JP2004309072A - Heat exchanging ventilator and heat exchanger - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce a manufacturing cost by standardizing the constitution of a heat exchanging ventilator of large supply air volume and a heat exchanging ventilator of large exhaust air volume. <P>SOLUTION: In this heat exchanging ventilator, a supply air ventilation flue 4 and an exhaust air ventilation flue 6 are partitioned independently of each other over the whole line in a body casing 2, and a part of the exhaust air ventilation flue 6 and a part of the supply air ventilation flue 4 are formed of a primary passage and a secondary passage respectively in the body casing 2. Heat exchangers 1 for exchanging heat between fluid flowing in the primary passage and the secondary passage are built in, and the supply air ventilation flue 4 is provided with a supply air blower 3 for forming supply air flow, while the exhaust air ventilation flue 6 is provided with an exhaust air blower 5 forming exhaust air flow, to allow continuous heat exchange between the supply and exhaust air flows. The heat exchangers 1 are constituted to have the difference between the pressure loss of the primary passage and that of the secondary passage, and the primary passage and secondary passage of the heat exchangers 1 are reversed by changing the attached direction of the heat exchangers 1. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchange ventilator for performing ventilation by supply and exhaust while exchanging heat between supply and exhaust flows through a built-in heat exchanger, and a heat exchanger used for the heat exchange ventilator.
[0002]
[Prior art]
This type of heat exchange ventilator has a built-in heat exchanger that performs heat exchange between air and air, and performs ventilation by simultaneous supply and exhaust while performing heat exchange, and there is little variation in indoor state quantity. Ventilation can be provided. Among them, there is a case where the supply air volume is larger than the exhaust air volume for a room that is likely to be short of air supply and a case where the supply air volume is smaller than the exhaust air volume for a room where a negative pressure tendency is desired ( 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 in which the supply and exhaust air volumes are changed incorporates a heat exchanger in which the opening areas of the two fluid passages and the length of the fluid passages are changed. This heat exchanger is configured as a hexahedron whose projection plane is rectangular, and there is a difference in pressure loss between the two fluid passages.Depending on the mounting direction of the heat exchanger, the supply air volume is larger than the exhaust air volume. A large heat exchange ventilator and a heat exchange ventilator whose exhaust air volume is larger than the supply air volume are separately manufactured. In other words, even if two types of heat exchange ventilators have basically the same configuration, the heat exchanger part must be composed of separate parts due to the shape of the heat exchanger. Standardization of the equipment was difficult. It can be considered that the standardization can be achieved by rotating the frame fixing the heat exchanger and the heat exchanger by 90 degrees. However, since the frame is not square, if the frame is rotated by 90 degrees, it cannot fit in the main casing as it is. In order to be rotated by 90 degrees so as to fit, it is necessary to make the frame into a square having the long side of the flat rectangle as one side, and the main body casing must be enlarged.
[0005]
The present invention has been made in order to solve the above-mentioned conventional problems, and the object thereof is to standardize the configuration of a heat exchange ventilator having a large supply air volume and a heat exchange ventilator having a large exhaust air volume. And to reduce the manufacturing cost. Another issue is to develop a heat exchanger that can contribute to the standardization of a heat exchange ventilator with a large supply air volume and a heat exchange ventilator 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 exchange ventilator for continuously exchanging heat between an air supply and exhaust flow to ventilate the heat exchanger by providing a difference in pressure loss between a primary passage and a secondary passage. By adopting a configuration, means for changing the mounting direction of the heat exchanger to reverse the primary passage and the secondary passage of the heat exchanger is adopted.
[0007]
In order to achieve the above object, another invention provides a heat transfer square heat transfer plate laminated with a spacing member interposed therebetween, and a primary passage for passing a primary fluid and a secondary passage for passing a secondary fluid every other layer. For the heat exchangers that cross each other, a means is used to change the width of the spacing member that forms the primary passage and the secondary passage so as to have a difference in pressure loss between the primary passage and the secondary passage. .
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiment 1 FIG.
