JP3304033B2 - Heat exchange ventilator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention reduces the load on an air conditioner by performing ventilation while exchanging heat between an air supply from the outside to the room and an exhaust from the room to the outside. The invention relates to a heat exchange type ventilator to be obtained.

[0002]

2. Description of the Related Art FIG. 6 is a plan view and a partial cutaway view showing a conventional general heat exchange type ventilator which ventilates while performing heat exchange between supply and exhaust air. 7 is a longitudinal sectional front view thereof.

As shown in FIG. 1, a conventional general heat exchange type ventilator is located between an upper plate 1 and a lower plate 2 and is connected from an indoor exhaust port 3 to an outdoor exhaust port 4. Exhaust passage 5
And an air supply passage 8 from the outside air inlet 6 to the indoor air inlet 7 are formed to cross each other at substantially the center.

An electric motor 9 is provided near the outlet of the exhaust passage 5.
and an exhaust fan 13 having an impeller 11a housed in a casing 10a, and rotating to exhaust air along the exhaust passage 5 in the room, near the outlet of the air supply passage 8, An air supply fan 1 having an electric motor 9b and an impeller 11b housed in a casing 10b, and rotating to supply air to the outdoor along the air supply passage 8 by rotating.
4 are fixedly installed on the motor stand 15.

At a position where the exhaust passage 5 and the air supply passage 8 between the fans 13 and 14 intersect each other,
A heat exchange element 16 having a rectangular cross section for performing heat exchange between the exhaust gas flowing in the exhaust passage 5 and the air supply flowing in the air supply passage 8 is arranged. The heat exchange is performed by flowing the exhaust gas in a cross shape with each other.

At four corners of the heat exchange element 16, four element rails 17 extending along the length direction are provided.
Two of the four element rails 17 located above and below are fixed to the inner surfaces of the upper plate 1 and the lower plate 2.

One end of each of cables 18a and 18b is connected to each of the electric motors 9a and 9b, and the other ends of these cables 18a and 18b are located indoors when the ventilator is installed on a ceiling or the like. It is connected to a terminal box 19 provided on the front side of the air supply fan 14.

For this reason, the electric motor 9a of the exhaust fan 13
When the cable 18a connected to the terminal box 19 is routed to the terminal box 19, the heat exchange element 16 becomes a hindrance, and it is necessary to bypass this.

To respond to this request, on the back side of the main body,
A bypass chamber 21 defined by a bypass wall 20 is provided, and an extension lead wire 22 is provided inside the bypass chamber 21.
Are arranged, and both ends of the lead wire 22 are inserted through holes provided in the bypass wall 20 and pulled forward. Each end of the extended lead wire 22 and each end of the cable 18a divided into two parts are connected to a connector. The connection for the exhaust fan 13 bypasses the heat exchange element 16 via the bypass chamber 21 by connecting via the bypass chamber 21.

[0010]

However, if the bypass chamber is provided on the back side of the main body and the cable is routed through the bypass chamber as in the above-mentioned conventional example,
Not only does the length of the cable become longer, but the bypass chamber is located on the back side of the main unit, so when replacing the exhaust fan, for example, it is necessary to remove the connector at the back of the main unit, making maintenance easier. There was a problem that became considerably worse.

It is widely used to make a hole in an upper plate, a lower plate, a side plate, or the like, to draw a cable outward while inserting the inside of the hole, and to provide wiring for an exhaust fan. In this case, the cable is exposed on the outer surface of the main body, and the cable may be damaged when the ventilator is installed on a ceiling or the like.

A notch or a hole is provided in the element rail, and a cable is inserted through the notch or the hole, so that the cable is laid over the heat exchange element. However, in this case, when the heat exchange element is held by the element rail, the cable may be damaged at the corner of the heat exchange element.

SUMMARY OF THE INVENTION In view of the above, it is an object of the present invention to provide a heat exchange type ventilator in which a cable having a shorter length can be provided and maintenance can be facilitated.

