CN1328245A

CN1328245A - Energy-saving efficient refrigerating method for its equipment

Info

Publication number: CN1328245A
Application number: CN 00108096
Authority: CN
Inventors: 边瑞宏
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-06-14
Filing date: 2000-06-14
Publication date: 2001-12-26

Abstract

An energy-saving efficient refrigerating method and equipment is disclosed. The refrigerant after condensed by condenser comes into parallelly connected evaporators. After evaporated, part of refrigerant is compressed into nozzle by compressor to generate a low-pressure high-speed airflow. The rest comes to the exit of nozzle, where it is quickly evaporated under the suctino of said high-speed airflow and then boosted into condenser via diffusino pipe. Its advantages include high efficiency, saving enrgy, simple structure, and decreasing pollution and noise.

Description

A kind of energy-efficient refrigerating method and device thereof

The present invention relates to a kind of refrigerating method and refrigerating plant, can be applicable to refrigeration product and industrialization refrigeration plants such as refrigerator, air-conditioning.

At present, air-conditioning, refrigerator and industrial refrigeration equipment adopt two kinds of refrigeration principles usually, a kind of is the vapour compression refrigeration principle, it is to adopt compressor that the cold-producing medium after evaporating in the evaporimeter is compressed the generation high steam, enter condenser condenses, enter evaporimeter through the cold-producing medium after the condenser condenses after throttling and finish kind of refrigeration cycle, this refrigeration principle is widely used in products such as air-conditioning, refrigerator; And another kind of refrigeration principle is steam-sprayed refrigeration principle, it is to utilize steam to spray the back bulbs of pressure after injector (nozzle) sprays high steam to reduce, speed increases (can reach supersonic speed in the exit vapor (steam) velocity), with the steam ejection in the evaporimeter, and make evaporimeter keep lower pressure to realize refrigeration, this refrigeration modes is widely used in chemical industry, weaving, industries such as metallurgy, its high steam derives from heat power equipment or used heat utilizations such as boiler, cold-producing medium can be a water, fluorine Lyons, ammonia etc., above-mentioned two kinds of refrigeration modes cut both ways, steam compression type refrigeration is a highly effective refrigeration, can produce very low temperature, compact conformation, noise is low, pollute few, but but consume a large amount of electric energy, refrigeration space is less in addition, is difficult to as commercial Application.Steam-sprayed refrigeration cost is low, less demanding to cold-producing medium, and refrigeration space is very big, but needs thermals source such as Boiler Steam or waste gas, therefore pollute bigger, equipment needed thereby is bulky usually, and noise is higher, and the characteristics of these two kinds of refrigeration modes make its application respectively have limitation.

The object of the present invention is to provide a kind of energy-efficient refrigerating method and device.It can overcome the defective that above-mentioned two kinds of refrigeration modes exist, and both advantages are combined.

The objective of the invention is to realize in the following manner:

This refrigeration modes is: the cold-producing medium after the condenser condenses is entered after throttling in the evaporimeter in parallel, and part of refrigerant is evaporated the back and is compressed by compressor in evaporimeter, forms high pressure refrigerant vapor, enters injector nozzle; Form the low-voltage high speed air-flow at nozzle exit, another part cold-producing medium directly arrives the injector nozzle exit through evaporimeter, herein by high speed refrigerant vapour injection, this evaporimeter internal pressure is reduced, quicken sweat cooling, mixed with the low-voltage high speed refrigerant vapour of nozzle exit, enter diffuser pipe by the refrigerant vapour of injection, make the steam pressure supercharging enter condenser condenses, finish a kind of refrigeration cycle.

Nozzle can adopt Laval type nozzle, and steam is supersonic speed by the nozzle exit flow velocity.

This refrigerating plant comprises condenser, evaporimeter and compressor, wherein, the condensator outlet pipeline is connected injector behind flow controller, evaporimeter and compressor, the condensator outlet pipeline also is parallel with pipeline in addition, through the jet expansion of flow controller, evaporimeter arrival injector, two pipelines converge after diffuser pipe is got back to condenser inlet in this outlet.

