TW200301815A - Heat exchanger for providing supercritical cooling of a working fluid in a transcritical cooling cycle - Google Patents

Abstract

A heat exchanger (10) preferably provides supercritical cooling to the refrigerant of a transcritical cooling system (12). The heat exchanger (10) includes a pair of elongated headers (20, 22) having longitudinal axes (24, 26) disposed substantially parallel to each other, a plurality of elongated tubes (28) spaced in side-by-side relation along the longitudinal axes (24, 26) of the headers (20, 22), and serpentine fins (30) extending between adjacent pairs of the tubes. Each of the tubes (28) has a first end (31) connected to the header (20) and a second end (32) connected to the other header (22) (20, 22). Each of the tubes (28) is folded upon itself to define at least two parallel legs (36) of the tubes (28) so that the refrigerant flows serially through at least two parallel fluid passes (38) from the header (20) to the header (22). Each of the tubes (28) has a flattened cross-section, and the parallel legs (36) of each of the tubes (28) are preferably spaced from each other, with the major dimension D of each of the parallel legs lying in a common plane. Preferably, each of the serpentine fins (30) has a transverse width W extending across the parallel legs (36) of the adjacent tubes (28). Each of the fins (30) includes a plurality of alternating tabs (40) and elongated separations (42) extending parallel to the parallel legs (36) and located between the parallel legs (36) of the adjacent tubes (28) to divide the width W of each fin (30) into two or more discrete fin elements (44) that are connected to each other by the tabs (40). Each of the fin elements (44) corresponds to and extends along one of the parallel legs (36) of each of the adjacent tubes (28).

Description

200301815 ⑴ 玖, the description of the invention shall be described in the month. The technical field to which the invention belongs, the prior art, the content, the embodiments and the drawings briefly describe the scope of the invention > This month is about a heat exchanger 'and more specifically a In transcritical cold heart ;! Bad towels provide a cry for teaching exchange of supercritical cooling of jade fluid. BACKGROUND OF THE INVENTION '' A common type of heat exchanger includes a so-called "core portion" consisting of a plurality of tubes and a plurality of interconnected two heat fins. The first-class system passes through the core parts, and a second fluid passes through the core itself in the space between the fins and the pipes. Typically, the opposite ends of these fittings are ❹-parallel manifolds or "slots", and where-the manifolds are an input manifold and the other manifold is an output manifold to separate the One of these fluid guides leads in and out of the pipes. The general heat exchanger can be used for various purposes such as radiators, condensers, evaporators, charge air coolers, oil coolers, etc., and these can be used in vehicles. One common type of this type of heat exchanger is a known parallel flow heat exchanger, in which a plurality of flat, porous tubes guide the refrigerant through the heat exchanger. Typically, the flat tubes are straight 'and the manifolds are spaced from each other on opposite side ends of the heat exchanger to receive the opposite ends of the tubes. However, it is known to bend these flat fittings such that each of these fittings is formed into a so-called "lost-type" fitting with two parallel legs, and wherein the wheel-in and output manifolds are positioned adjacent to each other to Receive the ends of these fittings. This structure is shown in U.S. Patent No. 5,531,268 issued to Hoshin, et al. Although the structure shown in Patent No. 5,53 1,268 is applicable to its purpose, there is still room for improvement (2) (2) 200301815. In addition, this structure is not suitable or most suitable for use in certain air-conditioning systems that rely on high operating pressures. These systems are, for example, one of the refrigerants required to provide supercritical cooling carbon dioxide (CO2). A transcritical cooling cycle of the cooler. The increasing environmental problems caused by the use of many white refrigerants such as CFC12 and HFC134a, which has a lesser impact, have led to the need to consider transboundary carbon dioxide systems, especially in vehicle applications. First of all, the carbon dioxide used as a refrigerant in this system is initially taken from the atmosphere, so when it is leaked back to the atmosphere from the system, it will not cause a net increase in nitric oxide in the atmosphere. In addition, although carbon dioxide is unwelcome from the perspective of the greenhouse effect, it will not affect the ozone layer and will not enhance the greenhouse effect because it does not cause a net increase in the carbon dioxide content in the atmosphere due to leakage. SUMMARY OF THE INVENTION The main object of the present invention is to provide a novel and improved heat exchanger. Another object of the present invention is to provide an improved exchanger suitable for supercritical cooling-working fluid in a transcritical cooling cycle. 7. One of the instructions indicates that a specific embodiment can be used to achieve some of the other objectives by using a heat exchanger that provides supercritical cooling of the working fluid in a transcritical cooling cycle%. The heat exchanger includes a pair of elongated tube headers having longitudinal axes arranged substantially parallel to each other, and a plurality of thin, along side-to-side relationships along the longitudinal axis of the 箄 f 箄 ^^ mesh. Spaced from each other, where the mother-of-pipe fittings are bent upwards to define at least two parallel legs of the pipe-fitting, such that the working fluid flows from one of the pipe headers to the other (3) 200301815

