JPH0594623U - Air conditioner - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent hot air from the heater from being blown to the end surface of the heat insulating material, and to reduce the number of steps and cost. [Structure] A rib 5 integrally formed with a top plate 1A (sheet metal) is provided between the end surface of the heat insulating material 2 and the heat exchanger 3 and the heater 4. The rib 5 can prevent the end surface of the heat insulating material 2 from being heated by the hot air of the heater 4.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an air conditioner having a heater.

[0002]

[Prior Art]

 An air conditioner provided with an electric heater as a heating auxiliary heat source between a heat exchanger and a blower is disclosed in Japanese Utility Model Laid-Open No. 3-57322. FIG. 4 shows a cross-sectional view of the vicinity of the electric heater of the air conditioner.

As shown in FIG. 1, a heat insulating material 2 is attached to the back surface of the outer peripheral portion of the top plate 1A of the casing 1 and the back surface of the side plate 1B. The heat insulating material 2 is made of styrene or the like and prevents dew condensation on the casing 1. Further, a heat exchanger 3 is attached to a part of the heat insulating material 2, and the space surrounded by the heat insulating material 2 and the heat exchanger 3 forms a ventilation path 6.

An electric heater 4 (hereinafter referred to as a heater) is arranged between the blower 9 and the heat exchanger 3. The other end of the electric heater 4 is directly attached to the back surface of the top plate 1A. Therefore, the air blown from the blower 9 is heated by the heater 4 and then sent to the heat exchanger 3. At this time, the end surface of the heat insulating material 2 is heated by the hot air, but since the heat insulating material 2 itself has heat resistance up to about 70 ° C., there is no problem during normal operation.

However, in the manufacturing stage of the air conditioner, the heat resistance test of the heat insulating material 2 is conducted by raising the hot air temperature of the heater 4 to about 200 ° C. from the viewpoint of improving reliability. Therefore, under such conditions, the heat insulating material 2 may be deformed or deteriorated by the hot air.

Therefore, in the conventional air conditioner, as shown in FIG. 5, the aluminum tape 20 is attached to the end surface of the heat insulating material 2 and the peripheral portion thereof.

[0007]

[Problems to be solved by the device]

 However, in such a method, the step of attaching the aluminum tape becomes indispensable, which is not preferable from the viewpoint of reducing the number of steps.

On the other hand, a method of using a material having a heat resistance of 200 ° C. or higher as the heat insulating material is considered as a solution. However, it is clear that selecting and using such a special material also causes a cost increase and cannot be an essential solution to the problem.

The present invention has been made in view of such problems, and an object thereof is to provide an air conditioner having a simple heat resistant structure.

[0010]

[Means for Solving the Problems]

 In the device according to the first aspect, the heat shield member is provided between the end surface of the heat insulating material and the heater.

According to the second aspect of the invention, the rib integrally formed with the top plate is used as the heat shield member.

[0012]

[Action]

 The heat shield member in claim 1 and the rib in claim 2 prevent the hot air sent from the heater from reaching the end surface of the heat insulating material.

[0013]

【Example】

 FIG. 1 is a sectional configuration diagram of an air conditioner 100 according to an embodiment of the present invention. Inside the casing 1, a heat insulating material 2, a heat exchanger 3, a heater 4, a drain pan 8, a blower 9 and the like are provided. The air conditioner 100 also includes a decorative panel 14. The decorative panel 14 is attached to the main body of the casing 1, and a ventilation port 15 is provided in the peripheral portion thereof and an air suction port 16 is provided in the central portion thereof.

The blower 9 sucks air through the air suction port 13 and sends the air to the heater 4 side. The flow of the air leaving the blower 9 is as shown by the arrow in FIG. 1, and this point is the same as the conventional technique.

FIG. 3 is an enlarged view of a portion 10 surrounded by a chain line in FIG. In this air conditioner 100, ribs 5 are integrally provided on a portion of the top plate 1A, that is, a portion facing the space between the end surface of the heat insulating material 2 (or the heat exchanger 3) and the heater 4. Moreover, the rib 5 is formed in a V-shape so that the end surface of the heat insulating material 2 is completely covered when viewed from the heater 4 side. Here, since the casing 1 main body is formed of sheet metal, it is easy to form such a V-shaped rib 5 inside the top plate 1A.

