CN109690225A

CN109690225A - Heat exchanger

Info

Publication number: CN109690225A
Application number: CN201780055820.2A
Authority: CN
Inventors: 佐久间哲
Original assignee: Calsonic Kansei Corp
Current assignee: Marelli Corp
Priority date: 2016-09-14
Filing date: 2017-08-30
Publication date: 2019-04-26
Also published as: JP2018044710A; WO2018051786A1

Abstract

A kind of heat exchanger, wherein, it is laminated with the heat transfer plate (31) of square shape, it is respectively formed cooling water path and refrigerant passage between two adjacent heat transfer plates (31) in the stacking direction, is provided with cooling flow inlet (34) and cooling water export (35) of cooling water path on the heat transfer plate of the end of stacking direction in configuration；And the refrigerant inflow port (36) and refrigerant outflow port (37) of refrigerant passage, wherein, following two groups are provided on the heat transfer plate (31A) of one end of stacking direction in configuration: cooling flow inlet (34) and cooling water export (35) and refrigerant inflow port (36) and refrigerant outflow port (37) are formed with the refrigerant return passage (40) that refrigerant outflow port is returned for refrigerant in configuration on the inside of the heat transfer plate (31A) of one end of stacking direction.

Description

Heat exchanger

Technical field

The present invention relates to the heat exchangers for being laminated with heat transfer plate.

Background technique

For example, as shown in Patent Document 1, water cooled condenser (the water cooled as heat exchanger Condenser), lead in the cooling water that internal heat exchanger passes through with the refrigerant passage and Cooling Water passed through for refrigerant Road is carried out heat exchange between refrigerant and cooling water and is cooled down using cooling water to refrigerant.

This water cooled condenser is made of multiple heat transfer board stackings, and system is respectively formed between adjacent heat transfer plate Cryogen access and cooling water path.About refrigerant passage and cooling water path, each heat transfer plate is separated and is alternately formed, Refrigerant and cooling water carry out heat exchange by heat transfer plate.The heat transfer plate of the one end of configuration in the stacking direction is formed with cooling water Inflow entrance, cooling water export and refrigerant inflow port.It is formed on the heat transfer plate of the other end of configuration in the stacking direction Furthermore refrigerant outflow port is also formed with the refrigerant inflow port and refrigerant outflow port in supercooling portion.

That is, in water cooled condenser shown in patent document 1, the entrance of cooling water and refrigerant ( Do not have to be total four in the case where supercooling portion) it is provided separately on two heat transfer plates at both ends in the stacking direction.

(existing technical literature)

(patent document)

Patent document 1: Japanese Unexamined Patent Publication 2013-119382 bulletin

Summary of the invention

(problem to be solved by the invention)

But from outside pipe arrangement attended operation, from the viewpoint of layout (layout) property etc., it is cooling that there are requirements Situation of the whole configurations of the entrance of water and refrigerant on same heat transfer plate of one end of stacking direction.In this situation Under, the actual length of cooling water path increases, also, for the raising of heat exchange, cooling flow inlet and cold But water export is generally formed in cornerwise corner (corner) of the heat transfer plate of square shape.

From the viewpoint of improving heat exchange, refrigerant inflow port and refrigerant outflow port are formed in the biography of square shape Cornerwise corner of hot plate is preferably.Here, even if refrigerant inflow port is formed in the corner of the heat transfer plate of square shape, from system From the viewpoint of the component setting of SAPMAC method, the effective use etc. of dead space (dead space), the setting of refrigerant outflow port Position will receive restriction, so that there are the restricted situations of freedom degree of the setting position of refrigerant outflow port.

Such as, it is desirable to the one being attached with outside pipe arrangement is set at refrigerant inflow port and refrigerant outflow port In the case where entrance block (block), it is desirable that refrigerant outflow port is set near refrigerant inflow port.In configuration in layer There are in the case where dead space on the outside of the heat transfer plate of the one end in folded direction, in order to effectively utilize dead space, may require that The outflux of refrigerant is arranged in the dead space.There is outside in the outside of the heat transfer plate of one end of stacking direction in configuration In the case where the installation space of component, it may require that and refrigerant outflow port is set in a manner of the installation space for avoiding external component.

