JPH075832Y2 - Dry cleaner - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a dry cleaner for introducing soap into a solvent.

(B) Conventional Technology An example of this type of dry cleaner is disclosed in Japanese Utility Model Laid-Open No. 63-111890. This one detects the soap concentration in the solvent supplied to the cleaning tank by the output voltage between the electrodes to which a high frequency alternating voltage is applied, and the soap supply means is provided by the difference between the preset concentration and the detected concentration. Supplies soap into the cleaning tank.

(C) Problems to be Solved by the Invention In such a conventional example, since the soap is directly put into the washing tub, the soap may directly touch the clothes to cause color fringing. In addition, it was necessary to separately provide a metering pump for charging soap.

On the other hand, in JP-A-62-213797, the solvent in the solvent tank is circulated between the solvent flow path outside the solvent tank that does not include a washing tub and the solvent tank, and when the solvent is circulated, the soap is supplied. Is disclosed, in which the pump is operated to mix the soap with the solvent. Then, the cleaning is performed by supplying the solvent mixed with the soap to the washing tub.

However, in the configuration disclosed in this Japanese Patent Laid-Open No. 62-213797, the soap does not come into direct contact with the clothes, so that color fringing does not occur, but by mixing the soap with all the solvents in the solvent tank, the soap is Is unnecessary consumed. In addition, a pump for feeding soap is still needed.

The present invention is intended to provide a dry cleaner having a simple structure that prevents the clothes from being colored due to the introduction of soap and suppresses unnecessary consumption of soap.

(D) Means for Solving the Problems A dry cleaner according to the present invention comprises a washing tub, a solvent tank containing a solvent connected to a solvent flow path outside the washing tub via a main valve, and the main valve. In the open state, while supplying the solvent in the solvent tank into the cleaning tank through the solvent flow path, in the closed state of the main valve, the solvent supplied to the cleaning tank and the solvent flow path. A pump that circulates between the cleaning tank, a soap tank, a soap supply path that connects the soap tank to the solvent flow path, a soap outlet valve that opens and closes the soap supply path, and the solvent circulation by the pump. In the case of, in order to mix the soap in the soap tank with the solvent by the pump force, an outlet valve opening part that opens the soap outlet valve, and a cleaning operation is performed in a state where the solvent is mixed with the soap. And a cleaning operation unit.

(E) Action When the solvent supplied to the cleaning tank is circulated between the solvent flow path outside the cleaning tank and the cleaning tank with the solvent tank separated by closing the main valve, the soap outlet valve is Open it and mix the soap in the soap tank with the solvent by the suction force or sudden output of the pump. After the soap is mixed, the cleaning operation is performed.
As a result, the soap does not come into direct contact with the clothes and the clothes do not stain.

(F) Example Hereinafter, referring to the drawings, a first tank 1 containing a cleaning solvent and a second tank 2 containing a rinsing solvent are pumped through a main valve 3 and a pump 5 respectively. It is connected to the suction side of. The main flow passage on the discharge side of the pump 5 has a check valve 6,
Filter valve 7, cartridge type filter device 8,
It communicates with the cleaning tank 12 via the liquid supply valve 9, the soap concentration detector 10, and the flow path sensor 11. This main flow path soap concentration detector 10
The upstream side of is returned to the first tank 1 via the circulation valve 13. The distillation valve 14 is provided on the upstream side of the filter valve 7 in the main flow path.
To the distiller 15 via. Then, the filter valve 7 and the filter 8 are bypassed by the bypass passage having the bypass valve 16.

The drainage port of the cleaning tank 12 is connected to the suction side of the pump 5 via a button trap 17 and a drainage valve 18.

The distillation solvent from the distiller 15 is cooled by the cooler 19 and the water separator 20.
To the second tank 2 via. The washing tank 12 has a collection tank 21 for drying the clothes while condensing the solvent in the clothes.
Is attached. Further, the button trap 17 is provided with a liquid level detecting means 22 including a multistage float switch or the like.

Here, the soap concentration detector 10 applies a high frequency alternating voltage between the electrodes and detects the soap concentration from the output voltage. Then, the soap supply path 24 of the soap tank 23
Is connected to the vicinity of the suction port of the pump 5 via a soap outlet valve 25, and the soap can be introduced into the main flow path by the suction force when the pump 5 is driven.

1 and 5 show a cylindrical filter 26 that is detachably accommodated in the filter device 8.

That is, the filter 26 has a filter paper part 27 (outer peripheral side) and an activated carbon part 29 (inner peripheral side) containing the granular activated carbon 28 formed concentrically, and the end faces of the filter plates 27 and 31 are formed by end plates 30 and 31, respectively. It is configured by closing. Reference numerals 32 and 33 are punched portions formed on the end plates 30 and 31, and the circumferential edges are thinned by providing grooves 34 and 35 on the circumferential edges for easy punching. Further, the punched parts 32, 33 are arranged so as to be located on the end surface of the activated carbon part 29.

When the used filter 26 is discarded, the punching parts 32 and 33 are punched with a tool such as a screwdriver as shown in FIG. 6, and the activated carbon 28 is taken out from the filter 26.
Collect solvent individually before final disposal.

Therefore, the activated carbon 28 does not hinder the solvent recovery work of the filter paper portion 27.

By the way, this dry cleaner uses CPU, RO
It is controlled by a microcomputer (hereinafter, microcomputer) 36 including M, RAM and I / O, and its control block diagram is shown in FIG. That is, the microcomputer 36 inputs the concentration signal from the soap concentration detector 10, the flow rate signal from the flow rate sensor 11, and the liquid level detection signal from the liquid level detection means 22.
Signals such as soap concentration, liquid level, cleaning method, and operating time are input from various setting devices 37. Then, the microcomputer 36 outputs an operation signal to each load in accordance with these input signals, a reference signal stored in advance, and a program to control the operation.

