JPH09126514A - Heat exchanger and its peripheral device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve lower production costs by sandwiching a heat exchange element between frame bodies made of a foam resin and split at least in two vertically to simplify a production process and provide a lightweight product with higher thermal insulation utilizing the roam resin as material of the frame body. SOLUTION: Roughly parallelogrammic heat exchange plates 1 which are able to transfer heat with a passing orientation are laminated while being made orthogonal to each other and the heat exchange plates 1 laminated are grasped at an edge line and the front and rear thereof by a support rail 4 and front and rear support plates 3 to form a heat exchange element 2 and a holding part is provided corresponding to outline dimensions of the heat exchange element 2 or the front and rear support plates 3 to make a frame body molded by a foam resin and at least split vertically.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger used for a heat exchange type ventilation fan and the like and peripheral devices thereof.

[0002]

2. Description of the Related Art The structure of a conventional heat exchanger and its peripheral devices is shown in FIGS.
The heat exchange element 102 is formed by stacking a plurality of 01 while alternately staggering them by 90 degrees. Alternatively, the sheet metal frame 103 has a rail 1 for supporting the ridgeline of the heat exchange element 102 on the lower surface.
04 and a support rail 10 for positioning the heat exchange element on the side surface
5, a holding rail 106, and a screw hole 107 for fixing were provided, and a heat insulating material 108 was attached to the periphery.

Further, the inspection lid 111 fitted on the lower surface of the air conditioner main body 110 is provided with a square hole 112 at the center and both ends thereof are raised in a U shape so that a fitting portion 113 with the air conditioner main body 110 is formed.
And had

Further, the drain pan 114 is attached so as to come to a position below the drain hole of the inspection lid.

In the above structure, the heat exchange element 102 has four
A rail 10 which is inclined 5 degrees and whose ridge is provided on the lower surface of the sheet metal frame 103
4 is placed on a positioning support rail 105 provided on the side surface of the heat exchange element 102, and the heat exchange element 102 is fixed by a plurality of screws 109 so that the heat exchange element 102 is sandwiched by the holding rail 106 and the positioning support rail 105. Exchange element 10
2 was held and heat exchange was performed.

Further, the frame 103 is assembled in the air conditioner body 110 so that the opening is on the lower surface, and the drain pan 11
The inspection lid 111 integrated with the No. 4 was attached to the main body by the fitting portion 113 to perform heat exchange.

[0007]

In such a conventional heat exchanger, the box-shaped sheet metal frame 103 is formed in the manufacturing process, the heat exchange element 102 is put in the sheet metal frame 103, and the heat exchange element 102 is held. The holding rail 106 for mounting is attached with a plurality of screws 109, and the heat insulating material 108 must be attached to the side surface of the sheet metal frame 103 in order to prevent dew condensation due to heat exchange, resulting in high manufacturing cost and stacking a plurality of heat exchange plates 101. Then, when the formed heat exchange element 102 is put into the sheet metal frame 103, the heat exchange element is deformed unevenly, or the heat exchange plate 101 is scattered, which causes a problem of poor workability.

There is also a problem that the weight of the air conditioner body 110 is increased due to the sheet metal.

Since the inside of the frame 103 is flat,
Condensation water formed inside the air conditioner main body 110 is dropped along the entire inner wall of the main body, and the fitting portion 11 between the inspection lid 111 integrated with the drain pan 114 and the air conditioner main body 110 is formed.
Also in No. 3, there was a problem that dew condensation water flowed out and wetted the ceiling surface.

Further, the drain pan 1 provided on the inspection lid 111
The rectangular hole 112 that does not pass through 14 does not allow the rectangular hole having the same shape as the drain pan 114 to be formed in order to maintain the strength of the inspection lid 111, and is provided in the center. Therefore, the dew condensation water formed inside the air conditioner body 110 is transmitted to the inner wall of the air conditioner body 110 and is inspected before flowing into the square hole 112 provided in the central portion of the inspection lid 111 integrated with the drain pan 114. There was a problem such as seeping out to the outside of the lid 111 and wetting the ceiling surface.

