JPH02231222A - Filter device for air conditioner - Google Patents

Abstract

PURPOSE:To prevent water splash and carry out deodorization by one device by arranging a filter band in taking-up-enabled manners into an air passage for an air conditioner and selectively exposing a water splash preventing net and a deodorizing filter which are formed continuously to the filter band, into the air passage. CONSTITUTION:In an air conditioner filter device 18, an air passing passage in a case 22 is installed so that a filter band 25 passes in crossing. A pair of roll accommodating parts 24a and 24b in which a pair of rolls 23a and 23b for taking up the filter band 25 in one direction are accommodated are arranged, keeping a case 22 interposed. One roll 23a is connected with a motor 26, and the other roll 23b is interlockingly-connected with one roll 23a by a belt 27. Further, in the upper parts of the roll accommodating parts 24a and 24b, a pair of introducing passages 26a and 28b for introducing the warm air supplied from a heater core are connected. While, the filter band 25 is formed by continuously connecting a water splash preventing net 30 and a deodorizing filter 31, which are selectively exposed.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an air conditioning filter device that is installed downstream of an evaporator in an air conditioner and that prevents water from flying from the evaporator and eliminates odors.

(Prior art) For example, Japanese Utility Model Application Publication No. 56-155913 discloses that since condensed water drops on the surface of an evaporator during cooling operation of an air conditioner, a method is used to prevent this condensed water from being blown away when air is blown. A configuration in which a water-preventing wire mesh is attached is disclosed.

On the other hand, in Utility Model Application Publication No. 63-29040,
A configuration is disclosed in which a deodorizing filter is provided to remove bad odors generated by bacteria adhering to the evaporator during cooling operation. (Problem to be Solved by the Invention) However, once installed in any filter, the filter remains exposed to the air passage at all times, so the ability of the filter (water absorption or deodorizing ability) can be improved in a relatively short period of time. This may cause a decrease in the amount of water or cause clogging. For this reason,
The disadvantage is that the filter must be replaced frequently.

In addition, if both the water prevention wire mesh and the deodorizing filter are installed one on top of the other, the ventilation resistance will increase, so there is a problem that water prevention and deodorization cannot be achieved at the same time with one air conditioning filter device. be.

Therefore, the object of this invention is to provide an air conditioning filter device that does not require long-term filter replacement and can prevent scattering and deodorize with a single device. (Means for Solving the Problems) An air conditioning filter device according to the present invention includes a filter band in which a splash prevention net and a deodorizing filter are connected in series, and a filter band provided in a ventilation path of an air conditioner. A pair of rolls each having one end wrapped around each other, a roll storage section for storing each roll, and an introduction path for introducing hot air from the heater core into the roll storage section, and water splashing into the ventilation path of the air conditioner. It is characterized by selectively exposing the prevention net or deodorizing filter.

(Function) For example, in conditions where bad odors are relatively likely to occur, such as at the beginning of cooling operation, the deodorizing filter is exposed in the air passage, and after cooling operation is started, when splash water is likely to occur, the deodorizing filter is placed on the roll. While wrapping the net, the anti-splash net is exposed to the air passage. Therefore, it is possible to selectively prevent splashing water and extinguish water when operating the air conditioner. Furthermore, when the deodorizing filter or the anti-splash net is wrapped around the roll, hot air is introduced into the roll housing to sterilize or dehydrate the roll when not in use. Particularly, in the case of a deodorizing filter, adsorbed substances are desorbed and discharged from the drain pipe to the outside of the vehicle. This allows the filter to be regenerated and can be used for a long period of time.

(Examples) Examples of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in Fig. 2, the automobile air conditioner l is a device that constitutes a ventilation path, and includes an intake unit 2 from the upstream side, a main body unit 3 that adjusts the air temperature, and an outlet that guides the temperature-controlled air into the vehicle interior. It is composed of Unisoto 4.

In the case 5 of the intake unit 2, a blower 9 is provided that blows air taken in from the outside air intake port 7 or the inside air intake port 8 by switching the intake damper 6. The blower 9 has a motor 11 that drives a fan 10 and a fan IO, and the motor is connected to a control unit 13, which will be described later, to control its driving.

