CN1760547A

CN1760547A - Compressor intended to compress coolant fluid for a refrigeration or air conditioning installation

Info

Publication number: CN1760547A
Application number: CNA2005101199719A
Authority: CN
Inventors: J·德贝尔纳迪; Y·罗森
Original assignee: Danfoss Commercial Compressors SA
Current assignee: Danfoss Commercial Compressors SA
Priority date: 2004-10-05
Filing date: 2005-10-04
Publication date: 2006-04-19
Anticipated expiration: 2025-10-04
Also published as: US20060070398A1; FR2876165B1; CN100485188C; ITTO20050697A1; FR2876165A1

Abstract

A compressor intended to compress coolant fluid for a refrigeration or air conditioning installation, comprising a substantially vertical body consisting of a casing intended to receive in particular a lubricating liquid in its bottom portion forming a reservoir, and means of heating the lubricating liquid. The means of heating the lubricating liquid and means of acoustic insulation and thermal insulation situated below the heating means are placed close to the bottom wall of the casing.

Description

The compressor that is used for the cooling fluid of compression refrigeration or air-conditioning equipment

Technical field

The present invention relates to a kind ofly be used to freeze or the compressor that is used for compressing cooling fluid of air-conditioning equipment.

Background technique

When refrigeration or air-conditioning equipment when not coming into operation, the cooling fluid in refrigeration or the air conditioner loop migration phenomenon occurs in a kind of known mode.

Particularly, when compressor is in one than the low temperature of the temperature of heat exchanger the time, under temperature gradient effect, cooling fluid moves to compressor from heat exchanger.

When equipment was positioned at the open air, this phenomenon especially occurred in the morning, and heat exchanger is heated by sunlight, and it is faster that the solid components of its temperature ratio piston compressor raises, and the solid components of compressor has a bigger thermal inertia.

And after the sun set, this phenomenon took place with opposite direction, and cooling fluid is from the migration of compressor heat exchanger, heat exchanger ratio piston compressor cooling fast.

In these transport processes in the cooling circuit, cooling fluid moves by the different piece at cooling circuit, may condense and causes mechanical part to be cleaned, and takes away the fluid of the wall of lubricated these parts.

And in the housing of compressor, cooling fluid moves towards compressor, and cooling fluid is in the same place with mix lubricant, and the fluid of these two kinds of liquid forms is to mix easily, and mixture has the effect of the viscosity that reduces oiling agent.

Thereby when the loop recovered to use, because the cleaning of mechanical part and the reduction of lubricant viscosity, lubricant starvation caused the too early wearing and tearing of mechanical part of equipment, even damaged.

The known scheme that addresses this is that comprises: at first, and in the outlet of compressor, promptly discharge side safety check is set; The second, the heating compressor housing makes that thus oiling agent is retained in the housing.

The appearance of said temperature gradient has been avoided in heating, therefore, has also just avoided the appearance of migration phenomenon.

For safer, ideally, these two kinds of schemes can adopt together.

In existing compressor, described as document US 5252036, heating equipment is positioned at the sidewall of compressor.For preventing the more heat loss to the outside, a sealing ring is around heating equipment, to avoid distributing more heat to the external world.

Yet this layout is not very favorable, because it can not evenly heat oiling agent so that all oil is heated by utilizing the convection current in the housing usually.On the other hand, it also is disadvantageous being placed on sidewall, because its forced convection by wind causes a large amount of heat losss.

Document US 4208883 has been put down in writing a kind of device that is used for the temperature of oiling agent is carried out thermal conditioning, and document suggestion places heating equipment below the compressor.In the document, heating equipment is regulated by a device, and this makes the temperature controlling of oiling agent become possibility.

Yet, do not take measures to reduce the thermal loss that produces by radiation.

In the device of known type, be used for guaranteeing that the criterion that does not take place to move is to keep the oiling agent that comprises in the housing and the temperature difference between the external temperature about 10K by heating.

Thereby, need provide power about 75-150W for heating equipment.Must regulate power to adapt to the size of compressor.