Further, the fitting portion 113 of the inspection lid 111 has a tight fitting dimension so that there is no air leakage or water leakage when attached to the air conditioner body 110, so that the air conditioner body 110 and the drain pan 114 can be connected to each other. There is a problem that when the integrated U-shaped inspection lid 111 is fitted, it is very difficult to work at a high place on the ceiling surface.

The present invention solves the above-mentioned problems, and by sandwiching a heat exchange element into a foamed resin molded frame body that is divided into at least two upper and lower parts, the manufacturing process is simplified, the manufacturing cost is reduced, and the frame body is manufactured. The first purpose is to improve heat insulation and reduce product weight by using foamed resin as the material.

A second object of the present invention is to provide a protrusion on the inside of a frame made of foamed resin to regulate the flow of dew condensation water and improve the capacity of treating dew condensation water.

A third object is to provide a drain hole in the vicinity of the fitting portion of the inspection lid with the main body so as to communicate with the drain pan to prevent the dew condensation water from seeping out while maintaining the strength of the inspection lid. To improve the processing capacity.

A fourth object is to simplify the mounting of the inspection lid and the air conditioner main body by forming the main body of the inspection lid on the inclined surface.

[0016]

In order to solve this problem, the present invention provides a support rail and a front-rear support plate by stacking substantially quadrilateral heat exchange plates having heat conductivity and passage direction while making them substantially orthogonal to each other. A heat exchange element formed by sandwiching the ridgeline and the front and back of the laminated heat exchange plates with each other, and a holding portion corresponding to the outer dimensions of the heat exchange element or the front and rear support plates are provided, and at least a vertically divided frame of foamed resin molding It is configured to fit into the body.

As a result, the manufacturing process can be simplified, the manufacturing cost can be reduced, and the heat insulation can be improved and the product weight can be reduced by using the foamed resin as the material of the frame.

Further, a projecting portion is formed on the inner side surface of the frame so as to form a downward slope.

As a result, the flow of the dew condensation water can be regulated and the processing capacity of the dew condensation water can be improved.

Further, an inspection cover fitted to the lower surface of the air conditioner main body on which the heat exchanger is mounted, and a drain pan further below the inspection cover are provided. The inspection pan is connected to the drain pan near the main body fitting portion. It is configured to provide a drain hole for

As a result, while maintaining the strength of the inspection lid,
It is possible to prevent the condensed water from seeping out and further improve the processing capacity.

Further, the main body fitting portion of the inspection lid is formed to have an inclined surface. As a result, the inspection lid and the air conditioner body can be easily attached.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention is one in which substantially quadrangular heat exchange plates having heat conductivity and passage direction are laminated while being substantially orthogonal to each other, and the support rail and the front and rear support plates are used. A heat exchange element formed by sandwiching the ridgeline and the front and back of the laminated heat exchange plates, and a holding portion corresponding to the outer dimensions of the heat exchange element or the front and rear support plates are provided, and at least a vertically divided frame made of foamed resin molding It has the effect of simplifying the manufacturing process, reducing the manufacturing cost, and using foamed resin for the frame to improve the heat insulating property and reduce the weight of the product.

According to the second aspect of the present invention, a protrusion that forms a downward slope is provided on the inner surface of the frame, and the flow of the condensed water is regulated to improve the treatment capacity of the condensed water. Have.

According to a third aspect of the present invention, an inspection cover fitted to the lower surface of the air conditioner main body on which the heat exchanger is mounted and a drain pan further below the inspection cover are provided, and the main body of the inspection cover is fitted. A drain hole communicating with the drain pan is provided in the vicinity of the joint portion, and has an effect of preventing the dew condensation water from seeping out and further improving the processing capacity.

The invention according to claim 4 is characterized in that the main body fitting portion of the inspection lid is formed as an inclined surface, and has an effect that the inspection lid and the air conditioner main body can be easily attached.

