CN2148927Y

CN2148927Y - Long's refrigerating machine

Info

Publication number: CN2148927Y
Application number: CN 92230293
Authority: CN
Inventors: 龙扬名
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-08-07
Filing date: 1992-08-07
Publication date: 1993-12-08
Anticipated expiration: 2002-08-07

Abstract

The utility model relates to a long's refrigerating machine of the refrigerating machine core, comprising a compressor, a heat radiator, a filter, a heat regenerator, a pre-cooler, a throttle orifice, an expander, and a shell. The long's refrigerating machine is characterized in that the compressor to the heat radiator to the filter to the heat regenerator to the pre-cooler to the throttle orifice to the expander to the heat regenerator to the compressor are connected in sequence to form the refrigerating machine core. The long's refrigerating machine uses the adiabatic expansion heat absorption after the high-pressure gas throttle to obtain the low-temperature refrigerating device. The both ends of the heat regenerator shell are welded with metal plates, a gas pipe is welded along the centerline of the shell, and the gas outlet pipe and the gas inlet pipe are all welded on the side face of the shell.

Description

Long's refrigerating machine

The utility model relates to a kind of refrigeration machine, a kind of refrigeration machine that utilizes gases at high pressure throttling expansion refrigeration

At present, known compression refrigerating machine is to utilize low-boiling point liquid vaporization absorption refrigeration principle and the refrigerating plant made, and refrigerator, air-conditioner and other the large-scale compression refigerating machine made according to compression refrigerating machine principle, structure have obtained using very widely.With regard to refrigerator, at present, tens million of of whole world annual outputs, millions of in China.

Compression refrigerating machine is by compressor, condenser, filter, capillary, evaporimeter is formed the refrigeration system of a sealing, in refrigeration system, pour into low boiling point refrigerant, compressor relies on the power of motor to order about cold-producing medium reciprocation cycle in refrigeration system, filter by filter again after promptly being liquefied by condenser by the high temperature and high pressure gaseous refrigerant after the compressor compression, liquid refrigerant is by capillary-compensated step-down inflow evaporator, in evaporimeter, liquid refrigerant is vaporized rapidly and is absorbed extraneous heat acquisition low temperature, the low-pressure low-temperature gaseous refrigerant is sucked compression again, so circulation by compressor.

There is following shortcoming in compression refrigerating machine: 1. compression refrigerating machine must use lower boiling cold-producing medium, and the refrigerator of countries in the world production at present, air-conditioner mostly uses a kind of cold-producing medium-freon R12(CF that atmospheric ozone layer is had destruction ₂CI ₂).2.R12 be the cold-producing medium of a kind of latent heat of vaporization very little (40KcaI/Kg).Therefore, refrigeration machine refrigerating capacity low power consumption is big; 3.R12 normal boiling point-29.8 ℃, therefore, be that the compression refigerating machine of cold-producing medium can not obtain than-29.8 ℃ of lower low temperature with R12, promptly can not cryogenic refrigeration; 4. in the refrigeration system of compression refrigerating machine, high pressure liquid refrigerant (as R12) is to flow into evaporimeter by filter through a thin and long capillary, linear loss when high pressure liquid refrigerant flows in capillary is very big, like this, must increase the output work of compressor, power consumption is increased.

The purpose of this utility model provides a kind of refrigeration machine, and a kind of gases at high pressure throttling expansion refrigeration of utilizing is not used freon refrigerant, and refrigerating capacity is strong, and cryogenic temperature is low, saves the refrigeration machine of electric power.

Accompanying drawing 1 is a composition diagram of the present utility model.It by compressor 1, radiator 2, filter 3, regenerator 4, give that cooler 5, throttling chew 6, expander 7, housing 20 form.It is characterized in that: compressor 1, radiator 2, filter 3, regenerator 4, give that cooler 5, throttling chew 6, expander 7 connects in proper order according to compressor-radiator-filter-regenerator-give cooler-throttling to chew-expander-regenerator-compressor and constitute refrigerating core.

