JP2013024553A - Heat exchanging device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat exchanging device capable of reducing noise.SOLUTION: The heat exchanging device includes a case body, a heat exchanger, and an air guiding component, wherein the heat exchanger is arranged in the case body, and has an angle alpha to a backing plate of the case body. The heat exchanger includes first and second collecting pipes, a plurality of flat pipes, and fins provided between adjacent flat pipes. Each flat pipe has both ends interconnected respectively to the first and second collecting pipes so as to make the first and second collecting pipe communicate with each other, the plurality of flat pipes are placed at intervals along the axis directions of the first and second collecting pipes, and the air guiding component operates to make an air stream entering an area between the heat exchanger and backing plate pass through the heat exchanger vertically and/or substantially vertically at at least a part of the area. By using the heat exchanging device, the air guiding component can make the air stream pass through heat exchanger from the lower part of the area between the heat exchanger and the backing plate vertically or approximate vertically, and thereby, the collision friction between the air stream and the fins of the heat exchanger can be reduced, and noise is reduced.

Description

  The present invention relates to the field of cooling technology, and more particularly to a heat exchange device.

  In the field of cooling technology, in recent years, plate heat exchangers such as micro-passage heat exchangers have been widely applied in cooling equipment, for example, air conditioners, and plate heat exchangers are usually used in air conditioners during use. The fan is usually located below the heat exchanger, and the airflow (ie, wind) is below the heat exchanger. Heat exchange is performed by passing through the heat exchanger from top to bottom. Noise is an important functional indicator of cooling equipment, such as air conditioners, and noise is one type of environmental pollution, so noise reduction is in the direction of reforming cooling equipment.

  The inventor of the present application has discovered that one cause of noise in cooling equipment, such as air conditioners, was that the airflow was generated by friction with the fins of the heat exchanger as it passed through the heat exchanger, and The inventor has found that the heat exchanger is installed in the cooling equipment, for example, the casing of the air conditioner, in a tilted or vertical manner, as a cause of the noise caused by the airflow passing through the heat exchanger, through simulated analysis and a large amount of experiments. There is a certain angle between the air flow direction and the heat exchanger surface. Usually, the formed angle is an acute angle or a zero degree angle, so that the air flow passes through the fin surface of the heat exchanger in a non-parallel manner. It was discovered that noise, that is, wind side noise was generated due to the violent impact friction of the fins. The inventors of the present application have also surprisingly discovered that the smaller the angle between the airflow and the heat exchanger surface, the greater the noise. Furthermore, the inventor of the present application has discovered that noise is mainly caused by collision and friction with the fins of the heat exchanger in the lower part of the region between the heat exchanger and the back plate of the housing.

  In view of the above problems, an object of the present invention is to provide a heat exchange device capable of reducing noise.

  A heat exchange device according to an embodiment of the present invention includes a housing, a heat exchanger, and a gas guide member, and the angle α between the heat exchanger is provided in the housing and the back plate of the housing. The heat exchanger includes first and second current collecting pipes, and both ends of the first and second current collecting pipes so that the first and second current collecting pipes communicate with each other. A plurality of flat tubes connected to each other and spaced along the axial direction of the first and second current collecting tubes, and fins provided between adjacent flat tubes, The gas guide member is used to allow airflow entering a region between the exchanger and the backplate to pass through the heat exchanger vertically and / or substantially vertically at least in a portion of the region.

  The heat exchange device according to an embodiment of the present invention allows the air flow to pass through the heat exchanger vertically and / or substantially vertically at least in a part of the region between the heat exchanger and the back plate via the gas guide member. Thus, collision friction between the airflow and the fins of the heat exchanger can be reduced, and noise can be reduced.

  In addition, the heat exchange apparatus according to the embodiment of the present invention may further include the following additional technical features.

  In one embodiment of the invention, the gas guiding member is used to pass the air flow through the heat exchanger vertically and / or substantially vertically at least in the lower part of the region.

  In one embodiment of the present invention, the gas guide member is located at a lower portion of the region.

  In one embodiment of the present invention, an angle α formed between the heat exchanger and the back plate of the housing is an acute angle or a zero degree angle.

  In one embodiment of the invention, the air flow enters the region along the direction from bottom to top.

  In one embodiment of the present invention, the gas guide member includes a gas guide plate, the gas guide plate is provided in the region between the heat exchanger and the back plate, and in the longitudinal direction of the heat exchanger. Stretch along.

