CN220818133U

CN220818133U - Co-fluorine type double-impeller vapor compression type air conditioner circulating system

Info

Publication number: CN220818133U
Application number: CN202322050416.1U
Authority: CN
Inventors: 杨潇; 赵文琪; 赵书福; 韩兰兰; 苏从兵
Original assignee: Qingdao Tebao New Energy Technology Co ltd
Current assignee: Qingdao Tebao New Energy Technology Co ltd
Priority date: 2023-08-01
Filing date: 2023-08-01
Publication date: 2024-04-19
Anticipated expiration: 2033-08-01

Abstract

The utility model relates to a co-fluorine type double-impeller vapor compression type air conditioner circulating system which comprises a double-impeller centrifugal compressor, an evaporator, a condenser, a first throttling device, an economizer, a second throttling device and the like, wherein the double-impeller centrifugal compressor can adopt a double-shaft extension high-speed motor direct connection type back-to-back structure, and also can be composed of two single-impeller compressors, wherein the suction side of the first impeller is connected to the outlet end of the evaporator, and the suction side of the second impeller is connected to the outlet end of the economizer. Compared with a single-stage compression centrifugal chiller, the novel co-fluorine type double-impeller vapor compression air conditioning system has the characteristics of high efficiency, large adaptive compression ratio and large installed capacity; compared with the traditional double-stage compression centrifugal chiller, the novel co-fluorine type double-impeller steam compressor has the characteristics of simple structure, small axial bearing load, small diameter of a second impeller and low cost.

Description

Co-fluorine type double-impeller vapor compression type air conditioner circulating system

Technical Field

The utility model belongs to the technical field of air conditioning circulating systems, and particularly relates to a co-fluorine type double-impeller vapor compression air conditioning circulating system.

Background

In the field of air conditioning, a refrigeration system or a heating system generally adopts single impeller (a single-stage compression centrifugal chiller) or double-impeller compression (a double-stage compression centrifugal chiller), a schematic diagram of the single-impeller compression system is shown in fig. 3, a corresponding pressure enthalpy diagram is shown in fig. 4, and a compression cycle process is 1-2-3-4-5-1. The compression principle diagrams of the double impellers are shown in fig. 5 and 6, the corresponding pressure enthalpy diagrams are shown in fig. 7, the compression cycle process is 1-A-B-2-3-4-C-D-E-1, in the double-stage compression cycle system, the exhaust gas of the first impeller is mixed with the refrigerant gas generated by the economizer (air supplementing) and then is compressed by the second impeller, and the exhaust gas is discharged to the condenser.

Disclosure of utility model

In view of the above-mentioned drawbacks or shortcomings of the prior art, the present utility model provides a co-fluorine type double impeller vapor compression type air conditioning cycle system for solving the above-mentioned problems of the prior art.

The main technical scheme is as follows: the utility model provides a two impeller vapor compression formula air conditioner circulation system altogether, includes bilobed wheel centrifugal compressor, evaporimeter, condenser, economic ware and throttling arrangement constitution, stretches out two pipelines through bilobed wheel centrifugal compressor exhaust side, all communicates to the condenser, condenser and evaporimeter all communicate through pipeline and economic ware, economic ware and evaporimeter all connect back bilobed wheel centrifugal compressor's suction side again through the pipeline, throttling arrangement divide into throttling arrangement and No. two throttling arrangement, set up respectively on the pipeline that the economic ware is connected with the condenser to the evaporimeter.

Furthermore, the double-impeller centrifugal compressor adopts a back-to-back structure with a high-speed motor in a double-shaft extending and direct connecting mode, and a first impeller and a second impeller are respectively fixed on the double shafts.

Further, two pipelines extend out of the exhaust side of the double-impeller centrifugal compressor and are respectively the exhaust side of the first impeller and the exhaust side of the second impeller, the economizer is communicated to the air suction side of the second impeller through the pipeline, and the evaporator is communicated to the air suction side of the first impeller through the pipeline.