Qichi Earthly Flow passes through at least two levels of protection s β4 and several snake-shaped curved heat dissipation months' extending between Xiang Zou Zhicheng and these pipes, Bi Ri Shi τ — each of these heat dissipation ... I :: "" Τ extends parallel to the legs of these adjacent fittings-the length. Each of these fittings has a flat, "&" material section "and the section has a long dimension and one: two female-the" The lengths of the parallel legs of the pieces are located in a common plane with the tube sets σ / A aik ^ and. Each-the fittings have one end connected to one of the H wood phases, and connected to

s-phase-second end to transfer the working fluid between the two. The pattern t 'each has a serpentine curved heat sink having a lateral width extending across the parallel legs of the adjacent member. Each of these scattered pieces includes a plurality of staggered fins and elongated points extending parallel to the parallel legs, and the fins and separators are provided on the parallel legs of the adjacent pipe pieces to The width of the female heat sink is divided into a plurality of discrete heat sink elements connected to each other by the wings. Each of these heat sink components is j

One of the two adjacent pipe fittings-the parallel legs corresponding to and extending along the 00 type, the parallel legs of each of these pipe fittings are spaced from each other. In one mile type, each of these pipe fittings is bent upwards at least twice, meaning at least two parallel legs of a 4 g piece, so that the working fluid continuously supports k from a certain official name to another Three parallel fluid channels. In the type, each of these pipe fittings is a porous pipe fitting, and the pipe 4 has a hydraulic pressure ranging from 0.015 to G._English pair. ^ In the formula, the length of each such fitting is not more than 0.500 inches -10- (4) 200301815

And its short size is not more than 0.100 inches. In the type of sheet one, 'each-the fins have from one of the adjacent pipe fittings and are parallel to the longitudinal direction of the headers: two to = height' and the length of the pipe fittings does not exceed that one. In the type, each of these pipe fittings has a long dimension τ, extending from the end of the pipe fitting to the pipe header, parallel to the longitudinal axis of the pipe header. Other purposes and advantages will become apparent from the following description combined with the accompanying drawings. Brief Description of Drawings Cooling: Figure 1 is a schematic front view of a heat exchanger embodying the present invention; Figure 2 is a front view of the heat exchanger shown in Figure 1; Figure 3 is a view of Figure 2 Side view of the heat exchanger; Figure 4 is a top view of the heat exchanger shown in Figure 2; Figure 5 is an enlarged, partial section taken along the line 5-5 in Figure 3; Figure 6 is applied to Figures 丨 to 5 FIG. 7 is an enlarged view of a tube of a heat exchanger shown and used in a local exchanger. FIG. 7 shows a perspective view of a tube and a heat sink in the embodiment of the present invention. Description of the preferred embodiment, with reference to Fig. 1 ', which shows a basic cooling system 12 for generating a transcritical cooling cycle and a heat exchanger 10 embodying the present invention. Figure = The heat exchanger 10 is a gas cooler type 13, which can be used in heat exchange 200301815

(5) Device ii) On the side of the heat sink, the heat is discharged to a medium such as an air flow A, and the working system 12 such as carbon dioxide or a cooling medium of the cooling system 12 is provided with ultra-critical cooling. The cooling system 12 includes a heat exchanger 10, which compresses a gaseous refrigerant to a supercritical pressure to be transported to a compressor M of the thermal parent state i 0, and reduces the pressure of the refrigerant received from the heat exchanger 10 such that at least some These refrigerants enter the liquid-expansion device 16, an evaporator 17, an evaporator 18 (optionally) that transfers heat from a medium to the refrigerant to change the refrigerant from a liquid state to a gaseous state, and The refrigerant discharged from the heat exchanger 10 is transferred to the refrigerant discharged from the evaporation evaporator 17 or, if an accumulator 8 is used, it is also transferred to one of the suction pipe heat exchangers 19. It should be understood that the use of heat exchange can be found in other types of cooling systems and other cold section system configurations that implement a transcritical cooling cycle, and is not limited to the use of the specific cooling system shown in Figure 丨. Unless specifically mentioned in the scope of the patent application. Moreover, although the disclosed heat exchanger 10 can provide significant advantages when used as a gas cooler 13, its advantages can also be exhibited when used as other uses such as a condenser or an evaporator, regardless of whether it is related to a Transcritical cooling cycle. Referring to FIGS. 2 to 4, the heat exchanger 10 includes a pair of elongated tube headers-0 and 22, respectively having longitudinal axes 24 and 26 and substantially parallel to each other, and a plurality of elongated tube pieces. 28, spaced side-to-side along the longitudinal axis 24, 26 of the tube city phase 20, 22; and a plurality of serpentine 'coqu heat sinks 30, extending between adjacent pairs of pipe pieces 28 . It should be understood that in the specific embodiment shown in the figure, each heat sink 30 extends one of the length L of the tube member 28, but the body is not shown in FIG. 2 for convenience of explanation.

