CN102313415B - Control system of vehicular refrigerating equipment and method thereof - Google Patents
Control system of vehicular refrigerating equipment and method thereof Download PDFInfo
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- CN102313415B CN102313415B CN201110296421.XA CN201110296421A CN102313415B CN 102313415 B CN102313415 B CN 102313415B CN 201110296421 A CN201110296421 A CN 201110296421A CN 102313415 B CN102313415 B CN 102313415B
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Abstract
The invention relates to a control system of vehicular refrigerating equipment, which comprises a generator, a condenser, an evaporator, an absorber, a concentrated solution pump, a dilute solution pump, a processor, a storage unit, a driving circuit, a generator liquid level sensor (S4) and an absorber liquid level sensor (S7). The concentrated solution pump and the dilute solution pump are variable-speed pumps; the processor controls the driving circuit to adjust the rotational speed of the dilute solution pump when a generator liquid level value (d4) exceeds the range of a generator liquid level reference value (D4), so as to regulate the flow of a dilute solution entering the generator from the absorber; and the processor controls the driving circuit to adjust the rotational speed of the concentrated solution pump when an absorber liquid level value (d7) exceeds the range of an absorber liquid level reference value (D7), so as to regulate the flow of a concentrated solution entering the absorber from the generator. Therefore, the liquid level balance in refrigeration circulation is controlled, so as to improve a refrigeration effect and improve refrigeration efficiency.
Description
[technical field]
The present invention relates to a kind of vehicle-mounted refrigerating equipment, more particularly, relate to a kind of control system and method thereof of vehicle-mounted refrigerating equipment.
[background technology]
In prior art, utilize the technology of thermal refrigerating conventionally to have two kinds of implementations: absorption and absorption type.For vehicle-mounted refrigerating equipment, be arranged in the confined space of car body absorption more easily dispersion, thereby be more suitable for vehicle-mounted.
Absorption refrigerating equipment generally includes generator, condenser, evaporimeter and absorber, generator internal pressure is lower, generator utilizes thermal source heated solution to form refrigerant vapour and concentrated solution, and wherein refrigerant vapour forms water as refrigerant after entering condenser condenses, then sprays in evaporimeter; Because evaporimeter internal pressure is lower, water as refrigerant evaporates and forms cryogenic coolant steam after absorbing environmental air heat, and surrounding air is lowered the temperature; Cryogenic coolant steam enters absorber, and the concentrated solution forming after evaporation in generator is pumped into after absorbing with cryogenic coolant steam in absorber by concentrated solution and forms weak solution, then carries out circularly cooling next time by weak solution pumped back generator.
When heat supply amount is excessive, the speed that reacts in generator, produces a large amount of refrigerant vapours, and the amount of the weak solution that produces after condensation, evaporation, absorption is increased; And the power of weak solution pump can not change, it is constant that absorber is sent into the weak solution amount of generator, causes weak solution liquid level in absorber to raise; And then the amount of concentrated solution in generator is reduced gradually; Solution in whole kind of refrigeration cycle is collected in absorber, and the amount of solution of actual participation kind of refrigeration cycle tails off, and has influence on refrigeration, causes thermal source heat that whole kind of refrigeration cycle the consumes worse problem of refrigeration more on the contrary.
When heat supply amount is too small, the speed that reacts in generator is slower, and the refrigerant vapour of generation is less, and the amount of the weak solution that produces after condensation, evaporation, absorption is reduced, and directly has influence on refrigeration; The quantitative change of the cryogenic coolant steam now flowing in absorber is few and to send into the weak solution amount of generator constant, cause weak solution liquid level in absorber to reduce, solution in whole kind of refrigeration cycle is collected in generator, make equally the amount of solution of actual participation kind of refrigeration cycle tail off, have influence on refrigeration.
Existing absorption refrigerating equipment adopts diesel engine or electric heater directly as the thermal source of generator conventionally, steadily there is not fluctuation in its heat supply, thereby the concentrated solution in generator and absorber and weak solution be easy to reach poised state, can obtain best refrigerating efficiency, reduce energy resource consumption.But vehicle-mounted refrigerating equipment utilizes the heat of engine cooling water and tail gas as generator thermal source conventionally, this thermal source quality is not high and fluctuation is larger, badly influences refrigerating efficiency and refrigeration.This is also that restriction utilizes engine exhaust heat to be applied to a vehicle-mounted technical bottleneck as the thermal source of absorption refrigerating equipment.
[summary of the invention]
The main technical problem to be solved in the present invention is, for existing the not high and fluctuation of thermal source quality compared with large and have influence on the problem of refrigerating efficiency and refrigeration in the vehicle-mounted refrigerating equipment that utilizes engine exhaust heat as thermal source in prior art, a kind of control system of vehicle-mounted refrigerating equipment is provided, can to whole refrigeration plant, automatically adapt to adjusting according to the number of thermal source quantity of heat given up, to obtain better refrigerating efficiency and refrigeration.
The present invention solves this technical problem adopted technical scheme: the control system of constructing a kind of vehicle-mounted refrigerating equipment, comprise generator, condenser, evaporimeter and absorber, between described generator and absorber, be provided with concentrated solution pump and weak solution pump, also comprise processor, store the memory of generator liquid level a reference value and absorber liquid level a reference value, drive the drive circuit of described concentrated solution pump and weak solution pump work, detect the generator liquid level sensor of generator level value in described generator, detect the absorber liquid level sensor of absorber level value in described absorber, described concentrated solution pump and weak solution pump are speed-variable pump, described processor is controlled the rotating speed that described drive circuit is adjusted described weak solution pump when described generator level value exceeds generator liquid level a reference value scope, to regulate, from absorber, enter the flow of weak solution in generator, described processor is controlled the rotating speed that described drive circuit is adjusted described concentrated solution pump when described absorber level value exceeds absorber liquid level a reference value scope, to regulate the flow that enters concentrated solution in absorber from generator.
