JP3018394B2 - Air conditioner indoor unit - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an indoor unit of an air conditioner (air conditioner), and particularly to an assembly structure thereof.

(Prior art)

An air conditioner mounted on an automobile is pre-installed as an indoor unit. The indoor unit is mounted, for example, in front of the driver's seat of an automobile as an integrated object.

Conventionally, such an indoor unit is assembled by first dividing the case horizontally into two parts, a left case 91 and a right case 92, as shown in the conceptual diagram of FIG. Then, an evaporator 95 for cooling and a heater core 96A / M (air mix) damper 97 and a heater damper 98 for heating are mounted in the left case 91 from the lateral direction, and then the right case 92 is connected to the left case 91 from the lateral direction. ing. After that, the vent diff branch duct, which will be described later, is moved above the case (see Fig. 2).
And the like are placed and fixed to constitute the indoor unit.

In FIG. 9, reference numeral 911 denotes an inlet hole for air entering the case, 912,922 denotes a downstream hole, 913,923 denotes an upper inlet hole, and 915,925 denotes a connecting portion between the left and right cases.

[Problem to be solved]

However, in the above conventional indoor unit,
When assembling, first, the case is divided into two parts, left and right, and an evaporator 95 and the like are mounted in the left case 91 from the side.
Next, the right case 92 is connected, and thereafter a vent differential branch duct and the like are placed upward.

Therefore, the assemblability is poor, and it is difficult to automate the assembling. That is, since the case is divided into two parts, the evaporator 95, the heater core 96, the A / M damper 97, the heat damper
When mounting the 98 in the case, work such as screwing must be performed from the side of the case. In addition, the divided right and left cases must be connected (joined) at substantially the center. The work from the lateral direction has many obstacles to automation in the assembly line.

The present invention has been made in view of the above-mentioned conventional problems, and is intended to provide an air conditioner indoor unit that can be easily assembled when assembling components such as a case, an evaporator, a heater core, and a branch duct, and that can be automated in an assembly line. It is something to offer.

[Solutions to solve the problem]

The present invention relates to an indoor unit of an air conditioner in which an evaporator, a heater core, and the like are assembled in a case, wherein the case includes a lower case in which the evaporator is mounted from above, an upper case connected to the lower case, It is divided into three parts: a rear case connected to the downstream side of the case, a branch duct above the upper case, and a heat duct downstream of the rear case. After the evaporator is installed from above in the lower case, the upper case and the branch duct can be stacked and assembled in that order, and the heater core, An indoor unit of an evaporator, wherein the rear case and the heater duct are structured to be sequentially assembled.

The most remarkable point of the present invention is that the case is divided into a lower case, an upper case, and a rear case as described above, and the evaporator, the upper case, and the branch duct can be sequentially stacked and assembled in the lower case. The configuration is such that the heater core, the rear case, and the heater duct can be sequentially assembled on the downstream side of the lower case, thereby enabling automation in an assembly line.

The lower case is open at the top to mount the evaporator from above. The lower part of the upper case is open so as to be connected to the upper part of the lower case.
The heater core is installed in the lower case.

(Operation)

In the indoor unit for an air conditioner according to the present invention, an evaporator is first inserted into the lower case from above and fixed. After that, the upper case is connected to the lower case, and then the branch duct is sequentially assembled on the upper case. next,
At the downstream side of the lower case, the heater core, the rear case, and the heat duct are sequentially assembled.

As described above, according to the present invention, since the assembling can be performed by the stacking method from above, the mounting of the evaporator in the case,
Assembly of the branch duct and the like becomes easy.

In addition, since the above-described stacking method can be adopted, automatic assembling on an assembling line can be performed.

(Effect)

Therefore, according to the present invention, it is possible to provide an indoor unit of an air conditioner in which the case, the evaporator, the branch duct, and the like can be easily assembled and the assembly line can be automated.

〔Example〕

First Embodiment An indoor unit of an air conditioner according to an embodiment of the present invention will be described with reference to FIGS. 1 to 4B.

In the indoor unit of this example, as shown in FIG. 1, the case is composed of a lower case 1 on which an evaporator 15 is mounted from above and an upper case 2 connected to the lower case 1.
And a rear case 50 connected to the downstream side of the lower case 1. The vent differential branch duct 3 is connected to the upper case 2, and the heat duct 56 is connected to the downstream side of the rear case 50. Heater core 16 is lower case 1
Attach to the rear.

As shown in FIG. 1, an evaporator fixing part 101 for fixing the evaporator 15 and a heater core fixing part for fixing the heater core 16 are provided at the bottom of the lower case 1.
It has 102. In addition, a drain port on the bottom of the lower case 1 for removing water droplets condensed on the surface of the evaporator 15
104 and an inclined portion 11 for preventing the water droplets from scattering.

In addition, as shown in FIG.
A heat damper 25 is provided above the M damper 18 and the rear case 50, and a vent damper 35 and a differential damper 36 are provided in the bent differential branch duct 3. A vent differential duct 4 is provided on the vent differential branch duct 3.

In FIG. 1, the connection between the lower case and the upper case 2 is indicated by an arrow A, the connection between the upper case 2 and the bent differential branch duct 3 is indicated by an arrow B, and the bent differential branch duct 3 and the bent differential duct 4 are connected together. The connection is indicated by arrow C. In addition, lower case 1
An arrow D indicates the connection between the upper case 1 and the rear case 50, and an arrow E indicates the connection between the upper case 1 and the heat duct 56.

