CN210980414U - Energy-saving refrigerating system of high-low temperature alternating damp-heat test box - Google Patents
Energy-saving refrigerating system of high-low temperature alternating damp-heat test box Download PDFInfo
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- CN210980414U CN210980414U CN201922189626.2U CN201922189626U CN210980414U CN 210980414 U CN210980414 U CN 210980414U CN 201922189626 U CN201922189626 U CN 201922189626U CN 210980414 U CN210980414 U CN 210980414U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The utility model discloses an energy-conserving refrigerating system of high low temperature reversal damp heat test case relates to the refrigeration technology field, and its technical scheme main points are including condenser, evaporimeter, a group's pipeline that is used for supplying the A condensing agent to flow and be used for supplying the B group's pipeline that the B condensing agent flows, A group's pipeline and B group's pipeline communicate condenser and evaporimeter respectively in order to constitute solitary closed circuit, A group's pipeline is including high temperature capillary and the medium temperature capillary of intercommunication respectively on the output of condenser and the input of evaporimeter, be equipped with the high temperature valve on the high temperature capillary, be equipped with the medium temperature valve on the medium temperature capillary, the high temperature capillary is less than the medium temperature capillary at condensing agent infusion volume timing flow. The technical effect is that the corresponding valve is switched on and off to adjust the refrigerant to flow through different pipelines so as to adjust the refrigeration power, and the energy-saving and power-saving effects are achieved.
Description
Technical Field
The utility model relates to a refrigeration technology field, in particular to energy-conserving refrigerating system of high low temperature reversal humid heat test case.
Background
The high-low temperature alternating damp-heat test box is an important means for testing and verifying various electrical properties and physical properties of materials in high-low temperature or damp-heat alternating environments of aviation space products, information electronic instruments, materials, electricians, vehicles, metals, electronic products and various electronic components; it can perform multiple climate environment tests such as high-temperature storage, low-temperature storage, high-temperature high-humidity, humidity and heat alternation, etc. The refrigeration system adopted by the existing high-low temperature alternating damp-heat test box generally performs the working procedures of compression → condensation heat release → expansion → evaporation heat absorption through the mutual cooperation of a condenser, a compressor and an evaporator, and realizes refrigeration by utilizing the reverse Carnot cycle principle.
However, in the prior art, the same line is typically used to circulate the refrigerant. When the geometry of the capillary tube is determined, the refrigerant flow through the capillary tube is determined at a certain condensing pressure and evaporating pressure. This requires that the amount of refrigerant to be added must be accurate, and excessive refrigerant remains in the condenser, increases the condensing pressure, reduces the cooling capacity, increases the power consumption, and frosts on the muffler. On the contrary, the filling amount is too small, so that the refrigeration capacity is insufficient, the steam in the evaporator is overheated, and the return air temperature of the low-pressure pipe is too high, so that the temperature of the compressor is increased, the efficiency is reduced, and the refrigeration capacity is reduced. Therefore, when the amount of refrigerant to be injected is constant, and the condensing pressure and the evaporating pressure are changed to change the cooling efficiency, the geometry of the capillary tube needs to be changed, and the conventional cooling system cannot meet the requirement.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an energy-conserving refrigerating system of high low temperature reversal damp heat test case, it has energy-conserving power saving's effect through the different pipelines of the corresponding valve adjustment condensing agent flow through of switch in order to adjust refrigeration power.
The above technical purpose of the present invention can be achieved by the following technical solutions:
the utility model provides an energy-conserving refrigerating system of high low temperature alternation moist heat test chamber, includes condenser, evaporimeter, is used for supplying the A group's pipeline that A condensing agent flows and is used for supplying the B group's pipeline that B condensing agent flows, A group's pipeline and B group's pipeline communicate condenser and evaporimeter respectively in order to constitute solitary closed circuit, A group's pipeline is including high temperature capillary and the medium temperature capillary that communicates respectively on the output of condenser and the input of evaporimeter, be equipped with the high temperature valve on the high temperature capillary, be equipped with the medium temperature valve on the medium temperature capillary, the high temperature capillary is less than the medium temperature capillary at condensing agent infusion volume timing flow.
