The evaporimeter of band cool storage function
Technical field
The present invention relates to the evaporimeter of the employed band cool storage function of motorcar air conditioner of vehicle, this vehicle makes the engine as the drive source of compressor stop when stopping temporarily.
Background technology
In this specification and technical scheme scope, with about being called up and down of Fig. 1.
In recent years, having proposed a kind of fuel economy raising with environmental protection and/or automobile etc. is that purpose makes the self-braking automobile of engine when parkings such as waiting signal.
But, in common air conditioner for automobile, when engine is stopped, the compressor of engine as drive source stopped, therefore not to evaporimeter the supply system cryogen, the problem that exists refrigerating capacity sharply to descend.
So, for addressing this problem, consider to make evaporimeter have cool storage function, thereby when engine stops to cause compressor to stop, utilizing cold and hot that evaporimeter accumulates the indoor cooling of car.
Evaporimeter as the band cool storage function has proposed a kind of scheme, and it possesses: a pair of cold-producing medium that leaves the compartment of terrain configuration mutually is with collector portion (head); A plurality of flat pipe for flowing of refrigerant, its between two cold-producing mediums are with collector portion, width leaves compartment of terrain configuration towards fore-and-aft direction and on the length direction of cold-producing medium with collector portion, and both ends are communicated with collector portion with two cold-producing mediums respectively; Cool storage material container with hollow form; Its width is set to stationary state and encloses in inside that towards fore-and-aft direction ground configuration and at the single face of pipe for flowing of refrigerant cool storage material is arranged; The size of the thickness direction of cool storage material container equates on the whole; A plurality of groups that are made up of pipe for flowing of refrigerant and cool storage material container are left the compartment of terrain configuration; The adjacent set part to each other of the group that pipe for flowing of refrigerant and cool storage material container are constituted becomes ventilation gap, disposes fin fin (fin, fin) at ventilation gap, and this fin engages (with reference to No. 4043776 communique of special permission) with pipe for flowing of refrigerant and cool storage material container.
Evaporimeter according to the band cool storage function of above-mentioned patent gazette record accumulates in the cool storage material in the cool storage material container cold and hot through the low-temperature refrigerant that in pipe for flowing of refrigerant, flows.
But, in the evaporimeter of the band cool storage function that above-mentioned patent gazette is put down in writing, making under the identical situation of effective core area, the quantity of comparing pipe for flowing of refrigerant with the common evaporimeter that does not have the cool storage material container tails off, the problem that exists cooling performance to descend.
The problems referred to above that evaporimeter had for the band cool storage function that solves the record of above-mentioned patent gazette; The application's application people had proposed a kind of evaporimeter with cool storage function in the past; Wherein, Extend upward and a plurality of flat pipe for flowing of refrigerant portion of width frontage and airiness direction leaves the compartment of terrain by shape configuration side by side between mutually at upper and lower; Pipe for flowing of refrigerant portion adjacent forms ventilation gap each other; In a plurality of ventilation gaps and non-conterminous ventilation gap of at least a portion in whole ventilation gaps, dispose the cool storage material container of having enclosed cool storage material, in remaining ventilation gap, disposed fin (opening the 2010-149814 communique) with reference to the spy.
But; In the evaporimeter of the band cool storage function that above-mentioned communique is put down in writing, be purpose to improve the cold-storage performance, increase the amount of enclosing the cool storage material in the cool storage material container if want not change the size of heat exchange core; The quantity that then increases the cool storage material container perhaps/and the container height of cool storage material integral container is increased on the whole is effective; But there is the problem of ventilation (ventilations) resistance rising in the passing through area and all can reduce of the air of ventilation gap in either case.
Summary of the invention
The object of the present invention is to provide the evaporimeter that addresses the above problem, on the basis of the decline that has suppressed cooling performance, compares the band cool storage function of the rising that can suppress aeration resistance with the evaporimeter of the band cool storage function of above-mentioned open communique record.
For realizing above-mentioned purpose, the present invention includes following mode.
1) a kind of evaporimeter with cool storage function; Extend upward and a plurality of flat pipe for flowing of refrigerant of width frontage and airiness direction leave the compartment of terrain mutually by shape configuration side by side at upper and lower; Be formed with ventilation gap each other at adjacent pipe for flowing of refrigerant, dispose the cool storage material container of having enclosed cool storage material in a part of ventilation gap in whole ventilation gaps, in remaining ventilation gap, dispose outside heat sink; Wherein
The cool storage material container possesses the container body portion that engages with pipe for flowing of refrigerant and is arranged to link to each other with the downstream side edge part of container body portion and than the pipe for flowing of refrigerant outside extension that stretches out of side more downstream; The outside heat sink that in the adjacent ventilation gap of the ventilation gap that disposes the cool storage material container, is disposed possesses the heat sink body portion that engages with pipe for flowing of refrigerant and is arranged to link to each other with the downstream side edge part of heat sink body portion and than the pipe for flowing of refrigerant outside extension that stretches out of side more downstream, the outside extension of outside heat sink contacts with at least one face in the two sides of the outside of cool storage material container extension.
2) according to above-mentioned 1) evaporimeter of described band cool storage function; In the ventilation gap of the both sides of the ventilation gap that disposes the cool storage material container, dispose outside heat sink respectively, the outside extension of outside heat sink contacts with the two sides of the outside extension of cool storage material container.
3) according to above-mentioned 1) evaporimeter of described band cool storage function; The outside extension of cool storage material container bloats to the orientation outside of pipe for flowing of refrigerant with respect to container body portion in the length range of above-below direction, and the size of the thickness direction of the size container main part of the thickness direction of outside extension is big.
