CN216199064U - Heating pump with snap ring and dish washing machine with same - Google Patents

Abstract

The utility model discloses a heating pump with a snap ring and a dish washer with the heating pump, wherein the heating pump with the snap ring comprises a heating assembly, an impeller and a pump body, the heating assembly is used for heating water flow, a snap ring is arranged at the water outlet of the heating assembly, and an annular groove is formed in the bottom of the snap ring; the water inlet of the impeller is communicated with the water outlet of the heating assembly, the water inlet of the impeller is inserted into the groove, the water inlet of the impeller is rotatably arranged in the groove, and the impeller is arranged on an output shaft of the motor; impeller and snap ring all locate the inside of the pump body. The application provides a take heat pump of snap ring can reduce the backward flow volume of rivers, improves hydraulic efficiency.

Description

Heating pump with snap ring and dish washing machine with same

Technical Field

The utility model relates to the technical field of heating equipment design, in particular to a heating pump with a clamping ring. Furthermore, the utility model also relates to a dishwasher comprising the heating pump with the snap ring.

Background

The dishwasher pump with the heating function in the prior art generally comprises a pump body, an impeller, a heating assembly, a motor, a mechanical fixing part and the like, wherein a heating pipe is distributed in a containing cavity of the pump body or directly mounted on the pump body, so that the volume of the pump body is increased, and the heat exchange efficiency of the heating pipe indirectly mounted on the pump body is not high. In addition, the impeller rotates along with the motor shaft to throw liquid out of the outlet of the pump body, and because the impeller needs to rotate, a rotating part impeller, a static part pump body and a heating assembly cannot be in contact with each other, a gap exists between the impeller and the pump body, leakage is easily caused in the gap, the leakage amount is increased to reduce the hydraulic efficiency, the pump body and the motor connecting part are mostly connected with the motor through the pump head rear cover, the pump head end cover is connected with the shell, the leakage point is increased, and the hydraulic efficiency is reduced.

In summary, how to solve the problem of low hydraulic efficiency is a problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a heat pump with a snap ring, which can reduce the backflow of water flow and improve hydraulic efficiency.

It is another object of the present invention to provide a dishwasher including the above heat pump with a snap ring.

In order to achieve the above purpose, the utility model provides the following technical scheme:

the application provides a take heat pump of snap ring includes:

the heating assembly is used for heating water flow, a clamping ring is arranged at a water outlet of the heating assembly, and an annular groove is formed in the bottom of the clamping ring;

the water inlet of the impeller is communicated with the water outlet, the water inlet is inserted into the groove, the water inlet of the impeller is rotatably arranged in the groove, and the impeller is arranged on an output shaft of the motor;

the pump body, the impeller with the snap ring is all located the inside of the pump body.

Preferably, the diameter of the inner wall surface of the snap ring is smaller than the diameter of the water inlet.

Preferably, the distance between the water inlet and the bottom surface of the groove is greater than the distance between the water inlet and the side surface of the groove.

Preferably, the pump body with the motor is connected, the pump body with the periphery wall of the one end that the motor is connected is equipped with spinner and buckle, the internal perisporium of motor be equipped with the draw-in groove that the spinner corresponds, the spinner install in the inside of draw-in groove and with the draw-in groove joint, the buckle with the outside joint of draw-in groove.

Preferably, the pump casing of the pump body is an integrated pump casing.

Preferably, a mechanical seal movable ring and a mechanical seal static ring are arranged in a gap formed between the bottom of the impeller and the pump body, the mechanical seal movable ring is arranged at the joint of the impeller and the motor, the mechanical seal static ring is arranged on the pump body, and the lower end face of the mechanical seal movable ring is attached to the upper end face of the mechanical seal static ring.

Preferably, a streamline flow channel communicated with the outlet of the pump body is arranged in the pump body.

Preferably, the impeller is an integrally formed impeller.

Preferably, the pump body is a flame retardant pump body.

A dishwasher comprises a heating pump, wherein the heating pump is the heating pump with the snap ring.

When the heating pump with the snap ring is used, water flow enters from the heating assembly and reaches the interior of the impeller through the snap ring, the impeller is arranged on an output shaft of the motor, the output shaft of the motor drives the impeller to rotate, the water flow is heated in the pump body through the rotation of the impeller, the water flow which is fully heated flows out of the pump body, the groove is formed in the bottom of the snap ring, the water inlet of the impeller is inserted into the groove, the gap is formed between the water inlet of the impeller and the groove, so that the impeller can be rotatably arranged in the groove, when the water flow flows to the impeller, part of the water flow thrown out by the rotation of the impeller is blocked by the outer wall of the snap ring, and the other part of the water flow enters the gap, and the water flow entering the gap can impact the bottom surface of the groove due to the horizontal arrangement of the heating pump, so that the flow speed of the water flow is reduced and cannot pass through the gap, and even rivers can pass through the clearance, rivers after through the clearance get back to in the impeller, the impeller rotates and continues to drive rivers and flow out, rather than backward flow to heating element, consequently can reduce the backward flow volume of rivers, improve hydraulic efficiency.