Except migration phenomenon, the important techniques problem of the compressor of another relevant prior art relates to its acoustic emission.

In order to reduce the noise that these compressors send, a scheme of Cai Yonging is to cover compressor with a sound-absorbing cover in the prior art, uses this cover can obtain decay about 7dB, and is especially effective to the high frequency more than the 800Hz.

Yet, thisly be enclosed within that to reduce the low-frequency noise aspect send be not very effective, and it is made up of the device with labyrinth, labyrinth has comprised different materials, compares its cost height with the cost of compressor.

In document JP 53 099504, put down in writing another kind of scheme, compressor main body is installed on the interior spring of a container, container itself is installed on the spring, this spring passes one deck sound insulation material, this material is positioned at a casing with solid or liquid foam form, and it is integrated that this casing and compressor are connected support.

Thereby the document has been put down in writing a complicated apparatus, and wherein compressor is contained in the container fully, and this configuration is feasible to enter latter's difficulty, and comprises the installation of the halfpace of support vessels, and this has increased the overall space demand of compressor.

Other documents as document JP 2,002 243211, have also been put down in writing the noise that device that a container therein holds compressor fully sends with reduction.

These install the shortcoming of also have living space demand, labyrinth and cost aspect.

Summary of the invention

The purpose of this invention is to provide a kind of compressor, under the space requirement and the condition of simple structure of restriction, the heating that its consumption that can be used to obtain institute's energy requirement reduces, and the sound output of sending reduction are especially under the low frequency situation.

Thereby, theme of the present invention is a kind of compressor that is used for the cooling fluid of compression refrigeration or air-conditioning equipment, it comprises the main body of a perpendicular and the heating equipment of lubricating fluid, main body is made up of a housing, this housing is used for receiving lubricating fluid especially in its bottom, to form a storage tank, wherein, the heating equipment of lubricating fluid is to place near the diapire of housing with the sound insulation and the thermal insulating device that are positioned at below the heating equipment.

Such configuration can be used to obviously reduce the heating power that lubricating fluid consumed, because thermal insulating device returns energy reflection to compressor, has eliminated the dissipation that wind produces.

The sound output that this configuration also can be used to send is reduced to a surprising degree, especially at low frequency region, because what send to a great extent on the diapire of housing is low frequency wave.

This configuration and advantage above-mentioned also are used for producing the space requirement of a minimum together.

Preferably, the support that is connected with compressor of sound insulation and thermal insulating device from a distance.

According to an embodiment, sound insulation and thermal insulating device comprise one deck insulating material at least.

Preferably, one deck insulating material comprises a porous material at least.

According to an embodiment, one deck insulating material comprises felt at least.

Preferably, one deck insulating material comprises a lamination coating at least.

Preferably, sound insulation and thermal insulating device also comprise a rigid support plate.

According to an embodiment, sound insulation and thermal insulating device also comprise a film, are used for protecting and the fixed insulation material.

Preferably, hot harmony seal has a top surface, and the shape of top surface has been supplied the shape of the diapire of housing at least in part basically.

According to an embodiment, heating equipment comprises at least one resistance, and this resistance links to each other with the diapire of housing in the outside of housing.

Preferably, at least one resistance links to each other with the diapire of housing by the adhesion device.

According to an embodiment, thermal insulation harmony seal keeps in position with respect to compressor main body by connection set.

Preferably, connection set comprises an at least one elastic clip and a substantially horizontal bump, and elastic clip keeps in position by a projection of clamping compressor, and hot harmony seal is pressed on the bump of connection set.

According to an embodiment, connection set quantitatively is at least two.

Preferably, hot harmony seal allows the connection base of compressor to pass.

According to an embodiment, compressor comprises that one covers the sound insulation cover of the main body of compressor.

The present invention also relates to a kind of thermal power machinery that adopts aforesaid compressor at least.

Description of drawings

In any case, with reference to the sketch of submitting to, explanation below will be expressly understood the present invention, as the example of an indefiniteness, describe an embodiment according to compressor of the present invention.

