JPS6388091A - Washer - Google Patents

Abstract

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

Description

[Detailed Description of the Invention] <Industrial Application Field> This invention cleans the interior of a ceiling-mounted air conditioner/heater, such as a ceiling-embedded type or a ceiling-suspended type, by spraying a cleaning liquid from a cleaning nozzle. This invention relates to a cleaning device suitable for cleaning machines.

<Prior Art> As shown in Figure 4, the indoor unit l of the ceiling-mounted air conditioner/heater has a meandering conduit through which refrigerant liquid flows, and a large number of fins attached to the conduit at small intervals in the front and back direction. A unit consisting of , commonly known as an air fin, is placed in contact from below with a heat insulating material 4 laid on the top surface of a recess 3 with an open bottom surface in the ceiling 2, and normally two units on the left and right are placed inside the recess, with the front and rear ends supported. A fan 5, which is similarly suspended and supported between the left and right air fins, sucks indoor air and blows it to the left and right air fins 1.1, blowing the air between the fins of each air fin. By contacting and flowing, heat is exchanged, the temperature of the air is lowered (or raised), and the air is circulated indoors again.

Immediately below each air fin 1.1, a drain receiver 6 is provided to receive condensed water generated when air contacts the fins and exchanges heat.
It is removably closed by a cover 9 having an indoor air intake lower and an indoor air outlet 8 for air whose temperature has been lowered (or raised) by heat exchange.

For example, after using this F-Fin for several years, the gaps between the fins become clogged with dirt, oil, etc., and the efficiency decreases, so it is necessary to perform cleaning every few years to remove the dirt, etc. that gets stuck in the gaps between the fins. be.

If this cleaning is done by spraying the cleaning solution onto the air fins while the air fins are installed on the ceiling, the cleaning solution may scatter and stain the floor or desk, get on the worker's face, or seep into the ceiling. In practice, it is difficult to enforce this, so conventionally the refrigerant is removed.
The piping was cut and the air fins were lowered down.

<Problems to be solved by the invention> However, in this case, it is necessary to lift the pipe into the recess in the ceiling after washing R11 and connect the pipes again to their original state.
Cleaning required a lot of effort.

<Means for Solving the Problems> Therefore, the present invention provides a cleaning device suitable for cleaning an indoor unit of a ceiling-mounted air conditioner/heater, such as a ceiling-embedded type or a ceiling-suspended type, while it is installed on the ceiling. The pump has a cleaning liquid storage tank, a pump having a suction port connected to the tank and a cleaning nozzle connected to a discharge port, and a cleaning waste water suction nozzle having one end connected to the storage tank, and the discharge pressure of the pump is The storage tank is characterized in that the inside of the storage tank is brought to a negative pressure, and the washing waste water from washing the object to be washed by the washing nozzle is sucked into the storage tank by the suction nozzle and circulated.

<Embodiment> In the illustrated embodiment, 11 is a cleaning liquid storage tank;
2 is a pump, 13 is a cleaning nozzle, 14 is a suction nozzle, and the storage tank 11. The pump 12 and its drive motor (not shown) are mounted on a cart +5 that can be moved freely by wheels, and the drain at the bottom of the storage tank 11 is connected to the suction port of the pump 12 by piping, and the drain port is connected to the pump discharge port by piping. The liquid supply port +2' with a continuous on-off valve and the cleaning nozzle 13 are each a flexible hose 16 with one-touch joints at both ends.
It is connected.

The cleaning nozzle 13 is made of two thin stainless steel plates 17a and 17 of the same size, each having a downwardly extending piece bent at a right angle.
b are stacked one on top of the other with thin wire or stainless steel strips 18 sandwiched between the peripheral edges, and the peripheral edges are welded in series to close them,
This allows the wire 18 to form a flat liquid supply space 17 between the two plates.
form. The thin plate 17b below this has fine injection holes 13.
A supply pipe 19 bent at a right angle at the upper end leading to the liquid supply space 17 is attached to the extension piece of the overlying thin plate 17b, which also serves as a handle, and serves as a handle for the flexible hose I6. One end is connected to the lower end of the supply pipe 19 with a one-touch joint.

The cleaning nozzle 13 has a horizontal portion 13a having an injection hole 13' inserted between the upper surface of the air fin and the insulation material 4 by compressing the insulation material, and operating the pump 12 to clean the fluid supplied to the liquid supply space 17. This is for cleaning by spraying liquid downward from the injection hole 13' into the gaps between the air fins.
During cleaning, the downward vertical section 13b with the supply pipe 19 attached
is pushed out to the side of the air fin, and the supply pipe 19 is held and moved back and forth along the side by hand.

It is sufficient that the amount W of the horizontal portion 13a of the cleaning nozzle protrudes from the vertical portion 13b is about 273rd of %1w of the air fin, which is about 5c■. The air fin gets the dirtiest because it is 1/1/2 the width of the side where fan 5 blows indoor air.
This is because it is the third place part.

The storage tank 11 mentioned above has a filter 2 inserted into it from above.
0, this filter 20 has a filter medium 21 filled inside.
A water intake port is provided above the water intake port, and the water intake port and the suction nozzle 14 are connected by a flexible hose 22 or a one-touch joint. Of course, the saponifier 20 is removable so that when the plowing force of the filter medium decreases, it can be replaced with a new filter medium.
The storage tank 11 has a replenishment port 11' with an on-off valve for replenishing cleaning liquid therein.

The suction nozzle 14 has its lower end connected to the aforementioned flexible hose 22, and its upper part is a hook-shaped tube that is folded back and opened downward. The drain receiver 6 is hung from above on the edge of the drain receiver 6, and the downward opening is positioned directly above the bottom of the drain receiver 6.