Furthermore, as the gap is increased on the path of water flow backflow, the pressure of the increased part of the gap can be obtained according to the Bernoulli equation, so that the water flow is not easy to pass through the gap to block the backflow.

In addition, the diameter of the inner wall surface of the clamping ring is smaller than the diameter of the water inlet of the impeller, when water flows through the clamping ring to the water inlet of the impeller, the flowing cross section area is increased, so that the pressure is increased, the water flow backflow is further hindered, the cavitation risk can be reduced, and the stability of the impeller is improved.

The utility model also provides a dishwasher comprising the heating pump with the snap ring, which has the same using effect as the heating pump with the snap ring because of the heating pump with the snap ring.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is an exploded view of a heat pump with a snap ring according to the present invention;

FIG. 2 is a cross-sectional view of a heat pump with a snap ring according to the present invention;

FIG. 3 is an enlarged view of position A of FIG. 2;

fig. 4 is a schematic structural view of a rotary buckle and a buckle of the heat pump with the snap ring provided by the utility model.

In FIGS. 1-4:

10 is a motor, 20 is an impeller, 30 is a pump body, 40 is a heating component and 50 is a mechanical seal;

101 is an output shaft, 201 is a front cover plate, 202 is a blade, 203 is a rear cover plate, 301 is an outlet, 304 is a turnbuckle, 305 is a buckle, 402 is a heating part, 403 is a snap ring, 404 is a sheet metal disc, 405 is a water inlet pipe, 501 is a mechanical seal moving ring, and 502 is a mechanical seal static ring;

4031 is an inner annular rib, 4032 is an outer annular rib, 4041 is a central hole, 4033 is a gap, and 2011 is a water inlet.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The core of the utility model is to provide a heating pump with a snap ring, which can reduce the backflow of water flow and improve the hydraulic efficiency. Another core of the present invention is to provide a dishwasher including the above heat pump with a snap ring.

Referring to fig. 1-4, fig. 1 is an exploded view of a heat pump with a snap ring; FIG. 2 is a cross-sectional view of a heat pump with a snap ring; FIG. 3 is an enlarged view of position A of FIG. 2; fig. 4 is a schematic structural view of a rotary buckle and a buckle of the heat pump with the snap ring provided by the utility model.

The heating pump with the clamping ring 403 comprises a heating assembly 40, an impeller 20 and a pump body 30, wherein the heating assembly 40 is used for heating water flow, the clamping ring 403 is arranged at the water outlet of the heating assembly 40, and an annular groove is formed in the bottom of the clamping ring 403; the water inlet of the impeller 20 is communicated with the water outlet of the heating assembly 40, the water inlet of the impeller 20 is inserted into the groove, the water inlet of the impeller 20 is rotatably arranged in the groove, and the impeller 20 is arranged on the output shaft 101 of the motor 10; the impeller 20 and the snap ring 403 are both disposed inside the pump body 30.

Specifically, the heating assembly 40 includes a water inlet pipe 405, a heating member 402, a snap ring 403 and a sheet metal disc 404, the heating member 402 is fixedly connected to the bottom of the sheet metal disc 404, the water inlet pipe 405 is installed at a central hole 4041 of the sheet metal disc 404, the sheet metal disc 404 is installed at one end of the pump body 30, and the snap ring 403 is installed at a water outlet of the water inlet pipe 405.

The impeller 20 includes a front cover plate 201, a rear cover plate 203, and a blade 202 connecting the front cover plate 201 and the rear cover plate 203, a port of the front cover plate 201 is a water inlet 2011 of the impeller 20, the front cover plate 201 is inserted into a groove of the snap ring 403, that is, the impeller 20 is coaxial with the snap ring 403, the front cover plate 201 and the groove have a gap 4033, so that the impeller 20 is rotatably disposed in the groove, the snap ring 403 is prevented from obstructing the rotation of the impeller 20, the impeller 20 is mounted on the output shaft 101 of the motor 10, the output shaft 101 of the motor 10 is inserted into the pump body 30, and therefore the impeller 20, the output shaft 101 of the motor 10, the snap ring 403, and the heating element 402 are all disposed inside the pump body 30.

