JPH0791884A - Cleaning device for air conditioner of vehicle - Google Patents

Abstract

PURPOSE:To enable an efficient cleaning of an air conditioner by a method wherein a suction device is arranged at one surface of a heat exchanger so as to perform a powerful sucking action and concurrently a discharging nozzle having a nozzle cover is arranged at the other surface of the heat exchanger so as to blow fluid of high pressure. CONSTITUTION:An air conditioner 2 installed on a roof of a railway vehicle has a condensing heat exchanger 3a and an evaporating heat exchanger 3b. If dust accumulates in these heat exchangers during use of long period of time, an air conditioning function is reduced. In view of this fact, in the case that these heat exchangers 3 (3a, 3b) are cleaned, suction covers 5a, 5b are press contacted with the upper surface of each of the heat exchangers 3, and then suction force is applied through a suction hose 4 by a suction device 7, a dust collector 8 and an air cleaner 9 within a main body 6 of the cleaning device. And concurrently, air, water, vapor and chemical liquid under their high pressure fed from a high compressing device 10 through a forced feeding hose 11 are properly selected through a discharging nozzle 13 having a nozzle cover fixed thereto and blown so as to perform a cleaning operation under a synergic action of suction and high pressure blowing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to cleaning and maintenance of indoor and outdoor heat exchangers (evaporator and condenser) mounted inside an air conditioner mounted on a railway vehicle.

[0002]

2. Description of the Related Art Conventionally, in the work environment due to dust scattering, the air conditioner main body is once removed from the vehicle mounting part, transported to a cleaning exclusive booth installed at another place, and in a stationary state,
This is a cleaning method in which high-pressure steam or air is blown directly from one surface of the heat exchanger to blow off the attached dust, and the dust collected by the boot is used to treat the scattered dust.

That is, FIG. 3 shows a conventional cleaning work state in which the air conditioner a is removed from the vehicle and a dedicated cleaning boot is installed.
The air or steam that has been carried into the space b and sent through the pressure-feeding hose c is blown onto the outer surfaces of the heat exchangers e and f with the hand nozzle d to remove dust attached to these heat exchangers e and f. The dust is blown off and collected by a dust collecting device g attached to the boot b.

In the conventional cleaning means, as described above, first, the air conditioner a, which is a long and heavy object, is removed from the vehicle and conveyed to a cleaning-only booth b provided at another place, and then high-pressure steam or air. Since the dust is blown away from one direction of the heat exchangers e and f, there is a problem in the dust removal effect inside the narrow heat exchangers e and f, and there is a long-term problem such as scattered dust and moisture treatment in the case of steam. Since a large amount of cost and equipment were required along with the desorption work and the transportation work of heavy objects, an urgent and fundamental improvement was urgently desired.

This invention intends to solve the problems of the cleaning work in the existing state (the condition in which the device is mounted on the vehicle, therefore, it is not necessary to attach and detach the device and carry it), and the problem of improving the dust removal effect. To do.

[0006]

That is, the present invention is
From one side of the heat exchanger, through a suction cover and suction hose, a suction device performs a strong suction action, and at the same time,
By selectively injecting high-pressure air, water, steam, chemicals, and other fluids from a high-compression device through the discharge nozzle with a nozzle cover and a pressure-feeding hose from the other side of the heat exchanger. , The dust accumulated in the narrow heat exchanger is surely removed without scattering to the outside to improve the cleaning effect, and these are made into a compact device to enable the work in the existing state. The present invention proposes a vehicle air conditioner cleaning device.

[0007]

The air conditioner cleaning device for a vehicle of the present invention having the above-described structure does not require a great deal of expense and equipment as in the prior art when cleaning and maintaining the air conditioner, and it is in a narrow heat exchanger in the existing state. It is possible to reliably remove the dust accumulated on the surface, and to improve the working environment and the cleaning effect by eliminating the dust scattering.