4) according to above-mentioned 1) evaporimeter of described band cool storage function, the outside extension of cool storage material container comprises: the base portion that the size of thickness direction equates with the size of the thickness direction of container body portion; With at a plurality of protuberances that leave on above-below direction on the base portion that the compartment of terrain is provided with and bloat to the orientation outside of pipe for flowing of refrigerant with respect to base portion.
5) according to above-mentioned 1) evaporimeter of described band cool storage function, the outside extension of outside heat sink is brazed in the outside extension of cool storage material container.
6) according to above-mentioned 1) evaporimeter of described band cool storage function; The cool storage material container is formed by two metallic plates that circumference engages each other, the direction outside bloats and is provided with container body portion and outside extension to the left and right through making at least one metallic plate in two metallic plates.
7) according to above-mentioned 1) evaporimeter of described band cool storage function, in the cool storage material container, dispose from the inner fin of container main part extension to the outside.
8) according to above-mentioned 7) evaporimeter of described band cool storage function, inner fin is a corrugated, the connecting portion that is included in the crest portion of extending on the direction of ventilation, the trough portion of on direction of ventilation, extending and crest portion is connected with trough portion.
9) according to above-mentioned 7) evaporimeter of described band cool storage function; Inner fin is the biasing shape; Through on direction of ventilation, arranging a plurality of wavy band plates and their mutual one connections being formed; The connecting portion that this wavy band plate is included in the crest portion of extending on the direction of ventilation, the trough portion of on direction of ventilation, extending and crest portion is connected with trough portion, the crest portion of two adjacent on direction of ventilation band plates each other with trough portion each other on above-below direction the position stagger.
10) according to above-mentioned 1) evaporimeter of described band cool storage function, the container body portion of cool storage material container is brazed in pipe for flowing of refrigerant, is formed with groove in part outer surface, that be brazed in pipe for flowing of refrigerant of the container body portion of cool storage material container.
11) according to above-mentioned 10) evaporimeter of described band cool storage function, the formed groove of part outer surface, that be brazed in pipe for flowing of refrigerant in the container body portion of cool storage material container is grid-like.
12) according to above-mentioned 1) evaporimeter of described band cool storage function; Possess by width frontage and airiness direction and on direction of ventilation, leave the group that a plurality of flat pipe for flowing of refrigerant of compartment of terrain configuration constitute, the container body portion of cool storage material container is configured to cross over all pipe for flowing of refrigerant of this group and is engaged in pipe for flowing of refrigerant.
13) according to above-mentioned 1) evaporimeter of described band cool storage function; In the container body portion of cool storage material container, be provided with the internal volume minimizing portion that reduces through the internal volume that the cool storage material wall of a container is out of shape partly to the inside form and make the cool storage material container.
14) according to above-mentioned 13) evaporimeter of described band cool storage function, the internal volume minimizing portion of the container body portion of cool storage material container forms, and when the high temperature that further becomes above the environment for use temperature, expands because of the rising of interior pressure.
15) according to above-mentioned 1) evaporimeter of described band cool storage function is 70~90% as the volume of the cool storage material of having enclosed with respect to the cool storage material filling rate of the ratio of the internal volume of cool storage material container.
16) according to above-mentioned 15) evaporimeter of described band cool storage function, the cool storage material filling rate is 70~80%.
17) according to above-mentioned 1) evaporimeter of described band cool storage function; Pipe for flowing of refrigerant in the thermo-contact of cool storage material container; Be provided with a plurality of refrigerant flow paths of arranging on the width at pipe for flowing of refrigerant across partition wall; Be made as tmm, the height of partition wall is made as hmm, will highly be made as under the situation of Hmm as the pipe of the size of the thickness direction of pipe for flowing of refrigerant at thickness, satisfy the relation of 0.1≤t≤0.4,0.64≤h/H≤0.86 partition wall.
18) according to above-mentioned 17) evaporimeter of described band cool storage function, be made as n, the width of pipe for flowing of refrigerant is made as under the situation of Wmm in quantity partition wall, satisfy 0.07≤(relation of n * t)/W≤0.31.
19) according to above-mentioned 17) evaporimeter of described band cool storage function, the pipe height H=12~25mm of pipe for flowing of refrigerant, the width W of pipe for flowing of refrigerant=1.3~3.0mm.
According to above-mentioned 1)~19) the evaporimeter of band cool storage function, the cool storage material container possesses: the container body portion that engages with pipe for flowing of refrigerant; Be arranged to link to each other and than the pipe for flowing of refrigerant outside extension that stretches out of side more downstream with the downstream side edge part of container body portion; Therefore compare with the cool storage material container of the evaporimeter of the band cool storage function of above-mentioned open communique record, the amount that can enclose the cool storage material in the cool storage material container is increased by the amount of outside extension.Therefore; Size ground not changing the heat exchange core increases under the situation of the amount of enclosing the cool storage material in the cool storage material container; The quantity that also need not increase the cool storage material container perhaps/and the container height of cool storage material integral container is increased on the whole; Compare the minimizing of passing through area of the air that can suppress ventilation gap with the above-mentioned evaporimeter that discloses the band cool storage function of communique record, can suppress the rising of aeration resistance.