Then, the present invention is to propose to solve the above-mentioned problems, it is intended that providing a kind of refrigerant outflow port Setting position the high heat exchanger of freedom degree.

(means used to solve the problem)

The present invention provides a kind of heat exchanger, wherein it is laminated with the heat transfer plate of square shape, it is adjacent in the stacking direction The cooling water path of Cooling Water flowing and the refrigeration of the refrigerant flowing for refrigeration cycle are respectively formed between two heat transfer plates Agent access is provided with Cooling Water from external inflow cooling water path in configuration on the heat transfer plate of the end of stacking direction The cooling water export that cooling flow inlet and Cooling Water are flowed out from cooling water path to outside；And for refrigerant from outside The refrigerant outflow port for flowing into the refrigerant inflow port of refrigerant passage and being flowed out for refrigerant from refrigerant passage to outside, In, two following groups are provided on the heat transfer plate of one end of stacking direction in configuration: cooling flow inlet and cooling water flow The group of outlet；With the group of refrigerant inflow port and refrigerant outflow port, configuring in the heat transfer plate of one end of stacking direction Side is formed with the refrigerant return passage that refrigerant outflow port is returned for refrigerant.

Detailed description of the invention

Fig. 1 shows first embodiments of the invention, are the structure chart of vehicle air conditioning device.

Fig. 2 indicates first embodiment of the invention, is the approximate stereogram of water cooled condenser.

Fig. 3 (a) is the important portion for indicating the flowing water air-cooled condenser of the cooling water of first embodiment of the invention Partial cross-section figure, Fig. 3 (b) are the important portions for indicating the flowing water air-cooled condenser of the refrigerant of first embodiment of the invention Partial cross-section figure.

Fig. 4 indicates first embodiment of the invention, for indicate water cooled condenser entirety refrigerant flowing it is general Read figure.

Fig. 5 (a) is the general of the entrance block for indicating that the solenoid valve of first embodiment of the invention is in the closed position Slightly sectional view, Fig. 5 (b) are expressed as the general of the solenoid valve entrance block in an open position of first embodiment of the invention Slightly sectional view.

Fig. 6 indicates first embodiment of the invention, for represent the intracorporal refrigerant of entry block flowing skeleton diagram.

Fig. 7 (a) be second embodiment of the present invention configuration one end of stacking direction heat transfer plate perspective view, figure 7 (b) and respectively indicated with Fig. 7 (c) outlet port of refrigerant each variation pith perspective view.

Fig. 8 shows second embodiment of the present invention, are the line B-B sectional view of Fig. 7 (a).

Fig. 9 (a) be third embodiment of the present invention configuration one end of stacking direction heat transfer plate perspective view, figure 9 (b) and Fig. 9 (c) respectively indicates the perspective view of the pith of each variation of the outlet port of refrigerant.

Figure 10 indicates third embodiment of the present invention, for the perspective view for the heat transfer plate configured in one end of stacking direction.

Figure 11 indicates third embodiment of the present invention, is the line C-C sectional view of Figure 10.

Specific embodiment

Hereinafter, based on attached drawing, embodiments of the present invention will be described.

(the 1st embodiment)

FIG. 1 to FIG. 6 indicates first embodiment of the invention.As shown in Figure 1, vehicle air conditioning device includes heat pump The refrigeration cycle 1, Warm water circulation 10 and the control unit (not shown) for controlling them of (heat pump) formula.