(6) The middle part of the length. Preferably, the heat sink 30 has a vent hole. As shown in FIG. 3, each of the tube pieces 28 has a first end 31 connected to the tube header 20 and a second end 32 connected to the tube header 22 so as to be between the tube headers 20 and 22. Transfer refrigerant from time to time. Each member 28 has a flat cross section, and the cross section has a long dimension 0 and a short dimension d, as shown most clearly in FIG. 5. Each tube member 28 is preferably a perforated official member, and in a preferred embodiment is a perforated tube member having a hydraulic diameter ranging from 0.015 inch to 0.045 inch. It should be understood that although six orifices 34 are shown in FIG. 5, in some applications, it may be advantageous for each porous tube 28 to include more than or less than six orifices 34. . For example, in a preferred embodiment, each of these fittings has four orifices 34. In a preferred embodiment, the parts are configured to withstand a burst pressure of at least 6500 pounds per square inch (ps0) at an ambient temperature of 70 °, which is referred to as a transcritical carbon dioxide cooling. Required for one of the gas coolers in the system. Preferably, the length of each tube 28 is generally not more than 0500 inches, and the short dimension d is generally not more than 0 "00 inches. In some excellent embodiments, the short dimension d is generally not more than 0.060 inches, and the long dimension D is generally not more than 0 ^ 20 inches. In this regard, reducing the long dimension D may provide a large number of Advantages. For example, since each tube 28 includes at least two parallel legs 36, changing the depth of the hot parent to 10 will highly depend on the size of the long dimension D and will decrease as the long dimension D decreases. Furthermore, the tube set The diameter of the boxes 20 and 22 can be at the end of the pipe, and the length of the long dimension D1 and j2 is a structure that extends longitudinally from the longitudinal axis 24 and 26 of the pipe header 20, 22, instead of the figure 丨 to FIG. 4 -13-200301815 less in the parallel structure shown, and wherein the long dimension is at the ends 31, 32 with the longitudinal axes It connects to the official header box 20 and 22 at the intersection. In addition, the length of the tube header box 20, "can be at the end of the pipe as shown in Fig. 1 to Fig. 4 32 long D parallel tube header box 20, 22 The length of the longitudinal axis 24, 26 is reduced in a structure. Finally, in some preferred implementations, the long size_small may allow heat dissipation # the height is reduced. However it should be understood that 'larger heat sink heights can provide information about Advantages of air-side efficiency. As shown most clearly in Figs. 3, 4, and 6, each tube 2δ itself is bent upwards to define at least two tube pieces 28 parallel legs%, so that the refrigerant from the tube header 20 Continuously flows to the header manifold 22 via at least two parallel fluid channels 38. In this connection, it is better to select the input and output header headers ", 22", so that when the heat exchanger 10 is used as a gas cooler, it will The fluid flow on the fin side of the heat exchanger 10 is intersected _ countercurrent configuration operation. Each pair of parallel legs is twisted 90 relative to the leg 36 at a bend point 39. The test point 39 And the joint is made, so that the long dimension D is parallel to the axis at the bending point 39, and is not horizontal. Extending crosswise. Preferably, the bending point 39 is obtained by first twisting the leg portion 36 9 at the bending point 39 relative to the tube 28, and then bending the tube at the bending point 39 by about 80. The bending point% is formed, and it must be formed. In this connection, it should be understood that each leg 36 is 90% of the bending point 39. According to what configuration the torsion system can provide the heat exchanger 10 with the most advantages for special applications, 3 and FIG. 6 are the same or opposite directions. As shown most clearly in FIG. 6, the parallel legs 36 of each tube 28 are preferably spaced a distance χ from each other, and the distance is parallel to each The length D of the leg% is located in a common plane, which is indicated by the dashed line P in FIG. 2 and FIG. 5 and is substantially the same as the longitudinal axis 24, 26 of the header box 20, 22 -14- 200301815 ⑻. Crosswise again. This will allow the long beta disk medium to extend in parallel through the flow direction of the heat sink 30. Since the temperature of the refrigerant can be changed as it flows from the header 20 to the header 22 through the tube 28, when the heat exchanger 10 is providing supercritical cooling, the distance X is reduced by The heat conduction from one leg to the other will be better. The brazing material can be used to make the distance χ during the brazing welding exchange for 10, which is sufficient to prevent the space between the adjacent parallel legs% from closing or ㈣ ^ Minimize 'but not too large and excessively increase the depth of the heat exchanger M. The adjacent parallel legs 36 of the tube members 28 are preferably spaced apart from each other, but in some applications this spacing is not required and / or undesirable. As shown in Figures 1 to 5, 'Each fin 30 has the same distance between the adjacent fins 28-the fin height H, that is, the fin height η is from it-the fins 28 are parallel to the tube set. Boxes 20, 22 longitudinal axes 24, 28 extend to-adjacent pipe 28. Preferably, the length 0 of the tube member 28 should not exceed the height of the loose piece Η. This will allow each end of the tube 3 to 32 to be twisted 90 relative to the parallel cymbal. And the ends of these pipe fittings will begin to extend from this-the structure, so that the ends Η, 32 of the long size Dm towels, shown at the ends of the pipe fittings M and η and the pipe headers 20 and 22 are parallel to the pipe header 2 (), 22 vertical Han ^, 26 extended. This is very important in high pressure applications such as gas coolers used in transcritical refrigerant systems, where it is desirable that the headers 20, 22 have a diameter as small as possible. & The long dimension 0 in the structure is' expectedly, even just larger than the inner diameter of the Ren-tube header 20,24. By allowing the long dimension D to extend parallel to the longitudinal headers 24, 26 of the headers 20, 22 at the ends of the headers 3 1, 32 and the headers 2G, 22, the length of each header 28! ) Will be larger than any tube (9) (9) 200301815

