WO2016091026A1 - 换热器、换热模块、换热装置以及热源单元 - Google Patents

换热器、换热模块、换热装置以及热源单元 Download PDF

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Publication number
WO2016091026A1
WO2016091026A1 PCT/CN2015/093190 CN2015093190W WO2016091026A1 WO 2016091026 A1 WO2016091026 A1 WO 2016091026A1 CN 2015093190 W CN2015093190 W CN 2015093190W WO 2016091026 A1 WO2016091026 A1 WO 2016091026A1
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Prior art keywords
heat exchange
heat
heat exchanger
bent
body portion
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PCT/CN2015/093190
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English (en)
French (fr)
Inventor
穆斯塔发K·亚尼克
徐阳
杨静
Original Assignee
丹佛斯微通道换热器（嘉兴）有限公司
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Publication of WO2016091026A1 publication Critical patent/WO2016091026A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings

Definitions

  • the invention relates to the fields of HVAC, automobile, refrigeration and transportation, in particular to a heat exchanger, a heat exchange module, a heat exchange device and a heat source unit for an evaporator, a condenser and a water tank.
  • the prior art document WO2011013672 discloses a heat source unit.
  • the heat source unit is provided with an air heat exchanger, each air heat exchanger including a plurality of fins arranged at a prescribed interval, a heat exchange tube passing through the fins, extending on both sides and in the same direction Curved curved piece and heat exchange module.
  • Each heat exchange module includes two air heat exchangers, each air heat exchanger having a bend disposed opposite the bend of the other air heat exchanger. The air heat exchanger is tilted such that the lower edges are close to each other and the upper edges are spaced apart, whereby the heat exchange module is substantially letter V-shaped in side view.
  • the edges of the left and right side heat exchangers in the above heat source unit are spaced apart at the upper portion of the V-shaped configuration.
  • a shield plate or metal plate is still required to connect the two heat exchangers, resulting in a space between the two heat exchangers not being effectively used.
  • HVAC systems Heating, ventilation and air conditioning systems
  • HVAC systems are increasingly demanding energy efficiency and increasingly require higher performance heat exchangers.
  • the only option in the prior art is to make larger heat exchangers and air conditioning systems, which increases manufacturing and installation costs.
  • the present invention provides a heat exchanger for a heat exchange device on an air-cooled chiller or a commercial roofer, the heat exchanger comprising:
  • each bent portion having a substantially quadrangular side surface
  • At least one heat exchange tube extending between the main body portion and the two bent portions, the heat exchange tubes in the bent portion being bent or inclined with respect to the heat exchange tubes in the main body portion, such that The plane of the body portion is perpendicular or substantially perpendicular to a plane in which each of the two bends is located.
  • the heat exchanger further comprises two headers, the two headers being disposed on two opposite sides of the heat exchanger,
  • the heat exchange tube is a plurality of heat exchange tubes, and the heat exchange tubes are disposed in the main body portion and the bent portion at intervals and extend in the main body portion and the bent portion substantially in parallel with each other;
  • Each of the heat exchange tubes extends from one of the two headers through the body portion and the bent portion to the other header.
  • the body portion is for forming a generally trapezoidal side of the heat exchange device, and each bend is for forming a portion of a generally quadrangular side of the heat exchange device.
  • both sides of the heat exchange tube are bent at an angle ⁇ with the width direction as an axis, and the bend of each heat exchange tube on each side is substantially on a straight line.
  • the angle ⁇ is in the range of ⁇ /2-5° to ⁇ /2+5°, where ⁇ is the angle between the two waist sides of the trapezoidal side.
  • the length of each heat exchange tube is increased from bottom to top by 2L*tg ⁇ , wherein the distance between the heat exchange tubes in the bent portion is L .
  • the heat exchange tube is a flat tube, and fins are provided on a portion of the flat tube other than the bend.
  • the end of the flat tube is inserted vertically into the groove of the header.
  • the two bends in the heat exchanger have the same size or different sizes.
  • a method of forming the heat exchanger described above comprising:
  • each flat tube is bent at an angle ⁇ in the width direction, and the bent flat tubes are sequentially inserted into the slots of the collecting tube, wherein the flat tubes are substantially bent at each side On a straight line of bends;
  • bent flat tube is then further bent along the bend line such that the body portion is perpendicular or substantially perpendicular to the bend.
  • the distances of the flat tubes on both sides of the flat line to the header are the same or different.
  • a heat exchange module for a heat exchange device on an air-cooled chiller or a commercial roofer including at least one heat exchange module, the at least one heat exchange
  • the module comprises two heat exchangers as described above or a heat exchanger manufactured according to the method described above.
  • the two heat exchangers are substantially identical or symmetrical, the heat exchanger having a trapezoidal side on only one side The heat exchanger of the main body.
  • the heat exchange module further comprises a heat exchanger fan, and each heat exchanger is correspondingly provided with a heat exchanger fan.
  • each heat exchange module further comprises a baffle disposed between the two heat exchangers such that each heat exchanger fan and the respective heat exchanger form a separate heat exchange unit.
  • the baffle extends straight or meander between the two heat exchangers.
  • a heat exchange device for an air-cooled chiller or a commercial roofing machine, the heat exchange device comprising at least one heat exchange module, the at least one heat exchange module being The heat exchange module described.
  • a heat source unit comprising a heat exchange device that cooperates with each other, a blower, a drain pan that communicates with the heat exchange device, and a refrigeration cycle that accommodates the heat exchange device A mechanical chamber of the component, the heat exchange device being the heat exchange device described above.
  • FIG. 1 is a schematic view of a heat exchange device in accordance with the present invention.
  • FIG. 2 is a schematic illustration of a heat exchange module in accordance with a first embodiment of the present invention
  • FIG. 3 is a schematic illustration of a heat exchange module in accordance with a second embodiment of the present invention.
  • FIG. 4 is a schematic illustration of a heat exchange module in accordance with a third embodiment of the present invention.
  • Figure 5 is a schematic view of a heat exchanger before bending shown in Figure 2;
  • Figure 6 is a schematic view of the heat exchanger after bending shown in Figure 5;
  • Figure 7 is a schematic view of a heat exchanger before bending shown in Figure 4.
  • Figure 8 is a schematic view of the heat exchanger after bending shown in Figure 7;
  • FIG. 9 is a schematic illustration of a heat exchange module in accordance with the present invention.
  • FIG. 10 is a schematic illustration of another heat exchange module in accordance with the present invention.
  • FIG 11 is a schematic illustration of another heat exchange module in accordance with the present invention.
