JP2009168312A - Seal structure for heat exchanger - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seal structure for a heat exchanger capable of ultimately realizing a desirable seal state via a packing by preventing a defect of the precedently adhered packing during operation of positioning the heat exchanger in a predetermined position, when carrying out sealing of the heat exchanger equipped with a tank part and precedently connected to induction and delivery pipes of a heat exchange medium by using the packing with respect to a duct. <P>SOLUTION: After moving the heat exchanger 1 precedently connected to the induction and delivery pipes 9, 10 of the heat exchange medium with respect to the tank part in a first direction 11 along one face of the duct 3, by moving it in a second direction orthogonal to the first direction 11 and heading inward of the duct 3, it is arranged in the predetermined position in the duct 3. During this, a gap between the duct 3 inner face and the tank part of the heat exchanger 1 is sealed by interposing packings 14, 16 precedently adhered to a periphery of the tank part in compressed states in the predetermined position. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a structure for sealing a heat exchanger having a tank portion to which a heat exchange medium introduction / extraction pipe is connected in advance by using a packing, and in particular, the heat exchanger is inserted into a predetermined position of a duct forming an air passage, The present invention relates to a seal structure of a heat exchanger that is forced to be inserted in two directions due to the presence of a pipe that is connected in advance.

  For example, a heat exchanger such as a heater core disposed in an air duct of a vehicle air conditioner is placed at a predetermined position in the duct so that a part of the circulating air in the duct can surely pass through the heat exchanger core part of the heater core. It is desired that the tank portion and the like be arranged in a state of being well sealed via the packing (for example, Patent Document 1). In order to ensure good installation workability, such a heater core is inserted into a hole opened on the side of the duct or the like with a heat exchange medium introduction / extraction pipe connected to the tank portion in advance. It is often set at a predetermined position via an insertion operation. Regardless of whether or not the above-mentioned pipes are connected in advance, the seal packing is usually stuck first to the necessary part of the heat exchanger and the heat exchanger is inserted in that state.

However, when the heat exchanger is inserted and arranged into a predetermined site through the opening hole of the duct with the introduction / extraction pipe of the heat exchange medium connected in advance as described above, the introduction / extraction pipe is connected to the outer surface of the duct itself or In order to avoid interference with equipment installed on the outer surface of the duct, first, the heat exchanger is installed in a direction (first direction) at a position relatively separated from the outer surface of the duct. Move and insert the heat exchanger in the second direction perpendicular to the first direction and toward the inside of the duct so that the heat exchanger fits in the predetermined position in the duct after being moved by a predetermined amount You may be forced to do it. In this way, by setting in two directions of movement and insertion, it is avoided that the introduction / extraction pipe interferes with other members during these operations, and the heat exchanger is finally arranged at a predetermined position in the duct. Then, the introduction / extraction pipe is also arranged at a predetermined position with respect to the duct.
Japanese Patent Laid-Open No. 11-192832

  However, when the movement and insertion operations in the two directions as described above are required, the packing previously attached to the heat exchanger, in particular, the tank portion, is opened in the duct in the second direction. When it is inserted through the hole, it may be caught at the edge of the duct part forming the opening hole, etc., and may be displaced from a predetermined sticking position or peeled off. If such packing slippage or peeling occurs, even if the heat exchanger is disposed at a predetermined position in the duct, a preferable sealing state cannot be expected.

  Accordingly, an object of the present invention is to seal a heat exchanger, which has a tank portion and a heat exchange medium introduction / extraction pipe, is connected to a duct using a packing, in order to place the heat exchanger in a predetermined position. It is an object of the present invention to provide a heat exchanger sealing structure in which a defect is not generated in the packing that has been adhered in advance during operation, and a desired sealing state can be finally realized via the packing.

  In order to solve the above-described problems, the heat exchanger seal structure according to the present invention includes a substantially rectangular heat exchanger core portion that performs heat exchange between external circulation air and a heat exchange medium that is circulated therein. A heat exchanger having a tank portion at an end and a heat exchange medium introduction / extraction pipe connected to the tank portion in advance in a first direction along one surface of the duct with respect to the duct forming the air passage. After being moved, the inner surface of the duct and the tank portion of the heat exchanger are disposed when being arranged at a predetermined position in the duct by moving in a second direction perpendicular to the first direction and inward of the duct. Is a heat exchanger sealing structure in which a gasket previously attached around the tank portion is compressed and interposed at the predetermined position, and heat exchange is performed in the second direction. As a guide wall when moving the container to the predetermined position The inner wall surface of the duct to be extended at least to a direction switching unit that switches the moving direction of the heat exchanger from the first direction to the second direction, and the heat exchanger of the extended inner wall surface in the direction switching unit The relative position is set at a position where the packing previously stuck around the tank portion can be compressed.