Collector inner diameter of 20,22. Although the long dimensions of the end 31, 32 of the fitting 〇 preferably extend parallel to the longitudinal axis 24, 26 of the header 20, 22 where the end 3i, 32 of the fitting is connected to the header 20, 22, but in some applications , Long ruler + D with other orientations at these positions may be better. For example, in some applications, the long dimension D of the end pieces 31, 32 is at the junction of the end pieces 31, 32 and the headers ⑼, 22, and preferably extends transversely to the longitudinal axis by%. As discussed above, each serpentine curved heat sink 30 has a length L that extends parallel to the parallel legs 36 of the adjacent tube 28, and extends across the parallel legs 36 of the adjacent tube 28 as best shown in the clock A lateral width w. For the convenience of explanation, FIG. 5 shows three leg portions of the tube 28 and Tu Ling does not show a heat sink 30 used in combination with a heat exchanger structure 10. Each tube 28 in the bean has only two parallel Legs 36. Please refer to FIG. 7, each heat sink 30 includes a plurality of staggered fins 42 extending parallel to the parallel legs 36 and located between the parallel legs of the stern tube, so as to provide visibility of each heat sink 30. The W-blade is cut into two or more discrete fin strips or elements 44 interconnected by the fins 40. Each of the heat sink element materials is arranged in parallel to each of the adjacent tube pieces 28-parallel legs 36 and extends along it. The separating member 42 is substantially straight and has opposite edge centers facing each other, and substantially crosses the direction in which the medium flows through the heat sink. Although FIG. 7 does not show 'the heat sink 30 used for the pipe member 28 having two parallel legs 36', it should be understood that the structure including the fin 40, the separation member 42, and the heat dissipation element 44 in the above can be used. For example, in the structure shown in FIG. 2 to FIG. 5, every two: two pieces 28 each have a structure of the heat exchanger 10 having more than two parallel legs 36. In this structure, each fin 30 is preferably extended across all parallel legs 36 -16- (10) (10) 200301815

