CN100424440C - Cool heat exchanger having oscillation reducing structure - Google Patents

Abstract

The present invention discloses a cool heat exchanger having oscillation reducing structure, which is mainly characterized in that a soft pipe (4) is used for connecting an inlet port with an outlet port of a compressor (1) in a pipeline which forms a circulation loop of the cold heat exchanger. One end of the soft pipe is connected with a pipe joint (6), the other end of the pipe joint (6) is hermetically connected with the circulation loop, and a liner pipe (42) made of rigid materials is lined on the inner side of a pipe body (41) of the connecting position of the soft pipe (4) and the pipe joint. The pipe joint (6) comprises a fitting sleeve (61), a joint base (62) which is made of rigid materials and is fastened with the joint sleeve (61) together, and a flexible sealing ring (63) which is arranged between the joint sleeve and the joint base and tightly rings the outer side of the pipe body (41). After the technique of the present invention is used, a main vibration source in the circulation loop is effectively isolated, and therefore, the vibration and the noise can be absorbed and blocked by the soft pipe, the transmission and the enlargement of the vibration in the circulation loop are avoided, and the cool heat exchanger having oscillation reducing structure has the advantages of good vibration and noise reducing effects, tight sealing, and strong proposal enforceable performance.

Description

Cold and hot switch with vibration-proof structure

Technical field

The present invention relates to a kind of cold and hot switch, particularly a kind of cold and hot switch with vibration-proof structure.

Background technology

Existing cold and hot switch, basic structure as air-conditioner or refrigerator briefly is exactly a kind of cold and hot exchange cycles loop that is coupled together by metal tubes, wherein Zhi Leng operation principle is to realize heat exchange by this cold and hot exchange cycles loop, detailed process is roughly: the HTHP gaseous coolant (being cold-producing medium) that is produced by compressor is through condenser cooling becoming normal temperature high voltage liquid refrigerants, again through expansion valve capillary expanse becoming low-temp low-pressure liquid refrigerants, after the evaporimeter heat absorption, become the low pressure gaseous coolant, be recycled to compressor compresses and become the HTHP gaseous coolant, reach the effect of circularly cooling.

Above-mentioned common by metal tubes with compressor, condenser, the major defect of the cold and hot switch that parts such as evaporimeter link together is: the vibration meeting that compressor self produces in running passes to condenser by metal tubes, miscellaneous parts such as evaporimeter, even in the whole circulation loop, progressively transmit and enlarge, after this vibration runs up to a certain degree, its direct result is: the sealing property of influence or destruction metal tubes, accelerate the leakage rate of refrigerant, reduce the service life of cold and hot switch, in addition, this vibration is accompanied by a kind of generation of noise toward contact, need to make every effort to the smooth transmission avoiding this generation of vibration or block this vibration as far as possible in a word, in fact, low noise, high stability also is the manufacturer of this cold and hot switch and the problem that the consumer relatively pays close attention to always.

For blocking the smooth transmission of this vibration, the patent No. is ZL 99256087.X, publication number is: CN 2401767Y, name is called: the Chinese utility model patent of " domestic air conditioner with compressor circuit vibration-proof structure " has proposed a kind of pipeline vibration-proof structure of air-conditioner, mainly be to adopt flexible pipe to replace metal tube to connect parts such as the compressor of air-conditioner and condenser, the joint of flexible pipe is withheld the loose joint interface of moulding with the employing of the body of flexible pipe.Though flexible pipe has the transmission of blocking-up vibration of compressor; reduce the function of noise; but be applied on the air-conditioner; the body of flexible pipe and the joint of flexible pipe; that is to say; flexible pipe and compressor; condenser; the connection sealing property of evaporimeter: comprise that the tight ness rating of sealing and stability are most important; otherwise; the leakage of refrigerant will directly make reduce the service life of cold and hot switch; and the loose joint interface of withholding moulding can not stop the leakage of refrigerant effectively; because be positioned at flexible pipe and metal tubes joint; it is not comprehensive to tend to when withholding moulding impression; the irregular deformation of imprecision or flexible pipe; be easy to form refrigerant and can slowly climb leakage slit; especially after the long-term use of air conditioner, this defective is more obvious, and this also is that this technology is difficult to the major reason that large-scale promotion is used so far.

Summary of the invention

Technical problem to be solved by this invention is intended to provide the cold and hot switch that a kind of sealing property is better, have vibration-damping function and raising parts utilization rate.

