JPS6133280A - Steam washer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a steam cleaning device that evaporates a solvent solution and thereby cleans cleaning items such as mechanical parts, and in particular, relates to a steam cleaning device that uses a heat pump to evaporate a solvent solution and use this to clean cleaning objects such as mechanical parts. This paper relates to improvements to steam cleaning equipment.

(Prior art) Generally, a steam cleaning device using a heat pump is
The structure shown in FIG. 3 is known.

That is, this steam cleaning device has a storage section 19 below which stores a solvent solution, a cleaning tank 21 having a washing section 20 above it, a compressor 22, and a heat exchanger 2 for heating the solvent solution.
3. It consists of a heat pump equipped with an expansion valve 24 and a heat exchanger 25 for condensing solvent vapor.
5 are arranged in the cleaning section 20, respectively. Furthermore, 2
6 is an electric heater for starting, and 27 is an ultrasonic oscillator.

When the refrigerant gas compressed by the compressor 22 to a high pressure and high temperature is led to the heat exchanger 23 for heating the solvent solution, the solvent solution is heated and evaporated, and is turned into steam and sent to the cleaning section 20. Supplied. The solvent vapor supplied to the cleaning section 20 condenses on the surface of the object to be cleaned, such as mechanical parts, which is introduced into the cleaning section 20, and performs a cleaning action while flowing down.

Also, extra 3E! The solvent vapor of I is transferred to heat exchanger 2 for condensing solvent vapor.
5, it is liquefied and flows down to the storage section 19, where it is reused.

On the other hand, in the heat pump, the solvent 1 is supplied from the compressed rock 22.
The low-pressure, low-temperature refrigerant gas that has passed through the night heating heat exchanger 23 and the expansion valve 24 is heated and evaporated by the heat of condensation of the solvent vapor in the solvent vapor condensing heat exchanger 25, and returns to the compressor 22, where it is returned to the compressor 22 and is then evaporated. Repeat the cycle.

However, in the steam cleaning apparatus, the depth of the solvent liquid is shallow, and the starting electric heater 26, ultrasonic oscillator 27, etc. are provided in the storage section 19, so the heat exchanger 23 for heating the solvent liquid is disposed.
However, there is a problem in that the desired heating capacity cannot be obtained due to restrictions on the dimensions and structure. Another problem is that it is difficult to clean the inside of the heat exchanger 23 for heating the solvent solution and the cleaning tank 21, and to perform maintenance and inspection of the heat exchanger 23 and the like for heating the solvent solution.

(Problems to be Solved by the Invention) The present invention was devised to solve the above-mentioned problems, and its purpose is to make the parts of the device free from restrictions on dimensions, etc. Another object of the present invention is to provide a steam cleaning device that allows cleaning, maintenance and inspection, etc. to be performed extremely easily.

(Means for Solving the Problems) A steam cleaning device of the present invention includes a cleaning section having a storage section below which stores a solvent solution, and a cleaning section above which a solvent vapor layer is formed; A unit type heat pump installed outside the cleaning tank, a cooling pipe installed in the cleaning section of the cleaning tank, and a cooling heat transfer tube installed inside the evaporator of the heat pump and connected to the cooling pipe. , a circulation pump interposed between the cooling pipe and the cooling heat transfer tube, a heating heat transfer tube installed in the condenser of the heat pump and connected to the storage section of the cleaning tank, and the storage section and the heating transfer tube. The feature is that it consists of a solvent circulation pump interposed between the heat pipe and the heat pipe.

(Function) The solvent liquid guided to the heating heat transfer tube by the solvent liquid circulation pump is heated to boiling point by the high temperature condensation heat in the heat pump's condenser, and then discharged to the storage section, where it is turned into steam and sent to the cleaning section. Supplied.

The solvent vapor supplied to the cleaning section performs a cleaning action while condensing on the surface of the object to be cleaned, such as high-temperature parts, placed in the cleaning section and flowing down.

On the other hand, excess solvent vapor is liquefied in the cooling pipe by supplying cold water obtained from the evaporator of the heat pump to the cooling pipe using the circulation pump, flows down to the storage section, and is reused.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

FIG. 1 is a schematic system diagram of a steam cleaning apparatus showing a first embodiment of the present invention, in which 1 is a cleaning tank, 2 is a heat pump, 3 is a cooling pipe, 4 is a cooling heat exchanger tube, and 5 is a ring. 6 is a heating heat exchanger tube, and 7 is a solvent circulation pump.

The cleaning tank 1 has a chamber pipe 8 for storing a solvent liquid below, and a cleaning section 9 above which a solvent vapor layer is formed. A sound wave oscillator 11 is provided respectively. In addition, 12 is an inlet for cleaning material.

The heat pump 2 is composed of a pressure pump 13, a condenser 14, an expansion valve 15, an evaporator 16, a heat exchanger 17, etc., and is arranged as a unit outside the cleaning tank 1.

