Control method of washing equipment and washing equipment

Abstract

The invention discloses a control method of washing equipment and the washing equipment. The washing equipment comprises a washing cavity used for containing washing water and further comprises a pressure adjusting module used for adjusting the air pressure in the washing cavity. The control method comprises the following steps: controlling the pressure regulating module to reduce the air pressure in the washing cavity for reducing the boiling point of washing water in the washing cavity; and the heating module is controlled to heat the washing water in the washing cavity to be boiled so as to perform low-pressure bubble washing on the load in the washing cavity. According to the washing equipment, the air pressure in the washing cavity is accurately controlled by arranging the pressure regulating module, and the boiling point of the washing water in the washing cavity is reduced to be below the temperature which can be borne by clothes by utilizing the principle that the boiling point of the liquid is reduced along with the reduction of the air pressure, so that the washing water can enter a boiling state at a relatively low temperature; and a large number of microbubbles are generated in washing water, so that stains on the clothes are subjected to high-temperature soaking and impact force of microbubble explosion at the same time, and the speed of dissolving the heavy stains into the washing water is increased.

Description

Technical Field

[0001] The present invention belongs to the field of washing equipment, and specifically, relates to a control method for a washing equipment and a washing equipment. Background Art

[0002] In the present invention, the "washing equipment" refers to the general name of a class of household appliances that can execute programs such as washing, dehydration, and drying, such as washing machines, washer-dryers, etc.

[0003] With the increasing improvement of people's living standards, washing machines have gradually become one of the essential household appliances in people's homes, and more and more consumers will pay attention to the washing effect. At present, the washing method of a drum washing machine is mostly to drive the clothes to rotate through the rotation of the drum and beat against the barrel wall when falling to wash the clothes. However, if the clothes are entangled, the stains at the entanglement will not be able to be beaten, resulting in the entanglement not being cleaned.

[0004] Moreover, the washing machine has a weak ability to clean clothes. It is difficult to clean heavy stains on clothes without heating during washing. It is also impossible to clean the local area of the clothes, and it is difficult to remove heavy stains in the local area of the clothes. In addition, after some stains adhere to the clothes, they will penetrate into the fabric fibers, and ordinary washing methods are difficult to wash off.

[0005] For this reason, the Chinese invention patent with the application number 201410046732.4 discloses a washing machine with a microbubble generating device that provides microbubbles and / or foam to a washing tub. When the microbubbles flow into the washing tub, the microbubbles break due to contacting the clothes and impact the clothes, thereby effectively removing the stains attached to the inside of the fabric fibers.

[0006] However, to enable the washing machine to perform microbubble washing, it is necessary to additionally configure an air supply device, a mixer, and a slit for generating microbubbles in the washing machine, which greatly increases the functional components of the washing machine, makes the structure of the washing machine more complex, and the cost more expensive.

[0007] The Chinese invention patent with the application number 200810212094.3 discloses a cleaning boiling device, including a middle frame, a barrel cover, an outer barrel, a water spraying cover, an inner barrel, a water spraying outer cover, and a water discharging device. The characteristics are that a barrel cover is arranged on the upper part of the middle frame, and a water discharging device is arranged at the bottom of the middle frame; an outer barrel, a water spraying cover, an inner barrel, and a water spraying outer cover are arranged inside the middle frame; an electric heating metal plate is embedded at the bottom of the barrel; a water spraying cover is arranged above the electric heating metal plate at the bottom of the barrel. The invention heats the water in the outer barrel to make the water in the outer barrel boil rapidly, and sprays the boiling water onto clothes, towels and other cotton products through the water spraying cover for rinsing to achieve the effect of high-temperature cleaning.

[0008] However, heating the water in the washing tub to boiling requires the water temperature to reach at least 100°C under standard atmospheric pressure. However, most clothing materials cannot withstand such high temperatures. For example, the maximum washing temperature that clothing made of materials such as cotton and polyester can withstand is 70°C. This results in washing equipment that uses the boiling method for washing clothes being unable to be widely applied to ordinary clothes.

[0009] In view of this, the present invention is specifically proposed. Summary of the Invention

[0010] The purpose of the present invention is to provide a control method for a washing device to achieve the purpose of reducing the boiling temperature of the washing water in the washing device and using a large number of microbubbles generated in the washing water during boiling to perform low-pressure bubble washing on the clothes in the washing device.