Furthermore, the back-to-back structure of the double-impeller centrifugal compressor can be replaced by two single-impeller compressors which are respectively a first compressor and a second compressor through a back-to-back structure.

Furthermore, two pipelines extend out of the exhaust side of the double-impeller centrifugal compressor to be exhaust ports of the first compressor and the second compressor respectively, the economizer is communicated to the air suction port of the second compressor through the pipelines, and the evaporator is communicated to the air suction port of the first compressor through the pipelines.

Further, the economizer is of a heat exchanger structure or a flash drum structure.

The utility model has the beneficial effects that:

1. compared with a single-stage compression centrifugal chiller, the novel co-fluorine type double-impeller vapor compression air conditioning system has the characteristics of high efficiency, large adaptive compression ratio and large installed capacity;

2. Compared with the traditional double-stage compression centrifugal chiller, the novel co-fluorine type double-impeller steam compressor has the characteristics of simple structure, small axial bearing load, small diameter of a second impeller and low cost.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the accompanying drawings in which:

FIG. 1 is a schematic diagram of a novel dual impeller centrifugal compressor circulation system;

FIG. 2 is a corresponding pressure enthalpy diagram of the dual impeller centrifugal compressor of the present invention;

FIG. 3 is a schematic diagram of a single stage centrifugal compressor circulation system (single impeller);

fig. 4 is a corresponding pressure enthalpy diagram of a single stage centrifugal compressor;

FIG. 5 is a schematic diagram of a conventional two-stage centrifugal compressor circulation system (dual impeller);

FIG. 6 is another schematic diagram of a conventional two-stage centrifugal compressor circulation system (dual impeller);

fig. 7 is a corresponding pressure enthalpy diagram of a two-stage centrifugal compressor;

Wherein: 1. a compressor; 1.1, impeller number one; 1.2, impeller number two; 2. an evaporator; 3. a condenser; 4. an economizer; 5. a first throttle device; 6. and a second throttling device.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be noted that, for convenience of description, only the portions related to the utility model are shown in the drawings.

It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.

Examples:

The novel co-fluorine type double-impeller vapor compression air conditioner circulation system consists of an evaporator 2, a double-impeller centrifugal compressor 1, a condenser 3, a first throttling device 5, an economizer 4, a second throttling device 6 and the like.

The novel co-fluorine type double-impeller vapor compression air conditioner circulating system is characterized in that components such as an evaporator 2, a double-impeller centrifugal compressor 1, a condenser 3, a first throttling device 5, an economizer 4, a second throttling device 6 and the like are communicated through pipelines to form a closed circulating loop;

The double-impeller centrifugal compressor 1 can adopt a double-shaft extending and direct-connecting type back-to-back structure of a high-speed motor, and can also be composed of two single-impeller compressors;

When the double-impeller centrifugal compressor 1 adopts a double-shaft extending back-to-back structure, a loop is formed by the air suction side of the No. two impellers 1.2 and the economizer through a pipeline, and a loop is formed by the air discharge side of the No. two impellers 1.2 and the condenser 3 through a pipeline;

When the double-impeller centrifugal compressor 1 adopts two single-impeller compressor structures, an air suction port of one compressor (No. two) and the economizer 4 are required to form a loop through a pipeline, and the air discharge port and the condenser 3 form a loop through a pipeline;

The economizer 4 may be a heat exchanger (plate or shell-and-tube) structure, or a flash drum structure.

The working principle is as shown in figure 1, the corresponding pressure enthalpy diagram is as shown in figure 2, and the compression cycle process is that the impeller I: 1- & gt 2- & gt 3- & gt 4- & gt C- & gt D- & gt E- & gt 1, and a second impeller: in the circulating system, the impeller 1.1 compresses the refrigerant gas generated by the evaporator 2 independently, then the refrigerant gas is discharged into the condenser 3, and the impeller 1.2 compresses the refrigerant gas generated by the economizer 4 independently, then the refrigerant gas is discharged into the condenser 3.

