CN211299860U

CN211299860U - Dish washing machine

Info

Publication number: CN211299860U
Application number: CN201921732023.6U
Authority: CN
Inventors: 赵海民; 黄绍庆; 张林峰; 李曙光
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2019-10-15
Filing date: 2019-10-15
Publication date: 2020-08-21
Anticipated expiration: 2029-10-15

Abstract

The utility model relates to a dish washing machine, including steam generator and inner bag, steam generator's water inlet is equipped with the inlet tube, steam generator's steam outlet with the inner bag intercommunication, be equipped with flow control unit on the inlet tube, the last temperature detection spare that is equipped with of steam generator is used for detecting steam generator's temperature, flow control unit with temperature detection spare electric connection. Pass through in the use temperature detects a detection steam generator's temperature, flow control unit basis the temperature value adjustment that the temperature detected an acquisition the fluence of inlet tube to the adjustment water yield among the steam generator avoids the water yield to hang down to lead to steam generator to burn out, and perhaps the water yield is too high to lead to the condition emergence that can't make water form steam rapidly, and the stability of final guarantee steam generator steam production reduces the dish washer defective rate.

Description

Dish washing machine

Technical Field

The utility model relates to a kitchen utensil field especially relates to a dish washer.

Background

Dish washer mainly used cleans the tableware, in order to improve the washing effect, provides steam for the dish washer inner chamber through set up steam generator in dish washer to reach effects such as drying and disinfection. The stability of the steam generated from the steam generator directly affects the washing performance of the dishwasher. But generally, the stability of the steam generated from the steam generator is poor, resulting in a high defective rate of the dish washer.

SUMMERY OF THE UTILITY MODEL

Accordingly, there is a need for a dishwasher to ensure stability of steam generated from a steam generator and reduce a reject ratio of the dishwasher.

The utility model provides a dish washer, includes steam generator and inner bag, steam generator's water inlet is equipped with the inlet tube, the inlet tube be used for with the water source intercommunication, steam generator's steam outlet with the inner bag intercommunication, be equipped with flow control unit on the inlet tube, the last temperature detection piece that is equipped with of steam generator is used for detecting steam generator's temperature, flow control unit with temperature detection piece electric connection.

Above-mentioned scheme provides a dish washer, passes through in the use the temperature detects a detection steam generator's temperature, flow control unit basis the temperature value adjustment that the temperature detected an acquisition the fluence of inlet tube, thereby the adjustment water yield among the steam generator avoids the water yield to hang down to lead to steam generator to burn out, and perhaps the water yield is too high to lead to the condition that can't make water form steam rapidly to take place, and the stability of final guarantee steam generator steam production reduces the dish washer defective rate.

In one embodiment, the temperature detecting member is disposed on a case of the steam generator for detecting a case temperature of the steam generator.

In one embodiment, the temperature sensing member is disposed inside a case of the steam generator.

In one embodiment, a water pump is arranged on the water inlet pipe, the water pump is located at the upstream of the flow control unit, and the water pump is electrically connected with the flow control unit and the temperature detection piece.

In one embodiment, the flow control unit is a flow control valve for adjusting the flow rate in the water inlet pipe, the flow control valve includes a valve body, a valve element gear, a motor and a motor gear, an inlet and an outlet of the valve body are respectively communicated with the water inlet pipe, the valve element is disposed in the valve body, the valve element gear is connected with the valve element and used for driving the valve element to rotate, a rotating shaft of the motor is connected with the motor gear and used for driving the motor gear to rotate, the motor gear is engaged with the valve element gear, and the motor is electrically connected with the temperature detection element.

In one embodiment, the dishwasher further comprises a controller, the controller is provided with a comparison module and an execution module which are electrically connected with each other, the comparison module is electrically connected with the temperature detection part and is used for comparing the relation between the temperature value detected by the temperature detection part and a preset allowable temperature range, and the execution module is electrically connected with the motor.

