CN217584951U - Multi-temperature cooling device of refrigerator - Google Patents

Abstract

The utility model discloses a refrigerator multi-temperature heat sink, including refrigerating unit and main refrigerating fluid storage tank, still include two at least time refrigerating fluid storage tanks, every time refrigerating fluid storage tank corresponds a heat exchanger, the export of main cold night storage tank connect main refrigerating fluid storage tank import behind every heat exchanger through the pipeline of taking the circulating pump for outside cooling and respectively through the tube coupling of taking the change pump, the export of every time refrigerating fluid storage tank connects this time refrigerating fluid storage tank import behind the heat exchanger that the correspondence of the tube coupling of taking the change pump is for outside cooling and through the pipeline of taking the change pump, the utility model has the characteristics of a tractor serves several purposes, satisfy reaction type, energy saving and consumption reduction, reduce cost of different temperatures in the production process.

Description

Multi-temperature cooling device of refrigerator

Technical Field

The utility model belongs to the technical field of industry refrigeration cooling equipment, especially, relate to a refrigerator multiple temperature heat sink.

The method is applied to the production fields of chemical industry, medicine, food and the like, and is used for meeting the requirements of different section temperatures in the production process.

Background

Often involve cooling in the fine chemical production, the process is more narrow to the interval of temperature requirement a bit, it can only refrigerate out a temperature operating mode simultaneously to be a refrigerator at present commonly used in the fine chemical industry, generally choose the minimum temperature for use, refrigeration process energy consumption is great, but actually in the use, different equipment in same workshop has different temperature requirements in the use, can appear energy waste when using low temperature refrigerating fluid when the demand normal atmospheric temperature, when requiring slow cooling, gradient cooling uses low temperature refrigerating fluid can cause the product to become the wall, the unqualified phenomenon of impurity. The concentration cooling also is to select suitable refrigerating fluid according to the boiling point of different solvents in the production process, also put forward different requirements to the refrigerating fluid like this, the solvent that the boiling point is low can not cause the rate of recovery to reduce if the refrigerating fluid temperature is high, the while air pollution, if the melting point of concentrated solvent is than lower, use low temperature refrigerating fluid to make the solvent solidify easily, block up the condenser, the equipment suppresses the pressure phenomenon, no matter it is not cooled down or supercooled to cause the equipment to suppress the pressure and probably make flammable explosive solvent volatilize to the production site, burning explosion will appear when the concentration reaches the explosion limit, there is great potential safety hazard.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to improve the not enough of prior art and provide a refrigeration machine multi-temperature heat sink through a refrigeration plant prepare out the cryogenic fluid of different temperatures through the heat exchange many times, satisfy the different temperature requirements of production process, reduce refrigeration plant and drop into, reach energy saving and consumption reduction purpose.

The utility model aims at realizing like this, a refrigerator multiple temperature heat sink, including refrigerating unit and main cryogenic fluid storage tank, its characteristics are still including two at least inferior cryogenic fluid storage tanks, every inferior cryogenic fluid storage tank corresponds a heat exchanger, the export of main cold night storage tank connect main cryogenic fluid storage tank import after every heat exchanger that the pipeline of taking the scavenging pump gives outside cooling and passes through the tube coupling of taking the scavenging pump respectively through the pipeline of taking the circulating pump, the export of every inferior cryogenic fluid storage tank connects this time cryogenic fluid storage tank import after the heat exchanger that the pipeline of taking the circulating pump is given outside cooling and is connected through the correspondence of taking the tube coupling of scavenging pump.

In order to further realize the utility model discloses a purpose, can be main cryogenic fluid storage tank, the refrigerant temperature in every time cryogenic fluid storage tank different, the refrigerant temperature in the main cryogenic fluid storage tank is minimum, and in all time cryogenic fluid storage tanks, the temperature of refrigerant is less than the temperature of refrigerant in the secondary cryogenic fluid storage tank of back level in the inferior cryogenic fluid storage tank of preceding stage.

In order to further realize the utility model discloses a purpose can be and still be equipped with temperature control system, temperature control system be used for controlling the switch of each circulating pump and detect the interior refrigerant temperature of inferior refrigerating fluid storage tank to start corresponding exchange pump and begin the heat exchange and close corresponding exchange pump and stop the heat exchange when the refrigerant temperature reaches the settlement temperature upper limit and close the lower limit of temperature.

