CN1595019A

CN1595019A - Heat exchanger

Info

Publication number: CN1595019A
Application number: CN 200410079145
Authority: CN
Inventors: 和田贤一; 坂本武则; 细谷和树
Original assignee: Sanden Corp
Current assignee: Sanden Corp
Priority date: 2003-09-11
Filing date: 2004-09-10
Publication date: 2005-03-16
Anticipated expiration: 2024-09-10
Also published as: DE102004043903A1; FR2865026B1; JP2005083719A; CN100408944C; JP4188784B2; FR2865026A1

Abstract

Provided is a header pipe section structure in a heat exchanger for performing the offset arrangement of a header pipe and preventing a decrease in the pressure resistance performance of the header pipe. In the parallel flow type heat exchanger, at least one header pipe is arranged while a position at the center of the cross section is offset to one side in the thickness direction of the heat exchanger to the position of the center in the thickness direction of the heat exchanger, an outer surface at a part in which the heat exchange tube of the header pipe is connected is formed on a flat surface A, and the inner cross section shape is formed circularly.

Description

A kind of heat exchanger

Technical field

The present invention relates to a kind of heat exchanger, particularly, relate to a kind of so-called parallel flow heat exchanger, wherein transfer pipes is arranged between a pair of house steward parallel to each other, more specifically, relate to total tubular construction of heat exchanger, wherein heat exchanger is suitable as the condenser of vehicle air conditioner, especially crosses the cold mould condenser.

Background technology

Known so-called parallel flow heat exchanger, wherein transfer pipes is arranged between two house stewards parallel to each other.In this heat exchanger, a kind of situation is that at least one house steward requires to have bigger capacity, and another kind of situation requires the width (width of transfer pipes be thickness direction at heat exchanger) of house steward's sectional area greater than the transfer pipes that respectively extends in parallel.For example, the condenser of vehicle air conditioner specifically was in the cold mould condenser, and the sectional area that requires a house steward is greater than another house steward's sectional area and require to have the fluid storage function.

This cold mould structure of condenser excessively as shown in Figure 1.Basic structure shown in Figure 1 is common to the basic structure of introducing later of the present invention.In Fig. 1, heat exchanger 1 comprises a pair of house steward 2 and 3, and a plurality of plane transfer pipes 4 are connected with 3 with two house stewards 2, and extend in parallel between house steward 2,3, and undaform fin 5 is arranged between adjacent transfer pipes 4 and the outermost portion.The inlet 6 and the outlet 7 of cold-producing medium are arranged on the house steward 2, and dividing plate 8 is arranged on the house steward 2.Other house steward 3, be provided with liquid storage function and dehumidification function.Accommodate this house steward 3, as unit 11, its top is provided with the drying unit 9 of possessing the dry bag that drives off moisture, and the bottom is provided with the filter 10 of removing exterior material.Unit 11 remains on house steward 3 removedly by holding plate 12, and holding plate 12 has the circulation part in the center.In the whole core 13 of heat exchanger 1, the part on the position of dividing plate 8 forms condensation of refrigerant core 14, and the part under the position of dividing plate 8 formed cold core portion 15, was used to make cooled dose of condensation core 14 condensed refrigerant cold excessively.In such heat exchanger with core separated from each other 14 and 15 1, flow through and in 14 condensations of condensation of refrigerant core from 6 the cold-producing mediums of introducing house stewards 2 that enter the mouth on dividing plate 8 tops, moisture and exterior material in inflow house steward's 3 the cold-producing medium are eliminated, the bottom that the cold-producing medium of liquefaction temporarily leaves house steward 3 in (particularly, temporarily leave house steward 3 bottom 3a in, it has the function of liquid storage part), thereafter, cold-producing medium was introduced cold core portion 15 and was carried out coldly, and the part 2a that be lower than dividing plate 8 and the outlet 7 of cold-producing medium by house steward 2 discharged.In such mistake cold mould condenser, hold the structure and the whole formation of condenser of drier, and need not provide miscellaneous part; Can obtain structure compact and that effectively hold drier (unit 11 with drying unit 9), wherein drier can be replaced in house steward 3.

