JPS5816407Y2 - air conditioner - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an air conditioner installed in a vehicle such as an automobile.

Automotive air conditioners usually consist of an air intake box with a built-in air intake fan, a heater unit with a built-in heater core, and a heater unit with a built-in heater core. Generally, an evaporator unit is installed in the air conditioner to form a reheat type air conditioner that can perform a cooler function.

This will be explained with reference to FIG. 1. Reference numeral 1 denotes an air intake box, which includes internal and external air intakes 2 and 3, an intake door 4 for switching between internal and external air, and an air introduction fan 5.

6 is a heater duct connected to the air intake box 1; 7 is a heater unit; the heater unit 7 has a built-in heater core 8 and an air mix door 9;
A bypass passage 10 is formed in the upper part, and an air mix chamber 11 is formed downstream of the heater core 8 and the bypass passage 10. Further, from this air mix chamber 11, a ventilator outlet 12, a defroster outlet 13, and a room air outlet are formed. An outlet 14 is formed.

15°16.17 indicates the bench door, defroster door, and room door.

Here, in the case of the standard type, the heater unit 7 is connected to the heater duct 5, and outside air is blown out from the ventilator outlet 12 in the pent mode by controlling the operation of the air mix door 9. In the differential mode, the warm air that has passed through the hita core 8 and the introduced air that has passed through the bypass passage 10 are transferred to the air mix chamber 11.
After mixing and adjusting the temperature, from the room air outlet 14,
Alternatively, the air can be blown out from the defroster outlet 13.

If a reheat type is desired by the user, the heater duct 6 is removed and the evaporator unit 18 is connected between the heater unit 7 and the air intake box 1 to add a cooler function.

However, in such a conventional configuration, since the evaporator unit 18 and the heater unit 7 are independent, the work of connecting and assembling these units is complicated, and moreover, the evaporator unit 18 and the heater unit 7 are separated from each other. There was a risk of water droplets leaking out.

In view of such conventional drawbacks, the present invention has a structure in which an evaporator and a heater core are housed in a single case, and this case is composed of a lower case and an upper case coupled to the lower case, and The case is divided into a front case that stores the upper half of the evaporator and a rear case that stores the upper half of the heater core to improve assembly workability and prevent water leakage. An embodiment will be described in detail with reference to the drawings, with the same reference numerals given to the same parts as in the conventional structure.

That is, in the present invention, as illustrated in FIGS. 2 and 3,
Evaporator 19 and heater core 8 are housed in a single case 20
I try to store it in.

This case 20 is composed of a lower case 21 and an upper case 22, and the lower case 21 has a room air outlet 14 formed at its rear bottom, specifically at the bottom of a portion corresponding to an air mix chamber 11, which will be described later. .

The upper case 22 is divided into a front case 22a that stores the upper half of the evaporator 19, and a rear case 22b that stores the upper half of the heater core 8. A ventilator outlet 12 and a defroster outlet 13 are provided adjacent to each other above a portion corresponding to the mix chamber 11.

The upper and lower cases 21 and 22 are connected by engaging the crimp 25 to crimp seats 23 and 24 formed on their respective connection edges, and the front and rear cases 22a and 22 of the upper case 22 are
Clip receivers 26 and 27 formed on the corresponding connection edges also b.
The clip 25 is attached to and connected.

The evaporator 19 is disposed on the front side of the case 20, and the heater core 8 is disposed following the evaporator 19. In this embodiment, the heater core 8 is placed vertically and inclined with respect to the streamline direction of the introduced air. and place the evaporator 1
The dimension t from the rear end of the heater core 9 to the rear end of the heater core 8 is made smaller to make the air minx chamber 11 wider.

Furthermore, the air mix door 9 is divided into a first air mix door 9a that is disposed on the front side of the heater core 8 and controls the amount of ventilation on the side of the heater core 8, and a second air mix door 9b that controls the amount of ventilation on the side of the bypass passage 10. In this way, the air mix door 9 is arranged independently. By setting a plurality of second air mix doors 9a and 9b and making them compact, the installation space is narrowed, and the heater core 8 can be placed closer to the evaporator 19, so that the air mix chamber 11 can be made wider. It's Nishide.

As described above, according to the present invention, since the evaporator and the heater core are housed in a single case consisting of the lower case 21 and the upper case 22, the evaporator condensed water that accumulates below the case leaks out of the case. There is nothing like that at all.

In addition, since the upper case 22 is divided into a front case that stores the upper half of the evaporator and a rear case that stores the upper half of the heater core, it is easy to use when changing from a standard type to a reheat type. However, you can simply remove the front case and assemble the evaporator without disassembling the entire case, making the work easy and quick.
Furthermore, since the entire case does not need to be disassembled, there is no possibility of misalignment of the assembly position with the heater coat evaporator (and no adverse effects on air conditioning characteristics).

Water droplets attached to the evaporator 19 will not leak outside, and even when changing from a standard type to a reheat type, the evaporator 19 can be simply housed in the front side of the heater core 8. Therefore, there is no need for the troublesome work of first removing the heater duct 6 and then connecting the evaporator unit 18 between the air intake box 1 and the heater unit 7 as in the past, and the work efficiency has been improved by 7 steps. For example, as described in the above embodiment, the upper case 22 is
By separating the rear cases 22a and 22bK, the evaporator 19 can be easily and quickly assembled by removing and installing only the front case 22a.Although the structure is simple, its practical effect is is huge.

[Brief explanation of the drawing]

FIG. 1 is an explanatory cross-sectional view showing a conventional device, FIG. 2 is an explanatory cross-sectional view showing the device of the present invention, and FIG. 3 is an exploded perspective view showing essential parts of the device of the present invention. 5... Air introduction fan, 8... Heater core, 12... Ventilator outlet, 13...
... Defroster outlet, 14... Room outlet, 19... Evaporator, 20...
・Case, 21...Lower case, 22...
・Top case, 22a...Front case, 22a・
...Rear case.

Claims (1)

[Scope of utility model registration request] It has a structure in which an evaporator and a heater core are housed in a single case downstream of an air introduction fan, and the case is composed of a lower case and an upper case coupled to the lower case,
An air conditioner characterized in that the upper case is divided into a front case that houses the upper half of the evaporator and a rear case that houses the upper half of the heater core.