  In such a sealing structure, when the heat exchanger is arranged at a predetermined position in the duct, the heat exchanger is arranged in the first direction and the second direction because the heat exchange medium introduction / extraction pipe is connected in advance. The inner wall surface of the duct functioning as a guide wall of the heat exchanger when moving in the second direction is moved from the first direction to the second direction. Is extended to the direction switching section that switches to the direction of the direction, so when the movement direction of the heat exchanger is switched from the first direction to the second direction and starts moving in the second direction, it is attached in advance. The packing that had been stuck does not get caught in the duct part located at the movement start end in the second direction, and the heat exchanger with the packing attached will be smoothly guided to a predetermined position in the duct, The packing attached to the heat exchanger Along the inner wall surface of the duct which serves as a guide wall during movement in the second direction, without problems will be caused, such as displacement or peeling will be smoothly guided. And since the relative position of the extension inner wall surface in this direction switching part with respect to the heat exchanger is set to a position where the packing attached in advance around the tank part can be compressed, the packing is within the extension. When guided in the second direction along the wall surface, the compressed state is maintained, and the compressed state is set at a predetermined position in the duct. Therefore, when the heat exchanger is completely arranged at a predetermined position in the duct, the packing attached around the tank portion is also arranged in a desired compressed state at the position, and a predetermined seal is provided at this portion. It will automatically be set to the most desirable state for performance. That is, even when the movement operation of the heat exchanger in two directions is unavoidable, it is possible to prevent a failure from occurring in the packing that has been adhered in advance during the operation, and the final heat exchanger. The desired set state of the packing at the set position is automatically ensured, and the target heat exchanger sealing structure is easily and reliably realized.

  In such a heat exchanger sealing structure according to the present invention, in particular, the extended inner wall surface in the direction switching portion has at least two inner wall surfaces facing each other, and the distance between the inner wall surfaces is the above-described distance. The structure set to the distance which can compress the packing stuck around the tank part is employable. In such a configuration, since the packing is clamped by both the extended inner wall surfaces, a desired compression amount can be easily given to the packing. By being guided in the second direction while being maintained in the compressed state, the packing is more reliably set in a desired state.

  In addition, if the extended inner wall surface in the direction switching unit extends from the direction switching unit to the inner wall surface of the duct at the predetermined position in substantially the same form, the packing compressed in the direction switching unit is used. Will be guided in the second direction along the extended inner wall surface while being reliably maintained in the compressed state, and will be set more reliably in the desired state at the final set position.

  Further, in the heat exchanger seal structure according to the present invention, the packing that has been stuck around the tank portion in advance is arranged at the edge of the packing at the position of the upper end surface or the lower end surface of the heat exchanger around the tank portion. And a butt portion of the packing extends along the substantially rectangular heat exchanger core portion on the upper end surface or the lower end surface of the heat exchanger (that is, along the second direction). It is also possible to adopt a configuration that is covered with another packing that is affixed (to extend). When packing is applied in advance around the tank part, especially around the entire circumference, a structure in which the abutting part between the edges of the packing occurs is often adopted, but the abutting part of this packing is a heat exchanger. When moving in the second direction, it is considered that it is likely to become a peeling end. However, in the configuration as described above, the butted portion of the packing is covered with another packing that is attached so as to extend in the second direction, and therefore the first and second packings can be smoothly passed through the other packing. It will be guided to the direction of 2, and it will be surely avoided that a butting part becomes a peeling end. In addition, the end of the packing is not abutted but the end of the packing is overlapped, but the packing is unnecessarily raised at the overlap, so the desired sealing performance can be obtained. It becomes difficult to be.

  The application place of the heat exchanger seal structure according to the present invention is not particularly limited, but is suitable when the duct is a duct used in a vehicle air conditioner. In particular, it is particularly suitable when an insertion operation into the duct is required and a high sealing performance in the duct after insertion is required, for example, when the heat exchanger is composed of a heater core.

  The seal structure of the heat exchanger according to the present invention is, for example, a so-called parallel flow type in which the heat exchanger has tank portions on the left and right sides, and a plurality of heat exchange tubes are provided between both tank portions. It can be applied to the case where the seal structure by the packing is configured for at least one tank portion. Of course, the present invention can also be applied to both the left and right tank parts. Furthermore, for a heat exchanger of a type having only one tank part, the heat exchanger according to the present invention is applied to the tank part. It is possible to apply the seal structure.