  • the design of the invention lies in the improvement of the heat exchange module used in the heat source unit of document WO 2011013672. Specifically, since a pair of heat exchangers are arranged in a substantially V-shape in a side view in this document, this results in a substantially V-shaped space between the curved portions of the opposed air heat exchangers. . Obviously, in the above document, the spaces between the pair of assembled heat exchanger body portions and the spaces between their adjacent curved portions are substantially the same V-shape, that is, the sandwich between them The angles are the same and are usually in the range of 30-90°. Eventually, the V-shaped space between the pair of heat exchangers is not effectively used.
  • V-shaped space needs to be closed by a plate which is cut into a substantially V-shape, that is, a shielding plate, to prevent air or wind from passing through the V-shaped space, thereby affecting the heat exchange effect.
  • a heat exchanger In the present invention, a heat exchanger, a heat exchange module, a heat exchange device, and a heat source unit are provided which successfully at least partially solve the deficiencies mentioned in the above documents. Accordingly, improvements to the heat exchanger, heat exchange module, heat exchange device, and heat source unit of the present invention will be highlighted below.
  • the arrangement of components such as a blower, a drain pan communicating with the heat exchange device, a mechanical chamber accommodating a refrigeration cycle component other than the heat exchange device, etc., among the heat source units mentioned in the above documents can also be applied to the present invention. Therefore, a detailed description of them can be found in the document and will not be described in detail herein.
  • conventional heat exchangers are generally rectangular in shape and require a sheet metal member to close the V-shaped side.
  • the above document refers to it as a V-shaped side surface, as is apparent from the above documents and the drawings of the present invention, it is generally manufactured into a substantially trapezoidal shape in an actual manufacturing process. Therefore, the present invention refers to it as a trapezoidal side to make it more realistic.
  • the object of the invention is to increase the heat exchange area to meet different application and installation requirements.
  • the side faces of the heat exchange module form a trapezoidal or substantially trapezoidal shape, at least partially replacing the trapezoidal side faces of the sheet metal member.
  • the heat exchanger, heat exchange module, heat exchange device and heat source unit may be applied to a commercial air conditioning system, specifically for use in a heat source unit, an air-cooled chiller or a commercial roofing machine.
  • the heat exchange device includes at least one heat exchange module having at least one side surface of a substantially trapezoidal shape perpendicular to the left and right sides (since referred to as a trapezoidal heat exchange side portion hereinafter), wherein the heat exchange side is disposed There is a header and heat exchange tubes and/or fins thereon.
  • the heat exchange device has a plurality of heat exchange modules 100, it can be as needed
  • the heat exchange device is selected to be any combination of a plurality of heat exchange modules 100 of the same type or different types of heat exchange modules 100 as described herein.
  • a top plate 50 is disposed at an upper end of the heat exchange module 100, and a fan module or unit 30 is disposed at a position corresponding to the heat exchangers 1 and 2 at the top plate 50.
  • a cylindrical air outlet 31 is provided in a direction protruding upward from the top plate 50, and the fan cover 32 covers the protruding end surface of the air outlet 31.
  • the blower 30 includes a propeller fan housed in the air outlet 31, a shaft core that is mounted opposite the fan cover 32, and a fan motor that mounts the propeller fan on the rotating shaft.
  • a support member or a support frame (not shown) for fixing the heat exchange module 100 may be provided at the bottom of the heat exchange module 100.
  • the left and right sides of the heat exchange module 100 are not strictly V-shaped sides, but are trapezoidal sides in practical applications.
  • each heat exchange module 100 has a trapezoidal heat exchange side with an included angle ⁇ between the two waist sides on the left and right sides of the page.
  • the heat exchange module 100 includes a heat exchange unit 10 and a heat exchange unit 20 after bending. As described below, the heat exchange unit 10 and the heat exchange unit 20 may be the same, symmetric or different. .
  • the heat exchange module consists of two identical heat exchangers 10 and 20. Referring to Figure 4, the two heat exchangers form a heat exchange module, but they can be referred to as heat exchangers 80.
  • a heat exchange module is constructed from two heat exchangers 60 and 70 of different sizes.
  • Each heat exchange unit 10 or 20 may be constructed of one or more heat exchangers, each of which is illustrated and described as a single heat exchanger for simplicity. In the first embodiment of the invention, the heat exchangers 10 and 20 are arranged to be identical.
  • the heat exchanger 10 includes a header 11, a header 12, a heat exchange tube 13, and fins 14.
  • a plurality of heat transfer tubes (and fins, if provided) extending horizontally in the left-right direction in the page of FIG. 5 constitute the main body portion 15 of the heat exchanger 10, and on both sides of the heat exchanger 10,
  • a plurality of heat exchange tubes and fins which are disposed at an angle ⁇ with respect to the left-right direction of the page of FIG. 5 constitute a bent portion 16 and a bent portion 17.
  • the body portion 15 has a generally trapezoidal side surface for forming a trapezoidal heat exchange side of the heat exchange module (this will be described below).
  • the bent portions 16 and 17 each have a side surface of a generally quadrangular shape (shown as a parallelogram in the drawing) for forming a rectangular side surface of the heat exchange module.
  • the main body portion 15 and the bent portion 16 are connected to each other at a straight line Y because the bent portion 16 is oriented with respect to the page of FIG. 5 with the bending axis Y as an axis as will be described later.
  • the outer bend is called the bend axis Y.
  • the main body portion 15 and the bent portion 17 are connected to each other at a straight line Y' because the bent portions 16 and 17 are aligned with respect to the page of FIG. 2 with the bending axes Y and Y' as axes as will be described later. It is bent outward, so it is called the bending axis Y and Y'. It is to be noted that, in the present example, the bent portions 16 and 17 are bent only once along the bending axes Y and Y' thereof.
  • the headers 11, 12 are respectively provided at the outermost sides of the heat exchanger 10, that is, on the right side of the bent portion 16 and the left side of the bent portion 17.
  • the headers 11 and headers 12 are equal or approximately equal in length, but as shown, they are angled or inclined relative to one another.
  • a plurality of heat exchange tubes 13 are disposed between the header 11 and the header 12 at intervals and in parallel with each other.
  • a plurality of grooves for assembling the heat exchange tubes 13 are provided on the headers 11, 12, respectively.
  • the fins 14 are disposed between adjacent heat exchange tubes 13.
  • the heat exchange tubes 13 are provided as flat tubes.
  • Both sides of the heat exchange tube 13 are bent in the width direction as an axis, for example, an angle ⁇ , wherein the bends of the heat exchange tubes are substantially at the bending axes Y and Y', respectively, the angle ⁇ In the range of ⁇ /2-5° to ⁇ /2+5°, where ⁇ is equal to the angle ⁇ of the trapezoidal heat exchange side.
  • the heat exchanger 20 can be disposed in a manner similar to the heat exchanger 10, which is the same as the heat exchanger 10, and will not be described again here.
