Laundry treating apparatus and control method thereof

Abstract

The present application relates to the technical field of clothes processing equipment, and particularly provides clothes processing equipment and a control method thereof, aiming at solving the problem of excessive consumption of dry ice in the existing dry ice washing machine. To this end, the clothes processing equipment of the present application comprises a clothes processing cylinder, a dry ice generating device and a gas recycling device in communication, the dry ice generating device is arranged to be capable of sending dry ice particles into the clothes processing cylinder, and the gas recycling device is arranged to be capable of recycling the gas in the clothes processing cylinder; the clothes processing cylinder is provided with a heat preservation layer. The present application can make the clothes processing cylinder quickly enter a low temperature state by arranging a heat preservation layer in the clothes processing cylinder, avoid the instantaneous sublimation of dry ice particles entering the clothes processing cylinder, make the dry ice particles have sufficient time to contact the clothes, reduce and avoid the sublimation of dry ice particles, and thus effectively reduce the use amount of dry ice and save costs.

Description

Technical Field

[0001] This invention relates to the field of clothing processing equipment technology, and specifically provides a clothing processing device and its control method. Background Technology

[0002] In daily life, traditional washing machines have long dominated the household laundry market. They primarily rely on water, chemical detergents, and high temperatures to remove dirt from clothes. However, while widely used, traditional washing machines have several significant drawbacks. First, they consume a huge amount of water. Each wash requires a large amount of water to soak and rinse clothes. Second, the use of chemical detergents leads to chemical residue problems. These residues can damage the fiber structure of clothing, causing it to harden, fade, and deform, shortening its lifespan. Furthermore, the high-temperature heating process consumes a lot of energy and can also damage some clothes.

[0003] To reduce the over-reliance on water in traditional washing machines and mitigate the negative impacts of chemical detergents and high temperatures, new technologies are constantly being developed, leading to the introduction of new washing equipment such as dry cleaning washing machines, air-washing washing machines, and dry ice washing machines. Among these, dry ice washing machines enable a waterless and detergent-free washing process, effectively avoiding water waste and chemical residue problems, and exhibiting significant water-saving and environmentally friendly features. However, dry ice washing machines are not without their drawbacks. Dry ice itself is highly volatile, requiring a continuous supply to achieve the desired cleaning effect during the garment washing process. This results in excessive dry ice consumption, increasing washing costs.

[0004] In conclusion, existing dry ice washing machines consume too much dry ice.

[0005] Accordingly, a new technical solution is needed in this field to solve the above problems. Summary of the Invention

[0006] The present invention aims to solve the above-mentioned technical problem, namely, to solve the problem of excessive dry ice consumption in existing dry ice washing machines.

[0007] In a first aspect, the present invention provides a garment processing device, the garment processing device comprising a garment processing cylinder, a dry ice generating device, and a gas recovery device connected in communication, the dry ice generating device being configured to deliver dry ice particles into the garment processing cylinder, the gas recovery device being configured to recover gas within the garment processing cylinder; the garment processing cylinder is provided with an insulation layer.

[0008] In the preferred embodiment of the above-mentioned clothing processing equipment, the clothing processing cylinder includes an outer cylinder and an inner cylinder fitted inside the outer cylinder, the heat insulation layer is disposed on the inner cylinder, the dry ice generating device is configured to send dry ice particles into the inner cylinder, and the gas recovery device is connected to the outer cylinder.

[0009] In the preferred embodiment of the above-mentioned clothing processing equipment, the clothing processing equipment further includes a first door and a second door; the first door is configured to close and open the outer cylinder, the second door is configured to close and open the inner cylinder, and the inner cylinder is provided with a first outlet to connect the inner cylinder and the outer cylinder, so that the gas in the inner cylinder can be recovered by the gas recovery device.

[0010] In the preferred embodiment of the above-mentioned clothing processing equipment, a centrifugal valve is provided at the first outlet.

[0011] In the preferred embodiment of the above-mentioned clothing processing equipment, a pressure relief valve is also provided on the inner cylinder.

[0012] In the preferred embodiment of the above-mentioned clothing processing equipment, the outer cylinder is provided with a central hole, a rotatable rotating shaft is provided in the central hole, the rotating shaft is connected to the inner cylinder, a central pipe is provided inside the rotating shaft, the central pipe is connected to the inner cylinder, and the dry ice generating device is connected to the central pipe.

[0013] In the preferred embodiment of the above-mentioned clothing processing equipment, the inner cylinder is provided with a receiving chamber, the receiving chamber is connected to the central pipeline, and the receiving chamber is provided with a Venturi nozzle, which can spray dry ice particles in the receiving chamber into the inner cylinder.

[0014] In the preferred embodiment of the above-mentioned garment processing equipment, the garment processing equipment further includes an enzyme preparation storage device, and the Venturi nozzle has a constriction section, a throat and a diffusion section connected in sequence, and a suction port is provided at the throat, and the suction port is connected to the enzyme preparation storage device.

[0015] In the preferred embodiment of the above-mentioned clothing processing equipment, the gas recovery device and the dry ice generating device are connected, and a filter device is provided between the gas recovery device and the dry ice generating device, the filter device being used to filter particles in the gas.

