JP3039079B2 - Heat exchange ventilator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchange ventilator,
More specifically, the present invention relates to a heat exchange ventilator for exchanging heat between air introduced into a room from the outside and air exhausted from a room to the outside.

[0002]

2. Description of the Related Art Conventionally, in order to reduce energy required for air conditioning in a room and to realize comfortable air conditioning, air introduced from the outside into the room and air discharged from the room to the outside have been used. A heat exchange ventilator is used in which heat is exchanged between the air and the outdoor air is introduced into the room in a state where the temperature difference with the indoor air is reduced.

For example, in a heat exchange ventilator disclosed in Japanese Patent Application Laid-Open No. 1-147240, as shown in FIG.
A casing 50 forming an outer shell of the apparatus includes a top plate 50a and a bottom plate 50b extending substantially to the left and right, and an air supply fan 51 for introducing outdoor air between the two, and a discharge fan 51 for discharging indoor air. It has an exhaust fan 52 and a total heat exchanger 53 for exchanging heat between outdoor air and indoor air to be exhausted.

Although not specifically shown, the total heat exchanger 53 is provided with a wave-shaped separator, for example, with a heat exchange element formed in the shape of a flat plate made of Japanese paper or the like interposed therebetween to form a wave direction. Are alternately laminated so as to be substantially orthogonal to each other, and one of the paths 53 through which the outdoor air flows.
a, and the other path 53b separated from the one path 53a through which room air flows. When the outdoor air and the indoor air flow through the paths 53a and 53b, total heat exchange is performed between the elements.

[0005] The casing 50 includes an upstream air supply duct 54 disposed upstream of one of the paths 53a of the total heat exchanger 53 and a downstream air supply duct 55 disposed downstream. The outdoor air that is connected and guided from the outside via the upstream air supply duct 54 reaches the downstream air supply duct 55 via the air supply fan 51 through one path 53 a of the total heat exchanger 53. Flow through the air supply path P1.

On the other hand, the casing 50 has an upstream exhaust duct 56 disposed upstream of the other path 53b of the total heat exchanger 53 and a downstream exhaust duct 57 disposed downstream. The room air that is connected and guided from the room to be ventilated through the upstream exhaust duct 56 passes from the exhaust fan 52 to the downstream exhaust duct 57 through the other path 53 b of the total heat exchanger 53. The gas flows through the exhaust path P2.

[0007] According to the above configuration, the indoor air is supplied to the room through one path 53a of the total heat exchanger 53, and the indoor air is exhausted outside through the other path 53b. As a result, the load on the air conditioner can be reduced both in summer and winter. Here, the total heat exchanger 53 has one path 53a and the other path 53a.
b so that the air volume ratio with b is substantially equal.
Of the casing 50 is inclined at approximately 45 ° with respect to the bottom plate 50b of the casing 50.

[0008]

As described above, in the above-mentioned conventional total heat exchanger 53, the inclination angle of the inlet face a of the one path 53a with respect to the bottom plate 50b of the casing 50 is set to approximately 45 °. Therefore, the total heat exchanger 53 is disposed in the casing 50 with the diagonal line of the end face substantially along the vertical line. As a result, the vertical dimension of the casing 50 is increased, and the entire apparatus is correspondingly increased in size. There was a problem. Further, when the heat exchange ventilator is arranged in a place where the mounting space above and below the ceiling is narrow vertically, the total heat exchanger 53 having a desired size cannot be arranged. As a result, there is a problem that the manufacturing cost of the apparatus itself and the construction cost for installing the apparatus are required.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a heat exchange ventilator that can be reduced in size in the vertical direction and that can reduce costs.

[0010]

In order to solve the above problems, a heat exchange ventilator according to the present invention comprises a casing having a bottom plate mounted on a ceiling plate, and a casing mounted on the bottom plate in the casing. A heat exchange ventilator provided with a heat exchanger having a substantially quadrangular prism shape having an air supply inlet surface for air to be exchanged with heat and an exhaust inlet surface, wherein the bottom plate of the air supply inlet surface or the exhaust inlet surface is provided. 13 ° to 30 °
And the air supply / exhaust air volume ratio or the exhaust gas / air supply air volume ratio is set in a range of 0.9 to 1.

[0011]

According to the heat exchange ventilator having the above-described structure, the inclination angle of the air supply inlet surface or the exhaust gas inlet surface of the heat exchanger with respect to the bottom plate is in the range of 13 ° to 30 °. / Exhaust air volume ratio or exhaust / supply air volume ratio is set in the range of 0.9 to 1. Therefore, it is possible to keep the height of the heat exchanger low while minimizing the decrease in the air volume of the heat exchanger. it can.

[0012]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is an enlarged view of a main part of a heat exchange ventilator 10 according to one embodiment of the present invention. Referring to FIG. 1, the heat exchange ventilation device 10 is a so-called ceiling-mounted type that is mounted on a ceiling plate, and includes a casing 11 that forms an outer shell of the device 10. The casing 11 includes a top plate 11a and a bottom plate 1 extending substantially to the left and right.
1b, and a total heat exchanger 12
Is detachably accommodated.

