JPH0681614U - Filter device - Google Patents

Abstract

(57) [Abstract] [Purpose] To obtain a filter device that prevents the reduction of the air volume due to the clogging of the filter and can easily check the prevention structure. [Structure] The pressure detector 31 is provided on the upstream side wall of the box 11.
And the filter body 20 that can be inserted and removed is provided inside the box body 11, and an opening for inserting and removing the filter body 20 is provided on the side surface of the box body and on the surface where the pressure detector 31 is installed. . [Effect] By reducing the amount of air flow due to clogging by inspecting the filter, both the filter and pressure detector can be easily inspected simultaneously from one side of the box.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a filter device provided in a ventilation passage.

[0002]

[Prior art]

 FIG. 10 is a perspective view showing a conventional ventilation device disclosed in, for example, Japanese Utility Model Laid-Open No. 51-141162, in which 1 is a suction port 2 and a discharge port is one set for the indoor side and one is for the outdoor side. A box body (not shown) is provided with an opening 3 on the side wall. 4 is an exhaust passage extending from the indoor suction port 2 provided in the box body 1 to the outdoor discharge port; 5 is an air supply passage provided in the box body 1 extending from the outdoor suction port to the indoor discharge port It is formed so as to intersect with the above exhaust passage 4. Reference numeral 6 is a heat exchanger provided at the intersection of the exhaust passage 4 and the supply passage 5 so as to be removable from the opening 3, and 7 is a filter provided so as to be removable from the opening 3.

Although not shown, blowers for forming exhaust air and air supply are provided in the exhaust passage 4 and the air supply passage 5, respectively, and the suction port 2 and the discharge port are provided indoors and outdoors. A duct that communicates with is provided.

The conventional ventilator is configured as described above, and the intake port 2 and the discharge port are provided with ducts communicating with the inside and the outside of the room, and by operating the blower, the indoor air is supplied to the inside of the room through the ducts. It enters the exhaust passage 4 from the suction port 2, passes through the filter 7 and the heat exchanger 6, and is exhausted to the outside from the outdoor discharge port through the duct. On the other hand, the outdoor air enters the air supply passage 5 through the duct from the outdoor suction port, passes through the filter 7 and the heat exchanger 6, and is supplied to the room through the duct from the indoor discharge port. At this time, heat is exchanged between the exhaust air flow and the air supply flow by the heat exchanger 6 to reduce the heating and cooling load, and the filter 7 removes dust contained in the air supply air and the exhaust air flow to remove heat from the heat exchanger. 6 is designed to prevent clogging, and when the filter becomes dirty, it is taken out from the opening 3 and cleaned.

[0005]

[Problems to be solved by the device]

 In the ventilation device as described above, even if dust is attached to the filter 7 and the filter is clogged, the condition is not known and the filter is used continuously, so that there is a problem that a sufficient air flow cannot be obtained.

The present invention has been made to solve the above problems, and it is an object of the present invention to obtain a filter device in which the clogging state of a filter can be detected by a pressure detector and the filter and the pressure detector can be easily inspected. To aim.

[0007]

[Means for Solving the Problems]

 For this reason, in this invention, a box body having an air passage extending from the suction port to the discharge port, a filter body provided in the box body so as to cross the air passage, and a side surface of the box body, The filter body is provided with an opening for inserting / removing into / from the box body, and a pressure detector provided in the box body upstream or downstream of the filter body. It is characterized in that it is provided on the same side as the existing surface.

Further, the pressure detector is attached to a mounting plate that can be attached to and detached from the box body, and the attaching / detaching direction of the mounting plate and the inserting / removing direction of the filter body with respect to the box body are the same direction.

Further, the pressure detector has a pipe communicating with the upstream and the downstream of the box body outside the box body, and the pipe is provided so as to bypass the opening.

[0010]

[Action]

 In this invention, even if the filter body is clogged, the pressure detector can detect this clogging, so by maintaining the filter body appropriately, the air flow rate of the filter device can be ensured, and the pressure detector, Since the opening for inserting and removing the filter body is provided on the same surface of the box body, the pressure detector and the filter body can be inspected on one side of the box body.

Further, since the attachment / detachment direction of the mounting plate to which the pressure detector is attached and the insertion / removal direction of the filter body with respect to the box body are the same direction, the inspection of both is further facilitated.

Further, since the pipe of the pressure detector exposed to the outside of the box body bypasses the opening, it is less likely to interfere with the inspection of the filter body.

[0013]

【Example】

1 to 7 are views showing an embodiment of the present invention, in which 11 is provided with a suction port 12 and a discharge port 13, and an air passage 14 extending from the suction port 12 to the discharge port 13 is formed. A box having an opening 15 on the side wall, which is attached to the wall 17 by a hanging tool 16. Reference numeral 18 is a duct connector provided at each of the suction port 12 and the discharge port 13, 19 is a duct attached to the duct connector, and 20 is a filter body that is detachably attached from the opening 15. A connecting member 24 formed of an elastic body having a frame body 21 and a filter 22 provided in the frame body and having an engaging portion 23 on the outer surfaces of the side walls facing each other in the longitudinal direction in which the frame body 21 is inserted and removed. It is provided.

Reference numeral 25 is a lid that covers the opening 15 after the filter body 20 is inserted, 26 is a ceiling having an inspection port 27, and 28 is formed in the side wall of the box body 11 upstream and downstream of the filter body 20. Pressure detecting hole, 29 is a pipe connecting member screwed so as to communicate with the downstream pressure detecting hole, and 31 is a pressure detector provided so as to communicate with the upstream pressure detecting hole. The pipe 32 communicates with the pipe connecting member 29 via a pipe 33. Further, the pressure detector 31 is provided on the same side of the side wall of the box 11 as the opening 15 (shown in FIG. 1). Reference numeral 34 is a mounting plate to which this pressure detector is attached, and a packing 35 is attached to the contact surface with the box body 11 described above. The attachment / detachment direction of the mounting plate 34 to / from the box body 11 is the same as the insertion / removal direction of the filter body 20 to / from the box body 11 (shown in FIGS. 2 and 4, 6).

