shell 31 by a certain height. The second type baffle 3442 is abutted to the first shell 31 in the radial direction of the cylinder 341, the top end of the second type baffle 3442 and the radial baffle 343 leave a gap with a certain height, and the bottom end is connected to the bottom surface of the first shell 31.

Specifically, first notches 3431 are circumferentially distributed on the outer edge of the radial baffle 343, and the first notches 3431 are abutted with the second shell 32 to form an inlet of the heating flow channel 303; or, first through holes 3432 are circumferentially distributed on the radial baffle 343 to form an inlet of the heating flow channel 303; further alternatively, second through holes 3412 are circumferentially distributed at the top end of the cylinder 341 to form an inlet of the heating flow channel 303.

Specifically, second notches 3411 are circumferentially distributed on the bottom of the cylinder 341, and the second notches 3411 are abutted with the first shell 31 to form an outlet of the heating flow channel 303; alternatively, a third through hole 3413 is circumferentially distributed at the bottom end of the cylinder 341 to form an outlet of the heating flow channel 303.

Preferably, the highest point of the first housing 31 has a level lower than a pump reference plane of the pump device 20.

Preferably, the thermal film 33 is disposed on the outer side of the first housing 31 at a position below the level of the pump reference surface of the pump device 20.

The utility model also provides a dish washer, washing machine and electric automobile heat management system all include above-mentioned modularization liquid pump.

The utility model discloses following beneficial effect has:

(1) the pump device and the heating device are assembled on the base, so that the modularized liquid pump is flat, the occupied space volume is greatly reduced while modularization is realized, and the modularized liquid pump is easy to install and maintain.

(2) The hot film is used as a heat source, the heat is transferred through the first shell made of the heat conducting material, the heated area of the liquid is increased, and the heating efficiency is improved.

(3) The heating flow channel is folded and extended along the surface of the heat transfer surface, so that the contact time of liquid in the heating flow channel and the inner wall of the first shell is prolonged, the contact area of the heat transfer surface and the liquid is maximized, the convection heat transfer of the liquid and the heat transfer surface is more sufficient, and the heating efficiency is improved.

(4) The level of the highest point of the first shell of the heating device is lower than the pump reference surface of the pump device, the liquid level in the heating cavity can be kept at the highest position, the first shell can be fully contacted with liquid, the area of convective heat exchange between the liquid and the heat transfer surface is maximized, and the heating efficiency is maximized.

(5) The heat film is arranged on the outer side surface of the first shell and below the level of the pump reference surface of the pump device, so that when the liquid level in the heating cavity is lower than the highest position, the phenomenon of dry burning of the heat film cannot occur because the heat film is not arranged on the outer side surface of the first shell higher than the liquid level.

(6) The base inner space is flat, and the cloth board area is big, and high-low voltage circuit part can arrange on same circuit board, not only saves complicated PCB and crosses line technology, still conveniently arranges components and parts. The circuit board has strong heat dissipation capability, and can use components with lower requirements and lower price, thereby reducing the cost.

Drawings

Fig. 1 is a schematic perspective view of a modular liquid pump provided by the present invention;

FIG. 2a is an axial cross-sectional view of the modular liquid pump;

FIG. 2b is an axial cross-sectional view of the heating device;

FIG. 3 is a perspective view of the second housing;

FIG. 4 is a schematic perspective view of the first housing;

FIG. 5a is a schematic perspective view of the guide frame from a top perspective;

FIG. 5b is a schematic plan view of the heating channel;

FIG. 6 is a perspective view of the pod from a bottom perspective;

FIG. 7 is a schematic view of another alternative design embodiment of the heating flow channel inlet;

FIG. 8 is a schematic view of yet another alternative design embodiment of the heating flow channel inlet;

FIG. 9 is a schematic view of another alternative design embodiment of the heating flow channel outlet;

FIG. 10 is a front view of the modular liquid pump in a standard installation;

fig. 11 is a perspective view of the first housing in a non-standard installation.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1, the present invention provides a modular liquid pump, which comprises a base 10, a pump device 20 and a heating device 30, wherein the pump device 20 is fixedly disposed on the base 10.

Referring to fig. 2a, the pump device 20 includes a rotor 21, a pump cover 22, and a pump body 23. The pump body 23 is fixedly arranged on the base 10, the rotor 21 is axially arranged in the center of the pump body 23, the pump cover 22 covers the opening of the pump body 23, and the inner wall of the pump cover 22 and the impeller 211 of the rotor 21 enclose a volute chamber of the pump device 20. The pump cover 22 is provided with a suction port 221 communicating with a water source and a pressing port communicating with the heating device 30 on an inner wall thereof, the suction port 221 is located in an axial direction of the impeller 211, the pressing port extends along a tangential direction of rotation of the rotor 21, and a pressing pipe 222 extending outward is formed on an outer wall of the pump cover 22.

