CN203648564U - Thermostatic bath system - Google Patents
Thermostatic bath system Download PDFInfo
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- CN203648564U CN203648564U CN201320888411.XU CN201320888411U CN203648564U CN 203648564 U CN203648564 U CN 203648564U CN 201320888411 U CN201320888411 U CN 201320888411U CN 203648564 U CN203648564 U CN 203648564U
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Abstract
The utility model discloses a thermostatic bath system and provides a system capable of stably operating. The thermostatic bath system comprises a compressor, an oil separator, a condenser, a liquid reservoir, a vortex tube, a thermostatic bath, a cooling heat exchanger, a warming heat exchanger, a mixing chamber and a thermostatic control system, wherein the cooling heat exchanger and the warming heat exchanger are arranged in the thermostatic bath; a refrigerant outlet of the oil separator is connected with a hot air bypass branch; a hot fluid outlet of the vortex tube is connected with an inlet of the warming heat exchanger through a fifth adjusting valve; a cold fluid outlet of the vortex tube is connected with an inlet of the cooling heat exchanger through a third adjusting valve; a first liquid refrigerant outlet of the liquid reservoir is connected with a liquid refrigerant bypass branch; the hot air bypass branch is connected in parallel with the liquid refrigerant bypass branch, then is connected in parallel with a liquid refrigerant branch and a mixed fluid outlet of the mixing chamber, and then is connected with an air suction port of the compressor. The system is stable to operate, high in reliability and long in service life.
Description
Technical field
The utility model relates to a kind of thermostatic equipment, in particular, relates to a kind of thermostatic bath system that can meet high low temperature steady temperature requirement.
Background technology
Thermostat is that a kind of being applicable to need to maintain the experimental facilities of working under constant temperature, is the necessary equipment in the laboratories such as medical and health, chemical industry, food industry, metallurgical industry, universities and colleges, scientific research, genetic engineering, macromolecule engineering.
At present, the intensification of thermostat realizes by electric heating system, and the cooling of thermostat realizes by refrigeration system.The work of refrigeration system and electric heating system automatically adjusts by temperature controller, and in the time that the temperature of thermostat exceedes preset temperature, refrigeration system is started working, and temperature reduces; When temperature is lower than preset temperature, electric heating system is started working, and heater is started working, temperature rise.In the constant process of holding temperature, because the load of compressor is less, the cold-producing medium evaporation capacity of refrigeration system is less, suction pressure of compressor is lower, and delivery temperature is higher, easily causes high frequent start and stop, refrigeration system refrigeration is discontinuous, has affected job stability and the reliability of thermostat.Meanwhile, the frequency of switching between refrigeration system and electric heating system is more frequent, causes motor overheating, has seriously shortened the service life of equipment.
Utility model content
The purpose of this utility model is for the technological deficiency existing in prior art, and provide a kind of can stability the thermostatic bath system of operation.