In the casing 11, an air supply passage P1 for outdoor air introduced by an air supply fan (not shown) and an exhaust path P2 for indoor air exhausted by an exhaust fan (not shown) are formed. . On the other hand, the total heat exchanger 12
Has a first path A1 and a second path A2 which are orthogonal to each other, one of the paths A1 forms a part of the air supply passage P1, and the other path A2 is a part of the exhaust passage P2. Is formed. Thereby, the total heat exchanger 12 can cause heat exchange between the outdoor air introduced by the air supply fan and the indoor air exhausted by the exhaust fan. In addition, the entrance surfaces 12a, 1 of the respective routes A1, A2
2b, filters F1 and F2 are detachably provided. The end face of the total heat exchanger 12 has a total heat exchanger 1
A handle 12c for facilitating taking in and out of the handle 2 is attached.

In the above configuration, the total heat exchanger 12 has an air inlet surface 12a at a predetermined angle (element inclination angle) θ between itself and the bottom plate 11b of the casing 11.
(In the present embodiment, 16 °), it is placed in the casing 11. This inclination angle θ is 13 ° to
The air supply / exhaust air volume ratio R1 shown in FIG. 3 is set to fall within a range of 0.9 to 1. Thus, the height H of the heat exchanger 12 can be kept low.

FIG. 2 shows the exhaust inlet surface 1 of the total heat exchanger 12.
2b is placed in the casing 11 with a predetermined inclination angle θ (16 ° in the present embodiment) provided between the casing 2 and the bottom plate 11b of the casing 11. This inclination angle θ is 13
3 to 30 °, and the exhaust / supply air volume ratio R2 shown in FIG. 3 is set to be in the range of 0.9 to 1. Thus, the height H of the heat exchanger 12 can be kept low also in the embodiment of FIG.

As described above, according to the heat exchange ventilator of this embodiment, the inclination angle of the supply inlet surface 12a or the exhaust inlet surface 12b of the heat exchanger 12 with respect to the bottom plate is set to 13
° to 30 °, and the air supply / exhaust air volume ratio R1 or the exhaust air / air supply air volume ratio R2 is set to a range of 0.9 to 1, so that the air volume of the heat exchanger 12 is reduced. The height of the heat exchanger 12 can be kept low while keeping it to a minimum. As a result, the vertical dimension of the entire apparatus can be shortened, and the installation conditions of the heat exchange ventilator are eased. Also in the case of disposing the apparatus, the total heat exchanger 12 having a desired size can be disposed, and there is an advantage that the manufacturing cost of the apparatus itself and the construction cost for installing the apparatus are reduced.

It should be noted that each of the above-described embodiments is merely an example of a preferred embodiment of the present invention, and it goes without saying that various design changes can be made within the scope of the present invention.

[0018]

As described above, according to the heat exchange ventilator of the present invention, the inclination angle of the supply inlet or exhaust inlet surface of the heat exchanger with respect to the bottom plate is in the range of 13 ° to 30 °. And the air supply / exhaust air volume ratio or the exhaust air / air supply air volume ratio is set in the range of 0.9 to 1, so that the air flow of the heat exchanger can be minimized and the heat The height can be kept low. As a result, the vertical dimension of the entire apparatus can be shortened, and the installation conditions of the heat exchange ventilator are eased. Also in the case of arranging the apparatus, it is possible to arrange the total heat exchanger of a desired size, and there is an advantage that the manufacturing cost of the apparatus itself and the construction cost for installing the apparatus are reduced.

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional view of a main part of a heat exchange ventilation device according to an embodiment of the present invention.

FIG. 2 is a schematic cross-sectional view of a main part of a heat exchange ventilation device according to another embodiment of the present invention.

FIG. 3 is a graph showing a setting range of an inclination angle of a supply air inlet surface of the heat exchanger with respect to the bottom plate in the embodiment of FIG. 1;

FIG. 4 is a graph showing a setting range of an inclination angle of an exhaust inlet surface of the heat exchanger with respect to the bottom plate in the embodiment of FIG. 2;

FIG. 5 is a schematic sectional view of a conventional heat exchange ventilator.

[Explanation of symbols]

 Reference Signs List 10 heat exchange ventilator 11 casing 11b bottom plate 12 heat exchanger 12a supply air inlet surface 12b exhaust air inlet surface θ element inclination angle

Claims (1)

(57) [Claims] 1. A casing (11) having a bottom plate mounted on a ceiling plate, and an air supply inlet for air mounted on the bottom plate (11b) in the casing (11) and to be heat-exchanged with each other. In a heat exchange ventilator provided with a heat exchanger (12) having a substantially quadrangular prism shape having a surface (12a) and an exhaust inlet surface (12b), the heat exchange ventilator includes an air inlet vent surface (12a) or an exhaust inlet surface (12b). The inclination angle (θ) with respect to the bottom plate (11b) is in the range of 13 ° to 30 °, and the supply / exhaust air volume ratio (R1) or the exhaust / supply air volume ratio (R2) is 0.9 to 0.95. A heat exchange ventilator, wherein the heat exchange ventilator is set in a range of 1.