[0011] Another purpose of the present invention is to provide a washing device that adopts the above control method to achieve the purpose of using the bubbles generated by low-temperature boiling to replace the microbubbles generated by a bubble generation device, streamlining the structure of the washing device, and broadening the range of clothes that the washing device can handle.

[0012] To solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0013] A control method for a washing device, the washing device includes a washing chamber for containing washing water, and the washing device further includes a pressure regulating module for adjusting the air pressure in the washing chamber;

[0014] The control method includes: controlling the pressure regulating module to reduce the air pressure in the washing chamber to reduce the boiling point of the washing water in the washing chamber; controlling the heating module to heat the washing water in the washing chamber to boiling to perform low-pressure bubble washing on the load in the washing chamber.

[0015] Further, before controlling the pressure regulating module to reduce the air pressure in the washing chamber, determine the low-pressure bubble washing air pressure corresponding to the optimal washing temperature according to the optimal washing temperature of the load and / or detergent, and then control the pressure regulating module to reduce the air pressure in the washing chamber to the low-pressure bubble washing air pressure.

[0016] Further, the optimal washing temperature according to the load and / or detergent includes: obtaining the temperature suitable for washing the washing load and the temperature suitable for washing the detergent, and selecting the smaller temperature value as the optimal washing temperature.

[0017] Further, obtain the boiling point t of the washing water under standard atmospheric pressure 常压 , judge whether the optimal washing temperature is less than the boiling point t 常压 , if so, control the pressure regulating module to reduce the air pressure in the washing chamber; if not, control the heating module to heat the temperature of the washing water to the boiling point t 常压 .

[0018] Furthermore, the pressure regulating module includes an air pump communicated with the washing cavity; reducing the air pressure in the washing cavity includes: controlling the air pump to be turned on to reduce the air pressure in the washing cavity to the low-pressure bubble washing air pressure.

[0019] Furthermore, the washing device includes a heating module installed on the barrel body, and the control method includes: during the low-pressure bubble washing process, detecting the temperature of the washing water in real time, judging whether the temperature of the washing water is less than the optimal washing temperature, if so, controlling the heating module to operate at the rated power to heat the washing water; if not, reducing the operating power of the heating module.

[0020] Furthermore, after the low-pressure bubble washing is completed, judge the magnitude of the air pressure in the washing cavity and the standard atmospheric pressure. If the air pressure in the washing cavity is less than the standard atmospheric pressure, control the pressure regulating module to restore the air pressure in the washing cavity to the standard atmospheric pressure.

[0021] Furthermore, the washing device includes a storage module for storing the corresponding relationship between the optimal washing temperature and the low-pressure bubble washing air pressure;

[0022] Obtaining the low-pressure bubble washing air pressure corresponding to the optimal washing temperature includes: retrieving the corresponding relationship from the storage module and substituting the optimal washing temperature into the corresponding relationship to obtain the low-pressure bubble washing air pressure.

[0023] The present invention also provides a washing device adopting the above control method, including: a washing cavity for containing washing water; a heating module for heating the washing water in the washing cavity; a controller electrically connected to the heating module for controlling the heating module to heat the washing water, and further including a pressure regulating module electrically connected to the controller. The controller controls the pressure regulating module to reduce the air pressure in the washing cavity and then controls the heating module to heat the washing water in the washing cavity to boiling for performing low-pressure bubble washing on the load in the washing cavity.

[0024] Furthermore, it further includes a storage module electrically connected to the controller for storing the corresponding relationship between the optimal washing temperature and the low-pressure bubble washing air pressure; the controller determines the low-pressure bubble washing air pressure corresponding to the optimal washing temperature and then controls the pressure regulating module to reduce the air pressure in the washing cavity to the low-pressure bubble washing air pressure.

[0025] After adopting the above technical solutions, the present invention has the following beneficial effects compared with the prior art.

[0026] 1. The washing device precisely controls the air pressure in the washing chamber by setting a pressure regulating module. Utilizing the principle that the boiling point of a liquid decreases as the air pressure decreases, the boiling point of the washing water in the washing chamber is reduced to a temperature below what the clothes can withstand. As a result, the washing water can enter the boiling state at a lower temperature, and a large number of micro-bubbles are generated in the washing water. The stains on the clothes are simultaneously subjected to the impact of high-temperature soaking and micro-bubble explosion, enabling the heavy stains to quickly dissolve into the washing water, greatly improving the efficiency of the washing device in cleaning heavy stains.

