CN1877229A

CN1877229A - One-way iron drying filter

Info

Publication number: CN1877229A
Application number: CN 200510049991
Authority: CN
Inventors: 陈枫; 张志军
Original assignee: Zhejiang Sanhua Refrigeration Group Co Ltd
Current assignee: Zhejiang Sanhua Climate and Appliance Controls Group Co Ltd; Zhejiang Sanhua Refrigeration Group Co Ltd
Priority date: 2005-06-06
Filing date: 2005-06-06
Publication date: 2006-12-13

Abstract

The invention relates to a one-way iron dry filter, used in the heat pump, air conditioner, or refrigerator, whose medium flows in one way. Wherein, two ends of iron element are connected to the inlet connecting tube and the outlet connecting tube to form the one-way flow structure; the element contains the macromolecule screen drying agent; it is characterized in that: said macromolecule screen drying agent and the inlet connecting tube have an advanced filter block and baffle net between them. With said invention, the coolant can be filtered and purified before contacting the drying agent, to fully utilize its functions that absorbing water and acid.

Description

One-way iron drying filter

Technical field

The present invention is a kind of device for drying and filtering, is applicable in the system of medium one-way flow, in heat pump and other air-conditioning systems or refrigeration system.

Background technology

In modern air conditioning system, heat pump or other refrigeration systems, device for drying and filtering generally uses, but it remains in many weak points: push, rub between the granular molecular sieve, and cause producing particle, these particles enter system, become the key factor the most of destroying filter and whole system; Molecular sieve abrasion are big, filter insufficiently, and molecular sieve is subjected to shortcomings such as pollution, drying capacity are adversely affected owing to directly contact cold-producing medium (medium) when filtering.When above-mentioned defective is used new cooling media in the large-size air conditioning system, because cold medium flux is big, pressure is high, shows more obvious.

The utility model content

The technical assignment of the technical problem to be solved in the present invention and proposition is that the molecular sieve that overcomes the existing product existence wears away big; filter insufficient; shortcomings such as molecular sieve is easily contaminated, drying capacity is adversely affected provide a kind of one-way iron drying filter that can fully filter, reduce to greatest extent when effectively protecting drier the molecular sieve abrasion to impurity.For this reason, the present invention takes following technical scheme:

A kind of one-way iron drying filter connects entrance sleeve and discharge connection and constitutes the one-way flow structure at irony body two ends, maintain molecular sieve desiccant in body; It is characterized in that being provided with between described molecular sieve desiccant and the entrance sleeve preposition filter block and backstop.

As the further of technique scheme improved and replenish, can adopt following concrete technical measures:

Two filter blocks are set in the described body, and described molecular sieve desiccant keeps between two filter blocks.

Described filter block upper support has spring force.

Be to hold backstop, helical spring and preposition filter block, filter block, middle backstop, filter block, molecular sieve desiccant, filter block, high accuracy filtering layer, end backstop from entrance sleeve to arranging successively between the discharge connection in the described body, described preposition filter block is positioned at helical spring.

Described body two ends adopt welding manner to be connected with end cap, and described entrance sleeve and discharge connection are welded on the end cap.

Maintain the gap between described preposition filter block and the body.

The present invention guarantees that by the mode of preposition filter block is set at the drier entrance point cold-producing medium must arrive filtration and purify before the contact drying agent, and drier is kept clean, and it absorbs the effect of water and acid with better performance; Entrance point at filter is equipped with spring, makes spring compressed dry drying prescription, avoids can having prolonged the service life of filter and whole system greatly because of the extruding that fluffs causes becoming particle between desiccant particle; The glass fibre that filters is lined with two-layer, places the entrance point and the port of export respectively, and one deck hole of entrance point is bigger, removes the solid impurity and the mud point of the overwhelming majority in the system, all residual impurities in the less final filtration system of filter course of second layer hole.This double shielding guaranteed drier can clean more, durable, the pressure of drier is fallen reduces to minimum.

Description of drawings

Fig. 1 is a kind of structural representation of the present invention.

Fig. 2 is the structural representation of the middle backstop in the structure shown in Figure 1.

Among the figure: 1. entrance sleeve, 2. inlet end cap, 3. the end backstop, 4. preposition filter block, 5. helical spring, 6. body, 7. filter block, 8. in the middle of backstop, 9. filter block, 10. molecular sieve desiccant, 11. filter blocks, 12. screen packs, 13. end backstops, 14. outlet end caps, 15. discharge connections.

The specific embodiment

Device for drying and filtering as shown in the figure specifies as follows by its actual production procedure:

Discharge connection 15 and outlet end cap 14 are connected by welding manner, make the two junction form closed structure;

Screen pack 12 and end backstop 13 are packed in the outlet end cap 14 by order shown in the figure;

Body 6 is inserted in outlet end cap 14 and makes it tightly suppress screen pack 12, end backstop 13, then body 6 and outlet end cap 14 are connected by welding manner, make the two junction formation closed structure;

Filter block 11, drier 10, filter block 9, middle backstop 8, filter block 7, spring 5, preposition filter block 4 are packed into successively by shown position;

Entrance sleeve 1 and inlet end cap 2 are connected by welding manner, make the two junction form closed structure;

End backstop 3 is put into 1 closed structure that is connected with 2, then itself and body 6 are press-fitted, again the two junction is connected by welding manner, make the two junction form closed structure.

