JPH09226358A - Evaporative cooling device for interior - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically supply water to a tank which an evaporative cooling device has so as to reduce the trouble of water supply by disposing a tank for supplying water to a water sprayer in such a position that when a cooling device is operated, water adhering to the outside surface of an evaporator flows to be supplied to the tank. SOLUTION: A tank 6 for supply water to a water sprayer 5, which an evaporative cooling device has is disposed in such a manner that when a cooling device is operated, water adhering to the outside surface of an evaporator 10 flows and the flowing water is supplied into the tank 6. Accordingly, when the cooling device is operated, water adhering to the outside surface of the evaporator 10 flows downward to be accumulated in the tank 6 to be supplied with water, so that the trouble of supply water to the tank 6 can be reduced. Further, it is not necessary to add a device for supplying water into the tank. Further, by the action of a hose provided on the tank 6, the water level in the tank 6 can be kept from being made higher than needed.

Description

Detailed Description of the Invention

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an indoor evaporative cooling apparatus, and more particularly to an evaporative cooling apparatus for reducing the temperature inside a vehicle.

[0002]

2. Description of the Related Art Conventionally, a cooling device for cooling the interior of a vehicle or the like uses a refrigeration cycle to perform cooling. That is, as shown in FIG. 2, a device 40 usually called an air conditioner.
In the refrigeration cycle, the refrigerant is sucked by the compressor 41, and the refrigerant compressed by the compressor enters the condenser 42 as a high-temperature and high-pressure gas, is cooled by the outside in the condenser 42, and is liquefied. The liquefied refrigerant rapidly expands by the expansion valve 45 to become a low-temperature low-pressure atomized refrigerant, enters the evaporator (hereinafter referred to as an evaporator) 10, and the evaporator 10 removes the heat required for evaporation from the surrounding air to the surroundings. At the same time as cooling the air, the refrigerant vaporizes and the compressor 4
Inhaled to 1. When the refrigerant circulates in the closed circuit for such a refrigeration cycle, the air cooled around the evaporator 10 is blown by the blower fan 4 into the air duct 4
It is continuously fed into the vehicle interior via 4 to cool the vehicle interior. The air cooled by the evaporator 10 in the air duct 44 is sent to any of the blower ports 12, 13, 14 or the defroster 15 (see FIG. 4) to cool the vehicle interior. Reference numeral 43 in FIG. 2 denotes a heater core, and the blower ports 12, 13, 14 and the defroster 15, and dampers around the heater core are not shown.

When air is rapidly cooled by the refrigerant in the vicinity of the evaporator surface during operation of this cooling device, the air cannot contain water above the saturated steam pressure curve of the cooling / heating cycle, and water that exceeds this curve cannot be contained. Water that adheres to the outer surface of the evaporator flows downward due to its own weight, and this water collects and collects at the bottom of the inner surface of the cover where the evaporator fits, and the hose provided in part of the lower cover of the vehicle It is discharged to the outside.

On the other hand, in addition to the structure of the cooling device which constitutes the above-mentioned cooling cycle, the temperature inside the room is lowered while the vehicle is stopped,
For the purpose of humidifying the interior of the vehicle, a water sprayer is installed inside the vehicle to create mist-like water (hereinafter referred to as mist), which is sprayed into the room with the help of a fan to measure the temperature inside the vehicle. A device that lowers the temperature and enables humidification is disclosed in Japanese Patent Laid-Open No. 6-29.
It is disclosed in Japanese Patent No. 3215.

[0005]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention The conventional evaporative cooling system described above is used when the vehicle interior becomes hot due to parking in the hot weather in the summer for a long time, or when the vehicle is stopped for a while in the hot weather, and particularly the engine is stopped. If you leave the vehicle for a while, you can effectively reduce the temperature inside the room
Alternatively, in order to effectively humidify a dry room in winter, mist is sprayed into the room. However, in this evaporative cooling apparatus, in order to supply water to the water atomizer that generates fog, it is necessary to supply water to the tank that serves as the water supply source. Water is supplied and the accumulated water is used when the water sprayer operates, but if this water sprayer is continuously operated, the water in the tank will disappear quickly and it will be necessary to replenish the water until it reaches a certain amount. Replenishment of water becomes troublesome. In addition, when replenishing water to the tank, it is necessary to have a structure in which more water than necessary is not supplied.

Therefore, according to the present invention, in a vehicle equipped with a cooling device and an evaporative cooling device separately from the cooling device, water is automatically replenished to a tank of the evaporative cooling device and the water replenishment is troublesome. It is a technical subject to reduce the water consumption and to prevent the water from being supplied more than necessary when the water is replenished.