[0008]

The present invention will now be described in detail with reference to the illustrated embodiments. In FIG. 1, reference numeral 1 denotes a railroad vehicle, and a heat exchanger 3a for condensing a circulating refrigerant and a heat exchanger 3b for evaporating the refrigerant are installed inside an air conditioner 2 mounted on a roof thereof, both of which are long-term. Heat exchanger 3 during use
Debris accumulates on the heat exchange parts a and 3b and deteriorates the air conditioning function, so periodic cleaning maintenance is required.

In the present invention, the heat exchangers 3a, 3
The suction covers 5a and 5b are pressed against the upper surface of the suction h
Through a suction device 7, a dust collector 8 and an air purifier 9 in a cleaning device body 6 separately provided via the nozzles, and at the same time, the nozzles are provided on the lower surfaces of the heat exchangers 3a and 3b. High pressure air, water, steam, chemical liquid, etc. sent from the high compression device 10 in the device body 6 through the discharge nozzle 13 having the cover 14 attached thereto, through the pressure feed hose 11 and the hand operation pipe 12. The fluid is selected and blown, and the synergistic effect of the suction action and the high-pressure blowing action enables reliable and highly effective cleaning.

FIG. 2 is an enlarged view showing a cleaning state of the heat exchangers 3a and 3b shown in FIG. 1, in which the suction cover 5a pressed against the upper surfaces of the heat exchangers 3a and 3b has a cover body 5a ₁ and a pressure contact opening. Ring-shaped press-fitting packing 5 attached to the outer periphery of the part
a ₂ and is in contact with the upper surface of the heat exchanger 3a during the cleaning work in order to enhance the suction effect. On the other hand, high pressure air from the lower surface of the heat exchanger 3a,
Discharge nozzle 13 that selectively discharges fluids such as water, steam, and chemicals
A bowl-shaped nozzle cover 14 was attached around the nozzle so as to be in close contact with the spray surface to enhance the spray effect and at the same time prevent dust scattering.

[0011]

According to the air conditioner cleaning device for a vehicle of the present invention having the above-described structure, it is not necessary to detach the air conditioner of a long and heavy object from the vehicle and transport it to another place. This makes it possible to remove dust reliably without damaging the working environment in the visible state.

[Brief description of drawings]

FIG. 1 is a diagram showing a relationship between a cleaning device of the present invention and a vehicle air conditioner mounted on a vehicle roof.

FIG. 2 is an enlarged view showing a cleaning state of a heat exchanger by the cleaning device of the present invention.

FIG. 3 is a diagram showing a cleaning state of an air conditioner according to a conventional technique.

[Explanation of symbols]

1 railway vehicle 2 air conditioner body 3a, 3b heat exchanger 4 suction hose 5a, 5b suction cover 5a ₁ cover body 5a ₂ pressure contact packing 6 device body 7 suction device 8 dust collector 9 air purifier 10 high compression device 11 Hose for pressure feeding 12 Hand operation tube 13 Discharge nozzle 14 Nozzle cover

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kunihiko Kodama, No. 1 Kamariya-cho, Kanazawa-ku, Yokohama-shi, Kanagawa Stock Company, Tokyu Vehicle Research Institute (72) Kazuo Ihara, No. 1 Kamariya-cho, Kanazawa-ku, Yokohama, Kanagawa Company Tokyu Vehicle Research Institute

Claims (2)

[Claims] 1. A cleaning device in which a suction cover is mounted on one surface of a heat exchanger installed in a vehicle air conditioner, and a suction hose connected to the suction cover is separately provided. The suction device in the main body sucks the dust accumulated in the heat exchanger and at the same time generates a negative pressure in the air flow, thereby forming a discharge nozzle having a nozzle cover attached to the other surface of the heat exchanger. On the other hand, a high-pressure fluid is pressure-fed from the high-compression device in the cleaning device main body through a pressure-feeding hose to be discharged toward the heat exchanger, and the heat exchanger has a synergistic effect of the suction action and the discharge action. A vehicle air conditioner cleaning device, characterized in that it is adapted to remove dust inside. 2. The apparatus according to claim 1, wherein a suction and discharge means attached to a suction cover and a nozzle cover, a cleaning device body in which a suction device and a high compression device are integrated, a suction hose, and A vehicle air conditioner cleaning device, characterized in that it is configured with a discharge hose.