JP3133567B2 - Dry cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dry cleaner having a plurality of lines for supplying a solvent from a tank to a drum between a tank for storing a solvent for washing and a drum for storing clothes.

[0002]

2. Description of the Prior Art Various types of dry cleaners of this type have been proposed in the prior art. Japanese Patent Publication No. 44558/1990 discloses that a required amount of a cleaning solvent is supplied from a built-in tank through a liquid supply line by a pump. For supplying the drum to the drum side.

[0003]

Those with two systems as a INVENTION Problems to be Solved] However the supply conduit of the solvent from the inability to rapidly solvent supply the supply line of size 1 with the strains of recent drum into practical use ing. When such two solvent supply lines are provided, a pressure sensor, a pump, and the like must be provided in each of the lines in order to accurately detect the flow rate, which inevitably leads to an increase in cost. There was a problem. The present invention has been made in view of such circumstances, and an object of the present invention is to provide a dry cleaner capable of accurately detecting the solvent flow rates of a plurality of systems by a single pressure sensor and suppressing cost increase. is there.

[0004]

Dry cleaner according to the present invention SUMMARY OF THE INVENTION may, accommodates clothes, a drum solvent for washing is supplied, a tank containing the solvent for the cleaning,
In a dry cleaner having a plurality of pipelines for supplying a solvent from the tank to the drum side, a branch pipeline provided in each of the plurality of pipelines and a switching valve interposed between the branch pipelines and selectively provided. a pressure sensor to be connected to said and a calculation unit for obtaining the solvent total flow from the tank by adding the detected value of the pressure sensor when led respective conduits each solvent to a pressure sensor to the drum side It is characterized by having.

[0005]

This [action] The present invention is precisely detectable and becomes a solvent flow rate of each of the plurality of conduits each in a single pressure sensor, pressure
The number of force sensors can be reduced.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the drawings showing the embodiments. FIG. 1 is a diagram showing a piping system for a solvent of a dry cleaner according to the present invention.
Rotatably housed within, it accommodates a clothes, washing
Drums solvent for purification is supplied, 3 denotes a tank for the solvent. The outer tub 1 has an air inlet 1a on the upper wall, and outlets 1b and 1c on one side wall and the lower wall, respectively.
One end of each of ducts 4a, 4b, 4c forming an air circulation path is connected to the inlet 1a and the outlets 1b, 1c, respectively. duct
The other end of each of 4b and 4c is connected to the other end of duct 4a. The water is supplied into the outer tank 1. Ducts 4b and 4c are provided with blowers 5 and 6, respectively, and duct 4a is provided with two coolers 7 and
8, a burner 9 and a heater 10 are interposed. The circulating air is cooled by coolers 7 and 8 as needed, and is heated by the burner 9 and the heater 10.

[0007] A solvent recovery port 1d is provided on the bottom wall of the outer tub 1, and the solvent recovery port 1d has a height substantially equal to that of the solvent recovery port 1d for removing waste such as buttons and lint. A filter 11 to be removed is connected. Filter 11 is provided with a liquid level float switch SW, also the conduit 12 connected to the outlet is 2 branches the conduit L _1, L ₂ in the middle, Kakukanro L _1,
L ₂ drain valve V ₁₁ in the middle, V _21, solvent pump P _1,
P ₂ , filters F ₁ , F ₂ , and liquid supply valves V ₁₂ , V ₂₂ are interposed, and the terminals are introduced into the outer tank 1. Incidentally solvent cooler 13 between the conduit L ₁ and filter F ₁ and liquid supply valve V ₁₂ to another, the solvent heater 14 is Yes and interposed, as solvent and cooled as needed, or heated Has become.

The _two pipes L ₁ and L ₂ are pipes in which intermediate portions between the solvent pumps P ₁ and P ₂ and the drain valves V ₁₁ and V ₂₁ have tank outlet valves V ₁₃ and V ₂₃ interposed therebetween. Is connected to the tank 3 and the solvent pumps P ₁ , P ₂ and the filters F ₁ ,
An intermediate portion between the F ₂ is also connected to the tank 3 at is interposed a tank inlet valve V _14, V ₂₄ line.