And; Extend upward and a plurality of flat pipe for flowing of refrigerant portion of width frontage and airiness direction leaves the compartment of terrain mutually by shape configuration side by side at upper and lower; Pipe for flowing of refrigerant portion adjacent is formed with ventilation gap each other; In at least a portion ventilation gap and non-conterminous ventilation gap in whole ventilation gaps, dispose the cool storage material container of having enclosed cool storage material, in remaining ventilation gap, dispose outside heat sink; Even therefore under the situation that the evaporimeter that makes effective core area with the band cool storage function of above-mentioned patent gazette record equates, the quantity of pipe for flowing of refrigerant can not reduce yet.Therefore, can suppress the decline of cooling performance.
Have, the outside heat sink that in the adjacent ventilation gap of the ventilation gap that disposes the cool storage material container, is disposed possesses: the heat sink body portion that engages with pipe for flowing of refrigerant again; Be arranged to link to each other and than the pipe for flowing of refrigerant outside extension that stretches out of side more downstream with the downstream side edge part of heat sink body portion; At least one face in the two sides of the outside extension of outside heat sink and the outside extension of cool storage material container; Therefore when compressor operating; Accumulate in the cool storage material in the cool storage material container under the cold and hot situation, cool storage material is by the refrigerant cools that in pipe for flowing of refrigerant, flows, and the air cooling that reduced of the temperature of coming by flowing at ventilation gap; Thereby can cool off cool storage material efficiently, the cold-storage performance improves.On the other hand; When thereby engine stops to cause compressor to stop; The cold and hot pipe for flowing of refrigerant through its both sides that cool storage material had in the container body portion of cool storage material container is passed to the air through adjacent ventilation gap; And in the outside extension of cool storage material container cool storage material had that cold and hot the extension warp is passed to the air through ventilation gap with the outside heat sink of at least one engage sides from the outside, thereby put cold performance and improve.
According to above-mentioned 2) the evaporimeter of band cool storage function, the cool storage material when compressor operating in the cool storage material container is accumulated the cold-storage performance when cold and hot and the cool storage material in the cool storage material container is emitted when cold and hot when compressor stops the cold performance of putting all further improves.
According to above-mentioned 3) and 4) the evaporimeter of band cool storage function, can further increase the amount of the cool storage material in the cold-storage container.
According to above-mentioned 5) the evaporimeter of band cool storage function, the heat-conducting area of the cool storage material in the two side of the outside extension of cool storage material container and the outside extension increases.
According to above-mentioned 6) the evaporimeter of band cool storage function, can make the cool storage material container more simply.
According to above-mentioned 7) the evaporimeter of band cool storage function; In the cool storage material container, dispose from the inner fin of container main part extension to the outside, therefore the cool storage material in the extension of the outside is also cooled off by the cold-producing medium that in pipe for flowing of refrigerant, flows apace.Therefore, can cool off the interior cool storage material of cool storage material container efficiently.
According to above-mentioned 8) and 9) the evaporimeter of band cool storage function, the cool storage material in the extension of the outside is cooled off by the cold-producing medium that in pipe for flowing of refrigerant, flows more effectively.
According to above-mentioned 10) and 11) the evaporimeter of band cool storage function; The scolder of solder flux of fusion (flux) and/or fusion flows in groove and is easy to arrive the container body portion of cool storage material container and the integral body between the pipe for flowing of refrigerant, so the braze ability of the container body portion of cool storage material container and pipe for flowing of refrigerant improves.
According to above-mentioned 13) and 14) the evaporimeter of band cool storage function; Be provided with the internal volume minimizing portion that reduces through the internal volume that cool storage material wall of a container part is out of shape to the inside form and make the cool storage material container in the container body portion of cool storage material container, so the internal volume of cool storage material container is compared with the situation that internal volume minimizing portion is not set and is reduced.Its result; Even the enclosed volume of the cool storage material in the cool storage material container is become be used to the amount of the suitable cool storage material filling rate that obtains to be assumed to be under the situation that internal volume minimizing portion is not set (for example 70~90%), cool storage material also will exist till near the upper end of cool storage material container.Therefore; Even near the upper end of cool storage material container, also can put aside cold and hot; When compressor stops; Can be suppressed at ventilation gap in the upper end that is equivalent to the cool storage material container near the temperature of part flow air rise, can suppress fluctuation as the delivery temperature of the temperature of the air of the evaporimeter through the band cool storage function.
In addition; Above-mentioned 13) and 14) the evaporimeter of band cool storage function in; The intensity of cool storage material container is designed to; In common environment for use temperature range scope for example-40~90 ℃, even thereby the cool storage material variable density of liquid phase state and since in cool storage material container 60 residual air thermal expansion press liter in making, can damaged intensity yet.And; Facing than common environment for use temperature range high temperature for example under 100 ℃ the situation; Thereby the thermal expansion of remaining air becomes and significantly the interior pressure of cool storage material container is risen singularly in the variable density of the cool storage material of liquid phase state and the cool storage material container, still, and in this case; The internal volume minimizing portion of cool storage material container is out of shape with the mode that expands, can prevent the cool storage material container in press and rise a breakage that is caused.And; Because other parts of strength ratio of internal volume minimizing portion are low; Therefore facing under the situation of high temperature more, the cool storage material container is damaged and cool storage material is leaked in internal volume minimizing portion, still; Because the leakage position of cool storage material is confirmed, therefore can take some countermeasures to the cool storage material that leaks with comparalive ease.
According to above-mentioned 15) and 16) the evaporimeter of band cool storage function; In environment for use temperature scope for example-40~90 ℃; Even the cool storage material variable density of liquid phase state and remaining air thermal expansion in the cool storage material container also can prevent the breakage that interior pressure caused of cool storage material container.
According to above-mentioned 16) the evaporimeter of band cool storage function, can prevent the breakage that interior pressure caused of cool storage material container in the environment for use temperature province effectively.