The working process of the utility model is as follows:

When the novel co-fluorine type double-impeller vapor compression type air conditioner circulating system works, liquid refrigerant in the evaporator 2 evaporates and absorbs heat on the chilled water side, evaporated gaseous refrigerant enters the first impeller 1.1 through a pipeline, kinetic energy is applied by high-speed rotary compression of the first impeller 1.1, compressed high-temperature high-pressure gaseous refrigerant is discharged to the condenser 3 through a pipeline, the high-temperature high-pressure gaseous refrigerant in the condenser 3 is cooled and condensed by cooling water to become medium-temperature medium-pressure liquid refrigerant, the liquid refrigerant enters the economizer 4 after being throttled, cooled and depressurized by the first throttling device 5, flash evaporation is carried out in the economizer 4 to be in a gas-liquid mixed state, at the moment, the gaseous refrigerant is discharged to the condenser 3 after being throttled and depressurized by the second throttling device 6 through the pipeline, the liquid refrigerant in the economizer 4 enters the evaporator 2 after being throttled and depressurized by the second throttling device 6, the liquid refrigerant in the evaporator 2 is evaporated to be the gaseous refrigerant after evaporating and absorbing heat on the chilled water side, and the liquid refrigerant is enabled to enter a new circulation, and reach the required temperature on a round by round.

The above description is only illustrative of the preferred embodiments of the present utility model and of the principles of the technology employed. It will be appreciated by persons skilled in the art that the scope of the utility model referred to in the present utility model is not limited to the specific combinations of the technical features described above, but also covers other technical features formed by any combination of the technical features described above or their equivalents without departing from the inventive concept. Such as the above-mentioned features and the technical features disclosed in the present utility model (but not limited to) having similar functions are replaced with each other.

Claims

1. The utility model provides a two impeller vapor compression formula air conditioner circulation systems of altogether fluorine formula, includes compressor, evaporimeter, condenser, economizer and throttling arrangement group, its characterized in that: the compressor is a bilobed wheel centrifugal compressor, two pipelines extend out of the exhaust side of the bilobed wheel centrifugal compressor and are all communicated with the condenser, the condenser and the evaporator are all communicated with the economizer through pipelines, the economizer and the evaporator are connected back to the air suction side of the bilobed wheel centrifugal compressor through pipelines, and the throttling device is divided into a first throttling device and a second throttling device and is respectively arranged on the pipelines of the evaporator and the condenser, wherein the pipelines are connected with the economizer.

2. A co-fluoro double impeller vapor compression air conditioning cycle system as recited in claim 1, wherein: the double-impeller centrifugal compressor adopts a back-to-back structure comprising a double-shaft extension type high-speed motor and two single-impeller compressors passing through the back-to-back structure.

3. A co-fluorine type double impeller vapor compression type air conditioner circulation system according to claim 2, wherein: the double-shaft direct-connection type back-to-back structure of the high-speed motor is characterized in that a first impeller and a second impeller are respectively fixed on double shafts, two pipelines extend out of the exhaust side of the double-impeller centrifugal compressor to be the exhaust side of the first impeller and the exhaust side of the second impeller respectively, the economizer is communicated to the air suction side of the second impeller through the pipelines, and the evaporator is communicated to the air suction side of the first impeller through the pipelines.

4. A co-fluorine type double impeller vapor compression type air conditioner circulation system according to claim 2, wherein: the back-to-back structure of the double-impeller centrifugal compressor is replaced by two single-impeller compressors which are respectively a first compressor and a second compressor through a back-to-back structure.

5. A co-fluoro double impeller vapor compression air conditioning cycle system as recited in claim 4 wherein: the exhaust side of the bilobed wheel centrifugal compressor extends out of two pipelines to form exhaust ports of a first compressor and a second compressor respectively, the economizer is communicated to the air suction port of the second compressor through the pipelines, and the evaporator is communicated to the air suction port of the first compressor through the pipelines.

6. A co-fluoro double impeller vapor compression air conditioning cycle system as recited in claim 1, wherein: the economizer includes a heat exchanger structure and a flash drum structure.