For solving the problems of the technologies described above, the present invention proposes a kind of cold and hot switch with vibration-proof structure, comprises compressor, condenser, and evaporimeter; And the many pipelines that are used to be communicated with described compressor, condenser, evaporimeter, thereby the closed circuit that common formation can be carried out cold and hot exchange; At least one in the described many pipelines is used flexible pipe to connect; One end of described flexible pipe is connected with pipe joint, and the other end of described pipe joint then is tightly connected with described closed circuit, and described flexible pipe has the independent bushing pipe of being made by rigid material in the medial pad with the body of described pipe joint connecting part; Described pipe joint comprise fitting sleeve, by rigid material make and the plinth that tightens together with described fitting sleeve and, be arranged between described fitting sleeve and the plinth and lock ring at the flexible seal ring in the outside of described body.

After adopting the present invention; owing in existing cold and hot switch, used flexible pipe to be communicated with such as compressor; critical piece in the cold and hot switch such as condenser or evaporimeter; like this; the vibration meeting that is produced by vibration sources such as compressors is absorbed effectively by flexible pipe and blocks; avoid vibration in the whole circulation loop, progressively to transmit; diffusion even amplification; damping effect is very obvious; be equipped with above-mentioned dedicated pipe joint on this basis; after the long-term use of cold and hot switch; still can guarantee to operate in refrigerant in the closed circuit and leakage phenomenon can not occur slowly climbing because flexible pipe substitutes the metal tube in the former closed circuit; sealing property is good especially; independent bushing pipe is when phenomenon such as colliding with; can not involve the In-commission Rate of plinth, can improve the parts utilization rate, be particularly suitable for large-scale promotion and use.

Below will be by embodiment and the present invention is described in detail in conjunction with the accompanying drawings

Description of drawings

Fig. 1 is a structural representation of using the closed circuit of a kind of cold and hot switch of the present invention;

Fig. 2 is closed circuit shown in Figure 1 first kind of part section structural representation at the joint that is positioned at pipe joint and flexible pipe;

Fig. 3 is closed circuit shown in Figure 1 second kind of part section structural representation at the joint that is positioned at pipe joint and flexible pipe;

Fig. 4 is closed circuit shown in Figure 1 the third part section structural representation at the joint that is positioned at pipe joint and flexible pipe;

Fig. 5 is closed circuit shown in Figure 1 the 4th a kind of part section structural representation at the joint that is positioned at pipe joint and flexible pipe.

The specific embodiment

Because the refrigeration principle of refrigerator and air-conditioning (comprising) is roughly suitable, the loop direction of refrigerant gets final product and the air-conditioning of both cooling and heating or air-conditioning unit just utilize parts such as cross valve 7 to change when heating usually, therefore, the said goods is when implementing design philosophy of the present invention, therefore there is no the differentiation of essence each other, in diagram and specify Shi Junke and be referred to as cold and hot switch.

Being that example is concrete with common air conditioner below sets forth implementer's formula of the present invention, sees figures.1.and.2, and comprises compressor 1, condenser 2, and refrigeration part such as evaporimeter 3; And the many pipelines that are used to be communicated with refrigeration parts such as aforementioned compressor 1, condenser 2, evaporimeter 3, and the common therefrom formation closed circuit that can carry out cold and hot exchange; At least one in the described many pipelines is used flexible pipe 4 to connect; Preferred mode can be as shown in fig. 1, the refrigerant 5 that flexible pipe 4 is applied in the above-mentioned closed circuit is as far as possible imported or/and the pipeline of output compressor 1, this mainly is to consider that compressor 1 is the topmost vibration source that comprises all cold and hot switches of air conditioner, the transmission of blocking this vibration source partially or completely just can reduce the vibration of air conditioner ground significantly, shake and the noise that produces therefrom, obviously, the both direction of compressor 1 uses the soft pipe connection better effects if simultaneously, further, can can use in above-mentioned closed circuit in the pipeline that flexible pipe connects and as often as possible use, this will decide on the comfort level or the efficient of concrete production cost or product packaging technology.It is that processing, intercepting are convenient that flexible pipe connects another advantage that connects than metal tubes, and this advantage embodies more obviously when installing at the scene of family expenses air conditioner, abundant.

