CN202304167U - Control system for vehicle cooling device - Google Patents
Control system for vehicle cooling device Download PDFInfo
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- CN202304167U CN202304167U CN2011203723108U CN201120372310U CN202304167U CN 202304167 U CN202304167 U CN 202304167U CN 2011203723108 U CN2011203723108 U CN 2011203723108U CN 201120372310 U CN201120372310 U CN 201120372310U CN 202304167 U CN202304167 U CN 202304167U
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Abstract
The utility model relates to a control system for a vehicle cooling device. The control system comprises a generator, a condenser, an evaporator, an absorber, a concentrated solution pump, a dilute solution pump, a processor, a memory, a driving circuit, a generator liquid level sensor (S4) and an absorber liquid level sensor (S7), wherein the concentrated solution pump and the dilute solution pump are variable speed pumps. When the generator liquid level value (d4) exceeds the generator liquid level referential value (D4), the processor controls the driving circuit to adjust the rotating speed of the dilute solution pump, so as to adjust the dilute solution flow entering into the generator from the absorber. When the absorber liquid level value (d7) exceeds the absorber liquid level referential value (D7), the processor controls the driving circuit to adjust the rotating speed of the concentrated solution pump, so as to adjust the concentrated solution flow entering into the absorber from the generator. In this way, the liquid level balance in cooling cycle can be controlled, cooling effect is improved, and cooling efficiency is increased.
Description
[technical field]
The utility model relates to a kind of vehicle-mounted refrigeration plant, more particularly, relates to a kind of control system of vehicle-mounted refrigeration plant.
[background technology]
In the prior art, utilize the technology of thermal refrigerating that two kinds of implementations are arranged usually: absorption and absorption type.For vehicle-mounted refrigeration plant, be installed in the confined space of car body absorption the dispersion more easily, thereby be more suitable for vehicle-mounted.
Absorption refrigeration equipment generally includes generator, condenser, evaporimeter and absorber; The generator internal pressure is lower; Generator utilizes the thermal source heated solution to form refrigerant vapour and concentrated solution, and wherein refrigerant vapour forms water as refrigerant after getting into condenser condenses, sprays in the evaporimeter again; Because the evaporimeter internal pressure is lower, water as refrigerant evaporates behind absorbing environmental air heat and forms cryogenic coolant steam, and surrounding air is lowered the temperature; Cryogenic coolant steam gets into absorber, and the concentrated solution that the evaporation back forms in the generator is pumped into by concentrated solution and absorbs the back with the cryogenic coolant vapor mixing in the absorber and form weak solution, carries out circularly cooling next time by weak solution pumped back generator again.
When the heat supply amount was excessive, the rapid speed that reacts in the generator produced a large amount of refrigerant vapours, and the amount of the weak solution that produces after the condensation of feasible process, evaporation, the absorption increases; And the power of weak solution pump can not change, and it is constant that absorber is sent into the weak solution amount of generator, causes weak solution liquid level rising in the absorber; And then make the amount of the interior concentrated solution of generator reduce gradually; Solution in the whole kind of refrigeration cycle is collected in the absorber, and the solution amount of actual participation kind of refrigeration cycle tails off, and has influence on refrigeration, the big poorer problem of refrigeration on the contrary of the thermal source heat that causes whole kind of refrigeration cycle to consume.
When the heat supply amount was too small, the speed that reacts in the generator was slower, and the refrigerant vapour of generation is less, and the amount of the weak solution that produces after the condensation of feasible process, evaporation, the absorption reduces, and directly has influence on refrigeration; The quantitative change of the cryogenic coolant steam that flow in the absorber this moment is few and to send into the weak solution amount of generator constant; Cause weak solution liquid level reduction in the absorber; Solution in the whole kind of refrigeration cycle is collected in the generator; Make the solution amount of actual participation kind of refrigeration cycle tail off equally, have influence on refrigeration.
Existing absorption refrigeration equipment adopts diesel engine or electric heater directly as the thermal source of generator usually; Steadily there is not fluctuation in its heat supply; Thereby concentrated solution and weak solution in generator and the absorber be easy to reach poised state, can obtain best refrigerating efficiency, the minimizing energy resource consumption.But vehicle-mounted refrigeration plant utilizes the heat of engine cooling water and tail gas as the generator thermal source usually, and this thermal source quality is not high and fluctuation is bigger, badly influences refrigerating efficiency and refrigeration.This also is that restriction utilizes engine exhaust heat to be applied to a vehicle-mounted technical bottleneck as the thermal source of absorption refrigeration equipment.
[utility model content]
The technical problem underlying that the utility model will solve is; Not high and fluctuation is big and have influence on the problem of refrigerating efficiency and refrigeration to there being the thermal source quality in the vehicle-mounted refrigeration plant that utilizes engine exhaust heat as thermal source in the prior art; A kind of control system of vehicle-mounted refrigeration plant is provided; Can adapt to adjusting automatically to whole refrigeration plant according to what of thermal source quantity of heat given up, to obtain better refrigerating efficiency and refrigeration.
