CN201935605U

CN201935605U - Spiral coil heat exchanger

Info

Publication number: CN201935605U
Application number: CN201020664062XU
Authority: CN
Inventors: 陈凌云; 曾晓程; 沈增友
Original assignee: China Yangzi Group Chuzhou Yangzi Air Conditioner Co Ltd
Current assignee: China Yangzi Group Chuzhou Yangzi Air Conditioner Co Ltd
Priority date: 2010-12-16
Filing date: 2010-12-16
Publication date: 2011-08-17
Anticipated expiration: 2020-12-16

Abstract

The utility model discloses a spiral coil heat exchanger, which comprises two runners of an inner heat transfer tube (10) of a spiral coil and an outer spiral coil (12), and is characterized in that: the wall surfaces of the two runners are closely contacted with each other in a winding mode, and the outer surface of the inner heat transfer tube (10) is provided with a groove (10a); the outer spiral coil consists of two parts of a spiral tube (12a) and a connection tube (12b) of the inlet and the outlet of the spiral tube, and the shape of the cross section of the spiral tube (12a) is matched with that of the groove; and heat transfer mediums in the inner heat transfer tube (10) of the spiral coil and the outer spiral coil (12) flow to the opposite directions, and heat transfer mediums in the inner heat transfer tube (10) of the spiral coil and the outer spiral coil (12) flow to the opposite directions for completing the heat exchange through the wall surfaces which are contacted with each other. The utility model has the advantages of large heat exchange area, high heat transfer coefficient, reasonable runner arrangement, convenience in leak detection and examine and repair, and the like.

Description

Wound tube heat exchanger

Technical field

The utility model relates to a kind of heat-exchange device, particularly relates to heat exchange medium carries out exchange heat by the tube chamber wall that is in contact with one another device.

Background technology

Heat exchanger is a kind of common apparatus that is widely used in industries such as chemical industry, power, medicine, metallurgy, refrigeration, light industry.Heat exchanger of a great variety, classifying by the shape of its heat-transfer area and structure can be divided into cast, template and other pattern heat exchanger.Wherein the cast heat exchanger is to use the most a kind of heat transmission equipment type.Existing cast heat exchanger can be divided into coil heat exchanger, double pipe heat exchanger, shell and tube exchanger again.And in medium and small refrigeration plant, double pipe heat exchanger is to use the most a kind of heat transmission equipment type.

Existing double pipe heat exchanger is broadly divided into two kinds of coaxial-type and multi beam tubular types by version.

The structure of coaxial-type double-tube heat exchanger 1 such as accompanying drawing 1 and shown in Figure 4, coaxial sleeve is pressed the coaxial manner assembling by two different pipes of thickness, and extra heavy pipe 1 is outside, tubule 2 is interior, form two flow channels, extra heavy pipe and tubule are tightly connected by casing joint 3, and coaxial sleeve has the import/export and takes over 4.For increasing heat exchange area, interior tube-surface generally is processed into complicated shape, so tube wall is thicker; Outer tube is because caliber is bigger, and tube wall is also thicker, and the whole cost of heat exchanger is higher.When heat exchanger need curve complicated shape, be difficult to guarantee that in the knee two pipes are coaxial, the fluidised form of intraductal heat exchange medium there is certain influence.

The structure of multi beam tubular type double-tube heat exchanger such as accompanying drawing 2 and shown in Figure 5, forming a tube bank 5 by much thinner heat-transfer pipes is through in the multibeam tube sleeve pipe 6, multibeam tube sleeve pipe 6 is provided with the import/export and takes over 9, the outside wall surface of tube bank and the internal face of extra heavy pipe and cover channel closure 7 form a runner, 8 another passages of formation are taken in the logical multibeam tube import/export of inserting in parallel of tubule bundle, and two kinds of heat transferring mediums carry out heat exchange by tubule bundle wall.Because the caliber of every tubule is less, tube wall can be very thin, so cost is lower.But this structure also has disadvantageous one side: the tube wall between (1) two media is very thin, flat easily flat, leakage when curving complicated shape, and when using water as medium, resistance to frost is bad during low temperature.When (2) multibeam tube was in parallel, solder joint was many, leak detection, maintenance complexity, and the scrappage in the process is higher; Solder joint all contacts with two kinds of heat transfer mediums, is corroded easily, influences service life.

The utility model content:

For solving the weak point that above-mentioned prior art exists, the utility model provides that a kind of heat exchange area is big, heat transfer coefficient is high, runner connection and reasonable arrangement, leak detection, overhaul pipe heat exchanger easily.

The utility model technical solution problem adopts following technical scheme:

Wound tube heat exchanger, it has around the intraductal heat transfer pipe and outer its design feature is: the wall of two runners closely contacts by canoe around two runners of pipe, and described interior heat-transfer pipe outer surface is provided with groove; Have winding pipe and winding pipe import and export adapter two parts composition around pipe outside described, the cross sectional shape of described winding pipe and trench cross section shape match; Finish heat exchange around intraductal heat transfer pipe and the mutual reverse flow of heat transferring medium in managing outward by the wall that is in contact with one another.

Design feature of the present utility model also is:

Heat-transfer pipe outer surface groove is a helical form in described, and is outer in the winding pipe of pipe is spirally wound in the groove of heat-transfer pipe.

Described winding pipe has many, forms multi-form runner with in parallel or/and connect each other, and described winding pipe is imported and exported to be communicated with between the adapter with winding pipe respectively and formed a plurality of interface channels.

Heat-transfer pipe combines closely tube wall with the outer heat-conducting glue that adopts on the contacted tube wall of the winding pipe of pipe in described.

