JP2011247545A - Method for manufacturing heat exchanger, the heat exchanger, and carburetor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for manufacturing a heat exchanger, which contributes to the production of the heat exchanger capable of exerting efficient heat exchange characteristics with a good yield.SOLUTION: Piping 1, which has an internal channel 11 allowing a flow of a fluid serving as a heat exchange object and which can be wholly or partially deformed when undergoing an external force or in the case of the absence of a support, is housed in a storage portion 4S of a storage body 4 in the state of being supported by a supporting body 2 for preventing the deformation of the piping 1. A metal 6 for heat conduction, which transfers heat between a heat source and the piping 1, is formed by being cast in the storage portion 4S.

Description

  The present invention relates to a heat exchanger manufacturing method, a heat exchanger, and a vaporizer.

  Conventionally, heat exchangers that exchange heat between fluids, those that heat fluid with a heater, and those that cool a fluid with an electronic cooler are known. Further, a vaporizer as one aspect of a heat exchanger in which a liquid is heated using a heater to vaporize the liquid is used in many fields.

  Specifically, this type of vaporizer includes a stainless steel pipe that flows the liquid to be vaporized, a heater that heats the pipe, a temperature sensor that measures the temperature of the pipe, and the pipe, heater, and temperature sensor that are made of aluminum. And an aluminum block formed by casting in, and is configured to allow liquid to flow from one end of the pipe and vaporized gas to flow from the other end.

  The pipe is configured to draw a spiral, and the heater is arranged in a spiral formed by the pipe, so that the heat of the heater is directly transferred to the pipe through the aluminum so that the heater can efficiently Heating is realized (see Patent Document 1).

Japanese Patent Laid-Open No. 2002-090077

  However, in such a conventional configuration, for example, when aluminum is cast, the pipe is pushed by the cast aluminum, so that the position of the pipe may deviate from a predetermined arrangement position. As described above, when the piping position deviates from the predetermined arrangement position, it is almost impossible to correct the position, and there is a problem that the yield is deteriorated. In addition, since a part of the piping approaches or a part of the piping approaches the heater, uniform heat transfer cannot be performed, and as a result, the heating cannot be performed efficiently. is doing.

  Such a problem appears remarkably when the pipe is deformed in whole or in part when it receives an external force or has no support.

  The present invention has been made paying attention to such problems, and its main purpose is to produce a heat exchanger that contributes to the production of a heat exchanger that can exhibit a high yield and efficient heat exchange characteristics. It is to provide a method.

  That is, the method of manufacturing a heat exchanger according to the present invention includes a pipe that has an internal flow path for flowing a fluid to be heat exchanged and that can be deformed entirely or partially when receiving external force or without support. In the state where it is supported by the support for preventing the deformation, it is accommodated in the accommodating portion of the accommodating body, and a metal for heat conduction for transferring heat between the heat source and the pipe is cast into the accommodating portion. It is characterized by forming.

  According to such a structure, when a metal for heat conduction is cast, even if the pipe is pushed by the cast metal for heat conduction, the support body prevents deformation of the pipe. Therefore, it is possible to prevent a problem that the position of the pipe is deviated from a predetermined arrangement position. Accordingly, it is possible to improve the yield by preventing poor piping position, and to prevent a part of the pipes from approaching each other or a part of the pipes from approaching the heat source to achieve uniform transmission. Heat can be applied.

  That is, it is possible to provide a method of manufacturing a heat exchanger that contributes to the production of a heat exchanger capable of exhibiting a high yield and efficient heat exchange characteristics.

  As a desirable mode of the present invention, there is one in which the support includes a cast-in portion cast together with the pipe by the metal for heat conduction and a non-cast-in portion that is not cast.

  At this time, if the non-casting part can be separated from the non-casting part after casting, the pipe can be easily accommodated by holding the non-casting part when the pipe is housed. After that, the heat exchanger can be reduced in weight by separating (for example, cutting) the non-casting part from the casting part.

  As a desirable mode of the present invention, the non-casting part can be operated by hand or the like when the pipe is accommodated in the accommodating part.

  Here, “operable by hand” means using, for example, a machine tool that is operated using a jig in addition to a human direct operation such as placing a finger on a non-casting part to manipulate and move the non-casting part. This is a broad concept that includes the operation.

  As a desirable mode of the support body of the present invention, the support body has a pair of cast parts arranged opposite to each other and a non-cast part formed between the base end sides of these cast parts. A letter shape is mentioned.