According to above-mentioned 17)~19) band cool storage function evaporimeter; When cold-storage by the cold-producing medium that in the refrigerant flow path of pipe for flowing of refrigerant, flows with the cold and hot two sides that are delivered to efficiently; And put make when cold in the cool storage material container cool storage material had cold and hot on the pipe short transverse efficiently through pipe for flowing of refrigerant, the cold-storage performance is with to put cold performance all very good.And, the refrigeration performance when also not sacrificing the common refrigeration in the compressor operating.
According to above-mentioned 18) the evaporimeter of band cool storage function, the cold-storage performance is with to put cold performance all better.
Description of drawings
Fig. 1 is the part cutaway drawing that the integral body of the evaporimeter of expression band cool storage function of the present invention constitutes.
Fig. 2 is an A-A line amplification view among Fig. 1.
Fig. 3 is the exploded perspective view of cool storage material container of evaporimeter of the band cool storage function of presentation graphs 1.
Fig. 4 is the curve map that expression is used for confirming the result of the computer Simulation of carrying out with respect to the cool storage material filling rate of the ratio of the inner pressurd vessel of cool storage material container as the volume of the cool storage material of having enclosed.
Fig. 5 expression be used for confirming as the volume of the cool storage material of having enclosed with respect to the cool storage material filling rate of the ratio of the inner pressurd vessel of cool storage material container carry out, the result's of the computer Simulation different curve map with Fig. 4.
Fig. 6 is the result's of the thickness of the expression partition wall that is used for confirming pipe for flowing of refrigerant and the computer Simulation of carrying out a curve map.
Fig. 7 is the result's of the thickness of the expression partition wall that is used for confirming pipe for flowing of refrigerant and the computer Simulation different with Fig. 6 of carrying out a curve map.
Fig. 8 is the expression height that is used for confirming partition wall with respect to the result's of the computer Simulation of carrying out as the ratio of the pipe height of the size of the thickness direction of pipe for flowing of refrigerant curve map.
The height that Fig. 9 expression is used for confirming partition wall with respect to the ratio as the pipe height of the size of the thickness direction of pipe for flowing of refrigerant carry out, the result's of the computer Simulation different curve map with Fig. 8.
Figure 10 is the exploded perspective view of first variation of expression cool storage material container.
Figure 11 is the exploded perspective view of second variation of expression cool storage material container.
Figure 12 is the exploded perspective view of the 3rd variation of expression cool storage material container.
The specific embodiment
Embodiment of the present invention is described with reference to the accompanying drawings.Have again, in whole accompanying drawings, same section and same object marked identical Reference numeral and omit the explanation of repetition.
In following explanation, before direction of ventilation downstream (direction of being represented by arrow X among Fig. 1 and Fig. 2) be called, after a side that will be opposite with it is called.In addition, about in the time of will be from the forward observation rear Fig. 1 about be called about.
Have, in following explanation, term " aluminium " also comprises aluminium alloy except fine aluminium again.
The integral body of the evaporimeter of the band cool storage function that Fig. 1 representes to the present invention relates to constitutes, and Fig. 2 and Fig. 3 represent the formation of its pith.
In Fig. 1, band cool storage function evaporimeter 1 possesses: on above-below direction, leave the compartment of terrain configuration at upwardly extending aluminum first header of right and left (head tank) 2 and aluminum second header 3; With heat exchange core 4 in 2,3 settings of two headers.
First header 2 possess the refrigerant inlet header portion 5 that is positioned at front side (direction of ventilation downstream) be positioned at rear side (direction of ventilation upstream side) and with incorporate refrigerant outlet collector portion of refrigerant inlet header portion 56.Be provided with refrigerant inlet 7 in the right part of refrigerant inlet header portion 5, be provided with refrigerant outlet 8 in the right part of refrigerant outlet collector portion 6.Second header 3 possess the first intermediate header portion 9 that is positioned at the front side be positioned at rear side and with the 9 incorporate second intermediate header portions 11 of the first intermediate header portion.Cross over the right part of two intermediate header portions 9,11 and engage in the first intermediate header portion 9 of second header 3 with in the second intermediate header portion 11, and become the communication means 12 of path and be communicated with through inner.
As depicted in figs. 1 and 2, at heat exchange core 4, extend upward and a plurality of aluminium extrusion moulding material system flat pipe for flowing of refrigerant 13 of width frontage and airiness direction (fore-and-aft direction) leave on left and right directions at interval by arranging the shape configuration at upper and lower.Promptly; By leave on the fore-and-aft direction compartment of terrain configuration a plurality of, be that a plurality of groups 14 of being constituted of two pipe for flowing of refrigerant 13 leave the compartment of terrain configuration on left and right directions here, the adjacent set of the group 14 that is constituted at the pipe for flowing of refrigerant 13 by front and back is formed with ventilation gap 15 each other.The upper end of the pipe for flowing of refrigerant 13 of front side is connected with refrigerant inlet header portion 5, and its bottom is connected with the first intermediate header portion 9.In addition, the upper end of the pipe for flowing of refrigerant 13 of rear side is connected with refrigerant outlet collector portion 6, and its bottom is connected with the second intermediate header portion 11.
