CN104894818A - Dry cleaning machine and dry cleaning solvent regeneration method used by dry cleaning machine - Google Patents

Abstract

The invention provides a dry cleaning machine and a method for regenerating a dry cleaning solvent used therein. Wherein, the dry-cleaning machine includes: a purification box for receiving the dry-cleaning solvent used in the dry-cleaning machine; and an ultrasonic generator for generating ultrasonic waves to atomize the dry-cleaning solvent in the purification box to obtain the atomized dry-cleaning solvent. In the technical solution of the present invention, the high-temperature distillation equipment with complex structure is replaced by an ultrasonic generator, avoiding the use of high-temperature distillation process for solvent gasification, improving safety performance, greatly reducing cost, and reducing system complexity.

Description

Dry cleaning machine and method for regenerating dry cleaning solvent used therein

technical field

The invention relates to a dry-cleaning machine, in particular to a dry-cleaning machine capable of regenerating and reusing a dry-cleaning solvent and a method for regenerating the dry-cleaning solvent.

Background technique

Most of the dry-cleaning equipment in the prior art is an industrial dry-cleaning machine, which is suitable for occasions where a large amount of clothes are processed intensively, such as laundries and large hotels. Currently, there is no dry-cleaning machine suitable for home use in the market.

In addition, the existing dry-cleaning machines that use solvents to clean clothes generally include: a solvent tank, a solvent pump, a washing tub (usually including a fixed outer tub and an inner tub that is rotatably installed in the outer tub), a liquid storage tank, Drying device, etc. The dry cleaning process is roughly as follows: the solvent in the solvent tank is pumped into the outer cylinder by the solvent pump through the liquid inlet pipe, and then enters the inner cylinder. The rotation of the inner cylinder drives the clothes to be turned over for washing. Liquid operation, the solvent is discharged to the liquid storage tank through the liquid outlet pipe to separate the solvent from the clothes. After the dehydration is completed, the drying device is started to evaporate the residual solvent in the clothes, and the solvent vapor is taken away through the exhaust port, and the air is used to circulate in the air duct to realize the drying of the clothes.

Dry-cleaning solvents are different from common washing water. Not only are the costs generally high, but direct discharge can also cause environmental problems. Therefore, the dry-cleaning solvents in existing dry-cleaning machines are recycled. In the prior art, distillation equipment is usually used to purify the recovered solvent in the liquid storage tank. The specific process is: use a heating device to distill the recovered solvent into steam, and then use a condensing device to cool the steam into a liquid, which flows through the oil-water separator. To the solvent box to realize the purification and recovery of the solvent. Existing large-scale dry-cleaning machines use a separate high-power distillation, and use a condenser in the form of circulating water for steam cooling. This type of dry-cleaning machine has a complex structure, many components, and takes up a lot of space, which cannot meet the requirements of household dry-cleaning machines.

Contents of the invention

An object of the present invention is to overcome at least one defect of the prior art dry cleaning machine, and provide a dry cleaning machine and a dry cleaning solvent regeneration method with a simple structure that can safely regenerate the dry cleaning solvent.

A further object of the present invention is to make the dry-cleaning machine and method of the present invention more energy-saving and power-saving when regenerating the dry-cleaning solvent.

According to one aspect of the present invention, a dry cleaning machine is provided. The dry-cleaning machine includes: a purification box for receiving the dry-cleaning solvent used in the dry-cleaning machine; and an ultrasonic generator for generating ultrasonic waves to atomize the dry-cleaning solvent in the purification box to obtain the atomized dry-cleaning solvent.

Optionally, the above-mentioned dry-cleaning machine also includes: a condensing device, which condenses the atomized dry-cleaning solvent into a liquid state; an oil-water separator, which separates the dry-cleaning solvent condensed into a liquid state; and a liquid storage tank, which stores the dry-cleaning solvent after the oil-water separation. solvent.

