JPH072766U - Air conditioning heat exchanger - Google Patents

Abstract

(57) [Abstract] [Purpose] When the cross-flow heat exchanger (3) is installed inside the heat exchange device for air conditioning, it is rotatably installed to reduce the size of the device casing (1). Realization and reduction of wind pressure loss. A cross-flow air heat exchanger (a center of rotation is placed at substantially the same position as the partition plate (13) inside an apparatus casing (1) in which two air channels are partitioned by a partition plate (13). 3) is installed and the heat exchanger (3) is rotated so that a heat exchange state and a bypass state can be created.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a heat exchange device for air conditioning, and specifically uses a cross-flow heat exchanger that exchanges heat through a thermally conductive partition wall while directly alternating two air flows having different temperatures. The present invention relates to improvement of a heat exchange device for air conditioning, and can be used for, for example, a ceiling-embedded ventilation device.

[Specific example of device]

First, the basic form of a cross flow heat exchanger will be described with reference to I, II, and III of FIG. FIG. 5 is for explaining the basic concept of a cross-flow heat exchanger (hereinafter, abbreviated as “heat exchanger” within a range that does not cause misunderstanding). As shown in FIG. A large number of thermally non-conducting (for example, plastic) channel members 31 are laid parallel to each other at intervals on the surface of the substrate 30 serving as a partition wall (made of metal, for example) and fixed between the channel members 31. The flow channel 32a is formed. The unit made up of the substrate 30 and the channel material 31 becomes a unit body of the heat exchanger. FIG. II is the same as that shown in FIG. I, but for the sake of explanation, it is shown by changing the angle by 90 degrees, 40 is a substrate, 41 is a channel material, and 42b is a flow path. Is. Then, another heat exchange unit is made of the substrate 40 and the channel material 41.

As described above, a plurality of unit bodies arranged so that the flow path directions are at right angles to each other are alternately laminated, and joined together so that no gap is formed between the back surface of the channel material and the back surface of the substrate. The result is shown in FIG. (Dotted lines in FIG. III are imaginary lines when a large number of unit bodies are laminated.) When laminated in this manner, the flow path 32 a shown in FIG. I (hereinafter, indicated by a within a range that does not cause misunderstanding) and II The flow path 42b shown in the figure (hereinafter referred to as "b" in a range that does not cause misunderstanding) makes a right angle alternating current, and air flowing in the flow path a (hereinafter referred to as air a) and air flowing in the flow path b. Heat exchange occurs between (hereinafter, referred to as air b) through the thermally conductive substrates 30 and 40. When assembled as shown in FIG. III, the openings of the channel materials that do not serve as flow channels may be left open (shown by 35 in FIG. III) or may be closed (3 in FIG. III). 6).

As can be assumed from FIG. 5III, the heat exchanger as a whole is a rectangular parallelepiped whose both sides are square, and the accessory equipment necessary for using the above-mentioned set of unit bodies as a heat exchanger. It is natural to equip the product with heat, but the heat exchange device of the present invention is shown in FIG.

In FIG. 1, reference numeral 1 denotes an apparatus casing, in which two air flow paths (air flow or air flow path) partitioned by a partition plate 13 (however, divided into 13a and 13b for convenience of description) are provided. Are defined as 1a and 1b). That is, one channel is the route of vent 16 → (however, ← in the figure) → blower fan 14 → channel 1a → vent 18 and the other channel is vent 19 → channel 1b. The route is from the blower fan 15 to the vent 17. Specifically, in FIG. 1, it is assumed that the illustrated vent holes 18 and 19 are outside the room to be air-conditioned, and the vent holes 16 and 17 are inside the room. Therefore, the fan 14 is an exhaust fan and the fan 15 is an air supply fan. Further, in the figure, the two flow paths are shown above and below, but it is equivalent if they are partitioned according to the positional relationship between the left and right.

The heat exchanger 3 is installed between the partition plates 13a and 13b. That is, the heat exchanger 3 is mounted and installed so as to be rotatable (rotatable) in a plane substantially perpendicular to the partition plate about the rotating shaft 5 which is substantially flush with the partition plate. ing. A state where the line showing the heat exchanger 3 is a solid line indicates a position where the heat exchanger 3 stands in a rhombus shape, and a two-dot chain line shows a rotating shaft 5 which is substantially flush with the partition plates 13a and 13b. Shows a position rotated by 45 degrees about. That is, in the solid line position, the flow paths a and b of the heat exchanger 3 cross the partition plate to the casing flow paths 1a to 1b or 1b to 1a as shown in FIG. 5III. This is an arrangement for making changes, and heat exchange is performed while the two air streams pass through the heat exchanger 3. That is, it is an operating state.