In the control system of vehicle-mounted refrigerating equipment of the present invention, described generator liquid level a reference value comprises generator liquid level higher limit and generator liquid level lower limit, when described generator level value is greater than generator liquid level higher limit, described processor is controlled the slow down rotating speed of described weak solution pump of described drive circuit; When described generator level value is less than generator liquid level lower limit, described processor is controlled the rotating speed that described drive circuit is accelerated described weak solution pump.
In the control system of vehicle-mounted refrigerating equipment of the present invention, described absorber liquid level a reference value comprises absorber liquid level higher limit and absorber liquid level lower limit, when described absorber level value is greater than absorber liquid level higher limit, described processor is controlled the slow down rotating speed of described concentrated solution pump of described drive circuit; When described absorber level value is less than absorber liquid level lower limit, described processor is controlled the rotating speed that described drive circuit is accelerated described concentrated solution pump.
In the control system of vehicle-mounted refrigerating equipment of the present invention, also comprise the condenser temperature sensor that detects described condenser inner condenser temperature value; In described memory, also store condenser temperature higher limit and condenser temperature lower limit; In described condenser, be provided with the radiator fan being driven by described drive circuit; When condenser temperature value is greater than condenser temperature higher limit, processor is controlled described drive circuit and is driven the rotating speed of described radiator fan to accelerate with the rising of condenser temperature value; When condenser temperature value is less than condenser temperature lower limit, processor is controlled described drive circuit and is driven the rotating speed of described radiator fan to slow down with the reduction of condenser temperature value.
In the control system of vehicle-mounted refrigerating equipment of the present invention, also comprise the condenser pressure sensor that detects described condenser inner condenser force value; In described memory, also store condenser pressure higher limit and condenser pressure lower limit; When condenser pressure value is greater than condenser pressure higher limit, processor is controlled rotating speed that described drive circuit drives described radiator fan and is increased with the rising of condenser pressure value; When condenser pressure value is less than condenser pressure lower limit, processor is controlled rotating speed that described drive circuit drives described radiator fan and is reduced with the reduction of condenser pressure value.
In the control system of vehicle-mounted refrigerating equipment of the present invention, also comprise the evaporator temperature sensor that detects evaporator temperature value in described absorber; In described memory, also store evaporator temperature higher limit and evaporator temperature lower limit; Between described evaporimeter and condenser, be also provided with water as refrigerant is pumped into the cryogenic fluid pump in evaporimeter, described cryogenic fluid pump is speed-variable pump and is driven by described drive circuit; When evaporator temperature value is greater than evaporator temperature higher limit, processor is controlled described drive circuit and is driven the rotating speed of described cryogenic fluid pump to slow down with the rising of evaporator temperature value; When evaporator temperature value is less than evaporator temperature lower limit, processor is controlled described drive circuit and is driven the rotating speed of described cryogenic fluid pump to accelerate with the reduction of evaporator temperature value.
In the control system of vehicle-mounted refrigerating equipment of the present invention, also comprise the evaporator pressure sensor that detects value of evaporator pressure in described absorber; In described memory, also store evaporator pressure higher limit and evaporator pressure lower limit; When value of evaporator pressure is greater than evaporator pressure higher limit, processor is controlled described drive circuit and is driven the rotating speed of described cryogenic fluid pump to slow down with the rising of value of evaporator pressure; When value of evaporator pressure is less than evaporator pressure lower limit, processor is controlled described drive circuit and is driven the rotating speed of described cryogenic fluid pump to accelerate with the reduction of value of evaporator pressure.
Another technical problem that the present invention will solve is, for existing the not high and fluctuation of thermal source quality compared with large and have influence on the problem of refrigerating efficiency and refrigeration in the vehicle-mounted refrigerating equipment that utilizes engine exhaust heat as thermal source in prior art, a kind of control method of vehicle-mounted refrigerating equipment is provided, can to whole refrigeration plant, automatically adapt to adjusting according to the number of thermal source quantity of heat given up, to obtain better refrigerating efficiency and refrigeration.
The present invention solves this technical problem adopted technical scheme: a kind of control method of vehicle-mounted refrigerating equipment is provided, comprises the following steps:
X00, processor read generator liquid level higher limit, generator liquid level lower limit, absorber liquid level higher limit and absorber liquid level lower limit in memory, enter step X11 and S21 simultaneously;
X11, generator liquid level sensor detect generator level value and transfer to processor, if enter step X13X13 generator level value, are greater than generator liquid level higher limit, enter step X15, otherwise enter step X17;
X15, processor control the slow down rotating speed of described weak solution pump of drive circuit, to reduce the flow that enters weak solution in generator from absorber, return to step X11;
If X17 generator level value is less than generator liquid level lower limit, enters step X19, otherwise enter step X11;
X19, processor are controlled the rotating speed that drive circuit is accelerated described weak solution pump, to increase the flow that enters weak solution in generator from absorber, return to step X11;
X21, absorber liquid level sensor detect absorber level value and transfer to processor, enter step X23
If X23 absorber level value is greater than absorber liquid level higher limit, enters step X25, otherwise enter step X27;
X25, processor control the slow down rotating speed of described concentrated solution pump of drive circuit, to reduce the flow that enters concentrated solution in generator from absorber, return to step X21;
If X27 absorber level value is less than absorber liquid level higher limit, enters step X29, otherwise enter step X21;
X29, processor are controlled the rotating speed that drive circuit is accelerated described concentrated solution pump, to increase the flow that enters concentrated solution in generator from absorber, return to step X21.
