CN2164009Y - Low-temp heat-pipe heat exchanger - Google Patents

Abstract

The utility model relates to a gas to gas type low-temp heat-pipe heat exchanger. The device comprises heat pipe elements composed of actuating medium aluminium finned pipes or aluminium-plastic finned multiple-unit pipes arranged into equilateral triangles according to a certain row distance by data and amounted in a frame where tightly sealed inner walls on both ends are processed into conduits and evacuated. The heat pipe exchanger not only has the inherent advantages of big capacity of heat transmission, small difference in temperature, light in weight, small volume, quick thermal response, etc., but also has the advantages of installation with convenience, simple maintenance, long service life, small drag loss, easy separating between the inlet and outlet ducts, non mutual leakage, etc. As an ideal energy conservation product for the air saving, ventilating and heat recovery device, temperature equalizer and solar collector, the coefficient of heat recovery is above 69 to 80 percent.

Description

Low-temp heat-pipe heat exchanger

The utility model relates to a kind of gas---gas formula low temperature heat pipe heat exchanger.

Before this, energy recycle device is not established in domestic most of air-conditioning system ventilations, causes a large amount of losses of energy.In order to implement the energy policy that country determines---exploitation and saving are laid equal stress on, in the recent period be placed on preferential position energy-conservation, the recovery of energy that begun to consider to take a breath of many places, that uses at present has a thermal wheel from external introduction, and the plate type heat exchanger of domestic own production is arranged.Thermal wheel is that to make the cylindrical runner of honeycomb fashion by asbestos that are soaked with lithium chloride or aluminium foil be core body, and outsourcing is provided with drive unit with casing, during the runner low speed rotation, runner 1/2 in heat release zone, closely link to each other with exhaust duct.The sealing gasket of whippy heat-resisting antifriction has been installed, to reduce the seepage between new wind, air draft between the end face of runner and the gap of side panel.When high temperature air when the runner, heat is absorbed by runner, when runner goes to low-temperature space, the heat that is absorbed is emitted, and realizes heat transfer between new wind, air draft with this.This exchanger heat rate of recovery is higher, in light weight.But its drag losses is big, volume is big, easily stop up, easy cleaning not, topmost problem is that it can't tightly separate new wind and air draft, in heat transfer process, easily inflammable, explosive, poisonous, the harmful substance of discharging are leaked in the new wind, smell and bacterium are shifted, form cross pollution, be unfavorable for health and safety in production.Plate type heat exchanger is to put an aluminium wing on the aluminium flat board, puts an aluminum flat board then thereon, and an elementary cell is formed with the sealing of edge strip of paper used for sealing in both sides, is made of the core body of plate type heat exchanger many elementary cells.Air draft and new wind intersect respectively by adjacent elementary cell, because the temperature difference that exists between new wind and the air draft, heat reaches low temperature side by the aluminium sheet fin from high temperature side, realize heat transfer between new wind and the air draft with this.Plate type heat exchanger exists shortcomings such as volume is big, and weight is big, and heat recovery rate is low, and the pressure loss is big equally.

The purpose of this utility model be exactly utilize heat pipe principle design a kind of simple in structure, volume is little, in light weight, low temperature heat pipe heat exchanger that the thermal efficiency is higher, make it have not only that to tie up the intrinsic heat output of pipe big, have a narrow range of temperature, in light weight, volume is little, characteristics such as thermal response is rapid, but also have easy for installation, easy to maintenance, long service life, drag losses is little, advance, be convenient between the air draft runner separate, advantage such as do not leak through with each other is applicable to as air conditioning,, the desirable energy-conserving product of aspect such as ventilation, waste-heat recovery device.

Low temperature heat pipe heat exchanger be by many heat-pipe elements by certain ranks spacing, adopt the equilateral triangle arrangement, bunchy is contained in the frame case, the bringing-up section and the radiating segment of heat pipe is separated the formation low temperature heat pipe heat exchanger with a dividing plate.Heat-pipe elements system is made of sealed at both ends aluminum finned tube or aluminium core pipe and heat-conducting plastic fin multiple tube, and inwall is processed with conduit, vacuumizes (* 10 through cleaning ^-6), inject the liquid working substance of best filling amount.Working medium can according to the different temperatures of air draft, new wind fill respectively with adapt as liquid working substances such as ammonia, acetone.The framework of low temperature heat pipe heat exchanger, housing, the rubber seal post at median septum and heat-pipe elements middle part is separated into two air flow channels to heat exchange of heat pipe.High temperature air is heated heat pipe one end when the heat exchange of heat pipe bringing-up section, and the working medium vaporization in the heat pipe absorbs heat of vaporization from thermal source, and vaporization back steam flows and meets the condensation knot and emit latent heat to radiating area to the other end.The effect of condensate liquid nationality capillary force and gravity refluxes, and the reciprocation cycle that continues to be heated is delivered to radiating area with a large amount of heats from the thermal treatment zone, and the heat transmission is that phase transition process by working medium carries out in the heat pipe.