This heat exchanger 1 because compact conformation, is suitable as the condenser of vehicle air conditioner, because the installing space of vehicle is restricted.In this heat exchanger 1 because at least one house steward, promptly with the top house steward 3 who introduces condition accomodating unit 11, sectional area must increase, brought following problem.For example, under the house steward's 3 who on the house steward 21 with circular cross-section as shown in Figure 2 is used as, introduces the situation, house steward 21 becomes the exit portion of condensation of refrigerant core 14 and crosses the intake section of cold core portion 15, and is obviously outstanding before and after the width of the thickness direction relatively hot transfer tube 4 of heat exchanger 1.Therefore, as shown in Figure 3, design is installed condenser (heat exchanger 1) and radiator 30 are arranged to along under the situation of fore-and-aft direction carrying out vehicle, the radiator portion of transfer pipes 4 and radiator 30 is divided so far apart mutually, condenser in the layout adds that the thickness of radiator 30 is very big, therefore the installation design to vehicle throws into question, and descends because of air leakage between condenser and the radiator 30 by the air capacity of condenser, and the performance of condenser descends.

In order to address this problem, for example, as shown in Figure 4, a kind of structure is proposed, the center of relatively hot interchanger thickness direction is arranged in the center that wherein has the house steward of larger cross-section, be the center of relatively hot transfer tube 4, be offset to a side of the thickness direction of heat exchanger along the thickness direction of heat exchanger.In this case, the length 42 that pipe 4 inserts house stewards 41 become big, and the problem of existence is that the diameter of the unit 43 that held must reduce, so as to avoid the end of pipe and the unit 43 that holds between interfere with each other.

For preventing the appearance of this problem, a kind of structure has been proposed, it has used the part in cross section to have the house steward 51 of plane A as shown in Figure 5, as shown in Figure 6, the jack of transfer pipes 4 places house steward 51 plane A, and the center in house steward 51 cross sections is offset to a side (seeing Japan Patent JP-A-2003-185296) of the thickness direction of heat exchanger.In this structure, need not to increase as shown in Figure 4 pipe and insert length 42, it is very little that the gap between transfer pipes 4 and the radiator can keep, and can guarantee the hope diameter of the unit 11 that held simultaneously.

In the above in the structure of Jie Shaoing, because the cross sectional shape of house steward 51 inside is not circular, as shown in Figure 7, when internal pressure P increases, the part of the part of the plane A that formation is introduced above and formation adjacent planar can deform, thereby worries that house steward 51 pressure drag can descend.Although the disclosed structure of JP-A-2000-39288 and JP-A-2003-172592 is set up the inboard of reinforcement to house steward, descend with the pressure drag that prevents house steward, in this structure, make manufacturing cost rise owing to increase parts.In addition, although the disclosed structure of JP-A-2002-48488 is the decline that reservation shape prevents house steward's intensity by the cross sectional shape of regulating house steward, in this case, compare with the situation of circular cross-section, fully the decline of inhibition strength.

Summary of the invention

Therefore, the improvement structure that the purpose of this invention is to provide a kind of house steward of parallel flow heat exchanger, require at least one house steward's sectional area to increase, be enough to make the thickness direction offset placement of house steward along heat exchanger, can not cause the pipe that inserts house steward to insert length increases, be contained in house steward element diameter minimizing and prevented the decline of house steward's pressure drag.

In order to realize purpose above-mentioned, heat exchanger according to the present invention comprises a pair of house steward and the interconnected transfer pipes of a plurality of and described a pair of house steward, the extension parallel to each other of described transfer pipes, form parallel flow heat exchanger, it is characterized in that, at least one described house steward is arranged to, the center line of the described relatively heat exchanger of its kernel of section is put along a lateral deviation of thickness direction, the outer surface of a house steward's the part that is connected with described transfer pipes forms plane A, and the cross sectional shape of an inner manifold forms circle.In heat exchanger, can use this structure, at least one house steward's outer surface wherein, it is near house steward plane A along the circumferential direction, and also forming substantially is the surperficial B on plane.In this case, a house steward's outer surface except described plane A and plane B, forms circular cross-section.In addition, can form recess, when a house steward carries out the end insertion patchhole of transfer pipes, can engage with anchor clamps with fixing described house steward at plane surface B.

