Gas-liquid split-phase injection expansion evaporation system
By designing the gas solution in the heat pump and refrigeration equipment, the air -phase irradiation and the inflation evaporation system is designed, and the heat exchanger and the electronic expansion valve are used to achieve the phenomenon of air liquid separation and expansion and suction of the refrigerant, which solves the difference and accumulation of refrigerant in the device. The problem of liquid has improved the operating efficiency of the equipment and the service life of the compressor.
Patent Information
- Application Number
- CN202421129445.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-22
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-05-22
AI Technical Summary
In existing heat pumps and refrigeration equipment, the difference in the separation of refrigerant gas and liquid between the condenser and the evaporator causes liquid to enter the compressor, causing the compressor to overload and the compressor to be easily damaged. At the same time, the refrigerant easily forms a gas hammer in the pipeline, resulting in Noise, and refrigerant accumulates fluid in the pipeline at the bottom of the evaporator or condenser, affecting the equipment effect.
Design a kind of gas liquid to divide the phase irradiated swelling and evaporate system. By setting up the heat exchanger between the condenser and the evaporator, and using the main air line and the main liquid line for preliminary gas liquid separation, through the electronic expansion valve and one -way valve Realize the phenomenon of expansion and shooting, improve the speed of refrigerant, improve the heat absorption process, and prevent liquid accumulation through filtering the storage liquid.
Achieved the complete air fluid separation of refrigerant, avoiding liquids from entering the compressor, reducing noise, improving the evaporation effect, ensuring the normal operation of evaporator and condenser, and extending the service life of the compressor.
Smart Images
Figure CN222418064U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a gas-liquid phase separation absorption expansion evaporation system, belonging to the field of heat pumps and refrigeration equipment. Background Art
[0002] At present, in various heat pumps and refrigeration equipment, there are only capillary tubes, electronic expansion valves, distributors and other interception and distribution equipment between the condenser and the evaporator to distribute and regulate the refrigerant between the condenser and the evaporator. The gas-liquid separation of this refrigerant is poor, and the liquid easily enters the compressor, causing the compressor to overload and damage the compressor. When cooling or heating, the refrigerant accumulates liquid in the bottom pipe of the condenser or evaporator, causing the evaporator or condenser to not fully exert its effect. In addition, the refrigerant gas and liquid mixed in the pipeline are prone to form air hammers, which cause noise. Summary of the invention
[0003] According to the background problem, the problem to be solved by the utility model is:
[0004] 1. How to lower the air hammer and reduce the noise
[0005] 2. How to prevent liquid from entering the compressor and prevent the compressor from overloading
[0006] 3. How to reduce the accumulation of liquid in the evaporator or condenser and improve the effect of the evaporator or condenser
[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0008] A gas-liquid phase separation absorption expansion evaporation system, a heat exchanger is connected between the condenser and the evaporator, the evaporator outlet pipeline is connected to the heat exchanger tube side inlet through the main liquid line, the evaporator outlet pipeline is connected to the heat exchanger shell side inlet through the main gas line, and the main gas line is provided with an electronic expansion valve 1; the heat exchanger tube side outlet is connected to the main liquid distributor through the main liquid outlet pipeline, and the heat exchanger shell side outlet is connected to the main gas distributor through the main gas outlet pipeline, and the main liquid outlet pipeline is provided with a filter reservoir, an electronic expansion valve 2 and a capillary line in sequence, the filter reservoir is arranged below the heat exchanger, and a one-way valve is provided on the cross-line of the electronic expansion valve 2, and the direction of the one-way valve is from the distributor to the heat exchanger; the main gas distribution line of the main gas distributor and the main liquid distribution line of the main liquid distributor are combined and connected to each inlet of the evaporator, and the main liquid distribution line outlet is arranged above the main gas distribution line outlet.
[0009] Preferably, the heat exchanger is a four-tube heat exchanger, which includes an outer shell casing, a tube-side outer shell casing, a tube-side and a tube-side inner shell casing; the outer shell casing is sleeved on the outside of the tube-side, and the shell-side outlet is arranged on the outer shell casing at one end of the tube-side inlet, the tube-side outer shell casing is arranged between the outer shell casing and the tube-side, the end of the tube-side outer shell casing close to the tube-side inlet is a sealed end, which is fixedly and sealedly connected to the outer side of the tube-side, the other end of the tube-side outer shell casing is an open end, and the cavity formed between the tube-side and the tube-side outer shell casing is a guide cavity; the tube-side inner shell casing enters the tube-side from the side wall of the tube-side outlet, and then passes through the inner wall of the tube-side to connect to the guide cavity, and the shell-side inlet is connected to the head end of the tube-side inner shell casing.