Low temperature heat pipe heat exchanger described in the utility model can transmit heat under the little temperature difference, the temperature difference is generally 6～16 ℃ between new wind of summer air-conditioning and air draft, and winter, the temperature difference was generally 20～50 ℃.Even the temperature difference has only 1 ℃, also can effectively conduct heat.Heat recovery rate summer is 20～60%, and be 60～80% winter.Owing to separate with median septum at framework and housing middle part, every heat-pipe elements all has rubber taper sealing column, the nationality acting force of the spring makes the bellmouth tight seal on cone seal post and the median septum, air draft side explosive, inflammable, poisonous, nuisance and bacterium peculiar smell etc. can not leak into new wind side, helps health and safety.Can change the pitch of fins of heat pipe fin according to dirty degree and the dustiness degree of advancing air draft, reduce and stop up, be easy to clean.Every heat pipe is an independently thermal conductor, and every heat pipe is convenient to assembling, changes, is cleaned, and when variations in temperature, element can free to contract and expand.

With reference to the accompanying drawings low temperature heat pipe heat exchanger structure described in the utility model is carried out detailed narration below.

Fig. 1 low temperature heat pipe heat exchanger structural representation.

Fig. 2 heat-pipe elements scheme of installation.

Wherein:

1. yoke plate 6. median septums 7. exhaust ducts 8. end plates 9. studs 10. nuts 11. pads 12. rubber taper sealing column 13. epoxy sealing mouths 14. cover plates 15. nozzles 16. holddown springs 17. water pipes 18. blower fans 19. blower fans 20. housings in framework 2. support plates 3. fresh wind tube roads 4. heat-pipe elements 5.

With aluminum finned tube or aluminium core pipe and heat-conducting plastic fin multiple tube, inwall is processed into a conduit and vacuumizes (* 10 after cleaning ^-6).Inject best filling amount liquid refrigerant, heat-pipe elements (4) is made with epoxy sealing mouth (13) in two ends.The appearance of low temperature heat pipe heat exchanger is a rectangular box formula framework (1) and board-like housing (20), upper and lower, left and right are sealed, inside is separated into two passes by median septum (6), be exhaust duct (7) and fresh wind tube road (3), scatter before and after the casing, and flange is arranged, can join with the outer tube flange that new wind and air draft are imported and exported.Heat-pipe elements (4) is passed median septum, and carry on a shoulder pole respectively on support plate at framework two ends (2) and end plate (8) at two ends.Median septum be fixed on framework and the middle yoke plate (5) that links with framework on.There is picture glue cone seal post (12) at the heat-pipe elements middle part, make rubber taper sealing column be pressed in bellmouth on the median septum closely by the effect of the holddown spring (16), stud (9), nut (10) and the pad (11) that are positioned at the support plate outside on the heat-pipe elements, heat-pipe elements is fixed.Heat pipe single tube element with some adopts the equilateral triangle arrangement by certain ranks spacing as required, and bunchy is contained in the framework, and seal with cover plate (14) at two ends.During use, as long as be placed on the appropriate location, by new wind, air draft is imported and exported pipeline and is communicated with indoor and outdoor, respectively puts a typhoon machine (18), (19) in newly wind and exhaust duct porch, just can operate as normal.In order to reclaim heat better, also can be connected to the nozzle (15) of water pipe (17) the dress number row of the heat pipe place at exhaust outlet place.

Claims (1)

1. A kind of low temperature heat pipe heat exchanger is characterized in that:

   (1) it is to be processed into conduit by inwall, in vacuumize and the heat-pipe elements that liquid working substance, sealed at both ends aluminum finned tube or aluminium-mould fin multiple tube constitutes is housed forms;

   (2) heat-pipe elements adopts equilateral triangle to be arranged to get one's things ready in the housing of framework by certain ranks spacing;

   (3) bringing-up section of heat pipe and radiating segment are by a central dividing plate separately.

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