For realizing the technical scheme that the purpose of this utility model adopts be:
A kind of thermostatic bath system, comprises compressor, oil eliminator, condenser, reservoir, vortex tube, thermostat, cooling heat exchanger, temperature rise heat exchanger, hybrid chamber and thermostatic control system, described cooling heat exchanger and temperature rise heat exchanger are installed in described thermostat, the exhaust outlet of described compressor is connected with the import of described oil eliminator, refrigerant outlet one tunnel of described oil eliminator is connected with the hot-gas bypass branch road being made up of the first magnetic valve and hot gas bypass valve, first control valve of separately leading up to is connected with described condenser inlet, Zai Yi road is connected with the second control valve and the 3rd magnetic valve, the outlet of described condenser is connected with described reservoir import, the gaseous refrigerant outlet of described reservoir is connected with the 4th magnetic valve, described the 3rd magnetic valve is connected with the import of described vortex tube with after the 4th magnetic valve parallel connection, the hot fluid outlet of described vortex tube is connected with described the 5th control valve and the 6th control valve import respectively, described the 5th outlet of control valve and the import of described temperature rise heat exchanger are connected, after the outlet parallel connection of the outlet of described temperature rise heat exchanger and described the 6th control valve, be connected with the import of described hybrid chamber hot fluid, the cold fluid outlet of described vortex tube is connected with the import of the 3rd control valve and the 4th control valve respectively, the outlet of described the 3rd control valve is connected with the import of described cooling heat exchanger, after the outlet parallel connection of the outlet of described cooling heat exchanger and described the 4th control valve, is connected with the cold fluid import of described hybrid chamber, the first liquid refrigerant outlet of described reservoir is connected with the liquid refrigerant bypass branch road being made up of described the second magnetic valve and hydrojet expansion valve, the second liquid refrigerant outlet of described reservoir with by the 5th magnetic valve, electric expansion valve is connected with the liquid refrigerant branch road of the 7th magnetic valve composition, the 6th magnetic valve is installed between the import of the outlet of described electric expansion valve and described the 3rd control valve, described hot-gas bypass branch road is connected with the air entry of described compressor after exporting parallel connection with the fluid-mixing of described liquid refrigerant branch road and hybrid chamber again with after described liquid refrigerant bypass branch circuit parallel connection.
Described thermostatic control system comprises radiator valve and is installed on the medium temperature sensor on described thermostat sidewall, be installed on the suction temperature sensor on described compressor air suction pipeline, the signal output part of described medium temperature sensor and suction temperature sensor is connected with the temperature signal output of described radiator valve respectively, the control signal output of described radiator valve respectively with described compressor, the first magnetic valve, the second magnetic valve, the 3rd magnetic valve, the 4th magnetic valve, the 5th magnetic valve, electric expansion valve, the 6th magnetic valve, the 7th magnetic valve, the first control valve, the second control valve, the 3rd control valve, the 4th control valve, the 5th control valve, the 6th control valve connects, described hot gas bypass valve is controlled hot-gas bypass amount automatically by the conduit being connected on described compressor air suction pipeline, described hydrojet expansion valve is controlled open degree automatically by the temperature-sensitive bag being installed on described compressor air suction pipeline.
The cold fluid import department of described hybrid chamber is provided with the first check valve, the hot fluid import department of described hybrid chamber is provided with the second check valve, the cold fluid exit of described vortex tube is provided with the 3rd check valve, and the hot fluid exit of described vortex tube is provided with the 4th check valve.
Between described oil eliminator and described compressor, oil level controllers is installed.
Compared with prior art, the beneficial effects of the utility model are:
1, thermostatic bath system of the present utility model utilizes the combination of refrigeration system and vortex tube, both can realize the temperature-rise period of thermostat, also can realize the temperature-fall period of thermostat, thereby the steady temperature that maintains thermostat, has realized continuous operation, avoid the frequent switching of compressor, stability and the reliability of system operation are improved, meanwhile, avoided switching the compressor motor overheating causing, the service life of having improved equipment due to frequent.
2, thermostatic bath system of the present utility model has increased hot-gas bypass branch road after oil eliminator, increased the liquid refrigerant bypass branch road being formed by the second magnetic valve and hydrojet expansion valve at reservoir place, article two, after bypass branch circuit parallel connection, be connected with compressor air suction mouth, thereby after being mixed with the cryogenic high pressure refrigerant liquid in reservoir, the high-temperature high-pressure refrigerant gas after oil eliminator introduces suction line, for system provides a dummy load, assurance compressor is being worked within the scope of normal Suck and exhaust pressure, avoid thermostatic bath system frequent start-stop under some operating mode, the operation stability of Hoisting System and reliability, improve the service life of equipment.
3, thermostatic bath system of the present utility model is provided with liquid refrigerant branch road in reservoir bottom, can guarantee that by electric expansion valve compressor air suction temperature, in reasonable working range, has improved system reliability of operation.
