CN214536935U

CN214536935U - Shell-and-tube evaporator and air conditioning system thereof

Info

Publication number: CN214536935U
Application number: CN202023133351.XU
Authority: CN
Inventors: 胡匡昱
Original assignee: Kunshan Fangjia Machinery Co ltd
Current assignee: Kunshan Fangjia Machinery Co ltd
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-10-29
Anticipated expiration: 2030-12-23

Abstract

The utility model provides a shell and tube evaporator and air conditioning system thereof, the novel nipple rectifier comprises a cylindrical shel, the barrel tip is equipped with the end plate, be equipped with heat exchange tube bank in the barrel, be equipped with refrigerant import and refrigerant export on the barrel, heat exchange tube bank respectively with refrigerant import and refrigerant export intercommunication, be equipped with the regenerator in the barrel, the condenser export is connected to the regenerator input, and the expansion valve entry is connected to the output for to the refrigerant gas heating of evaporation in the heat exchanger, the refrigerant gas that the evaporator evaporation produced has obtained the intensification through the fin and the intraductal liquid refrigerant heat transfer of flat pipe or backheat, has promoted the super-cooled rate before the expansion valve, has improved the refrigerating output of complete machine. The cold energy of the refrigerant gas is replaced into the liquid refrigerant, so that the cold energy of water is further improved, and the cold energy can be improved by 3%.

Description

Shell-and-tube evaporator and air conditioning system thereof

Technical Field

The utility model relates to a heat exchanger field especially relates to shell and tube evaporator and air conditioning system thereof.

Background

For example, patent publication No. CN104819605A discloses a flooded evaporator, which is a conventional evaporator, in which the suction air of a compressor has no superheat, and since a heat exchange tube is designed to enhance the evaporation capacity, the evaporator is not suitable for being used as superheat, and the absence of suction superheat results in low discharge superheat, and a large amount of liquid refrigerant is easily accumulated in oil, which is not favorable for oil separation.

SUMMERY OF THE UTILITY MODEL

For solving the technical problem, the utility model provides a shell and tube evaporator, the novel nipple rectifier comprises a cylindrical shel, the barrel tip is equipped with the end plate, be equipped with heat exchanger tube bank in the barrel, be equipped with refrigerant import and refrigerant export on the barrel, heat exchanger tube bank respectively with refrigerant import and refrigerant export intercommunication, be equipped with the regenerator in the barrel, the condenser export is connected to the regenerator input, and the expansion valve entry is connected to the output for the refrigerant gas heating to the evaporation in the heat exchanger.

Preferably, the heat regenerator comprises a microchannel heat exchanger, the microchannel heat exchanger comprises a flat pipe, fins are welded on the outer portion of the flat pipe, and a refrigerant is communicated with the inner portion of the flat pipe.

Preferably, the heat regenerator comprises a tube fin heat exchanger, the tube fin heat exchanger comprises a heat exchange tube, fins are welded outside the heat exchange tube, and a refrigerant is communicated in the heat exchange tube.

Preferably, the regenerator is of a straight plate structure and is fixed on the upper part of the cylinder.

Preferably, the regenerator is of a V-shaped structure and is fixed to the upper part of the cylinder.

The utility model provides an air conditioning system of shell and tube evaporimeter, includes compressor, condenser, evaporimeter, expansion valve and the shell and tube evaporimeter that the preamble provided, compressor and condenser intercommunication, the condenser output with the regenerator of shell and tube evaporimeter is connected, the regenerator output with the expansion valve is connected, the expansion valve with the refrigerant access connection of shell and tube evaporimeter.

Preferably, the condenser is communicated with a flat tube of the micro-channel heat exchanger.

Preferably, the condenser is communicated with a heat exchange tube of a tube fin ventilator.

Preferably, a suction temperature sensor is arranged between the refrigerant outlet and the compressor, an evaporation temperature sensor is arranged in the cylinder, and the expansion valve is controlled according to suction superheat degree.

The utility model provides a shell and tube type evaporimeter and air conditioning system thereof has following beneficial effect: the refrigerant gas generated by the evaporation of the evaporator is subjected to heat exchange through the fins and the flat tubes or the liquid refrigerant in the heat return tube, so that the temperature is raised, the supercooling degree in front of the expansion valve is improved, and the refrigerating capacity of the whole machine is improved. The cold energy of the refrigerant gas is replaced into the liquid refrigerant, so that the cold energy of water is further improved, and the cold energy can be improved by 3%. In addition, the energy efficiency ratio can be improved by 2%, and further energy is saved. And the air conditioning system adopting superheat degree control further reduces the cost compared with the existing liquid level control system.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below.

FIG. 1 is a schematic view of a shell and tube evaporator of the present invention;

FIG. 2 is a schematic view of a shell and tube evaporator of the present invention;

FIG. 3 is a schematic view of the microchannel heat exchanger of the present invention;

FIG. 4 is a schematic view of an air conditioning system according to the present invention;

wherein, 1, a heat exchange tube bundle; 2. a refrigerant inlet; 3. a refrigerant outlet; 4. a heat regenerator; 5. flat tubes; 6. a fin; 7. an expansion valve; 8. a compressor; 9. a condenser; 10. an intake air temperature sensor; 11. an evaporation temperature sensor.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Example 1