Refrigeration cycle 1 includes: compressor 2, for compressing refrigerant RF；As the water cooled condenser 3A of heat exchanger, For carrying out heat exchange between the refrigerant RF being had compressed by compressor 2 and warm water；First bypass (bypass) access 4a, is used In the refrigerant passage for bypassing water cooled condenser 3A；First open and close valve 5a, for being opened and closed the first bypass 4a；First throttle Hole (orifice) 6a, for being depressurized to the refrigerant RF for carrying out heat exchange using water cooled condenser 3A；Outdoor heat exchange Device 7, for carrying out the refrigerant RF of heat exchange using water cooled condenser 3A or bypassing water cooled condenser 3A's Heat exchange is carried out between refrigerant RF and outside air；Second throttle orifice 6b, for the refrigeration being discharged from outdoor heat exchanger 7 Agent RF is depressurized；Indoor heat exchanger 8, for depressurizing the refrigerant RF of (expansion) using the second throttle orifice 6b and providing Heat exchange is carried out between to indoor air；Second bypass 4b, for bypassing indoor heat exchanger 8；Second open and close valve 5b, For being opened and closed the second bypass 4b；And reservoir (accumulator) 9, have the function of the gas-liquid separation of refrigerant RF Can, for the refrigerant RF of gas to be only conveyed to compressor 2.

Warm water circulation 10 includes: water pump 11, for recycling warm water (warmed-up cooling water CW)；Water cooled condenser 3A, for passing through for the warm water recycled using water pump 11, the warm water passed through is heated by refrigerant RF；And heating core (heater core) 12, in the warm water recycled using water pump 11 and being provided between the air in compartment and carrying out heat exchange, And air is heated.

Indoor heat exchanger 8 and heating core 12 are configured in the air supply path 30 of air-conditioning unit, the downstream side of air-conditioning unit It is connected by air hose (not shown) with the blow-off outlet (not shown) in compartment.

In refrigeration, the first open and close valve 5a of refrigeration cycle 1 is in an open position and the second open and close valve 5b is in close stance It sets.Outdoor heat exchanger 7 plays a role as condensed device (condenser), and indoor heat exchanger 8 is used as evaporator (evaporator) it plays a role, cold wind is exported into compartment.

In heating, the first open and close valve 5a of refrigeration cycle 1 is in the closed position and and two open and close valve 5b are in open position It sets.Water cooled condenser 3A plays a role as condensed device (condenser), and outdoor heat exchanger 7 plays work as evaporator With.Make the Warm water circulation of Warm water circulation 10, the water cooled condenser 3A of refrigeration cycle 1 by the warm water heating in Warm water circulation 10 and Heating core 12 is heated, warm wind is exported into compartment.

The entrance side access 21 and refrigerant outflow port 37 being connected with the refrigerant inflow port 36 of water cooled condenser 3A Outlet side channels 22, the first bypass 4a and the first segment discharge orifice 6a being connected are formed on entrance block 20.About Entrance block 20 will be described in detail later.

Connect a part of access 26, connection indoor heat exchanger 8 and storage of outdoor heat exchanger 7 and indoor heat exchanger 8 A part of access 27 of liquid device 9, the second bypass 4b and the second open and close valve 5b are formed on access block 25.

As shown in Figure 2 to 4, water cooled condenser 3A have multiple heat transfer plates 31,31A, and multiple heat transfer plates 31, 31A is stacking.Heat transfer plate 31,31A are square shape.As shown in Fig. 3 (a), Fig. 3 (b), in heat transfer plate 31, the laminated body of 31A It is interior, the cooling water path 32 of Cooling Water CW flowing is respectively formed between adjacent two heat transfer plate 31 in the stacking direction And the refrigerant passage 33 for refrigerant RF flowing.

Cooling water path 32 alternately configures in the stacking direction with refrigerant passage 33.Cooling water path 32 is in laminated body Multiple column are inside branched off into, each column are collectively form as identical flow direction.That is, the stream of cooling water CW is so-called one-way flow (flow direction nothing is turned back).

Refrigerant passage 33 is also branched off into multiple column in laminated body, and each column are collectively form as identical flow direction.Also It is to say, the stream of refrigerant RF is so-called one-way flow (referring to the stream of the refrigerant RF of Fig. 4).

As shown in Fig. 2, the heat transfer plate 31A of the one end of configuration in the stacking direction is provided with cooling flow inlet 34, it is used for Cooling Water CW flows into cooling water path 32 from outside；Cooling water export 35 is used for Cooling Water CW from cooling water path 32 It is flowed out to outside；Refrigerant inflow port 36, for flowing into refrigerant passage 33 from outside for refrigerant RF；And cryogen outflux 37, for being flowed out for refrigerant RF from refrigerant passage 33 to outside.

