JP4391116B2 - Heat exchange ventilator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a heat exchange ventilator that performs ventilation by supply and exhaust while exchanging heat between supply and exhaust flows through a built-in heat exchanger, and a heat exchanger used in the heat exchange ventilator.
[0002]
[Prior art]
This type of heat exchange ventilator has a built-in heat exchanger that performs air-to-air heat exchange, and performs ventilation by simultaneous supply and exhaust while performing heat exchange. Ventilation can be performed. Among them, there are those that have increased the supply air volume from the exhaust air volume for rooms that are likely to be short of supply air, and those that have less air supply air volume than the exhaust air volume for rooms that want to have a negative pressure tendency ( For example, see Patent Document 1).
[0003]
[Patent Document 1]
JP-A-10-47724 (page 3, FIG. 1)
[0004]
[Problems to be solved by the invention]
The heat exchange ventilator that changes the air volume of supply air and exhaust air incorporates a heat exchanger that changes the opening area of the two fluid passages and the length of the fluid passage. This heat exchanger is composed of a hexahedron with a rectangular projection plane, and there is a difference in pressure loss between the two fluid passages. Depending on the heat exchanger assembly direction, the supply air volume is more than the exhaust air volume. A large heat exchanging ventilator and a heat exchanging ventilator where the exhaust air volume is larger than the supply air volume are individually made. In other words, even if two types of heat exchange ventilators with the same configuration are used, the heat exchanger part must be composed of separate parts because of the shape of the heat exchanger, Standardization of the equipment was difficult. It can be considered that standardization can be achieved by rotating the frame holding the heat exchanger and the heat exchanger 90 degrees. However, since the frame is not square, if it is rotated 90 degrees, it will not fit in the main casing. In order to be rotated 90 degrees to fit, it is necessary to make a frame in a square with the long side of the plane rectangle as one side, and the main body casing must be enlarged.
[0005]
The present invention has been made to solve the above-described conventional problems, and the problem is to standardize the configuration of a heat exchange ventilator with a large supply air volume and a heat exchange ventilator with a large exhaust air volume. It is to reduce the manufacturing cost. Another issue is the development of heat exchangers that can contribute to the standardization of heat exchange ventilators with a large supply air volume and heat exchange ventilators with a large exhaust air volume.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a heat exchanger ventilator for continuously exchanging heat between the supply and exhaust flows to ventilate the heat exchanger with a difference in pressure loss between the primary passage and the secondary passage. a duplicate configuration, by causing the assembling direction of the duplicate with each other to produce a heat exchanger is 180 ° vicissitudes, primary passage and a secondary passage of the heat exchanger is employed a method to ensure that reversed .
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
FIG. 1 is a plan view of a heat exchange ventilator with a large exhaust air volume according to the present embodiment, FIG. 2 is a view taken in the direction of arrow A in FIG. 1, and FIG. FIG. As shown in FIG. 1, this heat exchange ventilator has a built-in body casing 2 in which a double total heat heat exchanger 1 that performs air-to-air heat exchange is formed in a hexahedral box shape, Room ventilation is performed by simultaneous supply and exhaust while performing heat exchange. In this heat exchange ventilator, a part of the path is constituted by each secondary passage of the double heat exchanger 1, and an air supply ventilation path through which an air supply air flowing from the outside to the room is formed by the air supply blower 3. 4 and an exhaust ventilation path 6 through which a part of the path is constituted by each primary path of the duplex heat exchanger 1 and through which the exhaust flow from the room to the outside is formed by the exhaust blower 5 is independent over the entire path. Is defined.
[0009]
The two heat exchangers 1 are disposed at a substantially central portion of the main body casing 2. Each of the heat exchangers 1 is of the same shape and size and is a stacked type in which the planar shape is a rectangular hexahedron. One of the passages of each heat exchanger 1 has a larger cross-sectional area and a shorter length than the other, and has a difference in pressure loss. The two heat exchangers 1 having the same shape and the same size are assembled to the frame 7 at an angle of 90 degrees, and are assembled into the main casing 2 in a double configuration. The heat exchange layer of the heat exchanger 1 is in a state of being laminated in the vertical direction, and is assembled so that the ridges of each other face each other, and a maintenance cover 8 provided on the lower surface of the main casing 2. If it is removed, it can be inserted and removed in the vertical direction. As a result, the primary passage through which the exhaust flow of each heat exchanger 1 passes and the secondary passage through which the supply airflow passes are obliquely intersected inside.