Function and technical advantage to each member in the said structure is elaborated below:

The handling characteristics of end backstop: end backstop 3,13 is formed by thicker web plate (steel) punching out, lays respectively at the two ends of device for drying and filtering, can guarantee that cold-producing medium passes through smoothly, because material is thicker, the intensity height guarantees can not be out of shape under the cold-producing medium effect of high pressure; Between itself and the end cap is matched in clearance, has simplified assembly process than welding connecting mode in the past, and this is a very big improvement.

Take over the connected mode with end cap: for welding manner is connected, technology is easy, reliable between discharge connection 15 and outlet end cap 14 and entrance sleeve 1 and the inlet end cap 2.

Filtration: filtration composed as follows: the material of

filter block

4,7,9,11 is identical, be the glass fibre that filtering accuracy is 40 μ m (or its substitute), the material of filter screen 13 is that filtering accuracy is the stainless steel filtering net (or its substitute) of 20 μ m, below its effect in system is elaborated:

Filter block 4 has two-layer filtration, one is both surface filtration, one deck is an in-depth filtration in addition, and impurity is in the gathering of filter interior, always in the place of flow minimum, around filter block, spiral then, filter block is pressed to the exit, and further pushing filter block, when refrigeration circulation stops, filter block will relax and hide the partial impurities of assembling, and this part impurity will leave from pad.After system restart, these impurity just adhere on the filter block again immediately from airflow downstream, and the efficient of impurity screening is improved greatly;

Filter block 7 also plays cushioning effect to spring simultaneously except that the same function that plays with filter block 4;

Filter block 9 separates backstop and drier except that the same function that plays with filter block 4 simultaneously, has reduced backstop to greatest extent and has acted directly on pressure on the molecular sieve, prevents that drier from breaking, and has avoided the drier to stop up the backstop mesh simultaneously;

Filter block

4,7,9 all is positioned at before the drier, has formed the ground floor filter course jointly, cold-producing medium must be arrived before the contact drying agent filter purification, has avoided drier to be polluted;

Filter block 11 separates filter screen 12 and drier except that playing a role in filtering simultaneously, has reduced backstop 13 to greatest extent and has acted directly on pressure on the molecular sieve, prevents that drier from breaking, and has avoided drier to stop up filter screen 13 meshes simultaneously;

Filter screen 13 is the high accuracy filter screen, and cold-producing medium is played filtration to the end, removes most impurity in the cold-producing medium.

The effect of spring: spring one end is pressed on the backstop 3 of entrance point; the other end is pressed on the middle backstop 8; (separate with filter block 7 between middle backstop 8 and the spring; play cushioning effect); active force by spring compresses drier; avoid drier to produce friction each other because of loosening making; extruding and produce cracked; thereby better system is played a protective role; simultaneously this mode has overcome and spring is positioned over the port of export compresses drier mode shortcoming; because can the compressed dry drying prescription at the spring of filter outlet end; this effect makes the workflow of system carry out in the opposite direction of spring; and reduced the pressure that acts on the drier; cause can fluffing between desiccant particle, and then make its mutual extruding cause becoming particle, these particles are the small-sized grinding killers that destroy filter and whole system.In this sense, arrival end device spring together operates spring and refrigeration system, can the better protection drier.

The design feature of middle backstop: middle backstop 8 adopts thicker web plate punching out to form, shape such as Fig. 2, between it and the body 6 is matched in clearance, this structure has following characteristics: have guide frame, be easy to place assembling during assembling, may produce the shortcoming of deflection when having overcome the placement of Fig. 3, more help acting on spring compression drier thereon; Simultaneously, adopt matched in clearance, overcome in the past with between body and adopted win to cooperate needs to adopt the shortcoming that press-fits than big external force, simplified operation, improved reliability.

The handling characteristics of drier: drier is a particulate molecular sieve, and adopts bulk form, avoids porous in the past to burn the big shortcoming of casting core type drier circulating resistance, has guaranteed system's serviceability best.

Claims

1, a kind of one-way iron drying filter connects entrance sleeve and discharge connection and constitutes the one-way flow structure at irony body two ends, maintain molecular sieve desiccant in body; It is characterized in that being provided with between described molecular sieve desiccant and the entrance sleeve preposition filter block and backstop.

2, one-way iron drying filter according to claim 1 is characterized in that two filter blocks are set in the described body, and described molecular sieve desiccant keeps between two filter blocks.

3, one-way iron drying filter according to claim 2 is characterized in that described filter block upper support has spring force.

4, one-way iron drying filter according to claim 1, it is characterized in that holding backstop, helical spring and preposition filter block, filter block, middle backstop, filter block, molecular sieve desiccant, filter block, high accuracy filtering layer, end backstop from entrance sleeve to arranging successively between the discharge connection in the described body, described preposition filter block is positioned at helical spring.

5, one-way iron drying filter according to claim 1 is characterized in that described body two ends employing welding manner is connected with end cap, and described entrance sleeve and discharge connection are welded on the end cap.

6, one-way iron drying filter according to claim 1 is characterized in that maintaining the gap between described preposition filter block and the body.