[0010] Preferably, the evaporator inlet is provided with one or more.
[0011] Preferably, the main gas line is connected to the top of the evaporator outlet pipeline.
[0012] During heating, the refrigerant coming out of the evaporator (which acts as a condenser during heating) is in a gas-liquid mixed state. The main gas line is connected to the upper part of the evaporator outlet pipeline, mainly so that most of the gas phase and a small part of the liquid phase are connected to the shell side inlet of the heat exchanger through the main gas line. The main liquid line is connected to the evaporator outlet pipeline, and most of the liquid phase and a small part of the gas phase are connected to the heat exchanger tube side inlet through the main liquid line to complete the preliminary gas-liquid separation. The refrigerant in the main gas line is cut off by the electronic expansion valve. When the refrigerant reaches the shell side heat exchanger inlet, a small amount of liquid refrigerant flash vaporizes and absorbs heat, and the tube side is cooled, so that a small amount of gas phase refrigerant in the tube side is liquefied, and the refrigerant achieves complete gas-liquid separation in the heat exchanger. Through the distribution of the main gas distributor and the main liquid distributor, the refrigerants in the tube side and the shell side converge at each inlet of the evaporator, and the gaseous refrigerant is sprayed into the evaporator, driving the liquid-phase refrigerant to enter the evaporator faster, forming an expansion and suction phenomenon, increasing the refrigerant circulation speed, and improving the heat absorption and oil return process; at the same time, the gaseous refrigerant blows away the liquid-phase refrigerant to form small mist droplets that are easier to evaporate, thereby improving the evaporation effect.
[0013] Similar to ordinary air conditioners and other cooling and heating equipment, when cooling, the cycle process is reversed and the operating effect is similar.
[0014] The refrigerant of the traditional air conditioner will accumulate in the bottom pipe of the evaporator or condenser, affecting the evaporation efficiency; the refrigerant of the air conditioner of the utility model will accumulate at the bottom of the filter reservoir, and the effects of the evaporator and condenser can be fully exerted.
[0015] The beneficial effects of the utility model are:
[0016] 1. The utility model increases the refrigerant circulation speed and improves the heat absorption and oil return process by realizing the expansion jet absorption phenomenon.
[0017] 2. The utility model atomizes the liquid phase refrigerant entering the condenser to improve the evaporation effect.
[0018] 3. The utility model will not cause liquid to accumulate in the bottom pipes of the condenser and the evaporator, and its effect can be fully exerted.
[0019] 4. The utility model has complete gas-liquid separation and good evaporation effect. No liquid will enter the compressor, which will not cause compressor overload and increase the service life of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 Schematic diagram of the gas-liquid phase separation absorption expansion evaporation system
[0021] Figure 2 Four-tube heat exchanger
[0022] In the figure: 1 is an evaporator; 2 is a condenser; 3 is a heat exchanger; 4 is an evaporator outlet pipeline; 5 is a main gas line; 6 is a main liquid line; 7 is a main gas outlet pipeline; 8 is a main liquid outlet pipeline; 9 is a main gas distributor; 10 is a main liquid distributor; 11 is a main gas distribution line; 12 is a main liquid distribution line; 31 is a tube side; 32 is an outer shell casing; 33 is an outer tube side casing; 34 is an inner tube side casing; 35 is a shell side outlet; 36 is a flow guide cavity; 37 is a shell side inlet; 311 is a tube side inlet; 312 is 312; 51 is an electronic expansion valve 1; 81 is an electronic expansion valve 2; 82 is a one-way valve; 83 is a capillary line; 84 is a filtered liquid reservoir. DETAILED DESCRIPTION
[0023] Example 1
[0024] A gas-liquid phase separation absorption expansion evaporation system, a heat exchanger 3 is connected between a condenser 2 and an evaporator 1, the evaporator outlet pipeline 4 is connected to the heat exchanger tube side inlet through a main liquid line 6, the evaporator outlet pipeline 4 is connected to the heat exchanger shell side inlet through a main gas line 5, and an electronic expansion valve 51 is provided on the main gas line 5; the heat exchanger tube side outlet is connected to a main liquid distributor 10 through a main liquid outlet pipeline 8, the heat exchanger shell side outlet is connected to a main gas distributor 9 through a main gas outlet pipeline 7, and the main liquid outlet The pipeline 8 is provided with a filter reservoir 84, an electronic expansion valve 81 and a capillary tube 83 in sequence. The filter reservoir 84 is arranged below the heat exchanger 3. A one-way valve 82 is provided on the cross-line of the electronic expansion valve 81. The direction of the one-way valve 82 is from the main liquid distributor 10 to the heat exchanger 3. The main gas distribution line 11 of the main gas distributor 9 and the main liquid distribution line 12 of the main liquid distributor 10 are combined and connected to each inlet of the evaporator 1, and the outlet of the main liquid distribution line 12 is arranged above the outlet of the main gas distribution line 11.