[0010]
The heat exchanger 1 rotates the assembly direction 180 degrees in a horizontal plane, so that the primary passage and the secondary passage are reversed, the passage having the smaller pressure loss becomes the primary passage, and the passage having the larger pressure loss is the secondary passage. When assembled so as to form a passage, the exhaust air volume becomes larger than the supply air volume (see FIG. 1). On the other hand, if the primary passage and the secondary passage are reversed and assembled, the supply air volume becomes larger than the exhaust air volume (see FIG. 3).
[0011]
The air supply blower 3 and the exhaust blower 5 are assembled to the left and right of the heat exchanger 1 of the main body casing 2, respectively. The suction port of the exhaust blower 5 is directed to the heat exchanger 1 side, and the blower outlet faces the exhaust blower outlet 9 which is the outlet end of the exhaust ventilation path 6. The exhaust outlet 9 is provided on one surface of the peripheral side surface of the main casing 2 and is configured to be duct-connectable. The intake port of the air supply blower 3 faces the outside air intake port 10 provided on one side surface of the main body casing, and the air outlet is directed to the heat exchanger 1 side. An air supply outlet, which is an outlet end of the air supply ventilation path 4, is provided on the lower surface of the main casing 2 and faces the room through the decorative grill 11.
[0012]
Exhaust air inlets that are the inlet ends of the exhaust ventilation passages 6 are respectively provided on both sides of the lower surface of the main body casing 2 between the air supply blower 3 and the heat exchanger 1, as shown in FIG. The indoor air sucked in from the exhaust suction port is blown out from the exhaust blower 5 to the exhaust blowout port 9 through the primary passage of each heat exchanger 1 and blown out through the duct. The outdoor air sucked from the outside air inlet 10 through the duct is diverted from the air supply blower 3 to the secondary passage of each heat exchanger 1, exits each heat exchanger 1, and goes to the room from the air supply outlet. Blown out. The main casing 2 is provided with hanging brackets 12 at the four corners near the top plate, and the suspension bracket 12 is suspended and fixed to the space behind the ceiling by anchor bolts.
[0013]
As described above, the heat exchange ventilator according to the present embodiment changes the assembly method of the heat exchanger 1 by rotating it 180 degrees so that the exhaust air flow is supplied to the heat exchange ventilator where the air supply air flow is larger than the exhaust air flow. It also becomes a heat exchange ventilator that is larger than the air volume. Since the two types of heat exchange ventilators have the same components and the main casing 2 does not need to be enlarged, the configuration can be standardized and the manufacturing cost can be reduced. The exhaust blower 5 is provided with a switching means including a switch for switching the motor output, and when the exhaust blower 5 is operated weakly, the supply air amount and the exhaust air amount are adjusted so as to be the same. The blower 5 can be operated strongly to increase the exhaust air volume.
[0014]
Embodiment 2. FIG.
The present embodiment shown in FIG. 4 and FIG. 5 is configured by a single heat exchanger with a difference in pressure loss between two passages in the heat exchange ventilator shown in the first embodiment. Except for the configuration related to the stiffness, it is basically the same as that of the first embodiment. Therefore, the same parts as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment, and description thereof will be omitted.
[0015]
In the heat exchange ventilator of the present embodiment, the heat supply air amount is larger than the exhaust air amount by changing the assembly direction of one heat exchanger 1 whose projection plane shape is rectangular by rotating 90 degrees in the horizontal plane. Two types can be configured: an exchange ventilation device and a heat exchange ventilation device in which the exhaust air volume is greater than the supply air volume. However, the passage component 13 along the long side of the heat exchanger 1 and the passage component 14 along the short side cannot be shared for the two types of heat exchange ventilators, and it is necessary to prepare separate components. . This heat exchange ventilator requires only one heat exchanger 1, and the entire apparatus can be downsized.
