JP2003074936A - Heat exchanging ventilator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a heat exchanging ventilator in which the volume of air being ventilated is increased by lowering pressure loss in the ventilator while enhancing maintainability or serviceability. SOLUTION: The heat exchanging ventilator comprises a passage for exhausting indoor air to the outdoors and a passage for supplying outdoor air to the indoors formed in a body casing 1, an exhaust fan 4 disposed in the exhaust passage, a supply fan 3 disposed in the supply passage, and a heat exchanger 2 disposed at the intersection of the exhaust passage and the supply passage wherein the exhaust fan 4 and the supply fan 3 are disposed on the downstream side of the heat exchanger 2.

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 adapted to exchange heat between air supply and exhaust in parallel with ventilation by air supply and exhaust.

[0002]

2. Description of the Related Art A structural feature of this type of heat exchange ventilator is that a simultaneous air supply / exhaust type ventilator is provided with a heat exchanger for continuously exchanging heat between air supply and exhaust. Most of the built-in heat exchangers have a partition plate having heat conductivity and moisture permeability (may be a partition plate having only heat conductivity).
It has a basic structure in which a hexahedron is formed by stacking a plurality of layers at predetermined intervals with a space plate sandwiched therebetween. The partition plate is a square flat plate, and the corrugated plate is a corrugated plate with a sine wave shape whose projection plane matches the partition plate. By sandwiching them, primary passages and secondary passages are formed alternately between these layers.

FIG. 6 shows a conventional heat exchange ventilator disclosed in Japanese Unexamined Patent Publication No. 10-148370, in which the above heat exchanger is incorporated. In the figure, a box body 1 made of a hexahedral sheet metal whose projected plane is substantially square,
The heat exchanger 2 is installed by being installed on one side of the box body 1 so that the two inflow sides of the primary air passage and the secondary air passage are substantially parallel to the two diagonal lines 35 of the box body 1, respectively, and an exhaust blower is provided. 4, the air supply blower 3, the exhaust air passage 38, and the air supply air passage 39 are disposed symmetrically with respect to the center line 36 of the box body 1 that coincides with the diagonal line of the edge of the heat exchanger 2. A-A 'is the flow of air supply B-
B'indicates the flow of exhaust.

The exhaust air passage 38 and the air supply air passage 39 are formed separately over the entire air passage, the primary passage of the heat exchanger 2 constitutes a part of the exhaust air passage 38, and the secondary passage thereof is the air supply passage. Form part of the. The inlet 47 of the exhaust ventilation passage 38 is provided on one side of the box body 1, and the outlet 43 is provided on the other side of the box body 1. The inlet 45 of the air supply ventilation passage 39 is provided on one side of the inlet side of the exhaust ventilation passage 38 side by side with the inlet of the exhaust ventilation passage 38, and the outlet 44 thereof is provided on the other side of the outlet of the exhaust ventilation passage of the box 1. It is provided side by side with the outlet of the exhaust ventilation passage 38.

The inlet 45 of the supply air passage 39 and the exhaust air passage 3
The outlet 43 of No. 8 is connected to the outside through a duct, and the outlet 44 of the air supply ventilation passage 39 and the inlet 47 of the exhaust ventilation passage 38 are connected to the inside of the room via ducts, respectively. The indoor air is exhausted to the outside through the exhaust ventilation passage 38 by the exhaust blower 4, and the outdoor air is supplied to the room through the air supply ventilation passage 39 by the air supply blower 3. During this time, continuous heat exchange is performed in the heat exchanger 2 between the exhausted indoor air and the supplied outdoor air, and ventilation by supply / exhaust is performed while suppressing fluctuations in state quantities such as temperature. .

[0006]

In the heat exchange ventilator as described above, if the heat exchanger 2 is enlarged in order to secure sufficient heat exchange efficiency, the height dimension of the heat exchange ventilator body becomes large. There is a problem. In addition, since both the exhaust blower 4 and the supply air blower 3 are installed on the windward side of the heat exchanger 2, the air is pushed into the heat exchanger 2, resulting in an increase in pressure loss and a decrease in ventilation air volume. There was a point.

Further, since the exhaust blower 4 and the air supply blower 3 are symmetrical parts, dedicated parts are used, so extra cost is required, and serviceability or maintainability is troublesome. There was also such a problem.