Compared with the prior art, the beneficial effects of the utility model are embodied in:

1, interior heat-transfer pipe runner of the present utility model can be processed into complicated shape, has increased the heat exchange area of unit tubing, has increased the disturbance of heat exchange flow body medium, has improved heat transfer coefficient;

2, outer heat-transfer pipe runner of the present utility model can have different the variation, is convenient to the optimal design of system.

3, all solder joints of the utility model expose, and leak detection, maintenance are conveniently;

4, there is the twice metal pipe-wall to be separated by between the utility model two fluids, reduced the probability of mutual seepage, prolonged the service life of product.

5, the utility model should outer heat-transfer pipe in interior heat-transfer pipe outer surface groove, adopt heat-conducting glue that the tube wall of inner and outer pipes is combined closely, to reduce the heat conduction thermal contact resistance; Be further enhancing heat transfer,, make the mobile turbulent flow that becomes of heat transfer medium further with the groove processing curl.

6, the utility model is drawn materials conveniently, and manufacturing process is simple, and cost is low.

Description of drawings:

Fig. 1 is existing coaxial-type heat exchanger structure schematic diagram.

Fig. 2 is existing multibeam tube heat exchanger structure schematic diagram.

Fig. 3 is the utility model structural representation.

Fig. 4 is the profile of Fig. 1.

Fig. 5 is the profile of Fig. 2.

Fig. 6 is the profile of Fig. 3.

Fig. 7 is the embodiment schematic diagram.

Number in the figure: 1 coaxial sleeve extra heavy pipe, 2 coaxial sleeve tubules, 3 casing joints, the adapter of 4 coaxial sleeve import/exports, the tube bank of 5 multi beam tubular type double-tube heat exchangers, 6 multibeam tube sleeve pipes, 7 cover channel closures, 8 multibeam tube import/exports are taken over, 9 multibeam tube sleeve pipe import/exports are taken over, 10 around intraductal heat transfer pipe, 11 outside outside pipe import/export adapter, 12 around pipe, 13 air side heat exchangers, 14 blower fans, 15 compressors, 16 wound tube heat exchangers, 17 cooling water runners, 18 fluorine Lyons runners, 19 expansion valves.

Below pass through the specific embodiment, and the utility model is described in further detail in conjunction with the accompanying drawings.

The specific embodiment, non-limiting examples is as described below:

Embodiment: as Fig. 3 and shown in Figure 6, wound tube heat exchanger, it has around intraductal heat transfer pipe 10 and outer around managing 12 two runners, and interior heat-transfer pipe 10 outer surfaces are provided with six spiral groove 10a; Have winding pipe 12a and winding pipe import and export adapter 12b two parts composition around pipe outward, the six roots of sensation is arranged, form multi-form runner with parallel connection each other, winding pipe 12a two ends are imported and exported to take over to be communicated with between the 12b with winding pipe respectively and are formed a plurality of interface channels, the cross sectional shape of winding pipe 12a and trench cross section shape match, and winding pipe 12a is spirally wound in the groove of interior heat-transfer pipe; Around intraductal heat transfer pipe 10 with finish heat exchange around the mutual reverse flow of heat transferring medium of managing in 12 by the wall that is in contact with one another outward.Heat-transfer pipe combines closely tube wall with the outer heat-conducting glue that adopts on the contacted tube wall of the winding pipe of pipe in the present embodiment.

Winding pipe in the present embodiment can be one also can be many, when twining many of tubular types, can take parallel way also can take series system to connect between each winding pipe.

Groove in the present embodiment also can adopt the mode parallel with interior heat-transfer pipe to arrange many, and trench cross section can be semicircle or trapezoidal or other plastic shapes, and winding pipe shape and the groove around pipe matches outward, with canoe two runner walls closely contacted.

As shown in Figure 7, present embodiment is a water-cooled cold wind unit, is the cooling cycle system that main parts size constitutes a sealing with air side heat exchanger 13, blower fan 14, compressor 15, wound tube heat exchanger 16, cooling water runner 17, fluorine Lyons runner 18, expansion valve 19.During work, the chlorofluoromethane refrigerant steam of high temperature, high pressure is discharged by compressor 15, in fluorine Lyons runner 18 in wound tube heat exchanger 16, the condensation heat release becomes liquid, through in air side heat exchanger 13, evaporating after expansion valve 19 step-downs, absorb heat in blower fan 14 blow out air, return compressor 15 recompressions, form a circulation; Cooling water enters in the cooling water runner 17 in the wound tube heat exchanger 16, flows out after absorbing fluorine Lyons liberated heat.

Claims

1. wound tube heat exchanger, it has around intraductal heat transfer pipe (10) and outer it is characterized in that: the wall of two runners closely contacts by canoe around (12) two runners of pipe, and described interior heat-transfer pipe (10) outer surface is provided with groove (10a); Have winding pipe (12a) and winding pipe import and export adapter (12b) two parts composition around pipe outside described, the cross sectional shape and the trench cross section shape of described winding pipe (12a) match; Around intraductal heat transfer pipe (10) and outside finish heat exchange around the mutual reverse flow of heat transferring medium of pipe in (12) by the wall that is in contact with one another.

2. wound tube heat exchanger according to claim 1 is characterized in that: heat-transfer pipe (10) outer surface groove is a helical form in described, outward in the winding pipe (12a) of pipe (12) is spirally wound in the groove of heat-transfer pipe.

3. wound tube heat exchanger according to claim 1 and 2, it is characterized in that: described winding pipe (12a) has many, form multi-form runner with in parallel or/and connect each other, described winding pipe (12a) is imported and exported to be communicated with between the adapter with winding pipe respectively and is formed a plurality of interface channels.

4. wound tube heat exchanger according to claim 1 and 2 is characterized in that: heat-transfer pipe combines closely tube wall with the outer heat-conducting glue that adopts on the contacted tube wall of the winding pipe of pipe in described.