A heat sink element 44 extends along and extends along each parallel leg 36 of each adjacent pipe member 28, and a wing fin and a separator are provided between each heat sink element 44. The staggered fins 40 in each of the fins 30 are used to restrict the relative movement of the fin element materials to each other, so that during the assembly of the heat exchanger 10, each of the fin elements 30 remains as a single unit, and The fin elements 44 are kept aligned with each other to reduce the pressure drop on the fin side of the heat exchanger. The purpose of using the elongated separators 42 is to minimize the heat transfer from each parallel leg 36 of each tube 28 to any adjacent parallel leg 36 by interruption, and therefore the heat dissipation associated with each parallel leg 36 Heat transfer between chip components: minimized. In applications such as the gas cooler 13 shown in FIGS. 2 to 4, the temperature of the working fluid that does not “need” to enter the heat exchanger 10 is significantly different from the required temperature of the working fluid leaving the heat exchanger 10. There is a heat sink 30 (typically a heat sink with air vents) that does not have air vents. The total heat transfer of up to 400 / 〇 between parallel legs 36 will be conducted via these heat sinks, and therefore It will not be discharged into the air. In some cases, conducting heat received from the heat sink 30 on the hot side of the heat exchanger 10 will actually make the heat sink 30 on the cold side of the heat exchanger 10 pass through the cold Side 1 = The working fluid of element 28 is hotter, resulting in a poor condition in which heat is transferred back to the working fluid before it leaves the heat exchanger 10. Therefore, it is not desirable that each of the elongated separation elements 42 be along The heat sink 30 is extended as far as possible, and it is not desirable to minimize the number and size of the fins 40 to prevent: each-the heat sink element 44 is separated during assembly, and the heat sink element 44 needs to be separated from each other. A heat sink 30 is maintained during assembly An acceptable pair of forwards = 00 200301815

status. This configuration is provided with the 'wing piece 40 and the elongated separating member 42 which may be i 3. In the-the heat sink 30 is made of aluminum and the diffuser piece 3 (); ΐ

Put., Each of the elongated separation pieces 42 of the length 30 of the sheet 30 extending about 0 020 pairs of pairs and made of a gas 30 are along the non-traditional Sanjiao 2 body, = about 8. G Yingxin in the heat dissipation In other words, preferably, the separating member 42 has the heat sink 3 parallel to the unbent state. The body length extension, the length of one separator 42 to the length of the flaps are in the range of fine =. For example, as shown in Fig. 7, another-specific "-the slender separators 42 are all from a certain _ wing profile: :: extension _ 14 bends 46, and scattered j 4G continuous 叩 shape ... The piece 30 is at Bent

= Various types of fins can be formed since the separation piece 42, but the separation piece. The heat piece = is a cut or slit in the heat sink material without the need to be formed in the form of the two :, except for the heat sink material. One achieves this kind of slit or cuts the heat sink; ... two materials form a scatter-in the sheet 3. Cut into! ^ Disc ㈣ht, in order to dissipate heat. It can be eliminated in each rotation-small back circle, split to form the fins 40, and ensure that each of the heat sinks 30 is scattered: Two are connected to adjacent heat sink elements 44. This will be done in the heat sink 30 without damaging the surface of the heat sink.在 一个-Such thermal film elements :: 可 ί: 45 'are almost, but not completely, adjacent to each other. Scatter% brazing to each other during the brazing process-problem. One method of minimizing the problem is to set the steel welding material on the -18- (12) 200301815 side wall of the leg 36 adjacent to the heat sink 30, instead of coating the brazing material on the heat sink, and another way The method for minimizing the problem is to bias the adjacent heat sink element 44 of the heat sink 3Q away from the wing 40, so that the heat sink can be covered. Another method is to make the marginal bow formed by the slits slightly separated to form a very small air vent, which also allows the heat sink to be covered. Another

One method is to emboss each of the fin portions 40 to further separate the heat sink element 44 from each other. In addition, this last method allows covering the heat sink. Although the slit system is preferred, in some applications, it may be advantageous to form the separating member 42 as a groove that must be removed from the heat sink material 30%. In this connection, it is sufficient to make the grooves have a width parallel to the heat sink 30 width of one thousandth of an inch σ. The good heat sink 30 preferably includes the fins 40 and the separation members 44, but it is not desirable and / or required for the fins 40 and the separation members 42 in a certain application. The heat sink 30 preferably has a vent hole, and various types thereof are known. The exact arrangement of the vent holes is highly dependent on, for example, the fluid on the heat sink, the heat sink side, the available pressure drop on the heat sink side, the number of parallel legs 36 in each tube 28, and the number of each tube 28. There are odd or even parallel legs 36 depending on the particular application parameters. It should be understood that when used as one of the gas coolers in the system 12, the heat exchanger 10 will typically provide supercritical cooling refrigerant; however, there is still an operating state where the ambient temperature is below the critical temperature, the heat exchanger. 〇In this case, it will be used as a condenser to provide subcritical cooling refrigerant. As best shown in Figure 3, the heat exchanger 10 in the figure includes twelve parallel legs 36 of each tube 28. It should be understood, however, that each heat exchange -19- (13) 200301815

