CN210425385U

CN210425385U - Refrigerating system

Info

Publication number: CN210425385U
Application number: CN201921383473.9U
Authority: CN
Inventors: 高雪峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-24
Filing date: 2019-08-24
Publication date: 2020-04-28
Anticipated expiration: 2029-08-24

Abstract

A refrigeration system has a condenser, an evaporator, a power plant; the evaporator is provided with an evaporation pipeline, a liquid working medium pipeline and a gas working medium pipeline, and metal heat conducting wires are filled in the evaporation pipeline; the condenser is connected with the liquid-gas separator, the liquid-gas separator is connected with the first secondary surface cooler and the first-stage evaporator, the first secondary surface cooler is connected with the first-stage evaporator and the evaporator, the first-stage evaporator is connected with the vacuum cylinder, the first-stage evaporator is connected with the liquid working medium pipeline, the vacuum cylinder is connected with the pressure boosting cylinder, the evaporator is connected with the pressure boosting cylinder, the pressure boosting cylinder is connected with the condenser, and the vacuum cylinder and a piston rod of the pressure boosting cylinder are connected with the power device. The working medium is separated into liquid and gas by the liquid-gas separator, then enters the first-stage evaporator, the liquid and the dried gas enter the evaporator again for evaporation, so as to achieve the purpose of refrigeration, and the gas and liquid discharged by the first-stage evaporator and the evaporator are discharged into the condenser by the pressure boosting cylinder and then enter the liquid-gas separator, thereby completing a cycle.

Description

Refrigerating system

Technical Field

The utility model relates to a refrigeration technology, specifically speaking are refrigerating system.

Background

The existing air-conditioning refrigerating system using freon or tetrafluoroethane as working medium is mainly formed by connecting an evaporator, a compressor, a condenser and an expansion valve in turn. Currently, in refrigeration systems, tetrafluoroethane is mostly used as a working medium instead of freon, and although the working medium overcomes the defects of the freon such as ozone depletion, the working medium has the following problems as a refrigerant: 1. tetrafluoroethane is extremely strong greenhouse gas, the effect of which on the greenhouse gas in the earth atmosphere is 3300 times that of the greenhouse gas carbon dioxide within 20 years of entering the atmosphere, and is still 1300 times that of the carbon dioxide within the next 100 years although attenuation is realized later, and is 400 times that within 500 years; 2. tetrafluoroethane is used as a refrigerant, although no obvious toxicity exists, the phenomenon that air conditioners do not refrigerate and the like frequently occurs when users use the tetrafluoroethane, and most of the phenomenon is the phenomenon of 'lack of fluorine', namely, the refrigerant leaks, and in fact, the refrigerant runs into the atmosphere; 3. the production of tetrafluoroethane is a huge industrial group, and a large amount of toxic and harmful substances inevitably pollute the environment and even cause damage in the production and production process of tetrafluoroethane. The above problems are solved by using a clean refrigerant as the working medium which does not produce the effect of warm room gas, but the current refrigeration systems are not designed successfully in this respect. Therefore, it is a good task to find a refrigeration system using clean refrigerant.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a refrigerating system, this refrigerating system use water and air, or water and the liquid (for example ethanol) mixed liquid and the air of evaporating easily and environmental protection under the low pressure environment as working medium.

In order to achieve the above purpose, the utility model adopts the following scheme:

a refrigeration system has a condenser, an evaporator, a power plant;

the evaporator is provided with a group of parallel evaporation pipelines, the inlet end of each evaporation pipeline is communicated with a liquid working medium pipeline and a gas working medium pipeline, the outlet end of each evaporation pipeline is communicated with a discharge pipeline together, each evaporation pipeline is filled with metal heat conducting wires, the evaporation pipelines are filled with the metal heat conducting wires, the metal heat conducting wires are reliably contacted with the inner walls of the evaporation pipelines, the upper end of the discharge pipeline is a vacuumizing interface, and the lower end of the discharge pipeline is a liquid discharge port;

