JPH0579672A - Ventilating device - Google Patents

Abstract

(57) [Summary] [Purpose] A ventilation device with a bypass passage, a damper,
The drive mechanism is taken out of the device for easy inspection and repair, and the manufacturing cost is reduced. [Structure] The damper 51, the drive unit 16 and the like are housed in a frame body 55 to form a bypass unit 56, and the support members 47 to 47 of the heat exchanger 10 to
It is removably attached to the box body 1 using the 50. A rotary shaft 52b is provided in the center of the damper valve 52a, and a baffle plate 60 is provided in the box body 1 so as to extend from the indoor suction port 2 to the center of the inflow side of the bypass unit 56.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation device having a bypass passage, and more particularly to a damper for opening and closing the bypass passage.

[0002]

2. Description of the Related Art FIGS. 6 to 8 are views showing a conventional ventilation system disclosed in, for example, Japanese Utility Model Laid-Open No. 2-4144. In the figure, 1 is a box body in which suction ports 2 and 3 and outlets 4 and 5 are provided in the indoor side and the outdoor side, respectively, and 6 and 7 are the inside and outside of the box. The exhaust passage extending from the indoor suction port 2 to the outdoor air outlet 5 and the air supply passage extending from the outdoor suction port 3 to the indoor air outlet 4 are provided so as to intersect each other, and 8 is the exhaust passage 6. An exhaust air blower for forming an exhaust air flow provided in the air supply air blower, a blower 9 for forming an air supply air flow provided in the air supply passage 7 and an air blower for air supply 10 provided in the air supply passage 7 Possible heat exchangers, for example, disclosed in Japanese Patent Publication No. 47-19990, for exchanging temperature and humidity between the air supply flow and the exhaust flow, 11 is a blade casing of the blowers 8 and 9, 12
Is a connecting member for the air supply and exhaust ducts provided at the suction ports 2 and 3 and the blowout ports 4 and 5, and 13 is a bypass passage that is arranged in parallel with the exhaust passage 6 and bypasses the heat exchanger 10.

Each chamber is provided by a partition plate 31 in the box body 1, and 21 is a heat exchanger chamber in which four chambers, 17, 18, 19 and 20 are formed by inserting the heat exchanger 10. , 22 are exhaust air blower chambers in which the exhaust air blower 8 is installed, which are communicated with the chamber 17 and the partition plate 31 by providing the openings 23, and the outside air outlet 5 is provided at the end of the blade casing 11. .. 24 is the above room 18
And the partition plate 31 are provided with the opening 25 and are in communication with each other to supply air.
In the air supply and blower chamber in which the inside is installed, the indoor side air outlet 4 is provided at the end of the blade casing 11. Reference numeral 26 denotes an outdoor suction chamber provided at a lower portion and a side portion of the exhaust blower chamber 22 which is communicated with the chamber 19 by providing an opening (not shown) in a partition plate, and an outdoor suction port 3 is provided on a side wall. ing. 27 is connected to the chamber 20 and the partition plate 31 by providing an opening 28, and is connected to the air blower chamber 24.
An indoor-side suction passage provided at the lower part of the reference numeral 29 is an indoor-side suction chamber that communicates with the indoor-side suction passage through an opening 30, and the indoor-side suction port 2 is provided on the side wall. Bypass passage 13
Is provided on the side of the heat exchanger chamber 21, and has an opening 32 in the partition plate 31,
33 is provided, and the exhaust blower chamber 22 and the indoor suction chamber 29 are communicated with each other through the chamber 17.

Reference numeral 34 denotes an exhaust passage damper provided in the indoor suction chamber 29. A rotary shaft 35 is provided at a substantially central portion to open and close the opening 30, and a driving device 16 is provided via a connecting tool 15. It is connected. Reference numeral 36 denotes a vertically long bypass damper provided in the indoor suction chamber 29, having a rotary shaft 35 at its end portion for opening and closing the opening 33, and the free end of the exhaust passage damper 34 and this bypass damper. The free ends of are linked by an interlocking link 37. 38 is an opening provided in the exhaust passage damper 34
An elastic body that urges 30 to open, 39 is the heat exchanger
A cover for inserting / removing 10 and 40 for the above exhaust passage damper 34
Is a balance weight provided at the end of the elastic body 38 on the engaging portion side.