The utility model solves this technical problem the technical scheme that is adopted: the control system that constructs a kind of vehicle-mounted refrigeration plant; Comprise generator, condenser, evaporimeter and absorber; Be provided with concentrated solution pump and weak solution pump between said generator and the absorber; Also comprise processor, store the drive circuit of memory, the said concentrated solution pump of driving and the weak solution pump work of generator liquid level a reference value and absorber liquid level a reference value, the generator liquid level sensor of the interior generator level value of the said generator of detection, the absorber liquid level sensor of the interior absorber level value of the said absorber of detection; Said concentrated solution pump and weak solution pump are speed-variable pump; Said processor is controlled the rotating speed that said drive circuit is adjusted said weak solution pump when said generator level value exceeds generator liquid level a reference value scope, to regulate the flow that gets into weak solution in the generator from absorber; Said processor is controlled the rotating speed that said drive circuit is adjusted said concentrated solution pump when said absorber level value exceeds absorber liquid level a reference value scope, to regulate the flow that gets into concentrated solution in the absorber from generator.
In the control system of the said vehicle-mounted refrigeration plant of the utility model; Said generator liquid level a reference value comprises generator liquid level higher limit and generator liquid level lower limit; When said generator level value during greater than generator liquid level higher limit, said processor is controlled the slow down rotating speed of said weak solution pump of said drive circuit; When said generator level value during less than generator liquid level lower limit, said processor is controlled the rotating speed that said drive circuit is accelerated said weak solution pump.
In the control system of the said vehicle-mounted refrigeration plant of the utility model; Said absorber liquid level a reference value comprises absorber liquid level higher limit and absorber liquid level lower limit; When said absorber level value during greater than absorber liquid level higher limit, said processor is controlled the slow down rotating speed of said concentrated solution pump of said drive circuit; When said absorber level value during less than absorber liquid level lower limit, said processor is controlled the rotating speed that said drive circuit is accelerated said concentrated solution pump.
In the control system of the said vehicle-mounted refrigeration plant of the utility model, also comprise the condenser temperature sensor that detects said condenser inner condenser temperature value; Also store condenser temperature higher limit and condenser temperature lower limit in the said memory; Be provided with radiator fan in the said condenser by said driving circuit drives; When condenser temperature value during greater than the condenser temperature higher limit, processor is controlled the rotating speed of the said radiator fan of said driving circuit drives and is accelerated with the rising of condenser temperature value; When condenser temperature value during less than the condenser temperature lower limit, the rotating speed that processor is controlled the said radiator fan of said driving circuit drives slows down with the reduction of condenser temperature value.
In the control system of the said vehicle-mounted refrigeration plant of the utility model, also comprise the condenser pressure sensor that detects said condenser inner condenser force value; Also store condenser pressure higher limit and condenser pressure lower limit in the said memory; When condenser pressure value during greater than the condenser pressure higher limit, the rotating speed that processor is controlled the said radiator fan of said driving circuit drives increases with the rising of condenser pressure value; When condenser pressure value during less than the condenser pressure lower limit, the rotating speed that processor is controlled the said radiator fan of said driving circuit drives reduces with the reduction of condenser pressure value.
In the control system of the said vehicle-mounted refrigeration plant of the utility model, also comprise the evaporator temperature sensor that detects evaporator temperature value in the said absorber; Also store evaporator temperature higher limit and evaporator temperature lower limit in the said memory; Also be provided with between said evaporimeter and the condenser water as refrigerant is pumped into the cryogenic fluid pump in the evaporimeter, said cryogenic fluid pump is a speed-variable pump and by said driving circuit drives; When evaporator temperature value during greater than the evaporator temperature higher limit, the rotating speed that processor is controlled the said cryogenic fluid pump of said driving circuit drives slows down with the rising of evaporator temperature value; When evaporator temperature value during less than the evaporator temperature lower limit, processor is controlled the rotating speed of the said cryogenic fluid pump of said driving circuit drives and is accelerated with the reduction of evaporator temperature value.
In the control system of the said vehicle-mounted refrigeration plant of the utility model, also comprise the evaporator pressure sensor that detects value of evaporator pressure in the said absorber; Also store evaporator pressure higher limit and evaporator pressure lower limit in the said memory; When value of evaporator pressure during greater than the evaporator pressure higher limit, the rotating speed that processor is controlled the said cryogenic fluid pump of said driving circuit drives slows down with the rising of value of evaporator pressure; When value of evaporator pressure during less than the evaporator pressure lower limit, processor is controlled the rotating speed of the said cryogenic fluid pump of said driving circuit drives and is accelerated with the reduction of value of evaporator pressure.
Implement the control system of the said vehicle-mounted refrigeration plant of the utility model, have following beneficial effect: detect the concentrated solution liquid level in the generator, i.e. generator level value in real time through the generator liquid level sensor is set; The absorber liquid level sensor is set detects the weak solution liquid level in the absorber, i.e. absorber level value in real time; Through processor generator level value and generator liquid level a reference value are compared again; When the generator level value exceeds generator liquid level a reference value scope; Explain that concentrated solution is very few or too much in the generator; Accelerate through drive circuit again or the rotating speed of the weak solution pump that slows down, adjust the amount that imports weak solution in the generator in the absorber, make concentrated solution and the amount balance of weak solution in the whole kind of refrigeration cycle; Simultaneously; When the absorber level value exceeds absorber liquid level a reference value scope; Explain that weak solution is very few or too much in the absorber; Accelerate or the rotating speed of the concentrated solution pump that slows down through drive circuit, adjust and import two of concentrated solution in the absorber in the generator, make concentrated solution and the amount balance of weak solution in the whole kind of refrigeration cycle.Thus, can through the rotating speed of control concentrated solution pump and weak solution pump dense, weak solution amount in the kind of refrigeration cycle dynamically be adjusted through monitoring liquid level of solution value in generator and the absorber in real time, to improve refrigerating efficiency, to improve refrigeration.Simultaneously because, The whole control system adopts automatically controlled mode, has dwindled the volume of control system, more is applicable to vehicle-mounted.