  According to the seal structure of the heat exchanger according to the present invention, a heat exchanger having a tank portion and having a heat exchange medium introduction / extraction pipe connected thereto in advance is inserted and arranged at a predetermined position in the duct and sealed using packing. At this time, the packing previously stuck around the tank portion can be moved to a final predetermined position in a desired state, and a desired heat exchanger seal structure can be reliably realized at that position.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
1 and 2 show a seal structure of a heat exchanger according to an embodiment of the present invention, and the present invention is arranged with a heater core as a heat exchanger in a duct used for a vehicle air conditioner, The case where it applies to seal the required part of one tank part of a heater core especially with respect to this duct is shown. As shown in FIG. 1, the heater core 1 as a heat exchanger is disposed at a predetermined position in a duct 3 that forms an air passage 2. As shown in FIG. 2, the heater core 1 is generally rectangular as a whole, has left and right tank parts 4, 5, and a heat exchanger core part 6 therebetween, and a plurality of heat exchange tubes between both tank parts 4, 5. 7, and a so-called parallel flow type heat exchanger in which corrugated fins 8 are provided between adjacent heat exchange tubes 7. One tank section 4 is connected in advance with heat exchange media (for example, hot water or engine cooling water) introduction pipes 9 and 10, and a part of the circulating air (arrow) in the duct 3 flowing through the air passage 2. Heat exchange is performed between (the air excluding the bypass flow) and the heat exchange medium circulated in the heat exchanger core 6. In this embodiment, the seal structure according to the present invention is applied to the one tank portion 4. In this embodiment, the heat exchange medium introduction / extraction pipes 9, 10 are connected to the tank portion 4, and the heater core 1 is connected to the duct 3 with the introduction / extraction pipes 9, 10 being connected. It is moved to a predetermined position A (shown in FIG. 1).

  In this embodiment, this movement is first performed in the first direction 11 directed downward in FIG. 1, and after moving a predetermined distance in the first direction 11, the movement of the duct 3 is orthogonal to the first direction 11. The heater core 1 reaches a predetermined position A in the duct 3 and is set at the position A by being moved in the inward direction (direction perpendicular to the paper surface of FIG. 1), that is, in the second direction 12 shown in FIG. Is done. In order to enable the heater core 1 to move in these two directions with respect to the duct 3, in this embodiment, the duct 3 is configured to be divided at an appropriate position in the vertical direction in FIG. After moving in the first direction 11 with the side duct part opened, the upper side duct part is closed, and the heater core 1 is located in a predetermined position in the duct 3 along the opening 13 of the duct 3 formed. A is inserted up to A. Therefore, the inner wall surface of the opening 13, in particular, in this embodiment, the left and right inner wall surfaces 13 a of FIG. 1 facing each other are inserted and moved to the predetermined position A in the duct 3. It functions as a guide wall.

  Around the tank portion 4, a band-like packing 14 is attached in advance so as to extend over the entire circumference of the tank portion 4. The packing 14 has a butting portion 15 between the edges of the packing 14 at the lower end surface position in FIG. 1 of the heater core 1 around the tank portion 4. The abutting portion 15 is covered with an end portion of another packing 16 attached so as to extend along the heat exchanger core portion 6. In this embodiment, the other packing 16 extends along the upper end surface of the heat exchanger core portion 6 and then extends along one side surface of the heater core 1 as shown in FIG. After extending along the lower end surface of the vessel core portion 6, as described above, the container core portion 6 is disposed so as to cover the butted portion 15 of the packing 14.

  As described above, the inner wall surface of the duct functioning as a guide wall when the heater core 1 is moved to the predetermined position A in the second direction 12, in this embodiment, the left and right inner wall surfaces 13 a in the opening 13 of the duct 3 are at least The heater core 1 is extended to a direction switching section that switches the moving direction of the heater core 1 from the first direction 11 to the second direction 12, and the left and right inner wall surfaces 13a formed on the extended inner wall surface of the direction switching section with respect to the heater core 1 The relative position is set to a position where the packing 14 that has been pasted around the tank portion 4 can be compressed. More specifically, as shown in FIG. 1, the distance d between the left and right inner wall surfaces 13 a facing each other is set to a distance capable of compressing the packing 14 attached around the tank portion 4 in advance. Yes.