The pipe line L ₁ has a point A of the branch pipe downstream of the solvent heater 14, and the pipe L ₂ has a point B of the branch pipe downstream of the filter F ₂ . by interposing a three-way valve 15 and the pressure sensor SE via line L _1,
It is selectively connectable arranged relative L _2. As a <br/> other 21, 22 coolers 7, 8 and feeding and discharging system of the cooling water in the solvent cooler 13, 23 is a heater 10, a steam supply and discharge system for a solvent heater 14.

FIG. 2 is a block diagram showing a main control system according to the present invention, in which 31 is a microcomputer, 32, 3
3 is an input / output control circuit. The input / output control circuit 32 includes a display device 34 for displaying the set contents and other set times, a pressure sensor SE for detecting the flow rate of the solvent in the pipes L ₁ and L ₂ , and a keyboard 35. driving motor M of the drum 2, solvent pump P _1, P _2, blower 5,6, liquid supply valve V _12, V _22, drain valve V _11, V _21, the tank inlet valve V _14, V
_24, the tank outlet valve V _13, V _23, the liquid level float switch S
The control units such as W and the three-way switching valve 15 are connected.

Next, the operation of the dry cleaner according to the present invention will be described with reference to the flow charts shown in FIGS. Close the drain valve V _11, V _21, and drives the pump P _1, P ₂ (step S1), the tank outlet valve V _13, V _23, open the liquid supply valve V _12, V ₂₂ (step S2), the tube road L _1, L ₂
The through supplies solvent in the tank 3 a filter F _1, F ₂ Te through to <br/> to the drum 2 side. Forward the drum 2 at a low speed at predetermined time intervals by repeated reversed (step S3), and starts a subtraction from the hand setting time T ₁ to the timer over. (Step S4).

As a result, the solvent is applied to the clothes, and the washing of the clothes in the drum 1 is started. During this time by energizing the three-way switching valve 15 first pipe L ₁ connected to the pressure sensor SE (step S5), and detects the solvent pressure in line L _1,
At the pressure sensor SE calculating means is connected to the detected solvent pressure in terms of solvent flow rate to calculate the flow rate A _V of the point A (step S6). A liquid level float switch determines whether the liquid level in the outer tank 1 has reached a preset liquid level.
Determined by comparing the detected liquid level of the SW (step S7), and close the tank outlet valve V _13, V ₂₃ when it reaches the liquid level set, open the drain valve V _11, V _21, step Go to S21. Here, the set liquid level is a solvent level required to dry-clean a predetermined amount of clothing at a time, and is experimentally predetermined.

On the other hand, if it is determined in step S7 that the liquid level has not reached the set level, it is determined whether five seconds have elapsed after the start of energization of the three-way switching valve 15 (step S9). Returning to step S7, if the time has elapsed, the power supply to the three-way switching valve 15 is cut off (step S10). This point of the pipe L ₂ B is connected to the pressure sensor SE, detects the solvent pressure at point B, the flow rate B _V is calculated by the calculation means (not shown) in the same manner (step S1
1).

The total flow rate X (= A) of the flow rate A _V and the flow rate B _V
(V + B _V ) is calculated (step S12), and based on the detected liquid level of the liquid level float switch SW, it is determined whether or not the solvent level in the outer tank 1 has reached a set liquid level (step S13). close the tank outlet valve V _13, V ₂₃ If it is judged in liquid level, to open the drain valve V _11, V _21, proceeds non to step S16.

On the other hand, if it is determined in step S13 that the liquid level has not reached the set level, it is determined whether 55 seconds have elapsed since the three-way switching valve 15 was turned off (step S13).
S15), if not, return to step S12, and
If has elapsed 55 seconds returns to step S5, the process described above
Is repeated. When returning to step S5, the
After the flow rate _AV is detected in step S6, if the set liquid level is detected in the determination in step S7 described above,
Close the click outlet valve V _13, V _23, also a drain valve V _11, V ₂₁ open
Come, the process proceeds to step S21, the three-way switching valve 15, and the non-conductive state (step S21), and detects the flow rate B _V of the conduit L ₂
(Step S22).