1 is a plan view of a heat exchange ventilator having 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. 3 is a plan view of a heat exchange ventilator having a large supply air volume according to the present embodiment. FIG. As shown in FIG. 1, the heat exchange ventilator is provided with a double-heat type heat exchanger 1 for performing heat exchange between air and air, which is incorporated in a main body casing 2 having a hexahedral box shape. The indoor 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 path of the dual heat exchanger 1, and an air supply ventilation path formed by the air supply blower 3 and passing an air supply flow from the outside to the room. 4 and a part of the path is constituted by each primary path of the double heat exchanger 1, and an exhaust ventilation path 6 formed by the exhaust blower 5 and passing an exhaust flow from the room to the outside is independent over the entire path. Is defined.
[0009]
The two heat exchangers 1 are arranged substantially at the center of the main 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, so that the pressure loss is different. 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 incorporated in the main body casing 2 in a double configuration. The layers of the heat exchanger 1 that perform heat exchange are vertically stacked, and are assembled in such a manner that the edges of the heat exchanger 1 abut each other, and the maintenance cover 8 provided on the lower surface of the main casing 2. If you remove it, you can insert and remove it vertically. As a result, the primary passage of each heat exchanger 1 through which the exhaust gas flows and the secondary passage through which the supply air flows intersect obliquely inside.
[0010]
By rotating the assembly direction by 180 degrees in the horizontal plane, the heat exchanger 1 reverses the primary passage and the secondary passage, the passage with the smaller pressure loss becomes the primary passage, and the one with the larger pressure loss becomes the secondary passage. If assembled so as to form a passage, the amount of exhaust air will be greater than the amount of supply air (see FIG. 1). On the other hand, if the primary passage and the secondary passage are inverted 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 respectively assembled on the left and right sides of the heat exchanger 1 of the main body casing 2. The suction port of the exhaust blower 5 is directed toward the heat exchanger 1, and the air outlet faces the exhaust air outlet 9 which is the outlet end of the exhaust air passage 6. The exhaust outlet 9 is provided on one surface of the peripheral side surface of the main body casing 2 and is configured to be duct-connectable. The suction port of the air supply blower 3 faces the outside air suction port 10 provided on one side surface of the main body casing, and the blow port faces the heat exchanger 1 side. An air supply outlet, which is an outlet end of the air supply passage 4, is provided on the lower surface of the main body casing 2 and faces the room through the decorative grill 11.
[0012]
On both sides of the lower surface of the main body casing 2 between the air supply blower 3 and the heat exchanger 1, exhaust suction ports, which are inlet ends of an exhaust ventilation passage 6, are provided, respectively, through a decorative grill 11 as shown in FIG. 2. The indoor air sucked from the exhaust inlet through the primary passage of each heat exchanger 1 is blown out from the exhaust blower 5 to the exhaust outlet 9 and then blown out of the room through the duct. The outdoor air sucked through the duct from the outside air inlet 10 is diverted from the air supply blower 3 to the secondary passage of each heat exchanger 1, exits each heat exchanger 1, and flows from the air supply outlet to the room. Be blown out. At the four corners near the top plate, hanging metal fittings 12 are provided on the main body casing 2, and the hanging metal fittings 12 are hung and fixed to the space above the ceiling with anchor bolts.
[0013]
As described above, the heat exchange ventilator of the present embodiment changes the manner of assembling the heat exchanger 1 by rotating the heat exchanger 180 by 180 degrees, so that the heat exchange ventilator whose supply air flow is larger than the exhaust air flow also supplies the exhaust air flow. It is also a heat exchange ventilator larger than the air volume. Since the two types of heat exchange ventilators have the same components and do not need to have a large body casing 2, 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 a motor output. When the exhaust blower 5 is in a weak operation, the supply air flow and the exhaust air flow are adjusted to be the same air flow. The blower 5 can be operated strongly to increase the amount of exhaust air.
[0014]
Embodiment 2 FIG.
The present embodiment shown in FIGS. 4 and 5 is the same as the heat exchange ventilator shown in the first embodiment, but is configured by a single heat exchanger having a difference in pressure loss between two passages. Except for this, the configuration is basically the same as that of the first embodiment except for the configuration related to the dust. Therefore, the same parts as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and the description thereof will be omitted.