[0027] 2. Taking the optimal washing temperature of the clothes to be processed or the detergent as the boundary condition for adjusting the air pressure in the washing chamber, the washing device can always wash the clothes efficiently, avoid damaging the clothes during the washing process, and greatly expand the range of clothes suitable for low-pressure bubble washing.

[0028] 3. Through the coordinated operation of the pressure regulating module and the heating module, the washing device can reduce the boiling temperature of the washing water. Using the large number of micro-bubbles generated in the washing water during boiling to perform low-pressure bubble washing on the clothes in the washing device, it is possible to replace the micro-bubbles generated by the bubble generating device with the bubbles generated by low-temperature boiling, streamlining the structure in the washing device and expanding the range of clothes that the washing device can process.

[0029] The following further describes in detail the specific embodiments of the present invention with reference to the accompanying drawings. Description of the Drawings

[0030] The accompanying drawings, as part of the present invention, are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention, but do not constitute an improper limitation to the present invention. Obviously, the accompanying drawings in the following description are only some embodiments. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. In the drawings:

[0031] Figure 1 is a flowchart of a control method for a washing device of the present invention;

[0032] Figure 2 is a flowchart of a control method for another washing device of the present invention;

[0033] Figure 3 is a flowchart of a control method for another washing device of the present invention;

[0034] Figure 4 is a flowchart of a control method for another washing device of the present invention;

[0035] Figure 5 is a flowchart of a control method for yet another washing device of the present invention.

[0036] It should be noted that these drawings and textual descriptions are not intended to limit the scope of the concept of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by reference to specific embodiments. Detailed Embodiments

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0038] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "left", "right", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0039] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In the present invention, the "washing device" refers to the general term for a class of household appliances that can perform procedures such as washing, dewatering, and drying, such as washing machines, washer-dryers, etc.

[0041] Specifically, the washing device includes a tub and a door body that is openably and closably provided at the open end of the tub. A washing cavity for accommodating washing water is provided in the middle of the tub. In addition, an air pipe, a water inlet pipe, and a drain pipe are also provided on the tub. The air pipe, the water inlet pipe, and the drain pipe are all communicated with the washing cavity.

[0042] Solenoid valves are respectively connected in series in the water inlet pipe and the drain pipe. And the other end of the water inlet pipe is communicated with the tap water pipe. The solenoid valve can be controlled to open, and tap water can be conveyed into the washing cavity of the tub through the water inlet pipe, and the washing water in the washing cavity can be drained through the drain pipe.

[0043] Closing the door body to seal the open end of the tub and simultaneously closing the solenoid valves of the water inlet pipe and the drain pipe can make the washing cavity airtight.

[0044] Particularly, the washing device further includes a pressure regulating module for regulating the air pressure in the washing cavity. The pressure regulating module is connected to the air pipe and can convey air into the washing cavity and also extract the air in the washing cavity.

[0045] Under normal circumstances, when the temperature of the washing water reaches 100 °C, boiling water phenomenon will occur. When the washing water boils, a large number of microbubbles will be generated. The microbubbles will float in the washing water and burst during the upward movement, generating an explosion shock. If there are clothes in the washing water, it will have an all-round and non-blind impact on the clothes.

[0046] Due to the huge number of microbubbles, a large number of impacts will be generated in a short time, which can quickly loosen the stubborn stains adhering to the clothing fibers and improve the ability of the washing equipment to remove solid stains. However, when some clothes are exposed to a relatively high temperature, problems such as shrinkage and color fading may occur.

[0047] Therefore, in the present invention, a control method capable of reducing the boiling point of the washing water is provided to improve the washing effect of the washing equipment.

[0048] Among them, the control method mainly includes: controlling the pressure regulating module to extract the air in the washing cavity to reduce the air pressure in the washing cavity, thereby reducing the boiling point of the washing water in the washing cavity.

[0049] Then, control the heating module to heat the barrel to heat the washing water in the washing cavity to boiling, and perform low-pressure bubble washing on the load. And "low-pressure bubble washing" refers to a method of controlling the washing water to enter a boiling and vaporizing state below 100 degrees Celsius, generating a large number of microbubbles, and washing the clothes by using the impact of the bubbles.