The conventional ventilation system is constructed as described above, and in the air conditioning ventilation using the heat exchanger 10, the drive unit 16 is turned off.
By FF, the exhaust passage damper 34 is rotated by the elastic body 38 to open the opening 30, and the bypass damper 36 is rotated by the interlocking link 37 to close the opening 33, and the respective blowers 8 and 9 are operated. The indoor air is sucked into the indoor suction chamber 29 from the indoor suction port 2 through the duct, and the opening 30 → the indoor suction passage 27 → the chamber 20 → the heat exchanger 10 → the chamber
17 → opening 23 → through the exhaust passage 6 leading to the exhaust blower room 22,
It is blown out from the outdoor air outlet 5 by the exhaust blower 8 and discharged to the outside through the duct. The outdoor air is sucked into the outdoor suction chamber 26 from the outdoor suction port 3 through the duct,
Room 19-> heat exchanger 10-> room 18-> opening 25-> air blower Blower 9 passes through the air supply passage 7 to the room 24, is blown out from the indoor side outlet 4 by the air blower 9 and is supplied indoors through a duct. To be done.
At this time, in the heat exchanger 10, heat exchange is performed between the exhaust flow and the supply air flow, and exhaust heat is recovered to reduce the heating and cooling load.

On the other hand, in an intermediate period such as spring and autumn when air conditioning is not required, the drive unit 16 is operated to rotate the exhaust passage damper 34 as shown in FIG. Rotate the opening 30 so that the exhaust passage damper 36
The air is supplied in the same manner as the above-mentioned air conditioning ventilation by operating the blowers 8 and 9 by opening the openings 33 by superposing the same, and the opening 33 is opened. The air is sucked from the suction port 2 into the indoor suction chamber 29, passes through a bypass ventilation passage extending from the opening 33 → the bypass passage 31 → the opening 32 → the chamber 17 → the opening 23 → the exhaust blower chamber 22 and is blown out to the outside by the exhaust blower 8. It is blown out from No. 5 and discharged to the outside through the duct. In this way, since the exhaust flow does not pass through the heat exchanger 10, the resistance in the ventilation passage is reduced, and sufficient normal ventilation is performed.

Although the heat exchanger 10 needs to be soiled and needs to be cleaned by air-conditioning ventilation or normal ventilation, it is necessary to remove the cover 39 provided on the box 1 and pull out the heat exchanger 10 to clean the vacuum cleaner. Etc. can be cleaned.

[0008]

However, as described above, in the conventional ventilator, the exhaust passage damper 34, the bypass damper 36, the drive unit 16, the connector 15, and the interlocking link 37 are located on the inner side of the box 1 (the bypass passage 13). Since it is fixed on the side), if the above-mentioned location fails, it is necessary to remove the cover 39, pull out the heat exchanger 10, insert your body into the empty space for inspection and repair, and it is very workable. It was bad. In addition, it is necessary to make the box body 1 strong so that the box body 1 will not be deformed even when the body is inserted and working, which causes a problem of high manufacturing cost.

The present invention has been made to solve the above problems, and when the damper or drive mechanism fails, the damper or drive mechanism can be taken out of the box for easy inspection and repair. It is an object of the present invention to provide a ventilation device that enables the manufacturing cost to be low at the same time.

[0010]

A ventilator according to the present invention supports a bypass unit having a damper and a drive mechanism so that the bypass unit can be inserted and removed from one side surface of a box.

Further, the bypass unit and the heat exchanger are supported by a common supporting member.

Further, the damper for alternately switching the exhaust passage and the bypass passage has a plate-shaped damper valve and a rotary shaft arranged in the center of the damper valve, and is provided in the box body to introduce an exhaust flow. When the exhaust passage is closed and the bypass passage is opened, the damper valve and the baffle plate are arranged in substantially the same plane in the box body.

[0013]

In the ventilator according to the present invention, when the damper or drive mechanism fails, the cover / heat exchanger is removed and the bypass unit is inserted / removed in / from the box.

The bypass unit is moved on the support member of the heat exchanger to be inserted and removed.

The air (exhaust flow) sucked from the indoor suction port flows along the air guide plate provided in the box body when the exhaust passage is opened and the bypass passage is closed, but is blocked by the damper valve and flows into the exhaust gas. The flow is bent and guided to the exhaust passage.
Further, when the exhaust passage is closed and the bypass passage is opened, the vehicle moves straight in the bypass unit along the damper valve that is rotated so as to be substantially on the same plane as the baffle plate. At this time, the damper valve rotates about the central rotating shaft.

[0016]

【Example】

Example 1. An embodiment of the present invention will be described below with reference to the drawings. 1 to 5 show an embodiment of a ventilation device, FIG. 1 is a plan view, FIG. 2 is a front sectional view, FIG. 3 is a perspective view of a bypass unit, and FIGS. 4 and 5 are plan views showing the flow of air. Is.
In the figure, the same reference numerals indicate the same or corresponding parts as in the conventional example.