The main unit 3 includes a cooling unit 14 that cools the air and a heat unit 1 that heats the air downstream of the cooling unit 14 that cools the air.
5 to adjust the temperature of the blown air. An evaporator 16 to which refrigerant is supplied and cooled is housed in the cooling unit 14, and an air conditioning filter device 18 according to the present invention, which will be described below, is arranged downstream of the evaporator 16. The heater unit 15 houses a heater core 19 for heating air and an air mix door 20, and is configured to adjust the temperature by adjusting the amount of air passing through the heater core 19. Circulating refrigerant is supplied to the evaporator l6 by a compressor 21, and a temperature detector 17a for detecting the fin temperature of the evaporator l6 and a humidity detector 17b for detecting humidity are attached to the downstream side thereof. Ori,
Each of them is connected to the control unit 2l, and a detection signal is sent in accordance with the detected value.

The air conditioning filter device 18 is installed so that the filter band 25 crosses the ventilation path in the case 22, and has roll storage parts 24a and 24b that store a pair of rolls 23a and 23b for winding the filter band 25 on one side. They are provided with the case 22 in between.

One end 25 of the filter band 25 is attached to the rolls 23a and 23b.
a and end portion 25b are wound and held rotatably left and right. One roll 23a is connected to a motor 26 and driven according to a drive signal from a control unit l3, and the other roll 23b is connected to a belt 27.
It is designed to interlock with one of the rolls 23a.

Each roll storage section 24a. Heater core 1 is installed on the top of 24b.
The introduction channels 28a and 28b for introducing hot air from the roll storage sections 24a. A drain pipe 29 is connected to the lower part of 24b to drain the water accumulated at the bottom of the storage part and lead out the introduced hot air. The filter band 25 has a water splash prevention net 3 at approximately the center of the band.
However, as shown in FIG. 3, net members 30a and 30b are overlapped, and a water-preventing net f
- Felt-like deodorizing fibers 32 are interposed between 30a and 30b. As the net members 30a and 30b, specifically, polyester fibers or nylon fibers having a certain degree of strength, or metal nets formed with 15 to 20 meshes are used.

As the felt-like deodorizing fiber 32, activated carbon fiber is used, for example.

The edges and center of the felt-like deodorizing fiber 32 are heated and pressed to form a net 30a. The MR between 30b and the felt-like deodorizing fiber 32 are prevented from moving. Moreover, it is preferable that the felt deodorizing member 25 be penetrated and thermally bonded to several parts of the filter member 25 .

In addition, in the air conditioning filter device 18, the filter band 2
A frame may be formed along the edge of the filter band 25 to hold the filter band 25 and prevent it from flapping. In the heater unit 15, a part of the air after passing through the evaporator 16 is distributed to a heater core 19 by an air mix door 20, and the temperature of the blown air is adjusted. Further, a damper 33 is provided downstream of the heater core 19, and is in a state shown by a two-dot chain line during air mixing, and is in a state shown by a solid line during air mixing. The temperature-adjusted air is blown out from the ventilator outlet 36 or the foot outlet 37 at the damper 34,35.

With the above configuration, when the A/C switch 38 is turned on, the control unit 13 issues a drive signal to the motor 26, and the roll 23a rotates to expose the deodorizing filter 31. Next, the blower 9 is driven to start blowing air, but the deodorizing filter 31 absorbs bad odors and traps mold and other fungi with the activated carbon fibers, thereby supplying clean air into the vehicle interior. Can be done. Thereafter, the compressor sink 2l of the cooling system is activated to start cooling the evaporator l6. This allows A/C
The bad odor immediately after operation is removed by the air conditioning filter unit 1118, and when the relationship between the temperature and humidity detected by the temperature detector 17a and humidity detector 17b reaches a predetermined value, the control unit 13 starts driving the motor 26. A signal is issued to wind up the deodorizing filter 31, and the splash prevention net 30 is exposed to the air passage. Thereby, the water blown off from the fins of the evaporator 16 by the air blown from the blower 9 is captured by the water splash prevention net 30. In such a state where splashing water occurs, the fin surface of the evaporator l6 is covered with a thin film of water, and the generation of bad odors is almost eliminated, so there is no need for a deodorizing filter. Here, the relationship between the fin temperature and humidity of the evaporator 16 and the occurrence of bad odor and flying water will be explained.

When the evaporator 16 is not in operation, the fin temperature is close to room temperature, so mold and the like can easily attach and propagate there.
Immediately after the A/C switch 38 is turned on, the evaporator l6 is still on.
When the equipment is not cooled, foul odors due to mold, dust, etc. often occur.