In addition, refrigerant vapour is condensed into the process of water as refrigerant in condenser relevant with condenser internal pressure and temperature: bigger when the condenser internal pressure, temperature is high more, then refrigerant vapour need discharge more heat and just can be condensed into water as refrigerant; More little when the condenser internal pressure, temperature is low more, then refrigerant vapour just can be condensed into water as refrigerant as long as discharge less heat.And the amount of water as refrigerant directly has influence on the effect of subsequent evaporation, absorption, has influence on refrigeration.In the control system of the said vehicle-mounted refrigeration plant of the utility model; Come to monitor the condenser temperature value in the condenser in real time through condenser temperature sensor further is set, processor compares condenser temperature value and condenser a reference value, according to the rotating speed of comparative result through drive circuit control radiator fan; Change condensation rate; Thereby obtain the amount of suitable water as refrigerant,, further improve refrigeration with energy efficient.Can also come monitoring condenser inner condenser force value in real time through the condenser pressure sensor further is set equally; And itself and condenser pressure a reference value compared; Come the dynamically rotating speed of adjustment radiator fan according to comparative result, further energy efficient is improved refrigeration.
In addition, the heat of water as refrigerant absorbing environmental air in evaporimeter is vaporizated into cryogenic coolant steam, and cryogenic coolant steam further carries out heat exchange with surrounding air simultaneously, further is admitted in the absorber behind the heat of absorbing environmental air.When the flow of water as refrigerant is excessive; The evaporimeter internal pressure raises, and critical temperature value raises when making the water as refrigerant vaporization, causes the cryogenic coolant vapor (steam) temperature in the evaporimeter higher; And then make the temperature difference of cryogenic coolant steam and surrounding air diminish, have influence on refrigeration; Simultaneously because pressure is excessive, cryogenic coolant steam also fully and surrounding air carry out just being admitted in the absorber after the sufficient heat exchange, cause evaporation efficiency low.When the flow of water as refrigerant was too small, the evaporimeter internal pressure reduced, and the heat of the surrounding air that the water as refrigerant vaporescence is absorbed is also less, directly has influence on refrigeration.In the control system of the said vehicle-mounted refrigeration plant of the utility model; Monitor the evaporator temperature value in the evaporimeter in real time through evaporator temperature sensor further is set, processor compares evaporator temperature value and evaporimeter a reference value, according to the rotating speed of comparative result through drive circuit control cryogenic fluid pump; Adjust water as refrigerant and spray into the amount in the evaporimeter; Change evaporation rate,, further improve refrigerating efficiency to avoid the unnecessary consumption of water as refrigerant.Can also come to monitor in real time value of evaporator pressure in the evaporimeter through the evaporator pressure sensor further is set equally; And itself and evaporator pressure a reference value compared; Come the dynamically rotating speed of adjustment cryogenic fluid pump according to comparative result, can further improve refrigerating efficiency.
To combine accompanying drawing and embodiment that the utility model is described further below.
[description of drawings]
Fig. 1 is the structural representation of the control system of the said vehicle-mounted refrigeration plant of the utility model;
Fig. 2 is the system block diagram of the control system of the said vehicle-mounted refrigeration plant of the utility model;
Fig. 3 is the flow chart of the control method of the said vehicle-mounted refrigeration plant heating plant of the utility model.
[specific embodiment]
In the control system of the said vehicle-mounted refrigeration plant of the utility model; Comprise generator A10, condenser A20, evaporimeter A30, absorber A40, processor B 10, memory B20, drive circuit B30, generator liquid level sensor S4, absorber liquid level sensor S7, be provided with concentrated solution pump A11 and weak solution pump A41 between generator A10 and the absorber A40.Wherein concentrated solution pump A11 is used for the concentrated solution in the generator A10 is imported in the absorber A40, and weak solution pump A41 is used for the weak solution in the absorber A40 is imported in the generator A10.Drive circuit B30 is used for driving concentrated solution pump A11 and weak solution pump A41 work; Concentrated solution pump A11 and weak solution pump A41 all are set to speed-variable pump; Processor B 10 can be controlled the rotating speed that drive circuit B30 regulates concentrated solution pump A11 and weak solution pump A41, with the regulator solution flow.At least store generator liquid level a reference value D4 and absorber liquid level a reference value D7 in the memory B20; Generator liquid level sensor S4 is used for detecting the amount of concentrated solution in the generator A10, i.e. generator level value d4; Absorber liquid level sensor S7 is used for detecting the amount of weak solution in the absorber A40, i.e. absorber level value d7.When generator level value d4 exceeds generator liquid level a reference value D4 scope; The amount that concentrated solution in the generator A10 is described is very few or too much; This moment, processor B 10 control drive circuit B30 adjusted the rotating speed of weak solution pump A41; Adjusting gets into the flow of weak solution in the generator A10 from absorber A40, and then regulates the amount of concentrated solution in the generator A10; When absorber level value d7 exceeds absorber liquid level a reference value D7 scope; The amount that weak solution in the absorber A40 is described is very few or too much; This moment, processor B 10 control drive circuit B30 adjusted the rotating speed of concentrated solution pump A11; Get into the flow of concentrated solution in the absorber A40 with adjusting from generator A10, and then regulate the amount of weak solution in the absorber A40.