After using flexible pipe alternative metals pipeline, for guaranteeing the sealing property into and out of the import and export position of refrigerant of flexible pipe and compressor 1, the refrigerant 5 that operates in the described closed circuit can or be imported described flexible pipe 4 by pipe joint 6 outputs, this pipe joint 6 further comprise fitting sleeve 61, by rigid material make and the plinth 62 that tightens together with described fitting sleeve 61 and, be arranged between fitting sleeve 61 and the plinth 62 also lock ring at the flexible seal ring 63 in the outside of body 41; Flexible pipe 4 has the independent bushing pipe of being made by rigid material 42 in the medial pad with the body 41 of described pipe joint 6 connecting parts; the preferred mode of the present invention is that bushing pipe 42 is discrete with plinth 62; be separate production; organically combine by assembling; this embodiment and as shown in Figure 3 bushing pipe 42 and plinth 62 integrally formed structures are compared; though sealing property is weaker; but advantage also is very tangible: integrally formed bushing pipe 42 is being produced with plinth 62; transportation; in the process of assembling or even storage; usually can cause the outer surface of part bushing pipe 42 uneven because of reason such as collide with; use these pipe joints that collided with often obviously to reduce the sealing property of closed circuit reluctantly at this pipe joint place because of the liner poor effect of 42 pairs of bodys 41 of bushing pipe; therefore serious slightly colliding with just may cause the relatively costly whole plinth of cost to be scrapped; that is: the yield rate of integrally formed plinth 62 is lower; and independent production; the regular relatively bushing pipe 42 of profile will avoid the appearance of above-mentioned phenomenon such as collide with then more easier; even occurred, also can not involve the In-commission Rate of plinth 62 at this point.

The rigid material of above-mentioned making plinth 62, bushing pipe 42 generally be meant hard, have a less flexible metal, as steel, copper pipe or other alloy materials, can certainly use nonmetallic other materials as pottery or comparatively fine and close materials such as plastic-steel, preferably use those temperature deformation coefficient materials with smaller, this point is even more important for nonmetallic materials such as plastic-steel.Plinth 62 for pipe joint 6 is own, the compactness extent of material itself is more important, easier the meeting the demands of material air-tightness that compactness extent is high, and for bushing pipe 42, because its function mainly is used for as far as possible liner flexible pipe 4 equably, generally just requires it to have the on-deformable in other words characteristic of certain rigidity, rigidity.Because an end of pipe joint 6 is connected with flexible pipe 4, the other end other refrigeration parts in the closed circuit that need be tightly connected, such as compressor 1, use plinth 62 that metal material makes to realize and being tightly connected of compressor 1 by common welding or mode such as be threaded.Therefore, the material of above-mentioned making plinth 62, bushing pipe 42 can use metal material greatly at present, but in fact, the nonmetallic materials that satisfy above-mentioned requirements can substitute these metal materials fully, such as making plinth 62, bushing pipe 42 with dense plastic-steel material, re-use other general or known modes such as screw thread and realize and being tightly connected of compressor 1, still can satisfy the seal request of closed circuit.Need to prove: the present invention does not get rid of other connected modes between the parts in the closed circuits such as plinth 62 and compressor, as long as the concrete connected mode of using can guarantee the sealing property of interface.

Cavity in the pipe joint 6 is preferably cylindrical cavity, the internal diameter of this cylindrical cavity is consistent as far as possible with the internal diameter of described bushing pipe 42, reason is that the refrigerant in the closed circuit has the gas or the liquid of certain pressure often, for reduce the running resistance of refrigerant in closed circuit as far as possible, improve the operating mode of closed circuit and service life of improving unit.

The main effect of above-mentioned bushing pipe 42 is: the outer rear flank that prevents to rely at sealing ring 63 collar nut 61 lock ring bodys 41 on the one hand, the body 41 inside irregular deformations that may form and the slit that produces, can stop on the other hand: because of cooling or the amount of contraction that causes of other reasons during greater than sealing ring 63, what still can guarantee body 41 outsides and sealing ring 63 inboards evenly, closely contacts sealing at body 41.Therefore, described liner is meant that the internal diameter of the external diameter of bushing pipe 42 and flexible pipe 4 is roughly suitable, can make flexible pipe 4 closely be socketed in bushing pipe 42 ground lateral surfaces.

Described lock ring is meant that the medial surface of sealing ring 63 is close to as far as possible, is pressed together on the lateral surface of body 41, and the lateral surface of sealing ring 63 can be whole or in part or is accepted pressure from fitting sleeve 61 or plinth 62 directly or indirectly, thereby guarantees that as far as possible sealing ring 63, body 41 and bushing pipe 42 engage the tight ness rating and the sealing stability of sealing each other.Concrete embodiment can be realized by the precision of machining, also can realize by following optimal way.

