JPH07243679A - Ventilator - Google Patents

Abstract

PURPOSE:To facilitate mounting and maintenance of a pressure sensor, a controller at a body in a ventilator for controlling a ventilating amount by using the sensor and the controller. CONSTITUTION:A blower 29 is provided in an outer housing 20 of a ventilator which is formed of a box and has a suction port at a lower part, an exhaust port 25 at one surface of a sidewall and suction openings 26c provided at the other three surfaces of the sidewall. A damper cover 34 having an air flow rate regulating plate 58, a low pressure side pressure detecting opening 43 and a high pressure side pressure detecting opening is provided in the opening 26c. A controller 61 integral with a pressure sensor is mounted at the cover 34.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilator mounted on the ceiling or the like to control the amount of ventilation in a room.

[0002]

2. Description of the Related Art Conventionally, as a ventilation device of this type, as shown in FIG. 9, a pressure detection port 5 is made to face a suction port 3 and a discharge port 4 of a blower unit 2 in a ventilation fan main body 1 to detect these pressures. It is known that a pressure detection device 6 for detecting the pressure difference between the suction port 3 and the discharge port 4 by the ports 5 and 5 is provided (see, for example, Japanese Utility Model Laid-Open No. 57-119224).

Further, as shown in FIG. 10, a suction duct 10 and an outside air intake duct 11 are connected to an intake chamber 9 having an intake port 7, an air filter 8, etc., and the outside air intake duct 11 is located near the intake chamber 9. Motor case 1
An electric damper 13 is provided that is rotated by an electric motor (not shown) provided in the unit 2. A differential pressure detection device (not shown) for detecting the negative pressure in the room, which includes a diaphragm and a limit switch in the motor case 12
The diaphragm is connected to an indoor pressure pipe 14 for sampling the indoor pressure and an outdoor pressure pipe 15 for sampling the outdoor pressure, and the other ends are connected to the suction chamber 9 and the outside air intake duct 11, respectively. It is known that the pressure is detected by detecting the pressure (see, for example, Japanese Patent Laid-Open No. 3-67936).

[0004]

Since the conventional ventilation device is constructed as described above, it has the following problems.

1. Since the pressure detection device 6 is built in the main body 1, the ventilation fan main body 1 becomes thicker, which is restricted when the ventilation fan 1 is installed in a space above the ceiling, and moisture contained in the ventilation air reaches the pressure detection device 6 directly. This causes a failure of the device 6.

2. Since the pressure pipes 14 and 15 for sampling the pressure on the indoor side and the outdoor side are provided outside the electric motor case 12, the pipes 14 and 15 may be damaged or come off and interfere with the work of mounting the main body 9. become.

3. When repairing the electric motor that opens and closes the electric damper 13, the electric motor case 12 and the indoor pressure pipe 14
It is necessary to remove the outdoor side pressure pipe 15, and since the protruding directions of the indoor side pressure pipe 14 and the outdoor side pressure pipe 15 from the electric motor case 12 are different when assembling the product, after mounting the electric motor case 12, Since it is necessary to connect both pipes 14 and 15, the assembling work becomes complicated.

The present invention has been made to solve the above problems, and an object of the invention is to obtain a small-sized ventilation device in which the pressure detecting device is reliably protected and functions reliably, and which is easy to assemble and work. It is what

[0009]

A ventilator according to the present invention has an opening for forming an intake port in a lower portion, an exhaust port communicating with the intake port on one side wall, and an intake opening section on the other side wall. An outer casing, a pressure detection device provided in the outer casing to detect the pressure of the flow passing through the outer casing, a control device connected to the pressure detection device, and an intake port that is interlocked with the control device and the pressure detection device. Equipped with a blower that blows air from the
A damper cover having a pressure detection opening is continuously provided in the intake opening, and the pressure detection device and the control device are integrally attached to the damper cover in a detachable manner.

[0010]

In the present invention, since the damper cover having the pressure detecting opening is connected to the intake opening of the outer casing, and the pressure detecting device and the control device integrated with the damper cover are mounted, the ventilation device can be used. The pressure detection device and the control device can be attached and detached without using the space inside the outer casing and without removing the outer casing from the mounting position.