Optionally, the condensing device is an airflow condenser arranged in the drying air duct of the dry cleaning machine; upstream position.

Optionally, the first end of the atomized solvent channel leads into the top atomized space in the purge box, and the second end connects to the upstream position of the airflow condenser in the drying clothes air channel.

Optionally, the communication position between the second end of the atomized solvent channel and the drying air duct is adjacent to the communication port where the drying air duct connects with the outer cylinder of the dry cleaning machine.

Optionally, a coarse filter and a one-way valve are provided between the outer cylinder of the dry cleaning machine and the purification box; when the one-way valve is turned on, the dry cleaning solvent in the outer cylinder passes through the liquid outlet pipe at the bottom of the outer cylinder under the action of gravity. The road flows into the coarse filter, and after being filtered by the coarse filter, it is discharged into the purification box through the one-way valve.

Optionally, the ultrasonic generator is arranged below the clean box.

According to another aspect of the present invention, a dry cleaning solvent regeneration method for a dry cleaning machine is provided. The method for regenerating the dry-cleaning solvent comprises: atomizing the dry-cleaning solvent used in the dry-cleaning machine by ultrasonic waves; condensing the atomized dry-cleaning solvent into a liquid state; separating oil from water from the condensed dry-cleaning solvent; and performing dry cleaning after the oil-water separation The solvent is recycled to the reservoir of the dry cleaning machine.

Optionally, the ultrasonic wave is used to atomize the dry-cleaning solvent and the drying process of the clothes by the dry-cleaning machine is carried out synchronously.

Optionally, before the ultrasonic wave is used to atomize the used dry cleaning solvent in the dry cleaning machine, filtering the used dry cleaning solvent is also included.

Optionally, filtering the used dry-cleaning solvent includes: the used dry-cleaning solvent flows out from the outer cylinder under the action of gravity, after filtering, it is discharged through a one-way valve, so as to be atomized by ultrasonic waves.

The dry-cleaning machine and the dry-cleaning solvent regeneration method of the present invention use an ultrasonic generator to replace high-temperature distillation equipment with a complex structure, avoid the use of high-temperature distillation process for solvent vaporization, and improve safety performance.

Further, the atomization process of the dry-cleaning solvent in the present invention can be carried out simultaneously with the drying process of the clothes, and the airflow condenser and the oil-water separator of the drying device are reused, without adding additional The complex device simplifies the internal structure of the dry cleaning machine.

Description of drawings

Hereinafter, some specific embodiments of the present invention will be described in detail by way of illustration and not limitation with reference to the accompanying drawings. The same reference numerals in the drawings designate the same or similar parts or parts. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the attached picture:

Fig. 1 is a schematic structural diagram of a dry cleaning machine according to an embodiment of the present invention; and

Fig. 2 is a schematic flowchart of a dry cleaning solvent regeneration method for a dry cleaning machine according to an embodiment of the present invention.

Detailed ways

Fig. 1 is a schematic structural view of a dry cleaning machine according to an embodiment of the present invention. The dry cleaning machine in this embodiment may generally include: a solvent storage tank 111 , a solvent pump 112 , an inner cylinder 114 , an outer cylinder 115 , a purification tank 116 , and a drying system.

The outer cylinder 115 is fixed on the casing by a suspension support mechanism; the inner cylinder 114 is installed in the outer cylinder 115 and can rotate axially under the drive of the motor; There are several openings (not shown in the figure) for the solvent to pass through, and a liquid inlet 141 and a liquid outlet 142 are opened on the wall of the outer cylinder 115, and the liquid outlet 142 at the bottom of the outer cylinder is connected to the purified Box 116.

