CN211609678U - Dish washing machine - Google Patents
Dish washing machine Download PDFInfo
- Publication number
- CN211609678U CN211609678U CN201921392989.XU CN201921392989U CN211609678U CN 211609678 U CN211609678 U CN 211609678U CN 201921392989 U CN201921392989 U CN 201921392989U CN 211609678 U CN211609678 U CN 211609678U
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- Prior art keywords
- pump
- centrifugal
- dishwasher
- water
- drain pump
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- Control Of Non-Positive-Displacement Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Washing And Drying Of Tableware (AREA)
Abstract
The utility model provides a dishwasher, dishwasher has centrifugal drain pump, centrifugal drain pump includes impeller and pump case, the impeller with the pump case forms interference fit. Through making impeller and pump case form interference fit, solved because the not enough problem that causes unable whole discharge of water of drain pump centrifugal force. The flexible body is arranged at the contact part of the blades and the pump shell, so that the abrasion between the blades and the pump shell is reduced, and the service life of the centrifugal drainage pump is prolonged. The dishwasher can control the rotating speed of the centrifugal draining pump according to the water amount in the water cup by arranging the control system, so that the centrifugal draining pump rotates at a high speed when the water amount of the water cup is large, the draining efficiency is improved, the centrifugal draining pump rotates at a low speed when the water amount of the water cup is low, the abrasion between the blades and the shell is reduced while the water in the pump body is completely drained, and the service life of the centrifugal draining pump is prolonged.
Description
Technical Field
The utility model relates to a tableware cleaning device especially relates to a dish washer.
Background
In the existing market, after tableware is washed by a dish washing machine, residual water is left in the bottom of a cup of the dish washing machine, a drainage pump and a pipeline, clean residual water cannot be completely removed, bacteria can be bred in the residual water in the drainage pump and the cup, the taste is strong, and the tableware is stored in the dish washing machine for a long time, so that secondary pollution is easily caused.
SUMMERY OF THE UTILITY MODEL
To the deficiency among the above-mentioned prior art, the utility model aims to provide a dish washer can effectively discharge the residual water in the dish washer, reduces the secondary pollution of tableware.
The utility model provides a pair of dish washer has centrifugal drain pump, centrifugal drain pump includes impeller and pump case, the impeller with the pump case forms interference fit.
Preferably, the impeller comprises a hub and blades, at least a portion of which are hard bodies made of a hard material; at least a portion of the blades are flexible bodies made of a flexible material, the flexible bodies are located on the ends of the blades remote from the hub, and the flexible bodies form an interference fit with the pump casing.
Preferably, the flexible body and the hard body are processed by a two-shot molding process to form the blade.
Preferably, the flexible body is connected to the hard body by a connector or an adhesive.
Preferably, the water pump further comprises a control system, wherein the control system is used for detecting the pressure or the liquid level in the water cup and adjusting the rotating speed of the centrifugal draining pump according to the pressure or the liquid level.
Preferably, the control system comprises a detection device and a controller; the detection device is arranged in the water cup and is used for detecting the pressure or the liquid level in the water cup and sending the pressure data or the liquid level data to the controller; the controller receives and processes the pressure data or liquid level data and adjusts the rotational speed of the centrifugal drain pump according to the pressure or liquid level.
Preferably, the detection device is a pressure sensor arranged at the bottom of the water cup, and the controller adjusts the rotating speed of the centrifugal draining pump according to the measurement data of the pressure sensor.
Preferably, the detection device is a liquid level meter arranged in a water cup, and the controller adjusts the rotating speed of the centrifugal draining pump according to the measurement data of the liquid level meter.
Preferably, the controller sends a second control command to the centrifugal drain pump to make the centrifugal drain pump linearly decrease from a first preset rotation speed to a second preset rotation speed within a preset time.
Compared with the prior art, the utility model provides a dish washer forms interference fit through making impeller and pump case, has solved because the not enough whole exhaust problem of water that causes of drain pump centrifugal force. The flexible body is arranged at the contact part of the blades and the pump shell, so that the abrasion between the blades and the pump shell is reduced, and the service life of the centrifugal drainage pump is prolonged. The dishwasher can control the rotating speed of the centrifugal draining pump according to the water amount in the water cup by arranging the control system, so that the centrifugal draining pump rotates at a high speed when the water amount of the water cup is large, the draining efficiency is improved, the centrifugal draining pump rotates at a low speed when the water amount of the water cup is low, the abrasion between the blades and the pump shell is reduced while the water in the pump body is completely drained, and the service life of the centrifugal draining pump is prolonged.
The above-mentioned technical characteristics can be combined in various suitable ways or replaced by equivalent technical characteristics as long as the purpose of the invention can be achieved.
