CN2064876U - Concave convex board type air-air heat exchanger - Google Patents

Abstract

The utility model discloses a concave convex plate type air-air heat exchanger, in particular to a new plate type air-air heat exchanger which is used as an exhausting energy-recovery device in a ventilation system or an air conditioning system, comprising concave convex cones which are arranged in cross arrangement or in-line arrangement, heat exchange elements with Yin and Yang flanging, a frame, and a wedge-shaped flow-guiding inlet. The utility model has the advantages of high thermal efficiency, compact structure, easy manufacture, and low cost, and is suitable for using as the exhausting energy-recovery device in the ventilation system or the air conditioning system.

Description

Concave convex board type air-air heat exchanger

The utility model relate to a kind of ventilate or air-conditioning system in as the plate type air-air heat exchanger of Air Energy Recovery Device.

Ventilate or the economy of air-conditioning system exhaust air energy recovery in order to improve, the energy recycle device that is adopted should have higher heat exchange efficiency, lower air drag and price.At present, the external general Air Energy Recovery Device that adopts finned plate type air-air heat exchanger (being also referred to as plate-fin heat exchanger) as a kind of ventilation or air-conditioning system.This heat exchanger is made up of the several layers heat exchange element.The structure of heat exchange element as shown in Figure 1, clip a corrugated heat transmission fin 3 in two flat partition boards 1, two ends form the basic heat exchange element of one deck with side slat 2 sealings, the basic heat exchange element stack welding (generally adopting soldering) that many layers are so has just constituted plate-fin heat exchanger.The advantage of this heat exchanger is a compact conformation, and heat exchange efficiency is higher.But because China's soldering processes are very not universal, and its technology more complicated, therefore the price of the plate-fin heat exchanger that goes out of domestic production is all higher, and owing to adopted fin to come augmentation of heat transfer, the import and export place of heat exchanger does not establish guiding device yet, causes the air drag of plate-fin heat exchanger higher yet.Because above problem, plate-fin heat exchanger are not suitable as energy of exhaust air retracting device in ventilation or the air-conditioning system.

In order further to simplify the manufacturing process of plate type air-air heat exchanger, reduce its price and air drag, so that it is suitable for as energy of exhaust air retracting device in ventilation or the air-conditioning system, the engineer of states such as Australia has developed the board-like air-air heat exchanger of a kind of plastics again, there is not fin in its heat exchange element, but all have the post of disturbing that diameter is 1.5～2.5mm on the every dividing plate, between two dividing plates by hot pressing or bonding connecting together, constituted one deck heat exchange element, the such heat exchange element of many layers link together (also being) by hot pressing or bonding method made the board-like air-air heat exchanger of plastics that band is disturbed post.In this heat exchanger, disturb the rigidity that post promptly can increase heat exchange element, can play the purpose of augmentation of heat transfer again, therefore the heat exchange efficiency of this heat exchanger is also higher, and price is also low than plate-fin heat exchanger.But this heat exchanger can only be easy to the material manufacturing of moulding with plastics etc., processing technology is more complicated also, and because the heat conductivility of plastics itself is relatively poor, disturb post and can't play the effect of expanding heat-transfer surface, thereby cause its structural compactness and plate-fin heat exchanger to differ bigger, and because the structure of its air import and export is identical with plate-fin heat exchanger, the drag losses of import and export place air is not reduced yet.

The purpose of this utility model is that a kind of novel plate type air-air heat exchanger will be provided, this heat exchanger promptly has higher heat exchange efficiency and lower air drag, do not need complicated manufacturing process again, price is lower, with as ventilate or air-conditioning system in the energy of exhaust air retracting device.