Accompanying drawing explanation
Figure 1 shows that the schematic diagram of the utility model thermostatic bath system.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
The schematic diagram of the utility model thermostatic bath system as shown in Figure 1, comprises compressor 1, oil eliminator 2, condenser 6, reservoir 10, vortex tube 20, thermostat 25, cooling heat exchanger 21, temperature rise heat exchanger 22, hybrid chamber 26 and thermostatic control system, described cooling heat exchanger 21 and temperature rise heat exchanger 22 are installed in described thermostat 25, the exhaust outlet of described compressor 1 is connected with the import of described oil eliminator 2, refrigerant outlet one tunnel of described oil eliminator 2 is connected with the hot-gas bypass branch road being made up of the first magnetic valve 4 and hot gas bypass valve 7, first control valve 5 of separately leading up to is connected with described condenser 6 imports, Zai Yi road is connected with the second control valve 11 and the 3rd magnetic valve 12, the outlet of described condenser 6 is connected with described reservoir 10 imports, the gaseous refrigerant outlet of described reservoir 10 is connected with the 4th magnetic valve 13, after described the 3rd magnetic valve 12 is in parallel with the 4th magnetic valve 13, be connected with the import of described vortex tube 20, the hot fluid outlet of described vortex tube 20 is connected with described the 5th control valve 23 and the 6th control valve 24 imports respectively, the outlet of described the 5th control valve 23 is connected with the import of described temperature rise heat exchanger 22, after the outlet parallel connection of the outlet of described temperature rise heat exchanger 22 and described the 6th control valve 24, be connected with described hybrid chamber 26 hot fluid imports, the cold fluid outlet of described vortex tube 20 is connected with the import of the 3rd control valve 17 and the 4th control valve 19 respectively, the outlet of described the 3rd control valve 17 is connected with the import of described cooling heat exchanger 21, after the outlet parallel connection of the outlet of described cooling heat exchanger 21 and described the 4th control valve 19, is connected with the cold fluid import of described hybrid chamber 26, the first liquid refrigerant outlet of described reservoir 10 is connected with the liquid refrigerant bypass branch road being made up of described the second magnetic valve 9 and hydrojet expansion valve 8, the second liquid refrigerant outlet of described reservoir 10 with by the 5th magnetic valve 14, electric expansion valve 15 is connected with the liquid refrigerant branch road that the 7th magnetic valve 18 forms, the 6th magnetic valve 16 is installed between the import of the outlet of described electric expansion valve 15 and described the 3rd control valve 17, described hot-gas bypass branch road is connected with the air entry of described compressor 1 after exporting parallel connection with the fluid-mixing of described liquid refrigerant branch road and hybrid chamber 26 again with after described liquid refrigerant bypass branch circuit parallel connection.Between described oil eliminator 2 and described compressor 1, oil level controllers 3 is installed.
Described thermostatic control system in the present embodiment comprises radiator valve and is installed on the medium temperature sensor on described thermostat sidewall, be installed on the suction temperature sensor on described compressor air suction pipeline, the signal output part of described medium temperature sensor and suction temperature sensor is connected with the temperature signal output of described radiator valve respectively, the control signal output of described radiator valve respectively with described compressor 1, the first magnetic valve 4, the second magnetic valve 9, the 3rd magnetic valve 12, the 4th magnetic valve 13, the 5th magnetic valve 14, electric expansion valve 15, the 6th magnetic valve 16, the 7th magnetic valve 18, the first control valve 5, the second control valve 11, the 3rd control valve 17, the 4th control valve 19, the 5th control valve 23, the 6th control valve 24 connects, described hot gas bypass valve 7 is controlled hot-gas bypass amount automatically by the conduit being connected on described compressor air suction pipeline, described hydrojet expansion valve 8 is controlled open degree automatically by the temperature-sensitive bag being installed on described compressor air suction pipeline.