The present invention has been made to solve the above-mentioned problems, and can reduce the pressure loss in the apparatus and increase the ventilation air volume, and improve the maintainability or serviceability. The purpose is to obtain a compact heat exchange ventilator with improved functions.

[0009]

A heat exchange ventilator according to a first aspect of the present invention is formed in a box-shaped main body casing and supplies an exhaust passage for exhausting indoor air to the outside and an outdoor air to the indoor. The air supply passage to be aspirated, the exhaust blower provided in the exhaust passage, the air supply blower provided in the air supply passage, and the heat supply provided at the intersection of the exhaust passage and the air supply passage. In a ventilator provided with a heat exchanger for exchanging, the exhaust blower and the air supply blower are arranged on the downstream side of the heat exchanger.

In the heat exchange ventilator according to the second aspect of the present invention, the heat exchange ventilator is arranged such that the surface on the inflow side of the exhaust stream of the heat exchanger is upward and the inflow side of the feed air stream is downward. When the heat exchanger passes through it, it has a downward slope, and when the supply airflow passes through the heat exchanger, it has an upward slope.

In the heat exchange ventilator according to the third aspect of the present invention, both the exhaust blower and the air supply blower have the same shape, the intake port of the exhaust blower faces downward, and the intake port of the air supply blower faces upward. It is arranged so as to be inverted.

A heat exchange ventilator according to a fourth aspect of the present invention comprises a filter provided on the surface of the heat exchanger on the inlet side of the supply air flow,
And a saucer provided below the filter.

In the heat exchange ventilator according to the fifth aspect of the invention, a mounting plate for mounting an exhaust blower and an air supply blower is provided inside the main body casing.

The main body casing of the heat exchange ventilator according to the sixth aspect of the present invention is provided with a sheet metal molded body having a U-shaped cross section having three surfaces, and a sheet metal molded body facing the top plate of the sheet metal molded body. A bottom plate and a pair of side plates that cover both openings of the sheet metal molding and the cylindrical body composed of the bottom plate, and the three faces of the bottom plate and the pair of side plates are styrene molded products.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1. An embodiment of the present invention will be described with reference to FIGS. 1 is a partially exploded perspective view of the heat exchange ventilation device, FIG. 2 is an exploded perspective view of the heat exchange ventilation device, FIG. 3 is a partially exploded perspective view of the heat exchange ventilation device, and FIG.
1 is a plan view of FIG. 1, and FIG. 5 is a side view of FIG.

1 to 5, reference numeral 1 denotes a main body casing, which is formed into a hexahedron box shape, and has a top plate 31a and a pair of side plates 3 in which a pair of opposite sides of the top plate 31a are bent.
1b and 31c, a sheet metal formed body 31 having a U-shaped cross-section, a bottom plate 32 provided facing the top plate 31a of the sheet metal formed body 31, and a tubular body formed of the sheet metal formed 31 and the bottom plate 32. It is composed of a pair of side plates 14a and 14b that cover the opening. The bottom plate 32 is a drain pan 8 and a saucer 9.
12 is a drain port. Side plates 14a, 1
4b, the drain pan 8 and the tray 9 are styrene molded products. Reference numeral 21 is an air supply inlet integrally formed with the side plate 14b, 22 is an air supply outlet integrally formed with the side plate 14a, and 23 is an exhaust air inlet integrally formed with the side plate 14a.
Reference numeral 4 denotes an exhaust discharge port integrally formed with the side plate 14b.

Reference numeral 5 denotes an element box for accommodating the laminated heat exchanger 2, which is attached to one side in the main body casing 1. Both of the small ports 13 of the heat exchanger 2 are laid side by side in the element box 5, and the surface 2b on the inflow side of the exhaust flow is in the upper surface direction of the main body casing 1 and the surface 2 on the inflow side of the supply air flow.
It is removably incorporated so that a faces the lower surface of the body casing 1. Reference numeral 2c denotes a surface of the lower side of the heat exchanger 2 on the outflow side of the exhaust flow, and 2d denotes a surface of the upper side of the heat exchanger 2 on the outflow side of the supply airflow. As shown in FIG. 5, the two ridge corners 2r and 2s in the longitudinal direction of the heat exchanger 2 are inscribed inside the element box 5 and are attached in a confidential state, and the bottom ridge 2u is the drain pan 8. It is attached in an airtight state while being supported by the above, and an upper ridge corner portion 2v facing it is attached to the top surface of the main body casing 1 in an airtight state.