The solvent storage tank 111 is used to store the dry cleaning solvent. During the washing process, the solvent pump 112 can pump the cleaning solvent from the solvent storage tank 111 to the outer cylinder 115 through the liquid inlet 141 as needed. The clothes in the inner cylinder 114 are mixed with the washing solvent, and the motor drives the inner cylinder 114 to rotate, driving the clothes to tumble for washing. Then carry out the draining and dehydration process. During the dehydration process, the motor drives the inner cylinder 114 to rotate rapidly, and the solvent remaining on the clothes after draining is thrown out through the wall opening of the inner cylinder 114 by centrifugal force. The used solvent is discharged into the purge box 116 for subsequent recovery and regeneration of the solvent.

The clothes drying system dries the clothes after washing and dehydrating. The clothes drying system includes a clothes drying duct 121 , a fan 123 , an airflow condenser 124 and an airflow heater 125 . Clothes drying duct 121 is arranged between the air inlet duct and exhaust duct of outer cylinder 115, fan 123, airflow condenser 124, and airflow heater 125 are arranged in drying duct 121, and the airflow in drying duct 121 It passes through the airflow condenser 124 and the airflow heater 125 in sequence. When the airflow passes through the airflow condenser 124, the solvent vapor is condensed and condensed, and is recycled to the oil-water separator 126. The dried airflow is heated by the airflow heater 125, and enters the outer cylinder 115 through the air inlet pipe to dry the clothes. Dry, then the airflow with solvent vapor is discharged from the exhaust pipe, and circulates into the drying air duct 121.

The clothes drying system may adopt a compressor-type heat pump system, and the heat pump clothes drying system may include a compressor 127, a heat transfer medium evaporator, and a heat transfer medium condenser, wherein the heat transfer medium evaporator is used as an airflow condenser in the air duct for drying clothes 124, to condense the solvent vapor into a liquid, and the heat transfer medium condenser is used as a gas flow heater 125 to heat the drying gas flow. Adopting the above-mentioned compressor type heat pump circulation system, the structure is compact and the efficiency is high. Of course, the airflow condenser 124 and the airflow heater 125 can also be selected from other suitable devices with condensation or heating functions.

In order to recycle the used dry-cleaning solvent recovered by the purification box 116, in one embodiment of the present invention, the dry-cleaning machine is also specially provided with an ultrasonic generator 113 for generating ultrasonic waves to atomize the dry-cleaning solvent in the purification box 116, To obtain an atomized dry cleaning solvent. The ultrasonic generator 113 adopts a high-frequency electronic oscillation circuit, and the ultrasonic energy generated by the transducer sheet directly acts on the dry-cleaning solvent in the clean box 116, so that the dry-cleaning solvent is atomized under strong ultrasonic action.

Compared with existing industrial dry cleaning machines that use high temperature distillation to vaporize dry cleaning solvents, the structure of the ultrasonic generator 113 is smaller, which reduces power consumption and avoids potential safety hazards caused by high temperatures.

The atomized dry-cleaning solvent can be led to a separate condensing device for condensation and liquefaction to obtain purified dry-cleaning solvent. The condensing device condenses the atomized dry cleaning solvent into a liquid state, and recovers the condensed dry cleaning solvent to the liquid storage tank 111 .

In one embodiment of the present invention, the fan 123 and the condensing device 124 of the heat pump drying system are used to restore the atomized dry cleaning solvent to a liquid state, thereby reusing the airflow condenser and the oil-water separator of the heat pump drying system to device, further simplifying the structure of the dry cleaning machine. That is to say, the dry-cleaning solvent atomized by the ultrasonic generator 113 is condensed into a liquid state by using the airflow condenser 124 in the air-drying air duct 121 of the dry-cleaning machine. Since the condensed liquid contains a part of water, the oil-water separator 126 can be used to separate the dry-cleaning solvent condensed into a liquid state, and the dry-cleaning solvent separated by the oil-water separator 126 can be recycled into the liquid storage tank 111 for subsequent use.