For this purpose, the microcomputer 36 constitutes a flow rate comparison unit 38, a liquid supply counter 39, a liquid level comparison unit 40, a calculation unit 41, a method determination unit 42, a soap charging counter 43, a predetermined time counter 44, and an operating time counter 45. .

Next, the operation will be described with reference to the flowchart of FIG. 2. First, various setting devices 37 are operated to set a desired time method and the like, and the start key is operated. Then, the microcomputer 36
Rotates the drum in the washing tank 12, and the main valve 4, distillation valve 14,
Filter valve 7, circulation valve 13, drainage valve 18 and soap outlet valve
25 is closed, the main valve 3, the bypass valve 16 and the liquid supply valve 9 are opened,
The pump 5 is driven to supply the solvent in the first tank 1 into the cleaning tank 12.

At the start of this liquid supply, the microcomputer 36 sets the flow rate value to the standard value (70 l /
Minutes) and above are compared by the flow rate comparison unit 38, and if there is an output from the comparison unit, the liquid supply counter 39 measures the time, and the concentration measured by the soap concentration detector 10 is input.

Thus, with the progress of the liquid supply, the microcomputer 36, when the coincidence of the liquid level detection signal and the set liquid level is obtained as the output of the liquid level comparison unit 40, the timing content of the liquid supply counter 39 at that time, the set concentration, and Based on the measured concentration and various coefficients (K), the calculation unit 41 executes a calculation of soap supply time = K × liquid supply time × (set concentration−measured concentration) to determine the soap supply time.

At the same time, the microcomputer 36 determines by the method determination unit 42 whether the set cleaning method is batch or filter circulation,
In either method, the main valve 3 is closed, the drain valve 18 is opened, and the soap outlet valve 25 is opened. That is, the filter bypass is circulated. The soap is introduced from the tank 23 into the main flow path by the suction force of the pump 5 or the ejector effect and is mixed with the solvent.

The soap feeding time calculated earlier is the soap feeding counter.
Computed by 43, and when completed, the microcomputer 36 closes the soap outlet valve 25, and from this closing, a predetermined time counter 44 causes a predetermined time (for example, 30 seconds) to be counted, during which the soap is evenly mixed with the solvent. And this counter
When 44 has finished counting, in the batch washing, the liquid supply valve 9 and the drainage valve 18 are closed and the pump 5 is stopped. In the filter circulation washing, the bypass valve 16 is closed and the filter valve 7 is closed. It is opened and the pump 5 is continuously operated.

In any of the cleaning methods, the microcomputer 36 thereafter performs the cleaning work until the operation time counter 45 ends, and when the cleaning time ends, moves to the next step, for example, the second bath (rinse).

The soap concentration may be measured and compared at predetermined time intervals to control the opening / closing of the outlet valve 25 to maintain the set concentration.

Further, as shown in FIG. 7, an auxiliary pump (46) for promoting the outflow of soap may be provided between the soap outlet valve 25 and the soap tank 23, and further, the soap tank 23
The outlet may be connected to the discharge side of the pump 5.

FIG. 8 shows an experimental measurement of the soap dissolution rate in the structure of the present invention and the conventional structure. As is clear from the figure, in the structure of the present invention, the soap is injected into the solvent flow path. Therefore, it can be seen that the soap dissolves quickly and the soap concentration stabilizes quickly.

(G) Effect of the Invention According to the dry cleaner of the present invention, the solvent supplied to the cleaning tank is separated from the cleaning tank by closing the main valve to close the solvent passage and the cleaning tank. The soap outlet valve is opened to mix the soap in the soap tank with the solvent by the pump force, and the cleaning operation is performed in this soap mixed state. Does not touch the clothing directly,
It is possible to suppress color fringing on clothes.

Further, it is not necessary to separately provide a dedicated pump to mix the soap with the solvent, and the structure of the dry cleaner can be simplified.

Furthermore, the soap does not mix with all the solvent in the solvent tank, but mixes only with the solvent supplied from the solvent tank to the cleaning tank, and therefore unnecessary consumption of the soap can be suppressed. .

[Brief description of drawings]

FIG. 1 is a control block diagram of a dry cleaner according to the present invention, FIG. 2 is a flow chart, FIG. 3 is a piping system diagram, FIG. 4 is a plan view in which a main part of a filter can be broken, and FIG. 6, FIG. 6 is an explanatory view of the same operation, FIG. 7 is an enlarged view of a main part showing another embodiment, and FIG. 8 is a comparative characteristic diagram with a conventional one. 5 ... Pump, 23 ... Soap tank, 24 ... Soap supply passage, 25 ... Soap outlet valve.

Claims (1)

[Scope of utility model registration request] 1. A cleaning tank, a solvent tank for storing a solvent, which is connected to a solvent flow path outside the cleaning tank via a main valve, and a solvent in the solvent tank when the main valve is open. While supplying into the cleaning tank through the solvent flow path, in the closed state of the main valve, a pump that circulates the solvent supplied into the cleaning tank between the solvent flow path and the cleaning tank, A soap tank, a soap supply passage that connects the soap tank to the solvent flow passage, a soap outlet valve that opens and closes the soap supply passage, and in the case of the solvent circulation by the pump, in the soap tank due to the pump force. In order to mix the soap with the solvent, an outlet valve opening part for opening the soap outlet valve and a cleaning operation part for performing a cleaning operation in a state where the soap is mixed with the solvent are provided. Over Na.