JP2003014268A - Air conditioning ventilator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioning ventilator in which parts forming a heat exchanging element assembly are easily formed and assembled so as to reduce a manufacturing time. SOLUTION: The air conditioning ventilator comprises a box type main body opened to an indoor part and having therein an exhaust passage intersecting an air supply passage through which the indoor part communicates with an outdoor part, the heat exchanging element assembly 13 provided in the intersecting part of the exhaust passage and the air supply passage and performing a heat exchange between air passing these passages, an exhaust fan provided in the exhaust passage 7, an air supply fan provided in the air supply passage and a motor for driving the exhaust fan and the air supply fan. The heat exchanging element assembly 13 includes a heat exchanging element 15 and an element housing frame 14 for housing the heat exchanging element 15. The element housing frame 14 has two frame parts 14a and 14a of the same form which have first attaching parts 27 capable of attaching two kinds of filters 16 and 18 on the same surfaces.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention exhausts dirty air in a room and supplies fresh air outdoors to the room.
The present invention relates to an air conditioning ventilation fan that exchanges heat between these airs.

[0002]

2. Description of the Related Art Conventionally, there has been an increasing demand for an air-conditioning ventilation fan that heats indoor air and outdoor air having different temperatures by intersecting each other so as not to mix them.

FIG. 6 is an explanatory view showing an example of a ventilation path of a conventional general air-conditioning ventilation fan. This kind of air conditioning ventilation fan 10
1 is a front grill 103 having two openings 102, 102 on the front side and two openings 104, 104 on the back side.
A box-shaped main body case 101A including a main body frame 105 having an exhaust gas is provided. Inside the main body case 101A, there are two exhaust holes 107, 107 provided in the room wall 106 for communicating the inside and the outside of the room. A passage 112 and an air supply passage 115 are formed. The exhaust passage 112 and the supply passage 115 are sectioned and crossed in the main body case 101A,
This intersection is provided on the left side inside the main body. A heat exchange element assembly 120 is provided at this intersection, and when the air passing through the passages 112 and 115 passes through the heat exchange element assembly 120, heat exchange between the air is performed.

On the right side of the inside 101A of the main body, the air supply passage 1
The air supply fan 117 having the spiral air-supply air supply fan case 117 provided in FIG.
The exhaust fan 114 having the spiral exhaust fan case 114 provided in the above is disposed. Air supply fan case 117
Is attached to the main body frame 105, and the exhaust fan case 113 is attached to the front surface of the air supply fan case 116 via the partition cover 120. Partition cover 120
A motor 123 having a rotating shaft in the front-rear direction is attached to each of the above, and the exhaust fan 114 and the air supply fan 117 are attached to each rotating shaft.

An electric equipment box (not shown) is arranged on the lower right outside of the exhaust fan case 113 and the air supply fan case 116, and a pull switch for operating the motor 123 is built in the electric equipment box. ing. By operating this pull switch, the air conditioning and ventilation fan 101 is operated and stopped.

[0006]

By the way, the heat exchange element assembly 120 comprises a heat exchange element having a rhomboidal prism shape and an element storage frame for storing the heat exchange element.
The element storage frame is assembled from a plurality of parts. And
A mounting portion for mounting various filters is provided on the outside of the element storage frame. Therefore, although the heat exchange element assembly 120 has a simple structure, it takes time and cost to assemble and manufacture the parts. Therefore, it has been a problem to make the components used in the heat exchange element assembly 120 easy and to assemble the components easily.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an air conditioning ventilation fan that facilitates the fabrication of the components constituting the heat exchange element assembly and reduces the fabrication time by facilitating the assembly. To do.

[0008]

In order to achieve the above object, the invention described in the claims is in the form of a box opening to the inside of the room, and an exhaust passage and an air supply for communicating the inside and the outside of the box. A main body formed by intersecting passages, a heat exchange element assembly provided at an intersection of the exhaust passage and the air supply passage for exchanging heat between air passing through these passages, and the exhaust passage are provided. In an air conditioning ventilation fan including an exhaust fan, an air supply fan provided in the air supply passage, and a motor for driving the air supply fan and the exhaust fan, the heat exchange element assembly includes a heat exchange element and the heat exchange element. And a device housing frame for housing the device housing device. The device housing frame is composed of two frame parts having the same shape, and a first mounting portion capable of mounting two types of filters is provided on the same surface.