At pipe for flowing of refrigerant 13, be provided with a plurality of refrigerant flow paths 33 of going up arrangement at the width (fore-and-aft direction) of pipe for flowing of refrigerant 13 across partition wall 34.Here, be tmm at the thickness that makes partition wall 34, make the height of partition wall be hmm, make pipe as the size of the thickness direction of pipe for flowing of refrigerant 13 highly under the situation of Hmm, preferred, satisfy the relation of 0.1≤t≤0.4,0.64≤h/H≤0.86.In addition, be n in the quantity of the partition wall that makes pipe for flowing of refrigerant 13 34, to make the width of pipe for flowing of refrigerant 13 be under the situation of Wmm, preferred, satisfy 0.07≤(relation of n * t)/W≤0.31.Have again, preferred, the pipe height H=12~25mm of pipe for flowing of refrigerant 13, the width W=1.3~3.0mm of pipe for flowing of refrigerant 13.
In a plurality of, the non-conterminous ventilation gap 15 of the part in whole ventilation gaps 15, the aluminum cool storage material container 16 of having enclosed cool storage material (omitting diagram) is configured to cross over respectively organizes 14 front and back two-system refrigerant flow siphunculus 13.In addition; In remaining ventilation gap 15, have undulatory outside heat sink 17 that the aluminium brazing sheet of solder layer constituted on the two sides and be configured to cross over and respectively organize 14 front and back two-system refrigerant flow siphunculus 13 to be brazed in the front and back two-system refrigerant flow siphunculus 13 of the group 14 that constitutes the left and right sides that forms ventilation gap 15.That is, in the ventilation gap 15 of the both sides of the ventilation gap that disposes cool storage material container 16 15, dispose outside heat sink 17 respectively.In addition; The outside of the group 14 of the pipe for flowing of refrigerant 13 of right ends also dispose the outside heat sink that the aluminium brazing sheet constituted 17 that has solder layer on the two sides and its be brazed in before and after two-system refrigerant flow siphunculus 13; Have again, dispose aluminum side plate 18 and it is brazed in outside heat sink 17 in the outside of the outside heat sink 17 of right ends.
As shown in Figures 2 and 3, cool storage material container 16 possesses: be positioned at than the cephalolateral margin of front side pipe for flowing of refrigerant 13 and lean on the place, rear and cross over the pipe for flowing of refrigerant 13 of respectively organizing 14 front and back and the container body portion 21 of soldering; Be arranged to link to each other and than the cephalolateral margin of front side pipe for flowing of refrigerant 13 (downstream) outside extension 22 of stretching out forwards with the forward edge of container body portion 21.The size of the thickness direction (left and right directions) of the container body portion 21 of cool storage material container 16 equates on the whole.The outside extension 22 of cool storage material container 16; The size of its above-below direction equates with the size of the above-below direction of container body portion 21; And the size of the left and right directions of the size container main part 21 of left and right directions is big, with respect to container body portion 21 to the left and right the direction outside (the orientation outside of pipe for flowing of refrigerant 13) bloat.The size of left and right directions of outside extension 22, with the size of the left and right directions of the container body portion 21 that on pipe height, adds cool storage material container 16 as the size of the thickness direction (left and right directions) of pipe for flowing of refrigerant 13 height equate.As the cool storage material of in cool storage material container 16, filling, for example can using, freezing point is adjusted to the paraffin series latent-heat storage material about 5~10 ℃.Particularly, can use pentadecane, the tetradecane etc.In addition, the loading of cool storage material in cool storage material container 16 can be made as near the amount of in cool storage material container 16, filling till the upper end.For example, preferred, be 70~90%, 70~80% more preferably as the cool storage material filling rate with respect to the ratio of the internal volume of cool storage material container 16 of the cool storage material of having enclosed.Have, this cool storage material filling rate is the filling rate under the normal temperature again.
Be preferably 70~90% as the volume of the cool storage material of having enclosed with respect to the cool storage material filling rate of the ratio of the internal volume of one in the cool storage material container 16 airtight inner space 16a; Its reason is; After computer Simulation, can obtain Fig. 4 and result shown in Figure 5.
Computer Simulation shown in Figure 4; Through using pentadecane to be used as cool storage material; Making the environment temperature of (initially) when enclosing is 20 ℃, makes for the variation of ambient temperature of the cool storage material filling rate in the cool storage material container 16, configuration cool storage material container to carry out.
Computer Simulation shown in Figure 5 is used as cool storage material through using pentadecane, is that 25 ℃, relative humidity (RH) are 50%, the upstream side air quantity of the evaporimeter 1 of band cool storage function is 200m in the air side temperature of band cool storage function evaporimeter 1
3Under the condition of/h, make to change and carry out for the cool storage material filling rates in the cool storage material container 16.
The transverse axis of curve map shown in Figure 4 has represented to dispose the environment temperature of cool storage material container 16, and the longitudinal axis is represented the internal pressure of cool storage material container 16.In addition, the cool storage materials that the transverse axis of Fig. 5 is illustrated in the cool storage material container 16 are accumulated necessary cold and hot required cool-storage time, and the longitudinal axis representes that the cool storage materials in the cool storage material container 16 emit the cold and hot cool time of putting of necessary amount.
Can know from the curve map of Fig. 4; Even under 90 ℃ the environment temperature that surpasses as the regional upper limit of the common serviceability temperature of the motorcar air conditioner that possesses the evaporimeter 1 of being with cool storage function; Being the situation below 90%, also can prevent the rapid rising of internal pressure for the cool storage material filling rate in the cool storage material container 16.In addition, can know from curve map shown in Figure 5, necessary when putting cool time T in order to obtain with short cool-storage time, need be more than 70% for the cool storage material filling rates in the cool storage material container 16.