  The pipe is a flexible pipe in which a large-diameter portion and a small-diameter portion are alternately and regularly repeated, and the support has an insertion holding portion that can insert and hold at least a part of the small-diameter portion. If it is, for example, compared with a straight pipe, since thickness can be made thin and surface area can be enlarged, a favorable heat conduction characteristic can be acquired. Further, since the large diameter portion and the small diameter portion cause turbulent flow in the fluid, it contributes to good heat conduction.

  If the pipe has a spiral structure, the pipe length can be sufficiently secured even when the volume of the accommodating portion is small, and for example, the liquid that is a liquid can be sufficiently vaporized.

  If the support has a plurality of holding portions that can respectively hold a plurality of different positions in a direction parallel to the spiral axis direction of the pipe, the position of the pipe generated by casting a metal for heat conduction Deviation can be effectively prevented. Moreover, since the piping can be held at a predetermined arrangement position by the holding portion, it contributes to the display of the desired heat transfer characteristics.

  As a desirable mode of the heat exchanger of the present invention, the heat exchanger has an internal flow path for flowing a fluid to be heat exchanged and is deformed in whole or in part when receiving external force or without support. And a support that supports the pipe while preventing the deformation, a heat source that transfers heat to the pipe, and a pipe that is supported by the heat source and the support. And a housing body that is fixed by casting the heat source and the pipe that are housed in the housing portion for assembly with a metal for heat conduction.

  If this is the case, when the metal for heat conduction is cast, even if the pipe is pushed by the cast metal for heat conduction, the support body prevents deformation of the pipe. Therefore, it is possible to prevent a problem that the position of the pipe is deviated from a predetermined arrangement position. Accordingly, it is possible to improve the yield by preventing poor piping position, and to prevent a part of the pipes from approaching each other or a part of the pipes from approaching the heat source to achieve uniform transmission. Heat can be applied.

  That is, it is possible to provide a heat exchanger that has a high yield and can exhibit efficient heat exchange characteristics.

  As a desirable mode of the vaporizer of the present invention, the vaporizer has an internal flow path for flowing the liquid to be vaporized, and can be entirely or partially deformed when receiving external force or without support. And a support for supporting the pipe while preventing the deformation, a heater for heating the pipe, and a housing portion for housing the heater and the pipe supported by the support. For this purpose, there may be mentioned a heater comprising the heater housed in the housing portion and a housing body fixed by casting the pipe with a metal for heat conduction.

  If this is the case, when the metal for heat conduction is cast, even if the pipe is pushed by the cast metal for heat conduction, the support body prevents deformation of the pipe. Therefore, it is possible to prevent a problem that the position of the pipe is deviated from a predetermined arrangement position. Therefore, it is possible to improve the yield by preventing poor piping arrangement positions, and to prevent a part of the pipes from approaching each other or a part of the pipes from approaching the heater to achieve uniform transmission. Heat can be applied.

  That is, it is possible to provide a vaporizer that can efficiently vaporize liquid with a high yield.

  As described above, in the method for manufacturing a heat exchanger according to the present invention, when a metal for heat conduction is cast, even if the pipe is pushed by the cast metal for heat conduction, the support is made of the pipe. In order to prevent the deformation, it is possible to prevent a problem that the position of the pipe is deviated from a predetermined arrangement position. Therefore, it is possible to improve the yield by preventing poor piping arrangement positions, and to prevent a part of the pipes from approaching each other or a part of the pipes from approaching the heater to achieve uniform transmission. Heat can be applied.

  That is, it is possible to provide a method of manufacturing a heat exchanger that contributes to the production of a heat exchanger capable of exhibiting a high yield and efficient heat exchange characteristics.

  The heat exchanger according to the present invention prevents the deformation of the pipe even when the pipe is pushed by the cast metal for heat conduction when the metal for heat conduction is cast. As a result, it is possible to prevent a problem that the position of the pipe is deviated from a predetermined arrangement position. Accordingly, it is possible to improve the yield by preventing poor piping position, and to prevent a part of the pipes from approaching each other or a part of the pipes from approaching the heat source to achieve uniform transmission. Heat can be applied.

  That is, it is possible to provide a heat exchanger that has a high yield and can exhibit efficient heat exchange characteristics.

  Further, the vaporizer of the present invention prevents the deformation of the pipe even when the pipe is pushed by the cast metal for heat conduction when the metal for heat conduction is cast. Thereby, the malfunction that the position of piping will shift from a predetermined arrangement position can be prevented. Therefore, it is possible to improve the yield by preventing poor piping arrangement positions, and to prevent a part of the pipes from approaching each other or a part of the pipes from approaching the heater to achieve uniform transmission. Heat can be applied.