  • a heat exchange device includes at least one heat exchange module.
  • the heat exchange device of the present invention may include one or any of several (for example, two, three, five, etc.) heat exchange modules and a corresponding number of fan modules or fan units, wherein the plurality of fan modules or The fan unit forms a fan unit or fan system.
  • each fan unit or module can also be a fan or more.
  • the heat exchange module includes two heat exchangers that are spliced together.
  • the composition of the heat exchange module may further include the following: the heat exchange module may include a single heat exchange unit, and the trapezoidal heat exchange side is folded. A portion of the individual heat exchange unit is bent (e.g., bent at both ends of a single flat heat exchanger) to form.
  • the heat exchange module may be formed by a plurality of heat exchange units, wherein the trapezoidal heat exchange side is formed by a single heat exchange unit that is assembled to other portions of the heat exchange module (eg, adjacent thereto) On other heat exchangers).
  • the heat exchange module may further include a heat exchange unit and a support member (for example, a metal plate support member) assembled to each other, the heat exchange unit being bent to form the trapezoidal heat exchange side, A trapezoidal heat exchange side is fitted to the support member.
  • each heat exchange unit is a single heat exchanger in the traditional sense, ie has two headers, and A plurality of heat exchange tubes (for example, flat tubes) which are spaced apart and parallel between them, and if possible, a plurality of fins may be disposed on the flat tube. It is of course also possible to include a plurality of heat exchangers.
  • a single heat exchange unit will be simply referred to as a heat exchanger.
  • each heat exchange module comprises two identical heat exchangers, i.e., heat exchangers 10 and 20 are identical.
  • each of the trapezoidal heat exchange sides is formed by a main body portion 15 bent by a heat exchanger.
  • the heat exchange tubes 13 in the bent portions 16, 17 are inclined and bent with respect to the heat exchange tubes in the main body portion 15, such that the plane in which the main body portion 15 is located is perpendicular or substantially perpendicular to the two folds The plane in which each bend in the bend is located.
  • the heat exchanger 10 having the bent portions on both sides is bent in such a manner that the flat tube 13 is bent first, and then the body of the heat exchanger 10 is bent.
  • the specific bending steps are as follows: First, the two sides of each flat tube 13 (such as the left and right sides of the flat tube in the drawing) are flattened in the width direction of the flat tube (ie, the front-rear direction in the page). The tube is bent at an angle ⁇ , and the bent flat tubes 13 are sequentially inserted into slots (not shown) of the headers 11, 12.
  • the heat exchanger 10 forms the main body portion 15 and the bent portions 16, 17.
  • the fins 14 are inserted between adjacent flat tubes and then placed in a brazing furnace to be brazed into a unitary body.
  • bent portions 16 and 17 in the bent heat exchanger are bent along the bending axis Y and Y', and are bent in a direction substantially perpendicular to the main body portion 15 (ie, the heat exchanger performs the body).
  • the bending is such that the main body portion 15 is perpendicular or substantially perpendicular to the bent portions 16 and 17 (see Fig. 6).
  • the main body portion 15 is a trapezoidal heat exchange side surface in the heat exchange module 100, and the bent portions 16 and 17 of the heat exchanger 10 respectively constitute two bent portions of the other heat exchanger 20.
  • the above-described main body portion 15 and the bent portions 16, 17 are rectangular and trapezoidal shapes, which are merely an example, which can be selected to any suitable shape as needed, such as a substantially square, trapezoidal, parallelogram shape.
  • the lowermost flat tube has the shortest length
  • the uppermost flat tube has the longest length
  • the distance between the flat tube and the flat tube is L.
  • the length of the flat tubes in the bent portion is sequentially increased from bottom to top at 2 Ltg ⁇ . For ease of processing, the length of each flat tube can be adjusted slightly.
  • the bending angle ⁇ of the flat tube is substantially a trapezoidal side surface (ie, the main body portion 15)
  • the angle between the two waists is half the angle of the angle ⁇ , but usually it is within the range of ⁇ /2-5° to ⁇ /2+5°.
  • the angle of the angle ⁇ between the bending axis Y and the bending axis Y' is preferably made substantially equal to the apex angle ⁇ of the heat-conducting trapezoidal side.
  • the above-mentioned bending mode is only an example of the present invention, and of course, those skilled in the art can select other methods (for example, at another angle) to perform bending as needed.
  • the end of the flat tube 13 on the side of the header 11 or 12 can be bent into the groove of the header 12 by being bent vertically or substantially perpendicularly.
  • those skilled in the art can also make the bend of the flat tube 13 (i.e., the position where the approximate bending axes Y and Y' are located) substantially or substantially free of fins, which makes it easier to bend the heat exchanger 10, and It also makes the bending radius as small as possible.
  • heat exchanger 10 and heat exchanger 20 are interconnected by respective headers to form heat exchange module 100. That is, the header in the heat exchanger 10 is connected to the header in the heat exchanger 20, and the other header in the heat exchanger 10 is connected to another header in the heat exchanger 20.
  • the main body portions of the heat exchanger 10 and the heat exchanger 20 are respectively used as the two trapezoidal heat exchange sides of the heat exchange module 100, thus increasing the heat exchange area.
  • a person skilled in the art can select a specific setting manner according to needs, and is not limited to the above manner. The above list is for illustrative purposes only and is not to be construed as limiting the invention.
  • the bending mode is the same as that of the heat exchanger of Figure 2, except that in the heat exchanger of Figure 2 two folds
  • the dimensions of the bends are the same, and the dimensions of the two bends of each heat exchanger 60, 70 in Figure 3 are the same, but the dimensions of the bends of the two heat exchangers 60, 70 are different from each other;
  • the two bends of each of the heat exchangers are different in size, but the two heat exchangers are symmetrical to each other.
  • those skilled in the art can select the size of the bent portion according to actual needs, which can be obtained according to the bending method described in FIG. 2, and therefore will not be described in detail herein.
  • the heat exchanger 80 having the bent portions on both sides is bent in such a manner that the flat tube 83 is bent first, and then the body of the heat exchanger 80 is bent.
  • the specific bending steps are as follows: First, the two sides of each flat tube 83 (such as the left and right sides of the flat tube in the drawing) are flattened by the width direction of the flat tube (ie, the front-rear direction in the page). The tube is bent at an angle ⁇ , and the bent flat tube 83 is sequentially inserted into a groove (not shown) of the header.
  • the heat exchanger 10 forms the main body portion 85 and the bent portions 86, 87.
  • the fins 84 are inserted between adjacent flat tubes and then placed in a brazing furnace to be brazed into a unitary body.
  • bent portions 86 and 87 in the bent heat exchanger are bent along the bending axis Y and Y', and are bent in a direction substantially perpendicular to the main body portion 85 (ie, the heat exchanger performs the body).