the outlet of the condenser is connected with the inlet of a liquid-gas separator, the exhaust port of the liquid-gas separator is connected with the inlet of a first secondary surface cooler through a condensation dryer, the outlet of the first secondary surface cooler is connected with the gas inlet of a first-stage evaporator and a gas working medium pipeline of the evaporator, the gas outlet of the first-stage evaporator and the vacuumizing interface of the evaporator are connected with the gas inlet of a vacuum cylinder through a first one-way valve, the liquid outlet of the liquid-gas separator is connected with the liquid inlet of the first-stage evaporator through a heater, and the liquid outlet of the first-stage evaporator is connected with the liquid working medium pipeline of the evaporator through a second secondary surface cooler; the liquid outlet of the vacuum cylinder is connected with the liquid inlet of a pressure rising cylinder through a second one-way valve, the liquid outlet of the evaporator is connected with the liquid inlet of the pressure rising cylinder through a third one-way valve, and the liquid outlet of the pressure rising cylinder is connected with the inlet of the condenser through a fourth one-way valve; the pistons of the vacuum cylinder and the lifting cylinder are respectively provided with a fifth one-way valve and a sixth one-way valve, and the piston rods of the vacuum cylinder and the lifting cylinder are connected with a power device. .

It can be seen from the above scheme that the utility model provides a refrigerating system uses ordinary water and air as working medium, or uses the water that contains ethanol and air as working medium's basic working process does:

the working medium is conveyed into the liquid-gas separator by the condenser and is separated into liquid and gas, the gas enters the condensation dryer for drying, the liquid is heated by the first secondary surface cooler and then enters the primary evaporator, the liquid is heated by the heater and then enters the primary evaporator, the steam after the liquid is fully evaporated is pumped out by the vacuum cylinder, the redundant liquid is discharged by the primary evaporator, the liquid is heated by the second secondary surface cooler and then enters the evaporator, the other part of the dried gas is heated by the first secondary surface cooler and then enters the evaporator, the liquid enters each layer of evaporation pipelines of the evaporator for evaporation, the outer surfaces of the evaporation pipelines and the external air or liquid can exchange heat when the evaporation is cooled, the refrigeration purpose is realized, the gas and the liquid discharged by the primary evaporator and the evaporator enter the liquid-gas separator after entering the condenser for cooling through the vacuum cylinder and the pressure boosting cylinder, one cycle is completed.

The utility model discloses rational in infrastructure, dependable performance, this system need not freon series product, and just uses easy evaporation and the liquid and the air of environmental protection are working medium under the low pressure environment, and for the atmospheric environment, refuse greenhouse gas, realize that green product provides probably. Meanwhile, the internal working circulation pressure of the system is 0-1 atmospheric pressure, so that a high-pressure container and circulation are avoided, the sealing requirement is greatly reduced, the overall power consumption is low, the manufacturing cost is low, and the technology is easier to master.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic view of the evaporator of the embodiment shown in FIG. 1;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

fig. 4 is a view from direction B of fig. 2.

Detailed Description

The present invention will be further described with reference to the following specific embodiments and the accompanying drawings.

See FIG. 1

The utility model provides a refrigerating system, condenser 24 has, evaporimeter 11, the export of condenser 24 meets with the import of a liquid-gas separator 1, the gas vent of liquid-gas separator 1 meets through the import of condensation desicator 5 with first pair surface cooler 7, the export of first pair surface cooler 7 meets with the air inlet of one-level evaporimeter 4 and the gaseous working medium pipeline of evaporimeter 11, the gas outlet of one-level evaporimeter 4 and the evacuation interface of evaporimeter 11 meet with the air inlet of a vacuum cylinder 16 through first check valve 12, the leakage fluid dram of liquid-gas separator 1 meets with the inlet of one-level evaporimeter 4 through heater 3, the leakage fluid dram of one-level evaporimeter 4 meets with the liquid working medium pipeline of evaporimeter 11 through second pair surface cooler 10; the liquid outlet of the vacuum cylinder 16 is connected with the liquid inlet of a pressure rising cylinder 21 through a second one-way valve 15, the liquid outlet of the evaporator 11 is connected with the liquid inlet of the pressure rising cylinder 21 through a third one-way valve 23, and the liquid outlet of the pressure rising cylinder 21 is connected with the inlet of a condenser 24 through a fourth one-way valve 20; the pistons of the vacuum cylinder 16 and the boosting cylinder 21 are respectively provided with a fifth one-way valve 13 and a sixth one-way valve 22, and the piston rods of the vacuum cylinder 16 and the boosting cylinder 21 are connected with a power device.