[0011]

1 to 8 are views showing an embodiment of the present invention, in which 20 is an outer casing forming a blower section 19 of a ventilator 21, which is a box and has an intake port 22 at the bottom. An opening 23 is formed on one side wall of the opening 23 and the side wall 24, and an exhaust port 25 communicating with the intake port 22 and intake openings 26a, 26b and 26c are formed on the remaining three side walls. A blower 27 is composed of blades 28 made of, for example, sirocco blades and an electric motor 29. Reference numeral 30 denotes an exhaust passage formed of a duct connected to the exhaust port 25, and reference numerals 31, 32, 33 denote intake passages communicating with the intake openings 26a, 26b, 26c and each ventilation place (not shown).

Reference numerals 34, 35 and 36 denote intake openings 26c and 2
6b, 26a is a damper cover that is engaged and fixed from the upper portion of the outer casing 20, and is rotated inward to rotate the intake passages 37a, 37a.
dampers 38a, 38b, 38 for closing the areas of b, 37c
c, and a fixed hook receiving portion 39 and a fixed tongue portion 40 for engaging a control device described later are provided on the outer wall surface. The control cover mounting surface 42 of the damper cover 34 is provided with an oval low-pressure side pressure detection opening 43, and the other outer surface is fitted with a damper motor 44 for rotationally driving the dampers 38a, 38b, 38c. The recessed recess 45, this damper motor 44
Of the damper 38a, 38
A shaft hole 47 is formed in the moving shape of the rotating shaft 46 connected to b and 38c. Reference numeral 48 denotes a motor cover, which is attached to the damper covers 34, 35, 36 with screws 4
The damper motor 44 is fixed and the damper motor 44 is fixed.

Further, the dampers 38a, 38b, 38
c is biased by a spring 50 in a direction of closing the opening areas of the intake passages 37a, 37b, 37c, and the damper cover 34,
The damper covers 34, 35, 36 contact the adjusting screw 51 screwed to the screws 35, 36 to determine the opening degrees of the dampers 38a, 38b, 38c in the closed position. Further, an intake opening 53 is provided on the anti-main body surface 52 which is the opposite direction of the mounting surface of the damper covers 34, 35, 36 to the outer casing 20, and a jaw portion 54 is provided on the lower side of the anti-main body surface 52.
An opening groove 55 communicating with the inside is provided on the upper surface. In the opening groove 55, the pipe guide 5 having the tongue portion 56 at the lower portion is provided.
7 is inserted and fixed by sandwiching the air volume adjusting plate 58 in the middle. The air volume adjusting plate 58 slides up and down to change the opening area of the intake passages 37a, 37b, 37c. The pipe guide 57 has a mounting surface 59 for the control device, and this mounting surface is provided with an oval high pressure side pressure detection opening 60.

Reference numeral 61 is a control device, and 62 is a case of this control device, which comprises a lower case 65 having an engaging elongated hole 63 and a case fastening screw 64, and an upper case 68 having an engaging claw 66 and a case fastening hole 67. Becomes, long slot 6
3 is engaged with the engaging claw 66, and the case tightening screw 64 and the case tightening hole 67 are aligned and fixed with the screw 69 for assembly.

Reference numeral 70 denotes a pressure sensor, which is a high-voltage connection port 7
1, a low-voltage connection port 72 and an electrical connection connector 73 are provided, and are fixed to the lower case 65 via a holder 74. Reference numerals 75 and 76 denote a high pressure side pressure detecting port and a low pressure side pressure detecting port, respectively, and the hollow protruding portion 7 protruding toward the inside and outside of the lower case 65.
7 and is fixed. The high pressure connection port 71 and the low pressure connection port 72 of the pressure sensor 70 are made of the silicone rubber tube 7.
8 and 79 are connected to the high pressure side pressure detection port 75 and the low pressure side pressure detection port 76, respectively. The control boards 80 and 81 are composed of two sheets, and are electrically connected by a connection electric wire 81a. One of the control boards 80 is fixed to the lower case 65 via a holder 74 with a protective sheet 82 interposed between the control board 80 and the tubes 78 and 79. The other control board 81 is fixed to the upper case 68 via a holder 74.

The control board 80 has an output electric wire 8 connected to the electric motor 29 of the blower 27 and the damper motor 44.
3 and the damper control electric wires 84, 84 are connected to each other, and the electric wire hole 85 provided on the upper portion of the lower case 65 through the control device 61.
Out of the. Further, terminal boards 86 and 87 are arranged below the control board 80, and electrical connection openings 88 and 88 are provided to the lower surface of the lower case 65. The attachment surface of the lower case 65 is provided with fixed hook portions 89 and 90, a fixed screw hole 91, and a fixed tongue receiving hole 92. Reference numeral 93 is setting means of the control device 61, 94 is also comparing means, and 95 is also driving means.