Drawings
The invention will be described in more detail hereinafter on the basis of non-limiting examples only and with reference to the accompanying drawings. Wherein:
FIG. 1 is a schematic structural diagram of a dishwasher provided by the present invention;
FIG. 2 is a block diagram of a control system and a centrifugal drain pump in the dishwasher according to the present invention;
fig. 3 is a schematic structural view of a centrifugal drain pump in a dishwasher according to the present invention.
Description of reference numerals:
1. a centrifugal drain pump;
2. a water cup;
3. an inner container;
4. a detection device;
5. a controller;
11. a hub;
12. a hard body;
13. a flexible body;
14. a pump housing.
Detailed Description
For making the purpose, technical solution and advantages of the present invention clearer, it will be right below that the technical solution of the present invention is clearly and completely described, based on the specific embodiments of the present invention, all other embodiments obtained by the ordinary skilled person in the art without creative work belong to the scope protected by the present invention.
As shown in fig. 1 to 3, the present embodiment provides a dishwasher, a centrifugal drain pump 1, and a control system.
The centrifugal drain pump 1 comprises an impeller comprising a hub 11 and blades arranged on the hub 11, and a pump housing 14. The blade comprises a hard body 12 and a flexible body 13, wherein the hard body 12 is made of a hard material and is called as a hard body 12, one end of the hard body is fixed on the hub 11, and the other end of the hard body is connected with the flexible body; the flexible body 13 is made of a flexible material and is located at the end of the blade remote from the hub, the flexible body 13 forming an interference fit with the pump casing 14. When the centrifugal drainage pump 1 is started to drain, the impeller rotates to drive liquid to enter the pump shell 14, and the impeller and the pump shell 14 have no gap, so that water in the pump body can be completely drained to the drainage pipe, and the problems of bacteria breeding, peculiar smell and the like are reduced. Because the end of the blade contacting with the pump case 14 is the flexible body 13, when the pump runs, the hard contact between the impeller and the pump case 14 can be effectively avoided to cause movement interference, the abrasion between the impeller and the pump case 14 can be effectively reduced, and the service life of the centrifugal drainage pump 1 is prolonged. In this embodiment, the hard body 12 and the flexible body 13 are processed by a two-shot molding process to form the blade. Besides, the hard body 12 and the flexible body 13 can be connected and fixed through a connecting piece to form a blade; or the hard body 12 and the flexible body 13 are bonded by an adhesive to form the blade. In an optimized scheme, the thickness of the flexible body 13 is gradually increased along the extending direction of the blade to the hub 11, and the surfaces of the connecting parts of the flexible body 13 and the hard bodies 12 are smoothly connected.
The control system can adjust the rotation speed of the centrifugal drain pump 1 according to the amount of water in the water cup 2 to more efficiently drain the water in the dishwasher. Since the amount of water in the cup 2 is related to the level of the water level in the cup 2 or the water pressure in the cup 2, the amount of water in the cup 2 can be characterized by detecting the level of the water or the pressure in the cup 2.
The control system comprises a detection device 4 and a controller 5; the detection device 4 is arranged in the water cup 2, and the detection device 4 is used for detecting the pressure or the liquid level in the water cup 2 and sending pressure data or liquid level data to the controller 5; the controller 5 receives and processes the pressure data or the liquid level data and adjusts the rotational speed of the centrifugal drain pump 1 in dependence on the pressure or the liquid level.
When the water quantity is represented by water pressure, the detection device 4 is a pressure sensor which is arranged at the bottom of the water cup 2 and is used for detecting the pressure of water in the water cup 2 and sending the detected pressure data of the water to the controller 5; the controller 5 receives and processes the pressure data, and when the pressure of the water is greater than the preset pressure, the controller 5 sends a first control instruction to the centrifugal type draining pump 1 to enable the centrifugal type draining pump 1 to operate at a first preset rotating speed; when the pressure of the water is less than or equal to the preset pressure, the controller 5 sends a second control instruction to the centrifugal drain pump 1, so that the rotation speed of the centrifugal drain pump 1 is linearly reduced from the first preset rotation speed to a second preset rotation speed within the preset time, and then the centrifugal drain pump 1 is operated at the second preset rotation speed until the water drainage is finished. Wherein the preset pressure can be set as the pressure corresponding to the water cup 2 with larger volume. Wherein the first preset rotating speed is greater than the second preset rotating speed.
In another embodiment, the water level is used to represent the water amount, and the detection device 4 is a liquid level meter arranged in the water cup 2, and the liquid level meter detects the liquid level in the water cup 2 and sends the detected liquid level data to the controller 5; the controller 5 receives and processes the liquid level data, and when the liquid level in the water cup 2 is higher than a preset liquid level, the controller 5 sends a first control instruction to the centrifugal draining pump 1 to enable the centrifugal draining pump 1 to operate at a first preset rotating speed; when the liquid level in the water cup 2 is lower than or equal to the preset liquid level, the controller 5 sends a second control instruction to the centrifugal draining pump 1, so that the rotating speed of the centrifugal draining pump 1 is linearly reduced from the first preset rotating speed to a second preset rotating speed within the preset time, and then the centrifugal draining pump 1 runs at the second preset rotating speed until the draining is finished. Wherein, the preset liquid level can be set as the liquid level corresponding to the water cup 2 with larger quantity. Wherein the first preset rotating speed is greater than the second preset rotating speed.