Cool storage material container 16 is made up of the aluminium sheet 24,25 of two cardinal principle lengthwise square configuration, and punch process forms this aluminium sheet 24,25 and circumference has carried out soldering each other through the aluminium brazing sheet that has solder layer on the two sides is implemented.The part that will form container body portion 21 on the aluminium sheet 24 on the right side that constitutes cool storage material container 16, i.e. major part except front part; Be provided with first bellying 26 that bloats to right-hand; Likewise; In the part that will form outside extension 22, be front part, in the length range of above-below direction, be provided with and be communicated with the front side of first protuberance 26 and to right-hand that bloat and bloat the second high bellying 27 of aspect ratio first bellying 26.In addition, the part of wanting soldering pipe for flowing of refrigerant 13 of the outer surface of the part that will form container body portion 21 of aluminium sheet 24 is formed with grid-like groove 28 on the right side.The aluminium sheet 25 that constitutes the left side of cool storage material container 16 be with right side aluminium sheet 24 reversed left to right and aluminium sheet, to the identical Reference numeral of same section mark.
And, through with two aluminium sheets 24,25 so that the opening mode respect to one another of first and second protuberances 26,27 makes up soldering, formed cool storage material container 16.Here, first bellying 26 through two aluminium sheets 24,25 has formed container body portion 21, extension 22 outside having formed through second bellying 27.
In cool storage material container 16, in the roughly whole scope of above-below direction, dispose from the aluminum inner fin 29 of the leading section of rearward end extension 22 of container main part 21 to the outside.Inner fin 29 is by upwardly extending crest portion, upwardly extending trough portion and connecting portion that trough portion is connected with trough portion constitute in front and back corrugated in front and back.The fin height of inner fin 29 equates on the whole, is brazed in the left and right sides wall inner face of the container body portion 21 of cool storage material container 16.
Outside heat sink 17 is by upwardly extending crest portion, upwardly extending trough portion and connecting portion that trough portion is connected with trough portion constitute in front and back corrugated in front and back.Outside heat sink 17 possesses: the cephalolateral margin that is positioned at than front side pipe for flowing of refrigerant 13 leans on place, rear and the heat sink body portion 31 of soldering on the pipe for flowing of refrigerant 13 of the front and back of each group 14; Be arranged to link to each other and than the cephalolateral margin of rear side pipe for flowing of refrigerant 13 (the direction of ventilation outside) outside extension 32 of stretching out forwards with the cephalolateral margin of heat sink body portion 31.And, the outside extension 32 of the outside heat sink 17 that in two of the ventilation gap that disposes cool storage material container 16 15 adjacent ventilation gaps 15, is disposed, the left and right sides face of soldering extension 22 in the outside of cool storage material container 16.In addition, 32 of extensions dispose aluminum separator 35 in the outside of adjacent outside heat sink 17, and its soldering is on outside extension 32.
The evaporimeter 1 of above-mentioned band cool storage function and engine with vehicle be the compressor of drive source, the refrigerant cools that will discharge from compressor condenser (refrigerant cooler), make the expansion valve (pressure reducer) of the cold-producing medium decompression of having passed through condenser together constitute freeze cycle, be loaded into as motorcar air conditioner and make when the parking vehicle that the engine as the drive source of compressor temporarily stops for example on the automobile.And; Under the situation of compressor operating; The two-phase system cryogen of the gas-liquid mixed phase by compressor compresses through the low pressure behind condenser and the expansion valve gets into through refrigerant inlet 7 in the refrigerant inlet header portion 5 of the evaporimeter 1 of being with cool storage function, and the full pipe for flowing of refrigerant 13 through the front side flows in the first intermediate header portion 9.Get into the cold-producing medium in the first intermediate header portion 9, get into the second intermediate header portion 11 in through communication means 12 after, the full pipe for flowing of refrigerant 13 through rear side flows in the outlet header portion 6, and from refrigerant outlet 8 outflows.And cold-producing medium carries out heat exchange with air through ventilation gap 15 in pipe for flowing of refrigerant 13 between flow periods, makes cold-producing medium become gas phase and flows out.
At this moment; Cold-producing medium through in pipe for flowing of refrigerant 13, flowing cools off the cool storage material in the container body portion 21 of cool storage material container 16; And the cool storage material in chilled cool storage material had the cold and hot outside extension 22 that is passed to cool storage material container 16 through inner fin 29 in the container body portion 21; Again by through ventilation gap 15 by refrigerant cools air with the cooling of the cool storage materials in the outside extension of cool storage material container 16 22; Its result accumulates cold and hot in cool storage material container 16 in the cool storage material of integral body.
Under the situation that compressor stops, in the container body portion of cool storage material container 16 21 and the outside extension 22 that cool storage material had was cold and hot, be passed to the left and right sides wall of container body portion 21 and outside extension 22 through inner fin 29.Be passed to left and right sides wall cold and hot of container body portion 21, through pipe for flowing of refrigerant 13 and on this pipe for flowing of refrigerant 13 outside heat sink 17 of soldering heat sink body portion 31 and be passed to air through ventilation gap 15.Be passed to left and right sides wall cold and hot of outside extension 22, be passed to air through ventilation gap 15 through the outside extension 32 of the outside heat sink 17 of the left and right sides face soldering of extension 22 in the outside.Therefore, even rise through the temperature of the wind behind the evaporimeter 1, this wind is cooled, thereby also can prevent the rapid decline of refrigerating capacity.
As stated, be under the situation of tmm at the thickness of the partition wall that makes pipe for flowing of refrigerant 13 34, be preferably 0.1≤t≤0.4, this is because after carrying out computer Simulation, obtained Fig. 6 and result shown in Figure 7.This computer Simulation, likewise makes the quantity n=13 of its pipe height H=1.4mm, partition wall 34 at the width W=16.95mm through making pipe for flowing of refrigerant 13, the thickness t of partition wall 34 is changed carry out.