[0050] Specifically, as Figure 1 shown, the control method of the washing equipment includes the following steps:

[0051] S01 Turn on the washing equipment;

[0052] S02 Control to close the washing cavity;

[0053] S03 Control the pressure regulating module to reduce the air pressure in the washing cavity;

[0054] S04 Control the heating module to heat the washing water in the washing cavity to boiling;

[0055] S05 Start to execute the washing program, and keep the air pressure in the washing cavity stable and the washing water boiling during the washing process, and perform low-pressure bubble washing on the clothes;

[0056] S06 After the washing program is completed, enter the rinsing program.

[0057] In this embodiment, the washing device precisely controls the air pressure in the washing cavity by setting a pressure regulating module. Utilizing the principle that the boiling point of a liquid decreases as the air pressure decreases, the boiling point of the washing water in the washing cavity is reduced to a temperature below what the clothes can withstand. Thus, the washing water can enter the boiling state at a lower temperature, and a large number of microbubbles are generated in the washing water. The stains on the clothes are simultaneously subjected to the impact of high-temperature soaking and microbubble explosion, enabling the heavy stains to quickly dissolve into the washing water, greatly improving the efficiency of the washing device in cleaning heavy stains.

[0058] In another embodiment of the present invention, a control method capable of broadening the application range of the washing device is introduced.

[0059] Before controlling the pressure regulating module to reduce the air pressure in the washing cavity, first obtain the optimal washing temperature of the load or the optimal washing temperature of the detergent. Then, determine the low-pressure bubble washing air pressure corresponding to the optimal washing temperature according to the optimal washing temperature.

[0060] After that, control the pressure regulating module to reduce the air pressure in the washing cavity to the low-pressure bubble washing air pressure.

[0061] Specifically, as Figure 2 shown, the control method of the washing device includes the following steps:

[0062] S01 Turn on the washing device;

[0063] S02 Obtain the optimal washing temperature;

[0064] S03 Determine the low-pressure bubble washing air pressure corresponding to the optimal washing temperature according to the optimal washing temperature;

[0065] S04 Control to close the washing cavity;

[0066] S05 Control the pressure regulating module to reduce the air pressure in the washing cavity to the low-pressure bubble washing air pressure;

[0067] S06 Control the heating module to heat the washing water in the washing cavity to boiling;

[0068] S07 Start to execute the washing program. During the washing process, keep the air pressure in the washing cavity stable and the washing water boiling, and perform low-pressure bubble washing on the clothes;

[0069] S08 After the washing program is completed, enter the rinsing program.

[0070] Furthermore, according to the optimal washing temperature of the load and / or the detergent includes: obtaining the temperature suitable for washing the load and directly using this temperature as the optimal washing temperature; or, obtaining the temperature suitable for washing the detergent and directly using this temperature as the optimal washing temperature; or, obtaining the temperature suitable for washing the load, obtaining the temperature suitable for washing the detergent, and then selecting the smaller temperature value as the optimal washing temperature.

[0071] In this embodiment, the optimal washing temperature of the laundry or detergent to be processed is used as the boundary condition for adjusting the air pressure in the washing chamber, so that the washing equipment can always wash the laundry efficiently, avoid damaging the laundry during the washing process, and greatly expand the range of clothes suitable for low-pressure bubble washing.

[0072] In another embodiment of the present invention, a control method for improving the operating speed of a washing equipment is introduced.

[0073] Obtain the boiling point t of the washing water under standard atmospheric pressure 常压 , and determine whether the optimal washing temperature is less than the boiling point t 常压 . If so, control the pressure regulating module to reduce the air pressure in the washing chamber; if not, control the heating module to heat the washing water to the boiling point t 常压 .

[0074] Specifically, as Figure 3 shown, the control method of the washing equipment includes the following steps:

[0075] S01 Turn on the washing equipment;

[0076] S02 Obtain the boiling point t of the washing water under standard atmospheric pressure 常压 , and obtain the optimal washing temperature;

[0077] S03 Determine whether the optimal washing temperature is less than the boiling point t 常压 ;

[0078] S041 If so, control to enter step S05;

[0079] S042 If not, control to enter step S08;

[0080] S05 Determine the low-pressure bubble washing air pressure corresponding to the optimal washing temperature according to the optimal washing temperature;

[0081] S06 Control to close the washing chamber;

[0082] S07 Control the pressure regulating module to reduce the air pressure in the washing chamber to the low-pressure bubble washing air pressure;

[0083] S08 Control the heating module to heat the washing water in the washing chamber to boiling;

[0084] S09 Start to execute the washing program, keep the air pressure in the washing chamber stable and the washing water boiling during the washing process, and perform low-pressure bubble washing on the laundry;

[0085] S10 After the washing program is completed, enter the rinsing program.