Particularly; Generator liquid level a reference value D4 can be set comprise generator liquid level higher limit DX4 and generator liquid level lower limit DN4; As generator level value d4 during greater than generator liquid level higher limit DX4; The slow down rotating speed of weak solution pump A41 of processor B 10 control drive circuit B30 is to reduce the flow that flows into the weak solution in the generator A10 from absorber A40; As generator level value d4 during less than generator liquid level lower limit DN4, processor B 10 control drive circuit B30 accelerate the rotating speed of weak solution pump A41, to increase the flow that flows into the weak solution in the generator A10 from absorber A40, reach the purpose of adjusting.
Absorber liquid level a reference value D7 equally also can be set comprise absorber liquid level higher limit DX7 and absorber liquid level lower limit DN7; As absorber level value d7 during greater than absorber liquid level higher limit DX7; The slow down rotating speed of concentrated solution pump A11 of processor B 10 control drive circuit B30 is to reduce the flow of concentrated solution in the generator A10 inflow absorber A40; As absorber level value d7 during less than absorber liquid level lower limit DN7, processor B 10 control drive circuit B30 accelerate the rotating speed of concentrated solution pump A11, to increase the flow of the concentrated solution in the generator A10 inflow absorber A40, reach the purpose of adjusting.
Control is preferably in the first magnetic valve A12 is set between concentrated solution pump A11 and the absorber A40 for ease, and the first magnetic valve A12 is opened and closed through drive circuit B30 control by processor B 10; Be preferably in equally the second magnetic valve A42 is set between weak solution pump A41 and the generator A10, the second magnetic valve A42 is opened and closed through drive circuit B30 control by processor B 10.
In this preferred embodiment, be provided with the radiator fan A21 that drives by drive circuit B30 in the condenser A20, be used for the refrigerant vapour that imports from generator A10 is condensed into water as refrigerant.Condenser temperature sensor S11 preferably is set in condenser A20, is used for monitoring in real time the temperature in the condenser A20, i.e. condenser temperature value t11, and pass to processor B 10 in real time.In memory B20, also store condenser temperature higher limit TX11 and condenser temperature lower limit TN11.As condenser temperature value t11 during greater than condenser temperature higher limit TX11, processor B 10 control drive circuit B30 drive the rotating speed of radiator fan A21 to be accelerated with the rising of condenser temperature value t11, accelerates condensation rate with the temperature that reduces in the condenser A20; As condenser temperature value t11 during less than condenser temperature lower limit TN11; The rotating speed that processor B 10 control drive circuit B30 drive radiator fan A21 slows down with the reduction of condenser temperature value t11; Make radiator fan A21 keep enough rotating speeds; Be enough to make that refrigerant vapour is condensed into water as refrigerant, thereby reduce the consumption of electric energy, further energy efficient.
Pressure in condenser A20 is big more, explains that the amount of refrigerant vapour is many more, and needing the condensation rate of acceleration condenser A20 is water as refrigerant with too much refrigerant vapour rapid condensation.Condenser pressure sensor S10 preferably is set in condenser A20, is used for monitoring in real time the pressure in the condenser A20, i.e. condenser pressure value p10, and pass to processor B 10 in real time; In memory B20, also store condenser pressure higher limit PX10 and condenser pressure lower limit PN10.As condenser pressure value p10 during greater than condenser pressure higher limit PX10; The rotating speed of processor B 10 control drive circuit B30 driving radiator fan A21 increases with the rising of condenser pressure value p10; Make condensation rate accelerate, progressively reduce the pressure in the condenser A20 simultaneously; As condenser pressure value p10 during less than condenser pressure lower limit PN10; The rotating speed of processor B 10 control drive circuit B30 driving radiator fan A21 reduces with the reduction of condenser pressure value p10; Thereby guaranteeing to satisfy the condensation rate that progressively slows down under the prerequisite of the required water as refrigerant of kind of refrigeration cycle, energy efficient.
