JPS62155117A - Airconditioning device for car - Google Patents

Abstract

PURPOSE:To improve a deodorizing effect by forming an interior circulation flow passage for a deodorizing agent in parallel with an airconditioning flow passage and between a casing for air introduction and a cooler unit, and circulat ing for a predetermined time air after passing an evaporator. CONSTITUTION:When outside air is introduced, primary and secondary doors 15 and 16 are located at 'A' position and an open/close damper 32 at 'D' position. When inside air is introduced, the doors 15 and 16 are kept at 'B' position and the damper 32 at 'D' position. When air is circulated, a blower fan 20 is turned 'ON'. Consequently, the primary door 15 comes to be located at 'A' position, the secondary door 16 at 'B' position and open/close damper 32 at 'C' position, thereby letting the supply air flow into a bypass 6 via an evaporator 31 for a predetermined time, and circulate through re-introduction to a blower unit 2 after passing a deodorizing agent 61. After the predetermined time has passed, the circulation system is released and a normal system is restored. According to the aforesaid constitution, a deodorizing effect is improved.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an air conditioner for an automobile.

[Prior Art and Problems to be Solved by the Present Invention] Conventionally, there is a method as disclosed in Japanese Patent Application Laid-open No. 57-172817 as a method for eliminating the bad odor that passes through the evaporator when the blower fan is started.

However, such air conditioners for automobiles have a structure in which a deodorizing member is placed in the middle of the air flow path even when the deodorizing effect is not performed, which causes ventilation resistance.
In addition, the structure is such that the air that has passed through the filter is blown into the vehicle interior regardless of whether it has been deodorized or not, so the problem is that the air is not completely deodorized and is blown into the vehicle interior with odors still in it. was there.

In view of such conventional examples, the present invention aims to ensure the deodorizing effect by preventing the provision of a deodorizing member from becoming a ventilation barrier during normal air blowing.

[Configuration of the present invention]

In order to achieve such an object, the present invention provides an air introduction case having an inside air inlet, an outside air inlet, and an outside air switching door; a blower unit disposed downstream of the case and having a blower fan; In an air conditioner in which an air conditioning flow path is formed by a cooler unit disposed downstream and having an evaporator, and a heater unit disposed downstream of the cooler unit and having a heater core and a blowing device, an air conditioning flow path is formed in parallel with the air conditioning flow path. A circulation flow path is provided, with both ends facing the air introduction case and the cooler unit, and a deodorizing member is disposed in the circulation flow path, so that when the blower fan is turned on,
Closing or substantially closing the space between the downstream side of the evaporator and the upstream side of the heater core in the air conditioning flow path so that the air that has passed through the evaporator is introduced into the air introduction case via the circulation flow path; The internal and external air inlets of the air inlet case are closed, and after a predetermined period of time, the circulation flow path is closed and one of the internal and external air inlets is opened.

[For production]

Since the present invention has such a configuration, the blower fan is turned on.
When this is done, the inside and outside air inlet ports are closed, and by closing the downstream side of the evaporator and upstream side of the heater core, the air between the air inlet case, the blower unit, and the cooler unit sent by the blower fan is air-conditioned. After flowing through the flow path and passing through the evaporator, the air reaches the circulation flow path, where the odor is eliminated by a deodorizing member, blown into the air introduction case, and sucked into the blower fan again. After being cooled and deodorized, and after a predetermined period of time has elapsed, the downstream side of the evaporator and the upstream side of the heater core are opened, and the inlet to the circulation flow path is closed, so that it is blown into the passenger compartment through the air conditioning flow path. . Also, if the space between the downstream side of the evaporator and the upstream side of the heater core is almost closed, some air will blow out into the passenger compartment, so passengers may experience the strange feeling that no air is coming out even when the blower fan is turned on. This means that there is no need to give it to

〔Example〕

The configuration of an embodiment of the present invention will be explained using FIGS. 1 to 3.

In the figure, 1 is an air introduction case, 2 is a blower unit, and 3
4 is a cooler unit, and 4 is a heater unit.

The air introduction case 1 has an inside air introduction port 10 and an outside air introduction port 1), and an inside/outside air switching door 14 is rotatably supported on the case body 12 via a shaft 13. Both the inlet 10 and the outside air inlet 1) can be opened and closed. The door 14 has a double structure including a first door 15 for the inside air inlet 10 and a second door 16 for the outside air inlet 1). Furthermore, in the case body 12,
It has a first connection opening 17 .

The blower unit 2 includes a blower fan 20 , and has an inlet 21 and an outlet 22 in a case body 23 .

24 is a fan motor.

The cooler unit 3 has an evaporator 31 on the upstream side of the case body 3o, and has an opening/closing damper 32 on the downstream side.

The heater unit 4 has an air mix door 41 disposed on the upstream side of the case body 40, has a heater core 42, and has a defroster 43, a ventilator 44, and a foot 45 on the downstream side.
It has an air outlet. 46, 47, and 48 are the respective doors.

Then, an air introduction case 1, a blower unit 2,
Air conditioning flow path 5 between cooler unit 3 and heater unit 4
A bypass duct 6, which serves as a circulation flow path, is arranged in parallel with the flow path. This bypass duct 6 is arranged so that both ends thereof face the first connection opening 17 of the air introduction case 1 and the second connection opening 33 formed downstream of the evaporator 31 of the case body 30 of the cooler unit 3. The opening/closing damper 32 can be opened and closed in the second connection opening 33. A deodorizing member 61 is arranged on the side of the first connection opening 17 of the bypass duct 6.

