JPH0577641A - Ceiling-type cooling unit for vehicle - Google Patents

Abstract

PURPOSE:To prevent lowering of cooling capacity, which is caused when air cleaning function is integrated in a ceiling-type air cooling unit for a vehicle. CONSTITUTION:In a casing 2 of a cooling unit 1, an intake port 7 is formed on the front side of a vehicle, while a blowoff port 8 is formed on the rear side. The intake ports 7 are formed at three places in total; one at the middle part and two at both sides of the casing 2. A filter 5 as an air cleaning means is arranged in the casing 2 in such a manner that it blocks an intake port 7a, which is formed at the middle part of the casing 2. In the casing 2, a sirocco fan 4 is installed in the upper part of the filter 5, and operation of this sirocco fan 6 sucks air inside a car room through the intake port 7. In addition, a cross-flow fan 4 is installed in the vicinity of the blowoff port 8, and operation of this cross-flow fan 4 also sucks the air inside the car room through the intake port 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceiling-mounted vehicle cooling unit having an air cleaning function.

[0002]

2. Description of the Related Art Conventionally, many vehicles have been equipped with an air conditioner for cooling and heating the interior of a vehicle. However, the air inside the vehicle is unexpectedly affected by cigarette smoke, dust entering from the outside, dust, etc. getting dirty. Therefore, in recent years, in addition to the air conditioner, there is a tendency to include an air cleaning device that purifies the air in the vehicle interior. This air purifier is installed in the rear tray, in the luggage compartment, or on the floor of a wagon car, etc., but especially when considering the pollution of the vehicle interior air by cigarette smoke, install the air purifier at the ceiling behind the driver's seat. It is desirable to install in

[0003]

However, in a vehicle equipped with a cooling unit for the rear seats on the ceiling, when the air purifying device is integrated with the cooling unit in order to effectively use the interior space of the vehicle, the air is blown into the air passage. The air resistance increases due to the placement of the filter of the cleaning device, and as a result,
There was a problem that the cooling capacity was reduced. The present invention was made based on the above circumstances, and its purpose is to:
It is an object of the present invention to provide a ceiling-mounted vehicle cooling unit that prevents a decrease in cooling capacity caused by integrating an air cleaning function.

[0004]

In order to achieve the above object, the present invention provides a casing having an air intake and an air outlet and installed on the ceiling of a vehicle, and in the casing, the intake port. From the suction port to the air outlet, a refrigerant evaporator of the refrigeration cycle arranged in the air flow channel generated by the operation of the blower, and a part of the air channel from the suction port to the air outlet. And an air purifying device for sucking the air in the vehicle compartment from a part of the suction port to generate an air flow passing through the air purifying device. Is a technical means.

[0005]

According to the present invention having the above-described structure, the air in the vehicle compartment is sucked through a part of the suction port by operating the air blower and passes through the air purifying means. Since this air purification unit is arranged in a part of the air flow path from the intake port to the air outlet, the air purified by passing through the air purification unit is blown out into the vehicle compartment from the air outlet. become.
On the other hand, the vehicle compartment air sucked from the suction port by the operation of the blower bypasses the air purifying unit, passes through the refrigerant evaporator, and is blown out as cold air from the blowout port.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a ceiling-mounted vehicle cooling unit according to the present invention will be described with reference to FIGS.
FIG. 1 is a sectional view of a ceiling-mounted vehicle cooling unit,
FIG. 2 is a perspective view showing a mounted state of the cooling unit.

The cooling unit 1 of the present embodiment has an air purifying function for purifying the air in the passenger compartment, in addition to a cooling function for cooling the rear seats. The cooling unit 1 includes a resin casing 2 and is installed on the ceiling behind the front seats as shown in FIG. Casing 2
Inside, a refrigerant evaporator 3 and a cross flow fan 4 (blower of the present invention) of a refrigeration cycle that constitute a cooling function, and a filter 5 (air purifying means of the present invention) and a sirocco fan 6 (that constitute an air cleaning function). The blower device of the present invention) is housed.

The casing 2 is long in the vehicle width direction,
It has a size substantially covering the entire width of the vehicle interior, an intake port 7 for air inside the vehicle interior is formed on the front side of the vehicle, and an air outlet 8 is formed on the rear side of the vehicle.
Are formed. The intake ports 7 are located on both front left and right sides (in the vehicle width direction) of the casing 2 and are obliquely downward to the front seat. The place is formed. The air outlets 8 are formed in two places on the left and right rear sides of the casing 2 and obliquely downward toward the rear seat.

