JPH0476807B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an air conditioner installed in a vehicle or the like.

[Background technology]

Conventional in-vehicle air conditioners and air cleaners are independent, and the air cleaner is placed in the rear package tray behind the back seat. As a result, purified air comes from the rear, which may cause some people to feel uncomfortable. In addition, when the air conditioner is operating, the air conditioner is housed in the front package cage, so the air flow from the air purifier and the air flow from the air conditioner are opposed to each other, meaning that the air is not purified sufficiently, and instead, outside air is brought in. The disadvantage was that cleaning could be done more quickly. Furthermore, when the air conditioner is not operating, there is no airflow to guide smoke to the smoke sensor, making it difficult for smoke to reach the smoke sensor, making it impossible for the smoke sensor to perform its ability to detect smoke concentration. However, they do not always lead the smoke to the smoke sensor properly, and they have the disadvantage that the level of smoke that people feel uncomfortable with does not match the level of smoke at which the air purifier operates.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned problems, and its purpose is to improve the efficiency of air purification and the smoke detection ability of a smoke sensor, and to obtain a comfortable airflow inside the vehicle interior. Therefore, it is an object of the present invention to provide an air conditioner that has an air purification function added to a temperature adjustment function.

[Disclosure of the invention]

1 to 4 are diagrams relating to embodiments of the present invention. In this embodiment, as shown in the model diagram shown in FIG. 1, there is an inside air circulation pipe section 5 having an inside air intake port 2 and an exhaust port 3 for circulating air in the vehicle interior 1, and an outside air intake port for taking in outside air. A heat exchanger 6 for air conditioning, a fan 7, and a movable air-conditioning heat exchanger 6, a fan 7, and a movable Filters 8 are arranged one after another, a smoke sensor 9 is arranged closest to the exhaust port 3, and an inside/outside air switching device 10 is arranged in the outside air introduction pipe section 17. Here, the fan 7 sucks up air from the inside air intake port 2 and the outside air intake port 4, and discharges the air from the exhaust port 3. It is attached to rotate as a fulcrum, and under the control of the smoke sensor 9, the movable side locks onto the upper surface of the recess of the internal air circulation pipe 5 as shown by the broken line in the figure, allowing it to freely intervene and detach from the internal air circulation pipe 5 to remove dirt. The inside/outside air switching device 10, which filters the outside air, is attached to the upper surface of the outside air introduction pipe section 17 so as to rotate with one end as a fulcrum, and the movable filter 8
Similarly, under the control of the smoke sensor 9, it rotates to the upper surface of the outside air introduction pipe section 17 as shown by the broken line in the figure, and outside air is introduced. Note that a part of the recess 12 of the inside air circulation pipe section 5 to which the movable filter 8 is attached is made removable so that it can be replaced if the movable filter 8 becomes dirty. Next, the smoke sensor 9 will be explained.

The smoke sensor 9 detects air pollution such as smoke and controls the movable filter 8 and the inside/outside air switching device 10 using the circuit shown in FIG. The control output section consists of a smoke detection section 14 that detects smoke using an optical detection method, etc., and a control output section 15 that drives the movable filter 8 and the inside/outside air switching device 10 based on the output of the smoke detection section 14. 1
5 has an off delay characteristic of 1 to 2 minutes after the smoke detection section 14 is turned off, and prevents the movable filter 8 and the inside/outside air switching device 10 from being repeatedly operated for a short period of time. As a power source for the smoke sensor 9 described above, the power supply voltage of the battery 11 is passed through the fuse 16, and each control voltage for rotating the fan 7 by switching between low speed, medium speed, and high speed of the switch 13 is provided through diodes _D1 to _D3 . supplying. Therefore, the smoke sensor 9 operates regardless of whether the air conditioner is operating at low, medium, or high speed. FIG. 3 is a diagram showing the installation of the above-mentioned air conditioner in a car, and arrows indicate the actual installation position and air exhaust and intake. The operation of the air conditioner configured as described above is as follows. Typically, air conditioners are operated in either an internal air circulation mode or an outside air introduction mode.