As shown in fig. 1, the utility model provides a shell-and-tube evaporator, including the barrel, the barrel tip is equipped with the end plate, be equipped with regenerator 4 in the barrel, regenerator 4 input is connected with external compressor 8, and the output is connected with refrigerant import 2 for the refrigerant gas heating of heat exchanger tube bank output, regenerator 4 is connected in refrigerant export 3 with between the heat exchanger tube bank for the refrigerant gas heating of heat exchanger tube bank output, specifically speaking, regenerator 4 includes the microchannel heat exchanger, the microchannel heat exchanger includes flat pipe 5, flat pipe 5 has welded outside has fin 6, flat pipe 5 is inside to communicate the refrigerant, and liquid is from condenser 9 export from the refrigerant, and the refrigerant gas that the evaporator evaporation produced has obtained the intensification through the heat transfer of the liquid refrigerant in fin 6 and flat pipe 5, the supercooling degree in front of the expansion valve 7 is improved, and the refrigerating capacity of the whole machine is improved. The energy efficiency ratio of the whole machine is also improved. The suction gas of the compressor 8 has superheat degree, and the superheat degree of the exhaust gas is further increased, so that the oil separation is facilitated, and the performance of the whole machine is further improved. In this embodiment, the regenerator 4 may be a flat plate fixed on the top of the drum by suspension, or a V-shaped regenerator suspended on the top of the drum.

Example 2

The utility model provides a shell and tube evaporator, including the barrel, the barrel tip is equipped with the end plate, be equipped with heat exchanger tube bundle 1 in the barrel, be equipped with refrigerant import 2 and refrigerant export 3 on the barrel, heat exchanger tube bundle respectively with refrigerant import 2 and refrigerant export 3 intercommunication, be equipped with regenerator 4 in the barrel, regenerator 4 is connected in between refrigerant export 3 and the heat exchanger tube bundle for the refrigerant gas heating of heat exchanger tube bundle output, regenerator 4 includes tube fin 6 heat exchanger, tube fin 6 heat exchanger includes the heat exchange tube, the welding of heat exchange tube outside has fin 6, the intercommunication refrigerant in the heat exchange tube, the refrigerant gas that the evaporator evaporation produced passes through fin 6 and the liquid refrigerant heat transfer in the heat exchange tube, has obtained the intensification, has promoted the super-cooled rate before the expansion valve 7, the refrigerating capacity of the whole machine is improved. The energy efficiency ratio of the whole machine is also improved. The suction gas of the compressor 8 has superheat degree, the superheat degree of the exhaust gas further rises, the oil separation is facilitated, the performance of the whole machine is further improved, and similarly, the heat exchanger using the tube fins 6 can also be a flat plate type, is fixed at the top of the cylinder body in a suspension mode, can also be V-shaped, and is also suspended at the top of the cylinder body.

As shown in fig. 3, the specific solutions of the above embodiments specifically applied to the air conditioning system are: including compressor 8, condenser 9, evaporimeter, expansion valve 7 and embodiment 1 or embodiment 2's shell and tube evaporimeter, compressor 8 and condenser 9 intercommunication, condenser 9 output with shell and tube evaporimeter's regenerator 4 is connected, regenerator 4 output with expansion valve 7 is connected, expansion valve 7 with shell and tube evaporimeter's refrigerant import 2 is connected.

In the embodiment 1, the condenser 9 is communicated with the flat tube 5 of the microchannel heat exchanger and is filled with liquid refrigerant, in the embodiment 2, the condenser 9 is communicated with the heat exchange tube of the tube fin 6 ventilator and is filled with liquid refrigerant, a suction temperature sensor 10 is arranged between the refrigerant outlet and the compressor, an evaporation temperature sensor 11 is arranged in the cylinder, and the expansion valve 7 is controlled according to suction superheat degree.

Various modifications to the embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a shell and tube evaporator, includes the barrel, the barrel tip is equipped with the end plate, be equipped with heat transfer tube bank in the barrel, be equipped with refrigerant import and refrigerant export on the barrel, its characterized in that, be equipped with the regenerator in the barrel, the condenser export is connected to the regenerator input, and the expansion valve entry is connected to the output for the refrigerant gas heating of evaporating in the heat exchanger.

2. A shell and tube evaporator as set forth in claim 1 wherein said heat regenerator comprises a microchannel heat exchanger comprising flat tubes with fins welded to the exterior of the flat tubes and a refrigerant passing through the interior of the flat tubes.

3. A shell and tube evaporator as set forth in claim 1 wherein said heat regenerator comprises a tube and fin heat exchanger including heat exchange tubes with fins welded to the exterior thereof and a refrigerant communicated within the heat exchange tubes.

4. A shell and tube evaporator as set forth in claim 1, 2 or 3, characterized in that said regenerator is of a straight plate-shaped configuration and is fixed to the upper portion of said tube body.

5. A shell and tube evaporator as set forth in claim 1, 2 or 3, characterized in that said regenerator is of V-shaped configuration and is fixed to the upper portion of said barrel.

6. An air conditioning system, characterized in that, including compressor, condenser, evaporimeter, expansion valve and the shell and tube evaporimeter that any one of claims 1-5 provided, the compressor communicates with the condenser, the condenser output with the regenerator of shell and tube evaporimeter is connected, the regenerator output with the expansion valve is connected, the expansion valve with the refrigerant inlet connection of shell and tube evaporimeter.

7. The air conditioning system of claim 6, wherein the condenser is in communication with a flat tube of a microchannel heat exchanger.

8. The air conditioning system of claim 6, wherein the condenser is in communication with a heat exchange tube of a tube and fin ventilator.

9. An air conditioning system as claimed in claim 6, wherein a suction temperature sensor is provided between said refrigerant outlet and said compressor, an evaporation temperature sensor is provided in said cylinder, and an expansion valve is controlled based on a suction superheat degree.