The longitudinal axis in the left side of curve map shown in Figure 6 is illustrated in that compressor stops and cool storage material from cool storage material container 16 is emitted cold and hot mean temperature of putting when cold through the wind behind the heat exchange core 4.The longitudinal axis in the left side of curve map shown in Figure 7 is illustrated in compressor operating and cool storage material in cool storage material container 16 when accumulating cold and hot cold-storage, the outside heat sink 17 that from the adjacent ventilation gap 15 of the ventilation gap 15 that disposing cool storage material container 16, disposed are delivered to the mobile cold and hot amount of cool storage material container 16 through pipe for flowing of refrigerant 13.In addition; The longitudinal axis on the right side of Fig. 6 and curve map shown in Figure 7 is illustrated in that compressor stops and cool storage material from cool storage material container 16 is emitted and cold and hot put when cold, is delivered to the mobile cold and hot amount of the outside heat sink 17 that the adjacent ventilation gap 15 of the ventilation gap that disposes cool storage material container 16 15, is disposed through pipe for flowing of refrigerant 13 from cool storage material container 16.Can know from curve map shown in Figure 6, make that put when cold scope that mean temperature through the wind behind the heat exchange core 4 descends efficiently is that the thickness of partition wall 34 is the scope of 0.1~0.4mm.If the thickness of partition wall 34 surpasses 0.4mm, then the degree of the decline of above-mentioned mean temperature flattens slow.In addition; Can know from curve map shown in Figure 7; When cold-storage;, cold-storage function admirable many through the mobile cold and hot amount that pipe for flowing of refrigerant 13 is delivered to cool storage material container 16 from the outside heat sink 17 that the adjacent ventilation gap 15 of the ventilation gap that disposes cool storage material container 16 15, is disposed, and, putting when cold; Is that the thickness of partition wall 34 is the scope of 0.1~0.4mm from cool storage material container 16 through the mobile cold and hot amount scopes many, that put cold function admirable that pipe for flowing of refrigerant 13 is delivered to the outside heat sink 17 that the adjacent ventilation gap 15 of the ventilation gap that disposes cool storage material container 16 15, is disposed.Have, the big reason of the following 0.1mm of being limited to that makes the thickness t of partition wall 34 is if thinner then be difficult to manufacturing than this again.
In addition, make the pipe as the size of the thickness direction of pipe for flowing of refrigerant 13 highly be Hmm, the height that makes partition wall is under the situation of hmm; Be preferably 0.64≤h/H≤0.86; This is because after carrying out computer Simulation, obtain Fig. 8 and result shown in Figure 9.This computer Simulation; Width W=16.95mm through making pipe for flowing of refrigerant 13, likewise manage the quantity n=13 of height H=1.4mm, partition wall 34, the thickness t=0.2mm of partition wall 34, the height h of partition wall 34 is carried out with respect to the rate of change of pipe height H.
The longitudinal axis in the left side of curve map shown in Figure 8 representes, compressor stop and cool storage material from cool storage material container 16 emit cold and hot put when cold, mean temperature through the wind behind the heat exchange core 4.The longitudinal axis in the left side of curve map shown in Figure 9 representes, the outside heat sink 17 that in compressor operating and during the cold and hot cold-storage of the savings of the cool storage material in cool storage material container 16, from the adjacent ventilation gap 15 of the ventilation gap 15 that disposing cool storage material container 16, is disposed is delivered to the mobile cold and hot amount of cool storage material container 16 through pipe for flowing of refrigerant 13.In addition; The longitudinal axis on the right side of Fig. 8 and curve map shown in Figure 9 representes, stops and cool storage material from cool storage material container 16 is emitted and cold and hot put when cold, is delivered to the mobile cold and hot amount of the outside heat sink 17 that is disposed the adjacent ventilation gap 15 of the ventilation gap 15 that is disposing cool storage material container 16 through pipe for flowing of refrigerant 13 from cool storage material container 16 at compressor.Can know that from curve map shown in Figure 8 making and putting when cold the scope that mean temperature through the wind behind the heat exchange core 4 descends efficiently is that above-mentioned ratio h/H is 0.64~0.86 scope.If above-mentioned ratio less than 0.64, then the degree of the decline of above-mentioned mean temperature flattens slow.In addition; Can know from curve map shown in Figure 9; When cold-storage;, cold-storage function admirable many through the mobile cold and hot amount that pipe for flowing of refrigerant 13 is delivered to cool storage material container 16 from the outside heat sink 17 that the adjacent ventilation gap 15 of the ventilation gap that disposes cool storage material container 16 15, is disposed, and, putting when cold; Is that above-mentioned ratio h/H is 0.64~0.86 scope from cool storage material container 16 through the mobile cold and hot amount scopes many, that put cold function admirable that pipe for flowing of refrigerant 13 is delivered to the outside heat sink 17 that the adjacent ventilation gap 15 of the ventilation gap that disposes cool storage material container 16 15, is disposed.Have again, make above-mentioned ratio h/H on be limited to 0.86mm big reason be if surpass this value then be difficult to manufacturing.
In the above-described embodiment, the pipe for flowing of refrigerant of evaporimeter of band cool storage function also can be same with the situation of so-called stack Type evaporator, is arranged to through making two aluminium sheets relatively with the circumference flat ducted body that forms of soldering each other.That is also can be between two aluminium sheets that constitute flat ducted body, to form the pipe for flowing of refrigerant that bloats shape.
