JPH033866B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a ventilation system that performs ventilation while exchanging heat between indoor air and outdoor air.

Conventional Structures and Problems Generally, when heating and cooling a room, it is desirable to replace as much dirty air inside the room with fresh outside air to keep the room comfortable and sanitary. However, ventilation increases heat loss in proportion to the ventilation, which is undesirable because the operating costs for air conditioning and heating increase. For this reason, ventilation systems have been developed that incorporate a heat exchanger so that they can simultaneously discharge indoor air and suck in outside air, and exchange sensible heat between the discharged air and the intake air. Heat loss due to ventilation during heating and cooling has been reduced.

Broadly speaking, there are two types of air conditioning ventilation devices of this type. One is an air conditioning ventilation system equipped with a rotary sensible heat exchanger, and the other is an air conditioning ventilation system equipped with a plate type sensible heat exchanger. FIG. 1 is a schematic perspective view of a rotary sensible heat exchanger 1. FIG. This sensible heat exchanger 1
This is a structure in which substrates 2 made of corrugated plates with good heat storage properties and flat substrates 3 are alternately stacked and rolled up into a cylindrical shape. Therefore, there is a drawback that a large number of manufacturing steps are required. Furthermore, compared to a stationary plate type sensible heat exchanger, this rotary type requires a driving electric motor to rotate the heat exchanger, so it also has the disadvantage of higher material costs.

FIG. 2 is a schematic perspective view of the plate type sensible heat exchanger 4. This sensible heat exchanger 4 has a structure in which spacer plates 6 formed into corrugated shapes are sandwiched between partition plates 5 made of a material with good thermal conductivity, with the directions of the corrugated shapes alternated by 90 degrees. It is becoming. Therefore, this type of heat exchanger also has the disadvantage of requiring a large number of manufacturing steps.

Furthermore, since the direction of air flowing inside the heat exchanger 4 is constant, it also has the disadvantage that, when used for a long period of time, clogging occurs and the air volume decreases. Furthermore, when using the above two types of heat exchangers, air supply and exhaust are performed simultaneously, so there is also the drawback that two blowers are required.

Purpose of the Invention This invention aims to improve the above-mentioned conventional drawbacks.
The purpose of the present invention is to provide a ventilation device with a sensible heat exchange function that has a simple structure and is inexpensive.

Structure of the Invention The present invention has a partition plate made of a thermally conductive material in two air flow paths communicating between an indoor side and an outdoor side so that the air flows in both air paths do not intersect, and a casing. A blower equipped with a means for rotating is provided so as to span both air paths, and the casing has a structure in which the rotation axis of each air path is offset by 180 degrees with respect to the rotation axis, and the impeller of the blower The casing is made of a material that is non-hygroscopic but has heat storage properties, and by rotating the casing, heat storage in the impeller and casing of the blower is utilized for simultaneous supply and exhaust heat exchange ventilation. becomes possible.

DESCRIPTION OF EMBODIMENTS An embodiment of the ventilation apparatus according to the present invention will be described below with reference to FIGS. 3 and 4.

In the figure, 7 is a box, 8 and 9 are air flow paths connecting the indoor side and the outdoor side, and 10 is a blower, which in this embodiment is a cross flow fan. 11 is the blower 10
12 is the casing of the blower 10.

13 is a partition plate separating both air flow paths 8 and 9; 22
Similarly, 24 is a partition plate provided on the blower 10 to separate two air paths, and 24 is also a casing 12.
A partition plate provided between the impeller 11 and the impeller 11 is made of metal in the embodiment, but it may also be made of plastic or the like. On the other hand, the impeller 11 and the casing 12 are preferably made of a material with high heat storage properties. In this embodiment, metal is also used. 14 is a rotating shaft of the impeller 11, 15 is an electric motor that drives this rotating shaft 12,
The electric motor 15 is fixed to the box body 7 via a fixture 16. Further, the casing 12 has a cylindrical outer shape, and is provided with a suction port 17 and a discharge port 18 at substantially symmetrical positions with respect to the rotating shaft 14 . Further, the lower end of the casing 12 is fixed to a bearing 19 and a gear 20, and the lower end of the casing 12 is fixed to a bearing 19 and a gear 20.
is decelerated and driven by an electric motor 15 via a gear train 21.

A seal 23 is made of a rubber plate to avoid mixing of indoor air and outdoor air as the casing 12 rotates.

Next, the operation of this ventilation system will be explained. When the electric motor 15 is driven, the impeller 11 starts rotating.