  In one embodiment of the present invention, the gas guide plate is located at the lower part of the region and is fixed to the lower end of the heat exchanger.

  In one embodiment of the present invention, an angle θ formed between the gas guide plate and the heat exchanger is 20 ° ≦ θ ≦ 50 ° or 90 ° ≦ θ ≦ 120 °.

  In one embodiment of the present invention, the gas guide plate is provided with a through hole.

  In one embodiment of the present invention, there are a plurality of the gas guide plates, and the plurality of gas guide plates are provided in the region at intervals along the vertical direction.

  In one embodiment of the present invention, the gas guide plate is a flat plate or a circular arc plate.

  In one embodiment of the invention, the width of the gas guide plate is greater than 10 mm.

  In one embodiment of the present invention, at least a lower portion of the back plate has a curved shape extending in the vertical direction, and the gas guide member further includes the back plate.

  In one embodiment of the present invention, the curved shape is a ripple shape.

  In one embodiment of the present invention, the curved shape is composed of a plurality of arc-shaped line segments.

  In one embodiment of the present invention, at least a lower portion of the back plate has a curved shape extending along the vertical direction, and the gas guide member is formed of the back plate.

  In one embodiment of the present invention, the back plate has a curved shape at all altitudes along the vertical direction.

  Additional features and advantages of the invention will be set forth in part in the description that follows, and in part will be apparent from the description, or may be learned by practice of the invention.

The above-mentioned and / or additional points and advantages of the present invention will become apparent and easy to understand in the description of the embodiments based on the following drawings.
It is the schematic of the heat exchange apparatus by the 1st Example of this invention. FIG. 2 is a schematic view of a heat exchanger of the heat exchange device shown in FIG. It is the schematic of the heat exchange apparatus by the 2nd Example of this invention. It is the schematic of the heat exchange apparatus by the 3rd Example of this invention. It is the schematic of the heat exchange apparatus by the 4th Example of this invention. It is the schematic of the heat exchange apparatus by the 5th Example of this invention. It is the schematic of the heat exchange apparatus by the 6th Example of this invention. It is the schematic of the heat exchange apparatus by the 7th Example of this invention. It is the schematic of the heat exchange apparatus by the 8th Example of this invention. It is the schematic of the heat exchange apparatus by the 9th Example of this invention. It is the schematic of the heat exchange apparatus by 10th Example of this invention. It is the schematic of the conventional heat exchange apparatus.

  Reference will now be made in detail to embodiments of the present disclosure. Illustrative examples of said embodiments are shown in the drawings, wherein identical or similar elements and elements having identical or similar functions are denoted by like reference numerals throughout the specification. The embodiments described herein with reference to the drawings are illustrative and are not to be construed as limiting the disclosure, which is used to understand the disclosure.

  In the description of the present invention, terms used in reference to the orientation of a device or element, for example, “center”, “vertical”, “horizontal”, “top”, “bottom”, “front”, “back”, The orientation or positional relationship represented by terms such as "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" Positional relationship, only for convenience and simplicity of description of the present invention, that the device or element represented necessarily has a particular orientation, and is structured and operated with a particular orientation. It should not be understood as limiting the invention, as it should be understood that it is not pointing or implying. It should also be understood that the terms “first” and “second” are only for descriptive purposes and indicate more or less important or indicate the quantity of technical features indicated. Don't be. Thus, features defined as “first” and “second” can explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of “plurality” means two or more unless otherwise specified.

  In the description of the present invention, the terms “attachment”, “interconnection”, and “connection” should be understood in a wide range unless otherwise specified and limited. It may be a detachable connection, or an integral connection. It may be mechanical connection or electrical connection. Direct connection, connection via an intermediate medium, or communication inside two elements may be used. Those skilled in the art may understand the specific implications of the above terms in the present invention depending on the specific circumstances.

  In the following description, for the purpose of convenience, a heat exchange device used for an air conditioner will be described as an example. In this case, the “housing” of the heat exchange device is the case of the air conditioner. However, the heat exchange device according to the present invention is not limited to an air conditioner, and can be used for other cooling equipment. Correspondingly, the “housing” refers to the housing of other cooling equipment. Should be understood.