In this preferred embodiment, preferably between evaporimeter A30 and condenser A20, be provided with cryogenic fluid pump A22, be used for evaporating in the importing of the water as refrigerant in the condenser A20 evaporimeter A30.When evaporimeter A30 internal pressure is too high, explain that the amount of the water as refrigerant that imports is more, it is more that water as refrigerant is evaporated to the amount of refrigerant vapour, and evaporation rate is very fast; Because hypertonia, refrigerant vapour also fully and surrounding air just be admitted in the absorber A40 when carrying out heat exchange, cause evaporation efficiency low.Cross when low when evaporimeter A30 internal pressure, the refrigerant vapour after the heat exchange can't in time enter in the absorber A40, makes the heat of surrounding air in time to be taken away by refrigerant vapour, has influence on refrigeration.It is speed-variable pump that cryogenic fluid pump A22 preferably is set, and is driven by drive circuit B30; Evaporator pressure sensor S12 is set in evaporimeter A30, is used for monitoring in real time the pressure in the evaporimeter A30, i.e. value of evaporator pressure p12, and pass to processor B 10 in fact the time; Also store evaporator pressure higher limit PX12 and evaporator pressure lower limit PN12 in the memory B20 simultaneously.As value of evaporator pressure p12 during greater than evaporator pressure higher limit PX12; Explain that the water as refrigerant that imports in the evaporimeter A30 is too much; This moment, the rotating speed of processor B 10 control drive circuit B30 driving cryogenic fluid pump A22 slowed down with the rising of value of evaporator pressure p12; To reduce the amount that imports the water as refrigerant in the evaporimeter A30, improve evaporation efficiency.As value of evaporator pressure p12 during less than evaporator pressure lower limit PN12; Explain that the water as refrigerant that imports in the evaporimeter A30 is very few; This moment, the rotating speed of processor B 10 control drive circuit B30 driving cryogenic fluid pump A22 was accelerated with the reduction of value of evaporator pressure p12; To increase the amount that imports the water as refrigerant in the evaporimeter A30, improve refrigeration.
In addition, when evaporimeter A30 internal pressure was too high, critical temperature value was too high during the water as refrigerant vaporization, caused the cryogenic coolant vapor (steam) temperature in the evaporimeter A30 higher, and then made the temperature difference of cryogenic coolant steam and surrounding air diminish, and had influence on refrigeration; Cross when low when evaporimeter A30 internal pressure, critical temperature value is too high during the water as refrigerant vaporization, causes in the evaporimeter A30 cryogenic coolant vapor (steam) temperature low excessively, and this moment, evaporation rate was too fast, and the heat that is absorbed when water as refrigerant is vaporizated into refrigerant vapour reduces, and has influence on refrigerating efficiency.Evaporator temperature sensor S13 preferably also is set in evaporimeter A30, is used for monitoring in real time the temperature in the evaporimeter A30, i.e. evaporator temperature value t13, and pass to processor B 10 in real time; In memory B20, also store evaporator temperature higher limit TX13 and evaporator temperature lower limit TN13.As evaporator temperature value t13 during greater than evaporator temperature higher limit TX13; Explain that the water as refrigerant that imports is too much; Cause evaporimeter A30 internal pressure and temperature to raise, the rotating speed that the said drive circuit B30 of processor B 10 controls this moment drives said cryogenic fluid pump A22 slows down with the rising of evaporator temperature value t13, to reduce the amount of the water as refrigerant that imports; Reduce the temperature in the evaporimeter A30, improve refrigeration; As evaporator temperature value t13 during less than evaporator temperature lower limit TN13; The amount that the water as refrigerant that imports is described is very few; The said drive circuit B30 of processor B 10 controls this moment drives the rotating speed of said cryogenic fluid pump A22 to be accelerated with the reduction of evaporator temperature value t13; To reduce evaporation rate, improve refrigerating efficiency.
Control is preferably in the 3rd magnetic valve A23 is set between cryogenic fluid pump A22 and the evaporimeter A30 for ease, and processor B 10 is controlled the keying of the 3rd magnetic valve A23 through drive circuit B30.
In the above-described embodiments; Preferably also comprise setting module B40 and display module B50; Wherein setting module B40 is used to set a reference value; Can comprise keyboard B41 and keyboard circuit B42, during operation keyboard B41, keyboard circuit B42 can make amendment and is stored on the memory B20 through 10 pairs of various a reference values of processor B.Display module B50 is used to show relevant information, comprises display screen B51 and display driver circuit B52; Processor B 10 can be controlled various pressure, temperature, the liquid level a reference value of storing in the display screen B51 display-memory B20 through display driver circuit B52, like generator liquid level higher limit DX4 and generator liquid level lower limit DN4, absorber liquid level higher limit DX7 and absorber liquid level lower limit DN7, condenser temperature higher limit TX11 and condenser temperature lower limit TN11, condenser pressure higher limit PX10 and condenser pressure lower limit PN10, evaporator pressure higher limit PX12 and evaporator pressure lower limit PN12, evaporator temperature higher limit TX13 and evaporator temperature lower limit TN13 etc.; Real-time pressure value, real time temperature value or the real-time level value that also can show each several part in the kind of refrigeration cycle are like generator level value d4, absorber level value d7, condenser pressure value p10, condenser temperature value t11, value of evaporator pressure p12, evaporator temperature value t13 etc.
In the above-described embodiments; Cause danger in order to prevent that pressure is excessive, generator pressure sensor S5 preferably is set in generator A10, be used for monitoring in real time the pressure in the generator A10; Be generator force value p5, storage generator alarm pressure value PA5 in memory B20.Processor B 10 regularly reads generator force value p5 to generator pressure sensor S5; As generator force value p5 during more than or equal to generator alarm pressure value PA5; Explain that generator A10 internal pressure is too high, cause danger easily, this moment, processor B 10 was sent alarm signal; And forced stoppage, make whole kind of refrigeration cycle interrupt.