  In the seal structure for the heater core 1 configured as described above, the heater core 1 to which the inlet / outlet pipes 9 and 10 are connected in advance is sequentially moved in two directions of the first direction 11 and the second direction 12. When arranged at the predetermined position A, the packing 14 that is attached in advance around the tank portion 4 is extended to a direction switching portion that switches the moving direction of the heater core 1 from the first direction 11 to the second direction 12. The left and right inner wall surfaces 13a in the opening 13 of the duct 3 are restrained in a compressed state, and in the compressed state, along the left and right inner wall surfaces 13a functioning as guide walls when moving in the second direction 12, Guided to a predetermined position A. Since the guide remains restrained in the compressed state, it is possible to avoid the occurrence of problems such as displacement and peeling in the packing 14, and the guide is smoothly guided to the final arrangement position in a desirable sticking state. In addition, by appropriately setting the distance d between the inner wall surfaces 13a, the compression amount of the packing 14 can also be set appropriately, thereby realizing a smooth movement and a desirable sealed state after the movement more reliably. Therefore, when the heater core 1 is completely disposed at the predetermined position A in the duct 3, the packing 14 attached around the tank portion 4 is also disposed in the desired compressed state at that position. The optimum seal state for exhibiting the predetermined seal performance that is the target in A will automatically appear.

  Further, since the abutting portion 15 of the packing 14 that is considered to be easily peeled off during the movement is covered with another packing 16, the abutting portion 15 is also prevented from being peeled off. In particular, the other packing 16 is attached so as to extend along the heat exchanger core portion 6, and the packing extending direction coincides with the second direction 12, so that the insertion in the second direction 12 is performed. At this time, there is no fear that the other packing 16 itself will be defective, and the effect of preventing the peeling due to the butting portion 15 of the packing 14 is reliably exhibited.

  The seal structure of the heat exchanger according to the present invention can be applied to all uses for sealing a heat exchanger having a tank portion and a heat exchange medium introduction / extraction pipe connected to a duct using a packing. In particular, it is suitable for use in a heat exchanger, particularly a heater core, disposed in an air duct of a vehicle air conditioner.

It is a schematic side view of the seal structure of the heat exchanger which concerns on one embodiment of this invention. It is the schematic front view seen from the direction orthogonal to FIG. 1 of the seal structure of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Heater core as a heat exchanger 2 Air passage 3 Duct 4, 5 Tank part 6 Heat exchanger core part 7 Heat exchange tube 8 Corrugated fin 9 Derived pipe 10 Introducing pipe 11 First direction 12 Second direction 13 Opening 13a Inner wall surfaces 14 on the left and right sides of the opening portion Packing 15 Butting portion 16 Another packing A Predetermined position

Claims (7)

  A tank portion is provided at the end of a substantially rectangular heat exchanger core portion for exchanging heat between the external circulation air and the heat exchange medium circulated therein, and a heat exchange medium introduction / extraction pipe for the tank portion Is moved in a first direction along one surface of the duct with respect to the duct forming the air passage, and then directed inward of the duct perpendicular to the first direction. By moving in the second direction, when the gasket is disposed at a predetermined position in the duct, the packing that has been adhered around the tank portion in advance between the inner surface of the duct and the tank portion of the heat exchanger is placed in the predetermined direction. A heat exchanger sealing structure for sealing by interposing in a compressed state at a position, wherein an inner wall surface of a duct functioning as a guide wall when moving the heat exchanger to the predetermined position in the second direction At least the direction of movement of the heat exchanger The gasket is attached to the periphery of the tank portion in advance with the relative position of the extended inner wall surface of the direction switching portion with respect to the heat exchanger extending from the direction to the direction switching portion that switches to the second direction. A heat exchanger seal structure characterized by being set at a compressible position.   The extended inner wall surface in the direction switching portion has at least two inner wall surfaces facing each other, and the distance between both inner wall surfaces is set to a distance that allows compression of the packing that has been pasted around the tank portion in advance. The heat exchanger seal structure according to claim 1, wherein:   The heat exchanger seal according to claim 1 or 2, wherein an extended inner wall surface in the direction switching portion extends substantially in the same form from the direction switching portion to the inner wall surface of the duct at the predetermined position. Construction.   The packing that has been pasted around the tank portion in advance has a butting portion between the edges of the packing at the upper end surface or lower end surface position of the heat exchanger around the tank portion, and the butting portion of the packing is The heat exchanger according to any one of claims 1 to 3, wherein the heat exchanger is covered with another packing attached to the upper end surface or the lower end surface so as to extend along the substantially rectangular heat exchanger core portion. Seal structure of heat exchanger.   The seal structure for a heat exchanger according to any one of claims 1 to 4, wherein the duct is a duct used in a vehicle air conditioner.   The heat exchanger seal structure according to any one of claims 1 to 5, wherein the heat exchanger comprises a heater core.   The heat exchanger comprises a parallel flow type heat exchanger having a tank part on each of the left and right sides, and a plurality of heat exchange tubes provided between both tank parts, and the seal structure by the packing has at least one tank part. The heat exchanger seal structure according to any one of claims 1 to 6, wherein

Images