The heating device 30 comprises a first shell 31, a second shell 32, a thermal film 33 and a flow guide frame 34.

The first housing 31 is made of a heat conductive material and has a single-opening cylindrical shape, the base 10 is provided with a mounting position 12 spaced apart from the pump device 20, and the contour of the mounting position 12 is adapted to the radial section of the first housing 31, so that the first housing 31 can be placed in the mounting position 12.

Referring to fig. 2a and 3, the second housing 32 is sleeved on the opening of the first housing 31, a first pipe 321 connected to the extruding pipe 222 and a second pipe 322 for discharging the liquid are disposed on an outer wall of the second housing 32, the first pipe 321 passes through the second housing 32 and forms a first communicating hole 3211 on an inner wall of the second housing 32, and the second pipe 322 passes through the second housing 32 and forms a second communicating hole 3221 in the second housing 32. The inner wall of the second housing 32 is provided with a mounting groove 323, and the mounting groove 323 is annular and is connected to the opening edge of the first housing 31. The opening edge of the first casing 31 is sleeved with a rubber ring 324, and the joint of the mounting groove 323 of the second casing 32 and the opening edge of the first casing 31 is sealed to prevent liquid and gas from leaking.

Referring to fig. 4, the thermal film 33 plated on the outer side wall of the first casing 31 is a heat source, and the first casing 31 is heated after the thermal film 33 is energized, so that the inner side wall of the first casing 31 becomes a heat transfer surface.

Referring to fig. 2a, 2b and 5a, a space enclosed by the first housing 31 and the second housing 32 is a heating chamber 300, and the diversion frame 34 divides the heating chamber 300 into a first cavity 301, a heating flow channel 303 and a second cavity 302 which are sequentially communicated. The first cavity 301 communicates with the first communication port 3211 and the inlet of the heating flow path 303, and the second cavity 302 communicates with the outlet of the heating flow path 303 and the second communication port 3221. The deflector shelf 34 is generally cylindrical and concentrically disposed within the heating chamber 300. The diversion frame 34 is provided with a plurality of positioning columns 342 at the top end opening of the cylinder 341 for abutting the diversion frame 34 and the second housing 32.

A radial baffle 343 and an axial baffle 344 are disposed on the outside of the cylinder 341. The radial guide plate 343 is disposed at the top end of the cylinder 341, extends from the outside of the cylinder 341 and abuts against the inner wall of the second housing 32, and a plurality of first notches 3431 are circumferentially distributed on the outer edge of the radial guide plate 343 to form an inlet of the heating flow channel 303. A plurality of second notches 3411 are circumferentially distributed at the circumferential bottom end of the cylinder 341, and the second notches 3411 are abutted against the bottom surface of the first housing 31 to form an outlet of the heating channel 303. The axial baffles 344 are arranged at intervals along the circumferential direction of the cylinder 341, and the axial baffles 344 are specifically divided into three types, i.e., an axial partition 3440, a first type baffle 3441, and a second type baffle 3442. The axial partition 3440 is provided between any two heating flow passages 303, and is used for partitioning the heating flow passages 303; the axial partition 3440 abuts against the first casing 31 and the second casing 32 in the radial direction of the cylindrical body 341, and the top end of the axial partition 3440 abuts against the radial baffle 343 and the bottom end abuts against the bottom surface of the first casing 31. The first type baffle 3441 and the second type baffle 3442 are disposed between any two axial partitions 3440 in a vertically staggered manner, the first type baffle 3441 abuts against the first shell 31 and the second shell 32 in the radial direction of the cylinder 341, the top end of the first type baffle 3441 is connected to the radial baffle 343, and the bottom end of the first type baffle 3441 is spaced from the bottom surface of the first shell 31 by a certain height. The second type baffle 3442 is abutted against the first shell 31 in the radial direction of the cylinder 341, and the top end of the second type baffle 3442 is spaced from the radial baffle 343 by a certain height and the bottom end is connected to the bottom surface of the first shell 31.

The radial baffles 343 cooperate with the three axial baffles 344 to form the direction of the heating channel 303: referring to the dashed examples in fig. 5a and 5b, the first notch 3431 extends axially downward along the outer side of the cylinder 341 to the bottom of the first shell 31, the 180 ° turn passes around the first type baffle 3441 and then extends axially upward along the outer side of the cylinder 341 to the radial baffle 343, and the 180 ° turn passes around the second type baffle 3442 and then extends axially downward along the outer side of the cylinder 341 to the second notch 3411. Thus, a plurality of heating flow channels 303 flowing in parallel are formed, which are independent from each other, and the inlet and the outlet of each heating flow channel 303 individually correspond to the heating flow channel 303 itself.