  • the bending is such that the main body portion 85 is perpendicular or substantially perpendicular to the bent portions 86, 87 (see Fig. 8).
  • the main body portion 85 is a trapezoidal heat exchange side surface in the heat exchange module 100, and the bent portions 86 and 87 of the heat exchanger 80 are respectively formed with two bent portions of the other heat exchanger 80.
  • the above-described main body portion 85 and the bent portions 86, 87 have a rectangular shape and a trapezoidal shape, which are merely an example, and can be selected as any suitable shape as needed, for example, a substantially square shape, a trapezoidal shape, or a parallelogram shape.
  • the lowermost flat tube has the shortest length
  • the uppermost flat tube has the longest length
  • the distance between the flat tube and the flat tube is L.
  • the length of the flat tubes in the bent portion is sequentially increased from bottom to top at 2 Ltg ⁇ . For ease of processing, the length of each flat tube can be adjusted slightly.
  • the bending angle ⁇ of the flat tube is approximately half the angle of the angle ⁇ between the waist sides of the trapezoidal side surface (ie, the main body portion 15), but usually only at ⁇ /2- It can be in the range of 5° to ⁇ /2+5°.
  • the angle of the angle ⁇ between the bending axis Y and the bending axis Y' is preferably made substantially equal to the apex angle ⁇ of the heat-conducting trapezoidal side.
  • the above-mentioned bending mode is only an example of the present invention, and of course, those skilled in the art can select other methods (for example, at another angle) to perform bending as needed.
  • the end of the flat tube 83 on one side of the header can be bent such that the flat tube 83 is inserted vertically or substantially vertically into the groove of the header.
  • the bend of the flat tube 83 i.e., the position where the approximate bending axes Y and Y' are located
  • the bend of the flat tube 83 substantially or substantially free of fins, which makes it easier to bend the heat exchanger 80, and It also makes the bending radius as small as possible.
  • Each heat exchanger fan can be combined into a single unit by providing a baffle between the two heat exchangers, so that when the unit is stopped during low load operation, the wind can be effectively prevented from stopping. Units to increase heat transfer efficiency and reduce energy consumption. The structure in which the shutter is provided will be described below with reference to Figs.
  • FIG. 9 A schematic structural view of the heat exchange module of Fig. 2 when used with the baffle 90 is shown in Fig. 9.
  • the baffles 90 are arranged to be located in the headers of the heat exchangers 10 and 20 (the four circles shown in the figure are the headers, For the sake of simplicity, only the straight baffles 90 between the headers 11) are labeled.
  • FIG. 3 A schematic view of the structure of the heat exchange module of FIG. 3 when used with the baffle 90 is shown in FIG. Since the heat exchangers 60 and 70 in Fig. 3 have different sizes of the bent portions, the baffles 90 are disposed to be located in the headers of the heat exchangers 10 and 20 (the four circles shown in the figure are The header, here for the sake of simplicity, only the baffle 90 between the headers 71) is labeled.