See fig. 2-4

The utility model provides an evaporimeter 11 has a set of evaporating pipeline 11c that stands side by side, each evaporating pipeline 11 c's entrance point and a liquid working medium 11g and a gas working medium pipeline 11k switch-on, each evaporating pipeline 11 c's exit end is put through with a discharge pipeline 11a jointly, space between every two adjacent evaporating pipelines 11c forms heat exchange passageway 11m, each evaporating pipeline 11c intussuseption is filled with metal heat conduction 11d, metal heat conduction silk 11d is full of the evaporating pipeline, and metal heat conduction silk 11d and evaporating pipeline 11 c's inner wall reliable contact. The metal heat conducting wires 11a and the evaporator 11c can transfer heat, the upper end of the discharge pipeline 11a is a vacuumizing port 11b, and the lower end is a liquid discharge port 11 j.

In this embodiment, the liquid working medium pipeline 11g and the gas working medium pipeline 11k are connected in parallel, the inlet end of each evaporation pipeline 11c is connected with the outer surfaces of the liquid working medium pipeline 11g and the gas working medium pipeline 11k, the liquid working medium pipeline 11g is provided with liquid discharge holes 11f which are communicated with the evaporation pipelines 11c in a one-to-one correspondence manner, and the gas working medium pipeline 11k is provided with exhaust holes 11e which are communicated with the evaporation pipelines in a one-to-one correspondence manner.

In this embodiment, the outlet ends of the evaporation pipelines 11c are connected to the outer wall of a discharge pipeline 11a, and the discharge pipeline 11a is provided with through holes 11h communicated with the evaporation pipelines 11c in a one-to-one correspondence manner. The upper port 11b of the working medium discharge pipeline 11a1 is a vacuum pumping port, and the lower port 11j is a water discharge port.

In addition, in order to better promote the evaporation of the liquid, the metal heat conduction wires 11d in the evaporation pipe 11c are in a disordered net shape or a flocculent shape.

The evaporation principle of the evaporator is as follows: dry air and liquid working medium conveyed by a first-stage device in the refrigerating system respectively enter an evaporation pipeline 11c from a gas working medium pipeline 11k and a liquid working medium pipeline 11g, liquid is evaporated due to the fact that the inside of an evaporator is in a vacuum state, saturated steam generated by evaporation can prevent the liquid from being evaporated continuously, and at the moment, the dry air entering the evaporator can drive the saturated steam to leave the surface of the liquid, so that the evaporation can be carried out continuously; the metal heat conducting wires 11d in the evaporation pipeline 11c not only increase the evaporation area of the working medium liquid, but also can timely transfer the temperature with the evaporator pipeline 11c, so that the low temperature generated by evaporation is timely transferred to the evaporation pipeline 11c to be subjected to heat exchange utilization by people; after entering the discharge pipe 11a, the liquid and the gas are discharged from the upper end and the lower end of the discharge pipe, respectively, providing conditions for continuous circulation.

See FIG. 1

In this embodiment, a first vacuum degree adjusting valve 6 and a second vacuum degree adjusting valve 9 are respectively connected between the outlet of the first secondary surface cooler 7 and the gas inlet of the first-stage evaporator 4 and between the outlet of the first secondary surface cooler and the gas working medium pipeline of the evaporator 11.

In this embodiment, the air outlet of the condensation dryer 5 is connected to the first reservoir 8, and the first reservoir 8 is connected to the liquid inlet of the pressure rising cylinder 21 through the recovery valve 25 and the third check valve 23. The condensed water produced by the gas treated by the condenser dryer 5 enters the first reservoir 8 for storage, and the recovery valve 25 is periodically opened, so that the condensed water can be discharged into the lifting cylinder 21 and finally into the condenser 24.