[0014]

The heat exchange type ventilator according to the present invention comprises an upper plate and an exhaust fan for exhausting indoor air to the outside and an air supply fan for supplying outdoor air to the room. A heat exchange element provided between the fan and the heat exchange element for performing heat exchange between the exhaust gas and the air supply between the two fans ;
In the heat exchanger type ventilating device arranged to hold the cement in the four corners at element rail, the element array of the upper plate or the lower plate
The mounting position of the le, characterized in that the upper or cable passage Ru diverts the element rail the motor cable inserted through allowed for the exhaust fan is located below the heat exchanger elements provided by beading processing And

According to the present invention having the structure described above, when the ventilation device is installed, the motor cable of the exhaust fan located outside the room is passed through the cable passage provided in the upper plate or the lower plate. As a result, a short-cut wiring can be provided across the upper or lower part of the heat exchange element, whereby the length of the cable can be shortened, and the cable can be pulled further forward to facilitate maintenance.

According to the present invention, there is provided an exhaust system for exhausting indoor air to the outside.
An air supply fan and an air supply fan that supplies outdoor air to the room
Is provided between the upper plate and the lower plate, and the exhaust is provided between the two fans.
A heat exchange element for exchanging heat between the air and the supply air.
Hold the four corners of the heat exchange element with the element rails
In the heat exchange type ventilator, in front of the upper plate or the lower plate
The element formed integrally with the upper plate or the lower plate on the surface side end surface
A concave groove extending over the child rail and opening to the end face,
Position the motor cable for the exhaust fan in the groove.
To provide a cable path to bypass the element rail.
It is characterized by Thereby, for example, when the upper plate or the lower plate and the element rail are integrally formed,
Even when it is difficult to provide a cable passage in the upper plate or the lower plate due to the presence of the element rail or the like, the cable passage can be formed using the end surface of the upper plate or the lower plate.

[0017]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a vertical sectional front view showing an embodiment of the present invention, and FIG. 2 is a partially cut-away plan view thereof. The difference between the embodiment and the conventional example shown in FIGS. 6 and 7 is as follows. It is as follows.

That is, on the left and right sides of the heat exchange element 16, the exhaust fan 13 is located in the exhaust passage 5.
However, an air supply fan 14 is arranged in the air supply passage 8, and the exhaust gas flowing through the exhaust passage 5 with the rotation of the exhaust fan 13 and the rotation of the air supply fan 14 Thus, the supply air flowing through the supply passage 8 flows into the heat exchange element 16, where heat exchange is performed.

The motor 9 of the exhaust fan 13
a is connected to one end of a cable 18a. This cable 18a is connected to a terminal box 19 provided on the front side surface of the main body.
Is positioned substantially below the element rail 17 that holds the heat exchange element 16 above the lower plate 2 and passes through a cable passage 30 provided in the lower plate 2 so as to be substantially linear toward the terminal box 19. They extend and are connected to each other via a connector 23.

As described above, when the ventilation device is installed on the ceiling or the like, the cable 18a for the electric motor 9a of the exhaust fan 13 located on the outdoor side is connected to the cable passage 3 provided in the lower plate 2.
By passing through the inside of 0, a short-cut wiring can be provided across the lower part of the heat exchange element 16, whereby the length of the cable 18a can be further shortened.

Moreover, since the cable 18a is located further forward and the cable 18a of the exhaust fan 13 is exposed by removing the element rail 17 from the lower plate 2, the exhaust fan 13 can be easily replaced on the near side. By doing so, the workability can be improved.

Here, the cable passage 30 is formed by providing beading at a lower portion of the element rail 17, and a lower surface of the element rail 17 closes a gap between the element rail 17 and the cable 18a. Packing 31
Is installed. As described above, by closing the gap between the element rail 17 and the cable 18a with the packing 31, it is possible to prevent the exhaust air and the air supply from being confused through the cable passage 30.

Further, by forming the cable passage 30 in a concave shape on the lower side by beading, the sectional modulus is increased and the rigidity is increased.
Can be prevented from deforming the beading even if it is placed on the floor, so that the motor cable 18a is protected from being crushed. Although the above embodiment shows an example in which the cable passage 30 is formed in the lower plate 2, a substantially similar cable passage may be formed in the upper plate 1.

3 to 5 show another embodiment. FIG. 3 is a longitudinal sectional front view, FIG. 4 is a partially cut plan view, and FIG. 5 is an enlarged perspective view of a main part. .