In one embodiment, the dishwasher further comprises a controller, the controller is provided with a comparison module and an execution module which are electrically connected with each other, the comparison module is electrically connected with the temperature detection part and is used for comparing the relation between the temperature value detected by the temperature detection part and a preset allowable temperature range, and the execution module is electrically connected with the flow control unit.

In one embodiment, the maximum value of the allowable temperature range is 120 ℃ and the minimum value of the allowable temperature range is 102 ℃.

In one embodiment, the dishwasher further comprises a water storage device, the water inlet pipe is communicated between the water storage device and the water inlet of the steam generator, a water inlet main pipeline is arranged at the water inlet of the water storage device, and a first switch valve is arranged on the water inlet main pipeline.

In one embodiment, the dishwasher further comprises a water storage device, the water inlet pipe is communicated between the water storage device and the water inlet of the steam generator, an auxiliary pipeline is arranged between the water storage device and the inner container, and a second switch valve is arranged on the auxiliary pipeline.

Drawings

FIG. 1 is a schematic structural view of a dishwasher according to the present embodiment;

FIG. 2 is a schematic view of the construction of a flow control unit in the dishwasher of FIG. 1;

FIG. 3 is a flow chart of a control method of the dishwasher according to the present embodiment.

Description of reference numerals:

10. a dishwasher; 11. a water storage device; 12. a steam generator; 121. a temperature detection member; 13. an inner container; 131. a tableware basket; 132. a spray head; 133. a washing pump; 134. a heater; 135. a drain pipe; 136. draining pump; 14. a water inlet pipe; 141. a flow control unit; 1411. a valve body; 1412. a valve core; 1413. a spool gear; 1414. a motor; 1415. a motor gear; 142. a water pump; 15. a controller; 16. a water inlet main pipeline; 161. a first on-off valve; 17. a second on-off valve; 20. a tableware.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention can be embodied in many different forms other than those specifically described herein, and it will be apparent to those skilled in the art that similar modifications can be made without departing from the spirit and scope of the invention, and it is therefore not to be limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

As shown in FIG. 1, in one embodiment, a dishwasher 10 is provided and includes a steam generator 12 and a tub 13. The water inlet of the steam generator 12 is provided with a water inlet pipe 14, the water inlet pipe 14 is used for being communicated with a water source, and the water inlet pipe 14 is provided with a flow control unit 141. The steam outlet of the steam generator 12 is communicated with the inner container 13, and the generated steam is conveyed into the inner container 13. The steam generator 12 is provided with a temperature detector 121 for detecting the temperature of the steam generator 12, and the flow control unit 141 is electrically connected to the temperature detector 121.

The power of the general steam generator during operation fluctuates, which results in poor stability of the steam generator generating steam, but the dishwasher is generally directly communicated with the mains supply, and the difficulty and the consumption for realizing the stability of the power are high. In the using process of the device, the temperature of the steam generator 12 is detected by the temperature detecting part 121, and the flow control unit 141 adjusts the flow guiding quantity of the water inlet pipe 14 according to the temperature value obtained by the temperature detecting part 121, so that the water quantity entering the steam generator 12 is adjusted, the situation that the steam generator 12 is dried due to too low water quantity in the steam generator 12 or water cannot be rapidly formed due to too high water quantity is avoided, the stability of steam generation of the steam generator 12 is finally guaranteed, and the reject ratio of the dishwasher 10 is reduced.

Specifically, in one embodiment, the temperature sensing member 121 is disposed on the case of the steam generator 12 for sensing the case temperature of the steam generator 12. That is, by acquiring the shell temperature of the steam generator 12, it is determined whether the amount of water in the steam generator 12 meets the requirement.

Alternatively, the temperature of other locations of the steam generator 12 may be detected, as long as the steam generation condition and the water amount condition in the steam generator 12 can be reflected.

The temperature detecting member 121 may be a temperature sensor or other devices capable of detecting temperature, and is not particularly limited herein.