Equally absorber pressure sensor S8 can be set in absorber A40, be used for monitoring in real time the pressure in the absorber A40, i.e. absorber pressure value p8.In memory B20, store absorber alarm pressure value PA8, condenser alarm pressure value PA10, evaporimeter alarm pressure value PA12.When absorber pressure value p8 more than or equal to absorber alarm pressure value PA8, condenser pressure value p10 more than or equal to condenser alarm pressure value PA10 or value of evaporator pressure p12 during more than or equal to evaporimeter alarm pressure value PA12; Processor B 10 is sent alarm signal; And forced stoppage, make whole kind of refrigeration cycle interrupt.Above-mentioned various alarm pressure value can be preset in the memory B20, also can be provided with through said setting module, and can adjust according to actual conditions.
In the preferred embodiment of the control method of the said vehicle-mounted refrigeration plant of the utility model, mainly be to control over against above-mentioned control system.Read the various a reference values in the memory B20 earlier, compare, operate accordingly, improving the refrigeration of kind of refrigeration cycle, and reduce energy consumption, raising refrigerating efficiency according to comparative result in the real time data that each sensor is monitored and a reference value.Particularly; As shown in Figure 3; May further comprise the steps: processor B 10 reads relevant a reference value in memory B20; A reference value comprises generator liquid level higher limit DX4, generator liquid level lower limit DN4, absorber liquid level higher limit DX7, absorber liquid level lower limit DN7, condenser temperature higher limit TX11, condenser temperature lower limit TN11, condenser pressure higher limit PX10, condenser pressure lower limit PN10, evaporator temperature higher limit TX13, evaporator temperature lower limit TN13, evaporator pressure higher limit PX12, evaporator pressure lower limit PN12, step X00 shown in figure.In step X00, also can read the generator alarm pressure value PA5, absorber alarm pressure value PA8, condenser alarm pressure value PA10, the evaporimeter alarm pressure value PA12 that store in the memory B20 as required.
In generator A10, generator liquid level sensor S4 detects generator level value d4 and transfers to processor B 10, shown in step X11 among the figure; Processor B 10 is generator level value d4 and generator liquid level higher limit DX4 relatively, and carries out different disposal according to comparative result, step X13 shown in figure.As generator level value d4 during greater than generator liquid level higher limit DX4; The slow down rotating speed of weak solution pump A41 of processor B 10 control drive circuit B30; To reduce the flow that gets into weak solution in the generator A10 from absorber A40, return step X11, step X15 shown in figure; When generator level value d4 is less than or equal to generator liquid level higher limit DX4, then compares generator level value d4 and generator liquid level higher limit DX4, and carry out different disposal, step X17 shown in figure according to comparative result.As generator level value d4 during less than generator liquid level higher limit DX4; Processor B 10 control drive circuit B30 accelerate the rotating speed of said weak solution pump A41; To increase the flow that gets into weak solution in the generator A10 from absorber A40, return step X11, step X19 shown in figure; As generator level value d4 during, then directly be back to step X11 more than or equal to generator liquid level higher limit DX4.
In absorber A40, absorber liquid level sensor S7 detects absorber level value d7 and transfers to processor B 10, shown in step X21 among the figure; Processor B 10 is absorber level value d7 and absorber liquid level higher limit DX7 relatively, and carries out different disposal according to comparative result, step X23 shown in figure.As absorber level value d7 during greater than absorber liquid level higher limit DX7; The slow down rotating speed of concentrated solution pump A11 of processor B 10 control drive circuit B30; To reduce the flow that gets into concentrated solution in the generator A10 from absorber A40, return step X21, step X25 shown in figure; When absorber level value d7 is less than or equal to absorber liquid level higher limit DX7, then compares absorber level value d7 and absorber liquid level higher limit DX7, and carry out different disposal, step X27 shown in figure according to comparative result.As absorber level value d7 during less than absorber liquid level higher limit DX7; Processor B 10 control drive circuit B30 accelerate the rotating speed of said concentrated solution pump A11; To increase the flow that gets into concentrated solution in the generator A10 from absorber A40, return step X21, step X29 shown in figure; As absorber level value d7 during, then directly be back to step X21 more than or equal to absorber liquid level higher limit DX7.
In condenser A20, condenser temperature sensor S11 detects condenser temperature value t11 and transfers to processor B 10, shown in step X31 among the figure; Processor B 10 is condenser temperature value t11 and condenser temperature higher limit TX11 relatively, and carries out different disposal according to comparative result, step X33 shown in figure.As condenser temperature value t11 during greater than condenser temperature higher limit TX11, processor B 10 control drive circuit B30 drive the rotating speed of radiator fan A21 to be accelerated with the rising of condenser temperature value t11, returns step X31, step X35 shown in figure; When condenser temperature value t11 is less than or equal to condenser temperature higher limit TX11, then compare condenser temperature value t11 and condenser temperature lower limit TN11, step X37 shown in figure.As condenser temperature value t11 during less than condenser temperature lower limit TN11, the rotating speed that processor B 10 control drive circuit B30 drive radiator fan A21 slows down with the reduction of condenser temperature value t11, returns step X31, step X39 shown in figure; As condenser temperature value t11 during, then directly return step X31 more than or equal to condenser temperature lower limit TN11.