  • FIG. 11 A schematic view of the structure of the heat exchange module of Fig. 4 when used with the baffle 90 is shown in Fig. 11.
  • the baffles 90 are arranged to be located in the headers of the two heat exchangers 80 (four circles shown in the figure) This is a header, and for the sake of simplicity, only the stepped baffle 90 between the headers 11) is indicated.
  • baffles 90 between the two heat exchangers is not limited to the above-described circumstances, and those skilled in the art can make selections as needed.
  • the above embodiment of the present invention uses the first flat tube to be bent at an angle ⁇ , for example, the bent tube is bent perpendicular to the main body portion with respect to the main body portion of the heat exchanger, thereby finally forming a change.
  • the trapezoidal side of the thermal device but other ways can be used to create a heat exchanger of similar construction.
  • the same or similar structure as the heat exchanger of the present invention is obtained, for example, by winding the heat exchange tube such that it partially or completely continuously extends between the main body portion and the bent portion of the heat exchanger described above. . That is, a heat exchanger similar to the present invention can be obtained by winding one or more heat exchange tubes into a substantially U-shaped or ⁇ structure. This winding method eliminates the need for a header when feasible.
  • An advantage of the present invention is that it is not necessary to increase the heat exchange area of the heat exchange device by increasing the HVAC system. It can increase the energy efficiency of HVAC systems by reducing the heat transfer performance of the heat exchanger (reducing power consumption). If HVAC does not require higher energy efficiency and greater heat transfer performance, it can also be used to reduce the number of heat exchangers in the system, making the overall HVAC system more compact and having lower manufacturing and installation costs.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)

Abstract

一种用于风冷冷水机组或商用屋顶机上的换热装置的换热器（1，2）、换热模块（100）、换热装置以及热源单元，所述换热器（1，2）包括：主体部（15），主体部（15）具有大体梯形的侧面；主体部（15）分别连接的两个折弯部（16，17），每一折弯部（16，17）具有大体四边形的侧面；至少一根换热管（13），换热管（13）在主体部（15）和两个折弯部（16，17）之间延伸，在折弯部（16，17）中的换热管（13）被相对于主体部中的换热管（13）折弯或倾斜，使得主体部（15）所在平面垂直或大体垂直于两个折弯部（16，17）中的每一个所在的平面。该换热器（1，2）、换热模块（100）、换热装置以及热源单元能够使得两个换热器（1，2）之间的空间充分利用。

Description

换热器、换热模块、换热装置以及热源单元
本申请要求于2014年12月11日递交的、申请号为201410763737.9、发明名称为“换热器、换热模块、换热装置以及热源单元”的中国专利申请的优先权，其全部内容通过引用并入本申请中。
技术领域
本发明涉及暖通空调、汽车、制冷以及运输领域，尤其涉及用于蒸发器、冷凝器和水箱等的换热器、换热模块、换热装置以及热源单元。
背景技术
现有技术文献WO2011013672公开一种热源单元。具体地，该热源单元设置有空气换热器，每个空气换热器包括以规定的间隔布置的多个散热片、穿过所述散热片的换热管、在两侧延伸且沿同一方向弯曲的弯曲片部以及换热模块。每个换热模块包括两个空气换热器，每个空气换热器具有关于另一空气换热器的弯曲部相对地设置的弯曲部。空气换热器被倾斜，使得下边缘彼此靠近且上边缘间隔开，由此换热模块在侧视图中成大致字母V形。
然而，上述的热源单元中的左右侧换热器的边缘在V形构造的上部间隔开。这样，仍然需要遮蔽板(或金属板)来连接两个换热器，从而导致了两个换热器之间的空间没有被有效地使用。
采暖通风与空调系统(HVAC系统)的能效要求日益提高，越来越需要更高性能的换热器。目前，现有技术的唯一的选择就是制造更大的换热器和空调系统，这增加了制造和安装成本。
有鉴于此，确有需要提供一种能够至少部分地解决上述问题的新型的换热器。
发明内容
本发明的目的旨在解决现有技术中存在的上述问题和缺陷的至少一个方面。
在一个方面中，本发明提供了一种用于风冷冷水机组或商用屋顶机上的换热装置的换热器，所述换热器包括：
主体部，所述主体部具有大体梯形的侧面；
与主体部分别连接的两个折弯部，每一折弯部具有大体四边形的侧面；
至少一根换热管，所述换热管在主体部和两个折弯部之间延伸，在折弯部中的换热管被相对于主体部中的换热管折弯或倾斜，使得所述主体部所在平面垂直或大体垂直于所述两个折弯部中的每一个所在的平面。
优选地，所述换热器还包括两根集流管，所述两根集流管设置在换热器的两个相对侧上，