By adopting the technical scheme, the group B of condensing agents circulate between the condenser and the evaporator through the group B of pipelines, and the condensing agents are evaporated in the evaporator to absorb heat and are condensed in the condenser to release heat, so that the heat at the installation position of the evaporator is transferred to the installation position of the condenser. When the temperature is higher, the medium temperature valve is closed, the high temperature valve is opened, and the condensing agent A enters the evaporator along the high temperature capillary tube to be evaporated and absorb heat; when the temperature is lower, the medium temperature valve is opened, the high temperature valve is closed, and the condensing agent A enters the evaporator along the medium temperature capillary tube to be evaporated and absorb heat. The flow of the high-temperature capillary tube is lower than that of the medium-temperature capillary tube at a certain time of the flushing amount of the condensing agent, and the lower the flow of the condensing agent is, the lower the power consumption is. When the refrigeration requirements are different, the medium-temperature valve and the high-temperature valve are correspondingly opened and closed, so that the refrigeration power and the refrigeration effect are changed, and the energy-saving and environment-friendly effects are realized.
Further setting: the group A pipeline further comprises a group A compressor, the input end of the group A compressor is connected with the output end pipeline of the evaporator, and the output end of the group A compressor is connected with the input end pipeline of the condenser.
By adopting the technical scheme, the compressor in the group A sucks low-pressure gas flowing out of the evaporator, lifts the low-pressure gas into high-pressure gas, and pumps the high-pressure gas into the condenser, so that the working flow of compression → condensation heat release → expansion → evaporation heat absorption is realized by matching the compressor in the group A with the condenser and the evaporator.
Further setting: the heat exchanger is characterized by further comprising a heat exchanger arranged between the output end of the condenser and the input end of the evaporator, the heat medium input end and the heat medium output end of the heat exchanger are connected to the group B pipeline, the group A pipeline further comprises a low-temperature capillary tube communicated with the refrigerant input end and the condenser output end of the heat exchanger, a low-temperature valve is arranged on the low-temperature capillary tube, and the refrigerant output end of the heat exchanger is connected with an input end pipeline of the group A compressor.
By adopting the technical scheme, the opening temperature corresponding to the low-temperature valve is lower than that of the medium-temperature valve, when the required temperature is lower than that corresponding to the medium-temperature valve, the low-temperature valve is opened, the medium-temperature valve is closed, the A condensing agent enters the heat exchanger through the low-temperature capillary tube and cools the B refrigerant flowing into the heat exchanger, so that the temperature of the B refrigerant flowing into the evaporator is lower, and the refrigeration effect is better.
Further setting: the inside cooling zone that is used for carrying out the cooling to A compressor of group that is equipped with of A compressor, A group's pipeline still includes the output of intercommunication evaporimeter and the cooling capillary of cooling zone, be provided with the cooling valve on the cooling capillary, the one end pipe connection of cooling capillary is kept away from to the cooling zone in the input of condenser.
Through adopting above-mentioned technical scheme, A group's compressor can generate heat when the operation, will make compression efficiency descend when the heat is higher, when the temperature of A group's compressor is higher than the threshold value that the cooling valve corresponds, the cooling valve is opened, and the A condensing agent cools off A group's compressor through the cooling segment that the cooling capillary entered in A group's compressor to guarantee the operating efficiency of A group's compressor.
Further setting: the group B pipeline comprises a group B compressor connected with an output end pipeline of the evaporator, and an output end of the group B compressor is connected with an input end pipeline of the condenser.
Through adopting above-mentioned technical scheme, B compressor of group can compress the B condensing agent for the cooling effect of B condensing agent after getting into the condenser is better, in order to adapt to lower cooling demand.
Further setting: the group B pipeline comprises an oil-water separator arranged between the group B compressor and the condenser, and an oil return pipe of the oil-water separator is connected to the group B compressor.
By adopting the technical scheme, because the high-pressure steam discharged from the compressor is mixed with the lubricating oil steam, the oil-water separator separates oil particles in the high-pressure steam under the action of gravity according to the oil separating principle of reducing the air flow speed and changing the air flow direction, so that the heat transfer effect in the condenser and the evaporator can be improved, and the lubricating oil can be recycled.
Further setting: the A group of pipelines comprise one-way valves arranged between the evaporator and the A group of compressors, and the flow direction in the one-way valves is pointed to the A group of compressors by the evaporator.
Through adopting above-mentioned technical scheme, the check valve can make the pipeline one-way intercommunication between evaporimeter and the A compressor of group, avoids the backward flow.
Further setting: the pipe diameter of the medium-temperature capillary is equal to that of the high-temperature capillary, and the pipe length of the medium-temperature capillary is smaller than that of the high-temperature capillary.
Further setting: the pipe diameter of the low-temperature capillary is equal to that of the medium-temperature capillary, and the pipe length of the low-temperature capillary is smaller than that of the medium-temperature capillary.
By adopting the technical scheme, when the filling amount of the refrigerant is constant, the longer the length of the capillary tube is, the smaller the power consumption is, and the smaller the refrigerating capacity is.