[0016] In the preferred embodiment of the above-mentioned clothing processing equipment, the clothing processing equipment further includes a liquid nitrogen storage device, a first condensing device, and a gas-liquid separator. The liquid nitrogen storage device is connected to the clothing processing cylinder, and the first condensing device and the gas-liquid separator are sequentially arranged between the filtration device and the dry ice generating device.

[0017] In the preferred embodiment of the above-mentioned garment processing equipment, the garment processing equipment further includes an ultrasonic generator, which is disposed at the bottom of the garment processing drum.

[0018] In a second aspect, the present invention also provides a control method for a garment processing device, the garment processing device comprising a garment processing cylinder, a dry ice generating device, and a gas recovery device connected in series, the dry ice generating device being configured to deliver dry ice particles into the garment processing cylinder, the gas recovery device being configured to recover gas within the garment processing cylinder, and the garment processing cylinder being provided with an insulation layer; the control method comprising: upon receiving a garment processing command, controlling the garment processing cylinder to pre-cool to a preset temperature; and controlling the dry ice generating device to generate dry ice particles and deliver them into the garment processing cylinder.

[0019] In a preferred embodiment of the above control method, the weight of the clothing is obtained, and the amount of dry ice particles to be sprayed is determined based on the weight of the clothing; or, an image of the clothing is obtained, the area of ​​the stain is determined based on the image of the clothing, and the amount of dry ice particles to be sprayed is determined based on the area of ​​the stain; or, the weight of the clothing is obtained; an image of the clothing is obtained, the area of ​​the stain is determined based on the image of the clothing, and the amount of dry ice particles to be sprayed is determined based on the weight of the clothing and the area of ​​the stain.

[0020] In a preferred embodiment of the above control method, the garment processing cylinder includes an outer cylinder and an inner cylinder fitted inside the outer cylinder. An insulation layer is disposed on the inner cylinder. The dry ice generating device is configured to deliver dry ice particles into the inner cylinder. The gas recovery device is connected to the outer cylinder. The garment processing cylinder is provided with an insulation layer. The garment processing equipment also includes a first door and a second door. The first door is configured to close and open the outer cylinder, and the second door is configured to close and open the inner cylinder. The inner cylinder has a first outlet to connect the inner cylinder and the outer cylinder, allowing the gas inside the inner cylinder to be recovered by the gas recovery device. A centrifugal valve is provided at the first outlet. The control method includes: upon receiving a garment processing command, controlling the inner cylinder to pre-cool to a preset temperature; controlling the dry ice generating device to generate a first preset amount of dry ice particles and deliver them into the inner cylinder; controlling the inner cylinder to rotate to a preset speed; and controlling the centrifugal valve to open after the inner cylinder has rotated to the preset speed.

[0021] With the above technical solution adopted, the garment processing equipment of the present invention includes a garment processing cylinder, a dry ice generating device, and a gas recovery device connected in series. The dry ice generating device is configured to deliver dry ice particles into the garment processing cylinder, and the gas recovery device is configured to recover the gas inside the garment processing cylinder. The garment processing cylinder is provided with an insulation layer. By providing an insulation layer in the garment processing cylinder, the present invention enables the garment processing cylinder to quickly enter a low-temperature state, preventing the dry ice particles from instantly sublimating upon entering the garment processing cylinder. This allows the dry ice particles sufficient time to contact the garment, reducing and preventing the sublimation of the dry ice particles, thereby effectively reducing the amount of dry ice used and saving costs.

[0022] Furthermore, the present invention also provides an insulation layer on the inner cylinder, into which dry ice particles are fed. The inner cylinder can rotate, which can accelerate the contact between the dry ice particles and the clothing, so that the dry ice particles can contact the clothing evenly.

[0023] Furthermore, the present invention, through the arrangement of the first and second doors, enables the internal space of the inner cylinder to be cooled better, achieving a superior heat preservation effect and further reducing the instantaneous sublimation of dry ice particles.

[0024] Furthermore, the present invention can prevent excessive pressure inside the inner cylinder by setting a pressure relief valve.

[0025] Furthermore, the present invention, through the setting of Venturi nozzles and enzyme preparation storage device, can coat the surface of dry ice particles with a layer of active enzymes during spraying, and release enzyme molecules when the dry ice particles sublimate, decomposing protein stains at low temperature.

[0026] Furthermore, the present invention also enhances the contact efficiency between dry ice particles and clothing by incorporating an ultrasonic generator and utilizing high-frequency vibrations of sound waves.

[0027] Furthermore, the present invention also incorporates a liquid nitrogen storage device to inject liquid nitrogen into the inner drum or clothing treatment drum, which enables rapid pre-cooling. Additionally, a first condensing device is used to condense carbon dioxide into liquid, and a gas-liquid separator can separate liquid carbon dioxide and nitrogen.

[0028] Furthermore, the present invention also uses a control method to intelligently control the clothing processing equipment, reduce dry ice sublimation, and increase the contact rate between clothing and dry ice particles.

[0029] Solution 1. A garment processing device, characterized in that the garment processing device includes a garment processing cylinder, a dry ice generating device, and a gas recovery device connected in series.

[0030] The dry ice generating device is configured to deliver dry ice particles into the clothing processing drum, and the gas recovery device is configured to recover the gas inside the clothing processing drum.

[0031] The garment processing drum is equipped with an insulation layer.