  That is, it is possible to provide a vaporizer that can efficiently vaporize liquid with a high yield.

The structure sectional view of the vaporizer concerning one embodiment of the present invention. Sectional drawing of the structure of the vaporizer | carburetor in the embodiment. The structure sectional view of piping in the embodiment. The figure which shows the support body in the embodiment. The figure which shows the state which attached the piping and support body in the same embodiment. The structure sectional view of the container in the embodiment. The figure which shows the upper body which attached the piping and the support body in the same embodiment to the container.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  As shown in FIGS. 1, 2, 3, and the like, the vaporizer A according to the present embodiment is a pipe that allows a liquid to be vaporized to flow into the internal flow path 11 and flow out the gas vaporized in the internal flow path 11. 1, a support 2 that supports the pipe 1, a heater 3 that heats the pipe 1, and a storage portion 4 </ b> S for storing the heater 3 and the pipe 1 that is supported by the support 2. A housing 4, a temperature sensor 5 (not shown) for measuring the temperature of the pipe 1, a heat conducting metal 6 for transferring heat of the heater 3 to the pipe 1, and air outside the container 4. And an outer cover 7 (not shown) arranged through layers. Hereinafter, each part is demonstrated concretely.

  As shown in FIG. 3, the pipe 1 uses a flexible pipe in which a large-diameter portion 1X (about ¼ inch in diameter) and a small-diameter portion 1Y are alternately arranged in a regular and regular manner. Stainless steel having a spiral structure wound approximately several times at approximately 70 mm. In this embodiment, the thickness of the pipe 1 is 0.15 mm, and the pipe 1 is made of stainless steel having corrosion resistance to liquids. It is made of product. Since the pipe is a flexible pipe and the wall thickness is made thinner than that of the conventional straight pipe (1 mm), the pipe 1 is entirely exposed to external force or when the support 2 is not supported. Or a part can change easily.

  As shown in FIG. 4, the support 2 includes a pair of casting portions 21 a and 21 b (hereinafter collectively referred to as “casting portions 21”) cast together with the pipe 1 by a metal 6 for heat conduction, and a heat conducting metal. A substantially U-shaped thin plate having a non-casting portion 22 that is not cast by the metal 6 and is disposed between the base end sides of the casting portion 21, and in this embodiment, has corrosion resistance and It is made of stainless steel having a higher melting point than the metal 6 for heat conduction.

  Among these, a plurality of insertion holding portions 211 that can insert and hold a part of the small-diameter portion 1Y of the pipe 1 are provided at the respective outer edge portions of the casting portion 21. Here, the insertion holding part 211 is assumed to have a partial arc shape with a part thereof opened to the external space. The inner diameter 211a of the insertion holding part 211 is made to substantially coincide with the outer diameter of the small diameter part 1Y of the pipe 1. Further, among the plurality of insertion holding portions 211, adjacent insertion holding portions 211 are arranged so as to be separated by a predetermined pitch 211p.

  In addition, the non-casting part 22 is made to cut | disconnect the said non-casting part 22 from the casting part 21, after casting with the metal 6 for heat conduction. Therefore, the vaporizer A as a product has only the cast-in part 21 among the non-cast-in part 22 and the cast-in part 21 (see FIG. 1).

  The heater 3 is referred to as a sheath heater formed by folding a single heater 3 so as to reciprocate twice within the accommodating portion 4S of the accommodating body 4, as shown in FIGS. It is located in one spiral. In this embodiment, the heater 3 having a capacity of 1 kW is used, but can be appropriately changed according to the embodiment.

  As shown in FIGS. 1, 2, 6, and the like, the container 4 integrally includes a top wall 41 having a substantially rectangular shape and a side wall 42 bent substantially at right angles from the peripheral edges of the top wall 41. In addition, it is made of a metal having a substantially box shape including a bottom wall 43 that can open or close an accommodating portion 4S described later. Then, the housing 43 is opened by removing the bottom wall 43 from the side wall 42, and the pipe 1 and the like are housed in the housing 4S surrounded by the walls 41 and 42, and then the metal 6 for heat conduction is cast. Thus, the pipe 1 or the like can be fixed at a predetermined position. In the present embodiment, a heat insulating material 4D such as a polyimide foam is disposed along the inner periphery of each of the walls 41, 42, and 43.