其中，所述换热管为多根换热管，所述换热管间隔地设置在主体部和折弯部中并且彼此大致平行地在主体部和折弯部中延伸；
每一所述换热管从所述两根集流管中的一根集流管延伸通过主体部和折弯部至另一根集流管。
优选地，所述主体部用于构成所述换热装置的大体梯形的侧面，并且每一折弯部用于构成所述换热装置的大体四边形侧面的一部分。
优选地，所述换热管的两侧被以宽度方向为轴线折弯成角度α，所述换热管的在每一侧的折弯处大致在一条折弯直线上。
优选地，所述角度α在β/2-5°至β/2+5°的范围内，其中β为梯形侧面的两腰边之间的夹角。
优选地，在主体部的梯形的短边位于下方时，每一根换热管的长度由下往上以2L*tgα递增，其中所述折弯部中的换热管之间的间距为L。
优选地，所述换热管为扁管，并且在扁管的除折弯处之外的部分上设置有翅片。
优选地，所述扁管的端部垂直地插入集流管的槽中。
优选地，换热器中的两个折弯部具有相同的尺寸或不同的尺寸。
在本发明的另一方面中，提供了一种形成上述的换热器的方法，包括：
将每根扁管的两侧以宽度方向为轴线折弯成角度α，将折弯后的扁管依次插入集流管的槽内，其中所述扁管的在每一侧的折弯处大致在一条折弯直线上；
然后，将折弯的扁管沿着折弯直线进一步折弯，使得所述主体部与折弯部垂直或大致垂直。
优选地，所述扁管的在两侧的折弯直线到集流管的距离相同或不同。
在本发明的另一方面中，提供了一种用于风冷冷水机组或商用屋顶机上的换热装置的换热模块，所述换热装置包括至少一个换热模块，所述至少一个换热模块包括两个上述的换热器或根据上述的方法所制造的换热器。
优选地，所述两个换热器大致相同或对称，所述换热器为仅在一侧具有梯形侧面 的主体部的换热器。
优选地，所述换热模块还包括换热器风扇，每一换热器对应地设置有一个换热器风扇。
优选地，每一换热模块还包括设置在两个换热器之间的挡板，使得每个换热器风扇和相应的换热器构成一个独立的换热单元。
优选地，所述挡板在两个换热器之间平直地或蜿蜒地延伸。
在本发明的另一方面中，提供了一种用于风冷冷水机组或商用屋顶机上的换热装置，所述换热装置包括至少一个换热模块，所述至少一个换热模块是上所述的换热模块。
在本发明的另一方面中，提供了一种热源单元，所述热源单元还包括相互配合的换热装置、鼓风机、与换热装置连通的排水盘以及容纳除换热装置之外的制冷循环组成部分的机械室，所述换热装置是上述的换热装置。
附图说明
本发明的这些和/或其他方面和优点从下面结合附图对优选实施例的描述中将变得明显和容易理解，其中：
图1是根据本发明的换热装置的示意图；
图2是根据本发明的第一实施例的换热模块的示意图；
图3是根据本发明的第二实施例的换热模块的示意图；
图4是根据本发明的第三实施例的换热模块的示意图；
图5是图2所示的在折弯前的一个换热器的示意图；
图6是图5所示的在折弯后的换热器的示意图；
图7是图4所示的在折弯前的一个换热器的示意图；
图8是图7所示的在折弯后的换热器的示意图；
图9是根据本发明的换热模块的示意图；
图10是根据本发明的另一换热模块的示意图；
图11是根据本发明的另一换热模块的示意图。
具体实施方式
下面通过实施例，并结合附图1-11，对本发明的技术方案作进一步具体的说明。 在说明书中，相同或相似的附图标号指示相同或相似的部件。下述参照附图对本发明实施方式的说明旨在对本发明的总体发明构思进行解释，而不应当理解为对本发明的一种限制。
如从本发明的背景技术中所了解的，本发明的设计要点在于对文献WO 2011013672中的热源单元中所使用的换热模块的改进。具体地是由于在该文献中一对换热器在侧视图中被设置成大致V字状，这样就会造成在对置的空气换热器的弯曲部相互之间形成大致V字状的空间。显然，在上述文献中所述一对装配在一起的换热器主体部之间的空间且它们的相邻的弯曲部之间的空间都大致呈同一V字形，也就是说它们之间的夹角相同，且通常在30-90°的范围内。最终，造成该一对换热器之间的V字形空间没有被有效地使用。由于他们之间夹角较大，上述V字形空间需要由被剪切成大致V字形的板体即遮蔽板封闭，防止空气或风穿过该V字形空间，从而影响换热效果。
在本发明中，提供了一种换热器、换热模块、换热装置和热源单元，它们成功地至少部分地解决了上述文献所提及的不足。因此，在下文将着重描述本发明对于换热器、换热模块、换热装置和热源单元所进行的改进。由于上述文献中所提及的热源单元中的诸如鼓风机、与换热装置连通的排水盘、容纳除换热装置之外的制冷循环组成部分的机械室等部件的布置也可以应用到本发明中，因此关于它们的具体描述可以参见该文献，不再在此进行详细描述。
从上述文献可知，传统的换热器一般为矩形，且需要钣金件来封闭V形侧面。在此需要说明的是，虽然上述文献将其称为V形侧面，但是如从上述文献和本发明的附图可知，在实际制造过程中，通常将其制造成大致梯形。因此，本发明将其称为梯形侧面，以使得更加符合实际情况。本发明的目的在于增加换热面积，满足不同的应用和安装要求。通过下述可知，在本发明中，通过折弯换热器使得在拼接之后，换热模块的侧面形成梯形或大致梯形，至少部分地替代钣金件封闭的梯形侧面。
根据本发明实施例的换热器、换热模块、换热装置和热源单元可以应用于商业空调系统，具体是用于热源单元中、风冷冷水机组或商用屋顶机中。通常，该换热装置包括至少一个换热模块，该至少一个换热模块具有垂直于左右两侧的大体梯形的至少一个侧面(由于以下简称为梯形换热侧部)，其中换热侧面中设置有集流管以及其上的换热管和/或翅片。
本领域技术人员可以理解，在换热装置具有多个换热模块100时，可以根据需要 选择将换热装置设置为由多个同类型换热模块100组成或者采用本发明所述的不同类型的换热模块100的任意组合形式。
参见图1，在换热模块100的上端设置有顶板50，且在该顶板50与换热器1和2相对应的位置处设置有风机模块或单元30。在一个实施例中，从顶板50向上突出的方向上设置有圆筒状的出风口31，风扇罩32覆盖该出风口31的突出端面。该鼓风机30包括：螺旋桨式风扇，容纳在出风口31内；轴芯，与风扇罩32对置地安装，以及风扇马达，将该螺旋桨式风扇安装在旋转轴上。
当然，为了更好地固定换热模块100，还可以在换热模块100的底部设置有固定其的支撑件或支撑框架(未示出)。在实际中，如图1所示，换热模块100的左右侧面不是严格意义上的V形侧面，而是在实际应用中为梯形侧面。如图所见，每个换热模块100在页面的左右两侧上具有两腰边之间的夹角θ的梯形换热侧面。
在此为了便于描述和说明，仅示出了其中所包含的换热部分或换热器/换热单元。
参见图2，示出了根据本发明的第一实施例的换热器以及由两个相同的换热器构成的换热模块的示意图。具体参见图5和6结合图2，换热模块100包括折弯后的换热单元10和换热单元20，如下文所述的，换热单元10和换热单元20可以相同、对称或不同。在图2中换热模块由两个相同的换热器10和20。参见图4，两个换热器构成换热模块，但是它们可以相对称，故都显示为换热器80。在图3中，由两个尺寸不同的换热器60和70构成一个换热模块。
每一换热单元10或20可以由一个或多个换热器构成，在此为了简便，每一换热单元都图示和描述成单个换热器。在本发明的第一实施例中，换热器10和20设置成完全相同。
参见图5，在本发明的第一实施例中，换热器10包括集流管11、集流管12、换热管13和翅片14。在图5的页面内沿左右方向水平地延伸的多根换热管(以及翅片，如果设置有的话)构成了换热器10的主体部15，而在换热器10的两侧、相对于图5的页面的左右方向成角度α设置的多根换热管以及翅片构成了折弯部16和折弯部17。主体部15具有大体梯形侧面，用于形成换热模块的梯形换热侧面(这将在下文进行描述)。而折弯部16和17都具有大体四边形(在图中示出为平行四边形)的侧面，用于形成换热模块的矩形侧面。主体部15和折弯部16在直线Y处彼此连接，因为如在下文所描述的将以折弯轴线Y为轴线使折弯部16相对于图5的页面向 外折弯，故将其称为折弯轴线Y。同理，主体部15和折弯部17在直线Y’处彼此连接，因为如在下文所描述的将以折弯轴线Y和Y’为轴线使折弯部16和17相对于图2的页面向外折弯，故将其称为折弯轴线Y和Y’。需要说明的是，在本实例中，折弯部16和17仅沿着其的折弯轴线Y和Y’折弯一次。