Referring to fig. 2a, 5a and 6, a radial partition 345 is radially disposed inside the cylinder 341 to separate the first cavity 301 from the second cavity 302. A third conduit 346 extends axially from the radial partition 345 and interfaces with a second communication port 3221; the third conduit 346 forms a third communication port 3461 at the lower end of the radial partition 345, communicating with the second chamber 302. A third conduit 346 communicates between the second cavity 302 and the second conduit 322 for liquid exiting the heating device 30.

A circuit board 11 is disposed in the base 10, the circuit board 11 is electrically connected to the thermal film 33 and the pump device 20, and controls the modular liquid pump of the present embodiment to perform the following operation processes: the pump device 20 pumps the liquid to be heated to the first cavity 301 of the heating device 30, and the liquid to be heated flows into the first cavity 301 and is divided into two flows through the first notch 3431 to enter the heating flow channel 303. After the heat film 33 is powered on, the temperature of the inner side wall of the first housing 31 rises to a preset heating temperature, and the liquid to be heated flows through the inner side wall of the first housing 31 to perform heat convection with the inner side wall, so that the temperature rises. The heated liquid flows out of the heating channel 303 through the second gap 3411, collects in the second chamber 302, and finally exits the heating device 30 through the third conduit 346 and the second conduit 322.

Because the modularization liquid pump of this embodiment, base 10 inner space is flat, and the cloth board area is big, and high-low voltage circuit part can arrange on same circuit board 11, not only saves complicated PCB and crosses the line technology, still conveniently arranges the components and parts. The circuit board 11 has strong heat dissipation capability, and can use components with lower requirements and lower price, thereby reducing the cost.

In this embodiment, the heating channel 303 forms an axial turn-back up and down at two ends of the cylinder 341 to guide the liquid to flow in a baffling manner, so as to prolong the contact time between the liquid and the inner side wall of the first shell 31, so that the convection heat transfer between the liquid and the heat transfer surface is more sufficient, and the heating efficiency is higher.

The modular liquid pump provided in this embodiment has an alternative design for the inlet of the heating channel 303: referring to fig. 7, first through holes 3432 are circumferentially distributed on the radial baffle 343, or, referring to fig. 8, second through holes 3412 are circumferentially distributed at the top end of the cylinder 341 of the baffle frame 34, and the alternative design of the inlet of the heating flow channel 303 also plays a role in communicating the first cavity 301 with the heating flow channel 303. Similarly, the outlet of the heating flow channel 303 is alternatively designed, referring to fig. 9, third through holes 3413 are circumferentially distributed at the bottom end of the cylinder 341 of the diversion frame 34, and also play a role in communicating the heating flow channel 303 with the second cavity 302.

The modular liquid pump provided by the embodiment has an optimized design for the material selection of the guide frame 34: the flow guide frame 34 is made of heat conducting materials, the temperature of the cylinder 341 is improved by utilizing heat transfer of liquid, the liquid in the first cavity 301 is preheated, the liquid in the second cavity 302 and the third pipeline 346 is insulated, and the heating efficiency is improved. Because the axial guide plate 344 has a heat transfer function, the liquid in the heating flow channel 303 can exchange heat in the deflection, and the heat preservation effect is achieved.

The modular liquid pump provided by the embodiment is installed in a way that the following positional relationship is satisfied: referring to fig. 10, the highest point of the first housing 31 (not visible in fig. 10) of the heating device 30 should be at a level lower than the pump reference plane of the pump device 20 (i.e., a horizontal plane passing through the axial centerline of the rotor 21, as shown by the dashed line in fig. 10). In this arrangement, the level of liquid in the heating chamber 300 can be kept at its highest level, the first housing 31 (not visible in fig. 10) can be in full contact with the liquid, the area of convective heat transfer between the liquid and the heat transfer surface is maximised and the heating efficiency is maximised.

When the modular liquid pump adopts a non-standard installation mode, that is, the horizontal height of the first housing 31 is higher than the pump reference plane of the pump device 20, if the pump device 20 has a gas-liquid mixing working condition, the liquid level in the heating cavity 300 is lower than the highest position, the first housing 31 above the liquid level cannot be contacted with the liquid, and the hot film 33 of the part of the first housing 31 can be dried, so that the hot film 33 is easily damaged. Based on this, referring to fig. 11, the thermal film 33 may be designed in a layout that does not completely cover the outer side surface of the first housing 31, for example, by disposing the thermal film 33 at a position (a plane indicated by a dotted line in fig. 11) below the level of the pump reference surface corresponding to the non-standard mounting manner on the outer side surface of the first housing 31, the occurrence of the dry burning phenomenon of the thermal film 33 can be prevented.