[0015]
The heat exchange ventilator according to the present embodiment is configured such that the supply air flow rate is larger than the exhaust air flow rate by changing the mounting direction of one heat exchanger 11 having a rectangular projection plane by rotating it 90 degrees in a horizontal plane. Two types of exchange ventilation devices and heat exchange ventilation devices in which the exhaust air volume is larger than the supply air volume can be configured. However, the passage component 13 along the long side and the passage component 14 along the short side of the heat exchanger 1 cannot be shared by the two types of heat exchange ventilators, and separate components must be prepared. . This heat exchange ventilation device requires only one heat exchanger 1, and the entire device can be reduced in size.
[0016]
Embodiment 3 FIG.
This embodiment shown in FIG. 6 relates to a heat exchanger used for a heat exchange ventilator. In this heat exchanger 15, heat transfer square heat transfer plates 16 are stacked with a spacing member 17 interposed therebetween, and a primary passage for passing a primary fluid and a secondary passage for passing a secondary fluid intersect each other. It is configured as follows. The interval width of the interval holding member 17 forming the primary passage and the secondary passage is changed in size, so that the pressure loss between the primary passage and the secondary passage has a large difference.
[0017]
If this heat exchanger 15 is used, both the heat exchange ventilator having a larger supply air volume and the heat exchange ventilator having a larger exhaust air volume can use the same components using the same heat exchanger 15 to form the heat exchanger. By simply rotating the 15 mounting directions by 90 degrees and changing them, it can be easily made, and the configuration of the 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 a large supply air volume and the heat exchange ventilator with a large exhaust air volume can be standardized, and the manufacturing cost can be reduced.
[0019]
Further, according to another invention, a heat exchanger that can contribute to standardization of the configuration of the heat exchange ventilator having a large supply air volume and the heat exchange ventilator having a large exhaust air volume is obtained.
[Brief description of the drawings]
FIG. 1 is a plan view showing a heat exchange ventilation device having 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 according to the first embodiment having a large supply air volume.
FIG. 4 is a schematic plan view showing a heat exchange ventilator according to a second embodiment having a large supply air volume.
FIG. 5 is a schematic plan view illustrating a heat exchange ventilator according to a second embodiment having a large exhaust air volume.
FIG. 6 is a perspective view showing a heat exchanger according to a third embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Heat exchanger, 2 Main body casing, 3 Air supply blower, 4 Air supply ventilation path, 5 Exhaust air blower, 6 Exhaust air ventilation path, 15 Heat exchanger, 16 Heat transfer plate, 17 Space holding member. 7

Claims (5)

An air supply passage for taking in outdoor air into the room and an exhaust air passage for exhausting room air to the outside of the room are defined in the main body casing so as to be independent from each other over the entire path. In the casing, a part of the exhaust ventilation path and a part of the air supply ventilation path are respectively formed by a primary passage and a secondary passage, and heat exchange is performed to exchange heat between the fluids flowing through the primary passage and the secondary passage. The air supply passage is provided with a blower for forming an air supply flow from the inlet end to the outlet end of the air supply passage, and the exhaust air passage is provided from the inlet end to the outlet end of the exhaust air passage. A heat exchange ventilator provided with a blower for forming an outgoing exhaust flow and enabling continuous heat exchange between the supply and exhaust flows, wherein the heat exchanger has a difference in pressure loss between a primary passage and a secondary passage. And the mounting direction of this heat exchanger is changed. It, the heat exchange ventilator that primary passage and a secondary passage of the heat exchanger has to be reversed. 2. The heat exchange ventilator according to claim 1, wherein the heat exchange ventilator includes two heat exchangers that create a difference in pressure loss between the primary passage and the secondary passage based on the length of the passage. 3. 3. The heat exchange ventilator according to claim 2, wherein two heat exchangers of the same shape and the same size are formed in a double configuration at an angle of 90 degrees. The heat exchange ventilator according to claim 1, wherein a difference in pressure loss between the primary passage and the secondary passage of the heat exchanger is created by a difference in cross-sectional area of the passage. A heat exchanger in which heat transfer square heat transfer plates are laminated with a spacing member interposed therebetween, and a primary passage for passing a primary fluid and a secondary passage for passing a secondary fluid intersect every other layer, A heat exchanger in which the spacing between the spacing members that form the primary passage and the secondary passage is changed in size to provide a difference in pressure loss between the primary passage and the secondary passage.

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