Depending on the particular parameters of the particular application, such as the enclosure and environment of the system 12, and the equipment in the air conditioning (AC) or heat pump system, it is desirable that each tube 28 has only the optimal number of parallel legs in the device 10 application. The working fluid, the heat exchanger 10 must encapsulate the function of the heat exchanger, that is, its use as a gas cooler, condenser, or evaporation. For example, in some applications, two or three parallel legs 36 may be used. Another option is to use 箪 __H ^ ^

Provide one or more baffle plates in one or two tube headers 20, 22 to guide the refrigerant self-propelled Chime & wood phase 20 through a certain combination of tube pieces 28 to tube Wei Yi 9 9 , Η ^ /, phase 22 and the receiver returns to the header box 20 through a different $ combination of one of the tube pieces 28, and following Ting private, one & 丄 ,, .fe, chewing 仃 and from a tube header + # ^, The number of channels with the same number of channels to another | where the number of channels is required to provide the specified performance per-special applications. In a preferred embodiment, the pipes 20, 22, the pipe fittings 28, and the heat sink 30 are free! g is made and brazed with a suitable brazing material. However should

Understand that in some applications, those made of other suitable materials can also be applied to those components specified by the parameters of the specific application. It should be understood that the heat exchangers ^ 〇 shown in Figures 1 to 3 are such that the longitudinal extractions 24, 26 of the headers 20, 22 extend in a horizontal direction, and the flat legs 36 of the tube 28 follow a It extends vertically, but in some applications, it is desirable for a heat exchanger 10 to have a different orientation, such as having the shafts 24 and 26 extend in a vertical direction and the parallel legs 36 extend in a horizontal direction. Furthermore, although the heat exchanger 10 tube headers 20 and 22 shown in Figs. 1 to 3 are provided on the same side of the heat exchanger ο, the tube header 20, 22 is provided on the opposite side of the heat exchanger 10. The headers 20 and 22 are located at this heat exchange -20- 200301815

(14) A structure on the same side of the device will typically result in each tube 28 having an even number of parallel legs 36, and a structure where the headers 20, 22 are located on the opposite side of the heat exchanger 10, typically If each tube 28 has an odd number of parallel legs, it is necessary to use the piping headers 20 and 22. A structure of 3 6. Of course, if the tube header plate of a specific application tank is used instead of the tubular representation of the symbolic representation 10 heat exchanger (structure) 12 cooling system 13 gas cooler 14 compressor 16 expansion device 17 evaporator 18 accumulator 19 Suction line heat exchanger 20, 22 Tube header 24, 26 Longitudinal axis 28 (slim) tube fitting 30 (snake-shaped bend) heat sink 31 First end tube end 32 First end tube end 34 孑 L port 36 parallel Legs and legs t • 21- 200301815 (15) 38 fluid channel 39 fluid channel 40 (staggered) fins 42 (slim) separator 44 heat sink element 45 edge 46 D long size d short size L length H heat sink height A Air flow W (transverse) width X distance interval

Claims (1)