[0032] Option 2. The clothing processing equipment according to Option 1, characterized in that the clothing processing cylinder includes an outer cylinder and an inner cylinder fitted inside the outer cylinder, the heat insulation layer is disposed on the inner cylinder, the dry ice generating device is configured to send dry ice particles into the inner cylinder, and the gas recovery device is connected to the outer cylinder.

[0033] Solution 3. The garment processing device according to Solution 2, characterized in that the garment processing device further includes a first door and a second door;

[0034] The first door is configured to close and open the outer cylinder, and the second door is configured to close and open the inner cylinder. The inner cylinder is provided with a first outlet to connect the inner cylinder and the outer cylinder, so that the gas in the inner cylinder can be recovered by the gas recovery device.

[0035] Option 4. The garment processing equipment according to Option 3, characterized in that a centrifugal valve is provided at the first outlet.

[0036] Option 5. The clothing processing equipment according to Option 4, characterized in that a pressure relief valve is further provided on the inner cylinder.

[0037] Option 6. The garment processing equipment according to Option 2, characterized in that the outer cylinder is provided with a central hole, a rotatable rotating shaft is provided in the central hole, the rotating shaft is connected to the inner cylinder, a central pipeline is provided inside the rotating shaft, the central pipeline is connected to the inner cylinder, and the dry ice generating device is connected to the central pipeline.

[0038] Solution 7. The clothing processing equipment according to Solution 6, characterized in that a receiving chamber is provided inside the inner cylinder, the receiving chamber is connected to the central pipeline, and a Venturi nozzle is provided on the receiving chamber, the Venturi nozzle being able to spray dry ice particles in the receiving chamber into the inner cylinder.

[0039] Solution 8. The garment processing equipment according to Solution 7, characterized in that the garment processing equipment further includes an enzyme preparation storage device.

[0040] The Venturi nozzle has a constriction section, a throat section, and a diffuser section connected in sequence. A suction port is provided at the throat section and is connected to the enzyme preparation storage device.

[0041] Option 9. The clothing processing equipment according to any one of Options 1 to 8, characterized in that the gas recovery device and the dry ice generating device are connected, and a filter device is provided between the gas recovery device and the dry ice generating device, the filter device being used to filter particles in the gas.

[0042] Option 10. The clothing processing equipment according to Option 9, characterized in that the clothing processing equipment further includes a liquid nitrogen storage device, a first condensing device and a gas-liquid separator, the liquid nitrogen storage device is connected to the clothing processing cylinder, and the first condensing device and the gas-liquid separator are sequentially arranged between the filtration device and the dry ice generating device.

[0043] Option 11. The garment processing device according to any one of Options 1 to 8, characterized in that the garment processing device further includes an ultrasonic generator, the ultrasonic generator being disposed at the bottom of the garment processing drum.

[0044] Solution 12. A control method for a garment processing device, characterized in that the garment processing device includes a garment processing cylinder, a dry ice generating device, and a gas recovery device connected in series, wherein the dry ice generating device is configured to deliver dry ice particles into the garment processing cylinder, the gas recovery device is configured to recover the gas in the garment processing cylinder, and the garment processing cylinder is provided with a heat insulation layer.

[0045] The control method includes:

[0046] Upon receiving a clothing processing instruction, the clothing processing drum is pre-cooled to a preset temperature.

[0047] The dry ice generating device is controlled to generate dry ice particles which are then fed into the clothing processing cylinder.

[0048] Solution 13. The control method according to Solution 12, characterized in that the weight of the clothing is obtained, and the amount of dry ice particles to be sprayed is determined based on the weight of the clothing;

[0049] Alternatively, acquire an image of the clothing, determine the stain area based on the clothing image, and determine the amount of dry ice particles to be sprayed based on the stain area;

[0050] Alternatively, obtain the weight of the clothing; obtain an image of the clothing, determine the stain area based on the clothing image, and determine the dry ice particle spraying amount based on the clothing weight and stain area.

[0051] Solution 14. The control method according to Solution 12, characterized in that the clothing processing cylinder includes an outer cylinder and an inner cylinder fitted inside the outer cylinder, the heat insulation layer is disposed on the inner cylinder, the dry ice generating device is configured to deliver dry ice particles into the inner cylinder, and the gas recovery device is connected to the outer cylinder; the clothing processing cylinder is provided with a heat insulation layer; the clothing processing equipment further includes a first door and a second door; the first door is configured to close and open the outer cylinder, the second door is configured to close and open the inner cylinder, the inner cylinder is provided with a first outlet to connect the inner cylinder and the outer cylinder, so that the gas in the inner cylinder can be recovered by the gas recovery device, and a centrifugal valve is provided at the first outlet;

[0052] The control method includes:

[0053] Upon receiving a clothing handling instruction, the inner drum is pre-cooled to a preset temperature.

[0054] The dry ice particles generated by the dry ice generating device are fed into the inner cylinder.