In the control method of vehicle-mounted refrigerating equipment described in the invention described above, described step X00 also comprises and reads condenser temperature higher limit, condenser temperature lower limit, condenser pressure higher limit and condenser pressure lower limit, enters step X31, X41 simultaneously; Further comprising the steps of:
X31, condenser temperature sensor detect condenser temperature value and transfer to processor, enter step X33
If X33 condenser temperature value is greater than condenser temperature higher limit, enters step X35, otherwise enter step X37;
X35, processor are controlled drive circuit and are driven the rotating speed of radiator fan to accelerate with the rising of condenser temperature value, return to step X31;
If X37 condenser temperature value is less than condenser temperature lower limit, enters step X39, otherwise enter step X31;
X39, processor are controlled drive circuit and are driven the rotating speed of radiator fan to slow down with the reduction of condenser temperature value, return to step X31;
X41, condenser pressure sensor detect condenser pressure value and transfer to processor, enter step X43
If X43 condenser pressure value is greater than condenser pressure higher limit, enters step X45, otherwise enter step X47;
X45, processor are controlled drive circuit and are driven the rotating speed of radiator fan to accelerate with the rising of condenser pressure value, return to step X41;
If X47 condenser pressure value is less than condenser pressure lower limit, enters step X49, otherwise enter step X41;
X49, processor are controlled drive circuit and are driven the rotating speed of radiator fan to slow down with the reduction of condenser pressure value, return to step X41.
In the control method of vehicle-mounted refrigerating equipment described in the invention described above, described step X00 also comprises and reads evaporator temperature higher limit, evaporator temperature lower limit, evaporator pressure higher limit and evaporator pressure lower limit, enters step X51, X61 simultaneously; Further comprising the steps of:
X51, evaporator temperature sensor detect evaporator temperature value and transfer to processor, enter step X53
If X53 evaporator temperature value is greater than evaporator temperature higher limit, enters step X55, otherwise enter step X57;
X55, processor are controlled drive circuit and are driven the rotating speed of cryogenic fluid pump to slow down with the rising of evaporator temperature value, return to step X51;
If X57 evaporator temperature value is less than evaporator temperature lower limit, enters step X59, otherwise enter step X51;
X59, processor are controlled drive circuit and are driven the rotating speed of cryogenic fluid pump to accelerate with the reduction of evaporator temperature value, return to step X51;
X61, evaporator pressure sensor detect value of evaporator pressure and transfer to processor, enter step X63
If X63 value of evaporator pressure is greater than evaporator pressure higher limit, enters step X65, otherwise enter step X67;
X65, processor are controlled drive circuit and are driven the rotating speed of cryogenic fluid pump to slow down with the rising of value of evaporator pressure, return to step X61;
If X67 value of evaporator pressure is less than evaporator pressure lower limit, enters step X69, otherwise enter step X61;
X69, processor are controlled drive circuit and are driven the rotating speed of cryogenic fluid pump to accelerate with the reduction of value of evaporator pressure, return to step X61.
Control system and the method for implementing vehicle-mounted refrigerating equipment of the present invention, have following beneficial effect: by generator liquid level sensor is set, detect in real time the concentrated solution liquid level in generator, i.e. generator level value; Absorber liquid level sensor is set and detects in real time the weak solution liquid level in absorber, i.e. absorber level value; By processor, generator level value and generator liquid level a reference value are compared again, when generator level value exceeds generator liquid level a reference value scope, illustrate that in generator, concentrated solution is very few or too much, by drive circuit, accelerate again or the rotating speed of the weak solution pump that slows down, adjust from importing the amount of weak solution in generator in absorber, make concentrated solution in whole kind of refrigeration cycle and the amount balance of weak solution; Simultaneously, when absorber level value exceeds absorber liquid level a reference value scope, illustrate that in absorber, weak solution is very few or too much, by drive circuit, accelerate or the rotating speed of the concentrated solution pump that slows down, adjust from importing two of concentrated solution in absorber in generator, make concentrated solution in whole kind of refrigeration cycle and the amount balance of weak solution.Thus, can, by monitoring in real time the level value of solution in generator and absorber, by controlling the rotating speed of concentrated solution pump and weak solution pump, dense, weak solution amount in kind of refrigeration cycle dynamically be adjusted, to improve refrigerating efficiency, to improve refrigeration.Simultaneously due to, whole control system adopts automatically controlled mode, has dwindled the volume of control system, is more suitable for vehicle-mounted.
In addition, it is relevant with condenser internal pressure and temperature that refrigerant vapour is condensed into the process of water as refrigerant in condenser: when condenser internal pressure is larger, temperature is higher, refrigerant vapour need to discharge more heat and just can be condensed into water as refrigerant; When condenser internal pressure is less, temperature is lower, 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, have influence on refrigeration.In the control system of vehicle-mounted refrigerating equipment of the present invention, by being further set, condenser temperature sensor monitors in real time the condenser temperature value in condenser, processor compares condenser temperature value and condenser a reference value, according to comparative result, by drive circuit, control the rotating speed of radiator fan, change condensation rate, thereby obtain the amount of suitable water as refrigerant, to save energy consumption, further improve refrigeration.Can also monitor in real time condenser inner condenser force value by condenser pressure sensor is further set equally, and itself and condenser pressure a reference value are compared, according to comparative result, dynamically adjust the rotating speed of radiator fan, can further save energy consumption, improve 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 after the heat of absorbing environmental air, is admitted in absorber.When the flow of water as refrigerant is excessive, evaporimeter internal pressure raises, and while making water as refrigerant vaporization, critical temperature value raises, and causes the cryogenic coolant vapor (steam) temperature in evaporimeter higher, and then the temperature difference of cryogenic coolant steam and surrounding air is diminished, have influence on refrigeration; Because pressure is excessive, cryogenic coolant steam also incomplete and surrounding air carries out being just admitted in absorber after sufficient heat exchange, causes evaporation efficiency low simultaneously.When the flow of water as refrigerant is too small, evaporimeter internal pressure reduces, and the heat of the surrounding air that water as refrigerant vaporescence absorbs is also less, directly has influence on refrigeration.In the control system of vehicle-mounted refrigerating equipment of the present invention, by being further set, evaporator temperature sensor monitors in real time the evaporator temperature value in evaporimeter, processor compares evaporator temperature value and evaporimeter a reference value, according to comparative result, by drive circuit, control the rotating speed of cryogenic fluid pump, adjust water as refrigerant and spray into the amount in evaporimeter, change evaporation rate, to avoid the unnecessary consumption of water as refrigerant, further improve refrigerating efficiency.Can also monitor in real time value of evaporator pressure in evaporimeter by evaporator pressure sensor is further set equally, and itself and evaporator pressure a reference value are compared, according to comparative result, dynamically adjust the rotating speed of cryogenic fluid pump, can further improve refrigerating efficiency.