Flow in order to ensure the reliable of fluid, the cold fluid import department of described hybrid chamber 26 is provided with the first check valve 27, the hot fluid import department of described hybrid chamber 26 is provided with the second check valve 28, the cold fluid exit of described vortex tube 20 is provided with the 3rd check valve 29, and the hot fluid exit of described vortex tube 20 is provided with the 4th check valve 30.
The workflow of the present embodiment heat pump under low temperature, two kinds of operating modes of high temperature is below provided.
Worst cold case comprises two processes: by working media fast cooling, to temperature required scope, and then accurate adjustment is to design temperature, and maintains this temperature constant.
Worst cold case system flow is: setting after required operating temperature, startup system, described the first magnetic valve 4, the second magnetic valve 9, the 3rd magnetic valve 12, the 4th magnetic valve 13, the 7th magnetic valve 18 are closed, and described the 5th magnetic valve 14, the 6th magnetic valve 16 are opened; After described compressor 1 starts, the refrigerant vapour of HTHP by oil eliminator 2 by lubricating oil separation out, through described the first control valve 5, arrives condenser 6, high-temperature high-pressure refrigerant steam becomes saturated liquid refrigerant through cooling phase-change in condenser 6, enters described reservoir 10; In described reservoir 10, liquid refrigerant, through after described the 5th magnetic valve 14, electric expansion valve 15, the 6th magnetic valve 16, the 3rd control valve 17, enters cooling heat exchanger 21, and evaporation endothermic therein regulates its evaporating temperature by described electric expansion valve 15; The steam that evaporation produces, after the first check valve 27, hybrid chamber 26, enters compressor air suction pipeline, completes fast cooling process.Through after fast cooling, described thermostat 25 medium temperature values and set temperature value deviation are little, at this moment need to make described thermostat 25 medium temperature reach setting value by accurate adjustment.Now, described the 3rd magnetic valve 12, the 5th magnetic valve 14, the 6th magnetic valve 16, the 7th magnetic valve 18 are closed, described the first magnetic valve 4, the second magnetic valve 9, the 4th magnetic valve 13 are opened, after described compressor 1 starts, the refrigerant vapour of HTHP by oil eliminator 2 by lubricating oil separation out, part steam, by the first control valve 5, enters condenser 6, is condensed into liquid-vapor mixture and enters described reservoir 10 afterwards in condenser 6, the saturated gaseous refrigerant of high pressure on described reservoir 10 tops, enter described vortex tube 20 through described the 4th magnetic valve, in described vortex tube 20, be separated into cold and hot two parts fluid, cold and hot fluid is respectively by after described the 3rd check valve 29, the 4th check valve 30, automatically regulate cold fluid to pass through the cold fluid flow of described the 3rd control valve, the 4th control valve and hot fluid by the cold fluid flow of described the 5th control valve, the 6th control valve according to the signal of control system now, reach the medium temperature in the described thermostat 25 of accurate control with this, subsequently, the cold fluid and hot fluid after heat exchange, respectively by after the first check valve 27, the second check valve 28, after mixing, enters compressor air suction pipeline in described hybrid chamber 26, owing to maintaining in described thermostat in temperature constant process, load less, consider that compressor can produce a series of adverse consequences under the too low operating mode of pressure of inspiration(Pi), therefore, in the utility model, adopt the exhaust of compressor another part HTHP is connected with hot gas bypass valve 7 through described the first magnetic valve 4, and with come from reservoir, by the second magnetic valve 9, after the liquid refrigerant of hydrojet expansion valve 8 mixes, enter compressor air suction pipeline, for system provides " dummy load ", make the described compressor 1 can be at normal suction pressure, continuous operation in temperature range, avoid system less owing to loading in accurate temperature controlling process, cause system frequent start-stop, affect the Stability and dependability of system works.
Worst hot case comprises two processes: by the working media temperature required scope that is rapidly heated, and then accurate adjustment is to design temperature, and maintains this temperature constant.