200301815, patent application scope 1 · A heat exchanger that provides supercritical cooling of a working fluid in a transcritical cooling cycle is replaced by ', the heat exchanger includes: a pair of elongated tube headers, which are arranged substantially parallel to each other Longitudinal axis; a plurality of elongated pipe fittings spaced from each other in a side-to-side relationship along the longitudinal axis of the headers, each of which has a flat Section and the section has a long dimension and a short dimension, each of these pipe fittings has a first end connected to one of the header boxes, and a second end connected to another official collector, to The working fluid is transferred between the tubes and tanks, each of which is bent upwards to define the two parallel legs of the f piece, so that the working fluid flows from one of the headers to the other Continuously flowing through at least two parallel fluid channels, the parallel legs of each of these tubes are spaced apart from each other and the length of each of these parallel legs is located in a common plane substantially transverse to the longitudinal axis of the headers ;and A plurality of curved serpentine curved heat sinks extend between adjacent ones of the pipes, and each of the heat sinks has a length extending parallel to the flat legs of the adjacent pipes and spans the adjacent ones. At least two parallel parts of the pipe: a lateral width extending, each of the fins includes a plurality of staggered fins and elongated separating pieces extending parallel to the parallel legs, and the fins and 2 pieces are arranged on Between the parallel legs of the adjacent tubes, each width of the fins is divided into a plurality of discrete fin elements connected to each other by the fins, and each of the fin elements is connected to 200301815. μ > r-day but its extension. 2. For the heat exchanger of item i in the scope of patent application, the long dimension of each of these pipe fittings shall not exceed 0 ···, and its short dimension shall not exceed inches. · 3. For the heat exchanger of item i in the scope of patent application, the length of each of these pipe fittings shall not exceed 0.320 inches, and the length of the basin shall be shorter than 0.060. 4. If the scope of patent applications The heat exchanger of item (2), each of the ridges is folded at least twice to define that the white edge working fluid of the pipe is continuously passed through a parallel fluid channel from one of the pipes. If the heat exchanger of item 1 of the scope of the patent application, each of them has a longitudinal axis extending from one of these pipe fittings to # Ｍ 寺An ancient heat sink, 'Long Xuan Xuan long dimension does not exceed the height of the heat sink. X Xia Qi. Hai and other camping parts 6. If the patent application scope of the heat exchanger, a long dimension is in the The end of the pipe is connected to the longitudinal axis of the box of the main two-piece pipes such as 'Hai' and other pipes. The & ^ coexists with the pipe sets. It is not necessary to form a slit in the heat sink such as I. Xuan. Remove the heat sink material in the middle of time 8. If the heat exchanger of item 丨 of the patent application is applied, the agricultural separator must remove the heat sink material when it is formed in the heat sink of the middle and other heat sinks 200301815 Groove. 9. If the heat exchanger according to item [Scope of the application for patent], when at least one of the scattered heat sinks and the heat sinks are in the state of the β-government heat-uncurved state, the separators and the fins will be parallel to The scattered body length extends the body length, and the ratio of the length of the separated pieces to the length of the fins ranges from 200 to 600. 1〇 · = The heat exchanger for item 1 of the patent application scope, at least of which-the B pieces are 7-hole pipe fittings, and the pipe fittings have a hydraulic diameter in the range of 0.015 inches to 0.040 inches . η · A heat exchanger that provides supercritical cooling of the working fluid in a trans-critical cooling cycle, the heat exchanger includes a pair of elongated official headers having a plurality of longitudinally arranged, substantially parallel, field-length types Official parts are spaced from each other along the longitudinal axis of the tube headers in a side-to-side relationship. Each of the tube parts has a flat section and the section has a different length + β ^ ^ long and a short Size, each such tube has a connection to it-Xi Chu & — One of the first ends of the Hagar Sigma Hai official collection box, and one of the second ends of the city phase, so that the working fluid is transferred between these: phases' mother-the pipes themselves are bent upwards Fold to define 5 parallel legs, so that the working fluid flows continuously from one of these sets to the other through at least two parallel fluid channels. The parallel legs of the tube-finding piece are 1 female The leg white has its long dimension, and these long dimensions are transmitted on a common plane that intersects substantially transversely with the longitudinal axis of the headers, and 200301815 12. 13. 14, 15. Plural snake-like curved scatters, extending in intervals, each-such scattered " mesh adjacent " to the legs of these pipe fittings-length and two rows of horizontal widths extending flatly in the adjacent pipe fittings, each two Xiangmei ’s at least two parallel legs _ '. These heat sinks include a plurality of staggered different pieces extending parallel to the parallel legs, and, Tianchang-type separators, Xi: The cymbals and separators are provided at each Although a piece of helical wing separates each ㈣ ...: 4 parallel legs of adjacent pipe parts, the visibility is divided into a plurality of discrete fin element phases connected with each other by these fins. Connections 忒 The temple heat sink components are all extended. ° The length of the heat exchanger corresponding to the Qianxian Qiantu legs and along its patent application model, the length of the basin is not more than 0.500 inches, and the temple official parts (Μ. 