Cooling flow inlet 34 and cooling water export 35 are arranged respectively at the different angles on the diagonal line of heat transfer plate 31A Portion's (corner).Refrigerant inflow port 36 and the configuration of refrigerant outflow port 37 in heat transfer plate 31A and cooling flow inlet 34 and The different corner (corner) of the allocation position of cooling water export 35, refrigerant inflow port 36 and refrigerant outflow port it is close and Configuration.

Configuration is formed with refrigerant return passage 40 on the inside of the heat transfer plate 31A of one end of stacking direction.Specifically, exist Configuration is between the adjacent heat transfer plate 31 on the stacking direction of the heat transfer plate 31A and heat transfer plate 31A of one end of stacking direction It is formed with refrigerant return passage 40.

The outlet 38 of the intracorporal refrigerant passage 33 of stacking of heat transfer plate 31 is in 40 upper opening of refrigerant return passage.Specifically Ground is provided with access protrusion 41 outstanding upwards on heat transfer plate 31A, forms refrigerant with protrusion 41 using the access Return path 40.Refrigerant return passage 40 is linearly to connect the outlet 38 of the refrigerant RF of the laminated body of heat transfer plate 31 and make Between cryogen outflux 37.

As shown in Fig. 5 (a), Fig. 5 (b), Fig. 6, entrance block 20 has by entering with what refrigerant inflow port 36 was connected Mouthful side access 21, the outlet side channels 22 being connected with refrigerant outflow port 37 and it connect entrance side access 21 and outlet side leads to The via set that the first bypass 4a on road 22 is constituted.Entrance block 20 have as access adjustment unit, for being opened and closed The first open and close valve 5a of the first bypass 4a and first segment discharge orifice 6a being arranged on outlet side channels 22.

First open and close valve is electromagnetic type open and close valve, and when non-energized shown in Fig. 5 (a), the first bypass 4a, which is in, to be closed Closed position, refrigerant RF flow to water cooled condenser 3A, and when being powered shown in Fig. 5 (b), the first bypass 4a is in and beats Open position, refrigerant RF is around water cooled condenser 3A (referring to Fig. 6).

As described above, being formed with refrigerant return passage on the inside of the heat transfer plate 31A of one end of stacking direction in configuration 40.Specifically, in the adjacent biography of the stacking direction for the heat transfer plate 31A and heat transfer plate 31A configured in one end of stacking direction Refrigerant return passage 40 is formed between hot plate 31.As long as in addition to cooling flow inlet 34, cooling water export 35 is arranged And if the space other than the position of refrigerant inflow port 36, refrigerant return passage 40 can freely be set.For example, such as first Shown in embodiment, refrigerant outflow port 37 can be set in close to the position of refrigerant inflow port 36.It is, therefore, possible to provide refrigeration The high water cooled condenser 3A of the freedom degree of the setting position of agent outflux 37.

Cooling Water CW enters the intracorporal entrance of stacking (cooling flow inlet 34) and Cooling Water of heat transfer plate 31,31A CW from heat transfer plate 31,31A laminated body in the group of outlet (cooling water export 35) that flows out and for refrigerant RF enter biography Hot plate 31,31A the intracorporal entrance of stacking (refrigerant inflow port 36) flowed out of heat transfer plate 31 laminated body with for refrigerant RF The group of outlet (refrigerant outflow port 37) out is respectively formed on the different diagonal lines of heat transfer plate 31A.Cooling flow inlet 34, cooling water export 35, refrigerant inflow port 36, refrigerant outflow port 37 are respectively formed at the different angles of heat transfer plate 31A Portion's (corner).

Therefore, the cooling water that cooling water CW with not taking a short cut (shortcut) as far as possible and without being detained flows through one-way fluid path leads to Road 32 (shown in such as Fig. 3 (a)).Ground and the refrigerant of one-way fluid path without being detained is flowed through in addition, refrigerant RF does not take a short cut as far as possible Access 33 (shown in such as Fig. 3 (b)).Therefore, it is conducting heat even if refrigerant inflow port 36 is closely configured with refrigerant outflow port 37 Heat exchange will not be reduced on plate 31A.