[0055] Control the inner cylinder to rotate to a preset speed;

[0056] Once the inner cylinder rotates to the preset speed, the centrifugal valve is opened. Attached Figure Description

[0057] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0058] Figure 1 This is a schematic diagram of a preferred embodiment of the garment processing device of the present invention;

[0059] Figure 2 This is a schematic diagram of the structure of the inner cylinder of the present invention in a first preferred embodiment;

[0060] Figure 3 This is a schematic diagram of the structure of the inner cylinder of the present invention in a second preferred embodiment;

[0061] Figure 4 yes Figure 3 Enlarged view of the structure at point A in the diagram;

[0062] Figure 5 This is a schematic diagram of the connection of the relevant devices for separating nitrogen and liquid carbon dioxide in the clothing treatment equipment of the present invention;

[0063] Figure 6 This is a flowchart of the main steps of the control method of the present invention;

[0064] Figure 7 This is a detailed flowchart of a preferred embodiment of the control method of the present invention;

[0065] Figure label:

[0066] 11. Housing; 12. Clothing processing drum; 121. Outer drum; 1221. Inlet; 1222. First outlet; 1223. Second outlet; 1224. Insulation layer; 122. Inner drum; 13. Liquid carbon dioxide storage tank; 14. Compressor; 15. Filter device; 16. Gas recovery pipeline; 17. Control valve; 18. First delivery pipeline; 19. Rotating shaft; 191. Central pipeline; 20. Mounting components; 21. Receiving chamber; 22. Venturi nozzle; 221. Contraction section; 222. Throat; 223. Diffusion section; 23. First gate; 24. Second gate; 25. Centrifugal valve; 26. Pressure relief valve; 27. Ultrasonic generator; 28. Pressure sensor; 29. ​​Enzyme preparation storage device; 30. Second delivery pipeline; 31. First condenser; 32. Gas-liquid separator; 33. Second condenser; 34. Liquid nitrogen storage device; 35. Oxygen concentration detector. Detailed Implementation

[0067] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the invention and are not intended to limit the scope of protection of the invention. Those skilled in the art can make adjustments as needed to adapt to specific applications.

[0068] It should be noted that in the description of this invention, terms such as "left" and "right," indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. This is merely for ease of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0069] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0070] First refer to Figure 1 The garment processing device of the present invention includes a garment processing cylinder 12, a dry ice generating device, and a gas recovery device connected in communication. The dry ice generating device is configured to deliver dry ice particles into the garment processing cylinder 12, and the gas recovery device is configured to recover the gas inside the garment processing cylinder 12. The garment processing cylinder 12 is provided with an insulation layer 1224. The insulation layer 1224 covers the entire area of ​​the garment processing cylinder 12 and can be located on the inner side or the outer side of the garment processing cylinder 12. Alternatively, the garment processing cylinder 12 can have a sandwich layer filled with insulation material.

[0071] The present invention enables the garment processing drum 12 to quickly enter a low-temperature state by setting an insulation layer 1224 in the garment processing drum 12, thereby preventing the dry ice particles from sublimating instantly when entering the garment processing drum 12. This allows the dry ice particles to have sufficient time to contact the garment, reducing and avoiding the sublimation of the dry ice particles, and thus effectively reducing the amount of dry ice used and saving costs.

[0072] like Figure 1As shown, the dry ice generating device includes a liquid carbon dioxide storage tank 13 and an expansion nozzle (not shown) connected to the liquid carbon dioxide storage tank 13. The liquid carbon dioxide is under high pressure inside the tank. When it is released to the normal pressure environment through the nozzle, the pressure drops sharply, causing the liquid carbon dioxide to evaporate rapidly and absorb heat, resulting in a sharp drop in temperature and direct solidification into solid dry ice particles. The liquid carbon dioxide storage tank 13 is connected to a first delivery pipe 18, which is connected to a clothing processing cylinder 12 to deliver dry ice particles into the clothing processing cylinder 12. The device also includes a control valve 17, which is located upstream or downstream of the expansion nozzle to control the opening and closing of the first delivery pipe 18. The gas recovery device includes a gas recovery pipe 16, which is connected to the clothing processing cylinder 12. After the dry ice sublimates into gas, it can be discharged to the outside of the clothing processing cylinder 12 through the gas recovery pipe 16 to avoid excessive pressure inside the cylinder.

[0073] Furthermore, the garment processing cylinder 12 includes an outer cylinder 121 and an inner cylinder 122 fitted inside the outer cylinder 121. An insulation layer 1224 is disposed on the inner cylinder 122, covering the entire area of ​​the inner cylinder 122. The insulation layer 1224 can be disposed on the inner side or the outer side of the inner cylinder 122. Alternatively, the inner cylinder 122 may have a double layer filled with insulation material. The dry ice generating device is configured to deliver dry ice particles into the inner cylinder 122. The gas recovery device is connected to the outer cylinder 121. In other words, the gas recovery pipeline 16 is connected to the outer cylinder 121. The outer cylinder 121 has a central hole, and a rotatable rotating shaft 19 is installed inside the central hole. The rotating shaft 19 is connected to the inner cylinder 122. A central pipeline 191 is installed inside the rotating shaft 19, and the central pipeline 191 is connected to the inner cylinder 122. The dry ice generating device is connected to the central pipeline 191 through the first conveying pipeline 18. The inner cylinder 122 has an inlet 1221, and the central pipeline 191 is connected to the inlet 1221. The first conveying pipeline 18 and the central pipeline 191 are dynamically sealed, which does not hinder the rotation of the rotating shaft 19, but also allows the first conveying pipeline 18 and the central pipeline 191 to be connected. The dynamic sealing connection is a relatively mature existing technology and will not be described in detail here.

[0074] The central conduit 191 can be a pipe that passes through the rotating shaft 19. In this case, the central conduit 191 can rotate relative to the rotating shaft 19, or it can rotate together with the rotating shaft 19. Alternatively, it can be formed by drilling holes through the rotating shaft 19 on the left and right. Those skilled in the art can set it according to the actual situation.