英 英. 1 The short dimension is not more than the heat exchanger of the "Range of Benefits" item, where the long dimension of each of these pipe fittings is not more than 0.320 inches, and the short length is 0.060 inches. Heat exchanger, equipped with material buckles, T female one, and other pipe fittings are folded at least twice to define one of the pipe fittings and two parallel legs, so that the red fluid can pass continuously from a certain-the pipe The header is connected to the other two parallel fluid passages. For the heat exchanger of item 11 of the patent application scope, the length of the complex A ^ ε and the first female tube are connected at the end of the tube to the tube header line. The shafts extend in parallel. Such heat exchangers as the 11th in the scope of patent application for these pipes, where Xi ~ ~ ° Λ Temple heat sink Zhong Lu -4- 16. ^ 0301815 This is because the release system does not require a slit formed in the material. Remove the heat sink when searching for a heat sink 17. If the heat sink in item (1) of the patent application is located on the heat sink—not bent: Yes: Middle nine at least—these wings will have parallel to The heat dissipation = the length of the separated pieces and the equal separated pieces to the length of the fins: the length ':: within the range. Qianjia '" Provided in a transcritical cooling cycle of 200 to 600-a heat parent converter for supercritical cooling of the working fluid, the heat exchanger includes:, 7 P car by Γ pair of slim tube headers has substantially Longitudinal: number: solid elongated pipe fittings arranged parallel to each other are spaced from each other in a side-to-side relationship along the longitudinal axis of the headers. Each of these pipes has a Φ section and the section has a long dimension. And a short size, the long dimension of each of these pipe fittings is not more than 0.500 inches and its short dimension is not more than 0. Each: the pipe fittings have a first end and a connection to one of the pipe headers To the second end of one of the other headers, so that the working fluid is transferred between the headers, each of the tubes itself is folded upwards to define at least two parallel legs of the header, so that the work The fluid continuously flows through at least two parallel fluid channels from the fourth class header box to the other. The parallel legs of each of these pipe fittings have their long dimensions, and these long dimensions are located on the longitudinal axis of the header boxes. A common cross Surface; and a plurality of serpentine fins bending, of such pairs of adjacent pipe fittings in 200,301,815 Inter-extensions' each-the fins have a length extending parallel to the parallel legs of the adjacent tubes. 19. A heat exchanger that provides a supercritical cooling of a working fluid in a transcritical cooling cycle, the heat exchanger comprising: a elongated official header having a longitudinal axis disposed substantially parallel to each other; a plurality of elongated officials Pieces are spaced from each other along the longitudinal axis of the tube headers in a side-to-side relationship. Each of these tube pieces has a flattened surface and the cross section has a long dimension and a short dimension. Each of the pipe fittings has a first end connected to it-the tube headers and a second end connected to another tube header to transfer the working fluid between the tube headers. The pipes themselves are bent upwards at least twice at least three parallel legs of the 4 g piece, so that the working fluid continuously flows through the at least three parallel fluids from the official header tank such as σ HAI, etc., each The parallel legs of one of these pipe fittings each have their long dimensions, and the long dimensions are located in a common plane that substantially crosses transversely with the longitudinal axis of the tube headers; and a plurality of serpentine curved heat sinks are adjacent Success The portal member extending t 'master having a length such fins are parallel to such a tubular member adjacent parallel legs extending therefrom. 20. A heat exchanger that provides a supercritical cooling of a working fluid in a transcritical cooling cycle, the heat exchanger comprising: a pair of elongated tube headers having longitudinal axes disposed substantially parallel to each other; -6- 200301815 A plurality of elongated pipe fittings are spaced from each other along the longitudinal axis of the pipe headers in a side-to-side relationship. Each of these pipe fittings has a flat section and the section has a long dimension and a short dimension. Each of these fittings is a perforated fitting and the fitting has a hydraulic diameter in the range of 0.015 inches and 0.040 inches. Each fitting has a connection to one of the headers. A first end and a second end connected to another header: a second end to allow the working fluid to be transferred between the headers, the mother and the tubes themselves are bent upwards to define at least two of the tubes Flat: Legs' so that the working fluid passes from one of the headers to the other, through the at least two parallel fluid channels, and the parallel legs of each of these tubes have their long dimensions, and The long dimension is located between The longitudinal axis of the header generally crosses a common plane; and a plurality of curved serpentine curved heat sinks extend between the adjacent components and each of these pipes, each of which has parallel phases. The length of the adjacent tube extending parallel to the leg. 21. The heat exchanger of item 1 of the patent application, wherein at least one of the headers 2 includes a baffle to guide the refrigerant from the at least one of the headers through a subsidiary group of the official parts. 22. For the heat exchanger according to the scope of application for patent, the at least one tube header 7 includes a stretcher plate 'to guide the refrigerant from the at least one tube header through one of the subgroups of these elements. For example, the heat exchanger of item 8 of the patent application, wherein at least one of the tube headers includes a baffle to guide the refrigerant from the at least one tube header through one of the subgroups of the components. 23. 200301815 24. The heat exchanger according to item 19 of the patent application, wherein at least one of the headers includes a baffle to guide the refrigerant from the at least one header to a subsidiary group of the tubes. P