[0016]
Embodiment 3 FIG.
This Embodiment shown by FIG. 6 is related with the heat exchanger used for a heat exchange ventilator. This heat exchanger 15 is formed by laminating square heat transfer plates 16 having heat transfer properties with a spacing member 17 in between, and a primary passage for passing the primary fluid and a secondary passage for passing the secondary fluid intersect each other. It is configured as follows. The interval width of the interval holding member 17 that forms the primary passage and the secondary passage is changed in size, and the pressure loss between the primary passage and the secondary passage is made larger or smaller.
[0017]
If this heat exchanger 15 is used, both a heat exchange ventilator with a larger supply air volume and a heat exchange ventilator with a larger exhaust air volume can be used with the same components using one heat exchanger 15. It can be easily made by simply rotating and changing 15 assembly directions by 90 degrees, and the configuration of two types of heat exchange ventilators can be standardized.
[0018]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the structure of the heat exchange ventilator with large supply air volume and the heat exchange ventilator with large exhaust air volume can be standardized, and the manufacturing cost can be reduced.
[0019]
Moreover, according to another invention, the heat exchanger which can contribute to standardization of the structure of the heat exchange ventilator with large supply air volume and the heat exchange ventilator with large exhaust air volume is obtained.
[Brief description of the drawings]
FIG. 1 is a plan view showing a heat exchange ventilator with a large exhaust air volume according to a first embodiment.
FIG. 2 is a view taken in the direction of arrow A in FIG.
FIG. 3 is a plan view showing the heat exchange ventilator with a large air supply amount according to the first embodiment.
FIG. 4 is a schematic plan view showing a heat exchange ventilator with a large air supply amount according to a second embodiment.
FIG. 5 is a schematic plan view showing a heat exchange ventilator with a large exhaust air volume according to a second embodiment.
6 is a perspective view showing a heat exchanger according to Embodiment 3. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Heat exchanger, 2 Main body casing, 3 Supply air blower, 4 Supply air ventilation path, 5 Exhaust air blower, 6 Exhaust ventilation path, 15 Heat exchanger, 16 Heat exchanger plate, 17 Spacing holding member. 7

Claims (3)

An air supply passage for taking outdoor air into the room and an exhaust air passage for exhausting indoor air to the outside are defined in a state independent from each other in the main body casing. A part of the exhaust ventilation path and a part of the air supply ventilation path are formed in the casing by a primary passage and a secondary passage, respectively, and heat exchange is performed between the fluid flowing through the primary passage and the secondary passage. The air supply passage is provided with a blower that forms a supply airflow from the inlet end to the outlet end of the supply air passage, and the exhaust ventilation passage is provided from the inlet end to the outlet end of the exhaust ventilation passage. A heat exchange ventilator provided with a blower that forms an exhaust flow toward it, and enables continuous heat exchange between the supply and exhaust flows,
The heat exchanger has a dual structure in which there is a difference in pressure loss between the primary passage and the secondary passage, and the assembly direction of the heat exchanger having the dual structure is changed by 180 ° to change the heat exchanger. A heat exchange ventilator that reverses the primary and secondary passages of the heat exchanger.   2. The heat exchange ventilator according to claim 1, wherein the heat exchange ventilator is constituted by a double heat exchanger in which a difference in pressure loss between the primary passage and the secondary passage is created by the length of the passage. 2. The heat exchange ventilator according to claim 1, wherein a square heat transfer plate having heat transfer properties is laminated with a spacing member interposed therebetween, and a primary passage for passing the primary fluid and a secondary passage for passing the secondary fluid are alternately provided. A heat exchanger in which the passages intersect,
A heat exchange ventilator configured by a heat exchanger in which the gap width of the gap holding member forming the primary passage and the secondary passage is changed to have a difference in pressure loss between the primary passage and the secondary passage. .

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