Below in conjunction with drawings and Examples, the invention will be further described.
[accompanying drawing explanation]
Fig. 1 is the structural representation of the control system of vehicle-mounted refrigerating equipment of the present invention;
Fig. 2 is the system block diagram of the control system of vehicle-mounted refrigerating equipment of the present invention;
Fig. 3 is the flow chart of the control method of vehicle-mounted refrigerating equipment heating device of the present invention.
[specific embodiment]
In the control system of vehicle-mounted refrigerating equipment of the present invention, 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, between generator A10 and absorber A40, be provided with concentrated solution pump A11 and weak solution pump A41.Wherein concentrated solution pump A11 is for importing the concentrated solution in generator A10 in absorber A40, and weak solution pump A41 is for importing the weak solution in absorber A40 in 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 are all 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 regulator solution flow.In memory B20, at least store generator liquid level a reference value D4 and absorber liquid level a reference value D7; Generator liquid level sensor S4 is used for detecting the amount of concentrated solution in generator A10, i.e. generator level value d4; Absorber liquid level sensor S7 is used for detecting the amount of weak solution in 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 generator A10 is described is very few or too much, now processor B 10 is controlled the rotating speed that drive circuit B30 adjusts weak solution pump A41, adjusting enters the flow of weak solution in generator A10 from absorber A40, and then regulates the amount of concentrated solution in generator A10; When absorber level value d7 exceeds absorber liquid level a reference value D7 scope, the amount that weak solution in absorber A40 is described is very few or too much, now processor B 10 is controlled the rotating speed that drive circuit B30 adjusts concentrated solution pump A11, to regulate, from generator A10, enter the flow of concentrated solution in absorber A40, and then the amount of the interior weak solution of regulating absorber A40.
Particularly, generator liquid level a reference value D4 can be set and comprise generator liquid level higher limit DX4 and generator liquid level lower limit DN4, when generator level value d4 is greater than generator liquid level higher limit DX4, processor B 10 is controlled the slow down rotating speed of weak solution pump A41 of drive circuit B30, to reduce the flow that flows into the weak solution in generator A10 from absorber A40; When generator level value d4 is less than generator liquid level lower limit DN4, processor B 10 is controlled the rotating speed that drive circuit B30 accelerates weak solution pump A41, to increase the flow that flows into the weak solution in generator A10 from absorber A40, reaches the object of adjusting.
Absorber liquid level a reference value D7 equally also can be set and comprise absorber liquid level higher limit DX7 and absorber liquid level lower limit DN7, when absorber level value d7 is greater than absorber liquid level higher limit DX7, processor B 10 is controlled the slow down rotating speed of concentrated solution pump A11 of drive circuit B30, to reduce from the flow of concentrated solution in generator A10 inflow absorber A40; When absorber level value d7 is less than absorber liquid level lower limit DN7, processor B 10 is controlled the rotating speed that drive circuit B30 accelerate concentrated solution pump A11, to increase from the flow of the concentrated solution in generator A10 inflow absorber A40, reaches the object of adjusting.
For convenient, control, be preferably between concentrated solution pump A11 and absorber A40 the first magnetic valve A12 is set, the first magnetic valve A12 is controlled and is opened and closed by drive circuit B30 by processor B 10; Be preferably in equally between weak solution pump A41 and generator A10 the second magnetic valve A42 is set, the second magnetic valve A42 is controlled and is opened and closed by drive circuit B30 by processor B 10.
In this preferred embodiment, in condenser A20, be provided with the radiator fan A21 being driven by drive circuit B30, for the refrigerant vapour importing from generator A10 is condensed into water as refrigerant.Condenser temperature sensor S11 is preferably set in condenser A20, for the temperature in Real-Time Monitoring condenser A20, i.e. condenser temperature value t11, and pass in real time processor B 10.In memory B20, also store condenser temperature higher limit TX11 and condenser temperature lower limit TN11.When condenser temperature value t11 is greater than condenser temperature higher limit TX11, processor B 10 is controlled drive circuit B30 and is driven the rotating speed of radiator fan A21 to accelerate with the rising of condenser temperature value t11, with the temperature reducing in condenser A20, accelerates condensation rate; When condenser temperature value t11 is less than condenser temperature lower limit TN11, processor B 10 is controlled drive circuit B30 and is driven the rotating speed of radiator fan A21 to slow down with the reduction of condenser temperature value t11, make radiator fan A21 maintain enough rotating speeds, be enough to make refrigerant vapour to be condensed into water as refrigerant, thereby reduce the consumption of electric energy, further save energy consumption.
Pressure in condenser A20 is larger, illustrates that the amount of refrigerant vapour is more, and the condensation rate that need to accelerate condenser A20 is water as refrigerant by too much refrigerant vapour rapid condensation.Condenser pressure sensor S10 is preferably set in condenser A20, for the pressure in Real-Time Monitoring condenser A20, i.e. condenser pressure value p10, and pass in real time processor B 10; In memory B20, also store condenser pressure higher limit PX10 and condenser pressure lower limit PN10.When condenser pressure value p10 is 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, condensation rate is accelerated, progressively reduced the pressure in condenser A20 simultaneously; When condenser pressure value p10 is 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 meet the condensation rate that progressively slows down under the prerequisite of the required water as refrigerant of kind of refrigeration cycle, save energy consumption.