The modular liquid pump provided by the embodiment can be applied to equipment with liquid heating requirements, such as washing machines, dish washing machines, electric automobile thermal management systems and the like, and can realize functions such as hot water washing, cooling liquid heating and the like.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (12)

1. Modular liquid pump comprising a pump device (20) and a heating device (30); -said pump means (20) being adapted to deliver liquid to said heating means (30); the heating device (30) has a heat source and a heating flow path (303) for flowing liquid, and is characterized in that:

the device also comprises a base (10), wherein the pump device (20) and the heating device (30) are fixedly arranged on the base (10);

the heating device (30) comprises:

a first shell (31) and a second shell (32) which mutually enclose and are fixedly arranged on the base (10);

a thermal film (33) disposed on an outer side surface of the first housing (31) as the heat source;

and a flow guide frame (34) which is arranged in the first shell (31) and forms the heating flow channel (303) by enclosing with the inner side surface of the first shell (31) which is used as a heat transfer surface;

the heating flow channel (303) is folded and extended along the heat transfer surface of the heat source, so that the liquid and the heat transfer surface of the heat source generate heat convection.

2. The modular liquid pump of claim 1 wherein the baffle shelf (34) comprises a cylinder (341), a radial baffle (343), and an axial baffle (344);

the cylinder (341) is fixedly arranged in the first shell (31); the radial guide plate (343) is arranged at the top end of the cylinder body (341); the axial guide plates (344) are arranged between the radial guide plates (343) and the bottom surface of the first shell (31) and are arranged at intervals along the circumferential direction of the outer side surface of the cylinder (341);

the inlet of the heating flow channel (303) is arranged at the top end of the cylinder body (341) and/or on the radial guide plate (343), the outlet of the heating flow channel (303) is arranged at the bottom end of the cylinder body (341), and the heating flow channel (303) is folded back at two ends of the cylinder body (341) and has at least two folds.

3. The modular liquid pump as claimed in claim 2, wherein the axial baffle (344) comprises an axial partition (3440), the axial partition (3440) being provided between any two heating flow passages (303) for dividing the heating flow passages (303); the axial partition plate (3440) is abutted against the first shell (31) and the second shell (32) in the radial direction of the cylinder (341), the top end of the axial partition plate (3440) is connected with the radial guide plate (343), and the bottom end is abutted against the bottom surface of the first shell (31).

4. The modular liquid pump as recited in claim 3, wherein the axial baffles (344) further comprise first type baffles (3441) and second type baffles (3442), the first type baffles (3441) and the second type baffles (3442) being staggered up and down between any two of the axial baffles (3440);

the first baffle plate (3441) is abutted with the first shell (31) and the second shell (32) in the radial direction of the cylinder (341), the top end of the first baffle plate (3441) is connected with the radial baffle plate (343), and a gap with a certain height is reserved between the bottom end of the first baffle plate and the bottom surface of the first shell (31);

the second type baffle plate (3442) is abutted with the first shell (31) in the radial direction of the cylinder (341), a gap with a certain height is reserved between the top end of the second type baffle plate (3442) and the radial baffle plate (343), and the bottom end of the second type baffle plate is abutted with the bottom surface of the first shell (31).

5. The modular liquid pump as claimed in claim 2, characterized in that the radial baffle (343) has first notches (3431) distributed circumferentially on its outer side to form the inlet of the heating channel (303);

or first through holes (3432) are circumferentially distributed on the radial guide plate (343) to form an inlet of the heating flow channel (303);

or, second through holes (3412) are circumferentially distributed at the top end of the cylinder (341) to form an inlet of the heating flow channel (303).

6. The modular liquid pump as claimed in claim 2, wherein the bottom end of the cylinder (341) is circumferentially distributed with second notches (3411) constituting outlets of the heating flow channel (303);

or third through holes (3413) are circumferentially distributed at the bottom end of the cylinder (341) to form an outlet of the heating flow channel (303).

7. Modular liquid pump according to claim 1, characterized in that a circuit board (11) for controlling the operation of the pump means (20) and the heating means (30) is arranged in the base (10).

8. Modular liquid pump according to claim 1, characterized in that the highest point of the first housing (31) has a level below a pump reference surface of the pump device (20).

9. Modular liquid pump according to claim 1, characterized in that the thermal membrane (33) is arranged on the outer side of the first housing (31) in a position below the level of the pump reference surface of the pump device (20).

10. A dishwasher, comprising a modular liquid pump as claimed in any one of claims 1 to 8.

11. A washing machine comprising a modular liquid pump according to any one of claims 1 to 8.

12. An electric vehicle thermal management system comprising the modular liquid pump of any of claims 1-8.

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