The refrigerant evaporator 3 is provided in the casing 2 so as to be long in the vehicle width direction and has substantially the same size as the entire length of the opening of the air outlet 8. The refrigerant evaporator 3 is connected by a refrigerant pipe (not shown) from the refrigeration cycle mounted in the engine room of the vehicle. Also, casing 2
The bottom surface of is provided with a weir 9 for preventing water droplets adhering to the refrigerant evaporator 3 from flowing out. Cross flow fan 4
Is operated by turning on an air conditioner switch (not shown) to generate an air flow from the inlet 7 toward the outlet 8 and blow the air to the refrigerant evaporator 3 during the cooling operation.
The cross-flow fan 4 has a length in the axial direction (vehicle width direction) that is substantially the same as the length of the opening of the air outlet 8. In addition, inside the casing 2, the air flow generated by the operation of the cross flow fan 4 can be effectively used.
An air guide plate 10 is provided for guiding to.

The filter 5 is of a filtration type in which a high density woven fibrous activated carbon is formed in a honeycomb shape, and has an odor (body odor, sweating, residual cigarette odor, etc.) and harmful gas (sulfurous acid gas, nitrogen oxide). , Hydrogen sulfide, etc.). The filter 5 has a suction port 7a that opens at the center of the casing 2.
Has a size substantially the same as that of, and is arranged so as to close the suction port 7a.

The sirocco fan 6 is arranged above the filter 5, the suction port 6b of the scroll casing 6a is open toward the filter 5, and the discharge port 6c is open toward the air outlet 8 of the casing 2. .. The sirocco fan 6 is activated by energizing the motor 6d by turning on an air purifying switch (not shown), and generates an air flow from the suction port 7a at the center of the casing 2 toward the air outlet 8.

Next, the operation of this embodiment will be described. When the air conditioner switch is turned on, the crossflow fan motor (not shown) is energized to rotate the fan. By the operation of the cross flow fan 4, the air in the vehicle compartment is sucked into the casing 2 through the intake ports 7b opening on both sides of the casing 2 and cooled when passing through the refrigerant evaporator 3. Then, after passing through the cross flow fan 4, it is guided to the air guide plate 10 and is blown into the passenger compartment as cool air from the air outlet 8.

When the air purifying switch is turned on, the sirocco fan 6 is activated, and the air in the vehicle compartment is sucked into the casing 2 through the intake port 7a opening in the center of the casing 2 and passes through the filter 5. .. The air that has passed through the filter 5 and is purified is blown out from the discharge port 6c through the scroll casing 6a, passes through the refrigerant evaporator 3, and then passes through the cross flow fan 4 into the vehicle interior through the blowout port 8. Blown out.

As described above, when the cross flow fan 4 is operated, the air in the vehicle compartment is sucked through the intake ports 7b provided on both sides of the casing 2, and when the sirocco fan 6 is operated, the vehicle compartment is Air is sucked through the suction port 7a provided at the center of the casing 2. Therefore, when the cooling operation is performed, the presence of the filter 5 does not become the resistance of the air flow generated by the operation of the cross flow fan 4. Therefore,
It is possible to prevent the cooling capacity from dropping due to the air cleaning function being integrated into the cooling unit 1. Further, since the cross flow fan 4 and the sirocco fan 6 can be operated independently of each other, it is possible to clean the air in the vehicle interior while the cooling operation is stopped. It is possible to operate with a proper amount of air blown by the operation of the sirocco fan 6 instead of the large air volume caused by the operation of.

A suction port 7 provided at the center of the casing 2
Although a is directed downward, it may be opened obliquely downward toward the front seat as in the case of the intake ports 7b on both sides. Further, the numbers of the filters 5 and the sirocco fans 6 are not limited to one, and may be two or more. Although the sirocco fan 6 is adopted as the blower, the sirocco fan 6 does not have to be limited to the sirocco fan 6, and the cross flow fan 4 may be used, for example. Although the filter 5 is used as the air cleaner, an electrostatic cleaner may be used.

[0016]

In the ceiling-mounted vehicle cooling unit of the present invention, the air purifying means is arranged in a part of the air flow path from the intake port to the air outlet without blocking the entire air flow path. Therefore, it is possible to prevent a decrease in cooling capacity that is caused by integrating the air cleaning function.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a ceiling-mounted vehicle cooling unit.

FIG. 2 is a perspective view showing an example of mounting a ceiling-mounted vehicle cooling unit.

[Explanation of symbols]

 1 Ceiling Mounted Vehicle Cooling Unit 2 Casing 3 Refrigerant Evaporator 4 Cross Flow Fan (Blower) 5 Filter (Air Purifying Unit) 6 Sirocco Fan (Blower) 7 Inlet 8 Ejector

Claims (1)

[Claims] 1. A casing having an air inlet and an air outlet and installed on a ceiling of a vehicle; and b) a blower for generating an air flow from the inlet to the air outlet in the casing. And c) a refrigerant evaporator of a refrigeration cycle arranged in an air flow path generated by the operation of the blower, and d) an air passing through a part of an air flow path extending from the suction port to the blowout port. Cooling system for a ceiling-mounted vehicle, comprising: an air purifying unit that purifies the air, and e) a blower that sucks air in the vehicle compartment from a part of the suction port to generate an air flow that passes through the air purifying unit. unit.