As shown in FIGS. 4 and 5, the air blower chamber is defined on the opposite side of the element box 5 with the center line 7 interposed therebetween, and one side is provided with an exhaust blower 4 and the other side is provided with a blower of the same shape. It is inverted and incorporated as the air supply blower 3, and the exhaust air inflow surface 2b of the exhaust air blower 4 faces upward and the air supply air inflow surface 2a of the air supply blower 3 faces downward. By incorporating the exhaust blower 4 and the air supply blower 3 as described above, the exhaust passage and the air supply passage are formed without the partition plate. AA 'indicates the flow of supply air or the supply passage, and BB' indicates the flow of exhaust or the exhaust passage. Further, the air supply blower 3 and the exhaust air blower 4 are arranged downstream of the heat exchanger 2.

Reference numeral 10 is a mounting plate for mounting the exhaust blower 4 and the air supply blower 3, which is located between the exhaust blower 4 and the air supply blower 3, and the exhaust blower 4 and the air supply blower 3 are directly connected to each other. It is fixed to the top surface 31 a of the main body casing 1 so as not to touch the main body casing 1. 6 is a filter attached to the surface 2 a of the heat exchanger 2 on the inflow side of the supply air flow, and 9 is a tray 9 provided below the filter 6.

Reference numeral 8 denotes a drain pan which is provided in the lower portion of the main body casing 1 so as to be lined up with the tray 9 and collects the drain generated from the heat exchanger 2. From the lower part of the exhaust blower 4 and the air supply blower 3. The heat exchanger 2 is covered up to the lower ridge 2u. Reference numeral 12 denotes a drain port for discharging the drain from the drain pan 8 to the outside. As described above, by incorporating the exhaust blower 4, the air supply blower 3, and the heat exchanger 2 in this manner, the exhaust passage and the air supply passage are formed.

Next, the operation will be described with reference to FIGS. When the heat exchange ventilator is operated, the air in the room is sucked in through the exhaust suction port 23 by the exhaust blower 4 as shown by the arrow BB ′ in FIG. Surface 2b of the heat exchanger 2 into the heat exchanger 2 and passes through the heat exchanger 2 downward to store the heat contained in the indoor air in the heat exchanger 2 to generate heat as shown in FIGS. Flows out from the lower outflow surface 2c, passes through the exhaust blower 4, and is exhausted to the outside from the exhaust discharge port 24.

On the other hand, by the air supply blower 3, the outdoor air is sucked in through the air supply inlet 21 as shown by the arrow AA 'in FIG. After the dust is removed by the filter 6 attached to the surface 2a,
Flows into the heat exchanger 2, passes through the heat exchanger 2 upwards,
The heat stored in the heat exchanger 2 is recovered, flows out from the outflow surface 2d at the upper part of the heat exchanger 2, passes through the air supply blower 3, and the air supply outlet 22 as shown in FIGS. Is exhausted outdoors.

When performing maintenance or inspection, the tray 9
Is removed to collect snow, insects, and the like that are caught on the filter 6, and the filter 6 is replaced.

[0024]

The heat exchange ventilation device according to the first invention is
An exhaust passage formed in a box-shaped main body casing for exhausting indoor air to the outside, an air supply passage for supplying outdoor air to the room, an exhaust blower provided in the exhaust passage, and the air supply passage. A ventilation device provided with an air supply blower provided in an air passage, and a heat exchanger provided at an intersection of the exhaust passage and the air supply passage for exchanging heat, wherein the exhaust blower and the air supply are provided. Since the air blower is arranged on the downstream side of the heat exchanger, it is possible to reduce the pressure loss when the exhaust flow and the feed air flow pass through the heat exchanger, and it is possible to reduce the pressure loss. Can be made compact.

In the heat exchange ventilator according to the second aspect of the present invention, the heat exchange ventilator is arranged such that the surface of the heat exchanger on the inflow side of the exhaust flow is in the upward direction and the inflow side of the feed air flow is in the downward direction. Since the heat exchanger has a downward slope when passing through the heat exchanger and the supply airflow has an upward slope when passing through the heat exchanger, clogging of the heat exchanger can be prevented and drainage can be smoothly drained.