In this heat exchanger according to the present invention, insert before the patchhole end of described transfer pipes, and house steward is the pipe that forms by extruding.Certainly, house steward can form by other formation method such as machining.

In addition, in heat exchanger according to the present invention, can use a kind of structure, the unit that wherein has drier and similar substance is contained in a house steward who is provided with plane A.In addition, in another kind of structure, the sectional area of a pair of inner manifold is of different sizes, and bigger house steward forms the house steward with cross sectional shape in described plane A and the described circle.

Heat exchanger according to the present invention was suitable as the cold mould heat exchanger.Promptly be suitable as such mistake cold mould heat exchanger, its heat exchanger core comprises the condensation of refrigerant core that is used for condensating refrigerant and makes the cooled dose of cold core portion of crossing that condensation core condensed refrigerant is cold excessively.In this case, have plane A and circular at least one bottom of house steward of cross sectional shape preferably have the fluid storage function.Liquid refrigerant can flow into cold core portion from the total tube portion with fluid storage function like this.

In addition, heat exchanger according to the present invention is especially suitable for use as the condenser of vehicle air conditioner.The installing space of vehicle is restricted.

In heat exchanger according to the present invention, one side of the thickness direction by house steward being arranged to be offset to heat exchanger, at outer surface plane A is set with the transfer pipes coupling part, gap between heat exchanger and the adjacent device (as radiator) can dwindle, can not cause the length of tube that inserts house steward to increase, reduce the diameter of the unit that is contained in house steward simultaneously.By the inner section shape that makes house steward is circular, by accepting internal pressure equably, even when applying very big internal pressure, has suppressed house steward's distortion, therefore, has prevented the too much decline of house steward's pressure drag.

Therefore, in heat exchanger of the present invention, used a kind of structure, wherein house steward is arranged to be offset to a side of the thickness direction of heat exchanger, can not make house steward's pressure drag descend too much, the insertion length of transfer pipes increases and is contained in house steward's element diameter minimizing.Realized that heat exchanger has optimum configuration and guarantees to have the performance of hope in design.Therefore, even under near the situation radiator is arranged on described heat exchanger, the radiator portion that can prevent transfer pipes and radiator is separated too far away mutually, heat exchanger (condenser) adds that the thickness of radiator increases, and air leaks the air quantity minimizing of passing through condenser that causes between condenser and the radiator.

Description of drawings

By following to the detailed introduction of the preferred embodiments of the present invention and with reference to the accompanying drawings, can understand other purposes of the present invention, feature and advantage.

With reference now to accompanying drawing, introduce embodiments of the invention, wherein embodiment is that mode with example provides, and can not be used to limit the present invention.

Fig. 1 is the front view of heat exchanger, has shown the basic structure of crossing the cold mould condenser;

Fig. 2 is the sectional view that tradition is crossed a house steward of cold mould condenser;

Fig. 3 radiator is cut plane open with the part with condenser of house steward shown in Figure 2, has shown installation example;

Fig. 4 has the plane that the part of house steward's shown in Figure 3 condenser is cut open, has shown house steward's biasing setting;

Fig. 5 is the house steward's of another traditional mistake cold mould condenser a sectional view;

Fig. 6 has the plane that the part of house steward's shown in Figure 5 condenser is cut open;

Fig. 7 is the house steward's of a heat exchanger shown in Figure 5 sectional view, has shown house steward's problem;

Fig. 8 is a sectional view of crossing the house steward of cold mould condenser according to an embodiment of the invention;

Fig. 9 has the plane that the part of house steward's shown in Figure 8 condenser is cut open;

Figure 10 is that the radiator shown in Figure 9 and the part of condenser are cut plane open, has shown the example that changes house steward's biased direction;

Figure 11 is a sectional view of crossing the house steward of cold mould condenser according to another embodiment of the present invention;

Figure 12 has the plane that the part of house steward's shown in Figure 11 condenser is cut open.