According to a second aspect of the present invention, in the air-conditioning ventilation fan according to the first aspect, a second mounting is provided on the element housing frame, in which a different type of filter can be mounted on a surface intersecting the first mounting portion. It is characterized by having a section.

According to a third aspect of the present invention, in the air-conditioning ventilation fan according to the first or second aspect, the element storage frame is located below the first mounting portion and the second mounting portion of the filter, respectively, and the filter is displaced and dropped. It is characterized in that a stopper for preventing the above is provided.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to FIG.
~ It demonstrates based on the drawing of FIG. 1 is a perspective view of an air conditioning ventilation fan according to an embodiment of the present invention, FIG. 2 is a plan view showing an exhaust passage and an air supply passage of the air conditioning ventilation fan of FIG. 1, and FIG.
FIG. 7 is a perspective view showing a state in which the front grill is removed.

In FIG. 1, a main body 1A of an air conditioning ventilation fan 1
Is a main body frame 2 having a back plate and two left and right openings formed on the back plate, and two left and right openings 3 on the front side.
A box-shaped main body case 4 including a front grill 3 having a and 3b is provided and installed on the chamber wall.

In FIG. 2, the inside and outside of the body 1A are communicated with each other through two through holes 6 and 6 provided in the chamber wall 5 and two openings 9a and 9b formed in the body frame 2. The exhaust passage 7 and the air supply passage 8 are formed so as to intersect with each other. The intersection 12 is located on the left side in the main body 1A, and the heat exchange element assembly 13 is disposed in the intersection 12.

In FIG. 3, the heat exchange element assembly 13 is shown.
Has a rhomboidal prismatic shape at the upper and lower ends, and is arranged in the main body 1A so that the acute-angled portions of the rhombus are on the left and right sides.
The heat exchange element 15 and the element storage frame 14 that stores the heat exchange element 15 are provided. On the right outer surface on the rear side of the element storage frame 14, as shown in FIG. A pre-filter 17 is mounted on the outer side, and a deodorizing filter 18 is mounted on the front left outer side.

FIG. 4 is an external perspective view of the heat exchange element assembly, and FIG. 5 is an exploded perspective view of the heat exchange element assembly. In FIG. 4, the element storage frame 14 has a prismatic shape having upper and lower diamond-shaped end surfaces, and includes a diamond-shaped upper plate 21 and a lower plate 22,
A plurality of vertical bars 23 provided between the upper and lower plates 21, 22.
a, 23b, 23c, 23d, and a horizontal rail 24 provided at the center of the vertical rail.

In FIG. 5, the frame part 14a is composed of two frame parts 14a of the same shape, and the element housing frame 14
The upper plate 21 and the lower plate 22 are vertically divided along substantially diagonal lines. Since the vertical bars 23a and the vertical bars 23c of the two frame parts 14a are overlapped and joined to each other, one of the vertical bars 23a has three projections 25, and the other vertical bar 23c has the above-mentioned structure. Three holes 26 that engage with the protrusions 25 are formed.

Further, a first mounting portion 27 to which either the outside air filter 16 or the deodorizing filter 18 can be attached is formed on the left outer surface (inside the air supply passage) of the frame part 14a.
Two filters 16 and 18 can be attached. The left vertical bar 23a of this surface is formed with a claw 31 protruding rightward from the left vertical bar 23a, and the right vertical bar 23b is provided with a right vertical bar 2a.
3b, a first locking portion 32a protruding leftward, and a second locking portion 32 further formed stepwise from the outside to the left.
A locking piece 32 having b and is formed. Further, a stopper 36 protruding forward is provided at the lower part of this surface in order to prevent the filter from shifting downward or dropping.