  FIG. 12 shows a schematic diagram of a conventional heat exchange device for an air conditioner. The heat exchange device includes a heat exchanger 100 ′ and a housing (that is, a housing of an air conditioner) 200 ′, and heat The exchanger 100 ′ is installed in an inclined manner in the housing 200 ′. In FIG. 12, the upper end of the heat exchanger 100 ′ leans against the back plate 201 ′ of the housing 200 ′. The blower F ′ is usually provided below a region between the heat exchanger 100 ′ and the back plate 201 ′, and blows an air flow (wind) A ′ upward into the region, and then the air flow A ′. Is passed through the heat exchanger 100 ′ to exchange heat with the coolant in the heat exchanger 100 ′.

  As shown in FIG. 12, the angle α formed between the heat exchanger 100 ′ and the back plate 201 ′ is equal to the angle β ′ formed between the heat exchanger 100 ′ and the air flow A ′.

  The inventor of the present application believes that one of the noises of the air conditioner is that there is no angle β ′ between the airflow A ′ and the heat exchanger 100 ′ when the airflow A ′ passes through the heat exchanger 100 ′. For this reason, it was discovered for the first time that it was caused by a violent collision friction between the airflow A ′ and the fins of the heat exchanger 100 ′ through the heat exchanger 100 ′ non-vertically. The inventor of the present application increases the noise as the angle β ′ formed is smaller, and further, the noise is mainly exchanged in the lower part of the region between the heat exchanger 100 ′ and the back plate 201 ′. It has been discovered that it is generated by impact friction with the fins of the vessel 100 ', ie noise is mainly generated in the lower part of the region between the heat exchanger 100' and the back plate 201 '.

  Based on the above findings, the inventor of the present application reduces the collision friction between the air flow and the fins of the heat exchanger of the heat exchange device by changing the flow direction and speed of the air flow, thereby reducing the generated noise. A heat exchange device was proposed.

  Next, a heat exchange apparatus according to an embodiment of the present invention will be described with reference to the drawings.

  As shown in FIG. 1, the heat exchange device according to the first embodiment of the present invention includes a housing 200 (shown schematically), a heat exchanger 100, and a gas guide member.

  The case 200 is the case of the air conditioner. It should be understood that the heat exchanger 100 is a plate-like parallel flow heat exchanger, such as a micropass heat exchanger, although the heat exchanger 100 is not limited thereto.

  The heat exchanger 100 is provided in the housing 200 and forms an angle α with the back plate 201 of the housing 200. Usually, the formed angle α is an acute angle. The formed angle α may be a zero degree angle, that is, the heat exchanger 100 is provided in the casing 200 in the vertical direction. Next, the case where the formed angle α is an acute angle will be described as an example.

  As shown in FIGS. 1 and 2, the heat exchanger 100 includes a first current collecting tube 1 and a second current collecting tube 2, a plurality of flat tubes 3, and fins 4. For example, the first current collecting pipe 1 can be an inlet current collecting pipe, and the second current collecting pipe 2 can be an outlet current collecting pipe. Both ends of each flat tube 3 are interconnected to the first current collecting tube 1 and the second current collecting tube 2, respectively, so that the first current collecting tube 1 and the second current collecting tube 2 communicate with each other. The flat tubes 3 are spaced along the axial direction of the first current collecting tube 1 and the second current collecting tube 2. Each fin 4 is provided between adjacent flat tubes 3.

  As shown in FIG. 2, as described above, for convenience of description, the axial direction of the first current collecting pipe 1 and the second current collecting pipe 2 is referred to as the longitudinal direction ZX (vertical direction) of the heat exchanger 100. The longitudinal direction of the flat tube 3 is defined as the width direction HX of the heat exchanger 100 (may be referred to as a lateral direction).

  The gas guide member allows the air flow A blown into the region G between the heat exchanger 100 and the back plate 201 to pass through the heat exchanger 100 vertically and / or substantially vertically in at least a part of the region G. It is.

  In the embodiment shown in FIG. 1, the blower F is provided below the heat exchanger and the housing 200, and the air flow enters the region G along the direction from the bottom to the top. However, it should be understood that the present invention is not limited to this, and the air blower F is provided above the heat exchanger 100 and the housing 200 and sucked up to move the air flow from the bottom to the top in the region G. In addition, the air current may enter the region G in an inclined manner or from the side.