在图5所示的换热器10中，集流管11、12分别设置换热器10的最外侧，即在折弯部16的右侧和折弯部17的左侧。集流管11和集流管12的长度相等或者近似相等，但是如图所示他们相对彼此成一定角度或倾斜。多根换热管13间隔地且彼此平行地设置在集流管11和集流管12之间。在集流管11、12上分别设置有用以装配换热管13的多个槽。翅片14设置在相邻换热管13之间。在本示例中，将换热管13设置为扁管。
所述换热管13的两侧被以宽度方向为轴线折弯成例如角度α，其中所述换热管的折弯处分别大致在所述折弯轴线Y和Y’处，所述角度α在β/2-5°至β/2+5°的范围内，其中β等于梯形换热侧面的夹角θ。同理，可以以类似于换热器10的方式设置换热器20，使其与换热器10相同，在此不再累述。
在图中为了突出描述重点，省去了与之相关联的冷水机组单元或热源单元中的相关部件。鉴于本发明的主要设计在于换热装置，这样的省略不会影响本领域技术人员对本发明的理解且也不会使得本发明的公开内容的不完整。
在本领域中熟知，换热装置包括至少一个换热模块。可以明白，本发明所述的换热装置可以包括一个或者任意几个(例如，两个、三个、五个等)换热模块和相应数量的风机模块或风机单元，其中多个风机模块或风机单元构成了一个风机装置或风机系统。当然，每个风机单元或模块也可以是一个风机或更多个风机。
通常，换热模块包括两个拼接在一起的换热器。当然，本领域技术人员可以明白，换热模块的组成方式不限于上述类型，换热模块的组成方式还可以包括以下几种：换热模块可以包括单个换热单元，其梯形换热侧面通过折弯该单个换热单元的一部分(例如折弯单个平板型换热器的两端)来形成。或者，换热模块还可以由多个换热单元形成，其中该梯形换热侧部由单个换热单元来形成，该梯形换热侧面被装配到换热模块的其他部分(例如与之相邻的其他换热器)上。或者，换热模块中还可以包括相对彼此装配在一起的一个换热单元和一个支撑构件(例如金属板支撑构件)，所述换热单元被折弯以形成所述梯形换热侧面，所述梯形换热侧面装配到所述支撑构件上。原则上，每个换热单元为传统意义上的单个换热器，即具有两根集流管、以及在 它们之间间隔地且平行地延伸的多根换热管(例如扁管，如果可以的话，扁管上可以设置有多个翅片)。当然也可以包括多个换热器。以下，为了描述简便，将单个换热单元简称为换热器。
如图5-6所述，在本发明的第一实施例中，每一换热模块包括两个相同的换热器，即换热器10和20相同。在该换热模块中，每一梯形换热侧面由一个换热器折弯后的主体部15形成。
具体地，在折弯部16、17中的换热管13被相对于主体部15中的换热管倾斜和折弯，使得主体部15所在的平面垂直于或大体垂直于所述两个折弯部中的每一个折弯部所在的平面。
以图5为例，说明两侧具有折弯部的换热器10的折弯方式为：先进行扁管13的折弯，再进行换热器10的本体折弯。具体折弯步骤如下：首先，将每根扁管13的两侧(如图示中扁管的左右两侧)，以该扁管的宽度方向(即页面中的前后方向)为轴线，将扁管折弯成角度α，并将折弯后的扁管13依次插入集流管11、12的槽(未示出)内。然后，通过调整扁管的位置，使所有扁管13在任一侧的折弯处大致在一条线上，即，如图5所示的折弯轴线Y和Y’上。需要说明的是，两个折弯轴线Y和Y’之间形成所述的角度β(两个折弯轴线Y和Y’距离各自的集流管11和12的距离相同，故使得折弯部16和17的尺寸相同，下面将详细对其描述)。这样，换热器10就形成了主体部15和折弯部16、17。在相邻扁管之间插入翅片14，然后放进钎焊炉里钎焊成整体。最后，将折弯后的换热器中的折弯部16和17以折弯轴线Y和Y’为折弯轴线，沿着大致垂直于主体部15的方向折弯(即换热器进行本体折弯)，使得主体部15与折弯部16和17垂直或大致垂直(参见图6)。
如图5和6所示，主体部15为换热模块100中的梯形换热侧面，换热器10的折弯部16和17分别与另一换热器20的两个折弯部构成了换热模块100的一个矩形换热侧面。然而，可以明白，上述主体部15和折弯部16、17为矩形形状和梯形形状仅是一种示例，其可以根据需要被选择成任何合适的形状，例如大致方形、梯形、平行四边形形状。
在主体部15中，最下边的一根扁管长度最短，最上端的扁管长度最长，扁管与扁管之间的间距为L。并优选地，使得折弯部中的扁管的长度由下往上以2Ltgα依次递增。为了加工方便，每根扁管的长度可以稍作调整。
在折弯过程中，优选地，使扁管的折弯角度α大致为梯形侧面(即主体部15) 的两腰边之间的夹角β的角度的一半，但是通常只要在β/2-5°至β/2+5°的范围内即可。折弯轴线Y与折弯轴线Y’之间的夹角β的角度优选地使之大致等于换热梯形侧面的顶角θ。当然，上述的折弯方式仅是本发明的一个示例，当然本领域技术人员可以根据需要选择其他的方式(例如以另一角度)进行折弯。
为了装配方便，在集流管11或12一侧的扁管13的端部可以通过折弯使得扁管13垂直或大致垂直地插入集流管12的槽内。当然，本领域技术人员还可以使扁管13的折弯处(即大致折弯轴线Y和Y’所在的位置)大致或基本上没有翅片，这样更容易将换热器10折弯，并还能使折弯半径尽可能的小。
本领域技术人员可以理解，在本实施例中，由于换热模块100中的右侧换热器10和左侧换热器20大致相同或对称，因此，换热器20的结构和折弯的原理与换热器10的结构与原理大致相同，在此不再赘述。
再次参见图2和6，换热器10和换热器20通过彼此的集流管相互连接，以形成换热模块100。即，换热器10中的集流管与换热器20中的集流管相连接，换热器10中的另一集流管与换热器20中的另一集流管相连接，使得换热器10和换热器20的主体部分别用作换热模块100的两个梯形换热侧面，这样就增加了换热面积。本领域技术人员可以根据需要选择具体设置方式，不限于上述的方式。以上列举仅是为了示例性的说明，不能理解为对本发明的一种限制。
虽然在图3-4中示出了不同尺寸的换热器，但是其的折弯方式与图2中的换热器相同，不同之处在于，在图2中的换热器中两个折弯部的尺寸相同，而在图3中每一换热器60、70的两个折弯部的尺寸相同，但是两个换热器60、70彼此的折弯部的尺寸不同；在图4中每一个换热器的两个折弯部的尺寸不同，但是两个换热器彼此对称。鉴于形成图3-4所述的换热器，本领域技术人员可以根据实际需要选择折弯部的尺寸，依据图2中所述的折弯方法就可以获得，故在此不再详述。
参见图7和8，其具体示出了图4中换热其的折弯前后的结构示意图。
以图7为例，说明两侧具有折弯部的换热器80的折弯方式为：先进行扁管83的折弯，再进行换热器80的本体折弯。具体折弯步骤如下：首先，将每根扁管83的两侧(如图示中扁管的左右两侧)，以该扁管的宽度方向(即页面中的前后方向)为轴线，将扁管折弯成角度α，并将折弯后的扁管83依次插入集流管的槽(未示出)内。然后，通过调整扁管的位置，使所有扁管83在任一侧的折弯处大致在一条线上，即，如图7所示的折弯轴线Y和Y’上。需要说明的是，两个折弯轴线Y和Y’之 间形成所述的角度β(但是两个折弯轴线距离两侧的集流管的距离不同，导致最终形成的折弯部的尺寸不同)。这样，换热器10就形成了主体部85和折弯部86、87。在相邻扁管之间插入翅片84，然后放进钎焊炉里钎焊成整体。最后，将折弯后的换热器中的折弯部86和87以折弯轴线Y和Y’为折弯轴线，沿着大致垂直于主体部85的方向折弯(即换热器进行本体折弯)，使得主体部85与折弯部86、87垂直或大致垂直(参见图8)。