[0007]

As a technical means for solving the above-mentioned problems, a water sprayer 5 of an evaporative cooling system is provided.
A configuration is adopted in which the tank 6 that supplies water to the tank 6 is arranged such that water that adheres to the outer surface of the evaporator 10 flows when the cooling device is activated and the flowing water is supplied to the tank 6. With the above configuration, when the cooling device is activated during traveling,
The water generated on the outer surface of the evaporator 10 automatically flows into the tank and is replenished.

More preferably, if the tank 6 is arranged below the evaporator 10 of the cooling device, the water generated on the outer surface of the evaporator 10 during operation of the cooling device is positioned below the evaporator 10 by its own weight. It flows to 6. Further, by providing the hose 52 on the upper portion 51 of the tank 6, water above a certain level will not be accumulated.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 4 are schematic views of an indoor evaporative cooling apparatus equipped in a vehicle 1. The apparatus uses an fan 10 to introduce outside air (outside air) from an engine room 22 toward an interior 11 into an evaporator 10 and an air duct. It has an air-conditioning mechanism that sends air to the blower ports 12, 13, 14 or the defroster 15 (see FIG. 4) via (not shown). In this air conditioning system, the engine room 22 to the fan 4
The outside air that has entered by means of the air blower 12, 13, 14 or the defroster 15 (see FIG. 4) passes around the evaporator 10, passes through the air conditioner servo assembly (not shown) together with the mist 37 from the water sprayer 5. )
It is flowing to. On the other hand, the mechanism is such that the exhaust air to the outside of the room 11 is exhausted to the outside of the vehicle from the exhaust port 23 at the rear of the rear seat through the trunk room.

A cooling device 40 generally called an air conditioner will be described with reference to FIG. This device 4
Reference numeral 0 has a closed circuit having a compressor 41, a condenser 42, an expansion valve 45, an evaporator (evaporator) 10, etc., and a refrigerant flows through the closed circuit of the device to perform cooling using a refrigeration cycle. In the operating state, the refrigerant sucked and compressed by the compressor 41 enters the condenser 42 as a high-temperature and high-pressure gas, and is cooled by air in the condenser 42 and liquefied. The liquefied refrigerant rapidly expands by the expansion valve 45 to become a low-temperature low-pressure atomized refrigerant, enters the evaporator 10, and the evaporator 10 removes the heat necessary for evaporation from the surrounding air to cool the surrounding air and at the same time the refrigerant is vaporized. , Is again sucked into the compressor 41. When the refrigerant thus circulates in the closed circuit, the air cooled around the evaporator 10 is continuously sent into the vehicle interior by the blower fan 4 through the air duct 44 to cool the vehicle interior. is there.

When the cooling device operates, if the air is rapidly cooled by the refrigerant in the vicinity of the surface of the evaporator 10, the air from the outside cannot contain water above the saturated vapor pressure curve of the cooling / heating cycle, and this curve. Moisture that has exceeded the temperature of the evaporator 10 adheres to the outer surface of the evaporator 10, and the water that has adhered to the evaporator 10 then flows downward due to its own weight. It is discharged from the lower cover through the external hose to the outside. Therefore, the evaporator 1 is discharged to the outside when the cooling device is activated.
The water attached to the outer surface of No. 0 is supplied to the tank 6 (see FIG. 1) for supplying water to the water sprayer 5 to replenish it.

The water sprayer 5 will be described in detail later, but the water previously stored in the tank 6 is pumped up by the pump 20 and is atomized by the piezoelectric member 35, that is, the fog 37.
Is generated. In the vaporization spray device, the blower fan 4, the water sprayer 5, and the pump 20 are controlled by the controller 21 based on the temperature detected by the temperature sensor 9 and the temperature sensor 9 mounted in the room 11, and spray the mist 37 into the room 11. It is composed of a controller 21 for performing. It should be noted that the temperature sensor 9 serving as a base for operating the vaporization sprayer may be attached anywhere in the vehicle interior 11, and the number of attachments is not limited.

FIG. 2 is a schematic assembly diagram when the water sprayer 5 is attached to the cooling device (air conditioner device) 40. The blower fan 4 is fitted and attached to one side surface of the evaporator 10. The location where the water sprayer 5 is attached is not limited as long as the blower fan 4 can blow the mist 37 into the room 11.

With the cooling device thus constructed, the air that has entered the blower fan 4 from the engine room 22 is cooled by passing through the evaporator 10, and the cooling air is supplied from the air conditioner servo assembly (not shown) to the vehicle interior 11.
To the blower ports 12, 13, 14 or the defroster 15 shown in FIG.

In the above construction, the tank 6 is arranged below the lower case (not shown) in which the evaporator 10 is housed. By bringing the tank 6 below the evaporator 10 in this way, the water generated on the outer surface of the evaporator 10 flows downward under its own weight and gathers in the lower cover to be collected by the holes provided in the cover. It is configured to be stored in a tank 6 arranged below the evaporator 10.