Worst hot case system flow is: setting after required operating temperature, startup system, described the first magnetic valve 4, the second magnetic valve 9, the 4th magnetic valve 13, the 6th magnetic valve 16 are closed, and described the 3rd magnetic valve 12, the 5th magnetic valve 14, the 7th magnetic valve 18 are opened; After described compressor 1 starts, the refrigerant vapour of HTHP by oil eliminator 2 by lubricating oil separation out, part high-temperature high-pressure refrigerant steam is through described the first control valve 5, arrive condenser 6, in condenser 6, become saturated liquid refrigerant through cooling phase-change, enter described reservoir 10; Another part high-temperature high-pressure refrigerant steam is through described the second control valve 11, after the 3rd magnetic valve 12, arrive the import of described vortex tube 20, hot and cold air separate after, cold airflow after the 3rd check valve 29, by the 4th control valve by bypass, thermal current is by after the 4th check valve 30, through the 5th control valve, enter temperature rise heat exchanger 22, the medium in described thermostat 25 is rapidly heated; Passed through respectively described the first check valve 27, the second check valve 28 by the cold airflow of bypass and the described temperature rise heat exchanger 22 of process, in described hybrid chamber 26, mix, enter compressor air suction pipeline, for preventing suction superheat, from described reservoir 10, Yin Yi road liquid refrigerant, by described the 5th magnetic valve 14, electric expansion valve 15, the 7th magnetic valve 18, enter compressor air suction pipeline, guarantee the Stability and dependability of system running; Through after being rapidly heated, described thermostat 25 medium temperature values and set temperature value deviation are little, at this moment need to make described thermostat 25 medium temperature reach setting value by accurate adjustment.Now, the embodiment of system can be with reference to worst cold case.
The utility model thermostatic bath system has been given full play to vortex tube refrigeration and refrigeration system feature separately, the temperature control of whole thermostat all completes by same set of refrigeration system, also solved thermostat simultaneously in the time that load is lower, the frequent start and stop of system, the drawback that easily causes system unit to damage, stability and the reliability of system operation are improved, the service life of having improved equipment.
The above is only preferred embodiment of the present utility model; it should be noted that; for those skilled in the art; do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (4)
1. a thermostatic bath system, it is characterized in that, comprise compressor (1), oil eliminator (2), condenser (6), reservoir (10), vortex tube (20), thermostat (25), cooling heat exchanger (21), temperature rise heat exchanger (22), hybrid chamber (26) and thermostatic control system, described cooling heat exchanger (21) and temperature rise heat exchanger (22) are installed in described thermostat (25), the exhaust outlet of described compressor (1) is connected with the import of described oil eliminator (2), refrigerant outlet one tunnel of described oil eliminator (2) is connected with the hot-gas bypass branch road being made up of the first magnetic valve (4) and hot gas bypass valve (7), the first control valve (5) of separately leading up to is connected with described condenser (6) import, Zai Yi road is connected with the second control valve (11) and the 3rd magnetic valve (12), the outlet of described condenser (6) is connected with described reservoir (10) import, the gaseous refrigerant outlet of described reservoir (10) is connected with the 4th magnetic valve (13), after described the 3rd magnetic valve (12) is in parallel with the 4th magnetic valve (13), be connected with the import of described vortex tube (20), the hot fluid outlet of described vortex tube (20) is connected with described the 5th control valve (23) and the 6th control valve (24) import respectively, the outlet of described the 5th control valve (23) is connected with the import of described temperature rise heat exchanger (22), after the outlet parallel connection of the outlet of described temperature rise heat exchanger (22) and described the 6th control valve (24), be connected with described hybrid chamber (26) hot fluid import, the cold fluid outlet of described vortex tube (20) is connected with the import of the 3rd control valve (17) and the 4th control valve (19) respectively, the outlet of described the 3rd control valve (17) is connected with the import of described cooling heat exchanger (21), after the outlet parallel connection of the outlet of described cooling heat exchanger (21) and described the 4th control valve (19), is connected with the cold fluid import of described hybrid chamber (26), the first liquid refrigerant outlet of described reservoir (10) is connected with the liquid refrigerant bypass branch road being made up of described the second magnetic valve (9) and hydrojet expansion valve (8), the second liquid refrigerant outlet of described reservoir (10) with by the 5th magnetic valve (14), electric expansion valve (15) is connected with the liquid refrigerant branch road of the 7th magnetic valve (18) composition, the 6th magnetic valve (16) is installed between the import of the outlet of described electric expansion valve (15) and described the 3rd control valve (17), described hot-gas bypass branch road is connected with the air entry of described compressor (1) after exporting parallel connection with the fluid-mixing of described liquid refrigerant branch road and hybrid chamber (26) again with after described liquid refrigerant bypass branch circuit parallel connection.