[0025] The heat exchanger 3 is a four-tube heat exchanger, which includes an outer shell sleeve 32, a tube-side outer sleeve 33, a tube-side 31 and a tube-side inner sleeve 34; the outer shell sleeve 32 is sleeved on the outside of the tube-side 31, and the shell-side outlet 35 is arranged on the outer shell sleeve 32 at one end of the tube-side inlet 311, the tube-side outer sleeve 33 is arranged between the outer shell sleeve 32 and the tube-side 31, the end of the tube-side outer sleeve 33 close to the tube-side inlet 311 is a sealed end, which is fixedly and sealedly connected to the outer side of the tube-side 31, the other end of the tube-side outer sleeve 33 is an open end, and the cavity formed between the tube-side 31 and the tube-side outer sleeve 33 is a guide cavity 36; the tube-side inner sleeve 34 enters the tube-side 31 from the side wall of the tube-side outlet 312, and then passes through the inner wall of the tube-side to connect to the guide cavity 36, and the shell-side inlet 37 is connected to the head end of the tube-side inner sleeve 34.
[0026] The evaporator 1 is provided with one or more inlets.
[0027] The main gas line 5 is connected to the top of the evaporator outlet pipeline 4 .
[0028] The utility model realizes the expansion jet absorption phenomenon, increases the refrigerant circulation speed, improves the heat absorption and oil return process, and atomizes the liquid phase refrigerant entering the condenser 2 to improve the evaporation effect. No liquid will accumulate in the bottom pipelines of the condenser 2 and the evaporator 1, and its effect can be fully exerted.
[0029] The utility model has complete gas-liquid separation and good evaporation effect, and no liquid will enter the compressor, which will not cause compressor overload and prolong the service life of the compressor.
Claims
1. A gas-liquid phase separation absorption expansion evaporation system, characterized in that: A heat exchanger (3) is connected between the condenser (2) and the evaporator (1); the evaporator outlet pipeline (4) is connected to the heat exchanger tube side inlet via a main liquid line (6); the evaporator outlet pipeline (4) is connected to the heat exchanger shell side inlet via a main gas line (5); the main gas line (5) is provided with an electronic expansion valve (51); the heat exchanger tube side outlet is connected to a main liquid distributor (10) via a main liquid outlet pipeline (8); the heat exchanger shell side outlet is connected to a main gas distributor (9) via a main gas outlet pipeline (7); the main liquid outlet pipeline (8) is provided with a filter liquid storage device (11); The evaporator (1) is provided with a filter reservoir (84), an electronic expansion valve (81) and a capillary tube (83), wherein the filter reservoir (84) is arranged below the heat exchanger (3), a check valve (82) is arranged on the crossover line of the electronic expansion valve (81), and the direction of the check valve (82) is from the main liquid distributor (10) to the heat exchanger (3); the main gas distribution line (11) of the main gas distributor (9) and the main liquid distribution line (12) of the main liquid distributor (10) are combined and connected to each inlet of the evaporator (1), and the outlet of the main liquid distribution line (12) is arranged above the outlet of the main gas distribution line (11).
2. A gas-liquid phase separation absorption expansion evaporation system according to claim 1, characterized in that: The heat exchanger (3) is a four-tube heat exchanger, comprising an outer shell casing (32), a tube side outer shell casing (33), a tube side (31), and a tube side inner shell casing (34); the outer shell casing (32) is sleeved on the outside of the tube side (31), and the shell side outlet (35) is arranged on the outer shell casing (32) at one end of the tube side inlet (311); the tube side outer shell casing (33) is arranged between the outer shell casing (32) and the tube side (31), and the tube side outer shell casing (33) is close to the tube side inlet. One end of the shell (311) is a sealed end, which is fixedly and sealedly connected to the outer side of the tube side (31); the other end of the tube side outer sleeve (33) is an open end; the cavity formed between the tube side (31) and the tube side outer sleeve (33) is a flow guide cavity (36); the tube side inner sleeve (34) enters the tube side (31) from the side wall of the tube side outlet (312), and then passes through the tube side inner wall to connect to the flow guide cavity (36); the shell side inlet (37) is connected to the head end of the tube side inner sleeve (34).
3. The gas-liquid phase separation absorption expansion evaporation system according to claim 1, characterized in that: The evaporator (1) is provided with one or more inlets.
4. The gas-liquid phase separation absorption expansion evaporation system according to claim 1, characterized in that: The main gas line (5) is connected to the top of the evaporator outlet pipeline (4).