[0086] In this embodiment, a judgment step is added to the control method, enabling the washing device to directly heat the washing water, thereby quickly processing clothes that can withstand temperatures above 100 degrees Celsius, eliminating the process of adjusting the air pressure in the washing cavity, and improving the speed of washing clothes.

[0087] In another embodiment of the present invention, a control method for controlling the temperature of washing water during the washing process is introduced.

[0088] Among them, the pressure regulating module includes an air pump, which is connected to the washing cavity through an air pipe. The specific steps for reducing the air pressure in the washing cavity are: controlling the air pump to be turned on and reducing the air pressure in the washing cavity to the low-pressure bubble washing air pressure.

[0089] Furthermore, the washing device further includes a heating module installed on the outer periphery of the side wall of the barrel. The control method includes: during the low-pressure bubble washing process, the temperature of the washing water is detected in real time.

[0090] Judge whether the temperature of the washing water is less than the optimal washing temperature. If so, control the heating module to operate at the rated power to heat the washing water; if not, reduce the operating power of the heating module.

[0091] Specifically, as Figure 4 shown, the control method of the washing device includes the following steps:

[0092] S01 Turn on the washing device;

[0093] S02 Obtain the boiling point t of the washing water under standard atmospheric pressure 常压 , and obtain the optimal washing temperature;

[0094] S03 Judge whether the optimal washing temperature is less than the boiling point t 常压 ;

[0095] S041 If so, control to enter step S05;

[0096] S042 If not, control to enter step S08;

[0097] S05 Determine the low-pressure bubble washing air pressure corresponding to the optimal washing temperature according to the optimal washing temperature;

[0098] S06 Control to close the washing cavity;

[0099] S07 Control the pressure regulating module to reduce the air pressure in the washing cavity to the low-pressure bubble washing air pressure;

[0100] S08 Control the heating module to heat the washing water in the washing cavity to boiling;

[0101] S09 starts to execute the washing program to perform low-pressure bubble washing on the clothes, maintaining the air pressure in the washing cavity stable during the washing process and detecting the temperature of the washing water in real time;

[0102] S10 determines whether the temperature of the washing water is less than the optimal washing temperature;

[0103] S111 If so, control enters step S121;

[0104] S112 If not, control enters step S122;

[0105] S121 controls the heating module to operate at the rated power to heat the washing water;

[0106] S122 controls to reduce the operating power of the heating module;

[0107] After the washing program is completed, enter the rinsing program.

[0108] In this embodiment, a rated power operation mode for quickly raising the water temperature and a low-power operation mode for heat preservation are set for the heating module, reducing the power consumption of the washing equipment and improving the resource utilization rate.

[0109] In another embodiment of the present invention, a control method for improving the safety of the washing equipment is introduced.

[0110] After the low-pressure bubble washing of the clothes is completed, judge the magnitude of the air pressure in the washing cavity and the standard atmospheric pressure. If the air pressure in the washing cavity is less than the standard atmospheric pressure, control the pressure regulating module to restore the air pressure in the washing cavity to the standard atmospheric pressure.

[0111] Specifically, as Figure 5 shown, the control method of the washing equipment includes the following steps:

[0112] S01 Turn on the washing equipment;

[0113] S02 Obtain the boiling point t of the washing water under the standard atmospheric pressure 常压 , and obtain the optimal washing temperature;

[0114] S03 Determine whether the optimal washing temperature is less than the boiling point t 常压 ;

[0115] S041 If so, control enters step S05;

[0116] S042 If not, control enters step S08;

[0117] S05 Determine the low-pressure bubble washing air pressure corresponding to the optimal washing temperature according to the optimal washing temperature;

[0118] S06 Control to close the washing cavity;

[0119] S07 controls the pressure regulating module to reduce the air pressure in the washing cavity to the air pressure for low-pressure bubble washing;

[0120] S08 controls the heating module to heat the washing water in the washing cavity to boiling;

[0121] S09 starts to execute the washing program to perform low-pressure bubble washing on the clothes, keeps the air pressure in the washing cavity stable during the washing process, and detects the temperature of the washing water in real time;