Because of this configuration, as shown in Table 1, when introducing outside air, the first. The second door 15.16 is in position A,
The opening/closing damper 32 is in position D, and when inside air is introduced,
1st. The second door 15,16 is at position B, the opening/closing damper 32 is at position D, and air is blown to the heater unit 4 through the air conditioning flow path 5.

During circulation, that is, when the blower fan 20 is turned on, the first door 15 is in position A, the second door 16 is in position B, the opening/closing damper 32 is in position C, and the air blown by the blower fan 20 is in position A. The air flows into the bypass duct 6 via the evaporator 31, passes through the deodorizing member 61, and is guided to the blower unit 2 again. The air is then circulated repeatedly to reduce the temperature and remove foreign odors.

After a certain period of time, the circulation system is released,
It will automatically return to the normal system.

The structure of another embodiment of the present invention will be explained using FIGS. 4 to 6.

The air introduction case 70 has an inside air introduction port 10 and an outside air introduction port 1), and an inside/outside air switching door 14 is rotatably supported on the case body 71 via a shaft (not shown). Both the inside air inlet 1o and the outside air inlet 1) can be opened and closed. The door 14 has a double structure including a first door 15 for the inside air inlet 10 and a second door 16 for the outside air inlet 1).

A partition wall 2 between the blower unit 2 and the case body 23
5 and the case body 71, an open lower lower 2 is formed, and a deodorizing member 61 is disposed on the open lower lower 2.

A first opening/closing damper 73 is provided downstream of the deodorizing member 61 of the case body 71, and in the horizontal state H as shown by the white line, it is on the extension line of the partition wall 25 and faces the evaporator 31.
This is to close the opening lower 2 as shown by the solid line (G).

The cooler unit 80 has the evaporator 31 on the upstream side of the case body 81, and the second opening/closing damper 8 on the downstream side.
It has 2. This second opening/closing damper 82 closes the outlet 83 in the state (1) shown by the white line, and opens the outlet 83 in the state (J) shown by the solid line.

Therefore, according to this embodiment, in a normal air conditioner, as shown in FIG. 4 and FIG.
By placing the first opening/closing damper 73 in position G, air is sent to the entire surface of the evaporator 31, the second opening/closing damper 82 is opened, and the air flows into the heater unit 4. air mix door 4
If 1 is the solid line position, all the water flows into the heater core 42,
If the position is set to the two-dot chain line, the water does not flow into the heater core 42 at all, but instead flows downstream.

When the switch is turned on, this state is maintained for a certain period of time as shown in FIG.

The first opening/closing damper 73 is in the H position, and the second opening/closing damper 8
2 is in the position ■, and the 1st. The second door 15.16 closes the inside and outside air inlet 10.1), so that the blower fan 20
Air circulates within a space closed by.

As shown by the arrow in FIG. 6, it once enters the lower side of the evaporator 31, is cooled, hits the second opening/closing damper 82, enters the upper side of the evaporator 31 again, is further cooled, and is deodorized by the deodorizing member 61. The air enters the blower unit 2 from the air introduction case 70, and then enters the evaporator 31 again.

In this way, the air is circulated, cooled and deodorized in both embodiments, thereby ensuring deodorization.

〔effect〕

As explained above, according to the present invention, a duct for returning air to the blower unit and a damper for selecting whether to return air to the blower unit or to the heater unit are provided downstream of the evaporator, and the circulation path is Since the structure is such that a deodorizing member is installed inside the vehicle, it is possible to reliably deodorize without causing discomfort to the occupants due to air that has not been completely deodorized.

Furthermore, according to the second embodiment, the present system can be applied to the conventional space with almost no changes, resulting in high space efficiency.

[Brief explanation of drawings]

FIG. 1 is a circulation system diagram according to an embodiment of the present invention, and FIG.
The figure is an enlarged explanatory view of the first door and the second door of the internal/external air switching door, FIG. 3 is an enlarged explanatory view of the part ■ in FIG. System diagram, Figure 5 is the arrow direction in Figure 4 ■Explanatory diagram, Figure 6 is the opening/closing damper 7 in Figure 4
3.82 is an action diagram. 1.70... Air introduction case, 2...
・Pro Auniso), 3.80... Cooler: L
Eso 1-14... Heater unit, 5 is an air flow path, 6... Bypass duct serving as a circulation flow path, 10
...Inside air inlet, 1)...Outside air inlet, 12.71...Case body, 14...
・Inside/outside air switching door, 15...First door, 16
...Second door, 17...First connection opening, 20...Blower fan, 24...
Fan motor, 30...Case body, 31...
... Evaporator, 32... Opening/closing damper,
41... Air mix door, 42...
Heater core, 61...Deodorizing member.

Claims (2)

[Claims] (1) An air introduction case having an inside air inlet, an outside air inlet, and an outside air switching door; a blower unit located downstream of the case and having a blower fan; and a blower unit located downstream of the blower unit and having an evaporator. In an air conditioner in which an air conditioning flow path is formed by a cooler unit and a heater unit disposed downstream of the cooler unit and having a heater core and a blowing device, a circulation flow path is provided in parallel with the air conditioning flow path, Both ends of the circulation passage face the air introduction case and the cooler unit, and a deodorizing member is disposed in the circulation passage, so that when the blower fan is turned on, the evaporator in the air conditioning passage is The downstream side and the upstream side of the heater core are closed or substantially closed so that the air that has passed through the evaporator is introduced into the air introduction case via the circulation flow path, and air is introduced inside and outside the air introduction case. 1. An air conditioner for an automobile, characterized in that after a predetermined period of time has elapsed, a circulation flow path is closed and one of the internal and external air inlets is opened. (2) The inside/outside air switching door has a double plate, one of which is capable of closing the inside air inlet and the other of which is capable of opening the outside air inlet. Automotive air conditioner.