[0075] Continue reading Figure 1 ,like Figure 1As shown, the rotating shaft 19 is connected to the mounting part 20, which is used to connect to the inner cylinder 122. A sealing ring is provided between the mounting part 20 and the inner cylinder 122 to seal the gap between the mounting part 20 and the inner cylinder 122. When the rotating shaft 19 rotates, the mounting part 20 drives the inner cylinder 122 to rotate together. The rotation of the inner cylinder 122 can increase the contact rate between dry ice particles and clothing.

[0076] In some other embodiments, the inner cylinder 122 is directly connected to the rotating shaft 19, and when the rotating shaft 19 rotates, it directly drives the inner cylinder 122 to rotate.

[0077] Furthermore, the garment processing equipment also includes a first door 23 and a second door 24; the first door 23 is configured to close and open the outer cylinder 121, and the second door 24 is configured to close and open the inner cylinder 122. The inner cylinder 122 is provided with a first outlet 1222 to connect the inner cylinder 122 and the outer cylinder 121, so that the gas inside the inner cylinder 122 can be recovered by the gas recovery device (gas recovery pipeline 16). Through the arrangement of the first door 23 and the second door 24, the internal space of the inner cylinder 122 can be better cooled, achieving a superior heat preservation effect, further reducing the instantaneous sublimation of dry ice particles, and preventing the leakage of gaseous carbon dioxide.

[0078] In order to prevent dry ice from sublimating, the first delivery pipeline 18 is also covered with a heat insulation structure layer to prevent the temperature of the first delivery pipeline 18 from being affected by the environment, thereby causing the dry ice particles to sublimate.

[0079] Preferably, the first door body 23 is also provided with a heat insulation structure, or the first door body 23 is preferably made of heat insulation material.

[0080] See Figure 1 and 2 ,like Figure 1 and 2 As shown, a centrifugal valve 25 is provided at the first outlet 1222. The centrifugal valve 25 controls the first outlet 1222 to close, and the second door 24 controls the opening of the inner cylinder 122 to close, so that only the first conveying pipeline 18 conveys dry ice particles, which can achieve the pre-cooling of the inner cylinder 122 more quickly. At the same time, the centrifugal valve 25 can be opened at the appropriate time, and the dry ice particles and gas can enter the outer cylinder 121 from the first outlet 1222. The remaining dry ice particles in the outer cylinder 121 sublimate and enter the gas recovery pipeline 16 for recovery.

[0081] See Figure 2The inner cylinder 122 is also equipped with a pressure relief valve 26. Specifically, the inner cylinder 122 is also equipped with a second outlet 1223 and the first outlet 1222 is equipped with a pressure relief valve 26. Since the inner cylinder 122 is closed and the centrifugal valve 25 is in the closed state, if the pressure in the inner cylinder 122 is too high, the pressure relief valve 26 will automatically open to relieve pressure and send the gas into the outer cylinder 121, and finally be recovered by the gas recovery pipeline 16.

[0082] like Figure 1 As shown, the gas recovery line 16 is connected to the lower part of the outer cylinder 121, but this is not limiting. Figure 1 This is merely for illustration purposes and does not impose any restrictions on the specific connection method or location of the components. For example, in some other embodiments, the gas recovery pipeline 16 may be connected to the top or side of the outer cylinder 121. Those skilled in the art can set it according to the actual situation.

[0083] Continue reading Figure 1 The inner cylinder 122 is provided with a receiving chamber 21, which is connected to the central pipeline 191 through an inlet 1221. The receiving chamber 21 is provided with a Venturi nozzle 22, which can spray dry ice particles from the receiving chamber 21 into the inner cylinder 122. Figure 1 As shown, the receiving chamber 21 is provided with multiple Venturi nozzles 22. When the inner cylinder 122 rotates, it can evenly spray dry ice particles onto the clothing. The pressure inside the receiving chamber 21 is higher than the pressure inside the inner cylinder 122.

[0084] See next. Figure 3 and Figure 4 The garment processing equipment also includes an enzyme preparation storage device 29. The Venturi nozzle 22 has a constriction section 221, a throat 222, and a diffuser 223 connected in sequence. A suction port is provided at the throat 222 and is connected to the enzyme preparation storage device 29. Specifically, as... Figure 3 and 4 As shown, the aperture of the contraction section 221 is larger than the aperture of the throat 222, and the aperture of the diffuser section 223 is larger than the aperture of the throat 222. A suction port is provided at the throat 222. When the fluid passes through the Venturi nozzle 22, a negative pressure can be formed at the throat 222. The enzyme preparation storage device 29 is drawn in by the negative pressure at the suction port. Based on this, an active enzyme can be coated on the surface of the dry ice particles during spraying. When the dry ice particles sublimate, the enzyme molecules are released and decompose protein stains at low temperature.