When the outside air filter 16 is mounted, the outside air filter 16 is applied to the outer surface of the left side, and the claw 31 of the left vertical bar 23a and the first locking portion 32a of the right vertical bar 23b are attached.
Sandwich it between. When the deodorizing filter 18 is attached, the deodorizing filter 18 is applied to the outer surface of the left side and is sandwiched between the claw 31a of the left vertical bar 23a and the second locking portion 32b of the right vertical bar 23b. In this way, the mounting portion 27 is provided so that the two types of filters 16 and 18 can be held. When the filters 16 and 18 are attached, the lower edges of the filters are in contact with the stopper 36.

Further, a mounting portion 28 on which the prefilter 17 can be mounted is formed on the right outer surface (exhaust passage) of the frame part 14a. A claw 33a protruding rightward from the left vertical bar 23 is formed on the left vertical bar 23 of the outer surface, and a claw 33b protruding leftward from the right vertical bar 23 is formed on the right vertical bar 23. ing. Further, a stopper 37 protruding forward is provided at the lower part of this surface in order to prevent the filter from slipping downward or dropping.

When the pre-filter 17 is attached, the pre-filter 17 is applied to the outer surface of the right side and is sandwiched between the claw 33a of the left vertical bar 23b and the claw 33b of the right vertical bar 23c. At this time, the lower edge of the pre-filter 17 is in contact with the stopper 37.

The outside air filter 16 is, as shown in FIG.
The heat exchange element assembly 13 is mounted on the rear right side of the air supply passage 8 to prevent outside dust and dust from entering the heat exchange element 15 and the room, and the pre-filter 17 is provided in the heat exchange element assembly 13. It is mounted on the right side of the front of the exhaust passage 7 to prevent dust, dust and the like in the room from entering the heat exchange element 15.
The deodorizing filter 18 is attached to the front left side of the air supply passage 8 to prevent outdoor odors from entering the room. The outside air filter 16 and the pre-filter 17 have almost the same size as the element housing frame 14, and the deodorizing filter 18 serves as the element housing frame 14.
The width is smaller than that of one surface.

The heat exchange element 15 is housed inside the element housing frame 14 with its upper and lower end faces having a rhomboidal prismatic shape. The heat exchange element 15 has a plurality of elements which are alternately crossed and stacked, and two element ventilation paths are formed inside.
The element ventilation passage in one direction communicates with the exhaust passage 7 and the element ventilation passage in the other direction communicates with the air supply passage 8, and heat exchange is performed between the air passing through these element ventilation passages.

As described above, since the mounting portion 27 on which the two kinds of filters 16 and 18 can be mounted is formed on one surface of the frame component 14a, the front left side and the rear right side of the element storage frame 14 are interchanged and arranged. Therefore, the element storage frame 14 can be manufactured by combining two same parts (frame parts 14a). Therefore, one type of component (frame component 14
The element storage frame 14 can be formed by combining a), and the number of types of parts can be reduced. Further, the heat exchange element assembly 13 is point-symmetrical with respect to a vertical center line passing through the centers of the upper plate 21 and the lower plate 22, and it is necessary to confirm the front and rear direction of the heat exchange element assembly 13 when mounting the filter. Therefore, the confirmation time can be reduced and the mounting work can be made more efficient.

The outside air filter 16 and the deodorizing filter 18 have mounting portions 27 on the left and right edges and a stopper 36 on the lower edge.
Since it is held down by, it does not easily fall from the element storage frame 14. Similarly, the prefilter 17 is attached to the mounting portion 2
Since it is pressed by the stopper 8 and the stopper 37, it does not easily fall from the element storage frame 14.

In FIG. 3, on the right side inside the main body 1A,
A resin-made spiral air supply fan case 41 having an air supply fan 45 inside and provided in the air supply passage 8, and an exhaust fan 4 inside.
6 and a spiral type exhaust fan case 42 made of resin provided in the exhaust passage 7 are provided. Air supply fan case 41
A partition cover 43 is provided between the exhaust fan case 42 and the exhaust fan case 42, and a motor 44 having a rotating shaft in the front-rear direction is arranged on the partition cover 43. An air supply fan 45 and an exhaust fan 46 are provided on these rotating shafts, respectively. And are attached.