With reference to accompanying drawings such as Fig. 2, engage sealing for further guaranteeing between sealing ring 63, body 41 and bushing pipe 42 threes, can on fitting sleeve 61, be wholely set the stop bit 612 of restricted sealing ring 63 displacements, purpose is to prevent that sealing ring 63 from long-term using outside displacement that back or other reasons cause, getting loose, can not be evenly thereby cause between body 41 and the bushing pipe 42, the phenomenon appearance of thorough seal; Described sealing ring 63 is a taper fillet surface 632 with described position-arresting ring 612 contacted end faces, and the internal spherical surface of described position-arresting ring 612 is the conicoid that can cooperate with described taper fillet surface 632.After above-mentioned design, on the one hand, sealing ring 63 can be positioned well, on the other hand, in fitting sleeve 61 and the constantly fastening process of plinth 62, promptly screw in the ground process, the internal spherical surface of position-arresting ring 612 can constantly be exerted pressure to the medial surface of body 41 by the sealing ring 63 of flexibility equably, afterburning, make the bonding tightness between body 41 and the bushing pipe 42 improve constantly, simultaneously, because sealing ring 63 is flexible, can produce extruding phenomenon to a certain degree between sealing ring 63 behind the pressurized and the adjacent component, like this, the contact gap of sealing ring 63 and plinth 62, contact gap between sealing ring 63 and the body 41, contact gap between the internal spherical surface of sealing ring 63 and position-arresting ring 612 is all further reduced, dual or multiple like this contact sealing can be satisfied the long-term requirement of using of air conditioner fully, and the refrigerant that no matter moves in closed circuit is liquid state or gaseous state.

Further, sealing ring 63 also can be designed to taper fillet surface 633 with plinth 62 contacted end faces, similarly, plinth 62 and the taper cannelure of sealing ring 63 contacted end faces for cooperating with described taper fillet surface 633, after adopting such design, bonding tightness between body 41 and the bushing pipe 42 not only can improve, and the uniformity of combination also can be improved.That is to say that two end faces of sealing ring 63 can be tapered end face simultaneously.

Elaborate the concrete fastening means between fitting sleeve 61 and the plinth 62 below again, at first with reference to Fig. 2, described fitting sleeve 61 is a collar nut, and the periphery of described plinth 62 can cooperate with described collar nut 61 screw threads 622.Be fitting sleeve 61 with described plinth 62 between cooperate fastening for external screw thread.Collar nut in the process that screws inwards, can rely on the cone match between the taper chamfering end face 632 of the internal spherical surface of above-mentioned position-arresting ring 612 and sealing ring 63 constantly compress flexible seal ring 63 and and then seal each contact-making surface, also can be after screwing collar nut, the lateral surface of flexible seal ring 63 rely on the machinery between the contacted medial surface with collar nut to cooperate or the machining accuracy lock ring in body 41 outsides.

With reference to Fig. 4, described fitting sleeve 61 is a track bolt, and described plinth 62 is provided with the screw thread 623 that can cooperate with described track bolt.Be fastening between fitting sleeve 61 and the described plinth 62 for screw-internal thread fit.Fastening and the sealing principle of this mode and above-mentioned shown in Figure 2 unanimous on the whole.

With reference to Fig. 5, described fitting sleeve 61 is a joint flange dish 615, described plinth 62 is provided with and can cooperates fastening flange face 625 with described joint flange dish, this flange face tightens together with universal mode such as bolt 9 and described joint flange dish again, promptly cooperates fastening for flange face between fitting sleeve 61 and the described plinth 62.From this embodiment, can also more clearly find out: position-arresting ring 612 both can be integrally formed with fitting sleeve 61, also can independent moulding, become a cushion block that is pressed together on flexible seal ring 63 outsides separately, even, can also use nonmetallic elastomeric material making such as rubber.In addition, such flange face 625 even can no longer directly design on plinth 62, such as, but the screw of clamp flange dish 615 can be set on the shell of the parts such as compressor of fixedlying connected with plinth 62, fitting sleeve in order to modes such as fastening above-mentioned joint flange dish 615, collar nuts, in other words, fitting sleeve 61 can be direct with plinth 62, also can tighten together indirectly.Concrete fastening mode is numerous, if its basic function or effect be used for enhanced leaktightness circle 63, body 41 just should be within protection scope of the present invention with the sealing that contacts between the adjacent component.