[0085] like Figure 3As described above, the enzyme preparation storage device 29 is placed outside the inner cylinder 122. The second delivery pipe 30 connects the enzyme preparation storage device 29 and the suction port. The second delivery pipe 30 passes through the insulation layer 1224, the inner wall of the inner cylinder 122, and the inner wall of the receiving chamber 21 in sequence, and is connected to the suction port. The second delivery pipe 30 is set close to the inner wall of the inner cylinder 122 to avoid shaking when the inner cylinder 122 rotates. Of course, this is not a limitation. The second delivery pipe 30 can also be set close to the left outer wall of the inner cylinder 122, and then the second delivery pipe 30 passes through the left outer wall of the inner cylinder 122 corresponding to the receiving chamber 21 and is connected to the suction port. Alternatively, the enzyme preparation storage device 29 can be set on the left outer side of the inner cylinder 122, and then a pipe is set in the receiving chamber 21 and connected to the suction port. The pipe is connected to the enzyme preparation storage device 29. Those skilled in the art can set it according to the actual situation.

[0086] Furthermore, a pump device (not shown in the figure) is provided between the first delivery pipeline 18 and the enzyme preparation storage device 29. The first delivery pipeline 18 connects the pump device and the receiving chamber 21. The pump device is used to draw the enzyme preparation from the enzyme preparation storage device 29 into the receiving chamber 21.

[0087] Furthermore, a battery is installed on the inner cylinder 122 to power the pump device. Based on this, the pump device can still pump in the enzyme preparation even when the inner cylinder 122 rotates. Alternatively, the pump device can be mounted on the mounting component 20, with conductive wires inside the mounting component 20 and the wall of the rotating shaft 19. These conductive wires connect the pump device to power it. Alternatively, the rotating shaft 19 and the mounting component 20 can be electrically conductive, while the inner cylinder 122 and the outer cylinder 121 are insulated. Powering the rotating shaft 19 is sufficient to power the pump device.

[0088] The enzyme preparation can be a cold-resistant protease, a solvent containing a cold-resistant protease, or other enzymes capable of breaking down stains.

[0089] In addition, for easy addition, an opening (not shown in the figure) is provided on the outer cylinder 121, and a sealed cover is provided at the opening. Opening the cover reveals the enzyme preparation storage device 29, which facilitates the addition of enzyme preparation. The box 11 part corresponding to the enzyme preparation storage device 29 is also provided with an opening and a cover, which facilitates opening and closing for adding operations.

[0090] Continue reading Figure 1 The gas recovery device and the dry ice generating device are connected, and a filter device 15 is installed between the gas recovery device and the dry ice generating device. The filter device 15 is used to filter particles in the gas. Figure 1As shown, the gas recovery pipeline 16 is connected to the filter device 15, the filter device 15 is connected to the compressor 14, and the compressor 14 is connected to the liquid carbon dioxide storage tank 13. Dry ice particles can remove dirt from clothing and sublimate into gaseous carbon dioxide. The gas enters the filter device 15 through the gas recovery pipeline 16. The filter device 15 filters out the dirt and impurity particles from clothing in the gas. After that, the clean gaseous carbon dioxide is compressed into liquid by the compressor 14 and enters the liquid carbon dioxide storage tank 13. The liquid carbon dioxide storage tank 13 is a dedicated storage tank in the prior art, which can meet the temperature and pressure requirements for storing liquid carbon dioxide.

[0091] The filter device 15 can be a cyclone separator, an electrostatic precipitator, or a UV photocatalytic device to remove impurities from the gaseous carbon dioxide. It can also be other filters specifically designed for purifying carbon dioxide. Those skilled in the art can set it up according to the actual situation.

[0092] In other embodiments, the compressor 14 is replaced by a condenser, which uses the condensing effect of the condenser to condense gaseous carbon dioxide into liquid carbon dioxide and send it into the liquid carbon dioxide storage tank 13.

[0093] In other embodiments, a condenser and a compressor 14 are provided after the filter device 15 to liquefy gaseous carbon dioxide by utilizing the dual effects of condensation and compression.

[0094] See next. Figure 5 The clothing processing equipment of the present invention further includes a liquid nitrogen storage device 34, a first condensing device 31, and a gas-liquid separator 32. The liquid nitrogen storage device 34 is connected to the clothing processing cylinder 12, and the first condensing device 31 and the gas-liquid separator 32 are sequentially arranged between the filtration device 15 and the dry ice generating device. Figure 5As shown, the delivery pipeline of the liquid nitrogen storage device 34 is connected to the delivery pipeline of the liquid carbon dioxide storage tank 13, and after mixing, it is connected to the clothing treatment cylinder 12 or the inner cylinder 122. The gas recovery pipeline 16 is connected to the filter device 15. After the filter device 15, a first condenser 31 is connected. After the first condenser 31, a gas-liquid separator 32 is connected. The gas outlet of the gas-liquid separator 32 is connected to a second condenser 33. After the second condenser 33, the liquid nitrogen storage device 34 is connected. The liquid outlet of the gas-liquid separator 32 is connected to the liquid carbon dioxide storage tank 13. Based on the above structural configuration, the liquid nitrogen storage device 34 injects liquid nitrogen into the clothing treatment cylinder 12 or the inner cylinder 122 for rapid pre-cooling. Then, the liquid carbon dioxide storage tank 13 is opened, and dry ice particles are introduced into the clothing treatment cylinder 12 or the inner cylinder 122. At this time, there is a mixture of gaseous carbon dioxide and nitrogen in the gas recovery pipeline 16. After being filtered by the filter device 15, it enters the first condenser 31. The temperature of the first condenser 31 is controlled to just be enough to liquefy carbon dioxide. Then, the liquid carbon dioxide and nitrogen are separated after passing through the gas-liquid separator 32. The liquid carbon dioxide enters the liquid carbon dioxide storage tank 13 for storage, and the nitrogen is condensed into liquid nitrogen by the second condenser 33 and enters the liquid nitrogen storage device 34 for storage. This configuration ensures that even if nitrogen is injected, the purity of the liquid carbon dioxide will not be affected.