With the above structure, when the cooling device is operated, the water attached to the outer surface of the evaporator 10 flows downward and is automatically replenished with water in the tank 6 arranged below the evaporator 10. It is possible to reduce the trouble of replenishing the water. Furthermore, it is not necessary to add a device for supplying water into the tank. Also,
The action of the hose 52 can prevent the water level in the tank from becoming unnecessarily high. Note that it is also possible to use a valve that detects the water level using a water level sensor to detect the water level and shuts off the water supplied to the tank 6 based on the water level. Further, the tank 6 is designed so that water can be replenished from the outside when the cooling device is not operating,
The water supply port of the tank 6 can also be brought to a place where water can be easily supplied.

Next, the water sprayer 5 will be described with reference to FIG. FIG. 3 is a cross-sectional view of the water sprayer 5. In the water sprayer 5, a plate-shaped piezoelectric member 35 is provided below the inside of the container 31, and the cover 3 in which the upper part of the container 31 has a mesh shape.
It is constructed by covering two. This piezoelectric member 3
Water is pumped from the tank 6 provided outside 5 through the hose 33 by the operation of the pump 20, and the pumped water is jetted from the nozzle 24 onto the surface of the piezoelectric member 35. In this case, the harness 34 extends from the controller 21 to the piezoelectric member 35, and the voltage can be applied by the controller 21 based on the temperature detected by the temperature sensor 9. The mechanism for generating fog applies a voltage to the piezoelectric member 35, and the piezoelectric member 35 vibrates as an ultrasonic vibrator due to the piezoelectric effect, vibrates the water sprayed on the surface of the piezoelectric member 35, and causes the water surface 36 to move. This is to disperse finer mist, and this mist is operated by the blower fan 4 inside the room 1
1 to generate fog in either the blower ports 12 to 14 or the defroster 15 (see FIG. 4).

The water sprayer 5 of this evaporative cooling system is operated by a timer for a certain period of time when the engine of the vehicle is stopped. For example, the temperature of the room is lowered while the vehicle is stopped in the hot weather in the summer, or the dry room in the winter is humidified. Is effective when
If the indoor evaporative cooling device is activated within 5 to 6 minutes after stopping the refrigeration cycle, the evaporator 10 still has the ability to cool the air, so that the air inside the vehicle is returned to the inside of the duct 44 and the evaporator is cooled. When the temperature of the air is lowered by passing it around, the cooling efficiency can be increased by the synergistic effect with the cooling effect of the mist 37. For the operation of the blower fan 4 and the water sprayer 5, the operation start time and the operation time may be predetermined by a timer and the controller 21 may be operated.

[0019]

According to the present invention, the tank for supplying water to the water atomizer of the evaporative cooling apparatus is arranged at a position where water attached to the outside of the evaporator flows and is supplied into the tank when the cooling apparatus is activated. As a result, when the cooling device is activated, the water automatically generated on the evaporator surface flows into the tank to replenish the water, and the trouble of replenishing the water in the tank can be reduced. If the tank is arranged below the evaporator, the water generated on the outer surface of the evaporator will flow to the tank by its own weight, and a device for flowing the water from the lower cover of the evaporator to the tank is unnecessary. Further, by providing a hose on the upper portion of the tank, it becomes possible to remove water above a certain level.

[Brief description of drawings]

FIG. 1 is a schematic diagram of an indoor evaporative cooling apparatus according to an embodiment of the present invention.

FIG. 2 is a schematic view of a general cooling device and a water sprayer attached to the cooling device.

FIG. 3 is a sectional view of a water sprayer according to an embodiment of the present invention.

FIG. 4 is a view showing a blower port of the cooling device.

[Explanation of symbols]

 1 Vehicle 5 Water atomizer 6 Tank 10 Evaporator

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Internal reference number FI Technical display location F24F 6/14 F24F 6/14 F25B 19/00 F25B 19/00 Z (72) Inventor Keiichi Ishida Aichi Aisin Seiki Co., Ltd., 2-chome, Asahi-machi, Kariya city, Japan (72) Inventor, Mori Mori 2-3-chome, Showa-cho, Kariya city, Aichi prefecture, Aisin Engineering Co., Ltd.

Claims (3)

[Claims] 1. A cooling device for cooling an interior of a vehicle, a water sprayer for spraying mist-like water into the interior of the vehicle separately from the cooling device, a tank for supplying water to the water sprayer, and an inside of the tank. In an indoor evaporative cooling system having a pump for pumping the water of the water sprayer to the water sprayer, an arrangement in which water externally attached to an evaporator of the cooling device flows through the tank and is supplied into the tank when the cooling device operates. An indoor evaporative cooling device characterized by: 2. The indoor evaporative cooling apparatus according to claim 1, wherein the tank is disposed below the evaporator. 3. The indoor evaporative cooling apparatus according to claim 1, wherein a hose is provided on an upper portion of the tank. [0001]