In this preferred embodiment, preferably between evaporimeter A30 and condenser A20, be provided with cryogenic fluid pump A22, for the water as refrigerant in condenser A20 is imported in evaporimeter A30 and evaporated.When evaporimeter A30 internal pressure is too high, illustrate that the amount of the water as refrigerant importing is more, it is more that water as refrigerant is evaporated to the amount of refrigerant vapour, and evaporation rate is very fast; Due to hypertonia, refrigerant vapour is just admitted in absorber A40 when also inabundant and surrounding air carries out heat exchange, causes evaporation efficiency low.When evaporimeter A30 internal pressure is too low, the refrigerant vapour after heat exchange cannot enter in absorber A40 in time, and the heat of surrounding air cannot be taken away by refrigerant vapour in time, has influence on refrigeration.It is speed-variable pump that cryogenic fluid pump A22 is preferably set, and by drive circuit, B30 drives; Evaporator pressure sensor S12 is set in evaporimeter A30, for the pressure in Real-Time Monitoring evaporimeter A30, i.e. value of evaporator pressure p12, and it is passed to processor B 10 in real time; In simultaneous memory B20, also store evaporator pressure higher limit PX12 and evaporator pressure lower limit PN12.When value of evaporator pressure p12 is greater than evaporator pressure higher limit PX12, illustrate that the water as refrigerant importing in evaporimeter A30 is too much, now processor B 10 control drive circuit B30 drive the rotating speed of cryogenic fluid pump A22 to slow down with the rising of value of evaporator pressure p12, to reduce the amount that imports the water as refrigerant in evaporimeter A30, improve evaporation efficiency.When value of evaporator pressure p12 is less than evaporator pressure lower limit PN12, illustrate that the water as refrigerant importing in evaporimeter A30 is very few, now processor B 10 control drive circuit B30 drive the rotating speed of cryogenic fluid pump A22 to accelerate with the reduction of value of evaporator pressure p12, to increase the amount that imports the water as refrigerant in evaporimeter A30, improve refrigeration.
In addition, when evaporimeter A30 internal pressure is too high, during water as refrigerant vaporization, critical temperature value is too high, causes the cryogenic coolant vapor (steam) temperature in evaporimeter A30 higher, and then the temperature difference of cryogenic coolant steam and surrounding air is diminished, and has influence on refrigeration; When evaporimeter A30 internal pressure is too low, during water as refrigerant vaporization, critical temperature value is too high, causes the interior cryogenic coolant vapor (steam) temperature of evaporimeter A30 too low, and now evaporation rate is too fast, and the heat absorbing when water as refrigerant is vaporizated into refrigerant vapour reduces, and has influence on refrigerating efficiency.Evaporator temperature sensor S13 is preferably also set in evaporimeter A30, for the temperature in Real-Time Monitoring evaporimeter A30, i.e. evaporator temperature value t13, and pass in real time processor B 10; In memory B20, also store evaporator temperature higher limit TX13 and evaporator temperature lower limit TN13.When evaporator temperature value t13 is greater than evaporator temperature higher limit TX13, illustrate that the water as refrigerant importing is too much, cause evaporimeter A30 internal pressure and temperature to raise, the described drive circuit B30 of now processor B 10 control drives the rotating speed of described cryogenic fluid pump A22 to slow down with the rising of evaporator temperature value t13, to reduce the amount of the water as refrigerant importing, reduce the temperature in evaporimeter A30, improve refrigeration; When evaporator temperature value t13 is less than evaporator temperature lower limit TN13, the amount that the water as refrigerant importing is described is very few, the described drive circuit B30 of now processor B 10 control drives the rotating speed of described cryogenic fluid pump A22 to accelerate with the reduction of evaporator temperature value t13, to reduce evaporation rate, improve refrigerating efficiency.
For convenient, control, be preferably between cryogenic fluid pump A22 and evaporimeter A30 the 3rd magnetic valve A23 is set, processor B 10 is controlled the keying of the 3rd magnetic valve A23 by drive circuit B30.
In the above-described embodiments, preferably also comprise setting module B40 and display module B50, wherein setting module B40 is used for setting a reference value, can comprise keyboard B41 and keyboard circuit B42, during operation keyboard B41, keyboard circuit B42 can be modified and is stored on memory B20 by 10 pairs of various a reference values of processor B.Display module B50 is used for showing relevant information, comprises display screen B51 and display driver circuit B52, processor B 10 can control by display driver circuit B52 the various pressure of storing in display screen B51 display-memory B20, temperature, liquid level a reference value, as 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 kind of refrigeration cycle, as 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, in order to prevent that pressure is excessive and cause danger, generator pressure sensor S5 is preferably set in generator A10, for the pressure in Real-Time Monitoring generator A10, be generator force value p5, in memory B20, store generator alarm pressure value PA5.Processor B 10 regularly reads generator force value p5 to generator pressure sensor S5; when generator force value p5 is more than or equal to generator alarm pressure value PA5; illustrate that generator A10 internal pressure is too high; easily cause danger; now processor B 10 is sent alarm signal; and forced stoppage, whole kind of refrigeration cycle is interrupted.
Equally absorber pressure sensor S8 can be set in absorber A40, for the pressure in Real-Time Monitoring 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 is more than or equal to absorber alarm pressure value PA8, condenser pressure value p10 and is more than or equal to condenser alarm pressure value PA10 or value of evaporator pressure p12 and is more than or equal to evaporimeter alarm pressure value PA12; processor B 10 is sent alarm signal; and forced stoppage, whole kind of refrigeration cycle is interrupted.Above-mentioned various alarm pressure value can be preset in memory B20, also can arrange by described setting module, and can adjust according to actual conditions.
In the preferred embodiment of the control method of vehicle-mounted refrigerating equipment of the present invention, be mainly to control over against above-mentioned control system.Various a reference values in first read memory B20, by each Sensor monitoring to real time data and a reference value compare, according to comparative result, operate accordingly, to improve the refrigeration of kind of refrigeration cycle, and reduce energy consumption, raising refrigerating efficiency.Particularly, as shown in Figure 3, comprise the following 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 as shown in FIG..In step X00, also can read as required generator alarm pressure value PA5, the absorber alarm pressure value PA8, condenser alarm pressure value PA10, the evaporimeter alarm pressure value PA12 that in memory B20, store.