On the other hand, at the stationary seat position indicated by the chain double-dashed line, one of the flow paths a and b of the heat exchanger 3 is parallel to the partition plate and the other is closed (this point will be described later). Therefore, there is no heat exchange between the two air streams. That is, it is in the bypass state. In FIG. 1, 2 is a closing plate, which can be moved up and down by the length of the lever by two pairs of levers 4 mounted on the ceiling of the casing 1. There is also a gasket 8 across the casing 1 on the closure plate 2, which is above the closure plate 2 when the closure plate 2 is in the raised and retracted position (shown in solid lines), ie when the heat exchanger 3 is in the operating position. Do not make a gap. The heat exchanger 3 is in the bypass position when the closing plate 2 is in the downward expansion position (shown by the chain double-dashed line). At this time, the lower surface of the closing plate 2 is in the flow path a of the heat exchanger 3. Alternatively, the opening of b is closed. On the other hand, the gap above the closure plate 2 and the casing ceiling serves as an air flow path.

In FIG. 1, gaskets 9, 10, 11, and 12 are for sealing the gap between the heat exchanger 3 and surrounding objects, and 9 is provided at the apex position of the heat exchanger. Gasket 10 is a gasket provided at the edge of partition plate 13b, 11 is a gasket provided on the bottom of the casing, and 12 is a gasket provided at the edge of partition plate 13a. Further, the heat exchanger 3 is provided with seal plates 6 and 7 at positions shown in the drawing, and the heat exchanger 3 is rotated clockwise from the operating state (solid line position) to the bypass state (two-dot chain line position). When the positions are changed, the seal plates 6 and 7 come into contact with the partition plates 13a and 13b to seal the gap between them.

FIG. 2 is a schematic diagram showing the air flows F1 and F2 when the heat exchanger 3 is in the operating state, and FIG. 3 is a schematic diagram showing the air flows F1 and F2 when the heat exchanger 3 is in the by-bus state. FIG. 4 is a schematic side view of FIG. 1. In FIG. 4, the X mark indicates that the flow passage opening of the heat exchanger 3 is omitted, the upper half of the partition plates 13a and 13b is along the double arrow (Ei) in FIG. 2, and the lower half is in FIG. It is along a double arrow (roll). That is, in the upper half of FIG. 4 in which the heat exchanger 3 is in operation, all the air is passed through the heat exchanger 3, so that the gasket 8, the closing plate 2, the gasket 9, the side plate 21, and the side plate gasket 22 close the flow path. However, in the lower half bypass state, there is a space between the heat exchanger 3 and the gasket 11.

FIG. 6 is a simplified view of the air flows F1 and F2 inside the apparatus casing. In the example described in the above example, as shown in I and II, the two air flows are It was a type to interact with each other. However, the design change to the mutual forward flow type as shown in III and IV can be easily performed by changing the direction of the fan to be used, the installation location, and the like.

[0011]

[Problems in Prior Art Solved by the Present Invention]

 The cross-flow air heat exchanger used in the present invention has been known, but in the conventional air-conditioning heat exchanger using this heat exchanger, the heat exchanger is fixedly installed, and it is operated and bypassed. Since the direction of the air flow was controlled or the direction was changed by the damper installed inside the equipment casing, a large space was required for installing and rotating the damper, so the equipment casing would be large in size as a whole. The disadvantages such as large wind pressure loss due to the increased refraction of the air flow were inevitable. However, in the present invention, a cross-flow air heat exchanger is installed inside the device casing in which two air passages are partitioned by a partition plate, with the center of rotation at the same position as the partition plate. Since the heat exchange state and the bypass state can be created by rotating the vessel, the disadvantages of the past can be solved.

[0012]

[Brief description of drawings]

FIG. 1 is a schematic vertical sectional view of an embodiment of a heat exchange device of the present invention.

FIG. 2 is a schematic sectional view mainly showing an air flow in the embodiment of FIG.

FIG. 3 is a schematic sectional view mainly showing another air flow in the embodiment of FIG.

4 is a schematic side cross-sectional view of the embodiment of FIG. 1, in which the partition plate is on the upper side along the double arrow (a) in FIG. 2 and the partition plate is on the lower side in FIG. It is along the arrow (roll).

FIG. 5 is a diagram for explaining the basic concept of a cross-flow heat exchanger, where I and II are heat exchange units, and III.
The figure shows the aggregate.

FIG. 6 is a symbol diagram showing a flow of an air flow in the heat exchange device.

[Explanation of symbols]

1 Equipment casing 31,41
Channel material 1a, 1b Air flow path F1, F2
Air flow 2 Closure plate 3 Cross flow heat exchanger 5 Rotating shaft 13 Partition plate 14,15 Blower fan 16,17 Vent hole 18,19 Vent hole 21,22 Side plate 30,40 Substrate

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hirokazu Utaka 1-37 Kyoritsutsumi, Hiratsuka-shi, Kanagawa Japan Air Filter Co., Ltd. (72) Masayuki Okamoto 1-37 Kyuryuse, Hiratsuka-shi, Kanagawa Within Japan Air Filter Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. Two parallel air channels (1a, 1b)
Inside the device casing (1) partitioned by the partition plate (13), the rotation center (5) is located at substantially the same position as the partition plate (13).
, A cross-flow air heat exchanger (3) is installed, and a heat exchange state and a bypass state are created by rotating the heat exchanger (3). apparatus.