Specifically, the temperature sensing member 121 may be disposed inside the case of the steam generator 12, thereby improving the accuracy of sensing.

Further, in an embodiment, as shown in fig. 1, a water pump 142 is disposed on the water inlet pipe 14, the water pump 142 is located upstream of the flow control unit 141, and the water pump 142 is electrically connected to both the flow control unit 141 and the temperature detection member 121.

The water pump 142 is configured to provide power for the flow of water in the water inlet pipe 14, and the water pump 142 is electrically connected to the temperature detecting member 121 and the flow control unit 141, so that the water pump 142 can be turned off when water supply to the steam generator 12 is not required. Or the flow rate of the water entering the steam generator 12 is controlled in cooperation with the flow control unit 141 by adjusting the water pumping capacity of the water pump 142.

Specifically, if the water flow rate adjusting process is divided into a coarse adjusting process and a fine adjusting process, the water pump 142 may be used to directly control the flow rate in the water inlet pipe 14 during the coarse adjusting process, and the flow rate control unit 141 may be used to cooperatively realize the fine adjusting process, so as to improve the adjusting precision.

Specifically, in one embodiment, as shown in fig. 2, the flow control unit 141 is a flow control valve for adjusting the flow rate of the inlet pipe 14, and the flow control valve includes a valve body 1411, a valve core 1412, a valve core gear 1413, a motor 1414 and a motor gear 1415. The inlet and the outlet of the valve body 1411 are respectively communicated with the water inlet pipe 14, the valve core 1412 is arranged in the valve body 1411, the valve core gear 1413 is connected with the valve core 1412 and used for driving the valve core 1412 to rotate, the rotating shaft of the motor 1414 is connected with the motor gear 1415 and used for driving the motor gear 1415 to rotate, the motor gear 1415 is meshed with the valve core gear 1413, and the motor 1414 is electrically connected with the temperature detection piece 121.

The motor 1414 adjusts the rotation direction and the rotation speed according to the temperature value detected by the temperature detector 121, so as to control the motor gear 1415 to rotate, further adjust the valve core gear 1413 to rotate, and realize the control of the valve core 1412. Thereby adjusting the position of the valve core 1412 in the valve body 1411, changing the cross-sectional area of the flow passage in the valve body 1411, and adjusting the flow rate.

When the water pump 142 is disposed in the dishwasher 10, the motor 1414 can be electrically connected to the water pump 142, so as to cooperate the water pump 142 with the motor 1414.

Specifically, the electrical connection between the water pump 142, the motor 1414 and the temperature detector 121 may be a direct electrical connection or an indirect electrical connection.

For example, in one embodiment, the dishwasher 10 further includes a controller 15, the controller 15 being provided with a comparison module and an execution module electrically connected to each other. The comparing module is electrically connected to the temperature detecting element 121 and configured to compare a relationship between a temperature value detected by the temperature detecting element 121 and a preset allowable temperature range, and the executing module is electrically connected to the flow control unit 141.

Therefore, after the temperature value detected by the temperature detector 121 is transmitted to the comparison module, the comparison module transmits the comparison result to the execution module, and the execution module controls the flow control unit 141 to operate according to the received comparison result.

When the flow control unit 141 comprises the motor 1414, the execution module is electrically connected to the motor 1414 to directly control the forward rotation or reverse rotation of the motor 1414. When the dishwasher 10 includes the water pump 142, the controller 15 is also electrically connected to the water pump 142 to control the on/off of the water pump 142.

Specifically, in one embodiment, when the comparison module compares the temperature value detected by the temperature detecting element 121 with a preset allowable temperature range, the maximum value of the allowable temperature range is 120 ℃, and the minimum value of the allowable temperature range is 102 ℃. If the temperature value detected by the temperature detector 121 is greater than 120 ℃, the execution module controls the flow control unit 141 to increase, so that the water flow entering the steam generator 12 is increased; when the temperature detected by the temperature detecting member 121 is less than 102 ℃, the execution module controls the flow control unit 141 to be turned down so that the flow rate of water into the steam generator 12 is reduced.