In generator A10, generator liquid level sensor S4 detects generator level value d4 and transfers to processor B 10, as shown in step X11 in 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, as shown in FIG. step X13.When generator level value d4 is greater than generator liquid level higher limit DX4, processor B 10 is controlled the slow down rotating speed of weak solution pump A41 of drive circuit B30, to reduce, from absorber A40, enter the flow of weak solution in generator A10, return to step X11, as shown in FIG. step X15; When generator level value d4 is less than or equal to generator liquid level higher limit DX4, compares generator level value d4 and generator liquid level higher limit DX4, and carry out different disposal according to comparative result, as shown in FIG. step X17.When generator level value d4 is less than generator liquid level higher limit DX4, processor B 10 is controlled the rotating speed that drive circuit B30 accelerates described weak solution pump A41, to increase, from absorber A40, enter the flow of weak solution in generator A10, return to step X11, as shown in FIG. step X19; When generator level value d4 is more than or equal to generator liquid level higher limit DX4, be directly back to step X11.
In absorber A40, absorber liquid level sensor S7 detects absorber level value d7 and transfers to processor B 10, as shown in step X21 in 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, as shown in FIG. step X23.When absorber level value d7 is greater than absorber liquid level higher limit DX7, processor B 10 is controlled the slow down rotating speed of concentrated solution pump A11 of drive circuit B30, to reduce, from absorber A40, enter the flow of concentrated solution in generator A10, return to step X21, as shown in FIG. step X25; When absorber level value d7 is less than or equal to absorber liquid level higher limit DX7, compares absorber level value d7 and absorber liquid level higher limit DX7, and carry out different disposal according to comparative result, as shown in FIG. step X27.When absorber level value d7 is less than absorber liquid level higher limit DX7, processor B 10 is controlled the rotating speed that drive circuit B30 accelerates described concentrated solution pump A11, to increase, from absorber A40, enter the flow of concentrated solution in generator A10, return to step X21, as shown in FIG. step X29; When absorber level value d7 is more than or equal to absorber liquid level higher limit DX7, be directly back to step X21.
In condenser A20, condenser temperature sensor S11 detects condenser temperature value t11 and transfers to processor B 10, as shown in step X31 in 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, as shown in FIG. step X33.When condenser temperature value t11 is greater than condenser temperature higher limit TX11, processor B 10 is controlled drive circuit B30 and is driven the rotating speed of radiator fan A21 to accelerate with the rising of condenser temperature value t11, returns to step X31, as shown in FIG. step X35; When condenser temperature value t11 is less than or equal to condenser temperature higher limit TX11, compare condenser temperature value t11 and condenser temperature lower limit TN11, as shown in FIG. step X37.When condenser temperature value t11 is less than condenser temperature lower limit TN11, processor B 10 is controlled drive circuit B30 and is driven the rotating speed of radiator fan A21 to slow down with the reduction of condenser temperature value t11, returns to step X31, as shown in FIG. step X39; When condenser temperature value t11 is more than or equal to condenser temperature lower limit TN11, directly return to step X31.
Meanwhile, in condenser A20, condenser pressure sensor S10 detects condenser pressure value p10 and transfers to processor B 10, as shown in step X41 in 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, as shown in FIG. step X43.When condenser pressure value p10 is greater than condenser pressure higher limit PX10, processor B 10 is controlled drive circuit B30 and is driven the rotating speed of radiator fan A21 to accelerate with the rising of condenser pressure value p10, returns to step X41, as shown in FIG. step X45; When condenser pressure value p10 is less than or equal to condenser pressure higher limit PX10, compare condenser pressure value p10 and condenser pressure lower limit PN10, as shown in FIG. step X47.When condenser pressure value p10 is less than condenser pressure lower limit PN10, processor B 10 is controlled drive circuit B30 and is driven the rotating speed of radiator fan A21 to slow down with the reduction of condenser pressure value p10, returns to step X41, as shown in FIG. step X49; When condenser pressure value p10 is more than or equal to condenser pressure lower limit PN10, directly return to step X41.
In evaporimeter A30, evaporator temperature sensor S13 detects evaporator temperature value t13 and transfers to processor B 10, as shown in step X51 in 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, as shown in FIG. step X53.When evaporator temperature value t13 is greater than evaporator temperature higher limit TX13, processor B 10 is controlled drive circuit B30 and is driven the rotating speed of cryogenic fluid pump A22 to slow down with the rising of evaporator temperature value t13, returns to step X51, as shown in FIG. step X55; When evaporator temperature value t13 is less than or equal to evaporator temperature higher limit TX13, compare evaporator temperature value t13 and evaporator temperature lower limit TN13, as shown in FIG. step X57.When evaporator temperature value t13 is less than evaporator temperature lower limit TN13, processor B 10 is controlled drive circuit B30 and is driven the rotating speed of cryogenic fluid pump A22 to accelerate with the reduction of evaporator temperature value t13, returns to step X51, as shown in FIG. step X59; When evaporator temperature value t13 is more than or equal to evaporator temperature lower limit TN13, directly return to step X51.