Fig. 1 is a perspective overall pattern;

Fig. 2 is the amplification profile along the II-II line of Fig. 1;

Fig. 3 has described the part perspective exploded view of the compressor among Fig. 1;

Fig. 4 has simply described the acoustic emission spectrum according to the compressor of prior art.

Embodiment

Fig. 1-3 has described according to the compressor 2 that is used for the cooling fluid of compression refrigeration or air-conditioning equipment of the present invention.This compressor comprises the main body 3 of a perpendicular, and main body 3 comprises a housing 4, and housing 4 is used for receiving a lubricating fluid 5 to form a storage tank especially in its bottom.

In this embodiment, compressor housing comprises a sidewall 11 and a substrate 6, substrate 6 has the intermediate portion 7 of a dish type, be used for forming the diapire of housing, it also comprises an attachment hole 9 and a backhaul part 13 by wheel rim 8 fringings of periphery, attachment hole 9 is used to be connected to first device 10 of a support 12, support 12 is positioned at the outside of peripheral wheel rim 8, and backhaul part 13 is made at the edge of plate 6, is directed downwards.

Sidewall 11 links to each other at wheel rim 8 with substrate 6, and the lower limb of sidewall 11 leans against on the outside of wheel rim 8 to form a bearing.

First connection set 10 is made up of a stud bolt 14 in a kind of known mode, stud bolt 14 is made by the elastic material of rubber-type, forms a base for supporting of compressor, and has a longitudinal opening, wherein place a bolt 15, this bolt 15 also is placed in the opening 16 of support 12.

According to an essential features of the present invention, compressor 2 comprises the heating equipment 17 of lubricating fluid 5, and this device 17 is placed near diapire 7 of housings, sound insulation and thermal insulating device 18 be placed on heating equipment 17 below.

Heating equipment is made up of a resistance 17, and resistance 17 is connected with the diapire 7 of housing, promptly in diapire 7 outsides, links to each other with the diapire of housing by adhesion device 19, and is connected on the external power supply by two connection leads 20.

Sound insulation and thermal insulating device 18 are made up of an element, and this element has a top surface, and the shape of this top surface has been supplied the shape of the diapire 7 of housing basically, and sound insulation and thermal insulating device 18 comprise following element, and these elements are up stacked from the bottom:

-one flat rigid support plate 22;

-one deck cellular insulant material 23, its shape have been supplied the shape of the diapire 7 of housing basically;

-one film 24 is made by plastic material, its protection and porous material kept in position, and in dull and stereotyped 22 periphery, film is glued or heat sealed to dull and stereotyped 22.

According to a variant embodiment, insulation material layer comprises felt.

According to another variant embodiment, insulation material layer comprises a lamination coating, for example glass fibre or asbestos.

Thermal insulation harmony seal 18 is with respect to compressor main body, remain on the appropriate location by second connection set 25, each second connection set 25 comprises an elastic clip 26 and a substantially horizontal bump 27, elastic clip 26 keeps in position by the backhaul part 13 of clamping compressor substrate 6, and hot harmony seal relies on the bump 27 of second connection set 25.

These second connection sets 25 are four quantitatively, are preferably in and quantitatively are at least two, depend on distortion.

Adopt second connection set, make that the hot harmony seal 18 of installation and removal is than being easier on compressor main body 2.

Thereby thin seal 18 is maintained at the appropriate location below compressor, 12 contacts of discord support, and the thin diapire of itself and housing is that heating equipment defines a casing.

This aspect that influences of protecting heating equipment 17 to avoid wind that is configured in is particularly useful, and this can not cause a large amount of thermal loss.In addition, heating equipment is placed on below the housing, thereby, the feasible even temperature mixing that in the latter, produces lubricating fluid by convection current.

Further, hot harmony seal 18 is separated with support, and this helps insulation.

Therefore, it is possible keeping a temperature with the electric power of about 50-60W, the result than the electric power of one type of prior art syringe lack many, so allow a less size of heating equipment power circuit.

The cross section that hot harmony seal 18 has a level passes to allow compressor to connect base 14.