[0095] A valve is installed on the delivery pipeline of the liquid nitrogen storage device 34 or between the liquid nitrogen storage device 34 and its delivery pipeline to control its opening and closing.

[0096] In other embodiments, the second condensation device 33 may not be provided, that is, the nitrogen gas may not be liquefied and the nitrogen gas may be released directly. Alternatively, a nitrogen storage device may be provided to introduce the nitrogen gas.

[0097] Although the gas recovery device described above includes a gas recovery pipeline 16, which ultimately leads carbon dioxide back to the liquid carbon dioxide storage tank 13, this is not limiting. It is also possible that the gas recovery device also includes a storage chamber, with the gas recovery pipeline 16 simply connected to the storage chamber, introducing carbon dioxide gas into the storage chamber for storage through the gas recovery pipeline 16.

[0098] Furthermore, the clothing handling tube 12 mentioned above includes an outer tube 121 and an inner tube 122, but this is not limiting. In some other embodiments, the clothing handling tube 12 is simply a tube that cannot be rotated and can hold clothing. Those skilled in the art can set it according to the actual situation.

[0099] Furthermore, the dry ice generating device described above includes a liquid carbon dioxide storage tank, and may also include a compressor or condenser.

[0100] Continue reading Figure 1 The garment processing equipment also includes an ultrasonic generator 27, which is located at the bottom of the garment processing drum 12, such as... Figure 1 As shown, the ultrasonic generator 27 is located at the bottom of the outer cylinder 121 and can emit ultrasonic waves to enhance the contact efficiency between dry ice particles and clothing by using high-frequency vibrations of sound waves.

[0101] Furthermore, a pressure sensor 28 is installed on the inner wall of the outer cylinder 121. When the internal pressure of the outer cylinder 121 is too high, the sensor controls the dry ice to stop generating or reduce the amount generated; when the internal pressure of the outer cylinder 121 is too low, the sensor controls the dry ice to increase the amount generated. The standard for judging whether the pressure is too low or too high is whether it exceeds the preset pressure.

[0102] Furthermore, an oxygen concentration detector 35 is installed between the inside of the housing 11 and the outside of the clothing processing drum 12. When the oxygen concentration is lower than the threshold, the clothing processing equipment is shut down because the low oxygen concentration indicates a carbon dioxide leak, which leads to the low oxygen concentration. In this case, the machine is shut down to prevent the user from experiencing oxygen deficiency due to the low indoor concentration.

[0103] See next. Figure 6 The present invention also provides a control method, the main steps of which include:

[0104] Step S1: After receiving the garment processing instruction, control the garment processing drum to pre-cool to the preset temperature;

[0105] Step S2: Control the dry ice generating device to generate dry ice particles and send them into the clothing treatment drum.

[0106] In step S1, a clothing processing instruction is received. This instruction can be placed by the user through the control panel or remote control terminal of the clothing processing equipment, or it can be generated by the clothing processing equipment in smart mode by detecting whether there is clothing in the clothing processing drum 12 or the inner drum 122. If there is clothing, a clothing processing instruction is automatically generated; otherwise, no instruction is generated. The clothing processing drum 12 is pre-cooled to a preset temperature. This can be done by injecting liquid nitrogen into the clothing processing drum 12. Once the temperature of the clothing processing drum 12 reaches the preset temperature, the injection of liquid nitrogen is stopped. Other methods can also be used for pre-cooling, as long as the clothing processing drum 12 can be pre-cooled. The preset temperature can be between -60℃ and -50℃, or other temperature ranges.

[0107] In step S2, once the temperature of the garment processing cylinder 12 reaches the preset temperature, the dry ice generating device is controlled to generate dry ice particles and send them into the garment processing cylinder 12. That is, the control valve 17 is opened, and the mixture of dry ice solid particles and gaseous carbon dioxide enters the receiving chamber 21 from the first delivery pipe 18 and is then sprayed onto the garment.

[0108] See next. Figure 7The detailed steps of a preferred embodiment of the control method of the present invention include:

[0109] Step S101: After receiving the clothing processing instruction, control the inner drum to pre-cool to the preset temperature;

[0110] Step S102: Control the dry ice generating device to generate dry ice particles and send them into the inner cylinder;

[0111] Step S103: Control the inner cylinder to rotate to the preset speed;

[0112] Step S104: After the inner cylinder rotates to the preset speed, control the centrifugal valve to open;

[0113] In step S101, a clothing processing instruction is received. This instruction can be placed by the user through the control panel or remote control terminal of the clothing processing equipment, or it can be generated by the clothing processing equipment in smart mode by detecting whether there are clothes in the inner drum 122. If there are clothes, a clothing processing instruction is automatically generated; otherwise, no instruction is generated. The inner drum 122 is then pre-cooled to a preset temperature. This can be achieved by injecting liquid nitrogen into the inner drum 122. Once the temperature of the clothing processing drum 122 reaches the preset temperature, the injection of liquid nitrogen is stopped. Other pre-cooling methods can also be used, as long as the inner drum 122 is pre-cooled. The preset temperature can be between -60℃ and -50℃, or it can be any other temperature range.