Meanwhile, in evaporimeter A30, evaporator pressure sensor S12 detects value of evaporator pressure p12 and transfers to processor B 10, as shown in step X61 in 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, as shown in FIG. step X63.When value of evaporator pressure p12 is greater than evaporator pressure higher limit PX12, processor B 10 is controlled drive circuit B30 and is driven the rotating speed of cryogenic fluid pump A22 to slow down with the rising of value of evaporator pressure p12, returns to step X61, as shown in FIG. step X65; When value of evaporator pressure p12 is less than or equal to evaporator pressure higher limit PX12, compare value of evaporator pressure p12 and evaporator pressure lower limit PN12, as shown in FIG. step X67.When value of evaporator pressure p12 is less than evaporator pressure lower limit PN12, processor B 10 is controlled drive circuit B30 and is driven the rotating speed of cryogenic fluid pump A22 to accelerate with the reduction of value of evaporator pressure p12, returns to step X61, as shown in FIG. step X69; When value of evaporator pressure p12 is more than or equal to evaporator pressure lower limit PN12, directly return to step X61.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (10)
1. the control system of a vehicle-mounted refrigerating equipment, comprise generator, condenser, evaporimeter and absorber, between described generator and absorber, be provided with concentrated solution pump and weak solution pump, it is characterized in that, also comprise processor, store the memory of generator liquid level a reference value (D4) and absorber liquid level a reference value (D7), drive the drive circuit of described concentrated solution pump and weak solution pump work, detect the generator liquid level sensor (S4) of generator level value (d4) in described generator, detect the absorber liquid level sensor (S7) of absorber level value (d7) in described absorber, described concentrated solution pump and weak solution pump are speed-variable pump, described processor is controlled the rotating speed that described drive circuit is adjusted described weak solution pump when described generator level value (d4) exceeds generator liquid level a reference value (D4) scope, to regulate, from absorber, enter the flow of weak solution in generator, described processor is controlled the rotating speed that described drive circuit is adjusted described concentrated solution pump when described absorber level value (d7) exceeds absorber liquid level a reference value (D7) scope, to regulate the flow that enters concentrated solution in absorber from generator.
2. the control system of vehicle-mounted refrigerating equipment according to claim 1, it is characterized in that, described generator liquid level a reference value (D4) comprises generator liquid level higher limit (DX4) and generator liquid level lower limit (DN4), when described generator level value (d4) is greater than generator liquid level higher limit (DX4), described processor is controlled the slow down rotating speed of described weak solution pump of described drive circuit; When described generator level value (d4) is less than generator liquid level lower limit (DN4), described processor is controlled the rotating speed that described drive circuit is accelerated described weak solution pump.
3. the control system of vehicle-mounted refrigerating equipment according to claim 1, it is characterized in that, described absorber liquid level a reference value (D7) comprises absorber liquid level higher limit (DX7) and absorber liquid level lower limit (DN7), when described absorber level value (d7) is greater than absorber liquid level higher limit (DX7), described processor is controlled the slow down rotating speed of described concentrated solution pump of described drive circuit; When described absorber level value (d7) is less than absorber liquid level lower limit (DN7), described processor is controlled the rotating speed that described drive circuit is accelerated described concentrated solution pump.
4. according to the control system of vehicle-mounted refrigerating equipment described in any one in claims 1 to 3, it is characterized in that, also comprise the condenser temperature sensor (S11) that detects described condenser inner condenser temperature value (t11); In described memory, also store condenser temperature higher limit (TX11) and condenser temperature lower limit (TN11); In described condenser, be provided with the radiator fan being driven by described drive circuit; When condenser temperature value (t11) is greater than condenser temperature higher limit (TX11), processor is controlled described drive circuit and is driven the rotating speed of described radiator fan to accelerate with the rising of condenser temperature value (t11); When condenser temperature value (t11) is less than condenser temperature lower limit (TN11), processor is controlled described drive circuit and is driven the rotating speed of described radiator fan to slow down with the reduction of condenser temperature value (t11).
5. the control system of vehicle-mounted refrigerating equipment according to claim 4, is characterized in that, also comprises the condenser pressure sensor (S10) that detects described condenser inner condenser force value (p10); In described memory, also store condenser pressure higher limit (PX10) and condenser pressure lower limit (PN10); When condenser pressure value (p10) is greater than condenser pressure higher limit (PX10), processor is controlled rotating speed that described drive circuit drives described radiator fan and is increased with the rising of condenser pressure value (p10); When condenser pressure value (p10) is less than condenser pressure lower limit (PN10), processor is controlled rotating speed that described drive circuit drives described radiator fan and is reduced with the reduction of condenser pressure value (p10).
6. according to the control system of vehicle-mounted refrigerating equipment described in any one in claims 1 to 3, it is characterized in that, also comprise the evaporator pressure sensor (S12) that detects value of evaporator pressure (p12) in described evaporimeter; In described memory, also store evaporator pressure higher limit (PX12) and evaporator pressure lower limit (PN12); Between described evaporimeter and condenser, be also provided with water as refrigerant is pumped into the cryogenic fluid pump in evaporimeter, described cryogenic fluid pump is speed-variable pump and is driven by described drive circuit; When value of evaporator pressure (p12) is greater than evaporator pressure higher limit (PX12), processor is controlled described drive circuit and is driven the rotating speed of described cryogenic fluid pump to slow down with the rising of value of evaporator pressure (p12); When value of evaporator pressure (p12) is less than evaporator pressure lower limit (PN12), processor is controlled described drive circuit and is driven the rotating speed of described cryogenic fluid pump to accelerate with the reduction of value of evaporator pressure (p12).
7. the control system of vehicle-mounted refrigerating equipment according to claim 6, is characterized in that, also comprises the evaporator temperature sensor (S13) that detects evaporator temperature value (t13) in described evaporimeter; In described memory, also store evaporator temperature higher limit (TX13) and evaporator temperature lower limit (TN13); When evaporator temperature value (t13) is greater than evaporator temperature higher limit (TX13), processor is controlled described drive circuit and is driven the rotating speed of described cryogenic fluid pump to slow down with the rising of evaporator temperature value (t13); When evaporator temperature value (t13) is less than evaporator temperature lower limit (TN13), processor is controlled described drive circuit and is driven the rotating speed of described cryogenic fluid pump to accelerate with the reduction of evaporator temperature value (t13).