  Note that the passage of the airflow A vertically and / or substantially vertically through the heat exchanger 100 means that the purpose and action of the installation of the gas guide member is to pass the airflow A through the heat exchanger 100 as vertically as possible. Point to. Needless to say, in practice, the entire airflow A does not pass through the heat exchanger 100 vertically, but a part of the airflow A passes through the heat exchanger 100 vertically, and the other airflow A passes through the gas guide member. It is understood that it passes through the heat exchanger 100 as close to the vertical as possible by the action, and the angle formed between the air flow A and the heat exchanger 100 in other parts may be the same or different. It's okay. As shown in FIG. 1, the angle β formed between the airflow A and the heat exchanger 100 (the angle β formed between the airflow A and the plane where the heat exchanger 100 is located) is 90 degrees (that is, the airflow A is heated vertically). May be 89 degrees, 85 degrees, 80 degrees, or the like, that is, if the air flow A can be passed through the heat exchanger 100 as vertically as possible by the gas guide member. Good. Therefore, a person skilled in the art refers to “substantially vertical” as “tends to be vertical” for the purpose of providing a gas guide member. It can be understood that it does not refer to passing.

  In other words, as shown in FIG. 1, the angle β formed by the airflow A and the heat exchanger 100 is increased as compared with the prior art, that is, “substantially vertical” is more than the angle α forming the angle β formed. Is to make it bigger.

  Further, the inventor of the present application mainly explains that the noise is mainly the airflow A in the lower part of the region G (for example, in the region near the lower end of the heat exchanger 100 in FIG. Yes, the specific size of the lower part of the region G is not limited, as long as the gas guide member can change the air flow direction in the region part and pass it through the heat exchanger 100 vertically or substantially vertically). It was surprisingly discovered that it was generated by collision friction with the fin 3 of the heat exchanger 100. Therefore, according to this embodiment of the present invention, if the air flow A can be passed through the heat exchanger 100 vertically or substantially vertically below the region G by the gas guide member, noise can be significantly reduced. Therefore, in some embodiments of the present invention, the gas guide member is preferably provided at least in the lower part of the region G.

  Therefore, according to the heat exchange device of the embodiment of the present invention, by providing the gas guide member, the air flow A can be passed through the heat exchanger 100 vertically or substantially vertically at least in a part of the region G. By changing the direction, the collision friction between the airflow A and the fins 3 of the heat exchanger 100 was reduced, the air flow velocity was lowered, and the noise was reduced. By providing the gas guide member, the direction of the air flow A is changed and the speed is reduced, and as described above, the air flow A passes through the heat exchanger 100 vertically or substantially vertically, that is, the fin 3 is arranged in parallel with the air flow A. As a result, the friction between the airflow A and the fins 3 was reduced to reduce noise.

  As described above, the noise is mainly generated due to the collision and friction of the airflow A with the fins 3 in the lower part of the region G. Therefore, in this embodiment of the present invention, as shown in FIG. By providing it at the bottom, noise could be significantly reduced. However, as described below, the gas guide member may be provided in the entire region G along the vertical direction.

  As shown in FIG. 1, in one specific example of the present invention, the gas guide member includes a gas guide plate 300. For example, the gas guide plate 300 may be a rectangular flat plate. However, the present invention is not limited to this as described below. A gas guide plate 300 is provided in a region G between the heat exchanger 100 and the back plate 201 and extends along the longitudinal direction ZX of the heat exchanger 100 (perpendicular to the paper surface direction in FIG. 1). The gas guide plate 300 can be provided in the vicinity of the lower end of the heat exchanger 100 (in the vicinity of the second collecting pipe 2), that is, in the lower part of the region G.

  According to this illustration of the present invention, the gas guide plate 300 allows the air flow A in the region G, preferably the lower part of the region G, to pass through the heat exchanger 100 vertically or substantially vertically. The frictional collision with 3 can be reduced and the noise can be reduced. The gas guide member in the form of the gas guide plate 300 is simple in structure, low in cost, and convenient to attach and detach.

  In the embodiment shown in FIG. 1, the angle θ formed between the gas guide plate 300 and the heat exchanger 100 is 20 ° ≦ θ ≦ 50 °. It has been surprisingly discovered that the noise reduction effect is optimal when the angle θ formed with the heat exchanger 100 is within the above range. In the case of the embodiment shown in FIG. 1, that is, when the back plate 201 is on the right side of the heat exchanger 100, the angle θ formed between the gas guide plate 300 and the heat exchanger 100 is the heat exchanger clockwise. It refers to the angle between 100 and the gas guide plate 300. Here, when the back plate 201 is on the left side of the heat exchanger 100, the angle θ formed between the gas guide plate 300 and the heat exchanger 100 is the counterclockwise direction from the heat exchanger 100 to the gas guide plate 300. It should be understood that it refers to the angle formed by.