Embodiments of the present invention will be described below with reference to FIGS. 1 to 7. (Embodiment 1) FIG. 1 shows an assembled state of a heat exchanger. In FIG. 1, heat exchange elements 2 are formed by stacking heat exchange plates 1 having a substantially quadrangular shape having heat conductivity and passage direction while making them substantially orthogonal to each other. To do. A support rail 4 is provided on the support plate 3, and a mounting surface 6 having a screw hole 5 in parallel with the support plate 3 is provided on the support rail 4.
Is provided. The support plate 3 is provided with a screw hole 7 diagonally to the support rail 4. The lower foam frame 8 of the foam resin molded frame divided into upper and lower parts has a passage port 9 for air supply or exhaust,
The support surface 10 has a holding portion 11a at an angle of 45 degrees with respect to the bottom surface.
And the upper foam frame 12 has a passage port 9 for air supply or exhaust.
The heat exchanging element 2 is provided with a holding portion 11b symmetrical to the holding portion 11a corresponding to the front and rear support plates.

With the above construction, the laminated heat exchange plates 1 are sandwiched between the support rail 4 and the front and rear support plates 3 at the ridge and front and back, and the screw holes 5 of the mounting surface 6 of the support rail 4 and the screw holes 7 of the partition plate are aligned. The heat exchange element 2 is formed by fixing with the screw 13. After fitting the heat exchange element 2 along the holding portion 11a of the lower foam frame 8 with the ridgeline of the heat exchange element 2 facing downward,
The heat exchanger can be held by covering the upper foam frame 12 with the upper foam frame 12 from above and by sandwiching the upper foam frame 12 and the lower foam frame 8 with the holding portions 11a and 11b.

As the foamed resin material, foamed polyethylene, foamed polypropylene, and vinylidene chloride foam can be considered in addition to the most representative foamed polystyrene, but a composition having an air layer or stainless steel having a low thermal conductivity may be used. Needless to say, the point is that there is no difference in action and effect as long as the material has a sufficient heat insulating property.

(Embodiment 2) FIG. 2 shows a foamed resin frame body which is divided into upper and lower parts in a state where a heat exchanger is incorporated, and in FIG. A protrusion 1 that forms a downward slope on the inner surface of the frame body
4 are provided.

FIG. 3 shows a state in which the heat exchanger, the inspection lid and the drain pan are incorporated in the air conditioner main body.
An inspection lid 16 is provided on the foamed resin frame portion of the lower surface of 5,
A drain pan 17 is attached to and integrated with the inspection lid 16.

FIG. 4 shows a state in which a foamed resin frame body, which is divided into upper and lower parts in a state where a heat exchanger is incorporated, is incorporated in the air conditioner main body. Attaches the drain pan 17 to be integrated.

With the above structure, the dew condensation water 18 generated in the heat exchange element 2 is dropped along the foam frame supporting surface 10, and the flow of the dew condensation water 18 is regulated by the protrusion 14 forming the slope to form a triangular shape. Along the slope of the protruding portion 14, the fluid flows to the central portion of the foam frame body and flows into the drain pan 17 provided at the lower portion of the foam resin frame body.

(Third Embodiment) FIG. 5 shows the relationship between the main body of the air conditioner and the inspection lid and drain pan, and FIG. 6 shows the state in which condensed water flows through the inspection lid and drain pan.

In FIG. 5, an inspection lid 16 is fitted on the lower surface of the air conditioner main body 15, a drain pan 17 is provided on the lower surface of the inspection lid 16, and the inspection lid 16 communicates with the drain pan 17 at the center. The opening 19 and the air conditioner body 15
A drain hole 21 is provided in the vicinity of the fitting portion 20 of the.

In FIG. 6, the dew condensation water 18 from the inside of the air conditioner main body 15 travels along the side surface and drops on the drain pan 17 through the drain hole 21 provided in the inspection lid 16.