The dry cleaning machine can also be provided with an atomized solvent channel 117 to guide the atomized dry cleaning solvent to the position upstream of the airflow condenser 124 in the drying air duct 121 . The first end of the atomized solvent passage 117 leads into the top atomized space in the purification box 116, and the communication position between the second end of the atomized solvent passage 117 and the drying air duct 121 is adjacent to the outside of the drying air duct 121 and the dry cleaning machine. The communication port where the barrel 115 is connected. After the fan 123 is turned on, a negative pressure is generated at the upstream position of the airflow condenser 124, and the dry cleaning solvent vapor atomized in the top atomizing space in the purification box 116 can automatically enter the drying air channel 121 along the atomizing solvent channel 117 , and condenses into a liquid after passing through the airflow condenser 124. The condensed liquid enters the oil-water separator 126 through the solvent recovery channel 118 . The water separated by the oil-water separator 126 is drained through the drain pipe 129. When the clean solvent in the oil-water separator 126 reaches a certain amount, the clean solvent is discharged into the solvent storage tank 111 through the solvent recovery pipeline 128 for repeated use. .

The process of regenerating the dry-cleaning solvent in the dry-cleaning machine in this embodiment can be carried out simultaneously with the step of drying clothes in the dry-cleaning machine, so as to realize the reuse of the heat pump drying system and save the electric energy consumed by regenerating the dry-cleaning solvent.

A coarse filter 143 and a one-way valve 144 are arranged between the outer cylinder 115 and the purification box 116 of the dry cleaning machine; The liquid outlet 142 flows into the coarse filter 143 through the liquid outlet pipeline, and after being filtered by the coarse filter 143 , it is discharged into the purification box 116 through the one-way valve 143 . The coarse filter 143 can filter out impurities with larger particles (such as buttons from clothes etc.), and the one-way valve 143 only allows the solvent to flow to the purification box 116 to prevent the solvent vapor in the purification box 116 from returning to the outer cylinder 115 . Stains and tiny lint in the discharged dry-cleaning solvent accumulate at the bottom of the purification box 116 after the dry-cleaning solvent is regenerated, and can be cleaned regularly.

The ultrasonic generator 133 may be disposed below the purge box 116 . Its transducing sheet extends to the inside of the clean box 116 through the lower part of the clean box 116 , contacts with the dry cleaning solvent, and utilizes the ultrasonic resonance generated by the ultrasonic generator 133 to atomize the dry cleaning solvent. In another arrangement, the ultrasonic generator 133 can be arranged on one side of the clean box 116 , and the transducer sheet extends from the side wall of the clean box 116 to the inside of the clean box 116 .

An embodiment of the present invention also provides a dry cleaning solvent regeneration method for a dry cleaning machine, and the dry cleaning solvent regeneration method is used in the dry cleaning machine introduced in the above embodiments. Fig. 2 is a schematic flow diagram of a dry cleaning solvent regeneration method for a dry cleaning machine according to an embodiment of the present invention, the method comprising the following steps:

Step S202, using ultrasonic waves to atomize the dry cleaning solvent used in the dry cleaning machine;

Step S204, condensing the atomized dry cleaning solvent into a liquid state;

Step S206, performing oil-water separation on the condensed dry cleaning solvent; and

Step S208, recovering the dry-cleaning solvent after oil-water separation to the liquid storage tank of the dry-cleaning machine.

Wherein, step S204 can use the heat pump drying system to condense. In an alternative solution, the atomized solvent channel guides the atomized dry cleaning solvent to the air duct for condensation by using the negative pressure generated after the fan is turned on. upstream of the condenser and condenses into a liquid after passing through the airflow condenser. In this way, step S202 and step S204 can be performed synchronously with the drying process of the dry cleaning machine, and the fan and airflow condensing device of the heat pump drying system can be reused, the structure of the dry cleaning machine can be simplified, and the electric energy consumed by the dry cleaning machine can be saved. .