  Also, as shown in FIG. 3, in the second embodiment of the present invention, the angle θ formed between the gas guide plate 300 and the heat exchanger 100 is 90 ° ≦ θ ≦ 120 °, and the inventors of the present application. Even if the angle θ formed between the gas guide plate 300 and the heat exchanger 100 is within the above range, the noise reduction effect is optimal, and noise is reduced when θ is within the range of 20 ° ≦ θ ≦ 50 °. It was discovered that it was equivalent to

  In some embodiments of the present invention, the gas guide plate 300 may be provided with a through hole so that a part of the airflow A can pass through the guide plate 300. Thereby, the collision between the airflow and the gas guide plate 300 can be reduced, the flow of the airflow can be improved, and the noise can be reduced.

  In the embodiment shown in FIGS. 1 and 3, the gas guide plate 300 is located in the lower part of the region. More specifically, in the third embodiment of the present invention, the gas guide plate 300 is fixed to the lower end of the heat exchanger 100 as shown in FIG. The gas guide plate 300 may be connected to a water receiving plate (not shown) below the heat exchanger 100, or may be connected to another support member in the air conditioner casing 200.

  In the first to third embodiments of the present invention shown in FIG. 1, FIG. 3 and FIG. 4, since the gas guide plate is provided in the lower part of the region G, noise is remarkably reduced. Preferably, in the fourth embodiment of the present invention, as shown in FIG. 5, there are a plurality of gas guide plates 300, and the plurality of gas guide plates 300 are provided in the region G at intervals along the vertical direction. Thereby, noise can be further reduced. In the embodiment shown in FIG. 5, the angles formed by the plurality of gas guide plates 300 and the heat exchanger 100 are the same, but the angles formed by them may be different.

  In the above embodiment, the gas guide plate 300 is a flat plate. In FIG. 6, a heat exchange device according to a fifth embodiment of the present invention is shown, and in this embodiment of the present invention, the gas guide plate 300 is arcuate. FIG. 7 shows a heat exchange apparatus according to a sixth embodiment of the present invention, in which the gas guide plate 300 has a crescent shape. However, it should be understood that the gas guide plate 300 may have other shapes. Also, it should be understood that the thickness of the gas guide plate 300 is non-uniform and the outer edge may be a cusp, circle or right angle.

  Moreover, when the gas guide member is the gas guide plate 300, the inventor of the present application can significantly reduce noise by making the width L (as shown in FIG. 1) of the gas guide plate 300 larger than 10 mm. , Unexpectedly discovered.

  FIG. 8 shows a heat exchange apparatus according to a seventh embodiment of the present invention. In this embodiment of the present invention, the gas guide member further includes a back plate 201 because at least the lower portion of the back plate 201 has a curved shape extending along the vertical direction. In other words, the back plate 201 and the gas guide plate 300 together constitute a gas guide member. As shown in FIG. 8, the middle part and the lower part of the back plate 201 have a rippled curve shape, and the ripples may consist of curved line segments or straight line segments. Therefore, noise can be reduced by allowing the airflow to pass through the heat exchanger 100 vertically or substantially vertically by the curved portion of the back plate 201. The back plate 201 may form a curved shape at all elevations in the vertical direction, thereby further reducing noise.

  FIG. 9 shows a heat exchange device according to an eighth embodiment of the present invention. In the embodiment shown in FIG. 9, the curved portion of the back plate 201 is composed of a plurality of arc-shaped line segments.

  Next, a heat exchange device according to a ninth embodiment of the present invention will be described with reference to FIG. In this embodiment of the present invention, at least the lower part of the back plate 201 has a curved shape extending in the vertical direction, more specifically, a rippled curved shape. Compared with the embodiment shown in FIGS. 8 and 9, in the embodiment shown in FIG. 10, the gas guide plate 300 is not provided between the heat exchange device 100 and the back plate 201, and the airflow is a curved back. In this embodiment of the present invention, the gas guide member consists only of the back plate 201 because it is guided by a part of the plate 201 and passes through the heat exchanger 100 vertically or substantially vertically. Preferably, the back plate 201 has a curved shape even at all altitudes along the vertical direction.