On the other hand, after a predetermined period of time has passed after the A/C switch 38 is turned on, the fins are sufficiently cooled and condensed water adheres thereto, increasing the humidity on the fin surfaces, suppressing the musty or dusty odor on the fin surfaces. A situation occurs in which the condensed water is blown away by the blown air.

Therefore, based on the relationship between the fin temperature and humidity of the evaporator 16, it is possible to predict when a bad odor will occur and when splashing water will occur. On the other hand, when the A/C switch 38 is turned off, the control unit 13 controls the motor 2.
6, the splash prevention net 30 exposed to the air passage is moved to the roll 23a. 23b to expose the deodorizing filter 3l. When the anti-splash net 30 is wrapped around the roll 23a or 23b, it is pressed and absorbs water to remove water. The dehydrated water is discharged from the drain hole 29. Furthermore, roll 23
Roll storage parts 24a and 24b that store a or 23b
is supplied with heated air from the heater core 19, and is thereby dried. Therefore, unlike the conventional method, the growth of mold and the like is prevented, and the water splash prevention net 30 can be used for a long period of time without having to be replaced. Furthermore, the heater core 19
The temperature of the hot air supplied from the sterilizer is 60°C to 80°C, and since mycelium and the like are generally killed in 5 to 10 minutes at about 65°C to 70°C, it can be said that this is a temperature sufficient for sterilization.

In the embodiment described above, the temperature sensor 17 is installed in the evaporator l6.
A and a humidity detector 17b were installed, and the motor 26 was driven based on the temperature and humidity detected by these to control the exposure of the water splash prevention net 30 and the deodorizing prevention filter. Not limited to 2 liters of comb ressa.
A similar effect can be obtained even if the deodorizing filter 31 or the splash prevention net 30 is selectively exposed by measuring a predetermined time from N and OFF with a timer and controlling the drive of the motor 26. can. This is because, as shown in FIG. 4, when the evaporator 16 is stopped immediately after the evaporator 16 is stopped and after a predetermined period of time has elapsed, the condensed water on the fin surface evaporates, and a bad odor is generated during this evaporation. In addition, in Fig. 4, the horizontal axis shows the compressor O.
The elapsed time after FF is taken, and the horizontal axis is the odor intensity and fin temperature, where the fin temperature is 35°C and the humidity is 50 to 60°C.
It shows the relationship between elapsed time and odor under the condition of %.

In addition, in order to prevent the evaporator 16 from freezing, generally
Even if the /C switch 38 is input, the compressor 21 may be automatically turned off, but even in this case, the control unit 13 turns the motor 26 so as to expose the deodorizing filter 3l before and after that. It is something that is driven.

Then, just before or after the compressor 2l is turned on again and the evaporator 16 is cooled, the motor 26 is turned on again.
is driven to expose the splash prevention net 30.

Note that the present invention is not limited to use in automobile air conditioners, but similar effects can be obtained even when used in indoor air conditioners for buildings or homes.

(Effects of the Invention) According to this invention, the anti-splash net and the deodorizing filter are integrally formed and each end is wound around a roll, so one of them is wound around the roll and the other is exposed. By doing so, it is possible to selectively deodorize and prevent water splashing with one device.

In addition, when the deodorizing filter or anti-splash net is wrapped around a roll, hot air is introduced into the roll housing to sterilize or dehydrate the filter when it is not in use, thereby regenerating the filter. By desorption of adsorbed substances,
It can be used for a long period of time without requiring filter replacement.

[Brief explanation of the drawing]

FIG. 1 is a sectional view schematically showing the configuration of an air conditioning filter device according to an embodiment of the present invention, and FIG. 2 is a diagram schematically showing the configuration of an air conditioner in which the air conditioning filter device is used. FIG. 3 is a perspective view of the filter band, and FIG. 4 is a graph showing the relationship between compressor stop time and odor. 18... Air conditioning filter device, 19...
・Heater core, 23a, 23b-...-o-ra, 2
4a, 24b... Roll storage section, 25...
...filter band, 28a, 28b... introduction path,
30... Water prevention net, 31... Deodorizing filter. Patent applicant: Diesel Equipment Co., Ltd.

Claims (1)

[Claims] A filter band in which a water splash prevention net and a deodorizing filter are connected in series, a pair of rolls provided in the ventilation path of an air conditioner and around which one end of each filter band is wound, and a roll storing each roll. An air conditioning system comprising a storage section and an introduction path for introducing hot air from a heater core into the roll storage section, and selectively exposing a splash prevention net or a deodorizing filter to the ventilation path of the air conditioner. filter device.