CN204406881U - A kind of super low temperature refrigeration teaching equipment - Google Patents
A kind of super low temperature refrigeration teaching equipment Download PDFInfo
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- CN204406881U CN204406881U CN201520075233.8U CN201520075233U CN204406881U CN 204406881 U CN204406881 U CN 204406881U CN 201520075233 U CN201520075233 U CN 201520075233U CN 204406881 U CN204406881 U CN 204406881U
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Abstract
A kind of super low temperature refrigeration teaching equipment, the refrigeration system comprising evaporator and be communicated with evaporator, evaporator is arranged in casing, casing is connected with the first temperature sensor, refrigeration system comprises the first refrigeration system and the second refrigeration system, circulate in first refrigeration system the first cold-producing medium, circulate in second refrigeration system second refrigerant, second refrigeration system comprises the second compressor, the oil separator that connect successively, and the first outlet of oil separator is connected with the second compressor, second export and be connected with the second condenser; Described second condenser is connected with Intermediate Heat Exchanger, Intermediate Heat Exchanger connects the second device for drying and filtering, the first kapillary and evaporator successively, described evaporator is communicated with the second compressor, and the first refrigeration system is cooled the second refrigerant in the second refrigeration system by Intermediate Heat Exchanger.Temperature in casing is down to lower temperature by refrigeration system by this super low temperature refrigeration teaching equipment, and can train the knowledge of student's two-stage multiplex refrigerating system.
Description
The utility model relates to the technical field of education experimental real-training equipment, particularly a kind of super low temperature refrigeration teaching equipment.
Background technology
At present, along with Global Temperature warms gradually, the raising of people's living standard, refrigeration industry is more and more popular, and teacher imparts knowledge to students in theory, needs to understand for a long time and adapt in a lot of knowledge to reality.Therefore be badly in need of producing meet student object visual to make up this defect, allow student avoid detours, improve Teaching Benefits and quality.And there is following shortcoming in existing refrigeration teaching equipment: 1. generally temperature can only be reduced to about-20 DEG C; 2. be generally merely able to the rudimentary knowledge of training Refrigeration Specialty, and two-stage multiplex refrigerating system knowledge can not be trained, the weak point that Here it is existing for prior art.
Summary of the invention
Technical problem to be solved in the utility model, is exactly for the deficiency existing for prior art, and provides a kind of super low temperature refrigeration teaching equipment, can train the knowledge of two-stage multiplex refrigerating system, and can improve refrigerating capacity.
This programme is achieved by the following technical measures: a kind of super low temperature refrigeration teaching equipment, the refrigeration system comprising evaporator and be communicated with evaporator, described evaporator is arranged in casing, described casing is connected with the first temperature sensor, described refrigeration system comprises the first refrigeration system and the second refrigeration system, circulate in described first refrigeration system the first cold-producing medium, circulate in described second refrigeration system second refrigerant, described second refrigeration system comprises the second compressor connected successively, oil separator, first outlet of described oil separator is connected with the second compressor, second outlet is connected with the second condenser, described second condenser is connected with Intermediate Heat Exchanger, described Intermediate Heat Exchanger connects the second device for drying and filtering, the first kapillary and evaporator successively, described evaporator is communicated with the second compressor, and described first refrigeration system is cooled the second refrigerant in the second refrigeration system by Intermediate Heat Exchanger.
The technical characteristic of this programme also comprises: above-mentioned first refrigeration system comprises the first compressor, the first condenser, the first device for drying and filtering, heating power expansion valve, the Intermediate Heat Exchanger that connect successively, and described Intermediate Heat Exchanger is communicated with the first compressor.
The technical characteristic of this programme also comprises: above-mentioned second condenser is connected with pressure release loop, and described pressure release loop comprises hydraulic valve, reservoir, the 3rd device for drying and filtering and the second kapillary, and described second kapillary is communicated with the second compressor.
The technical characteristic of this programme also comprises: above-mentioned Intermediate Heat Exchanger is provided with the second temperature sensor and temperature-sensitive bag in the exit of the first cold-producing medium, and described temperature-sensitive bag is connected with heating power expansion valve.
The technical characteristic of this programme also comprises: be provided with tensimeter and pressure protector in above-mentioned first refrigeration system and/or the second refrigeration system.The pressure protector arranged plays a protective role to refrigeration system.
The technical characteristic of this programme also comprises: be provided with liquid-sighting glass in above-mentioned first refrigeration system and/or the second refrigeration system.