Accompanying drawing 2 is views of regenerator.Housing 8 two ends weld plate 9 are along housing center line welding tracheae 10; Escape pipe 11 and air inlet pipe 12 all are welded in the housing side, and its axis and housing center line are perpendicular; This part Ying Jing is not less than the waterpower intensity pressure testing of 5MPa.

Accompanying drawing 3 is the views that give cooler, the equal weld plate 14 in housing 13 two ends, therein on the metallic plate axis of welding air inlet pipe 15 and escape pipe 16, two pipes all with the housing shaft line parallel, pipe end stretches into housing; This part Ying Jing is not less than the waterpower intensity pressure testing of 5MPa.

Accompanying drawing 4 is views that throttling is chewed.One end weld plate 18 of housing 17.On the metallic plate center, account for a micropore 19.

The purpose of this utility model starts compressor after being achieved in that the gas working medium that pours into certain pressure in refrigerating core.Compressor constantly boosts the gas compression, and high temperature and high pressure gas enters the radiator cooling.Normal temperature high voltage gas enters the regenerator cooling after entering filter dehydration dedusting, low temperature high pressure gas enters and gives the cooler back that further lowers the temperature and chew the micropore high speed from throttling and spray into expander, in expander, gas obtains low temperature because of the adiabatic expansion heat absorption, low-pressure low-temperature gas is flowed through and is sucked compression again, so circulation by compressor behind the regenerator.

With reference to accompanying drawing 1, embodiment of the present utility model is as follows:

CO with normal temperature, 0.5MPa ₂Be fed in the refrigerating core.Open compressor 1 constantly with CO ₂Compression, 70 ℃, the CO of 1.2MPa ₂Enter radiator 2 from compressor, dispel the heat, the CO of normal temperature, 1.2MPa to normal temperature ₂Flow through and enter regenerator 4 shell sides after the filter 3 dehydration dedustings.In regenerator, CO ₂With the low temperature CO in the tube side ₂Carry out heat exchange and be cooled to 0 ℃.1.2MPa0 ℃ CO ₂Flow to from regenerator and to give cooler 5 and further be cooled to-5 ℃.1.2MPa ,-5 ℃ CO ₂Chew 6 micropore high speed (420m/s) from throttling and spray into expander 7, CO in expander ₂Because of the adiabatic expansion heat absorption obtains-60 ℃ low temperature, pressure is reduced to 0.2MPa, low-pressure low-temperature CO ₂Flow into the tube side of regenerator from expander.In regenerator, the low temperature CO in the tube side ₂With the normal temperature CO in the shell side ₂Carry out heat exchange and be warming up to 0 ℃.0.2MPa, 0 ℃ CO ₂Flow out the back from regenerator and sucked compression again, so circulation by compressor.

Claims

1, a kind of refrigeration machine, it by compressor 1, radiator 2, filter 3, regenerator 4, give that cooler 5, throttling chew 6, expander 7, housing 20 is formed, and it is characterized in that: connect in proper order and constitute a refrigerating core by compressor-radiator-filter-regenerator-give cooler-throttling to chew-expander-regenerator-compressor.

2, by the refrigeration machine of claim 1 regulation, it is characterized in that: the two ends weld plate 9 of the housing 8 of regenerator, along housing center line welding tracheae 10; Escape pipe 11 and air inlet pipe 12 all are welded in the housing side, and its axis and housing center line are perpendicular; This part Ying Jing is not less than the waterpower intensity pressure testing of 5MPa.

3, by the refrigeration machine of claim 1 regulation, it is characterized in that: give the equal weld plate 14 in housing 13 two ends of cooler, therein on the metallic plate axis of welding air inlet pipe 15 and escape pipe 16, two pipes all with the housing shaft line parallel, pipe end stretches into housing; This part Ying Jing is not less than the waterpower intensity pressure testing of 5MPa.

4, by the refrigeration machine of claim 1 regulation, it is characterized in that throttling chews housing 17 1 end weld plate 18, on the metallic plate center, account for a micropore 19.