In the above embodiment, since the lower plate 2 and the element rail 17 are formed separately, the cable passage 30 can be easily provided in the lower plate 2. Since the plate 2 and the element rail 17 are integrally formed,
This is an optimal example when it is difficult to provide a cable passage in the lower plate 2 due to the presence of the element rail 17. That is,
In this embodiment, a cable passage 40 is formed at the front end of the lower plate 2 of an integrally formed member in which the lower plate 2 and the element rail 17 are integrally formed.

The cable passage 40 has a rectangular groove 41 having a rectangular cross section which extends under the element rail 17 and is opened at the lower end of the lower plate 2. At both ends in the length direction of the lower plate 2 are provided with an inlet through-hole 42 and an outlet through-hole 43.

Further, in this embodiment, the inside diameter of the entrance through-hole 42 is set to be the same as the outside diameter of the cable 18a.
To prevent leakage here, the outlet through-hole 43 has a rectangular cross section and a packing 44 is inserted therein to maintain the airtightness here.
The outer diameter of the packing 44 is made equal to the outer diameter of the cable 18a.
Of course, it is possible to omit or to insert a packing into the inlet through-hole 42 to ensure more secure airtightness here.

By forming the cable passage 40 in this manner, when the heat exchange element 16 is held by the element rail 17, the cable 18a inserted through the cable passage 40 hinders the holding. Nothing.

In this case, since the cable 18a bypasses the front side of the main body, the length of the cable 18a is slightly longer than that of the embodiment, but the concave groove 41 serves as a cable guide passage. Therefore, a cable fixing device in the middle of wiring can be eliminated. Also in this embodiment, a cable passage having substantially the same configuration as that described above can be formed in an integrally molded product in which the upper plate 1 and the element rail 17 are integrally molded.

[0030]

As described above, according to the present invention,
When the ventilator is installed on the ceiling etc., the length of the cable for the exhaust fan located outside the room can be reduced and the cable can be routed, thereby eliminating parts such as cable fixtures, connectors and packing. In addition, maintenance and workability can be improved by positioning the cable on the near side.

[Brief description of the drawings]

FIG. 1 is a vertical sectional front view showing an embodiment of the present invention.

FIG. 2 is a plan view of the same, partly broken away.

FIG. 3 is a longitudinal sectional front view showing another embodiment of the present invention.

FIG. 4 is a plan view, partly broken away.

FIG. 5 is also an enlarged perspective view of a main part.

FIG. 6 is a partially cutaway plan view showing a conventional example.

FIG. 7 is a vertical sectional front view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Upper plate 2 Lower plate 5 Exhaust passage 8 Air supply passage 13 Exhaust fan 14 Air supply fan 16 Heat exchange element 17 Element rail 18a, 18b Cable 30, 40 Cable passage 31, 44 Packing 41 Concave groove

──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Taku Kawanishi 4-2-1 Motofujisawa, Fujisawa-shi, Kanagawa Inside Ebara Research Institute Co., Ltd. (56) References JP-A-4-283333 (JP, A) Hei 7-239134 (JP, A) Fully open 1988-162230 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F28D 9/00 F24F 7/08 F24F 1/00

Claims (2)

(57) [Claims] 1. An exhaust fan for exhausting indoor air to the outside of a room and an air supply fan for supplying outdoor air to the room between an upper plate and a lower plate, and the exhaust fan is provided between the two fans. the heat exchange element for exchanging heat between the air supply and, heat exchange et
In a heat exchange ventilator in which four corners of the element are held and arranged by element rails, at the mounting position of the element rail on the upper plate or the lower plate,
The electric motor cable for the exhaust fan is inserted above or below the heat exchange element to
Beading process the cable passage Ru diverts rail
A heat exchange type ventilator characterized by being provided by: (2)An exhaust fan that exhausts indoor air to the outside
Top plate with an air supply fan to supply indoor air with outdoor air
Between the two fans and the exhaust and air supply
The heat exchange element that exchanges heat with the heat exchange element
Heat exchange where the four corners of the element are held by element rails
In the form ventilation device, The upper plate or the lower plate is provided on the front end surface of the upper plate or the lower plate.
Extending over the element rail formed integrally with the
A groove that opens in the groove, and the groove for the exhaust fan is provided in the groove.
Position the motor cable and bypass the element rail.
Heat exchange type characterized by having a cable passage
Ventilation equipment .