In this embodiment, a double valve 14 and a second reservoir 17 are indirectly connected between the liquid outlet of the evaporator 11 and the third check valve 23, and the double valve 14 is connected to the air outlet of the condenser dryer 5. The residual liquid in the evaporator 11 flows into the second liquid storage device 17 through the water outlet at the lower part, the discharging device is a double valve 14 which can boost the pressure of the second liquid storage device 9 for a set time in consideration of the vacuum degree in the evaporator 11, the double valve 14 works once in a short time at a certain interval, the channels of the evaporator 11 and the second liquid storage device 17 are closed, meanwhile, the condenser drier 5 is opened to introduce the tie gas into the second liquid storage device 17, the internal pressure is increased, and the liquid in the second liquid storage device 17 enters the boosting cylinder 21 and is discharged into the condenser 24 by the boosting cylinder.

In this embodiment, a liquid flow meter 2 is connected between the drain port of the liquid-gas separator 1 and the heater 3.

In this embodiment, the power device has a motor 19 and a crankshaft 18, a rotating shaft of the motor 19 is coupled to a front journal of the crankshaft 18, and piston rods of the vacuum cylinder 16 and the lift cylinder 21 are coupled to a connecting rod journal of the crankshaft 18, respectively. The motor 19 drives the crankshaft 18, i.e. the vacuum cylinder 16 and the lift cylinder 21.

In the present embodiment, the evaporator 11, the vacuum cylinder 16, and the pressure raising cylinder 21 are conventional products.

As can be seen from fig. 1 and 2, the specific operation process of the refrigeration system provided by the present invention is as follows.

A mixed working medium consisting of a liquid working medium and air containing steam is conveyed into the liquid-gas separator 1 by the condenser 24, and is separated into liquid and gas which are then respectively discharged from an exhaust port and a liquid discharge port of the liquid-gas separator 1;

the gas enters a condensation dryer 5 to be dried, the gas is heated by a first auxiliary surface cooler 7 and then enters a first-stage evaporator 4, and the liquid is heated by a heater 3 and then also enters the first-stage evaporator 4;

in the primary evaporator 4, after the full evaporation of liquid is realized under the combined action of dry gas and vacuum, steam of the liquid is extracted by a vacuum cylinder 16 through an exhaust port, redundant liquid is discharged from a liquid outlet at the bottom of the primary evaporator 4, the liquid is heated by a second secondary surface cooler 10 and then enters an evaporator 11, and the other part of the dried gas is heated by a first secondary surface cooler 7, controlled by a second vacuum degree regulating valve 9 and also enters the evaporator 11;

the evaporator 11 has the double functions of evaporation and surface cooling, the evaporation pipelines 11c of each layer into which the liquid enters flow to the tail ends of the pipelines along the metal heat-conducting wires 11d in the evaporation pipelines 11c and the inner walls of the evaporation pipelines 11c, the liquid is evaporated due to the vacuum environment, and the evaporated saturated steam is driven by dry and thin air to flow to the tail ends, so that the evaporation can be continuously carried out; because the liquid is fully contacted with the metal heat conducting wires, the maximization of the liquid surface is realized, the evaporation of the working medium is facilitated, and the external surface of the liquid can exchange heat and cold with external air or liquid while evaporation cooling is realized, so that the aim of refrigeration is fulfilled; the evaporated steam and working medium gas are sucked away by the vacuum cylinder 16 from the upper end of the discharge pipeline 11a, the redundant liquid is discharged from the lower end of the discharge pipeline 11c under the action of gravity, and the evaporator 11 is obliquely arranged at a certain angle when being arranged so as to ensure the liquid to flow and reach a liquid discharge port;

working medium gas of the first-stage evaporator 4 and working medium gas of the evaporator 11 are pumped into the vacuum cylinder 16, when a piston of the vacuum cylinder 16 moves upwards, sucked gas can enter a cylinder body at the lower part of the piston through the fifth one-way valve 13, and when the piston moves downwards, the gas at the lower part is compressed and discharged out of the cylinder body and enters the lifting cylinder 21;