After the washing mode of the dish washer is finished, water on the wall of the inner container 3 can flow into the water cup 2 at the bottom along the inner wall of the dish washer, all the washed water is concentrated at the bottom of the water cup 2, at the moment, the dish washer starts to enter a drainage mode, at the moment, the water cup 2 is at a high liquid level, the liquid level detected by the liquid level meter is higher than a preset liquid level, the controller 5 controls the centrifugal drainage pump 1 to be started and rotate at a high speed at a first preset rotating speed, water is driven to generate centrifugal force to be discharged from a centrifugal outlet, and because the water volume in the water cup 2 is large, at the moment, the flexible body 13 is in. When the liquid level detected by the liquid level meter is equal to or lower than the preset liquid level, the water amount in the water cup 2 is small at the moment, the resistance of water is not enough to isolate the blades from the pump shell 14, the flexible body 13 on the blades is in contact with the pump shell 14 to generate abrasion, at the moment, the controller 5 controls the centrifugal draining pump 1 to gradually reduce the rotating speed of the centrifugal draining pump from the first preset rotating speed to the second preset rotating speed, and then the centrifugal draining pump 1 rotates at the low speed at the second preset rotating speed, so that the centrifugal draining pump 1 can still completely drain the water in the pump shell 14 when the centrifugal force is insufficient due to the elimination of the gap between the impeller and the pump shell 14, and the low-speed operation can reduce the abrasion between the impeller and the pump shell 14 and prolong the service life.
Finally, it should be noted that: the above embodiments and examples are only used to illustrate the technical solution of the present invention, but not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments and examples, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments or examples may still be modified, or some of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments or examples of the present invention.
Claims (9)
1. A dishwasher having a centrifugal drain pump, the centrifugal drain pump comprising an impeller and a pump housing, the impeller forming an interference fit with the pump housing; the impeller comprises a hub and blades, at least one part of the blades is a hard body made of hard material; at least a portion of the blades are flexible bodies made of a flexible material, the flexible bodies are located on the ends of the blades remote from the hub, and the flexible bodies form an interference fit with the pump casing.
2. The dishwasher of claim 1, wherein the flexible body and the hard body are processed by a two-shot molding process to form a blade.
3. The dishwasher of claim 1, wherein the flexible body is connected to the hard body by a connector or an adhesive.
4. The dishwasher of any one of claims 1 to 3, further comprising a control system for detecting a pressure or level of liquid within the water cup and adjusting the rotational speed of the centrifugal drain pump in accordance with the pressure or level of liquid.
5. The dishwasher of claim 4, wherein the control system comprises a detection device and a controller; the detection device is arranged in the water cup and is used for detecting the pressure or the liquid level in the water cup and sending pressure data or liquid level data to the controller; the controller receives and processes the pressure data or liquid level data, and the controller adjusts the rotation speed of the centrifugal draining pump according to the pressure or the liquid level.
6. The dishwasher of claim 5, wherein the detection device is a pressure sensor disposed at a bottom of the water cup, and the controller adjusts the rotation speed of the centrifugal drain pump according to a measurement data of the pressure sensor.
7. The dishwasher of claim 5, wherein the detection device is a level gauge disposed within the water cup, and the controller adjusts the rotational speed of the centrifugal drain pump according to measurement data of the level gauge.
8. The dishwasher of claim 6, wherein the controller sends a second control command to the centrifugal drain pump to cause the centrifugal drain pump to linearly decrease from a first predetermined rotational speed to a second predetermined rotational speed within a predetermined time.
9. The dishwasher of claim 7, wherein the controller sends a second control command to the centrifugal drain pump to linearly decrease the rotational speed of the centrifugal drain pump from a first predetermined rotational speed to a second predetermined rotational speed within a predetermined time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921392989.XU CN211609678U (en) | 2019-08-26 | 2019-08-26 | Dish washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921392989.XU CN211609678U (en) | 2019-08-26 | 2019-08-26 | Dish washing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211609678U true CN211609678U (en) | 2020-10-02 |
Family
ID=72617638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921392989.XU Expired - Fee Related CN211609678U (en) | 2019-08-26 | 2019-08-26 | Dish washing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211609678U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112971668A (en) * | 2021-03-29 | 2021-06-18 | 珠海格力电器股份有限公司 | Dishwasher, method and device for controlling operation of dishwasher, and storage medium |
-
2019
- 2019-08-26 CN CN201921392989.XU patent/CN211609678U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112971668A (en) * | 2021-03-29 | 2021-06-18 | 珠海格力电器股份有限公司 | Dishwasher, method and device for controlling operation of dishwasher, and storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201002 |