Configure two following groups together on the heat transfer plate 31A of one end of stacking direction in configuration: cooling water flows into The group of mouth 34 and cooling water export 35；And the group of refrigerant inflow port 36 and refrigerant outflow port 37.Therefore, because cooling The inflow entrance 34,36 and outflux 35,37 of water passage 32 and 33 both sides of refrigerant passage configure on identical heat transfer plate 31A, Therefore 32 side of cooling water path and the inflow entrance 34,36 of 33 side both sides of refrigerant passage and the piping connectivity of outflux 35,37 Well, layout is also good.

It is fixed with entrance block 20 on the heat transfer plate 31A of one end of stacking direction in configuration, the entrance block 20 It is single with the via set being connected with the refrigerant inflow port 36 closely configured with refrigerant outflow port 37 and its access adjustment First (access switching unit, passage resistance unit).Therefore, by the way that entrance block 20 to be mounted on heat transfer plate 31A, Neng Gouan It fills the component being connected with the refrigerant inflow port 36 of water cooled condenser 3A and refrigerant outflow port 37 and configuration is attached at its Close component, therefore operability is installed well, layout is also good.

Heat exchanger is water cooled condenser 3A, and the via set of entrance block 20 is to be connected with refrigerant inflow port 36 Entrance side access 21, the outlet side channels 22 that are connected with refrigerant outflow port 37 and for connecting entrance side access 21 With the first bypass 4a of outlet side channels 22, access adjustment unit is the first opening and closing for being opened and closed the first bypass 4a The valve 5a and first segment discharge orifice 6a being arranged on outlet side channels 22.Therefore, the refrigeration cycle 1 that heating and refrigeration can be used separately It can be constituted with a small amount of component, and keep high layout, here, water cooled condenser 3A be used in heating, and made Water cooled condenser 3A is not used when cold.

(second embodiment)

As shown in Fig. 7 (a) and Fig. 8, second embodiment of the present invention is shown.In Fig. 7 (a), on heat transfer plate 31B It is provided with two paths protrusion 41, forms two refrigerant return passages with protrusion 41 and on the inside of it using the two accesses 40.Two refrigerant return passages 40 are respectively communicated between the outlet 38 and refrigerant outflow port 37 of the laminated body of heat transfer plate 31B.

In Fig. 7 (a), Fig. 8, the identical constituting parts of attached drawing mark identical symbol, and omit the description.Second embodiment party Other structures of the water cooled condenser 3B of formula are identical with first embodiment, and and the description is omitted.

In this second embodiment, also based on reason same as the first embodiment, it is capable of providing refrigerant outflow port The high water cooled condenser 3B of the freedom degree of 37 setting position.

In this second embodiment, it due to being formed with two refrigerant return passages 40, can prevent as far as possible because processing institute It is caused to be thinned, because of the flatness decline of the heat transfer plate 31B caused by machining deformation.By preventing flatness from declining, can press down Failure welding processed.That is, as shown in the first embodiment, in the case where refrigerant return passage 40 is one, in order to The passage sections product for ensuring specified value or more, being thinned, because of the heat transfer plate caused by machining deformation caused by will lead to because of processing The risk of the flatness decline of 31A is high, still, according to the heat transfer plate 31B of second embodiment, can prevent this wind as best one can Danger.

In this second embodiment, due to being formed with two refrigerant return passages 40, in first embodiment The height h1 (Fig. 3 (b)) of refrigerant return passage 40 compare, can reduce the height h2 (Fig. 8) of refrigerant return passage 40. Accordingly, the height H1 relative to the entrance block 20 of first embodiment can reduce the height H2 of entrance block 20, can The densification on stacking direction to realize water cooled condenser (heat exchanger).

In this second embodiment, refrigerant return passage 40 is set as two, but also can be set three or more.

Respectively as shown in Fig. 7 (b), Fig. 7 (c), the position of the outlet 38 of refrigerant RF can also be with straight line position, rather than angle Portion.