如图7和8所示，主体部85为换热模块100中的梯形换热侧面，换热器80的折弯部86和87分别与另一换热器80的两个折弯部构成了换热模块100的一个矩形换热侧面。然而，可以明白，上述主体部85和折弯部86、87为矩形形状和梯形形状仅是一种示例，其可以根据需要被选择成任何合适的形状，例如大致方形、梯形、平行四边形形状。
在主体部85中，最下边的一根扁管长度最短，最上端的扁管长度最长，扁管与扁管之间的间距为L。并优选地，使得折弯部中的扁管的长度由下往上以2Ltgα依次递增。为了加工方便，每根扁管的长度可以稍作调整。
在折弯过程中，优选地，使扁管的折弯角度α大致为梯形侧面(即主体部15)的两腰边之间的夹角β的角度的一半，但是通常只要在β/2-5°至β/2+5°的范围内即可。折弯轴线Y与折弯轴线Y’之间的夹角β的角度优选地使之大致等于换热梯形侧面的顶角θ。当然，上述的折弯方式仅是本发明的一个示例，当然本领域技术人员可以根据需要选择其他的方式(例如以另一角度)进行折弯。
为了装配方便，在集流管一侧的扁管83的端部可以通过折弯使得扁管83垂直或大致垂直地插入集流管的槽内。当然，本领域技术人员还可以使扁管83的折弯处(即大致折弯轴线Y和Y’所在的位置)大致或基本上没有翅片，这样更容易将换热器80折弯，并还能使折弯半径尽可能的小。
上文示出了上述不同类型的换热器，但是它们具有以下优点：
1)扁管的端部垂直插入集流管，可以用常规集流管的设计，不需要额外投资集流管模具，减少集流管加工难度。
2)可以通过在两个换热器中间设置挡板使每个换热器风扇组合成为一个独立单元，这样在低负荷运转的时候，如果一个单元停止运行，可以有效的防止风流经停止运行的单元，从而提高换热效率，降低能耗。下面将结合图9-11对设置有挡板时的结构进行描述。
在图9中示出了图2中的换热模块与挡板90一起使用时的结构示意图。鉴于图2中的换热器10和20具有相同的尺寸，故将挡板90设置成位于换热器10和20的集流管(图中示出的四个圆圈即为集流管，在此为了简明仅标注了集流管11)之间的平直的挡板90。
在图10中示出了图3中的换热模块与挡板90一起使用时的结构示意图。鉴于图3中的换热器60和70彼此的折弯部具有不同的尺寸，故将挡板90设置成位于换热器10和20的集流管(图中示出的四个圆圈即为集流管，在此为了简明仅标注了集流管71)之间的蜿蜒的挡板90。
在图11中示出了图4中的换热模块与挡板90一起使用时的结构示意图。鉴于图4中的两个换热器80具有相同的尺寸，但是它们是彼此对称的，故将挡板90设置成位于两个换热器80的集流管(图中示出的四个圆圈即为集流管，在此为了简明仅标注了集流管11)之间的具有台阶状的挡板90。
可以理解，两个换热器之间的挡板90的设置不限于上述的情形，本领域技术人员可以根据需要进行选择。
虽然本发明的上述实施例都采用先折弯扁管成例如角度α，之后在相对于换热器的主体部折弯所述已经折弯的扁管使其垂直于主体部，从而最终形成换热装置的梯形侧面，但是也可以使用其他的方式来制造出具有类似结构的换热器。例如通过绕制换热管使得其在上述的换热器的主体部和折弯部之间部分地或全部地连续地蜿蜒延伸，来获得与本发明的换热器相同或相类似的结构。也就是说，可以通过绕制一根或多根换热管成大致U形或蜿蜒结构，来获得与本发明相类似的换热器。在可行的情况下，这种绕制方式可以省去使用集流管。
本发明的优点在于，不需要通过增大HVAC系统便可以实现增加换热装置的换热面积。它可以通过增加换热器的换热性能来增加HVAC系统能效(降低消耗功率)。如果HVAC不需要更高的能效和更大的换热性能，它还可以用于减少系统中的换热器的数量，使得整体HVAC系统更加紧凑，并具有较低的制造和安装成本。
以上仅为本发明的一些实施例，本领域普通技术人员将理解，在不背离本总体发明构思的原则和精神的情况下，可对这些实施例做出改变，本发明的范围以权利要求和它们的等同物限定。

Claims (18)

  1. 一种用于风冷冷水机组或商用屋顶机上的换热装置的换热器，所述换热器包括：
    主体部，所述主体部具有大体梯形的侧面；
    与主体部分别连接的两个折弯部，每一折弯部具有大体四边形的侧面；
    至少一根换热管，所述换热管在主体部和两个折弯部之间延伸，在折弯部中的换热管被相对于主体部中的换热管折弯或倾斜，使得所述主体部所在平面垂直或大体垂直于所述两个折弯部中的每一个所在的平面。
  2. 根据权利要求1所述的换热器，其特征在于，
    还包括两根集流管，所述两根集流管设置在换热器的两个相对侧上，
    其中，所述换热管为多根换热管，所述换热管间隔地设置在主体部和折弯部中并且彼此大致平行地在主体部和折弯部中延伸；
    每一所述换热管从所述两根集流管中的一根集流管延伸通过主体部和折弯部至另一根集流管。
  3. 根据权利要求2所述的换热器，其特征在于，
    所述主体部用于构成所述换热装置的大体梯形的侧面，并且每一折弯部用于构成所述换热装置的大体四边形侧面的一部分。
  4. 根据权利要求1-3中任一项所述的换热器，其特征在于，
    所述换热管的两侧被以宽度方向为轴线折弯成角度α，所述换热管的在每一侧的折弯处大致在一条折弯直线上。
  5. 根据权利要求4所述的换热器，其特征在于，
    所述角度α在β/2-5°至β/2+5°的范围内，其中β为梯形侧面的两腰边之间的夹角。
  6. 根据权利要求5所述的换热器，其特征在于，
    在主体部的梯形的短边位于下方时，每一根换热管的长度由下往上以2L*tgα递增，其中所述折弯部中的换热管之间的间距为L。
  7. 根据权利要求1-6中任一项所述的换热器，其特征在于，
    所述换热管为扁管，并且在扁管的除折弯处之外的部分上设置有翅片。
  8. 根据权利要求7所述的换热器，其特征在于，
    所述扁管的端部垂直地插入集流管的槽中。
  9. 根据权利要求1-8中任一项所述的换热器，其特征在于，
    换热器中的两个折弯部具有相同的尺寸或不同的尺寸。
  10. 一种形成权利要求8中所述的换热器的方法，包括：
    将每根扁管的两侧以宽度方向为轴线折弯成角度α，将折弯后的扁管依次插入集流管的槽内，其中所述扁管的在每一侧的折弯处大致在一条折弯直线上；
    然后，将折弯的扁管沿着折弯直线进一步折弯，使得所述主体部与折弯部垂直或大致垂直。
  11. 根据权利要求10所述的方法，其特征在于，
    所述扁管的在两侧的折弯直线到集流管的距离相同或不同。
  12. 一种用于风冷冷水机组或商用屋顶机上的换热装置的换热模块，所述换热装置包括至少一个换热模块，所述至少一个换热模块包括两个根据权利要求1-9所述的换热器或根据权利要求10-11所制造的换热器。
  13. 根据权利要求12所述的换热模块，其特征在于，
    所述两个换热器大致相同或对称，所述换热器为仅在一侧具有梯形侧面的主体部的换热器。
  14. 根据权利要求12或13所述的换热模块，其特征在于，
    所述换热模块还包括换热器风扇，每一换热器对应地设置有一个换热器风扇。
  15. 根据权利要求14所述的换热模块，其特征在于，
    每一换热模块还包括设置在两个换热器之间的挡板，使得每个换热器风扇和相应的换热器构成一个独立的换热单元。
  16. 根据权利要求15所述的换热模块，其特征在于，
    所述挡板在两个换热器之间平直地或蜿蜒地延伸。
  17. 一种用于风冷冷水机组或商用屋顶机上的换热装置，所述换热装置包括至少一个换热模块，所述至少一个换热模块是根据权利要求12-16中任一项所述的换热模块。
  18. 一种热源单元，所述热源单元还包括相互配合的换热装置、鼓风机、与换热装置连通的排水盘以及容纳除换热装置之外的制冷循环组成部分的机械室，其特征在于，所述换热装置是根据权利要求17所述的换热装置。
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