Further setting: the temperature threshold corresponding to the opening of the low-temperature valve is lower than that of the medium-temperature valve, and the temperature threshold corresponding to the opening of the medium-temperature valve is lower than that of the high-temperature valve.
Through adopting above-mentioned technical scheme, form temperature gradient between low temperature valve, the medium temperature valve and the high temperature valve, can open different valves according to the refrigeration needs of difference to reach different refrigeration effects, can realize temperature control, energy-concerving and environment-protective simultaneously.
To sum up, the utility model discloses following beneficial effect has:
1. the refrigeration power is adjusted by switching on and off corresponding valves to adjust the flow of the condensing agent through different pipelines, so that the energy-saving and power-saving effects are achieved;
2. the refrigerating interval is large and the refrigerating effect is good.
Drawings
Fig. 1 is a functional schematic diagram of an energy-saving refrigeration system of a high-low temperature alternating humid heat test chamber in this embodiment.
In the figure, the position of the upper end of the main shaft,
1. a condenser; 2. an evaporator; 3. a heat exchanger;
4. group A of pipelines; 401. a group A compressor; 402. group A of dry filters; 403. a one-way valve; 411. a high temperature capillary tube; 412. a high temperature valve; 421. a medium temperature capillary tube; 422. a medium temperature valve; 431. a low temperature capillary; 432. a low temperature valve; 441. cooling the capillary tube; 442. a cooling valve; 451. connecting a capillary tube;
5. b group of pipelines; 501. a group B compressor; 502. an oil-water separator; 503. an oil return conduit; 504. and B group of drying filters.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
An energy-saving refrigeration system of a high-low temperature alternating humid heat test box refers to fig. 1 and comprises a condenser 1 used for liquefying and releasing heat of a condensing agent, an evaporator 2 used for evaporating and absorbing heat of the condensing agent, a group A pipeline 4 used for flowing the condensing agent A, a group B pipeline 5 used for flowing the condensing agent B, and a heat exchanger 3 which is coupled with the group A pipeline 4 and the group B pipeline 5 to transfer heat of the group B pipeline 5 to the group A pipeline 4, wherein the group A pipeline 4 and the group B pipeline 5 are respectively communicated with the condenser 1 and the evaporator 2 to form an independent closed loop.
Referring to fig. 1, the group a piping 4 includes a group a compressor 401 for compressing a refrigerant, a group a dry filter 402 having an input end connected to an output end of the condenser 1, and a high temperature capillary tube 411, a medium temperature capillary tube 421, a low temperature capillary tube 431, and a cooling capillary tube 441 each connected to an output end of the group a dry filter 402, the group a compressor 401 being connected between an input end of the evaporator 2 and an output end of the condenser 1. A high-temperature valve 412 is arranged between the high-temperature capillary tube 411 and the group a dry filter 402, a medium-temperature valve 422 is arranged between the medium-temperature capillary tube 421 and the group a dry filter 402, a low-temperature valve 432 is arranged between the low-temperature capillary tube 431 and the group a dry filter 402, and in this embodiment, the high-temperature valve 412, the medium-temperature valve 422 and the low-temperature valve 432 are all solenoid valves.
One end of the high-temperature capillary tube 411, which is far away from the high-temperature valve 412, and one end of the medium-temperature capillary tube 421, which is far away from the medium-temperature valve 422 are both communicated with the input end of the evaporator 2, the output end of the evaporator 2 is connected to the input end of the group A compressor 401 through a one-way valve 403 by pipelines, the flow direction in the one-way valve 403 is directed to the group A compressor 401 from the evaporator 2, and the output end of the group A compressor 401 is connected with the input end of the condenser 1 by pipelines, so that a complete.
The end of the low-temperature capillary tube 431 away from the low-temperature valve 432 is connected to the refrigerant input end of the heat exchanger 3 through a pipeline, and the refrigerant output end of the heat exchanger 3 is connected to the input end of the group a compressor 401 through a pipeline. The output end pipeline of the condenser 1 is connected with a group B of drying filters 504, and the heat medium input end pipeline of the heat exchanger 3 is connected with the output end of the group B of drying filters 504. A connection capillary tube 451 is connected to a pipe between the heat medium output end of the heat exchanger 3 and the input end of the evaporator 2.