In a kind of mode that oneself knows, according to the compressor acoustic emission spectrum of prior art a curve is arranged, as shown in Figure 4, the y axle is represented power P, and the x axle is represented frequency F.

As can be seen, compressor has a sizable emissive power on the frequency band that is positioned at about 600Hz on this curve.

Make the reduction that obtains emissive power at this frequency band become possibility according to configuration of the present invention, decay to approximately-5dBa.

Can not make that obtaining a tangible decay at this frequency band becomes possibility because cover the insulating bush of whole compressor main body, so this result is very important.

According to a variant embodiment, compressor also comprises sound insulation cover 28, shows with the dot and dash line that covers compressor main body 2.

This cover of affix makes becomes possibility in the decay that is positioned at the frequency band acquisition one about-7dBa that is higher than 900Hz.

According to the present invention, this cover of affix on the compressor make on entire spectrum obtain one total approximately-decay of 14dBa becomes possibility.

Because seal is in the effect on the frequency band and be enclosed within effect on the different frequency bands, has obtained this beyond thought result.

Although not explanation, the present invention is not limited to preferred embodiment described above, embodiment's example as indefiniteness; On the contrary, it comprises all variant embodiment in the content of claim hereinafter.

Therefore, might use which floor different insulating material.

Measurement to embodiments of the invention is also just quoted as proof as an example; These are measured different

Embodiment may be different.

Claims

1, a kind of compressor that is used for the cooling fluid of compression refrigeration or air-conditioning equipment, it comprises the main body of a perpendicular and the heating equipment of lubricating fluid, main body is made up of a housing, this housing is used for receiving lubricating fluid especially in its bottom, to form a storage tank, wherein, the heating equipment of lubricating fluid is to place near the diapire of housing with the sound insulation and the thermal insulating device that are positioned at below the heating equipment.

2, compressor as claimed in claim 1 is characterized in that, the support that sound insulation and thermal insulating device are connected with compressor from a distance.

As the described compressor in one of claim 1 and 2, it is characterized in that 3, sound insulation and thermal insulating device comprise one deck insulating material at least.

4, compressor as claimed in claim 3 is characterized in that, one deck insulating material comprises a porous material at least.

As the one or more described compressor in claim 3 and 4, it is characterized in that 5, one deck insulating material comprises felt at least.

As the one or more described compressor among the claim 3-5, it is characterized in that 6, one deck insulating material comprises a lamination coating at least.

As the one or more described compressor among the claim 3-6, it is characterized in that 7, sound insulation and thermal insulating device also comprise a rigid support plate.

As the one or more described compressor among the claim 3-7, it is characterized in that 8, sound insulation and thermal insulating device also comprise a film, be used for protecting and the fixed insulation material.

As the one or more described compressor among the claim 1-8, it is characterized in that 9, hot harmony seal has a top surface, the shape of top surface has been supplied the shape of the diapire of housing at least in part basically.

As the one or more described compressor among the claim 1-9, it is characterized in that 10, heating equipment comprises at least one resistance, this resistance links to each other with the diapire of housing in the outside of housing.

11, compressor as claimed in claim 10 is characterized in that, at least one resistance links to each other with the diapire of housing by the adhesion device.

As the one or more described compressor among the claim 1-11, it is characterized in that 12, thermal insulation harmony seal keeps in position with respect to compressor main body by connection set.

13, compressor as claimed in claim 12, it is characterized in that, connection set comprises an at least one elastic clip and a substantially horizontal bump, and elastic clip keeps in position by the projection of clamping compressor, and hot harmony seal is pressed on the bump of connection set.

14, compressor as claimed in claim 13 is characterized in that, connection set quantitatively is at least two.

As the one or more described compressor among the claim 1-14, it is characterized in that 15, hot harmony seal allows the connection base of compressor to pass.

As the one or more described compressor among the claim 1-15, it is characterized in that 16, compressor comprises that one covers the sound insulation cover of the main body of compressor.

17, a kind of thermal power machinery that adopts at least as the one or more described compressors among the claim 1-16.