The technical characteristic of this programme also comprises: be connected with first-hand valve between above-mentioned first device for drying and filtering and thermal expansion valve, second-hand's valve is connected with between described Intermediate Heat Exchanger and the first compressor, be connected with the 3rd hand valve and solenoid valve between described second device for drying and filtering and evaporator, between described evaporator and the second compressor, be connected with the 4th hand valve.
The technical characteristic of this programme also comprises: above-mentioned casing and refrigeration system are all arranged on platform, and described platform is connected with control display panel, and described tensimeter and/or pressure protector are neatly arranged in and control on display panel.
The technical characteristic of this programme also comprises: the bottom of above-mentioned platform is connected with universal wheel.Adopt this programme, make this ultralow temperature teaching equipment convenient mobile.
The technical characteristic of this programme also comprises: above-mentioned first cold-producing medium is R404A cold-producing medium, and described second refrigerant is R23 cold-producing medium.
The beneficial effects of the utility model can be learnt from above-mentioned technical scheme: a kind of super low temperature refrigeration teaching equipment, the refrigeration system comprising evaporator and be communicated with evaporator, described evaporator is arranged in casing, described casing is connected with the first temperature sensor, described refrigeration system comprises the first refrigeration system and the second refrigeration system, circulate in described first refrigeration system the first cold-producing medium, circulate in described second refrigeration system second refrigerant, described second refrigeration system comprises the second compressor connected successively, oil separator, first outlet of described oil separator is connected with the second compressor, second outlet is connected with the second condenser, described second condenser is connected with Intermediate Heat Exchanger, described Intermediate Heat Exchanger connects the second device for drying and filtering, the first kapillary and evaporator successively, described evaporator is communicated with the second compressor, and described first refrigeration system is cooled the second refrigerant in the second refrigeration system by Intermediate Heat Exchanger.Temperature in casing is down to lower temperature by the first refrigeration system and the second refrigeration system by this super low temperature refrigeration teaching equipment, and can train the knowledge of student's two-stage multiplex refrigerating system.
As can be seen here, the utility model compared with prior art, has substantive distinguishing features and progress, and its beneficial effect implemented also is apparent.
Accompanying drawing explanation
Fig. 1 is theory structure schematic diagram of the present utility model;
Fig. 2 is structural representation of the present utility model.
In figure: 1-first compressor, 2-tensimeter, 3-first high-pressure protector, 4-first condenser, 5-first device for drying and filtering, 6-tensimeter, the first-hand valve of 7-, 8-first liquid-sighting glass, 9-heating power expansion valve, 10-tensimeter, 11-Intermediate Heat Exchanger, 12-second-hand's valve, 13-first low pressure protector, 14-tensimeter, 15-temperature-sensitive bag, 16-second compressor, 17-tensimeter, 18-second high-pressure protector, 19-oil separator, 20-second condenser, 21-tensimeter, 22-second device for drying and filtering, 23-the 3rd hand valve, 24-solenoid valve, 25-second liquid-sighting glass, 26-first kapillary, 27-tensimeter, 28-evaporator, 29-the 4th hand valve, 30-second low pressure protector, 31-tensimeter, 32-hydraulic valve, 33-reservoir, 34-the 3rd device for drying and filtering, 35-second kapillary, 36-platform, 37-controls display panel, 38-universal wheel, 39-casing, 40-refrigeration system.
Embodiment
For the technical characterstic of this programme can be clearly demonstrated, below by embodiment, and in conjunction with its accompanying drawing, this programme is set forth.
As depicted in figs. 1 and 2, a kind of super low temperature refrigeration teaching equipment, the refrigeration system 40 comprising evaporator 28 and be communicated with evaporator 28, described evaporator 28 is arranged in casing 39, described refrigeration system 39 and casing 40 are all arranged on platform 36, and described platform 36 is fixedly connected with and controls display panel 37.
Described casing 40 is connected with the first temperature sensor (not shown), described first temperature sensor is used for showing the internal temperature of casing 40, described refrigeration system 40 comprises the first refrigeration system and the second refrigeration system, circulate in described first refrigeration system the first cold-producing medium, circulate in described second refrigeration system second refrigerant, first cold-producing medium is R404A cold-producing medium, described second refrigerant is R23 cold-producing medium, described first refrigeration system comprises the first compression connected successively, 1, first condenser 4, first device for drying and filtering 5, heating power expansion valve 9, Intermediate Heat Exchanger 11, described Intermediate Heat Exchanger 11 is communicated with the first compressor 1, described first refrigeration system is cooled the second refrigerant in the second refrigeration system by Intermediate Heat Exchanger 11.