[0122] S10 determines whether the temperature of the washing water is less than the optimal washing temperature;

[0123] S111 If so, controls to enter step S121;

[0124] S112 If not, controls to enter step S122;

[0125] S121 controls the heating module to operate at the rated power to heat the washing water;

[0126] S122 controls to reduce the operating power of the heating module;

[0127] S13 After completing the washing program, determines the magnitude of the air pressure in the washing cavity and the standard atmospheric pressure;

[0128] S141 If the air pressure in the washing cavity is less than the standard atmospheric pressure, controls to enter step S15;

[0129] S142 If the air pressure in the washing cavity is not less than the standard atmospheric pressure, controls to enter step S16;

[0130] S15 controls the pressure regulating module to restore the air pressure in the washing cavity to the standard atmospheric pressure;

[0131] S16 enters the rinsing program.

[0132] Furthermore, the washing device further includes a storage module for storing the correspondence between the optimal washing temperature and the air pressure for low-pressure bubble washing.

[0133] Specifically, obtaining the air pressure for low-pressure bubble washing corresponding to the optimal washing temperature includes: retrieving the correspondence from the storage module and substituting the optimal washing temperature into the correspondence to obtain the air pressure for low-pressure bubble washing.

[0134] In this embodiment, by controlling the pressure regulating module to restore the air pressure in the washing cavity to the standard atmospheric pressure after washing, it not only ensures that the door of the closed washing cavity can be easily opened after washing, but also avoids damage to the water inlet pipe due to excessive air pressure difference inside and outside the washing cavity during the subsequent rinsing program.

[0135] The present invention also provides a washing device adopting the above control method. The washing device includes a washing cavity for containing washing water and clothes. Specifically, the washing device includes a barrel body and a door body which is disposed at the open end of the barrel body in an openable and closable manner. A washing cavity for containing washing water is provided in the middle of the barrel body.

[0136] In addition, the washing device includes a heating module which is disposed on the outer periphery of the side wall of the barrel body and is used for heating the washing water in the washing cavity.

[0137] Particularly, the washing device further includes a controller which is electrically connected to the heating module and is used for controlling the heating module to heat the washing water.

[0138] An air pipe, a water inlet pipe and a drain pipe are further provided on the barrel body. The air pipe, the water inlet pipe and the drain pipe are all communicated with the washing cavity. Solenoid valves are respectively connected in series in the water inlet pipe and the drain pipe. And the other end of the water inlet pipe is communicated with a water supply pipe. The solenoid valves can be controlled to be opened, and tap water can be conveyed into the washing cavity of the barrel body through the water inlet pipe, and the washing water in the washing cavity can be drained away through the drain pipe.

[0139] Closing the door body to seal the open end of the barrel body and simultaneously closing the solenoid valves of the water inlet pipe and the drain pipe can make the washing cavity airtight.

[0140] Particularly, the washing device further includes a pressure regulating module which is electrically connected to the controller and is used for regulating the air pressure in the washing cavity. The pressure regulating module is connected to the air pipe and can convey air into the washing cavity and also can extract the air in the washing cavity.

[0141] In another embodiment of the present invention, the washing device further includes a storage module which is electrically connected to the controller and is used for storing the corresponding relationship between the optimal washing temperature and the air pressure of the low-pressure bubble wash.

[0142] In addition, the corresponding relationship between the boiling point of the washing water and the air pressure in the washing cavity is: the higher the air pressure, the higher the boiling point; the lower the air pressure, the lower the boiling point.

[0143] Under the standard atmospheric pressure, the boiling point of the washing water is 99.6 °C. Under 10% of the standard atmospheric pressure, the boiling point of the washing water is about 80 °C. Under 7% of the standard atmospheric pressure, the boiling point of the washing water is lower than 70 °C. And these data are stored in the storage module and are used as reference data for the pressure regulating module when adjusting the air pressure in the washing cavity.

[0144] For example, if the maximum water temperature that a woolen sweater can withstand is 70 °C, then the boiling point of the washing water in the washing cavity can be controlled at 65 °C. At this time, the corresponding air pressure in the washing cavity is 6% of the standard atmospheric pressure. It is necessary to control the pressure regulating module to reduce the air pressure in the washing cavity to 6% of the standard atmospheric pressure.

[0145] Heat the washing water to the boiling state under this air pressure and perform low-pressure bubble washing on the woolen sweater, which can not only sterilize and remove scale well, but also avoid damage to the materials.