Next, a method of assembling the indoor unit will be described with reference to FIG.

First, the insulator 12 is put into the lower case 1 from above and fixed. Next, the evaporator 15 is mounted on the insulator 12 from above and fixed. Further, the A / M damper 18 is rotatably mounted on the upper part in the lower case 1. Then, the upper case 2 is connected to and joined to the lower case 1 so as to cover them. Also, on the upper part of the upper case 2,
The side vent dampers 21, 21, the heat damper 25, and the cool air bypass damper 26 are rotatably assembled.

Next, the vent differential branch duct 3 is covered on the upper case 2, and both are connected and joined. Further, a differential damper 35 and a vent damper 36 are rotatably mounted on the upper part of the bent differential branch duct 3. After that, the branch duct 3 is covered with a bent differential duct 4 and joined.

Then, as shown in the lower right of FIG. 2, the heater core 1 is placed on the heater core fixing portion 102 on the downstream side of the lower case 1.
Place 6 and fix. Next, the rear case 50 is attached to the downstream side of the lower case 1 and the heat duct 56 is attached to the rear case 50 in that order. The upper part of the heat duct 56 is connected to the upper case 2.

Thus, the indoor unit shown in FIG. 1 is completed.

In addition, the means for rotatably mounting the damper is
This will be described with reference to FIGS. 3 to 4B.

That is, in the means shown in FIG. 3, first, shaft holes 701, 702 are provided in bearing plates 70, 70 for supporting the damper 71, respectively. Then, one end 712 of the shaft 711 of the damper 71 is
Plug into 1. Then, the shaft hole at the other end of the shaft 711
The shaft hole 702 is inserted into the 713, and the pin 73 of the bearing pin 73 is inserted.
Insert 1. At this time, the engaging tongue 7 provided on the bearing pin 73
32 are simultaneously inserted into the shaft hole 702 and locked in the shaft hole 702. Thus, the damper 71 is rotatably attached to the support plate 70.

The means shown in FIGS. 4A and 4B
A shaft hole 706 having an opening 705 opening upward is provided. On the other hand, the shaft 76 of the damper 75 has a rotating arm 77
Install. Next, while the one end 761 of the shaft 76 is inserted into the shaft hole 706, the flat plate portion 762 at the end portion is
Insert into 05. Next, it moves in the direction of arrow A, attaches the other end 763 to the shaft hole 706, and rotates in the direction of B. Thus, the damper 75 is rotatably attached to the support plate 70.

Next, an example in which the position of a component is changed, the component is omitted, and the like are described with respect to the component assembly of the first embodiment.

Second Embodiment In this embodiment, as shown in FIG. 5, the side vent damper 21 attached to the upper case 2 in the first embodiment is not attached.

Third Embodiment In this embodiment, as shown in FIG. 6, the cool air bypass damper 26 attached to the upper case 2 in the first embodiment is not attached.

Fourth Embodiment In this embodiment, as shown in FIG. 7, the cool air bypass damper 26 attached to the upper case 2 in the first embodiment is moved to the vent differential branch duct 3 and attached.

Fifth Embodiment In this embodiment, as shown in FIG. 8, the insulator 12 attached to the upper case 2 in the first embodiment is not attached.

[Brief description of the drawings]

1 to 4B show the indoor unit of the first embodiment, FIG. 1 is a longitudinal sectional view thereof, FIG. 2 is an exploded perspective view showing an assembling sequence, and FIG. 3 is an explanatory view of assembling a damper. 4A and 4B
FIG. 5 is an explanatory view of the installation of another damper, FIG. 5 is an explanatory view of the installation in the indoor unit of the second embodiment, FIG. 6 is an explanatory view of the installation in the indoor unit of the third embodiment, and FIG. 4
FIG. 8 is an explanatory view of the assembly in the indoor unit of the embodiment, FIG. 8 is an explanatory view of the assembly in the indoor unit of the fifth embodiment, FIG.
The figure is an exploded perspective view of a conventional indoor unit. 1 ... lower case, 15,95 ... evaporator, 16,96 ... heater core, 18 ... A / M damper, 2 ... upper case, 3 ... bent differential branch duct, 4 ... bent differential damper, 50 ... ... rear case, 56 ... heat duct, 71,75 ... damper, 70 ... support plate,

──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Tomoki Orihara 1-1-1, Showa-cho, Kariya-shi, Aichi Japan Inside Denso Co., Ltd. (56) References Japanese Utility Model Showa 60-169013 (JP, U) Japanese Utility Model Showa 51- 55547 (JP, U) Japanese Utility Model Showa 60-20405 (JP, U) Japanese Utility Model Showa 61-145017 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B60H 1/00 102

Claims (1)

(57) [Claims] In an indoor unit of an air conditioner having an evaporator, a heater core, and the like assembled in a case, the case includes a lower case in which the evaporator is mounted from above, an upper case connected to the lower case, It is divided into three parts: a lower case connected to the downstream side of the lower case, a branch duct above the upper case, and a heat duct downstream of the rear case. In the assembly line, after the evaporator is mounted from above in the lower case, the upper case and the branch duct can be stacked and assembled in that order, and the heater core is installed downstream of the lower case. An indoor unit for an evaporator, wherein the rear case and the heater duct are sequentially assembled.