Further, in one embodiment, as shown in fig. 1, the dishwasher 10 further includes a water storage device 11, the water inlet pipe 14 is communicated between the water storage device 11 and the water inlet of the steam generator 12, a water inlet main pipe 16 is disposed at the water inlet of the water storage device 11, and a first switch valve 161 is disposed on the water inlet main pipe 16. The amount of water in the water storage means 11 is controlled, and when water needs to be supplied to the water storage means 11, the first on-off valve 161 is opened.

An auxiliary pipeline is arranged between the water storage device 11 and the inner container 13, and a second switch valve 17 is arranged on the auxiliary pipeline. The water in the water storage device 11 can directly enter the inner container 13 through the auxiliary pipeline to supply water for the washing process.

Further, as shown in fig. 1, a dish basket 131 and a spray head 132 are further provided in the inner container 13. The dishes 20 to be washed are placed in the dish basket 131, and the spray head 132 sprays the dishes 20. A circulation pipeline is further disposed between the spray head 132 and the cavity of the inner container 13, and the circulation pipeline can guide the washing water in the cavity of the inner container 13 into the spray head 132 again. The circulation pipeline is provided with a washing pump 133 for providing power for the water in the circulation pipeline. The circulation line is provided with a heater 134 for heating the water circulated from the spray head 132.

A drain pipe 135 is provided at the bottom of the inner tub 13, and a drain pump 136 is provided on the drain pipe 135 for draining the washing water in the inner tub 13.

Further, as shown in fig. 3, in another embodiment, there is provided a dishwasher control method including the steps of:

acquiring the temperature T of the steam generator 12 communicated with the inner container 13 of the dishwasher 10, and judging the relation between the temperature T and a preset allowable temperature range;

if the temperature T is greater than the maximum value Tmax of the allowable temperature range, increasing the flow of water into the steam generator 12;

if the temperature T is less than the minimum value Tmin of the permissible temperature range, the water flow into the steam generator 12 is reduced.

The above-mentioned solution provides a dishwasher control method, by obtaining the temperature T of the steam generator 12 and comparing the relationship between the temperature T and the allowable temperature range, when the temperature T of the steam generator 12 is greater than the maximum value Tmax of the allowable temperature range, it is proved that the temperature of the steam generator 12 is too high, which will cause the burning out of the steam generator 12 if the temperature T continues, thereby increasing the flow rate of water into the steam generator 12. When the temperature T of the steam generator 12 is less than the minimum value Tmin of the allowable temperature range, the steam generator 12 cannot rapidly heat the water therein to steam, and there will be a situation where the water boils and expands in the steam generator 12 and part of the water is sprayed out by the expansion pressure, thereby reducing the flow rate of the water entering the steam generator 12. Thereby ensuring that the steam generator 12 can form stable steam and reducing the fraction defective.

Specifically, in one embodiment, the temperature T of the steam generator 12 is obtained as a shell temperature of the steam generator 12.

Alternatively, the temperature of other locations of the steam generator 12 may be obtained, as long as it reflects the water level in the steam generator 12.

Further, in one embodiment, as shown in FIG. 3, if the temperature T is between a maximum value Tmax and a minimum value Tmin, then the amount of water in the steam generator 12 may prove suitable at that time, and the current flow of water into the steam generator 12 may be maintained. I.e. maintaining the current water intake per unit time of the steam generator 12.

Further, in one embodiment, the maximum value Tmax is 120 ℃ and the minimum value Tmin is 102 ℃.

When the obtained shell temperature of the steam generator 12 is greater than 120 ℃, the flow of water into the steam generator 12 is increased. When the sensed shell temperature of the steam generator 12 is below 102 ℃, the flow of water into the steam generator 12 is reduced.