During the use, the heat pump level sets up, rivers pass through inlet tube 405 and get into heating element 40, the snap ring 403 gets into in the impeller 20 of flowing through, because impeller 20 installs on the output shaft 101 of motor 10, therefore output shaft 101 drives impeller 20 rotatory, do work through the rotation of impeller 20, bring the rivers in the impeller 20 to the impeller 20 outside, and contact with heating element 402 in order to heat, the pump body 30 is equipped with export 301, the rivers after the heating flow out from the export 301 of the pump body 30, high-speed rotation through impeller 20 makes rivers high-speed and heating element 402 fully contact and the heat transfer, can improve heat exchange efficiency.

Because the heating pump is horizontally arranged, and the impeller 20 and the snap ring 403 have the gap 4033, when the impeller 20 rotates to drive water flow to be thrown out, a part of water flow is blocked by the outer wall of the snap ring 403, a part of water flow enters the gap 4033, a part of water flow entering the gap 4033 collides with the bottom surface of the groove to reduce the flow velocity, and cannot pass through the gap 4033, and a part of water flow can still pass through the gap 4033 after colliding, but the water flow passing through the gap 4033 returns to the water inlet 2011 of the impeller 20, so that the water flow enters the impeller 20, the impeller 20 rotates to drive the water flow to continuously flow out, so that the water flow is prevented from flowing back to the heating assembly 40, the backflow amount is reduced, and the hydraulic efficiency is improved.

In addition, since the heating member 402, the water inlet pipe 405, the snap ring 403 and the metal plate disc 404 are combined into one heating assembly 40, the integration of the components is improved and the structure is compact while the heating efficiency is satisfied, and at the same time, since only the heating member 402 and the snap ring 403 are completely located inside the pump body 30, the volume of the pump body 30 can be reduced.

Specifically, the periphery of inlet tube 405 is equipped with the round fixed slot, and the centre bore 4041 of panel beating disc 404 is equipped with the arch of a week barb formula, makes inlet tube 405 be fixed in panel beating disc 404 through the joint of arch and fixed slot on, and is optional, also can be through fixed inlet tube 405 of other modes and panel beating disc 404.

Optionally, the heating member 402 is a ring of heating tubes or other heating members 402 disposed at the bottom of the sheet metal disc 404.

Optionally, the heating member 402 and the sheet metal disc 404 are fixedly connected by welding or other methods.

On the basis of the above embodiment, the distance between the water inlet 2011 and the bottom surface of the groove is greater than the distance between the water inlet 2011 and the side surface of the groove.

Specifically, the snap ring 403 includes an inner annular rib 4031 and an outer annular rib 4032, a gap between an outer wall of the inner annular rib 4031 and the front cover plate 201 is a first gap, and the size of the first gap is greater than or equal to 0.5mm and less than or equal to 1.5 mm; the gap between the inner wall of the outer annular rib 4032 and the front cover plate 201 is a second gap, and the size of the second gap is greater than or equal to 0.5mm and less than or equal to 1.5 mm; the gap between the bottom surface of the groove and the front cover plate 201 is a third gap, and the size of the third gap is greater than or equal to 1mm and less than or equal to 2 mm. Optionally, the size ranges of the first gap, the second gap and the third gap may be other suitable size ranges according to practical situations.

Since the snap ring 403 does not rotate together with the impeller 20 when the impeller 20 rotates, a gap is required, and in the actual operation process, the impeller 20 cannot completely rotate around the axis due to the existence of force and machining error, and if the sizes of the first gap, the second gap and the third gap are too small, the risk of increasing friction due to operation contact is generated, and the operation noise is increased, so that the efficiency and the operation life of the pump body 30 are reduced; if the sizes of the first gap, the second gap and the third gap are too large, the backflow of water flow is increased, and the hydraulic efficiency is reduced, so that the hydraulic performance is affected, and the energy consumption is increased.

Therefore, by setting the first gap, the second gap, and the third gap to appropriate values, the efficiency and the operating life of the pump body 30 can be increased without affecting the hydraulic efficiency.

The value of the third gap is greater than that of the first gap, and the pressure of the third gap is greater than that of the first gap according to the bernoulli equation, so that the water flow is not easy to flow from the first gap to the third gap, and the water flow return loss can be further reduced.

In addition to the above embodiment, the diameter of the inner wall surface of the snap ring 403 is smaller than the diameter of the water inlet 2011.