A cooling pipe 3 is disposed in the cleaning section 9 of the cleaning tank 1, and both ends thereof are connected to a cooling heat transfer tube 4 provided in the evaporator 16 of the heat pump 2 by cold water piping.

Further, a circulation pump 5 and a water tank 18 are interposed between the cooling pipe 3 and the cooling heat transfer tube 4, respectively.

A heating heat exchanger tube 6 provided in the condenser 14 of the heat pump 2 is connected to the storage section 8 of the cleaning tank 1 by a solvent liquid piping, and a solvent is connected between the storage section 8 and the heating heat exchanger tube 6. A liquid circulation pump 7 is provided.The solvent liquid in the storage section 8 is guided to the heating heat transfer tube 6 by the solvent liquid circulation pump 7, and the high temperature condensation heat is generated in the condenser 14 of the heat pump 2. After being heated and boiled, it is discharged into the storage section 8, and is supplied to the cleaning section 9 as steam.

The solvent vapor supplied to the cleaning section 9 condenses directly on the surface of the object to be cleaned, such as mechanical parts, which is put into the cleaning section 9, and performs a cleaning action while flowing down.

Further, the water led to the cooling pipe 4 is cooled by the heat of vaporization in the evaporator 16 of the heat pump 2, and stored in the water tank 18. The cold water stored in the water tank 18 is
When the excess solvent vapor is supplied to the cooling pipe 3 by the R pump 5, it is liquefied in the cooling pipe 3 and flows down to the storage section 8.
Reused.

On the other hand, in the heat pump 2, the high-pressure and high-temperature refrigerant compressed by the compressor 13 is discharged into a heat dissipating liquid in the condenser 14.
It passes through the heat exchanger 17, is reduced in pressure by the expansion valve 15, enters the evaporator 16, is evaporated there, passes through the heat exchanger 17 again, enters the compressor 13, and repeats the above-described cycle.

FIG. 2 shows a steam cleaning apparatus according to a second embodiment of the present invention, which consists of two cleaning tanks 1 and one heat pump 2, etc., and the one heat pump 2 heats the solvent liquid and removes the solvent. It is configured to condense steam. Therefore, with this steam cleaning device, equipment costs can be reduced. Incidentally, the cleaning tanks 1 may be installed in a king-sized or larger number.

(Effects of the Invention) As described above, the steam cleaning device of the present invention includes a unit type heat pump installed outside the cleaning tank, and after the solvent solution in the cleaning tank is guided to the condenser of the heat pump and heated, Because it is configured to return to the cleaning tank, unlike conventional steam cleaning equipment, there is no need to install a heat exchanger for heating the solvent inside the cleaning tank, which has size restrictions, and the size and structure of the condenser can be changed. Accordingly, the dimensions and structure of the heat exchanger tube for heating the solvent liquid can be freely selected, and the desired heating capacity etc. can be obtained.

In addition, cleaning the inside of the cleaning tank is extremely easy, and cleaning and inspection of the heat transfer surface of the condenser can be done by closing the stop valve in the piping without draining the solvent inside the cleaning tank. This can be easily done by

Furthermore, when combining a heat pump with a cleaning tank of different size and structure, if the heating capacity, heating temperature, etc. required for the cleaning tank are the same, the heat pump can be combined as a unit with the same specifications; The connection between the cleaning tank and the heat pump is water and solvent-based at atmospheric pressure, and piping is extremely easy.

However, since heat pumps are unitized, the pressure-generating refrigerant piping can be shortened.

[Brief explanation of drawings]

FIG. 1 is a schematic system diagram of a steam cleaning device showing the first embodiment of the present invention, FIG. 2 is a schematic system diagram of a steam cleaning device showing a second embodiment of the invention, and FIG. 3 is a conventional steam cleaning system. It is a schematic system diagram of an apparatus. 1 is a cleaning tank, 2 is a heat pump, 3 is a cooling pipe, 4 is a heat exchanger tube for cooling, 5 is a circulation pump, 6 is a heat exchanger tube for heating, 7 is a solvent circulation pump, 8 is a storage part, 9 is a washing part, 14 is a condenser, and 16 is an evaporator. Patent applicant Masanobu Shigaki, Representative of Takuma Research Institute Co., Ltd.

Claims (1)

[Claims] It has a storage section (8) for storing the solvent solution below, and
A cleaning tank (1) equipped with a cleaning section (9) in which a solvent vapor layer is formed above the cleaning tank (1), a unit type heat pump (2) disposed outside the cleaning tank (1), and a cleaning tank (1) equipped with a cleaning section (9) in which a solvent vapor layer is formed. ) and the cooling pipe (3) installed in the cleaning section (9) of the heat pump (
A cooling heat exchanger tube (4) provided in the evaporator (16) of 2) and connected to the cooling pipe (3), and a cooling heat exchanger tube (4) interposed between the cooling pipe (3) and the cooling heat exchanger tube (4). a circulation pump (5),
A heating heat transfer tube (
6); and a solvent liquid circulation pump (7) interposed between the storage section (8) and the heating electric heating tube (6).