Compared with the prior art, the utility model has the following characteristics of showing and positive effect: the utility model discloses a refrigerating unit refrigerates, and main refrigerating fluid storage tank is connected with the heat exchanger that corresponds and is formed main cooling device, and multistage inferior refrigerating fluid storage tank is connected with the heat exchanger that corresponds and is formed inferior cooling device, and main cooling device forms parallelly connected relation with multistage cooling device, can accomplish a tractor serves several purposes, through a refrigerating unit, prepares out the refrigerating fluid of different temperatures, and each time cooling device's the switch or the opening do not influence each other. The refrigerating fluid makes the refrigerating fluid of different refrigerating fluid storage tanks reach different temperatures through multistage heat exchange, adds corresponding heat exchanger between the refrigerating fluid storage tank of difference, and the liquid of different temperatures carries out the energy exchange, and automatic temperature control system in addition, when the refrigerating fluid temperature reached and predetermines the temperature lower limit, 2 exchange pumps of connecting heat exchanger will automatic shutdown, can open the exchange pump automatically when the temperature reaches and set for the upper limit and continue the cooling work. The refrigerating fluid of different refrigerating fluid tanks is provided with a separate circulating pump to convey the refrigerating fluid to required external equipment. The temperature of the general demand of crystallization in the production process is about-10 ℃, the special crystallization needs-20-30 ℃ (few), the general circulating water that is used commonly is concentrated and cooled, but the temperature of the circulating water has a great relation with season, generally summer can't satisfy the cooling demand basically, at this moment use the utility model discloses the low temperature water that generates to cool down is the best choice (0-7 ℃). The utility model provides a realize the requirement of different temperatures with a refrigerator in the production process, can practice thrift the cost greatly like this, including automatic control device on equipment, equipment just can accomplish automatically to open and stop, realizes the temperature requirement of settlement to automatic replacement manual operation improves productivity, reduces intensity of labour.

Drawings

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

In the figure: 1. the refrigerating unit comprises a refrigerating unit, 2, a main refrigerating fluid storage tank, 3, a first refrigerating fluid storage tank, 4, a first heat exchanger, 5, a second refrigerating fluid storage tank, 6, a second heat exchanger, 7, a main circulating pump, 8, a first exchange pump, 9, a second exchange pump, 10, a third exchange pump, 11, a fourth exchange pump, 12, a first circulating pump, 13, a second circulating pump, 14 and a temperature control system.

Detailed Description

The utility model provides a many temperature heat sink of refrigerator, refers to fig. 1, includes refrigerating unit 1 and main cryogenic fluid storage tank 2, still includes two at least inferior cryogenic fluid storage tanks, every inferior cryogenic fluid storage tank corresponds a heat exchanger, the export of main cold night storage tank connect main cryogenic fluid storage tank import behind every heat exchanger that the pipeline of taking the switching pump gives the outside cold supply and respectively through the tube coupling of taking the switching pump, the export of every inferior cryogenic fluid storage tank connects this time cryogenic fluid storage tank import behind the heat exchanger that the pipeline of taking the circulating pump gives the outside cold supply and through the tube coupling's of taking the switching pump correspondence. The temperature of the refrigerants in the main refrigerating fluid storage tank and each secondary refrigerating fluid storage tank is different, the temperature of the refrigerants in the main refrigerating fluid storage tank is the lowest, and in all the secondary refrigerating fluid storage tanks, the temperature of the refrigerants in the front-stage secondary refrigerating fluid storage tank is lower than that of the refrigerants in the rear-stage secondary refrigerating fluid storage tank.

This embodiment adopts two secondary refrigerant liquid storage tanks and two heat exchangers that correspond, first secondary refrigerant liquid storage tank 3 and the first heat exchanger 4 that corresponds, second secondary refrigerant liquid storage tank 5 and the second heat exchanger 6 that corresponds, refrigerating unit 1 is connected with main refrigerant liquid storage tank 2 and is formed the return circuit, refrigerating unit 1 provides the low temperature refrigerant for main refrigerant liquid storage tank 2, an export of main refrigerant liquid storage tank 2 provides the cold source for the outside through the pipeline of taking main circulating pump 7, this way is the minimum cold source of temperature, another two exports of main refrigerant liquid storage tank 2 are respectively through taking first exchange pump 8, the pipe connection first heat exchanger 4 of second exchange pump 9, second heat exchanger 6 forms the return circuit, an export of first secondary refrigerant liquid storage tank 3 is through taking the pipe connection first heat exchanger 4 of third exchange pump 10 and forming the return circuit, another export of first secondary refrigerant liquid storage tank 3 is through taking the pipeline of first circulating pump 12 to provide the cold source for the outside, this way of temperature is higher than the temperature that main refrigerant liquid storage tank 2 provided, an export of second secondary refrigerant liquid storage tank 5 is taken through the fourth exchange pump 11 and is provided the temperature of this kind of the third refrigerating unit and is provided the cold source with the pipeline respectively, this kind of the export of the third refrigerating unit, this kind of temperature is provided the temperature that the third refrigerating unit is taken the cold source through the pipeline and is provided the third refrigerating unit 13.