The total flow rate X = A _V + B of the flow rates A _V and B _V
V is calculated (step S23), and the flow rate key (flow rate X
Key) to determine whether an operation has been performed (step S2
4) If the flow key operation has been performed, the total flow X is displayed on the display device 34 (step S26). If no operation has been performed, it is immediately determined whether or not the set time T ₁ = 0 (step S26).
S25), if the set time is T ₁ ≠ 0, it is determined whether or not 55 seconds have elapsed after the three-way switching valve 15 has not been energized (step S2).
7) If 55 seconds have not elapsed, return to step S23,
If 55 seconds have elapsed, the process returns to step S16.

[0017] performs the power supply to the three-way switching valve 15 in step S16, detects the flow rate A _V in line L ₁ (step S17), and determines whether or not the set time T ₁ = 0 (step
S18). If T ₁ ≠ 0, it is determined whether 5 seconds have elapsed after energization of the three-way switching valve 15 (step S19). If not, the process returns to step S18. If 5 seconds have elapsed, the process returns to step S18. Go to S21. Meanwhile drain valve V ₁₁ in the case of T ₁ = 0 is determined in step S18, V _21, liquid supply valve V
_12, the V ₂₂ respectively to close and the solvent pump P _1, P ₂ is stopped (step S20), and ends the washing process.

Thereafter, a liquid removal process is performed (step S2).
8), a drying process is performed (step S29), and the operation is terminated. It is determined whether or not there has been a flow key operation (step S3
0), the total flow rate X is displayed (step S31).

In the above-described embodiment, the case where the flow rate detection time for the pipelines L ₁ and L _{2 is set} to 5 seconds and 55 seconds is described. However, the present invention is not particularly limited. Good, but if you shorten the time, a three-way switching valve
Frequent current supply and cut-off to and from the 15 control units are repeated, which may increase the number of operations and affect the life, which is not preferable.

[0020]

As described above, in the dry cleaner according to the present invention, even when there are a plurality of supply pipes for the solvent, a single pressure sensor and a switch for connecting each of the pipes and the pressure sensor are provided. by combining a valve, or the like can accurately detect the supply amount of the by Ri溶 agents to a single pressure sensor <br/> Sa, part <br/> product cost can be reduced, the present invention is It has excellent effects.

[Brief description of the drawings]

FIG. 1 is a piping diagram showing a solvent supply and circulation system of a dry cleaner according to the present invention.

FIG. 2 is a block diagram showing a main control system of the dry cleaner according to the present invention.

FIG. 3 is a flowchart showing a process of detecting a solvent flow rate of the dry cleaner according to the present invention.

FIG. 4 is a flowchart showing a process of detecting a solvent flow rate of the dry cleaner according to the present invention.

[Explanation of symbols]

1 the outer tub 2 drum 3 solvent tanks 4a, 4b, 4c ducts 5,6 blower 7,8 cooler 9 burner 10 heater 11 strainer 15 three-way valve SE pressure sensor SW liquid level float switch P _1, P ₂ pump L ₁ , L ₂ pipeline

Claims (1)

(57) [Claims] 1. A accommodates clothes, a drum solvent for washing is supplied, a tank containing the solvent for the washing, and a plurality of conduits for supplying the solvent to the drum side of the tank In the provided dry cleaner, a branch pipeline provided in each of the plurality of pipelines, a pressure sensor that is selectively connected to each branch pipeline via a switching valve,
And characterized by comprising an arithmetic unit for obtaining the solvent total flow rate of each pipe respectively solvent from the tank by adding the detected value of the pressure cell <br/> capacitors when led to the pressure sensor to the drum side Dry cleaner.