On the other hand, FIG. 2 is a schematic plan view of the air conditioner 100 for clarifying the positional relationship between the heat exchanger 3 and the heater 4 and the rib 5. As shown in the figure, the heat exchanger 3 is attached to the top plate 1A via attachment plates (not shown in this figure) at three locations around the four corners. Therefore, the rib 5 is not formed at the three portions. Here, FIG. 4 is shown to make this point clearer. This figure corresponds to a plan view including the disconnection line II-II shown in FIG. That is, the heat exchanger 3 is supported by the L-shaped attachment plates 17 attached to the top plate 1A at the above-mentioned three locations. Moreover, since the end surface of the heat insulating material 2 is covered by the mounting plate 17, the end surface of the heat insulating material 2 is not directly heated by the hot air from the heater 4. Therefore, it is not necessary to provide the rib 5 at the three portions. Note that FIG. 1 corresponds to a cross-sectional view taken along the line I-I shown in FIG.

Here, the rib 5 functions as follows. That is, the rib 5 reflects the hot air blown from the heater 4 and prevents the hot air from being blown to the end surface of the heat insulating material 2. As a result, even when a reliability test for raising the hot air temperature from the heater 4 to 200 ° C. or higher is performed on the manufacturing line, the heat insulating material 2 can be prevented from being deformed or deteriorated. The rib 5 also has a function as a reinforcing member for the top plate 1A.

In the present embodiment, the rib 5 formed integrally with the top plate 1A (sheet metal) is used as the heat shield member, but the present invention is not limited to such rib 5. For example, use a thin metal plate having a U-shaped cross section, which is attached to a predetermined position of the top plate 1A so as to be arranged between the end surface of the heat insulating material and the heater, as a heat shield member instead of the rib. Is also possible. In this case, the process of attaching the metal plate to the predetermined position of the top plate 1A is required in advance, but this process is easier than the process of the conventional technology (pasting aluminum tape), and the number of processes is reduced. Can contribute to.

[0019]

[Effect of the device]

  In the inventions according to the first and second aspects, it is possible to prevent the hot air from the heater from being blown to the end surface of the heat insulating material. Moreover, since it is possible to easily form a member capable of exhibiting such a heat-shielding effect, the present invention has an effect of reducing the number of manufacturing steps.

In particular, in the invention according to claim 2, since the rib is already formed integrally with the top plate, the number of steps for mounting the rib is not required. In this respect, the present invention has an effect of greatly contributing to the reduction of man-hours. Further, according to the present invention, the cost of the heat-insulating member only needs to be the mold cost for integrally forming the ribs, so the present invention can contribute to the cost down of the air conditioner.

Further, the present invention has not only the effect of blocking heat but also the effect of reinforcing the top plate.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an air conditioner that is an embodiment of the present invention.

FIG. 2 is a plan view of an air conditioner that is an embodiment of the present invention.

FIG. 3 is an enlarged cross-sectional view of a heater peripheral portion of an air conditioner according to an embodiment of the present invention.

FIG. 4 is an enlarged cross-sectional view showing a portion in which the rib of the air conditioner according to the embodiment of the present invention is not formed.

FIG. 5 is an enlarged cross-sectional view of a heater peripheral portion in a conventional air conditioner.

[Explanation of symbols]

 1 Casing 1A Top plate 2 Heat insulating material 3 Heat exchanger 4 Heater 5 Rib 9 Blower

Claims (2)

[Scope of utility model registration request] 1. A blower, a heat insulating material attached to a predetermined surface of a top plate, a heat exchanger attached to the heat insulating material, and a heater arranged between the blower and the heat exchanger. An air conditioner comprising: a heat insulating member provided between an end surface of the heat insulating material and the heater. 2. The air conditioner according to claim 1, wherein the heat shield member is a rib integrated with the top plate.