Meanwhile, in condenser A20, condenser pressure sensor S10 detects condenser pressure value p10 and transfers to processor B 10, shown in step X41 among the figure; Processor B 10 is condenser pressure value p10 and condenser pressure higher limit PX10 relatively, and carries out different disposal according to comparative result, step X43 shown in figure.As condenser pressure value p10 during greater than condenser pressure higher limit PX10, processor B 10 control drive circuit B30 drive the rotating speed of radiator fan A21 to be accelerated with the rising of condenser pressure value p10, returns step X41, step X45 shown in figure; When condenser pressure value p10 is less than or equal to condenser pressure higher limit PX10, then compare condenser pressure value p10 and condenser pressure lower limit PN10, step X47 shown in figure.As condenser pressure value p10 during less than condenser pressure lower limit PN10, the rotating speed that processor B 10 control drive circuit B30 drive radiator fan A21 slows down with the reduction of condenser pressure value p10, returns step X41, step X49 shown in figure; As condenser pressure value p10 during, then directly return step X41 more than or equal to condenser pressure lower limit PN10.
In evaporimeter A30, evaporator temperature sensor S13 detects evaporator temperature value t13 and transfers to processor B 10, shown in step X51 among the figure; Processor B 10 is evaporator temperature value t13 and evaporator temperature higher limit TX13 relatively, and carries out different disposal according to comparative result, step X53 shown in figure.As evaporator temperature value t13 during greater than evaporator temperature higher limit TX13, the rotating speed that processor B 10 control drive circuit B30 drive cryogenic fluid pump A22 slows down with the rising of evaporator temperature value t13, returns step X51, step X55 shown in figure; When evaporator temperature value t13 is less than or equal to evaporator temperature higher limit TX13, then compare evaporator temperature value t13 and evaporator temperature lower limit TN13, step X57 shown in figure.As evaporator temperature value t13 during less than evaporator temperature lower limit TN13, processor B 10 control drive circuit B30 drive the rotating speed of cryogenic fluid pump A22 to be accelerated with the reduction of evaporator temperature value t13, returns step X51, step X59 shown in figure; As evaporator temperature value t13 during, then directly return step X51 more than or equal to evaporator temperature lower limit TN13.
Meanwhile, in evaporimeter A30, evaporator pressure sensor S12 detects value of evaporator pressure p12 and transfers to processor B 10, shown in step X61 among the figure; Processor B 10 is value of evaporator pressure p12 and evaporator pressure higher limit PX12 relatively, and carries out different disposal according to comparative result, step X63 shown in figure.As value of evaporator pressure p12 during greater than evaporator pressure higher limit PX12, the rotating speed that processor B 10 control drive circuit B30 drive cryogenic fluid pump A22 slows down with the rising of value of evaporator pressure p12, returns step X61, step X65 shown in figure; When value of evaporator pressure p12 is less than or equal to evaporator pressure higher limit PX12, then compare value of evaporator pressure p12 and evaporator pressure lower limit PN12, step X67 shown in figure.As value of evaporator pressure p12 during less than evaporator pressure lower limit PN12, processor B 10 control drive circuit B30 drive the rotating speed of cryogenic fluid pump A22 to be accelerated with the reduction of value of evaporator pressure p12, returns step X61, step X69 shown in figure; As value of evaporator pressure p12 during, then directly return step X61 more than or equal to evaporator pressure lower limit PN12.
The above embodiment has only expressed several kinds of embodiments of the utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to the protection domain of the utility model.
Claims (7)
1. the control system of a vehicle-mounted refrigeration plant; Comprise generator, condenser, evaporimeter and absorber; Be provided with concentrated solution pump and weak solution pump between said generator and the absorber; It is characterized in that; Also comprise processor, store the drive circuit of memory, the said concentrated solution pump of driving and the weak solution pump work of generator liquid level a reference value (D4) and absorber liquid level a reference value (D7), the generator liquid level sensor (S4) of the interior generator level value (d4) of the said generator of detection, the absorber liquid level sensor (S7) of the interior absorber level value (d7) of the said absorber of detection; Said concentrated solution pump and weak solution pump are speed-variable pump; Said processor is controlled the rotating speed that said drive circuit is adjusted said weak solution pump when said generator level value (d4) exceeds generator liquid level a reference value (D4) scope, to regulate the flow that gets into weak solution in the generator from absorber; Said processor is controlled the rotating speed that said drive circuit is adjusted said concentrated solution pump when said absorber level value (d7) exceeds absorber liquid level a reference value (D7) scope, to regulate the flow that gets into concentrated solution in the absorber from generator.
2. according to the control system of the said vehicle-mounted refrigeration plant of claim 1; It is characterized in that; Said generator liquid level a reference value (D4) comprises generator liquid level higher limit (DX4) and generator liquid level lower limit (DN4); When said generator level value (d4) during greater than generator liquid level higher limit (DX4), said processor is controlled the slow down rotating speed of said weak solution pump of said drive circuit; When said generator level value (d4) during less than generator liquid level lower limit (DN4), said processor is controlled the rotating speed that said drive circuit is accelerated said weak solution pump.
3. according to the control system of the said vehicle-mounted refrigeration plant of claim 1; It is characterized in that; Said absorber liquid level a reference value (D7) comprises absorber liquid level higher limit (DX7) and absorber liquid level lower limit (DN7); When said absorber level value (d7) during greater than absorber liquid level higher limit (DX7), said processor is controlled the slow down rotating speed of said concentrated solution pump of said drive circuit; When said absorber level value (d7) during less than absorber liquid level lower limit (DN7), said processor is controlled the rotating speed that said drive circuit is accelerated said concentrated solution pump.