After using technology of the present invention, especially after the two ends of the input of compressor, output all use flexible pipe to connect, main vibration source in the closed circuit is just isolated out effectively, greatly simplified analysis, study condition to the concrete mechanism of production of the vibration of cold and hot switch whole system and noise, this is just for the research, the improvement that realize vibration damping, noise reduction technology further with improve very solid foundation is provided.

It needs to be noted, though being the hermetically-sealed construction to pipe joint, foregoing describes in detail, but, use the great advantage of such sealed fitting to remain vibration damping, noise reduction in cold and hot switches such as air conditioner, such effect is not to be that the those of ordinary skill that only designs sealed fitting reckons with easily.

In cold and hot switch, favorable damping, anti-acoustic capability and cost performance, all indispensable with perfect sealing property, overlook either of the two, this diligent always pursuit in the process of research and development, improvement technology that yet is those skilled in the art, do not give the target of thorough solution yet so far, the technical scheme that the present invention proposes has fully been taken into account three aspects: promptly vibration damping, noise reduction are remarkable, seal tightly, and improve the parts utilization rate.In addition, no matter be the installation of product assembly, still dismantle, keep in repair all very convenient, reducibility is good when promptly mounting and dismounting, in the production or installation process of reality, the also less influence that is subjected to operating personnel's technology operant level, therefore, the exploitativeness of scheme is very strong, and good market application prospect is arranged.

Claims (9)

1. the cold and hot switch with vibration-proof structure comprises compressor (1), condenser (2), and evaporimeter (3); And the many pipelines that are used to be communicated with described compressor (1), condenser (2), evaporimeter (3), thereby the closed circuit that common formation can be carried out cold and hot exchange; At least one in the described many pipelines is used flexible pipe (4) to connect; One end of described flexible pipe (4) is connected with pipe joint (6), the other end of described pipe joint (6) then is tightly connected with described closed circuit, it is characterized in that: described flexible pipe (4) has the independent bushing pipe of being made by rigid material (42) in the medial pad with the body (41) of described pipe joint (6) connecting part; Described pipe joint (6) comprise fitting sleeve (61), by rigid material make and the plinth (62) that tightens together with described fitting sleeve (61) and, be arranged between described fitting sleeve (61) and the plinth (62) also lock ring at the flexible seal ring (63) in the outside of described body (41).

2. the cold and hot switch with vibration-proof structure as claimed in claim 1, it is characterized in that: the position-arresting ring (612) that is wholely set restricted described sealing ring (63) displacement on the described fitting sleeve (61), described sealing ring (63) is taper fillet surface (632) with the contacted end face of described stop bit (612), and the internal spherical surface of described stop bit (612) is the conicoid that can cooperate with described taper fillet surface (632).

3. the cold and hot switch with vibration-proof structure as claimed in claim 1, it is characterized in that: described sealing ring (63) is taper fillet surface (633) with the contacted end face of described plinth (62), described plinth (62) and the taper cannelure of the contacted end face of described sealing ring (63) for cooperating with described taper fillet surface (633).

4. the cold and hot switch with vibration-proof structure as claimed in claim 2, it is characterized in that: described sealing ring (63) is taper fillet surface (633) with the contacted end face of described plinth (62), described plinth (62) and the taper cannelure of the contacted end face of described sealing ring (63) for cooperating with described taper fillet surface (633).

5. as claim 1,2,3 or 4 described cold and hot switches with vibration-proof structure, it is characterized in that: the refrigerant (5) that described flexible pipe (4) is applied in the described closed circuit is imported or/and export the pipeline of described compressor (1).

6. as claim 1,2,3 or 4 described cold and hot switches with vibration-proof structure, it is characterized in that: described fitting sleeve (61) is a collar nut, cooperates fastening for external screw thread between described fitting sleeve (61) and the described plinth (62).

7. as claim 1,2,3 or 4 described cold and hot switches with vibration-proof structure, it is characterized in that: described fitting sleeve (61) is a track bolt, is that screw-internal thread fit is fastening between described fitting sleeve (61) and the described plinth (62).

8. as claim 1,2,3 or 4 described cold and hot switches with vibration-proof structure, it is characterized in that: described fitting sleeve (61) is the joint flange dish, cooperates fastening for flange face between described fitting sleeve (61) and the described plinth (62).

9. as claim 1,2,3 or 4 described cold and hot switches with vibration-proof structure, it is characterized in that: the cavity in the described plinth (62) is a cylindrical cavity, and the internal diameter of described cylindrical cavity is consistent with the internal diameter of described bushing pipe (42).

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