Described second refrigeration system comprises the second compressor 16, the oil separator 19 that connect successively, and the first outlet of described oil separator 19 is connected with the second compressor 16, second export and be connected with the second condenser 20; Described second condenser 20 is connected with Intermediate Heat Exchanger 11, and described Intermediate Heat Exchanger 11 connects the second device for drying and filtering 22, first kapillary 26 and evaporator 28 successively, and described evaporator 28 is communicated with the second compressor 16.
Described second condenser 20 is connected with pressure release loop, and described pressure release loop comprises hydraulic valve 32, reservoir 33, the 3rd device for drying and filtering 34 and the second kapillary 35, and described second kapillary 35 is communicated with the second compressor 16.When the pressure from the second condenser 20 second refrigerant is out higher than 2.5Mpa, hydraulic valve 32 is opened and is entered pressure release loop, is reduced by the pressure of second refrigerant in second system.
Described Intermediate Heat Exchanger is provided with the second temperature sensor (not shown) and temperature-sensitive bag 15 in the exit of the first cold-producing medium, and described temperature-sensitive bag 15 is connected with heating power expansion valve 9.Detect temperature when the first cold-producing medium flows out from Intermediate Heat Exchanger 11 by the second temperature sensor, the size of heating power expansion valve 9 opening can be regulated simultaneously by temperature-sensitive bag 15.
Tensimeter 2 is connected with in the middle of described first compressor 1 and the first condenser 4; Tensimeter 6 is connected with between described first device for drying and filtering 5 and heating power expansion valve 9; Tensimeter 10 is connected with between described heating power expansion valve 9 and Intermediate Heat Exchanger 11; Tensimeter 14 is connected with between described Intermediate Heat Exchanger 11 and the first compressor 1; Tensimeter 17 is connected with between described second compressor 16 and oil separator 19; Tensimeter 21 is connected with in the middle of described Intermediate Heat Exchanger 11 and the second device for drying and filtering 22; Tensimeter 27 is connected with between described second device for drying and filtering 22 and evaporator 28; Tensimeter 31 is connected with between described evaporator 28 and the second compressor 16.
First-hand valve 7 and the first liquid-sighting glass 8 is connected with between described first device for drying and filtering 5 and thermal expansion valve 9, second-hand's valve 12 is connected with between described Intermediate Heat Exchanger 11 and the first compressor 1, be connected with the 3rd hand valve 23 and solenoid valve 24 and the second liquid-sighting glass 25 between described second device for drying and filtering 22 and evaporator 28, between described evaporator 28 and the second compressor 16, be connected with the 4th hand valve 29.Be provided with the form that the first liquid-sighting glass 8 and the second liquid-sighting glass 25 can be clear that the first cold-producing medium and second refrigerant in the first refrigeration system and the second refrigeration system.
The first high-pressure protector 3 is connected with between described first compressor 1 and the first condenser 4; the first low voltage protection device for electrophonic 13 is connected with between described Intermediate Heat Exchanger 11 and the first compressor 1; be connected with the second high-pressure protector 18 between described second compressor 16 and oil separator 19, between described evaporator 28 and the second compressor 16, be connected with the second low pressure protector 30.When pressure anomaly in refrigeration system; the first compressor 1 and the second compressor 16 can be made to quit work; described first high-pressure protector 3, second high-pressure protector 18, first low pressure protector 13 and the second low pressure protector 30 are connected in the control circuit of the first compressor 1 and the second compressor 16; the control circuit of the first compressor 1 and the second compressor 16 is prior art, does not repeat them here.
Described tensimeter is neatly arranged in and controls on display panel; Described first high-pressure protector 3, second high-pressure protector 18, first low pressure protector 13 and the second low pressure protector 30 are neatly arranged in and control on display panel 37.By tensimeter proper alignment on control display panel 37, student can be made clearly to see each manometric registration clearly.
The principle of work of this super low temperature refrigeration teaching equipment is as follows: equipment power-on, when casing 39 internal temperature is than the temperature height set, first first order compressor 1 is started, first order refrigeration system is started working, the second refrigerant temperature of second level refrigeration system circulation is declined, after the time delay of a few minutes, start the second compressor 16 and work, by evaporator 28, casing 39 internal temperature is declined.