  The temperature sensor 5 is disposed in the vicinity of the pipe 1 or in contact with the pipe 1, and particularly measures the temperature of the pipe 1 on the downstream side of the pipe 1, for example. The power supplied to the heater 3 is adjusted by a control circuit (not shown) so that the temperature measured by the temperature sensor 5 is equal to or lower than a predetermined temperature. Here, the amount of heat applied to the liquid by the heater 3 is adjusted by the control circuit to such an extent that the temperature does not cause a chemical reaction beyond vaporizing the liquid.

  The melted metal 6 is poured into the housing 4S of the housing 4 by pouring the molten metal, thereby casting and fixing the heater 3 and the pipe 1 supported by the support 2 in the housing 4S. It is what you do. In this embodiment, aluminum is used for the metal 6 for heat conduction, and it is melted at about 700 degrees and cast. As described above, by using aluminum as the metal 6 for heat conduction, the heat conductivity can be easily increased with light weight and low cost.

  A manufacturing method of the vaporizer A configured as described above will be described.

  First, the pipe 1 is supported on the support 2 using the insertion holding part 211 provided in the casting part 21.

  Then, since the support body 2 prevents a part of the pipes 1 from approaching or a part of the pipe 1 from approaching the heater 3, etc., the pipe 1 is desired while being supported by the support body 2. The spiral state can be taken (see FIG. 5).

  Next, the pipe 1 is accommodated in the accommodating portion 4 </ b> S of the accommodating body 4 while being supported by the support body 2. At this time, since the insertion holding portion 211 of the support 2 prevents the pipe 1 from falling off, the spiral structure of the pipe 1 is not broken by the inclination or vibration during the movement. Moreover, since it can have the non-casting part 22 of the support body 2, the piping 1 can be easily located in the predetermined position of the accommodating part 4S (refer FIG. 7).

  And the metal 6 for heat conduction is cast. Needless to say, the casting is performed with the top and bottom reversed from the state shown in FIG.

  The metal 6 for heat conduction which has been melted at about 700 degrees is poured into the accommodating portion 4S.

  Then, the pipe 1 receives a force caused by the poured hot metal flow of the metal 6 for heat conduction, but since the pipe 1 is held by the insertion holding portion 211, the pipe 1 does not fall off from the support body 2. Keep a spiral. For example, if the non-casting part 22 is fixed, the support body 2 will not move under the force of the hot metal flow of the metal 6 for heat conduction.

  Therefore, when casting with the metal 6 for heat conduction, the support 1, the pipe 1, the heater 3, and the temperature sensor 5 can be cast at desired positions. Moreover, even the spiral pipe 1 can be fixed with the metal 6 for heat conduction extremely easily and completely without a gap. Furthermore, the efficiency of heat transfer between the pipe 1 and the heater 3 can be made desired.

  After the casting is finished in this way, the non-casting part 22 is cut from the casting part 21, and the bottom wall 43 and the like are attached to complete the product (see FIG. 1).

  Therefore, according to the manufacturing method of the vaporizer A according to the present embodiment, when the metal 6 for heat conduction is cast, even if the pipe 1 is pushed by the cast metal 6 for heat conduction, Since the support body 2 prevents the deformation of the pipe 1, it is possible to prevent a problem that the position of the pipe 1 is shifted from a predetermined arrangement position. Therefore, it is possible to improve the yield by preventing the arrangement position of the pipe 1 from being lowered, and also preventing a part of the pipe 1 from approaching or a part of the pipe 1 from approaching the heater 3. Thus, uniform heat transfer can be performed.

  That is, it is possible to provide the vaporizer A that can efficiently vaporize the liquid with a high yield.

  In addition, since the non-casting part 22 can be cut from the non-casting part 22 after casting, while the pipe 1 is housed, the non-casting part 22 can be easily accommodated by holding it, After the housing, the non-casting part 22 can be cut from the casting part 21 to reduce the weight of the vaporizer A.

  Since the support 2 has a substantially U-shape having a pair of casting parts 21 arranged opposite to each other and a non-casting part 22 arranged between the base ends of these casting parts 21. , It can be handled easily.