A temperature control system 14 can be further provided, wherein the temperature control system 14 is used for controlling the on and off of each circulation pump and detecting the temperature of the refrigerant in the secondary refrigerating fluid storage tank, and starting the corresponding exchange pump to start heat exchange when the temperature of the refrigerant reaches a set upper temperature limit and closing the corresponding exchange pump to stop heat exchange when the temperature of the refrigerant reaches a set lower temperature limit, in this embodiment, when the temperature control system 14 detects that the temperature of the refrigerant in the primary refrigerating fluid storage tank 3 reaches the set upper temperature limit, the first exchange pump 8 and the third exchange pump 10 are started, so that the refrigerant in the primary refrigerating fluid storage tank 2 and the refrigerant in the primary refrigerating fluid storage tank 3 exchange heat in the first heat exchanger 4, the refrigerant in the primary refrigerating fluid storage tank 3 is cooled, and when the temperature reaches the set lower temperature limit, the temperature control system 14 closes the first exchange pump 8 and the third exchange pump 10 to stop heat exchange; similarly, when the temperature control system 14 detects that the temperature of the refrigerant in the secondary refrigerant liquid storage tank 5 reaches the upper limit of the set temperature, the first exchange pump 8 and the fourth exchange pump 11 are started, so that the refrigerant in the secondary refrigerant liquid storage tank 5 and the refrigerant in the main refrigerant liquid storage tank 2 exchange heat in the second heat exchanger 6, the refrigerant in the secondary refrigerant liquid storage tank 5 is cooled, and when the temperature reaches the lower limit of the set temperature, the temperature control system 14 closes the first exchange pump 8 and the fourth exchange pump 11 to stop heat exchange; when a refrigerant is needed in an external workshop or the like, the temperature control system 14 controls the corresponding main circulation pump 7, the first circulation pump 12 or the second circulation pump 13 to be started according to different temperatures of the needed refrigerant so as to provide the needed refrigerant.

Use the utility model discloses the time, with the temperature of setting for main cryogenic fluid storage tank 2 be-25-, -15 ℃, the temperature of cryogenic fluid storage tank for the first time is-15-, -5 ℃, the temperature of cryogenic fluid storage tank for the second time is 0 ℃ -7 ℃, open refrigerating unit 1 and temperature control system 14, begin to work, when each time cryogenic fluid storage tank does not reach the settlement temperature lower limit, the refrigerant of each cryogenic fluid storage tank passes through the exchange pump, heat exchanger carries out the heat exchange, after second cryogenic fluid storage tank 5 reaches the settlement temperature lower limit, temperature control system 14 controls second exchange pump 9, fourth exchange pump 11 autostop, after 3 temperatures of cryogenic fluid storage tank reach the settlement temperature lower limit for the first time, temperature control system controls first exchange pump 8, third exchange pump 10 autostop, reach the settlement temperature when main cryogenic fluid storage tank 2, refrigerating unit 1 autostop operation. When the workshop begins to use, temperature control system 14 selects to open corresponding circulating pump and the valve of different freezing storage tanks according to the temperature requirement of difference, reaches the purpose of cooling, and when any temperature in 3 refrigerating fluid storage tanks is higher than the settlement temperature, all can start chain exchange pump and carry out the heat exchange and continue the cooling.

Claims (3)

1. The utility model provides a refrigerator multi-temperature heat sink, includes refrigerating unit and main cryogenic fluid storage tank, characterized by still includes two at least inferior cryogenic fluid storage tanks, and every inferior cryogenic fluid storage tank corresponds a heat exchanger, the export of main cold night storage tank connect main cryogenic fluid storage tank import after giving outside cooling and respectively through every heat exchanger of the tube coupling of taking the change-over pump through the pipeline of taking the circulating pump, the export of every inferior cryogenic fluid storage tank connects this time cryogenic fluid storage tank import after giving outside cooling and the heat exchanger that the correspondence of the tube coupling through taking the change-over pump is through the pipeline of taking the circulating pump.

2. The multi-temperature cooling device for refrigerators as claimed in claim 1, wherein the temperature of the refrigerant in the main refrigerant fluid storage tank is different from that in each of the sub-refrigerant fluid storage tanks, the temperature of the refrigerant in the main refrigerant fluid storage tank is the lowest, and the temperature of the refrigerant in the preceding sub-refrigerant fluid storage tank is lower than that in the succeeding sub-refrigerant fluid storage tank in all the sub-refrigerant fluid storage tanks.

3. The multi-temperature cooling device for refrigerators as claimed in claim 1, further comprising a temperature control system for controlling the on/off of each circulation pump and detecting the temperature of the refrigerant in the sub-refrigerant fluid storage tank, and starting the corresponding heat exchange pump to start heat exchange when the temperature of the refrigerant reaches an upper limit of a set temperature and stopping the heat exchange when the temperature of the refrigerant reaches a lower limit of the set temperature.

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