The present invention compared with prior art has following advantage:

Cold-producing medium becomes hot high pressure steam behind the first pipeline compressor, enter injector nozzle (9) exit, form low-voltage high speed (or high velocity of sound) air-flow at nozzle exit, and with the interior refrigerant vapor injection of evaporimeter (8), the evaporimeter internal pressure is reduced, accelerated evaporation process, increased refrigerant flow simultaneously, improved refrigerating capacity, diffuser pipe can make high velocity vapor be pressurized to condensing pressure simultaneously.

The present invention is owing to effectively utilized the energy that compressor operating produced, the high steam that vapour compression refrigeration produced is originated as the required steam of steam jet refrigeration, thereby vapour compression refrigeration and steam-sprayed refrigeration combined effectively, keep its original advantage, and overcome deficiency separately, for steam compression type refrigeration, quickened the circulation of cold-producing medium, increase evaporimeter quantity, thereby enlarged refrigeration space, saved electric energy relatively; For steam-sprayed refrigeration, solved the thermal source problem easily, avoided because of using pollution and the noise that boiler or waste gas brought, simultaneously simplified device structure greatly, dwindled volume, cryogenic temperature is reduced greatly, in addition, the present invention also can reduce the requirement to cold-producing medium, has increased the choice of cold-producing medium, for environmental protection type refrigeration has been opened up wide space.

Below in conjunction with accompanying drawing the present invention is further described:

Fig. 1 is existing steam jet refrigeration structure principle chart

Fig. 2 is existing steam compression type refrigeration structure principle chart

Fig. 3 is a structure principle chart of the present invention

In Fig. 1: (1) boiler; (2) injector; (3) diffuser pipe; (4) condenser; (5) evaporimeter; (6) throttle mechanism.

In Fig. 2: (7) condenser; (8) throttle mechanism; (9) evaporimeter; (10) compressor.

In Fig. 3: (11) condenser; (12) flow controller; (13) evaporimeter; (14) compressor; (15) injector; (16) diffuser pipe; (17) flow controller; (18) evaporimeter.

Embodiment sees Fig. 1: condenser (1) outlet is divided into two-way, one the tunnel through flow controller (2), evaporimeter (3) and compressor (4) arrive injector (5), another road is through flow controller (7), evaporimeter (8) arrives nozzle (9) exit of injector (5), two-way converges after diffuser pipe (6) is got back to condenser (1) inlet at this, whole circulation is moved at full closeding state, flow controller is divided into two among the embodiment, be convenient to regulate respectively the flow of two-way cold-producing medium, the effect of diffuser pipe is that high velocity vapor is pressurized to condensing pressure, preferably it and injector are connected as a single entity, nozzle (9) in the injector (5) can adopt the Laval type, and it can produce very high flow velocity and very low pressure (stream scooter 1000m/s); Utilize its high velocity air to aspirate cold-producing medium in the evaporimeter (8), and produce the evaporation that certain vacuum is beneficial to cold-producing medium.

Though the embodiment of the invention only is with two loops, according to the difference of usage space or refrigerating capacity and the like can be provided with many, the quantity of evaporimeter also can have a plurality of.

Claims

1, a kind of energy-efficient refrigerating method: it is characterized in that: this refrigeration modes is: the cold-producing medium after the condenser condenses is entered after throttling in the evaporimeter in parallel, part of refrigerant is evaporated the back and is compressed by compressor in evaporimeter, form high pressure refrigerant vapor, enter injector nozzle; Form the low-voltage high speed air-flow at nozzle exit, another part cold-producing medium directly arrives the injector nozzle exit through evaporimeter, herein by high speed refrigerant vapour injection, this evaporimeter internal pressure is reduced, quicken sweat cooling, mixed with the low-voltage high speed refrigerant vapour of nozzle exit, enter diffuser pipe by the refrigerant vapour of injection, make the steam pressure supercharging enter condenser condenses, finish a kind of refrigeration cycle.

2, method according to claim 1 is characterized in that: described nozzle is the Laval type, and steam is supersonic speed by the flow velocity at nozzle place.

3, a kind of energy-efficient refrigerating plant, its feature in: this refrigerating plant comprises condenser, evaporimeter and compressor, wherein the condensator outlet pipeline is connected injector behind flow controller, evaporimeter and compressor, the condensator outlet pipeline also is parallel with pipeline in addition, through the jet expansion of flow controller, evaporimeter arrival injector, two pipelines converge after diffuser pipe is got back to condenser inlet in this outlet.