In the case of inside air circulation, the inside/outside air switching device 10 shown in FIG. 3 is closed, and the air flows as shown by solid arrows in the figure. This is where smoke is generated by smoking cigarettes, etc.
When the level exceeds a certain level, the movable filter 8 is attached to the inside air circulation pipe section 5 as shown by the broken line in the figure by the smoke sensor 9, and at the same time, the inside/outside air switching device 10 also connects the outside air introduction pipe section 17 as shown in the broken line in the figure. Open to let outside air in. Therefore, by introducing outside air, air is purified more efficiently than conventional air purifiers, and the smoke sensor 9 is placed inside the air conditioner where it can easily detect smoke by utilizing the airflow of the air conditioner. By providing this, the smoke detection ability of the smoke sensor 9 can be improved. On the other hand, when outside air is being introduced, only the movable filter 8 is attached. Therefore, outside air is always introduced to purify the air to some extent. Here, if the outside air is contaminated by exhaust gas from a diesel car or the like, the movable filter 8 is turned on if it is dirty beyond the detection level of the smoke sensor 9, so there is no problem and the outside air is also cleaned. Note that it is also possible to easily set the output of the smoke sensor 9 to two levels and turn on the movable filter 8 when the air is heavily contaminated.

〔Effect of the invention〕

The present invention uses a smoke sensor to control the inside/outside air switching device to introduce outside air, so outside air can be used for air purification. gets better.
In addition, the smoke sensor is placed in a place where it is easy to detect smoke in the inside air circulation pipe, so when the air conditioner is operated, smoke is guided into the smoke sensor, so that the average air inside the vehicle is It must be able to reliably detect dirt,
The ability of the smoke sensor to detect smoke, etc. is improved. moreover,
Since the air conditioner has an air purification function, it creates a comfortable air flow inside the vehicle without causing discomfort to people by opposing the air flow, which is the case when the air purifier and air conditioner are separate. Moreover, since the part where the movable filter is placed is the part through which the outside air passes when trying to introduce outside air, it is possible to use the Only clean air flows into the vehicle interior, and no dirty air flows into the vehicle interior. The above-mentioned smoke sensor can detect not only the dirt in the inside air when circulating the inside air, but also the dirt in the outside air when the outside air is introduced, and a single smoke sensor can detect both inside air and outside air. Not only can it detect the degree of contamination of air, but it can also detect the degree of contamination even when inside air and outside air are mixed, and since it is located after the movable filter, it can also detect the degree of air purification. In addition, it is possible to appropriately determine whether to switch between inside air and outside air.

[Brief explanation of the drawing]

Fig. 1 is a model diagram of the embodiment of the present invention, Fig. 2 is a circuit block diagram of the main parts of the above, Fig. 3 is an explanatory diagram of installation in the same car, and Fig. 4 is the part A of Fig. 3. This is an enlarged view. 1 is a vehicle interior, 2 is an inside air intake port, 3 is an exhaust port, 4 is an outside air intake port, 5 is an inside air circulation pipe section, 6 is a heat exchanger, 7 is a fan, 8 is a movable filter, 9 is a smoke sensor, 10 is an inside/outside air switching device, and 17 is an outside air introduction pipe section.

Claims (1)

[Claims] 1. A pipe for internal air circulation having an internal air inlet and an exhaust port for circulating air in the vehicle interior and an external air introduction pipe having an external air inlet for taking in outside air, and between this communicating part and the exhaust port. A heat exchanger for air conditioning, a fan for air circulation, a movable filter that can be inserted and removed, and a smoke sensor that detects dirt in the air are sequentially installed in the inside air circulation pipe section from the inside air intake side. At the same time, an internal/external air switching device is installed in the outside air introduction pipe that opens and closes the inflow and shutoff of outside air. An air conditioner that introduces outside air by opening an inside/outside air switching device.