4. according to the control system of each said vehicle-mounted refrigeration plant in the claim 1 to 3, it is characterized in that, also comprise the condenser temperature sensor (S11) that detects said condenser inner condenser temperature value (t11); Also store condenser temperature higher limit (TX11) and condenser temperature lower limit (TN11) in the said memory; Be provided with radiator fan in the said condenser by said driving circuit drives; When condenser temperature value (t11) during greater than condenser temperature higher limit (TX11), processor is controlled the rotating speed of the said radiator fan of said driving circuit drives and is accelerated with the rising of condenser temperature value (t11); When condenser temperature value (t11) during less than condenser temperature lower limit (TN11), the rotating speed that processor is controlled the said radiator fan of said driving circuit drives slows down with the reduction of condenser temperature value (t11).
5. according to the control system of the said vehicle-mounted refrigeration plant of claim 4, it is characterized in that, also comprise the condenser pressure sensor (S10) that detects said condenser inner condenser force value (p10); Also store condenser pressure higher limit (PX10) and condenser pressure lower limit (PN10) in the said memory; When condenser pressure value (p10) during greater than condenser pressure higher limit (PX10), the rotating speed that processor is controlled the said radiator fan of said driving circuit drives increases with the rising of condenser pressure value (p10); When condenser pressure value (p10) during less than condenser pressure lower limit (PN10), the rotating speed that processor is controlled the said radiator fan of said driving circuit drives reduces with the reduction of condenser pressure value (p10).
6. according to the control system of each said vehicle-mounted refrigeration plant in the claim 1 to 3, it is characterized in that, also comprise the evaporator pressure sensor (S12) that detects value of evaporator pressure (p12) in the said evaporimeter; Also store evaporator pressure higher limit (PX12) and evaporator pressure lower limit (PN12) in the said memory; Also be provided with between said evaporimeter and the condenser water as refrigerant is pumped into the cryogenic fluid pump in the evaporimeter, said cryogenic fluid pump is a speed-variable pump and by said driving circuit drives; When value of evaporator pressure (p12) during greater than evaporator pressure higher limit (PX12), the rotating speed that processor is controlled the said cryogenic fluid pump of said driving circuit drives slows down with the rising of value of evaporator pressure (p12); When value of evaporator pressure (p12) during less than evaporator pressure lower limit (PN12), processor is controlled the rotating speed of the said cryogenic fluid pump of said driving circuit drives and is accelerated with the reduction of value of evaporator pressure (p12).
7. according to the control system of the said vehicle-mounted refrigeration plant of claim 6, it is characterized in that, also comprise the evaporator temperature sensor (S13) that detects evaporator temperature value (t13) in the said evaporimeter; Also store evaporator temperature higher limit (TX13) and evaporator temperature lower limit (TN13) in the said memory; When evaporator temperature value (t13) during greater than evaporator temperature higher limit (TX13), the rotating speed that processor is controlled the said cryogenic fluid pump of said driving circuit drives slows down with the rising of evaporator temperature value (t13); When evaporator temperature value (t13) during less than evaporator temperature lower limit (TN13), processor is controlled the rotating speed of the said cryogenic fluid pump of said driving circuit drives and is accelerated with the reduction of evaporator temperature value (t13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203723108U CN202304167U (en) | 2011-10-08 | 2011-10-08 | Control system for vehicle cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203723108U CN202304167U (en) | 2011-10-08 | 2011-10-08 | Control system for vehicle cooling device |
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| Publication Number | Publication Date |
|---|---|
| CN202304167U true CN202304167U (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203723108U Expired - Lifetime CN202304167U (en) | 2011-10-08 | 2011-10-08 | Control system for vehicle cooling device |
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| Country | Link |
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| CN (1) | CN202304167U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102313415A (en) * | 2011-10-08 | 2012-01-11 | 浪达科技（深圳）有限公司 | Control system of vehicular refrigerating equipment and method thereof |
| CN106255387A (en) * | 2016-08-31 | 2016-12-21 | 深圳绿色云图科技有限公司 | Cooling system and data center |
| CN114383324A (en) * | 2021-12-28 | 2022-04-22 | 北京华源泰盟节能设备有限公司 | Control method and device for refrigerant pump and lithium bromide absorption type large-temperature-difference unit |
-
2011
- 2011-10-08 CN CN2011203723108U patent/CN202304167U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102313415A (en) * | 2011-10-08 | 2012-01-11 | 浪达科技（深圳）有限公司 | Control system of vehicular refrigerating equipment and method thereof |
| CN102313415B (en) * | 2011-10-08 | 2014-01-29 | 深圳市唯克瑞投资咨询有限公司 | Control system of vehicular refrigerating equipment and method thereof |
| CN106255387A (en) * | 2016-08-31 | 2016-12-21 | 深圳绿色云图科技有限公司 | Cooling system and data center |
| CN106255387B (en) * | 2016-08-31 | 2019-05-03 | 深圳绿色云图科技有限公司 | Cooling system and data center |
| CN114383324A (en) * | 2021-12-28 | 2022-04-22 | 北京华源泰盟节能设备有限公司 | Control method and device for refrigerant pump and lithium bromide absorption type large-temperature-difference unit |
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