Specifically, the diameter of the inner wall surface of the inner annular rib 4031 of the snap ring 403 is slightly smaller than the diameter of the water inlet 2011, and since water flows from the snap ring 403 to the impeller 20 through the water inlet 2011 of the impeller 20, the flow passing diameter is increased, so that the flow rate of the water flow is reduced, according to the bernoulli equation, the pressure of the water inlet 2011 area of the impeller 20 is increased, the pressure increase can reduce the risk of cavitation, so that the stability of the impeller 20 is increased, and the backflow of the water flow from the groove can be prevented.

The diameter of the front end cap insertion groove portion is larger than the diameter of the water inlet 2011 of the impeller 20, and is stepped, so that the diameter of the inner wall surface of the snap ring 403 is slightly smaller than the diameter of the water inlet 2011, and optionally, the diameter of the inner wall surface of the snap ring 403 is slightly smaller than the diameter of the water inlet 2011 by reducing the wall thickness of the inner annular rib 4031 or in other ways.

On the basis of the above embodiment, the pump body 30 is connected with the motor 10, the outer peripheral wall of one end of the pump body 30 connected with the motor 10 is provided with the turn buckle 304 and the buckle 305, the inner peripheral wall of the motor 10 is provided with the clamping groove corresponding to the turn buckle 304, the turn buckle 304 is installed inside the clamping groove and clamped with the clamping groove, and the buckle 305 is clamped with the outer side of the clamping groove.

Specifically, the peripheral wall of the end is connected with motor 10 to the pump body 30 is equipped with turn-buckle 304, and the internal perisporium of motor 10 is equipped with the draw-in groove that corresponds, and with turn-buckle 304 the draw-in groove of precessing from the left side of draw-in groove, the top and the right side of draw-in groove all are equipped with the wall that shelters from in order to restrict the axial displacement and the anticlockwise rotation of the pump body 30, and this anticlockwise rotation indicates that the direction of water inlet 2011 from impeller 20 sees, and the anticlockwise rotation that follow-up mentions or clockwise rotation all sees from this direction.

The upper right side of the turn buckle 304 is located to the buckle 305, and the right side of the clamping groove is attached to the left side of the buckle 305 so as to prop against the buckle 305, so that the pump body 30 can be limited to rotate clockwise, and the smooth screwing-in clamping groove of the turn buckle 304 can be ensured by locating the buckle 305 above.

Through the connection of the rotary buckle 304, the buckle 305 and the clamping groove, the motor 10 and the pump body 30 can be reliably connected under the condition of vibration, the assembly is simple and convenient, and the matching size of the pump head and the motor 10 can be more precise.

The turnbuckle 304 is divided into a slope section and a plane section from right to left to improve the manufacturability of the assembly, and optionally, the turnbuckle 304 may be provided in other shapes.

Specifically, the number of the turnbuckles 304 is four, so as to ensure reliable connection between the motor 10 and the pump body 30, one of the turnbuckles 305 is provided, so that cost can be saved under the condition that the rotation of the pump body 30 is limited, and optionally, three or more turnbuckles 304 may be provided, and a plurality of turnbuckles 305 may be provided.

Alternatively, the right side of the locking groove may be free of a shielding wall, and the rotation of the pump body 30 is limited by providing the locking hooks 305 on both sides of the rotary buckle 304, or the axial movement and circumferential rotation of the pump body 30 are limited by other means.

On the basis of the above embodiments, the pump casing of the pump body 30 is an integrated pump casing.

Because the pump case is the integral type pump case, and pump body 30 is connected through buckle 305, the mode of turn-buckle 304 with motor 10, can reduce and reveal the risk to improve hydraulic efficiency. Alternatively, the pump housing may be a split structure.

On the basis of any of the above schemes, a mechanical seal moving ring 501 and a mechanical seal stationary ring 502 are disposed in a gap formed between the bottom of the impeller 20 and the pump body 30, the mechanical seal moving ring 501 is mounted at a joint between the impeller 20 and the motor 10, the mechanical seal stationary ring 502 is mounted on the pump body 30, and a lower end face of the mechanical seal moving ring 501 is attached to an upper end face of the mechanical seal stationary ring 502.

Specifically, the mechanical seal 50 is disposed between the impeller 20 and the pump body 30, the mechanical seal 50 includes a mechanical seal moving ring 501 and a mechanical seal stationary ring 502, the mechanical seal moving ring 501 is disposed at a position where the output shaft 101 of the motor 10 is installed in cooperation with the impeller 20, and the mechanical seal stationary ring 502 is disposed on the pump body 30 and is disposed in cooperation with the mechanical seal moving ring 501.

