CN211120093U

CN211120093U - Double-temperature refrigerating system with double ejectors

Info

Publication number: CN211120093U
Application number: CN201922060187.5U
Authority: CN
Inventors: 臧润清; 李晓静; 董浩; 周会芳
Original assignee: Tianjin University of Commerce
Current assignee: Tianjin University of Commerce
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2020-07-28
Anticipated expiration: 2029-11-26

Abstract

The utility model discloses a take two temperature refrigerating system of two ejectors. The outlet of the compressor of the utility model is respectively connected with the nozzle of the first ejector, the nozzle of the second ejector and the inlet of the second condenser, the outlet of the diffusion chamber of the first ejector is sequentially connected with the first condenser, the first throttle valve and the first evaporator through pipelines, and the outlet of the first evaporator is connected with the mixing chamber of the first ejector; the outlet of the second condenser is sequentially connected with a second throttling valve, a second evaporator and a mixing chamber of a second ejector, and a pressure expansion chamber of the second ejector is connected with the inlet of the compressor through a pipeline. The utility model discloses can realize that one set of system provides two kinds of refrigeration temperature, widen vapor compression refrigerating system's application.

Description

Double-temperature refrigerating system with double ejectors

Technical Field

The utility model belongs to the technical field of refrigeration technique and specifically relates to a take two temperature refrigerating system of two ejectors is related to.

Background

The vapor compression type refrigerating system consists of four main parts, namely a compressor, a condenser, a throttling device, an evaporator and the like, wherein a refrigerant absorbs heat in the evaporator through phase change and emits heat in the condenser, so that the aim of refrigerating is fulfilled. To absorb heat from the heat-releasing working fluid in the evaporator, the refrigerant needs to be throttled down to a lower pressure, which corresponds to a lower evaporation temperature. When the required refrigeration temperature is lower, the pressure ratio of the system can be increased, so that the exhaust temperature of the compressor is higher, the heat exchange loads of the condenser and the evaporator can be correspondingly increased, and the filling amount of a refrigerant is required to be larger, so that the power consumption of the compressor is improved, and the energy efficiency of the system is reduced.

Generally, a vapor compression refrigeration system provides only one suction pressure, and correspondingly only one evaporating temperature, to a single compressor. However, two or more evaporation temperatures are formed, which not only improves the efficiency of the refrigeration system, but also widens the application range of the vapor compression refrigeration system. In a conventional refrigeration system having two-stage evaporating temperatures, at least two compressors or compressor cylinders are required to achieve the dual evaporating temperatures, which makes the compressors used in the dual evaporating temperature system more complicated and difficult to manage.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a not enough to prior art, the utility model aims at providing a take two temperature refrigerating system of two ejectors, this system uses two ejectors and two evaporimeters and condenser, can obtain two different evaporating temperatures, realizes one set of system and provides the purpose of two kinds of cold sources.

A double-temperature refrigerating system with double ejectors comprises a compressor 1, an ejector I2, a condenser I3, a throttle valve I4, an evaporator I5, a condenser II 6, a throttle valve II 7, an evaporator II 8 and an ejector II 9, wherein the outlet of the compressor 1 is respectively connected with the nozzle of the ejector I2, the nozzle of the ejector II 9 and the inlet of the condenser II 6, the outlet of a diffusion chamber of the ejector I2 is sequentially connected with the condenser I3, the throttle valve I4 and the evaporator I5 through pipelines, and the outlet of the evaporator I5 is connected with a mixing chamber of the ejector I2; the outlet of the second condenser 6 is sequentially connected with a second throttle valve 7, a second evaporator 8 and a mixing chamber of a second ejector 9, and a diffusion chamber of the second ejector 9 is connected with the inlet of the compressor 1 through a pipeline.

The utility model discloses following technological effect has:

1. the use of two ejectors achieves the goal of achieving two different refrigeration temperatures for a single system.

2. The use of an ejector can increase the suction pressure of the compressor, resulting in a reduced pressure ratio of the system, reducing power consumption, and thus improving system performance.

Drawings

Fig. 1 is a schematic diagram of a dual-temperature refrigeration system with dual ejectors according to the present invention.

1-compressor, 2-ejector one, 3-condenser one, 4-throttle valve one, 5-evaporator one, 6-condenser two, 7-throttle valve two, 8-evaporator two, 9-ejector two.

Detailed Description

Referring to fig. 1, a dual temperature refrigeration system with dual ejectors includes a compressor 1, an ejector one 2, a condenser one 3, a throttle valve one 4, an evaporator one 5, a condenser two 6, a throttle valve two 7, an evaporator two 8, an ejector two 9, and a connecting pipe. The outlet of the compressor 1 is divided into three paths, one path is connected with the nozzle of the ejector I2, the other path is connected with the nozzle of the ejector II 9, the other path is directly connected with the inlet of the condenser II 6, the outlet of the diffusion chamber of the ejector I2 is sequentially connected with the condenser I3, the throttle valve I4 and the evaporator I5 through pipelines, and the outlet of the evaporator I5 is connected with the mixing chamber of the ejector I2; the outlet of the second condenser 6 is sequentially connected with a second throttle valve 7, a second evaporator 8 and a mixing chamber of a second ejector 9, and a diffusion chamber of the second ejector 9 is connected with the inlet of the compressor 1 through a pipeline.

A take two temperature refrigerating system of two ejectors in, the high temperature high pressure steam of compressor export is the three routes, the nozzle that gets into ejector one all the way draws the mixed back of steam that penetrates evaporator one in proper order in ejector one's mixing chamber, it condenses to get into the condenser after the diffusion chamber pressure boost to flow through, throttle valve one with the liquid throttle decompression of condensation back to evaporator evaporation heat absorption become steam directly be liquid by condenser two condensation all the way, get into evaporator two evaporation heat absorption behind the two throttle valves, steam after the evaporation is introduced to ejector two in, get into the compressor after mixing the pressure boost, circulation.

The foregoing is merely a preferred embodiment of this patent and it will be apparent to those skilled in the art that numerous modifications and adaptations can be made without departing from the principles of the system and these are intended to be included within the scope of the invention.

Claims

1. A double-temperature refrigerating system with double ejectors is characterized in that an outlet of a compressor is respectively connected with a nozzle of a first ejector, a nozzle of a second ejector and an inlet of a second condenser, an outlet of a diffusion chamber of the first ejector is sequentially connected with the first condenser, a first throttle valve and a first evaporator through pipelines, and an outlet of the first evaporator is connected with a mixing chamber of the first ejector; the outlet of the second condenser is sequentially connected with a second throttling valve, a second evaporator and a mixing chamber of a second ejector, and a pressure expansion chamber of the second ejector is connected with the inlet of the compressor through a pipeline.