(third embodiment)

In such as Fig. 9 (a), the heat transfer plate 31C of third embodiment of the present invention out is shown.In Fig. 9 (a), conducting heat Be uniformly set with second embodiment on plate 31C there are two access protrusion 41, using the two accesses with protrusion 41 shape At two refrigerant return passages 40.In turn, unlike second embodiment, in addition to access is also set up other than protrusion 41 There is protrusion 42.

Protrusion 42 is by the plane general arrangement across shape of heat transfer plate 31B.Specifically, protrusion 42 is configured to and in two The region in the outside that 41 area encompassed of access protrusion and two access protrusions 41 are surrounded.Since protrusion 42 is straight by it Line position is connected to access protrusion 41, therefore the function of flowing refrigerant RF is small.In this way, since protrusion 42 makes refrigerant RF The function of flowing is small, there is no need to the access identical flowing path section of protrusion 41.

In Fig. 9 (a), the identical constituting parts of attached drawing mark identical symbol, and omit the description.Since third is implemented Other structures of the water cooled condenser 3C of mode are identical with first embodiment, and and the description is omitted.

In the third embodiment, also based on reason same as the first embodiment, refrigerant outflow port can be provided The high water cooled condenser 3C of the freedom degree of 37 setting position.

In the third embodiment, protrusion 42 has been set along with access protrusion 41 on heat transfer plate 31C, therefore has been easy Ensure the processability and rigidity of heat transfer plate 31C.

In the third embodiment, refrigerant return passage is set as two, but also can be set three or more.

Respectively as shown in Fig. 9 (b), Fig. 9 (c), the position of the outlet 38 of refrigerant RF may be straight line position, rather than angle Portion.

(the 4th embodiment)

Figure 10 and Figure 11 shows the 4th embodiment of the invention.In Figure 10, on heat transfer plate 31D, surface is being accounted for The access protrusion 41 of wide cut is set in the whole space of more than half of product, using the access with protrusion 41 and on the inside of it shape At the refrigerant return passage 40 of wide cut.The refrigerant return passage 40 of wide cut is respectively communicated with going out for the laminated body of heat transfer plate 31D Between mouth 38 and refrigerant outflow port 37.The reinforcement abutted with heat transfer plate 31 is provided on multiple positions of the access with protrusion 41 Muscle 43.

Identical symbol is marked in the identical constituting parts of Figure 10, Tu11Zhong, attached drawing, and is omitted the description.In fact due to the 4th The other structures for applying the water cooled condenser 3D of mode are identical as the 1st embodiment, and and the description is omitted.

In the fourth embodiment, also based on reason same as the first embodiment, refrigerant outflow port can be provided The high water cooled condenser 3D of the freedom degree of 37 setting position.

In the 4th embodiment, returned since the space of more than half of the entire area in heat transfer plate 31D forms refrigerant Access 40 is returned, therefore compared with the height h2 (Fig. 8) of the access of second embodiment protrusion 41, can reduce refrigerant return The height h3 of access 40.Accordingly, the height H2 relative to the entrance block 20 of second embodiment, can reduce discrepancy buccal mass The further densification on the stacking direction of water cooled condenser (heat exchanger) may be implemented in the height H3 of body 20.

In addition, can heat transfer plate 31D almost entire space, be specially except cooling flow inlet 34, cooling water flow is arranged Refrigerant return passage 40 is formed to the maximum extent in entire space other than outlet 35 and the position of refrigerant inflow port 36, if The the surface area for setting refrigerant return passage 40 the big, more can be realized on the stacking direction of water cooled condenser (heat exchanger) Further densification.

(variation)

In first to fourth embodiment, refrigerant outflow port 37 is configured close to refrigerant inflow port 36, but simultaneously It is not limited to this.That is, in configuration, there are dead spaces on the outside of the heat transfer plate 31A~31D of one end of stacking direction In the case where (Dead Space), in order to effectively utilize dead space, refrigerant outflow port 37 can be set in the dead space.? Configuration on the outside of the heat transfer plate 31A~31D of one end of stacking direction there are in the case where the installation space of external component, can Refrigerant outflow port 37 is set in a manner of the installation space for avoiding external component.