In the ventilator constructed as described above, the exhaust port 25 and the intake opening 2 of the outer casing 20 of the blower unit 19 are provided.
6a, 26b and 26c have damper covers 36, 35 and 3
Wear 4. Then, the control device 61 is attached to the damper cover 34 by the following method. The hollow protrusions 77 of the high pressure side pressure detection port 75 and the low pressure side pressure detection port 76 are inserted into the high pressure side pressure detection opening 60 and the low pressure side pressure detection opening 43, respectively, and fixed hook portions 89 and 90 and a fixed hook receiving portion are inserted. The fixing screw hole 91 and the screw tightening portion 41 are brought into alignment with each other by sliding in the engaging direction of 39 to fix the screw.

The blower unit 19 is installed at a location such as a living room or a bedroom (not shown), and the exhaust port 25 of the blower unit 19 has an exhaust passage 30, intake openings 26a, 26b, 2
The intake passages 31, 32 and 33 are connected to 6c. Then, by supplying power to the ventilation device 21, the pressure signal output from the pressure sensor 70 and the setting signal set by the setting means 93 are compared by the comparing means 94, and the comparison signal 94 is set so that the difference between the two is reduced. Through the driving means 95, the electric motor 29 of the blower 27 is controlled.

As described above, when the control device 61 is attached to the blower section 19, the hollow protrusions 77 of the high pressure side pressure detection port 75 and the low pressure side pressure detection port 76 are projected on the mounting surface of the damper cover 34, and the high pressure side is detected. It is inserted into the side pressure detection opening 60 and the low pressure side detection opening 43, and is slid in the engaging direction of the fixed hook portions 89 and 90 and the fixed hook receiving portion 39 to fix the screw holes 91.
And the screw tightening portion 41 can be combined and fixed by screw tightening, whereby the attachment of the control device 61 to the ventilation device 21 and the connection of the pressure sensor 70, the high pressure side pressure detection opening 60 and the low pressure side pressure detection opening 93 are the same. Complete with work. This allows
Product assembly, repair and inspection work is easy and simple.

[0020]

As described above, according to the present invention, a damper cover having a pressure detecting opening is provided in the intake opening of the outer casing of the ventilation device, and the pressure detecting device and the control device are integrally mounted on the damper cover. As a result, the pressure detection device and the control device do not occupy space in the outer casing and can be attached to the outer casing at one time, which simplifies the work for assembling and repairing the product. Miniaturization and cost reduction can be achieved.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing an embodiment of the present invention.

FIG. 3 is a side view of a damper cover portion showing an embodiment of the present invention.

FIG. 4 is an exploded perspective view of a control device portion showing an embodiment of the present invention.

FIG. 5 is a front view of a control device showing an embodiment of the present invention.

FIG. 6 is a bottom view of a control device showing an embodiment of the present invention.

FIG. 7 is a side view of a control device showing an embodiment of the present invention.

FIG. 8 is a block diagram of a control device showing an embodiment of the present invention.

FIG. 9 is a cross-sectional view showing a conventional ventilation device.

FIG. 10 is a perspective view showing a conventional ventilation device.

[Explanation of reference numerals] 20 Outer casing 21 Ventilation device 22 Intake port 23 Opening 25 Exhaust port 26a Intake opening 26b Intake opening 26c Intake opening 34 Damper cover 35 Damper cover 36 Damper cover 43 Low pressure side pressure detection opening 60 High pressure side Pressure detection opening 61 Control device 70 Pressure sensor

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Hisao Hasegawa 1-3 Komaba-cho, Nakatsugawa-shi Nakatsugawa Works of Mitsubishi Electric Corporation

Claims (1)

[Claims] 1. An outer casing having an opening for forming an intake port at a lower portion, an exhaust port communicating with the intake port on one side wall, and an intake opening portion on the other side wall, and an outer casing provided on the outer case. A pressure detection device for detecting the pressure of the passing flow, a control device connected to this pressure detection device, and a blower that interlocks with this control device and the pressure detection device and blows air from the intake port to the exhaust port, A ventilation device, wherein a damper cover having a pressure detection opening is continuously provided at the intake opening, and the pressure detection device and the control device are integrally attached to the damper cover in a detachable manner.