the working principle of the lifting cylinder 21 is the same as that of the vacuum cylinder, working medium gas entering from the upper part is sent to the lower part of the piston through a sixth one-way valve 22 on the piston, when the piston moves downwards, the gas is pressurized, steam is reduced into liquid, meanwhile, the liquid entering from the upper part is also sent to the lower part and is discharged into a condenser 24 together with the working medium gas;

liquid and gas discharged by the lifting cylinder 21 are discharged into the condenser 24, cooled and then enter the liquid-gas separator 1, and a cycle is completed.

Claims

1. A refrigeration system is provided with a condenser, an evaporator and a power device, and is characterized in that:

the outlet of the condenser is connected with the inlet of a liquid-gas separator, the exhaust port of the liquid-gas separator is connected with the inlet of a first secondary surface cooler through a condensation dryer, the outlet of the first secondary surface cooler is connected with the gas inlet of a first-stage evaporator and a gas working medium pipeline of the evaporator, the gas outlet of the first-stage evaporator and the vacuumizing interface of the evaporator are connected with the gas inlet of a vacuum cylinder through a first one-way valve, the liquid outlet of the liquid-gas separator is connected with the liquid inlet of the first-stage evaporator through a heater, and the liquid outlet of the first-stage evaporator is connected with the liquid working medium pipeline of the evaporator through a second secondary surface cooler; the liquid outlet of the vacuum cylinder is connected with the liquid inlet of a pressure rising cylinder through a second one-way valve, the liquid outlet of the evaporator is connected with the liquid inlet of the pressure rising cylinder through a third one-way valve, and the liquid outlet of the pressure rising cylinder is connected with the inlet of the condenser through a fourth one-way valve; the pistons of the vacuum cylinder and the lifting cylinder are respectively provided with a fifth one-way valve and a sixth one-way valve, and the piston rods of the vacuum cylinder and the lifting cylinder are connected with a power device.

2. The refrigeration system of claim 1, wherein: in the evaporator, a liquid working medium pipeline and a gas working medium pipeline are connected in parallel into a whole, the inlet end of each evaporation pipeline is connected with the liquid working medium pipeline and the outer surface of the gas working medium pipeline, liquid discharge holes communicated with the evaporation pipelines in a one-to-one correspondence mode are formed in the liquid working medium pipeline, and exhaust holes communicated with the evaporation pipelines in a one-to-one correspondence mode are formed in the gas working medium pipeline.

3. The refrigeration system of claim 1, wherein: in the evaporator, the outlet ends of the evaporation pipelines are connected with the outer wall of the discharge pipeline, and the discharge pipeline is provided with through holes which are communicated with the evaporation pipelines in a one-to-one correspondence manner.

4. The refrigeration system of claim 1, wherein: in the evaporator, the metal heat-conducting wires in the evaporation pipeline are in a disordered net shape or a flocculent shape.

5. The refrigeration system of claim 1, wherein: and a first vacuum degree regulating valve and a second vacuum degree regulating valve are respectively connected between the outlet of the first secondary surface cooler, the air inlet of the first-stage evaporator and the gas working medium pipe of the evaporator.

6. The refrigeration system of claim 1, wherein: the air outlet of the condensation dryer is connected with a first liquid storage device, and the first liquid storage device is connected with the liquid inlet of the pressure rising cylinder through a recovery valve and a third one-way valve.

7. The refrigeration system of claim 1, wherein: a double valve and a second liquid storage device are indirectly arranged between the liquid outlet of the evaporator and the third one-way valve, and the double valve is connected with the air outlet of the condenser drier.

8. The refrigeration system of claim 1, wherein: a liquid flow meter is connected between the liquid outlet of the liquid-gas separator and the heater.

9. The refrigeration system of claim 1, wherein: the power device is provided with a motor and a crankshaft, a rotating shaft of the motor is connected with a front journal of the crankshaft, and piston rods of a vacuum cylinder and a boosting cylinder are respectively connected with a connecting rod journal of the crankshaft.