The evaporimeter 1 of above-mentioned band cool storage function tilted configuration sometimes becomes, and the pipe for flowing of refrigerant 13 of heat exchange core 4 and the upper end of cool storage material container 16 more by the upstream side or the downstream of direction of ventilation, are for example more leaned on upstream side than the lower end.Under this situation; Preferably; The liquid level of the cool storage material in the cool storage material container 16 that tilts; Be positioned at the height part of lower end 90% or more from the plumb height of the incline direction side edge part of cool storage material container 16, more preferably, the liquid level of the cool storage material that the cool storage material container of inclination 16 is interior is positioned at the upper end of plumb height of the incline direction side edge part of cool storage material container 16.
Figure 10~Figure 12 representes cool storage material distortion of vessel example.
Under the situation of cool storage material container 40 shown in Figure 10, be arranged to link to each other with the cephalolateral margin of container body portion 21 and than the cephalolateral margin of front side pipe for flowing of refrigerant 13 forwards (downstream) outside extension 41 of stretching out comprise: the base portion 42 that the above-below direction of the size of above-below direction and left and right directions and container body portion 21 and the size of left and right directions equate; And on base portion 42, on above-below direction, leave that the compartment of terrain is provided with and with respect to base portion 42 a plurality of protuberances 43 of bloating of the direction outside to the left and right.Protuberance 43 is elliptical shapes, is viewed as from the left and right directions outside towards the place ahead, downward-sloping.The size of the left and right directions of the protuberance 43 of outside extension 41 with the size of the left and right directions of the container body portion 21 that on pipe height, adds cool storage material container 40 as the size of the left and right directions of pipe for flowing of refrigerant 13 must height equate.
The outstanding end face of the protuberance 43 of outside extension 32 solderings extension 41 of outside heat sink 17 in the outside.
In the part that will form container body portion 21 of the aluminium sheet 24 on the right side that constitutes cool storage material container 40, i.e. major part except front part, be provided with first bellying 26 that bloats to the right.In addition; In the part that will form outside extension 41 of the aluminium sheet 24 on right side, be front part; In the length range of above-below direction, be provided with link to each other with the front side of first bellying 26 and bloat to the right and bloat second bellying 44 that height equates with first bellying 26; Have again,, above-mentionedly bloat roof distortion and on above-below direction, leave the compartment of terrain and be provided with a plurality of the 3rd bellyings 45 that bloat to the right with respect to second bellying 44 through making at the roof that bloats of second bellying 44.The aluminium sheet 25 that constitutes the left side of cool storage material container 40 be with right side aluminium sheet 24 reversed left to right and aluminium sheet, to the identical Reference numeral of same section mark.
Other formations are identical with the cool storage material container 16 of above-mentioned embodiment.
Under the situation of cool storage material container 50 shown in Figure 11, portion within it disposes the aluminum inner fin 51 of biasing shape that arrives the leading section of outside extension 22 from the rearward end of container main part 21 in the cardinal principle entire scope of above-below direction.Inner fin 51 forms through on direction of ventilation, arranging a plurality of wavy band plates 52 and their mutual one being connected; This wavy band plate 52 has the 52a of crest portion that go up to extend at fore-and-aft direction (direction of ventilation), in front and back upwardly extending trough 52b of portion and connecting portion 52c that the 52a of crest portion is connected with the 52b of trough portion, the 52a of crest portion of two adjacent on fore-and-aft direction band plates 52 each other with the 52b of trough portion each other on above-below direction the position stagger.
Other formations are identical with the cool storage material container 16 of above-mentioned embodiment.
Under the situation of cool storage material container 60 shown in Figure 12; Lean on the part of upstream side at the downside of container body portion 21 and than the pars intermedia in the gap of 13 of front and back two-system refrigerant flow siphunculus, be provided with the internal volume minimizing portion 61 that is out of shape the internal volume that forms and reduce cool storage material container 60 through the left and right sides wall that makes cool storage material container 60 to the inside.The size of the left and right directions of the size container main part 21 of the left and right directions of internal volume minimizing portion 61 is little, the internal volume of cool storage material container 60 be assumed to the situation that internal volume minimizing portion 61 is not set and compare and diminish.The internal volume amount of confirming the internal volume minimizing portion 61 of cool storage material container 60 and reducing; Even make that at the cool storage material filling rate (volume of the cool storage material of having enclosed is with respect to the ratio of the internal volume of the airtight inner space of cool storage material container 60) that is assumed under the situation that thickness that the situation that internal volume minimizing portion 61 is not set promptly is being assumed to the left and right directions of container body portion 21 equates on the whole be 70~90%; Be preferably 70~80%, cool storage material is existed near the upper end of cool storage material container 60.
Internal volume minimizing portion 61 is that the roof 26a that bloats through first bellying 26 that makes two aluminium sheets 24,25 that constitute cool storage material container 16 caves in to the inside and forms depressed part 62 and be provided with.
In addition, at the position that is provided with internal volume minimizing portion 61, inner fin 29 is out of shape with the mode of buckling, and the intensity of the part that is provided with internal volume minimizing portion 61 of cool storage material container 60 descends.But; The intensity of cool storage material container 60 is designed to; In common environment for use temperature range scope for example-40~90 ℃; Thereby even the cool storage material variable density of liquid phase state and since in cool storage material container 60 residual air thermal expansion press liter in making, intensity that also can be damaged.
Cool storage material container 60, in the ratio internal volume minimizing portion 61 of container body portion 21 part and the part that is connected with the pipe for flowing of refrigerant 13 of front side on the front, soldering is on pipe for flowing of refrigerant 13 in the overall height scope.