In FIG. 1, reference numeral 51 denotes a damper which alternately switches the exhaust passage 6 and the bypass passage 13, and is composed of a single-plate damper valve 52a and a rotary shaft 52b arranged in the center of the damper valve 52a. Two pulleys 53 at the end of the rotary shaft 52b,
54 is attached, one pulley 53 is connected to the driving machine 16, and the other pulley 54 is connected to the elastic body 38 that biases the driving machine 16 in the opposite rotation direction. In the reference numeral 56, the damper 51 is arranged substantially in the center of the frame body 55, and the pulleys 53, 54, the driving machine 16,
The bypass unit accommodates the elastic body 38.

The ventilator constructed as described above is used in the air conditioning ventilation using the heat exchanger 10 as shown in FIG.
By turning off the drive unit 16 and rotating the damper valve 52a by the elastic body 38 to open the exhaust passage 6 and close the bypass passage 13 and operate the respective blowers 8 and 9, the indoor air passes through the duct. It is sucked into the indoor suction chamber 29 from the indoor suction port 2 and makes a U-turn in the bypass unit 56 →
The indoor side suction passage 27 → the heat exchanger 10 → the exhaust blower chamber 22 is reached, and is blown out from the outdoor air outlet 5 by the exhaust blower 8 and discharged to the outside through the duct. The outdoor air is sucked into the outdoor suction chamber 26 from the outdoor suction port 3 through the duct, passes through the air supply passage 7 from the heat exchanger 10 to the air supply blower chamber 24, and is blown indoors by the air supply blower 9. It is blown out from the outlet 4 and is supplied to the room through the duct. At this time, in the heat exchanger 10, heat exchange is performed between the exhaust flow and the supply air flow, and exhaust heat is recovered to reduce the heating and cooling load.

On the other hand, in the intermediate period such as spring and autumn when cooling and heating are not required, as shown in FIG. 5, the drive unit 16 is operated to rotate the damper valve 52a to close the exhaust passage 6 and to close the bypass passage 13. By opening and operating the respective blowers 8 and 9, the supply of the outside air is performed in the same manner as the above-mentioned air conditioning ventilation, but the room air is sucked from the indoor side suction port 2 to the indoor side suction chamber 29 through the duct. Bypass unit
56 → Bypass passage 13 → Passes through a bypass ventilation path leading to the exhaust blower chamber 22, and is blown out from the outdoor air outlet 5 by the exhaust blower 8 and discharged to the outside through the duct. In this way, since the exhaust flow does not pass through the heat exchanger 10, the resistance in the ventilation passage is reduced, and sufficient normal ventilation is performed.

Further, in the bypass unit 56, since the drive machine 16, the elastic body 38, the damper 51, and the pulleys 53, 54 are housed in the frame body 55, should the drive machine 16 or the damper 51 fail. , The entire bypass unit 56 is pulled out of the box 1 for inspection and repair.

Example 2. In FIG. 2, a box-shaped heat exchanger 10 having a substantially square cross section is formed in the central portion of the box body 1 which is formed in a box shape having a rectangular cross section and whose one side plate can be opened and closed by a cover 39. Each side 41, 42, 43, 44 is 45 ° from horizontal
It is mounted so as to be inclined so as to form a rhombus when viewed from the front, and partition plates 45 and 46 that divide the inside of the box 1 into upper and lower parts are attached to the left and right sides of the partition plates 45 and 46 so as to abut the left and right ridgelines of the heat exchanger 10. It is fixed to the box 1. The interior of the box body 1 is divided by the partition plates 45 and 46 and the heat exchanger 10 into an exhaust blower room 22, an air supply blower room 24,
The outdoor suction chamber 26 and the indoor suction passage 27 are separated from each other. Reference numerals 47, 48, 49 and 50 denote rail-shaped support members that support the heat exchanger 10.

Further, in FIG. 3, the outer surface of the bypass unit 56 is projected at a position corresponding to the support members 47, 48 and 49.
57, 58, 59 are provided, and the protrusions 57, 58, 59 are supporting members.
The bypass unit 56 is supported within the box body 1 so as to be insertable and removable so as to be accommodated in 47, 48 and 49. Bypass unit
The 56 and the heat exchanger 10 are mounted so that their end faces are in contact with each other.

As described above, the support members 47, 4 of the heat exchanger 10
Since the bypass unit 56 was supported using 8, 49, when pulling out the entire bypass unit 56 to the outside of the box 1 for inspection and repair, slide the support members 47, 48, 49 on top. Insert and remove.