2. thermostatic bath system according to claim 1, it is characterized in that, described thermostatic control system comprises radiator valve and is installed on the medium temperature sensor on described thermostat sidewall, be installed on the suction temperature sensor on described compressor air suction pipeline, the signal output part of described medium temperature sensor and suction temperature sensor is connected with the temperature signal output of described radiator valve respectively, the control signal output of described radiator valve respectively with described compressor (1), the first magnetic valve (4), the second magnetic valve (9), the 3rd magnetic valve (12), the 4th magnetic valve (13), the 5th magnetic valve (14), electric expansion valve (15), the 6th magnetic valve (16), the 7th magnetic valve (18), the first control valve (5), the second control valve (11), the 3rd control valve (17), the 4th control valve (19), the 5th control valve (23), the 6th control valve (24) connects, described hot gas bypass valve (7) is controlled hot-gas bypass amount automatically by the conduit being connected on described compressor air suction pipeline, described hydrojet expansion valve (8) is controlled open degree automatically by the temperature-sensitive bag being installed on described compressor air suction pipeline.
3. thermostatic bath system according to claim 2, it is characterized in that, the cold fluid import department of described hybrid chamber (26) is provided with the first check valve (27), the hot fluid import department of described hybrid chamber (26) is provided with the second check valve (28), the cold fluid exit of described vortex tube 20 is provided with the 3rd check valve (29), and the hot fluid exit of described vortex tube (20) is provided with the 4th check valve (30).
4. thermostatic bath system according to claim 3, is characterized in that, between described oil eliminator (2) and described compressor (1), oil level controllers (3) is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320888411.XU CN203648564U (en) | 2013-12-27 | 2013-12-27 | Thermostatic bath system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320888411.XU CN203648564U (en) | 2013-12-27 | 2013-12-27 | Thermostatic bath system |
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| Publication Number | Publication Date |
|---|---|
| CN203648564U true CN203648564U (en) | 2014-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320888411.XU Withdrawn - After Issue CN203648564U (en) | 2013-12-27 | 2013-12-27 | Thermostatic bath system |
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| Country | Link |
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| CN (1) | CN203648564U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103706416A (en) * | 2013-12-27 | 2014-04-09 | 天津商业大学 | Thermostatic bath system |
| CN108252009A (en) * | 2016-12-29 | 2018-07-06 | 温必新 | The built-in dual-purpose type heat exchanger of overflow dyeing machine |
-
2013
- 2013-12-27 CN CN201320888411.XU patent/CN203648564U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103706416A (en) * | 2013-12-27 | 2014-04-09 | 天津商业大学 | Thermostatic bath system |
| CN108252009A (en) * | 2016-12-29 | 2018-07-06 | 温必新 | The built-in dual-purpose type heat exchanger of overflow dyeing machine |
| CN108252009B (en) * | 2016-12-29 | 2021-07-23 | 温必新 | Built-in dual-purpose heat exchanger of dyeing machine |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140618 Effective date of abandoning: 20150325 |
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| RGAV | Abandon patent right to avoid regrant |