After box interior temperature reaches design temperature, the first refrigeration system and the second refrigeration system all quit work; When box interior temperature raises again, when exceeding the temperature of setting, equipment repeats above-mentioned operation again, thus makes the temperature inside the box remain at the temperature of setting.
Can pass through without the technical characteristic described in the utility model or adopt existing techniques in realizing; do not repeat them here; certainly; above-mentioned explanation is not to restriction of the present utility model; the utility model is also not limited in above-mentioned embodiment; the change that those of ordinary skill in the art makes in essential scope of the present utility model, remodeling, interpolation or replacement, also should belong to protection domain of the present utility model.
Claims (10)
1. a super low temperature refrigeration teaching equipment, the refrigeration system comprising evaporator and be communicated with evaporator, described evaporator is arranged in casing, it is characterized in that: described casing is connected with the first temperature sensor, described refrigeration system comprises the first refrigeration system and the second refrigeration system, circulate in described first refrigeration system the first cold-producing medium, circulate in described second refrigeration system second refrigerant, described second refrigeration system comprises the second compressor connected successively, oil separator, first outlet of described oil separator is connected with the second compressor, second outlet is connected with the second condenser, described second condenser is connected with Intermediate Heat Exchanger, described Intermediate Heat Exchanger connects the second device for drying and filtering, the first kapillary and evaporator successively, described evaporator is communicated with the second compressor, and described first refrigeration system is cooled the second refrigerant in the second refrigeration system by Intermediate Heat Exchanger.
2. super low temperature refrigeration teaching equipment according to claim 1, it is characterized in that: described first refrigeration system comprises the first compressor, the first condenser, the first device for drying and filtering, heating power expansion valve, the Intermediate Heat Exchanger that connect successively, and described Intermediate Heat Exchanger is communicated with the first compressor.
3. super low temperature refrigeration teaching equipment according to claim 2, it is characterized in that: described second condenser is connected with pressure release loop, described pressure release loop comprises hydraulic valve, reservoir, the 3rd device for drying and filtering and the second kapillary, and described second kapillary is communicated with the second compressor.
4. the super low temperature refrigeration teaching equipment according to claim 1 or 2 or 3, is characterized in that: described Intermediate Heat Exchanger is provided with the second temperature sensor and temperature-sensitive bag in the exit of the first cold-producing medium, and described temperature-sensitive bag is connected with heating power expansion valve.
5. super low temperature refrigeration teaching equipment according to claim 3, is characterized in that: be provided with tensimeter and pressure protector in described first refrigeration system and/or the second refrigeration system.
6. super low temperature refrigeration teaching equipment according to claim 3, is characterized in that: be provided with liquid-sighting glass in described first refrigeration system and/or the second refrigeration system.
7. super low temperature refrigeration teaching equipment according to claim 3, it is characterized in that: between described first device for drying and filtering and thermal expansion valve, be connected with first-hand valve, second-hand's valve is connected with between described Intermediate Heat Exchanger and the first compressor, be connected with the 3rd hand valve and solenoid valve between described second device for drying and filtering and evaporator, between described evaporator and the second compressor, be connected with the 4th hand valve.
8. the super low temperature refrigeration teaching equipment according to claim 5 or 6 or 7; it is characterized in that: described casing and refrigeration system are all arranged on platform; described platform is connected with control display panel, and described tensimeter and/or pressure protector are neatly arranged in and control on display panel.
9. super low temperature refrigeration teaching equipment according to claim 8, is characterized in that: the bottom of described platform is connected with universal wheel.
10. the super low temperature refrigeration teaching equipment according to claim 1 or 2 or 3, is characterized in that: described first cold-producing medium is R404A cold-producing medium, and described second refrigerant is R23 cold-producing medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520075233.8U CN204406881U (en) | 2015-02-03 | 2015-02-03 | A kind of super low temperature refrigeration teaching equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520075233.8U CN204406881U (en) | 2015-02-03 | 2015-02-03 | A kind of super low temperature refrigeration teaching equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204406881U true CN204406881U (en) | 2015-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520075233.8U Active CN204406881U (en) | 2015-02-03 | 2015-02-03 | A kind of super low temperature refrigeration teaching equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204406881U (en) |
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2015
- 2015-02-03 CN CN201520075233.8U patent/CN204406881U/en active Active
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