(Embodiment 4) FIG. 7 shows an air conditioner main body and an inspection lid, and in FIG. 7, the main fitting portion of the inspection lid 16 for inspecting the heat exchanger attached to the lower surface of the air conditioner main body 15 is located outside. Formed on a slope with an angle.

With the above structure, when the inspection lid 16 is attached to the main body, the slope is raised and the lift lid is aligned with the lower surface of the air conditioner main body 15. Therefore, even if the work is rough, the inspection lid 16 can be surely attached. .

[0039]

As described above, according to the present invention, it is possible to simplify the manufacturing process, reduce the manufacturing cost, and use the foamed resin as the material of the frame to improve the heat insulating property and reduce the weight of the product. Is obtained.

Further, there is an advantageous effect that the flow of the dew condensation water is regulated and the capacity of treating the dew condensation water is improved.

Further, there is an advantageous effect that the strength of the inspection lid can be maintained and the processing capacity of the condensed water can be further improved.

Further, there is an advantageous effect that the air conditioner main body and the inspection lid are easily attached.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an assembled state of a heat exchanger according to a first embodiment of the present invention.

FIG. 2 is an external perspective view showing a foamed resin frame body that is divided into upper and lower parts in a state where a heat exchanger according to a second embodiment of the present invention is incorporated.

FIG. 3 is an external perspective view showing a state in which a heat exchanger, an inspection lid and a drain pan are incorporated in the same air conditioner body.

FIG. 4 is a cross-sectional view of essential parts showing a state in which a foamed resin frame body that is divided into upper and lower parts in a state where the heat exchanger is incorporated is incorporated in the air conditioner body.

FIG. 5 is a perspective view showing a relationship among an air conditioner body, an inspection lid, and a drain pan according to Embodiment 3 of the present invention.

FIG. 6 is a partial cross-sectional view showing a state in which condensed water flows through the inspection lid and the drain pan.

FIG. 7 is a partial cross-sectional view showing an air conditioner main body and an inspection lid and a drain pan in which a main body fitting portion is formed of an inclined surface according to a fourth embodiment of the present invention.

FIG. 8 is a structural perspective view showing an assembled state of a conventional heat exchanger.

FIG. 9 is an external perspective view showing the sheet metal frame with the heat exchanger incorporated therein.

FIG. 10 is a sectional view of an essential part showing a state where the sheet metal frame with the heat exchanger incorporated therein is incorporated into the air conditioner body.

FIG. 11 is a perspective view showing the relationship between the air conditioner body, the inspection lid, and the drain pan.

FIG. 12 is a cross-sectional view of parts showing the air conditioner body, an inspection lid provided with a U-shaped bend, and a drain pan.

[Explanation of symbols]

 1 Heat Exchange Plate 2 Heat Exchange Element 3 Support Plate 4 Support Rail 8 Lower Foam Frame 10 Supporting Surface 11a Holding Part 11b Holding Part 12 Upper Foaming Frame 14 Projection Part 15 Air Conditioner Main Body 16 Inspection Cover 17 Drain Pan 20 Fitting Part 21 drain hole

Claims (4)

[Claims] 1. A substantially quadrilateral heat exchange plate having heat conductivity and passage direction is laminated while being substantially orthogonal to each other, and a support rail and front and rear support plates sandwich the ridge line and front and rear of the laminated heat exchange plates. The formed heat exchange element and a holding portion corresponding to the outer dimensions of the heat exchange element or the front and rear support plates are provided,
A heat exchanger composed of at least an upper and lower divided frame made of foamed resin. 2. The heat exchanger according to claim 1, wherein a protrusion that forms a downward slope is provided on the inner surface of the frame. 3. An inspection cover fitted to the lower surface of an air conditioner main body on which the heat exchanger according to claim 1 or 2 is mounted, and a drain pan is further provided below the inspection cover, and the inspection cover is fitted to the main body. A peripheral device of a heat exchanger having a drain hole communicating with the drain pan near the section. 4. The peripheral device for a heat exchanger according to claim 3, wherein the main body fitting portion of the inspection lid is formed as a slope.