8. a control method for the control system of vehicle-mounted refrigerating equipment as claimed in claim 1, is characterized in that, comprises the following steps:
X00, processor read generator liquid level higher limit (DX4), generator liquid level lower limit (DN4), absorber liquid level higher limit (DX7) and absorber liquid level lower limit (DN7) in memory, enter step X11 and X21 simultaneously;
X11, generator liquid level sensor (S4) detect generator level value (d4) and transfer to processor, enter step X13;
If X13 generator level value (d4) is greater than generator liquid level higher limit (DX4), enters step X15, otherwise enter step X17;
X15, processor control the slow down rotating speed of weak solution pump of drive circuit, to reduce the flow that enters weak solution in generator from absorber, return to step X11;
If X17 generator level value (d4) is less than generator liquid level lower limit (DN4), enters step X19, otherwise enter step X11;
X19, processor are controlled the rotating speed that drive circuit is accelerated weak solution pump, to increase the flow that enters weak solution in generator from absorber, return to step X11;
X21, absorber liquid level sensor (S7) detect absorber level value (d7) and transfer to processor, enter step X23;
If X23 absorber level value (d7) is greater than absorber liquid level higher limit (DX7), enters step X25, otherwise enter step X27;
X25, processor control the slow down rotating speed of concentrated solution pump of drive circuit, to reduce the flow that enters concentrated solution in generator from absorber, return to step X21;
If X27 absorber level value (d7) is less than absorber liquid level higher limit (DX7), enters step X29, otherwise enter step X21;
X29, processor are controlled the rotating speed that drive circuit is accelerated concentrated solution pump, to increase the flow that enters concentrated solution in generator from absorber, return to step X21.
9. control method according to claim 8, it is characterized in that, described step X00 also comprises and reads condenser temperature higher limit (TX11), condenser temperature lower limit (TN11), condenser pressure higher limit (PX10) and condenser pressure lower limit (PN10), enters step X31, X41 simultaneously; Further comprising the steps of:
X31, condenser temperature sensor (S11) detect condenser temperature value (t11) and transfer to processor, enter step X33;
If X33 condenser temperature value (t11) is greater than condenser temperature higher limit (TX11), enters step X35, otherwise enter step X37;
X35, processor are controlled drive circuit and are driven the rotating speed of radiator fan to accelerate with the rising of condenser temperature value (t11), return to step X31;
If X37 condenser temperature value (t11) is less than condenser temperature lower limit (TN11), enters step X39, otherwise enter step X31;
X39, processor are controlled drive circuit and are driven the rotating speed of radiator fan to slow down with the reduction of condenser temperature value (t11), return to step X31;
X41, condenser pressure sensor (S10) detect condenser pressure value (p10) and transfer to processor, enter step X43;
If X43 condenser pressure value (p10) is greater than condenser pressure higher limit (PX10), enters step X45, otherwise enter step X47;
X45, processor are controlled drive circuit and are driven the rotating speed of radiator fan to accelerate with the rising of condenser pressure value (p10), return to step X41;
If X47 condenser pressure value (p10) is less than condenser pressure lower limit (PN10), enters step X49, otherwise enter step X41;
X49, processor are controlled drive circuit and are driven the rotating speed of radiator fan to slow down with the reduction of condenser pressure value (p10), return to step X41.
10. control method according to claim 8, it is characterized in that, described step X00 also comprises and reads evaporator temperature higher limit (TX13), evaporator temperature lower limit (TN13), evaporator pressure higher limit (PX12) and evaporator pressure lower limit (PN12), enters step X51, X61 simultaneously; Further comprising the steps of:
X51, evaporator temperature sensor (S13) detect evaporator temperature value (t13) and transfer to processor, enter step X53;
If X53 evaporator temperature value (t13) is greater than evaporator temperature higher limit (TX13), enters step X55, otherwise enter step X57;
X55, processor are controlled drive circuit and are driven the rotating speed of cryogenic fluid pump to slow down with the rising of evaporator temperature value (t13), return to step X51;
If X57 evaporator temperature value (t13) is less than evaporator temperature lower limit (TN13), enters step X59, otherwise enter step X51;
X59, processor are controlled drive circuit and are driven the rotating speed of cryogenic fluid pump to accelerate with the reduction of evaporator temperature value (t13), return to step X51;
X61, evaporator pressure sensor (S12) detect value of evaporator pressure (p12) and transfer to processor, enter step X63;
If X63 value of evaporator pressure (p12) is greater than evaporator pressure higher limit (PX12), enters step X65, otherwise enter step X67;
X65, processor are controlled drive circuit and are driven the rotating speed of cryogenic fluid pump to slow down with the rising of value of evaporator pressure (p12), return to step X61;
If X67 value of evaporator pressure (p12) is less than evaporator pressure lower limit (PN12), enters step X69, otherwise enter step X61;
X69, processor are controlled drive circuit and are driven the rotating speed of cryogenic fluid pump to accelerate with the reduction of value of evaporator pressure (p12), return to step X61.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101046693A (en) * | 2006-03-28 | 2007-10-03 | 三洋电机株式会社 | Absorption refrigeration machine |
| CN202304167U (en) * | 2011-10-08 | 2012-07-04 | 浪达科技（深圳）有限公司 | Control system for vehicle cooling device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4791520B2 (en) * | 2007-11-01 | 2011-10-12 | キヤノンアネルバ株式会社 | Cryopump device, vacuum processing device, and operation method of cryopump device |
| JP2009236369A (en) * | 2008-03-26 | 2009-10-15 | Sanyo Electric Co Ltd | Absorption chiller/heater |
| JP2009236368A (en) * | 2008-03-26 | 2009-10-15 | Sanyo Electric Co Ltd | Absorption chiller/heater |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101046693A (en) * | 2006-03-28 | 2007-10-03 | 三洋电机株式会社 | Absorption refrigeration machine |
| CN202304167U (en) * | 2011-10-08 | 2012-07-04 | 浪达科技（深圳）有限公司 | Control system for vehicle cooling device |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2009-236368A 2009.10.15 |
| JP特开2009-236369A 2009.10.15 |
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