[0146] In this embodiment, through the coordinated operation of the voltage regulating module and the heating module, the washing equipment can reduce the boiling temperature of the washing water, and use a large number of microbubbles generated in the washing water during boiling to perform low-pressure bubble washing on the clothes in the washing equipment. Therefore, the bubbles generated by low-temperature boiling can replace the microbubbles generated by the bubble generating device, streamlining the structure in the washing equipment and broadening the range of clothes that the washing equipment can handle.

[0147] The above are only the preferred embodiments of the present invention, and there is no limitation to the present invention in any form. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the technical content prompted above within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A control method for a washing device, the washing device including a washing cavity for containing washing water, characterized in that, The washing device further includes a pressure regulating module for regulating the air pressure in the washing chamber; the control method includes: Controlling the pressure regulating module to reduce the air pressure in the washing chamber to lower the boiling point of the washing water in the washing chamber; Controlling the heating module to heat the washing water in the washing chamber to boiling for performing low-pressure bubble washing on the load in the washing chamber.

2. The control method for a washing device according to claim 1, characterized in that, Before controlling the pressure regulating module to reduce the air pressure in the washing chamber, determine the low-pressure bubble washing air pressure corresponding to the optimal washing temperature according to the optimal washing temperature of the load and / or detergent, and then control the pressure regulating module to reduce the air pressure in the washing chamber to the low-pressure bubble washing air pressure.

3. The control method for a washing device according to claim 2, characterized in that, The determining the optimal washing temperature according to the load and / or detergent includes: obtaining the temperature suitable for washing the washing load and the temperature suitable for washing the detergent, and selecting the smaller temperature value as the optimal washing temperature.

4. The control method for a washing device according to claim 2 or 3, characterized in that, Obtain the boiling point t of the washing water under standard atmospheric pressure 常压 , and determine whether the optimal washing temperature is less than the boiling point t 常压 . If so, control the pressure regulating module to reduce the air pressure in the washing chamber; if not, control the heating module to heat the temperature of the washing water to the boiling point t 常压 .

5. The control method for a washing device according to claim 4, characterized in that, The pressure regulating module includes an air pump communicated with the washing chamber; Reducing the air pressure in the washing chamber includes: controlling the air pump to be turned on to reduce the air pressure in the washing chamber to the low-pressure bubble washing air pressure.

6. The control method for a washing device according to claim 5, characterized in that, The washing device includes a heating module installed on the barrel body, and the control method includes: during the low-pressure bubble washing process, detecting the temperature of the washing water in real time, determining whether the temperature of the washing water is less than the optimal washing temperature, if so, controlling the heating module to operate at the rated power to heat the washing water; if not, reducing the operating power of the heating module.

7. The control method for a washing device according to any one of claims 1-5, characterized in that, After the low-pressure bubble washing is completed, determine the magnitude of the air pressure in the washing chamber and the standard atmospheric pressure. If the air pressure in the washing chamber is less than the standard atmospheric pressure, control the pressure regulating module to restore the air pressure in the washing chamber to the standard atmospheric pressure.

8. The control method for a washing device according to claim 2, characterized in that, The washing device includes a storage module for storing the corresponding relationship between the optimal washing temperature and the low-pressure bubble washing air pressure; Obtaining the low-pressure bubble washing air pressure corresponding to the optimal washing temperature includes: retrieving the corresponding relationship from the storage module and substituting the optimal washing temperature into the corresponding relationship to obtain the low-pressure bubble washing air pressure.

9. A washing device, comprising: The washing chamber for containing the washing water; The heating module for heating the washing water in the washing chamber; The controller is electrically connected to the heating module for controlling the heating module to heat the washing water. It is characterized in that it further includes a pressure regulating module electrically connected to the controller. After the controller controls the pressure regulating module to reduce the air pressure in the washing chamber, it controls the heating module to heat the washing water in the washing chamber to boiling for performing low-pressure bubble washing on the load in the washing chamber.

10. The washing device according to claim 9, characterized in that, It further includes a storage module electrically connected to the controller for storing the corresponding relationship between the optimal washing temperature and the low-pressure bubble washing air pressure; the controller determines the low-pressure bubble washing air pressure corresponding to the optimal washing temperature, and then controls the pressure regulating module to reduce the air pressure in the washing chamber to the low-pressure bubble washing air pressure.

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