Further, in one embodiment, the process of adjusting the amount of water flow into the steam generator 12 includes a fine tuning process and a coarse tuning process, wherein the amount of water flow during the fine tuning process is less than the amount of water flow during the coarse tuning process; when the temperature T fluctuation of the steam generator 12 in unit time is greater than a preset temperature fluctuation rate Delta H, adopting a coarse adjustment process; when the temperature T fluctuation of the steam generator 12 per unit time is less than a preset temperature fluctuation rate DeltaH, a fine adjustment process is adopted.

When the temperature T fluctuation of the steam generator 12 in the unit time is greater than the preset temperature fluctuation rate Δ H, it is proved that the temperature fluctuation of the steam generator 12 is large at this time, and the water amount in the steam generator 12 can be quickly adjusted, so that the temperature of the steam generator 12 is restored within the allowable temperature range, and a rough adjustment process is adopted. When the temperature T fluctuation of the steam generator 12 per unit time is less than the preset temperature fluctuation rate Δ H, the temperature of the steam generator 12 is maintained in a relatively stable state through fine adjustment.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a dish washer, its characterized in that, includes steam generator and inner bag, steam generator's water inlet is equipped with the inlet tube, the inlet tube be used for with the water source intercommunication, steam generator's steam outlet with the inner bag intercommunication, be equipped with flow control unit on the inlet tube, the last temperature detection spare that is equipped with of steam generator is used for detecting steam generator's temperature, flow control unit with temperature detection spare electric connection.

2. The dishwasher of claim 1, wherein the temperature sensing part is provided on a housing of the steam generator for sensing a temperature of the housing of the steam generator.

3. The dishwasher of claim 2, wherein the temperature sensing member is disposed inside a housing of the steam generator.

4. The dishwasher of claim 1, wherein the water inlet pipe is provided with a water pump, the water pump is positioned at the upstream of the flow control unit, and the water pump is electrically connected with the flow control unit and the temperature detection part.

5. The dishwasher according to any one of claims 1 to 4, wherein the flow control unit is a flow control valve for adjusting the flow rate of the water inlet pipe, the flow control valve comprises a valve body, a valve element gear, a motor and a motor gear, an inlet and an outlet of the valve body are respectively communicated with the water inlet pipe, the valve element is arranged in the valve body, the valve element gear is connected with the valve element and used for driving the valve element to rotate, a rotating shaft of the motor is connected with the motor gear and used for driving the motor gear to rotate, the motor gear is meshed with the valve element gear, and the motor is electrically connected with the temperature detection member.

6. The dishwasher of claim 5, further comprising a controller, wherein the controller is provided with a comparing module and an executing module which are electrically connected with each other, the comparing module is electrically connected with the temperature detecting member and is used for comparing the relation between the temperature value detected by the temperature detecting member and a preset allowable temperature range, and the executing module is electrically connected with the motor.

7. The dishwasher according to any one of claims 1 to 4, further comprising a controller, wherein the controller is provided with a comparison module and an execution module which are electrically connected with each other, the comparison module is electrically connected with the temperature detection member and is used for comparing the relationship between the temperature value detected by the temperature detection member and a preset allowable temperature range, and the execution module is electrically connected with the flow control unit.

8. A dishwasher according to claim 7, wherein the maximum value of the permissible temperature range is 120 ℃ and the minimum value of the permissible temperature range is 102 ℃.

9. The dishwasher according to any one of claims 1 to 4, further comprising a water storage device, wherein the water inlet pipe is communicated between the water storage device and the water inlet of the steam generator, a water inlet main pipeline is arranged at the water inlet of the water storage device, and a first switch valve is arranged on the water inlet main pipeline.

10. The dishwasher according to any one of claims 1 to 4, further comprising a water storage device, wherein the water inlet pipe is communicated between the water storage device and the water inlet of the steam generator, an auxiliary pipeline is arranged between the water storage device and the inner container, and a second switch valve is arranged on the auxiliary pipeline.