In an embodiment of the present invention, the used dry cleaning solvent may be filtered before step S202. One of the filtering methods is: the used dry cleaning solvent flows out from the outer cylinder under the action of gravity, after being filtered, it is discharged through a one-way valve, so as to be atomized by ultrasonic waves. Impurities with larger particles (such as buttons from clothes, etc.) can be filtered out by filtration. Impurities such as stains and tiny lint in the discharged dry-cleaning solvent accumulate at the bottom of the purification box after the dry-cleaning solvent is regenerated, and can be cleaned regularly.

Compared with the existing dry cleaning solvent regeneration method (such as filter distillation method), the dry cleaning solvent regeneration method for dry cleaning machines in this embodiment is rapidly atomized under the action of ultrasonic waves, and the airflow of the drying device can be reused The condenser and the oil-water separator further simplify the internal structure of the dry cleaning machine, greatly reducing the cost and system complexity.

So far, those skilled in the art should appreciate that, although a number of exemplary embodiments of the present invention have been shown and described in detail herein, without departing from the spirit and scope of the present invention, the disclosed embodiments of the present invention can still be used. Many other variations or modifications consistent with the principles of the invention are directly identified or derived from the content. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims (11)

1. A dry cleaning machine, comprising: a clean box to receive used dry cleaning solvent in said dry cleaning machine; and The ultrasonic generator generates ultrasonic waves to atomize the dry-cleaning solvent in the purification box to obtain the atomized dry-cleaning solvent. 2. The dry cleaning machine according to claim 1, further comprising: A condensing device for condensing the atomized dry-cleaning solvent into a liquid state; an oil-water separator for oil-water separation of dry cleaning solvents that condense into a liquid; and The liquid storage tank stores the dry-cleaning solvent after oil-water separation. 3. The dry cleaning machine of claim 2, wherein The condensing device is an air flow condenser arranged in the clothes drying duct of the dry cleaning machine; and The dry-cleaning machine also includes an atomized solvent channel to guide the atomized dry-cleaning solvent to a position upstream of the airflow condenser in the drying air channel. 4. The dry cleaning machine of claim 3, wherein The first end of the atomized solvent passage leads into the top atomized space in the purification box, and the second end communicates with the upstream position of the airflow condenser in the drying clothes air duct. 5. The dry cleaning machine of claim 4, wherein The communication position between the second end of the atomized solvent channel and the drying air duct is adjacent to the communication port where the drying air duct connects with the outer cylinder of the dry cleaning machine. 6. The dry cleaning machine of claim 1, wherein A coarse filter and a one-way valve are arranged between the outer cylinder of the dry cleaning machine and the purification box; When the one-way valve is turned on, the dry cleaning solvent in the outer cylinder flows into the coarse filter through the liquid outlet pipeline at the bottom of the outer cylinder under the action of gravity, and after being filtered by the coarse filter, passes through the The one-way valve discharges into the purge tank. 7. The dry cleaning machine of claim 1, wherein The ultrasonic generator is arranged below the purification box. 8. A dry cleaning solvent regeneration method for a dry cleaning machine, comprising: atomizing the dry cleaning solvent used in the dry cleaning machine by ultrasonic waves; Condensing the atomized dry cleaning solvent into a liquid state; Oil-water separation of dry cleaning solvents that condense into liquids; and The dry cleaning solvent after oil-water separation is recovered. 9. dry cleaning solvent regeneration method according to claim 8, wherein The atomization of the dry-cleaning solvent by ultrasonic waves is carried out synchronously with the drying process of the clothes by the dry-cleaning machine. 10. dry cleaning solvent regeneration method according to claim 8, wherein Before atomizing the used dry-cleaning solvent in the dry-cleaning machine by ultrasonic waves, filtering the used dry-cleaning solvent is also included. 11. dry cleaning solvent regeneration method according to claim 10, wherein Filtering the used dry cleaning solvent includes: The used dry-cleaning solvent flows out from the outer cylinder under the action of gravity, is filtered, and is discharged through a one-way valve to be atomized by ultrasonic waves.