Example 3. In FIG. 1, reference numeral 60 denotes a baffle plate provided in the box body 1. The air guide plate 60 is located at the center of the bypass unit 56 on the inflow side from the indoor suction port 2, and the damper 51 is arranged at the substantially center of the bypass unit 56. .. As described above, the damper 51 is composed of a single-plate damper valve 52a and a rotary shaft 52b arranged in the center of the damper valve 52a.

Therefore, since the damper valve 52a rotates about the central rotary shaft 52b, the rotating torque is small, and even if the damper valve 52a is rotated during ventilation, the wind pressure during ventilation is clockwise and counterclockwise. The torques due to the wind pressure can be ignored because they act as the torque of, and cancel each other out as a result.

[0026]

Since the present invention is constructed as described above, it has the following effects.

Since the bypass unit having the damper and the drive mechanism is detachably supported from one side surface of the box body, it is not necessary to insert the body into the box body for inspection and repair of the damper and the drive mechanism. However, the entire bypass unit can be pulled out of the box for work.
Also, it is not necessary to make the box strong.

Further, since the bypass unit and the heat exchanger are supported by the common supporting member, the bypass unit can be moved on the supporting member to be inserted / removed without duplication of the members.
Cost can be reduced.

Further, the damper for switching the opening and closing of the exhaust passage and the bypass passage alternately has a plate-like damper valve and a rotary shaft arranged at the center of the damper valve, and is installed in the box body to introduce the exhaust flow. The wind plate is placed inside the box so that the damper and the baffle plate are approximately on the same plane when the exhaust passage is closed and the bypass passage is opened, so even if the damper valve is rotated during ventilation, the wind pressure will be clockwise or left. Since the torques cancel each other out, the turning torque of the damper can be small, and the driving machine can be small so that the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a plan view of a ventilation device showing Embodiments 1 and 3 of the present invention.

FIG. 2 is a front sectional view of a ventilation device showing Embodiment 2 of the present invention.

FIG. 3 is a perspective view of a bypass unit showing Embodiment 2 of the present invention.

FIG. 4 is a plan view showing the flow of air in the ventilation device according to the first and third embodiments of the present invention.

FIG. 5 is a plan view showing the flow of air in the ventilation device according to the first and third embodiments of the present invention.

FIG. 6 is a perspective view showing a state in which a box upper surface of a conventional ventilation device is removed.

FIG. 7 is a plan view showing an air flow of a conventional ventilation device.

FIG. 8 is a plan view showing the flow of air in a conventional ventilation device.

[Explanation of symbols]

 1 Box 2 Indoor suction port 3 Outdoor suction port 4 Indoor air outlet 5 Outdoor air outlet 6 Exhaust passage 7 Air supply passage 8 Exhaust blower 9 Air supply blower 10 Heat exchanger 13 Bypass passage 16 Drive 47 ~ 50 Support member 51 Damper 52 Shaft 55 Frame 56 Bypass unit 60 Baffle plate

Claims (3)

[Claims] 1. A box body provided with one set of suction ports and one set of air outlets on the indoor side and the outdoor side respectively, and provided in the box body so as to intersect between the suction port and the blow port. An air supply passage and an exhaust passage extending from the indoor side to the outdoor side,
A blower provided in the air supply passage and the exhaust passage to form a supply air flow and an exhaust flow, a heat exchanger provided at the intersection for exchanging heat between the supply air flow and the exhaust flow, and the exhaust gas. In a device provided with a bypass passage that is arranged in parallel with a passage and bypasses the heat exchanger, a damper that alternately switches the exhaust passage and the bypass passage, and a drive mechanism that drives the damper constitute a bypass unit. A ventilator in which a bypass unit is detachably supported from one side surface of the box body. 2. The ventilation device according to claim 1, wherein the bypass unit and the heat exchanger are supported by a common supporting member. 3. A damper, which alternately switches the exhaust passage and the bypass passage, has a plate-like damper valve and a rotary shaft arranged at the center of the damper valve, and when the exhaust passage is opened and the bypass passage is closed, an inflow is introduced. The damper valve is turned to a position opposite to the exhaust flow to block the bypass passage, and the inflowing exhaust flow is bent by the damper valve and flows into the exhaust passage. When the exhaust passage is closed or the bypass passage is opened, The damper valve is rotated in the direction of the inflowing exhaust flow so that the exhaust flow proceeds straight through the bypass passage, and the damper is arranged so that the damper valve blocks the exhaust passage. The ventilation device according to claim 1.