  FIG. 11 shows a heat exchange apparatus according to the tenth embodiment of the present invention. The difference between this embodiment and the embodiment shown in FIG. 10 is that the curved portion of the back plate 201 has a plurality of arc shapes. The others are the same as those in the embodiment shown in FIG. 10 and are not repeated here.

  According to the heat exchange apparatus of the embodiment of the present invention, by providing the gas guide member, the flow velocity of the airflow is changed to reduce the flow velocity, and the airflow is passed through the heat exchanger vertically or substantially vertically, The noise was reduced by reducing the collision friction with the fins of the heat exchanger. For example, when used in an air conditioner, the noise of the air conditioner can be suppressed and reduced, and comfort can be improved.

  In the description of the present specification, the description referring to the reference terms “one embodiment”, “some embodiments”, “exemplary”, “specific examples”, “partial examples”, etc. The specific features, structures, materials, or features described based on the examples or examples are included in at least one example or example of the present invention. In this specification, the general description of the terms does not necessarily refer to the same embodiment or example. In addition, the specific features, structures, materials, or features described can be combined in any suitable manner in any one or more of the examples or examples.

  While exemplary embodiments have been illustrated and described, it is contemplated that changes, substitutions, and modifications may be made to the embodiments within the scope of the claims and their equivalents without departing from the spirit and principles of the disclosure. It will be appreciated by those skilled in the art that the scope of the present invention is limited by the claims and their equivalents.

Claims (17)

A heat exchange device,
A housing, a heat exchanger, and a gas guide member;
The heat exchanger is provided in the casing, and an angle α is formed between the casing and the back plate of the casing. The heat exchanger includes first and second current collecting pipes, Both ends are interconnected with the first and second current collecting pipes so that the second current collecting pipe communicates with each other, and an interval is provided along the axial direction of the first and second current collecting pipes. A plurality of flat tubes and fins provided between adjacent flat tubes;
The gas guide member is used to allow airflow entering a region between the heat exchanger and the backplate to pass through the heat exchanger vertically and / or substantially vertically at least in a portion of the region. A heat exchange device characterized by that.   2. The heat exchange device according to claim 1, wherein the gas guide member is used to pass the air flow through the heat exchanger vertically and / or substantially vertically at least in a lower portion of the region.   The heat exchange apparatus according to claim 2, wherein the gas guide member is located in a lower portion of the region.   The heat exchanger according to any one of claims 1 to 3, wherein an angle α formed between the heat exchanger and the back plate of the housing is an acute angle or a zero degree angle.   The heat exchange device according to any one of claims 1 to 4, wherein the air stream enters the region along a direction from the bottom to the top.   The gas guide member includes a gas guide plate, and the gas guide plate is provided in the region between the heat exchanger and the back plate and extends along a longitudinal direction of the heat exchanger. The heat exchange device according to claim 1, wherein the heat exchange device is a heat exchanger.   The heat exchange apparatus according to claim 6, wherein the gas guide plate is located at a lower portion of the region and is fixed to a lower end of the heat exchanger.   8. The heat exchange device according to claim 6, wherein an angle θ formed by the gas guide plate and the heat exchanger is 20 ° ≦ θ ≦ 50 ° or 90 ° ≦ θ ≦ 120 °.   The heat exchange apparatus according to claim 6, wherein a through hole is provided in the gas guide plate.   The heat exchange according to any one of claims 6 to 9, wherein there are a plurality of the gas guide plates, and the plurality of gas guide plates are provided in the region at intervals along the vertical direction. apparatus.   The heat exchange apparatus according to any one of claims 6 to 10, wherein the gas guide plate is a flat plate or an arc-shaped plate.   The heat exchange apparatus according to any one of claims 6 to 11, wherein a width of the gas guide plate is larger than 10 mm.   The heat exchange according to any one of claims 6 to 12, wherein at least a lower portion of the back plate has a curved shape extending along a vertical direction, and the gas guide member further includes the back plate. apparatus.   The heat exchange apparatus according to claim 13, wherein the curved shape is a ripple shape.   The heat exchange apparatus according to claim 13, wherein the curved shape includes a plurality of arc-shaped line segments.   The heat exchange apparatus according to any one of claims 1 to 5, wherein at least a lower part of the back plate has a curved shape extending along a vertical direction, and the gas guide member includes the back plate.   The heat exchanging apparatus according to claim 16, wherein the back plate has a curved shape at all altitudes along the vertical direction.

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