In first to fourth embodiment, the stream of cooling water CW is one-way flow, but may be that multidirectional stream (is repeatedly turned back Stream).

More than, embodiments of the present invention are illustrated, but these embodiments are only in order to facilitate understanding Of the invention and record example, the present invention is not limited to these embodiments.Technical scope of the invention does not limit In the specific technology item disclosed in above embodiment, also comprising being easy derived various changes by these embodiments Shape, change, equivalent technologies etc..

This application claims based on Japanese Patent Application No. 2016-179410 preferential filed on September 14th, 2016 Power, all the contents of the application are used as reference to be incorporated into this specification.

(industrial availability)

According to the present invention, as long as except for cooling flow inlet, cooling water export and refrigerant inflow port to be arranged Position space if, refrigerant return passage can be set freely, therefore can provide the setting of refrigerant outflow port The high heat exchanger of the freedom degree of position.

(explanation of appended drawing reference)

3A~3D water cooled condenser (heat exchanger)

31,31A~31D heat transfer plate

32 cooling water paths

33 refrigerant passages

34 cooling flow inlets

35 cooling water exports

36 refrigerant inflow ports

37 refrigerant outflow ports

40 refrigerant return passages

41 access protrusions

Claims (according to the 19th article of modification of treaty)

1. a kind of heat exchanger (3A~3D), wherein

It is laminated with the heat transfer plate (31) of square shape,

The cooling water of Cooling Water (CW) flowing is respectively formed between adjacent two heat transfer plates (31) in the stacking direction Access (32) and the refrigerant passage (33) of refrigerant (RF) flowing for refrigeration cycle,

Configuration is provided on the heat transfer plate (31,31A~31D) of the end of stacking direction

Cooling Water (CW) from the external cooling water inlet (34) for flowing into the cooling water path (32) and Cooling Water (CW) from Cooling water export (35) of the cooling water path (32) to outside outflow；And

For refrigerant (RF) from the external refrigerant inflow port (36) for flowing into the refrigerant passage (33) and for refrigerant (RF) From the refrigerant passage (33) to the refrigerant outflow port (37) of outside outflow, which is characterized in that

Two following groups are provided on the heat transfer plate (31A~31D) of one end of stacking direction in configuration:

The group of the cooling flow inlet (34) and the cooling water export (35)；With the refrigerant inflow port (36) and system The group of cryogen outflux (37),

It is formed on the inside of the heat transfer plate (31A~31D) of one end of stacking direction in configuration and is returned for refrigerant (RF) The refrigerant return passage (40) of the refrigerant outflow port (37),

It is provided on the heat transfer plate (31A) of one end of stacking direction in configuration and extends to the refrigerant outflow port (37) Access with protrusion (41),

The refrigerant return passage (40) are formed using the access protrusion (41),

The access protrusion (41) be it is multiple,

The a plurality of refrigerant return passage (40) is formed using the access protrusion (41).

2. heat exchanger (3C) according to claim 1, which is characterized in that

On the heat transfer plate (31C), except the access is additionally provided with protrusion (42) in addition to protrusion (41).

(3. deletion)

(4. deletion)

(5. deletion)

Claims

1. a kind of heat exchanger (3A~3D), wherein

It is laminated with the heat transfer plate (31) of square shape,

It is formed on the inside of the heat transfer plate (31A~31D) of one end of stacking direction in configuration and is returned for refrigerant (RF) The refrigerant return passage (40) of the refrigerant outflow port (37).

2. heat exchanger (3A~3D) according to claim 1, which is characterized in that

The refrigerant return passage (40) are formed using the access protrusion (41).

3. heat exchanger (3B~3D) according to claim 2, which is characterized in that

The access protrusion (41) be it is multiple,

4. heat exchanger (3C) according to claim 3, which is characterized in that

5. heat exchanger (3D) according to claim 3, which is characterized in that

In configuration in the inside of the heat transfer plate (31D) of one end of stacking direction, in the sky of more than half for accounting for entire area Between form the refrigerant return passage.