In this embodiment, the opening temperature corresponding to the opening of the low temperature valve 432 is lower than-4 ℃, the opening temperature corresponding to the opening of the medium temperature valve 422 is lower than that of the high temperature valve 412, in this embodiment, the opening temperature corresponding to the low temperature solenoid valve is lower than-4 ℃ and the opening temperature corresponding to the opening of the medium temperature solenoid valve is-4 ℃ to 47 ℃, the opening temperature corresponding to the high temperature solenoid valve is higher than 47 ℃, the flow rate of the high temperature capillary 411 at a certain time of the refrigerant flushing amount is lower than that of the medium temperature capillary 421, and the flow rate of the medium temperature capillary 421 at a certain time of the refrigerant flushing amount is lower than that of the low temperature capillary 431, in this embodiment, the pipe diameters of the low temperature capillary 431, the medium temperature capillary 421 and the high temperature capillary 411 are all equal, the pipe length of the low temperature capillary 431 is smaller than that of the medium temperature capillary 421, the pipe length of the medium temperature capillary 421 is smaller than that of the high temperature capillary 411, and particularly, in this embodiment, the specification of the low temperature capillary 431 is 1.5mm ×.8m, the specification of the medium temperature.
A cooling section for cooling the compressor 401 in the group A is arranged in the compressor 401, one end of the cooling capillary tube 441, which is far away from the drying filter 402 in the group A, is connected to the cooling section through a pipeline, and one end of the cooling section, which is far away from the cooling capillary tube 441, is connected to the input end of the condenser 1 through a pipeline. When the temperature of the compressor 401 in the group a is higher than a threshold corresponding to the cooling valve 442, the cooling valve 442 is opened, and the refrigerant in the group a enters the cooling section of the compressor 401 in the group a through the cooling capillary tube 441 to cool the compressor 401 in the group a, so as to ensure the operating efficiency of the compressor 401 in the group a.
The group B pipeline 5 comprises a group B compressor 501 connected with an output end pipeline of the evaporator 2 and an oil-water separator 502 connected with an output end pipeline of the group B compressor 501, an output end of the oil-water separator 502 is connected with an input end pipeline of the condenser 1, and an oil return pipe of the oil-water separator 502 is connected with the group B compressor 501 through a pipeline.
The implementation principle of the above embodiment is as follows:
in operation of the system, the B refrigerant flows from the condenser 1 through the filter drier and heat exchanger 3 into the evaporator 2 and evaporates in the evaporator 2 absorbing heat, causing the temperature outside the evaporator 2 to decrease. The gasified A refrigerant flows through the B group compressor 501 and then flows into the condenser 1 through a pipeline, the B refrigerant is liquefied in the condenser 1 to release heat, and the heat is dissipated to the environment.
One of the high temperature valve 412, the medium temperature valve 422 and the low temperature valve 432 is selectively opened according to a desired temperature, and when the high temperature valve 412 or the medium temperature valve 422 is opened, the a refrigerant flows from the condenser 1 into the evaporator 2 through the high temperature capillary tube 411 or the medium temperature capillary tube 421, respectively, and evaporates in the evaporator 2 to absorb heat, so that the temperature outside the evaporator 2 is lowered. The gasified A refrigerant flows through the A group compressor 401 and then is compressed, and then flows into the condenser 1 through a pipeline, the A refrigerant is liquefied in the condenser 1 to release heat, and the heat is dissipated to the environment.
When the low temperature valve 432 is opened, the a condensate flows from the condenser 1 through the low temperature capillary 431 into the heat exchanger 3, the a condensate cools the B condensate in the heat exchanger 3, then flows into the group a compressor 401 through a pipeline, the a condensate flows through the group a compressor 401 and is compressed, then flows into the condenser 1 through a pipeline, the a condensate is liquefied and releases heat in the condenser 1, and the heat is dissipated to the environment. Meanwhile, the group B compressors 501 are turned on, so that the refrigerant B is compressed, and the refrigerant B is cooled better after entering the condenser 1.
When the temperature of the group a compressor 401 exceeds 23 ℃, the cooling valve 442 is opened, and the group a refrigerant enters the cooling section of the group a compressor 401 through the cooling capillary tube 441 to cool the group a compressor 401. The A condensing agent flowing out of the cooling section flows into the condenser 1 through a pipeline, the A condensing agent is liquefied and releases heat in the condenser 1, and the heat is dissipated to the environment.
The above-mentioned embodiments are merely illustrative of the present invention, and are not intended to limit the present invention, and those skilled in the art can make modifications of the present embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent law within the scope of the present invention.