Reference numeral 36 denotes a switch which is turned on and off by a member which is interlocked with a diaphragm (not shown) which is provided in the pressure detector 31 and which fluctuates depending on the pressure, and 37 is connected to this switch through a lead wire 38 and is mounted as described above. A terminal block attached to the plate 34, 39 is a cover for covering the terminal block 37, the lead wire 38, the pressure detector 31 and the like. Although not shown, when the pressure detector 31 is not necessary, a shield plate for closing the pressure detection hole 28 instead of the mounting plate 34 and the pipe connecting member 29 can be attached by using a screw hole. It has become.

In the filter device configured as described above, by connecting a blower to one of the ducts 19 to blow air, the outdoor air is sucked from the suction port 12 through the duct 19 and the filter of the filter body 20 is filtered. Dust contained in the air supply is removed at 22 and the air is supplied to the room from the discharge port 13 through the duct 19. By removing dust with the filter body 20 in this way, the filter body 20 is clogged and the air flow rate is reduced. Along with this, the pressure difference between the upstream side and the downstream side of the filter body 20 becomes large, and the pressure detector 31 turns on the switch 36 to turn on a lamp or the like connected via the terminal block 37 to notify the clogging state. The dirty filter body 20 may be cleaned by removing the lid 25 and taking it out from the opening 15.

Further, the filter body 20 is connected to two or more by engaging the engaging portions 23 of the connecting members 24 provided on the frame body 21 with each other, and is inserted through the opening 15. The lid 25 is attached so that the connecting members 24 at both end portions of the filter body 20 are pressed. As a result, no gap is formed between the connecting member 24 and the box 11, and the airflow does not leak from the outside of the filter 22. With this configuration, the size of the box body 11 can be changed by changing the number of connected filter bodies 20, and the filter body 20 can be standardized and manufactured at low cost.

By the way, when the filter body 20 can be regularly cleaned and the pressure detector 31 is not needed, the shield plate for closing the pressure detection hole 28 instead of the mounting plate 34 and the pipe connecting member 29 is used. If you install, the number of parts will be small and it will be cheap. In the above embodiment, the mounting plate 34 is provided with the pressure detector 31 and only the detection hole of the pressure detector 31 is inserted into the pressure detection hole 28. However, as shown in FIGS. Air leakage can be reliably prevented by bringing the flange portion 31a of the container 31 into contact with the peripheral side wall of the pressure detection hole 28 and sandwiching it by the mounting plate 34a having the recess 40 formed therein. Further, the pressure detector 31 may be provided on either the upstream side or the downstream side, and the pressure detection may be reversed on the positive pressure side and the negative pressure side.

[0020]

[Effect of device]

 In this invention, since the pressure detector can detect clogging and properly maintain the filter body, even if the filter body is clogged, it is possible to secure the air flow rate of the filter device, and the pressure detector and Since the opening for inserting and removing the filter body is provided on the same surface of the box body, the pressure detector and the filter body can be inspected on one side of the box body, which has the effect of facilitating the inspection.

Further, since the attachment / detachment direction of the mounting plate to which the pressure detector is attached is the same as the insertion / removal direction of the filter body with respect to the box body, there is an effect that both can be easily inspected.

Further, since the pipe of the pressure detector exposed to the outside of the box body bypasses the opening, there is an effect that the insertion / removal work can be smoothly performed with the pipe attached when inspecting the filter body.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing a taken out state of a filter body 20 according to an embodiment of the present invention.

FIG. 3 is a plan view showing a filter body 20 according to an embodiment of the present invention.

FIG. 4 is a perspective view showing a mounted state of a pressure detector 31 according to an embodiment of the present invention.

FIG. 5 is a pipe 33 and a cover 39 according to an embodiment of the present invention.
It is a perspective view showing an attached state of.

FIG. 6 is a side view showing a state in which the pressure detector 31 and the like are attached to the attachment plate 34 of the embodiment of the present invention.

FIG. 7 is a front view of FIG. 6 showing an embodiment of the present invention.

FIG. 8 is a perspective view showing a mounted state of a pressure detector 31 showing another embodiment of the present invention.

FIG. 9 is a side view showing a mounting plate 34a according to another embodiment of the present invention.

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

[Explanation of symbols]

 11 Box Body 12 Suction Port 13 Discharge Port 14 Ventilation Path 15 Opening 20 Filter Body 28 Pressure Detection Hole 31 Pressure Detector 33 Pipe 34 Mounting Plate

Claims (3)

[Scope of utility model registration request] 1. A box body having an air passage extending from a suction port to a discharge port, a filter body provided on the box body so as to cross the air passage, and a filter provided on a side surface of the box body. An opening for inserting / removing a body into / from the box body, and a pressure detector provided on the box body upstream or downstream of the filter body, the pressure detector, a surface where the opening is present in the box body A filter device provided on the same surface side. 2. The pressure detector is attached to a mounting plate which is attachable to and detachable from the box body, and the attaching and detaching direction of the mounting plate and the inserting and removing direction of the filter body with respect to the box body are the same direction. The filter device according to claim 1. 3. The pressure detector has a pipe communicating with an upstream side and a downstream side of the box body outside the box body, and the pipe is provided so as to bypass the opening. Filter device.