The specific embodiment

With reference to figure 8 and 9, provide heat exchanger according to an embodiment of the invention.Heat exchanger according to the present invention is suitable as the condenser of air conditioner for vehicles.Particularly, be used as the cold mould condenser.The basic structure of crossing the cold mould condenser as shown in Figure 1.Promptly, mistake cold mould condenser 1 as heat exchanger comprises two house stewards, minor diameter house steward 2 and major diameter house steward 61 are arranged between

house steward

2 and 61 and a plurality of planar shaped transfer pipes 4 of extension parallel to each other, and undaform fin 5 is arranged between adjacent transfer pipes 4 and the outermost portion.The inlet 6 and the outlet 7 of cold-producing medium are arranged on the house steward 2, and dividing plate 8 is arranged on house steward 2.

Another house steward's 61 conducts have large diameter house steward, and have bigger inner space.Accomodating unit 11 in this house steward 61, it has unit 9 on top, keep dispeling the dry bag of moisture; Be provided with the filter 10 of removing exterior material in the bottom.Unit 11 removably remains on house steward 61 by holding plate 12, and has the circulation part in the center.

At the whole core 13 of crossing cold mould condenser 1, the part on the position of dividing plate 8 forms condensation of refrigerant core 14, and the part below the position of dividing plate 8 formed cold core portion 15, made cooled dose of condensation core 14 condensed refrigerant cold excessively.The cold-producing medium that is condensed by condensation of refrigerant core 14 flows into house steward 61, remove moisture and exterior material from the cold-producing medium that flows into house steward 61, the bottom that the cold-producing medium of liquefaction temporarily is stored in house steward 61 (specifically temporarily is stored in house steward 61 bottom 61a, it has the function of liquid storage part), cold-producing medium was introduced cold core portion 15 and was carried out cold thereafter.That is, realized a kind of cold mould condenser structure of crossing, wherein the drier of refrigeration system and condenser are whole forms, and miscellaneous part is not set.

Crossing in the cold mould condenser 1 according to of the present invention, as shown in Figure 8, the outer surface of house steward 61 the part that is connected with transfer pipes 4 forms plane A, and house steward 61 inner section shape forms circle.In this embodiment, house steward 61 along the circumferential direction also forms the surperficial B on basic plane near the outer surface of plane A, and the outer surface of house steward except that plane A and plane B forms circular cross-section.Therefore, the part of formation plane A and plane B is thicker than other parts.Such house steward 61 can easily form by extruded tube (house steward's raw material) before the processing patchhole.

As shown in Figure 9, vertically processing with predetermined quantity of formed house steward's 61 upper edge pipes introduced by top in the hole 62 of inserting, the end of transfer pipes 4.Then, house steward 61 is arranged to the 63 relative centers of crossing cold mould condenser 1, center in its cross section along thickness direction, and promptly a lateral deviation of center 64 broad ways of relatively hot transfer tube 4 is put.For example, in the time of near radiator is arranged on condenser as shown in Figure 3, biased direction is set in the direction of relative heat sink side, and amount of bias δ sets for and makes plane B outstanding along the heat sink side direction, and outstanding quantity is equal to or less than another house steward's 2 overhang.

Even near radiator was arranged on cold mould condenser 1, use under the situation according to bias structure of the present invention, biased direction can be set in direction towards radiator.For example, as shown in figure 10, the radiator portion of nigh radiator 40 is set and crosses gap between the core of cold mould condenser 1 that can to keep very little and house steward's 61 position can be set in from the end of radiator 40 outstanding along the width of radiator 40, house steward 61 biased direction can be set in the heat sink side direction.In this case, amount of bias is not particularly limited.