The mechanical seal 50 prevents water from flowing out from the gap where the output shaft 101 is connected to the pump body 30, and reduces the leakage amount, thereby improving hydraulic efficiency.

In addition to any of the above embodiments, a streamlined flow passage communicating with the outlet 301 of the pump body 30 is provided inside the pump body 30.

Specifically, a streamline flow channel communicated with the outlet 301 is circumferentially provided in the pump body 30, and the fully heated water flows to the outlet 301 through the streamline flow channel.

Because the flow channel is a streamline flow channel, the friction resistance of the water flow when passing through the streamline flow channel is small, thereby improving the flow capacity and hydraulic efficiency of the pump body 30.

The pump body 30 has a pump head with excellent hydraulic performance characteristics, which may further improve hydraulic efficiency, and optionally, may be a common pump head or a pump head with other characteristics.

Alternatively, the flow channel may be another type of flow channel.

In addition to any of the above embodiments, the impeller 20 is an integrally formed impeller 20.

Specifically, the front cover plate 201, the blades 202 and the rear cover plate 203 of the impeller 20 are integrally formed, so that the strength of the impeller 20 can be improved, the leakage risk can be reduced, the hydraulic efficiency can be improved, and the manufacturing cost of the impeller 20 can be reduced.

Alternatively, the impeller 20 may be formed by separate welding.

On the basis of any of the above schemes, the pump body 30 is a flame-retardant pump body 30.

Since the heating member 402 is disposed inside the pump body 30 and the impeller 20 rotates at a high speed inside the pump body 30, the temperature inside the pump body 30 is high, and accidents such as combustion and explosion of the pump body 30 caused by an excessively high internal temperature can be avoided by using the flame-retardant pump body 30.

Besides the above heat pump with snap ring, the present invention also provides a dishwasher including the above embodiment, and the structure of other parts of the dishwasher is referred to the prior art, and will not be described herein again.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The present invention provides a heat pump with a snap ring and a dishwasher having the same. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims (10)

1. A heat pump with a snap ring, comprising:

the heating assembly (40) is used for heating water flow, a clamping ring (403) is arranged at a water outlet of the heating assembly (40), and an annular groove is formed in the bottom of the clamping ring (403);

the water inlet (2011) of the impeller (20) is communicated with the water outlet, the water inlet (2011) is inserted into the groove, the water inlet (2011) of the impeller (20) is rotatably arranged in the groove, and the impeller (20) is installed on the output shaft (101) of the motor (10);

the pump body (30), impeller (20) with snap ring (403) all locate the inside of pump body (30).

2. A heat pump with snap ring according to claim 1, characterized in that the diameter of the inner wall surface of the snap ring (403) is smaller than the diameter of the water inlet (2011).

3. A heat pump with snap ring according to claim 1, characterized in that the distance of the water inlet (2011) from the bottom of the groove is larger than the distance of the water inlet (2011) from the side of the groove.

4. The heat pump with the snap ring according to claim 1, wherein the pump body (30) is connected to the motor (10), a rotary buckle (304) and a buckle (305) are arranged on an outer peripheral wall of one end of the pump body (30) connected to the motor (10), a clamping groove corresponding to the rotary buckle (304) is arranged on an inner peripheral wall of the motor (10), the rotary buckle (304) is installed inside the clamping groove and clamped to the clamping groove, and the buckle (305) is clamped to an outer side of the clamping groove.

5. A heat pump with snap ring according to claim 4, characterized in that the pump body (30) has a pump housing of one piece.

6. The heat pump with the snap ring according to any one of claims 1 to 5, wherein a mechanical seal rotating ring (501) and a mechanical seal stationary ring (502) are disposed in a gap formed between the bottom of the impeller (20) and the pump body (30), the mechanical seal rotating ring (501) is disposed at a connection position of the impeller (20) and the motor (10), the mechanical seal stationary ring (502) is mounted on the pump body (30), and a lower end surface of the mechanical seal rotating ring (501) is fitted with an upper end surface of the mechanical seal stationary ring (502).

7. A heat pump with snap ring according to any of claims 1-5, characterized in that the interior of the pump body (30) is provided with a streamlined flow passage communicating with the outlet (301) of the pump body (30).

8. A heat pump with snap ring according to any of claims 1-5, characterized in that the impeller (20) is an integrally formed impeller (20).

9. A heat pump with snap ring according to any of claims 1-5, characterized in that the pump body (30) is a flame retardant pump body (30).

10. A dishwasher comprising a heat pump, wherein the heat pump is a heat pump with a clasp as claimed in any one of claims 1 to 9.

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