Claims (10)
1. An energy-saving refrigeration system of a high-low temperature alternating humid heat test chamber is characterized by comprising a condenser (1), an evaporator (2), a group A pipeline (4) for a condensing agent A to flow and a group B pipeline (5) for a condensing agent B to flow, the group A pipeline (4) and the group B pipeline (5) are respectively communicated with the condenser (1) and the evaporator (2) to form an independent closed loop, the group A pipeline (4) comprises a high-temperature capillary tube (411) and a medium-temperature capillary tube (421) which are respectively communicated with the output end of the condenser (1) and the input end of the evaporator (2), a high temperature valve (412) is arranged on the high temperature capillary tube (411), a medium temperature valve (422) is arranged on the medium temperature capillary tube (421), the flow rate of the high-temperature capillary tube (411) is lower than that of the medium-temperature capillary tube (421) at a certain time of the refrigerant flushing amount.
2. The energy-saving refrigeration system of the high-low temperature alternating humid heat test box according to claim 1, wherein the group A pipeline (4) further comprises a group A compressor (401), an input end of the group A compressor (401) is connected with an output end pipeline of the evaporator (2), and an output end of the group A compressor (401) is connected with an input end pipeline of the condenser (1).
3. The energy-saving refrigeration system of the high-low temperature alternating humid heat test box according to claim 2, characterized by further comprising a heat exchanger (3) arranged between the output end of the condenser (1) and the input end of the evaporator (2), wherein the heat medium input end and the heat medium output end of the heat exchanger (3) are connected to the group B pipeline (5), the group A pipeline (4) further comprises a low-temperature capillary tube (431) communicated with the refrigerant input end of the heat exchanger (3) and the output end of the condenser (1), the low-temperature capillary tube (431) is provided with a low-temperature valve (432), and the refrigerant output end of the heat exchanger (3) is connected to the input end pipeline of the group A compressor (401).
4. The energy-saving refrigeration system of the high-low temperature alternating humid heat test box according to claim 3, wherein a cooling section for cooling the group A compressor (401) is arranged inside the group A compressor (401), the group A pipeline (4) further comprises a cooling capillary tube (441) communicating the output end of the evaporator (2) with the cooling section, a cooling valve (442) is arranged on the cooling capillary tube (441), and one end of the cooling section, which is far away from the cooling capillary tube (441), is connected to the input end of the condenser (1) through a pipeline.
5. The energy-saving refrigeration system of the high-low temperature alternating humid heat test box as claimed in claim 4, wherein the group B pipeline (5) comprises a group B compressor (501) connected with an output end pipeline of the evaporator (2), and an output end of the group B compressor (501) is connected with an input end pipeline of the condenser (1).
6. The energy-saving refrigeration system of the high-low temperature alternating humid heat test box according to claim 5, wherein the group B pipeline (5) comprises an oil-water separator (502) arranged between the group B compressor (501) and the condenser (1), and an oil return pipe of the oil-water separator (502) is connected to the group B compressor (501).
7. The energy-saving refrigeration system of the high-low temperature alternating humid heat test box according to claim 6, characterized in that the group A pipeline (4) comprises a check valve (403) arranged between the evaporator (2) and the group A compressor (401), and the flow direction in the check valve (403) is directed to the group A compressor (401) from the evaporator (2).
8. The energy-saving refrigeration system of the high-low temperature alternating humid heat test chamber as claimed in claim 1, wherein the tube diameter of the medium-temperature capillary tube (421) is equal to that of the high-temperature capillary tube (411), and the tube length of the medium-temperature capillary tube (421) is smaller than that of the high-temperature capillary tube (411).
9. The energy-saving refrigeration system of the high-low temperature alternating humid heat test chamber as claimed in claim 3, wherein the diameter of the low-temperature capillary tube (431) is equal to that of the medium-temperature capillary tube (421), and the length of the low-temperature capillary tube (431) is smaller than that of the medium-temperature capillary tube (421).
10. The energy-saving refrigeration system of the high-low temperature alternating humid heat test box according to claim 3, wherein a temperature threshold value corresponding to the opening of the low-temperature valve (432) is lower than that of the medium-temperature valve (422), and a temperature threshold value corresponding to the opening of the medium-temperature valve (422) is lower than that of the high-temperature valve (412).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922189626.2U CN210980414U (en) | 2019-12-09 | 2019-12-09 | Energy-saving refrigerating system of high-low temperature alternating damp-heat test box |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922189626.2U CN210980414U (en) | 2019-12-09 | 2019-12-09 | Energy-saving refrigerating system of high-low temperature alternating damp-heat test box |
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| CN210980414U true CN210980414U (en) | 2020-07-10 |
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| CN201922189626.2U Active CN210980414U (en) | 2019-12-09 | 2019-12-09 | Energy-saving refrigerating system of high-low temperature alternating damp-heat test box |
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