The purpose of this utility model is achieved in that utilizes special-purpose diel, with thickness is the heat-transfer surface that the thin aluminum sheet (or plastic plate) of 0.2～0.4mm strikes out the conical concavo-convex and yin, yang flange that has cross arrangement (or in-line arrangement), two identical heat-transfer surfaces are by the combination of yin, yang flange, form the heat exchange element that has yin, yang flange and wedge type water conservancy diversion inlet, the such heat exchange element of many layers combined, and constituted concavo-convex board-like air-air heat exchanger.Conical concavo-convex one side has played increase heat-transfer surface rigidity, the effect of stationary conduit height, played the effect that band is disturbed the expansion heat-transfer surface of fin in the augmentation of heat transfer effect of disturbing post in the board-like air-air heat exchanger of plastics of post and the plate-fin heat exchanger that is similar on the other hand again, thereby guaranteed that promptly this heat exchanger has higher heat exchange efficiency, has structural compactness preferably again.Owing to adopted the yin, yang flange, therefore the connection of each layer heat exchange element only need and be coated with fluid sealant and can realize by means of yin, yang combination and simple mechanical compaction in this heat exchanger, and does not need the soldering processes of complex and expensive.Owing to adopted wedge type water conservancy diversion entrance structure, can reduce the resistance of air turnover heat exchanger.

Because it is fairly simple that manufacturing has the required mould of conical concavo-convex heat-transfer surface, required equipment (forcing press) is again that mechanical processing industry is commonplace.After adopting the yin, yang flange, the connection of each layer heat exchange element only needs by means of yin, yang combination and simple mechanical compaction and is coated with fluid sealant and can realizes, and does not need complicated soldering processes.Therefore, from technological angle, the manufacturing of concavo-convex board-like air-air heat exchanger is much simpler than the manufacturing of plate-fin heat exchanger, thereby can reduce cost of the present utility model.Secondly, after adopting taper shape concavo-convex, can produce perturbation action to air-flow, thereby strengthen the heat convection between air and the heat-transfer surface greatly, guarantee this heat exchanger and had that the plate type air-air heat exchanger of disturbing post is the same a higher heat exchange efficiency.Once more, because taper shape is concavo-convex and heat-transfer surface is an integral body, its thickness is identical, therefore they can play the effect of expansion heat exchange area, add and adopted less channel height (3～4mm), therefore, structural compactness of the present utility model is disturbed post than band the structural compactness of the board-like air-air heat exchanger of plastics is good, and is approaching with the structural compactness of plate-fin heat exchanger.

Concrete structure of the present utility model is provided by accompanying drawing and following explanation.Fig. 2 is flat, the profile of concavo-convex board-like air-air heat exchanger heat-transfer surface,, cloudy flange 2 concavo-convex 1 comprising taper shape and positive flange 3.Get two identical heat-transfer surfaces, one positive flange wherein is inserted in the cloudy flange of another piece, then cloudy flange is compressed, and coat fluid sealant 4(referring to Fig. 3) in the end of yin, yang flange combination, promptly form the heat exchange element of one deck band wedge type water conservancy diversion inlet 5, adopt this way that many layer passages are linked together, and put into ready framework 6(and see Fig. 4), promptly formed concavo-convex board-like air-air heat exchanger 7.Air draft 8 and new wind 9 utilize the air draft energy respectively along carrying out energy exchange by heat-transfer surface in the passage inflow heat exchanger 7 separately thereby reach, and new wind of precooling (or preheating) and energy reclaim purpose.Can resemble between new wind and the air draft that to be cross-current Fig. 4 moving, also can resemble and be counter-current flow Fig. 5.

Claims (6)

1, be applied to ventilate or air-conditioning system in as the concavo-convex board-like air-air heat exchanger of energy recycle device, form by many layer heat exchange elements and framework, it is characterized in that heat exchange element is made up of the heat-transfer surface of conical concavo-convex 1 and the yin, yang flange 2 that have cross arrangement, adopt wedge-shape diversion inlet 5.

2, equipment according to claim 1 is characterized in that conical concavo-convexly arrange by in-line arrangement.

3, according to claim 1,2 described equipment, it is characterized in that each conical concavo-convex 1 horizontal spacing is 10～20mm, longitudinal pitch is 10～20mm, when conical concavo-convex 1 fork is arranged, adopts equilateral triangle to arrange.

4, according to claim 1,2,3 described equipment, it is characterized in that conical concavo-convex height is 1.75～2.5mm, the bottom external diameter is 1.5～2mm, coning angle is 7 °～10 °.

5,, it is characterized in that the angle of wedge-shape diversion inlet 5 is 4 °～10 ° according to claim 1,2,3,4 described equipment.

6,, it is characterized in that the used material of heat exchanger is plastics according to claim 1,2,3,4,5 described equipment.

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