To clean the air fin 1, which is an indoor unit of a ceiling-mounted air conditioner, remove the cover 9, the fan 5, and its drive motor from the recess 3, and then lower the horizontal part 13a of the cleaning nozzle 13 onto the air fin as described above. and the insulation material 4, and the suction nozzle 14 is hung from the edge of the drain receiver 6 by the curved line 114', the pump I2 is operated, and the cleaning nozzle 1
3 along the side of the air fin l.

As a result, the cleaning liquid sprayed downward from the injection hole 13' of the cleaning nozzle washes away dirt and debris that has clogged the gaps between the air fins, and the discharge pressure caused by the operation of the pump 12 causes the inside of the storage tank 1 to become a negative pressure. Then, the suction nozzle 14, which is connected to the inside of this storage tank 11 through a filter 2o and a flexible hose 22, sucks the dirty cleaning waste water that flows down into the drain receiver 6 and flows it to the filter 20, and the filter 2o is a filter medium. The cleaning wastewater is cleaned of dirt and returned to the storage tank 11, and the cleaning liquid is thus recycled.

Normally, the drain receiver 6 directly below the air fin is a shallow dish-shaped pan with a small capacity because the amount of condensed water generated is small.
If a large amount of washing wastewater is received, it may overflow and stain the floors and desks, and there is also a risk that the condensed water drain pipe may be clogged with dirt in the washing wastewater, but as described above, it is stored by operating the pump 12. Using the negative pressure generated in the tank 11, the suction nozzle sucks the cleaning wastewater containing dirt flowing into the drain receiver 6 and returns it to the storage tank 11 via the filtration device 20, so that the cleaning wastewater is removed from the drain receiver. overflow, drain pipe
There is no room for clogging, and since the cleaning fluid is recycled and the oil contained therein is adsorbed by the filter material, other chemicals can be used effectively.

For cleaning, two cleaning devices were prepared: one containing a cleaning solution containing chemicals in a storage tank and the other containing water as a cleaning solution in a storage tank.At first, the cleaning equipment was cleaned with a cleaning solution containing chemicals and then washed with cleaning waste water. When no more dirt is found, transfer the flexible hoses 16 and 22 to another cleaning device, wash them with water this time, and then reinstall the fan and cover.

In addition, in order to check the presence or absence of dirt in the waste water to be washed, use the suction nozzle 1.
4, or the hose 22 connecting this to the filter 20 may be made of a transparent material.

Also, i! ! It is preferable that the material 21 filled in the filter 20 not only separates suspended solids such as garbage, but also adsorbs and branches unemulsified oil. For this purpose, for example, an ion exchange resin is used. Good to use.

Further, the discharge port side of the pump 12 is branched and connected to the bottom of the storage tank 11 by a pipe 24 having a pressure check valve 23, and the valve of the liquid supply port 12' is closed while the pump 12 continues to operate. When cleaning is temporarily stopped, it is preferable to circulate the cleaning liquid through the pipe 24 to the storage tank. Of course, if you open the valve of the liquid supply port 12' and restart cleaning, the cleaning will start. [ flows from the flexible hose 15 to the cleaning nozzle 13, and the pressure of the cleaning liquid acting on the pressure check valve 23 decreases, so that the entire amount of cleaning liquid discharged by the pump 12 is jetted out from the injection hole 13' of the cleaning nozzle.

<Effects of the Invention> The present invention seals the storage tank 11, performs cleaning by discharging the cleaning liquid inside to the cleaning nozzle 13 with the pump 12, and uses the negative pressure generated in the storage tank 11 at that time to drain the cleaning waste water. is sucked into the storage tank with a suction nozzle and used for circulation.

Therefore, compared to discharging cleaning wastewater as it is, the amount of chemicals used is reduced because the still active chemicals contained in the cleaning wastewater are used effectively, and the surrounding environment is Contamination can be prevented.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing an embodiment of the present invention during washing, Fig. 2 is a perspective view of a part of the washing nozzle in cross section, and Fig. 3
The figure is a side view of the suction nozzle in use, and Figure 4 is an explanatory diagram of the installed condition of the indoor unit of the ceiling-embedded air conditioner. In the figure, 11 is the storage tank, 12 is the pump, 13 is the cleaning nozzle, and indicates a suction nozzle. Patent Applicant: Kuri 1) Kogyo Co., Ltd., Dou・': 2 companies Agent: Patent Attorney Fuku 1) Nobuyuki, -
Figure 1

Claims (4)

[Claims] (1) A pump having a cleaning liquid storage tank, a pump having a suction port connected to the tank and a cleaning nozzle connected to a discharge port, and a cleaning waste water suction nozzle having one end connected to the storage tank; A cleaning device characterized in that the interior of the storage tank is brought to a negative pressure, and the washed waste wood, which has been cleaned by the cleaning nozzle, is sucked into the storage tank by the suction nozzle and circulated. (2) In the cleaning device according to claim 1,
A cleaning device, wherein the storage tank is equipped with a filter, and the suction nozzle is connected to the filter. (3) A cleaning device according to claim 1 or 2, in which the storage tank, the pump, and its drive motor are mounted on a truck. (4) In the cleaning device according to any one of claims 1 to 3, the object to be cleaned is an indoor unit of a ceiling-mounted air conditioner/heater, such as a ceiling-embedded type or a ceiling-suspended type. can be,
A cleaning device in which the suction nozzle is removably connected to the drain receiver of the indoor unit.