In such mistake cold mould condenser (heat exchanger) 1, because the pipe patchhole 62 of transfer pipes 4 processes in the part of plane A, the increase that pipe inserts length can be suppressed to very little, there is no need the diameter of the unit 11 that reduces to hold.In addition, be a side of the thickness direction of cold mould condenser 1 by biasing house steward's 61 center, the enough big capacity of house steward 61 inside can be guaranteed, and has the unit 11 of wishing diameter and can hold wherein, need not reduce the diameter of the unit 11 that holds.In addition, be shaped as circle by the inner section that forms house steward 61, internal pressure can be born equably by inner surface, even applying under the situation of big internal pressure, can prevent that from there is large deformation house steward 61 parts.Therefore, the decline of house steward 61 pressure drag can be avoided, and can obtain having the mistake cold mould condenser 1 of wishing pressure drag.

That is, in the pressure drag of the hope that can guarantee house steward 61, the direction of house steward 61 bias structure can also be guaranteed, and unit 11 diameters likely that held can be guaranteed along hope.Therefore, even be set together with radiator at mistake cold mould condenser 1, under the situation as shown in Figure 3, can prevent to form between the radiator portion of transfer pipes 4 and radiator big gap, the mistake cold mould condenser 1 under the mounting condition and the whole thickness of radiator can suppress very for a short time, wish to have the layout advantage when therefore having realized being installed to vehicle.In addition, can also prevent because the air quantity that passes through condenser that the air leakage causes between condenser and the radiator reduces, thereby show the hope performance of crossing cold mould condenser 1.

Figure 11 and 12 has shown another embodiment of the present invention.In this embodiment, compare with the embodiment shown in 9 with Fig. 8, when the patchhole 72 of transfer pipes 4 adds man-hour on house steward 71, form recess 74 at house steward 71 plane B, it can engage fixedly house steward 71 with anchor clamps 73.In this embodiment, because this recess 74 longitudinally forms on house steward's whole length, even use the structure of band recess 74, house steward 71 can easily form by extrusion modling at predetermined cross sectional shape place.

When processing tube patchhole 72, partly form recess 74,, add house steward's rotation of 71 in man-hour and move and avoid reliably by the fixing house steward 71 of joining jig 73 and recess 74 at plane B.The result is, pipe patchhole 72 can desirable shape and the position process accurately.Other structures, operation and advantage are basic identical with the embodiment of front.

Claims

1. heat exchanger, comprise a pair of house steward and the interconnected transfer pipes of a plurality of and described a pair of house steward, the extension parallel to each other of described transfer pipes, form parallel flow heat exchanger, it is characterized in that, at least one described house steward is arranged to, the center line of the described relatively heat exchanger of its kernel of section is along a direction biasing of thickness direction, the outer surface of at least one described house steward's the part that is connected with described transfer pipes forms plane A, and the inner cross sectional shape shape of at least one described house steward (61) is circular.

2. heat exchanger according to claim 1 is characterized in that, described at least one house steward's outer surface, and near the described plane A of described at least one house steward's circumferencial direction, also forming substantially is the surperficial B on plane.

3. heat exchanger according to claim 2 is characterized in that, described at least one house steward's outer surface forms circular cross-section in the part except described plane A and described plane B.

4. according to claim 2 or 3 described heat exchangers, it is characterized in that described plane B forms recess, when described at least one house steward carries out the end insertion patchhole of described transfer pipes, can engage with anchor clamps with fixing described at least one house steward.

5. heat exchanger according to claim 1 is characterized in that, described at least one house steward before patchhole is inserted in the end of described transfer pipes, is the extrusion molding pipe.

6. heat exchanger according to claim 1 is characterized in that, the unit with drier is contained in described at least one house steward.

7. heat exchanger according to claim 1 is characterized in that the sectional area of described a pair of inner manifold is of different sizes, and bigger house steward forms described house steward with plane A and circular interior cross sectional shape.

8. heat exchanger according to claim 1, it is characterized in that, described heat exchanger formed the cold mould heat exchanger, and its heat exchanger core comprises the condensation of refrigerant core of condensating refrigerant and makes by the cold excessively cold core portion of crossing of described condensation of refrigerant core condensed refrigerant.

9. heat exchanger according to claim 8 is characterized in that, at least one bottom of described at least one house steward has the fluid storage function.

10. heat exchanger according to claim 1 is characterized in that, described heat exchanger is the condenser that is used for vehicle air conditioner.