In the heat exchange ventilator according to the third aspect of the present invention, both the exhaust blower and the air supply blower have the same shape, the intake port of the exhaust blower faces downward, and the intake port of the air blower faces upward. Since it is arranged so as to be inverted, the cost can be reduced and the maintainability and serviceability can be improved.

A heat exchange ventilator according to a fourth aspect of the present invention comprises a filter provided on the surface of the heat exchanger on the inlet side of the supply air flow,
Since the tray is provided below the filter, snow and insects caught on the filter can be easily collected.

In the heat exchange ventilator according to the fifth aspect of the invention, since the mounting plate for mounting the exhaust blower and the air supply blower is provided inside the main body casing, the exhaust blower and the air supply blower are directly attached to the main body casing. Without touching it, vibrations from both blowers are less likely to be transmitted to the main body casing, and vibrations can be reduced.

The main body casing of the heat exchange ventilator according to the sixth aspect of the present invention is provided with a sheet metal molded body having a U-shaped cross section having three surfaces and a ceiling plate of the sheet metal molded body facing the above. Bottom plate, and a pair of side plates that cover both openings of the tubular body formed by the above-mentioned sheet metal molding and the bottom plate, and since the three faces of the bottom plate and the pair of side plates were styrene molded products, respectively, the number of parts Cost reduction and weight reduction can be achieved by reduction.

[Brief description of drawings]

FIG. 1 is a partially exploded perspective view of a heat exchange ventilator showing an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the heat exchange ventilation device according to the embodiment of the present invention.

FIG. 3 is a partially exploded perspective view of the heat exchange ventilation device according to the embodiment of the present invention.

FIG. 4 is a plan view of a heat exchange ventilator showing an embodiment of the present invention.

5 is a side view of the heat exchange ventilator shown in FIG. 4. FIG.

FIG. 6 is a plan view of a conventional heat exchange ventilation device.

[Explanation of symbols]

1 body casing, 2 heat exchanger, 3 air supply blower, 4 exhaust air blower, 6 filter, 9 saucer, 1
0 mounting plate, 14a, 14b side plate, 31 sheet metal molded body, 31a top plate, 32 bottom plate.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yoshiyuki Kobayashi             No. 40, 1041 Eggagawa, Nakatsugawa, Gifu Prefecture

Claims (6)

[Claims] 1. An exhaust passage formed in a box-shaped main body casing for exhausting indoor air to the outside, an air supply passage for supplying outdoor air to the indoor, and an exhaust passage provided in the exhaust passage. A ventilation device comprising a blower, a blower for air supply provided in the air supply passage, and a heat exchanger provided at an intersection of the exhaust passage and the air supply passage for heat exchange, A heat exchange ventilator, characterized in that the air blower and the air supply blower are arranged downstream of the heat exchanger. 2. The heat exchanger is arranged such that a surface on an inflow side of an exhaust gas flow is in an upward direction and an inflow side of a feed air flow is in a downward direction, and the exhaust gas flow has a downward slope when passing through the heat exchanger. The heat exchange ventilator according to claim 1, wherein the supply airflow has an upward slope when passing through the heat exchanger. 3. The exhaust blower and the air supply blower both have the same shape, and are arranged so that the inlet of the exhaust blower faces downward and the inlet of the air blower faces upward. The heat exchange ventilation device according to claim 1 or 2, characterized in that. 4. The filter according to claim 1, further comprising: a filter provided on a surface of the heat exchanger on the inflow side of the supply air flow; and a tray provided under the filter. The heat exchange ventilator described in. 5. The heat exchange ventilation device according to claim 1, wherein a mounting plate for mounting an exhaust blower and an air supply blower is provided inside the main body casing. 6. The main body casing comprises a sheet metal molded product having a U-shaped cross section having a top plate, a bottom plate provided facing the top plate of the sheet metal molded product, and the sheet metal molding and the bottom plate. 6. A pair of side plates that cover both openings of a tubular body made of, and three faces of the bottom plate and the pair of side plates are styrene molded products, respectively. The heat exchange ventilator described.