On the other hand, since the casing 12 is connected to the electric motor 15 via the gear train 21, the electric motor 15 drives the casing 12 at a reduced speed. Partition plate 2 as shown in Figure 4a
Above 2, air sucked into the casing 12 from the indoor side through the suction port 17 contacts the surface of the casing 12 and the surface of the impeller 11, gives heat to these, and is discharged to the outside from the discharge port 18. be done. That is, the heat inside the room is stored in the materials of the casing 12 and the impeller 11 .

Since the casing 12 rotates slowly, the suction side moves to the outdoor side after a predetermined period of time. Therefore, the air sucked in from the outdoor side is
2 and the impeller 11, the previously stored heat is given by the materials of the casing 12 and the impeller 11, and the air approaches the state of indoor air and is supplied indoors. On the other hand, as shown in FIG. 4b, the impeller 11 and the casing 1 are located below the partition plate 22.
2 has an integral structure with the parts of the impeller 11 and casing 12 located above the partition plate 22 shown in FIG. 4a, and operates in the same way.
The casing 12 shown in FIG. 4A is rotated 180° relative to the casing shown in FIG. 4A.

Therefore, air currents in different and opposite directions always flow in the air flow paths 8 and 9. That is, when the exhaust flow from the indoor side is flowing through the air flow path 8, the air supply flow from the outdoor side is flowing through the air flow path 9. When the casing 12 rotates and the supply air flow flows through the air flow path 8, the exhaust air flow flows through the air flow path 9. In this way, in the ventilation system having the structure of this embodiment, if the rotational speed of the casing 12 is appropriately selected, continuous simultaneous air supply and exhaust ventilation can be performed without greatly changing the indoor temperature. .

As shown in the above example, heat exchange in this ventilation system is performed by the impeller 11, the casing 12, and the materials constituting the partition plates 13, 22. Since there is no need to use a type sensible heat exchanger,
This ventilation device requires less manufacturing effort and is small and compact. In addition, it is an inexpensive ventilation device because it has a structure that allows air to be supplied into the room and exhausted to the outside at the same time using a single blower.

Moreover, if the electric motor 15 that drives the shaft 14 of the impeller 11 is used together as a drive source for rotating the casing 12 and is used at a reduced speed, only one electric motor is required.

In addition, if a mechanism is provided to stop only the drive device that rotates the casing 12, by stopping only the casing 12 and operating it, normal simultaneous supply and exhaust ventilation without heat exchange can be performed. The range will be wider.

Effect of the invention The present invention brings about the following effects.

(1) The complex structure of conventional rotary or plate sensible heat exchangers is no longer required, making the device smaller and cheaper.

(2) Since it does not use a heat exchanger with high pressure drop like conventional ones, there is less air resistance and noise.

(3) Simultaneous supply and exhaust ventilation can be performed with a single blower, resulting in an inexpensive ventilation system.

(4) If the electric motor that rotates the casing and the electric motor that rotates the impeller are used together, only one electric motor is required.

(5) By operating with only the rotation of the casing stopped, it can be used as a normal simultaneous supply/exhaust ventilation fan.

[Brief explanation of the drawing]

Fig. 1 is a schematic perspective view of a conventional rotary sensible heat exchanger, Fig. 2 is a schematic perspective view of a conventional plate type sensible heat exchanger, and Fig. 3 is a longitudinal section showing an embodiment of a ventilation system according to the present invention. The top view and FIGS. 4a and 4b are cross-sectional views taken along lines X-X and Y-Y in FIG. 3. 8, 9...Air flow path, 10...Blower, 11...
... Impeller, 12... Casing, 14... Rotating shaft of impeller, 15... Electric motor, 22... Partition plate.

Claims (1)

[Scope of Claims] 1. A partition plate made of a thermally conductive material is provided in two air flow paths communicating between the indoor side and the outdoor side so that the air flows in both air paths do not intersect, and a casing is provided. A blower equipped with a means for rotating is provided so as to span both air passages, and the casing is constructed such that the rotations of the air passages are shifted by 180° from each other about the rotation axis, and the impeller of the blower is and a ventilation system whose casing is made of non-hygroscopic and heat-storage material. 2. The ventilation device according to claim 1, wherein the drive source for the means for rotating the casing is a drive source for driving a blower. 3. The ventilation device according to claim 1 or 2, wherein the means for rotating the casing is provided with means for selectively stopping only the rotation thereof.