[0114] In step S102, once the temperature of the inner cylinder 122 reaches the preset temperature, the dry ice generating device is controlled to generate dry ice particles and send them into the inner cylinder 122. That is, the control valve 17 is opened, and the mixture of dry ice solid particles and gaseous carbon dioxide enters the receiving chamber 21 from the first conveying pipeline 18 and is then sprayed onto the clothing.

[0115] After step S102, steps S103 and S104 are executed. The centrifugal valve 25 can open automatically by the rotation of the inner cylinder 122. That is, when the inner cylinder 122 rotates to a preset speed, the centrifugal valve 25 opens automatically by the centrifugal force of the fluid.

[0116] In other embodiments, the weight of the clothing is obtained, and the amount of dry ice particles to be sprayed is determined based on the weight of the clothing. The controller of the clothing processing equipment stores a one-to-one correspondence table between the weight of the clothing and the amount of dry ice particles to be sprayed (which can be set by a technician). Obtaining the weight of the clothing allows the determination of the amount of dry ice particles to be sprayed. The amount of dry ice particles to be sprayed corresponds to the amount of liquid carbon dioxide. The amount of sprayed can be controlled by controlling the opening or degree of the control valve 17, or by controlling the opening time.

[0117] In other embodiments, an image of the clothing is acquired, the stain area is determined based on the clothing image, and the dry ice particle spraying amount is determined based on the stain area; the controller of the clothing treatment equipment stores a one-to-one correspondence table between stain area and dry ice particle spraying amount (which can be set by the technician), and the dry ice particle spraying amount can be determined by acquiring the stain area.

[0118] In other embodiments, the weight of the clothing is obtained; an image of the clothing is obtained; the area of ​​the stain is determined based on the image of the clothing; the amount of dry ice particles to be sprayed is determined based on the weight of the clothing and the area of ​​the stain; the controller of the clothing treatment device is equipped with a one-to-one correspondence table between the weight of the clothing and the amount of dry ice particles to be sprayed, and also stores a one-to-one correspondence table between the area of ​​the stain and the amount of dry ice particles to be sprayed; a first spray amount is determined based on the weight of the clothing; a second spray amount is determined based on the area of ​​the stain; and the average of the first spray amount and the second spray amount is the actual amount of dry ice to be sprayed.

[0119] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A garment processing device, characterized in that, The garment processing equipment includes a connected garment processing cylinder (12), a dry ice generating device, and a gas recovery device. The dry ice generating device is configured to deliver dry ice particles into the clothing processing cylinder (12), and the gas recovery device is configured to recover the gas in the clothing processing cylinder (12). The garment processing drum (12) is provided with an insulation layer (1224).

2. The garment processing equipment according to claim 1, characterized in that, The garment processing cylinder (12) includes an outer cylinder (121) and an inner cylinder (122) fitted inside the outer cylinder (121). The heat insulation layer is disposed on the inner cylinder (122). The dry ice generating device is configured to send dry ice particles into the inner cylinder (122). The gas recovery device is connected to the outer cylinder (121).

3. The garment processing equipment according to claim 2, characterized in that, The garment processing equipment also includes a first door (23) and a second door (24); The first door (23) is configured to close and open the outer cylinder (121), and the second door (24) is configured to close and open the inner cylinder (122). The inner cylinder (122) is provided with a first outlet (1222) to connect the inner cylinder (122) and the outer cylinder (121), so that the gas in the inner cylinder (122) can be recovered by the gas recovery device.

4. The garment processing equipment according to claim 3, characterized in that, A centrifugal valve (25) is provided at the first outlet (1222).

5. The garment processing equipment according to claim 4, characterized in that, The inner cylinder (122) is also equipped with a pressure relief valve (26).

6. The garment processing equipment according to claim 2, characterized in that, The outer cylinder (121) is provided with a central hole, and a rotatable rotating shaft (19) is provided in the central hole. The rotating shaft (19) is connected to the inner cylinder (122). A central pipe (191) is provided inside the rotating shaft (19), and the central pipe (191) is connected to the inner cylinder (122). The dry ice generating device is connected to the central pipe (191).

7. The garment processing equipment according to claim 6, characterized in that, The inner cylinder (122) is provided with a receiving chamber (21), which is connected to the central pipeline (191). The receiving chamber (21) is provided with a Venturi nozzle (22), which can spray dry ice particles in the receiving chamber (21) into the inner cylinder (122).

8. The garment processing equipment according to claim 7, characterized in that, The garment processing equipment also includes an enzyme preparation storage device (29). The Venturi nozzle (22) has a constriction section (221), a throat (222) and a diffuser section (223) connected in sequence. A suction port is provided at the throat (222) and the suction port is connected to the enzyme preparation storage device (29).

9. The garment processing apparatus according to any one of claims 1 to 8, characterized in that, The gas recovery device and the dry ice generating device are connected, and a filter device (15) is provided between the gas recovery device and the dry ice generating device. The filter device (15) is used to filter particles in the gas.

10. The garment processing equipment according to claim 9, characterized in that, The garment processing equipment also includes a liquid nitrogen storage device (34), a first condenser (31), and a gas-liquid separator (32). The liquid nitrogen storage device (34) is connected to the garment processing cylinder (12). The first condenser (31) and the gas-liquid separator (32) are arranged sequentially between the filter device (15) and the dry ice generating device.

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