An electric equipment box 61 is arranged at the lower right of the outer peripheral portions of the air supply fan case 41 and the exhaust fan case 42. Inside the electric equipment box 61, a capacitor for the motor and a lead wire to the motor are provided. A connected operation switch (not shown) is provided. Pull string 6 for operation switch
7, the drawstring 67 is hung below the main body 1A through a through hole formed on the lower side of the main body 1A. By pulling the pull cord 67, the operation switch is operated and the air conditioning ventilation fan 1 can be operated.

When the air conditioning ventilation fan 1 starts to operate, the air supply fan 45 and the exhaust fan 46 rotate, and the air supply fan 45
Sucks the outside air through the rear opening 9b and
The air is sent to the left inside, and outside air is introduced into the room through the left opening 3a of the front grill 3 through the heat exchange element assembly 13. Further, the exhaust fan 46 sucks indoor air from the right opening 3b of the front grill 3 and sends it to the left inside the main body case 4, and through the heat exchange element assembly 13, the left opening 3 of the front grill 3.
The air in the room is discharged via a. The outside air and the room air are heat-exchanged when passing through the heat exchange element assembly 13, so that the loss of heat energy in the room can be reduced and ventilation can be performed.

Although the present invention has been described based on the embodiment, the present invention is not limited to this.

[0029]

As described above, the air-conditioning ventilation fan of the present invention has the element storage frame formed by combining the same two parts by forming the mounting portion on which the two kinds of filters can be mounted on one surface of the frame part. It can be manufactured, and the number of parts of the element storage frame can be reduced. As a result, it is not necessary to prepare or sort two types of parts, so that the manufacturing time can be reduced and the working time can be improved.

[Brief description of drawings]

FIG. 1 is an external perspective view showing an air conditioning ventilation fan according to an embodiment of the present invention.

FIG. 2 is a plan sectional view of FIG.

FIG. 3 is a perspective view showing a state in which a front grill of FIG. 1 is removed.

FIG. 4 is an external perspective view of the heat exchange element assembly according to the embodiment of the present invention.

5 is an exploded perspective view of the heat exchange element assembly of FIG.

FIG. 6 is a plan view showing an exhaust passage and an air supply passage of a conventional air conditioning ventilation fan.

[Explanation of symbols]

1 Air conditioning ventilation fan 1A body 3a, 3b opening 7 exhaust passage 8 air supply passages 9a, 9b opening 12 intersection 13 Heat exchange element assembly 14 element storage frame 14a Frame parts 15 Heat exchange element 16 Outside air filter 17 Pre-filter 18 Deodorizing filter 27 Mounting part (first mounting part) 28 Mounting part (second mounting part) 31 nails 32 locking piece 32a First locking portion 32b Second locking portion 36, 37 stopper 44 motor 45 Air supply fan 46 Exhaust fan

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Keiyo Kasahara             1 Otsuki-cho, Ashikaga City, Tochigi Prefecture Sanyo Electric Air Conditioning             Within the corporation

Claims (3)

[Claims] 1. A body having a box-like shape that opens to the inside of a room, the inside of which is formed by intersecting an exhaust passage and an air supply passage communicating with the inside and the outside of the body, and an intersection of the exhaust passage and the air supply passage. A heat exchange element assembly for exchanging heat between the air passing through these passages, an exhaust fan provided in the exhaust passage, an air supply fan provided in the air supply passage, and these air supply fans. In the air-conditioning ventilation fan including a motor for driving an exhaust fan, the heat exchange element assembly includes a heat exchange element and an element storage frame for storing the heat exchange element, and the element storage frame has the same shape. An air-conditioning ventilation fan comprising a single frame part, and a first mounting part capable of mounting two types of filters on the same surface. 2. The air-conditioning ventilation fan according to claim 1, wherein the element housing frame is provided with a second mounting portion to which a different type of filter can be mounted on a surface intersecting with the first mounting portion. 3. The element housing frame according to claim 1, wherein stoppers for preventing the filter from slipping and dropping are provided at the lower portions of the first mounting portion and the second mounting portion of the filter, respectively. Air conditioning ventilation fan.