  The pipe 1 is a flexible pipe in which the large-diameter portion 1X and the small-diameter portion 1Y are alternately and regularly repeated, and the support 2 can insert and hold at least a part of the small-diameter portion 1Y. Since the insertion holding portion 211 is provided, the thickness can be reduced and the surface area can be increased as compared with the straight pipe, so that a good heat conduction characteristic can be obtained. Moreover, since the large diameter part 1X and the small diameter part 1Y generate a turbulent flow in the fluid, it contributes to good heat conduction. And the position shift of the piping 1 which arises by casting of the metal 6 for heat conduction can be prevented effectively. Moreover, since the pipe 1 can be held at a predetermined arrangement position by the insertion holding portion 211, it contributes to the expected heat transfer characteristics.

  Since the pipe 1 has a spiral structure, even if the volume of the accommodating portion 4S is small, the length of the pipe 1 can be sufficiently secured, for example, the liquid that is a liquid can be sufficiently vaporized. .

  The present invention is not limited to the above embodiment.

  For example, in the above-described embodiment, the vaporizer A that heats and vaporizes the liquid by the heater 3 is illustrated as an example of the heat exchanger, but the present invention is also applicable to another heat exchanger that is not the vaporizer A. it can.

  Moreover, although aluminum is used for the metal 6 for heat conduction, it is not restricted to this, Silver, copper, gold | metal | money etc. which have higher heat conductivity can be used.

  Moreover, although the piping 1 is made into the spiral structure, it can be made into a suitable shape according to the embodiment, for example, to be a straight tube.

  Moreover, it does not prevent making the support body 2 whole into the casting part 21. FIG.

  Further, the structure of the support 2 is not limited to that of the present embodiment.

  In addition, the pipe 1 is not limited to a flexible pipe. For example, even if it is a straight pipe, it can be used for the heat exchanger as long as it can be deformed entirely or partially when it receives external force or has no support. Can do.

  In addition, the specific configuration of each part is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

A ... Heat exchanger (vaporizer)
DESCRIPTION OF SYMBOLS 1 ... Piping 1X ... Large diameter part 1Y ... Small diameter part 2 ... Support body 3 ... Heat source (heater)
4... Housing 4 S... Housing 6... Metal 11 for heat conduction... Internal channel 21... Casting part 22. ... Holding part (insertion holding part)

Claims (10)

  A pipe having an internal flow path for flowing a fluid to be heat exchanged and capable of being deformed entirely or partially when receiving external force or without support is supported by a support body for preventing the deformation. A heat exchanger manufacturing method comprising: forming a metal for heat conduction that is housed in a housing portion of the housing body in a state and that transfers heat between a heat source and piping into the housing portion.   The manufacture of a heat exchanger according to claim 1, wherein the support includes a cast-in portion cast together with the pipe by the metal for heat conduction, and a non-cast-in portion not cast. Method.   The method for manufacturing a heat exchanger according to claim 2, wherein the non-casting part is separated from the non-casting part after casting.   The method for manufacturing a heat exchanger according to claim 2 or 3, wherein the non-cast-in part is operable by hand or the like when the pipe is accommodated in the accommodating part.   The support body is substantially U-shaped and has a pair of casting parts arranged opposite to each other and a non-casting part arranged between the proximal ends of the casting parts. The manufacturing method of the heat exchanger in any one of Claims 2 thru | or 4. The pipe is a flexible pipe in which large-diameter portions and small-diameter portions are arranged alternately and regularly.
The method for manufacturing a heat exchanger according to any one of claims 1 to 5, wherein the support has an insertion holding portion that can insert and hold at least a part of the small diameter portion.   The method of manufacturing a heat exchanger according to claim 1, wherein the pipe has a spiral structure.   The method of manufacturing a heat exchanger according to claim 7, wherein the support includes a plurality of holding portions that can hold a plurality of different positions in a direction parallel to the spiral axis direction of the pipe. . A pipe having an internal flow path for flowing a fluid to be heat exchanged and capable of being deformed in whole or in part when external force is received or when there is no support;
A support that supports the piping while preventing the deformation;
A heat source for transferring heat to the pipe;
A housing part for housing the heat source and the pipe supported by the support body is provided, and the heat source and the pipe housed in the housing part for assembly are cast with a metal for heat conduction. A heat exchanger characterized by comprising a container to be fixed. A pipe having an internal flow path for flowing a liquid to be vaporized and capable of being deformed in whole or in part when receiving external force or without support;
A support that supports the piping while preventing the deformation;
A heater for heating the pipe;
A housing part for housing the heater and the pipe supported by the support is provided, and the heater and the pipe housed in the housing part are assembled with a metal for heat conduction for assembly. A vaporizer characterized by comprising a container to be fixed.