CN201764770U - Mobile refrigeration equipment driven by direct current (DC) with air curtain - Google Patents
Mobile refrigeration equipment driven by direct current (DC) with air curtain Download PDFInfo
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- CN201764770U CN201764770U CN2010205147921U CN201020514792U CN201764770U CN 201764770 U CN201764770 U CN 201764770U CN 2010205147921 U CN2010205147921 U CN 2010205147921U CN 201020514792 U CN201020514792 U CN 201020514792U CN 201764770 U CN201764770 U CN 201764770U
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Abstract
A mobile refrigeration equipment driven by DC with air curtain is disclosed herein comprising an insulation tank which is provided with a refrigeration system and a power supply system, and an air curtain apparatus which provides an air curtain which can prevent the entrance of hot air for the insulation tank, wherein a compressor of the refrigeration system is a DC frequency conversion compressor so as to provide power for the second DC voltage, the power supply system containing a first DC voltage which is capable of charging onboard power supply and a double-power supply DC generator of the second DC voltage to charge a battery, a first DC voltage output end of the double-power supply DC generator and the onboard power supply being capable of selectively forming an air curtain power supply for charging the air curtain apparatus, a travel switch being disposed on the connecting lines of the air curtain power supply and the air curtain apparatus, the travel switch being disposed on the path of the tank door on-off of the insulation tank. The air curtain can prevent hot air from entering the tank in favor of food reservation and energy saving.
Description
Technical field
The utility model relates to a kind of mobile refrigeration equipment that is used to transport, have enough to meet the need, store frozen food.
Background technology
In the refrigeration plant course of work, run into the problem of kinds of goods and personnel's turnover through regular meeting; in a single day the storehouse door of refrigeration plant is opened; the bigger temperature difference can make a large amount of hot-airs pour in the body of refrigeration plant storehouse inside and outside the storehouse, is unfavorable for the food accumulating, also can increase the power consumption of equipment simultaneously.In non-moving refrigeration plant, it is more common to use air curtain apparatus to solve the problems referred to above, when the Ku Men of refrigeration plant opens, the air curtain apparatus that is installed in door place, storehouse starts, and produces gas curtain, stops hot-air to enter, when cargo handling finishes, Ku Men closes, and the storehouse door touches the switch between air curtain apparatus and the power supply, and air curtain apparatus is closed automatically.In non-moving refrigeration plant, air curtain apparatus generally adopts mains-supplied.
But, for mobile refrigeration equipment, the working method of its compressor has different greatly with non-moving refrigeration plant, compressor no longer includes fixing mains-supplied, generally depends on the engine running of vehicle itself, and engine is as power source, give compressor with transmission of power, the normal refrigeration of freezer needs the long-time running of vehicle motor, in case engine stops, system just can't realize refrigeration.Therefore, under vehicle parking or lower-speed state, refrigeration stops or being difficult to reach the refrigeration of needs.And in this state, start storehouse door carrying kinds of goods, owing to can't pass through mains-supplied under the mobile status, the work of air curtain apparatus can't realize especially, like this, brings difficulty can for the fresh-keeping storing and transporting of food.
The utility model content
In order to solve the problem that existing mobile refrigerating equipment air curtain apparatus can't use, the utility model proposes a kind of DC-driven mobile refrigeration equipment with air curtain, air curtain can stop hot-air to enter the storehouse body, is beneficial to food accumulating and energy-conservation.
The utility model adopts following technical scheme: the DC-driven mobile refrigeration equipment of band air curtain, comprise the heat-preservation warehouse body that is built-in with refrigeration system, and described refrigeration system comprises condenser, throttling arrangement, the evaporimeter that connects successively; Be connected with the DC frequency-changeable compressor that adopts second DC-voltage supply between described evaporimeter and the condenser, described DC frequency-changeable compressor, condenser, throttling arrangement, evaporimeter constitute cooling cycle system; Also be provided with electric power system in the described heat-preservation warehouse body, described electric power system comprises the dual power supply dc generator of exportable first DC voltage and described second DC voltage, the storage battery that adopts second DC voltage to charge, described dual power supply dc generator provides power by vehicle motor, and its first dc voltage output end is the vehicle power charging; Described storage battery, dual power supply dc generator constitute two kinds of power supplys to the DC frequency-changeable compressor power supply, be connected with power-supply controller of electric between described storage battery, dual power supply dc generator and the DC frequency-changeable compressor, described power-supply controller of electric comprises at least can be realized moving under the slow-speed of revolution situation when vehicle motor, DC frequency-changeable compressor automatically switches to the storage battery power supply by the power supply of dual power supply dc generator, when vehicle motor moves under the rated speed situation, DC frequency-changeable compressor is automatically switched to the power supply handover module of dual power supply dc generator power supply by the storage battery power supply.
Described DC-driven mobile refrigeration equipment also comprises the air curtain apparatus that the gas curtain that stops that hot gas enters is provided to heat-preservation warehouse body, first dc voltage output end of described dual power supply dc generator and vehicle power selectively constitute the air curtain power supply to the air curtain apparatus power supply, the connection line of this air curtain power supply and air curtain apparatus is provided with travel switch, and the storehouse door that the trip switch is installed in heat-preservation warehouse body opens and closes on the path.
Preferably, described first DC voltage is 24V.
Described second DC voltage is 60V.
Preferably, described throttling arrangement is an expansion valve.This expansion valve can be an electronic expansion valve, also can be common balanced type expansion valve.
Technical conceive of the present utility model is: to DC-driven mobile refrigeration equipment air curtain apparatus is installed, the power supply of air curtain apparatus is selectively provided by dual power supply dc generator and storage battery, and the travel switch of air curtain apparatus is installed on the path of storehouse door keying.When the Ku Men of refrigeration plant opens, the storehouse door touches travel switch, and the air curtain apparatus that is installed in door place, storehouse starts, and produces gas curtain, stops hot-air to enter, and when cargo handling finishes, Ku Men closes, and touches travel switch once more, and air curtain apparatus is closed.When vehicle operating, first dc voltage output end by the dual power supply dc generator is powered to air curtain apparatus, this moment, first dc voltage output end of dual power supply generator charged to vehicle power simultaneously, when vehicle stops, then power to air curtain apparatus by the vehicle power that has charged, to guarantee that air curtain apparatus can be worked under the vehicle start and stop state.
The principle of refrigeration plant electric power system specifically is described below: the refrigeration system of mobile refrigeration equipment adopts DC frequency-changeable compressor, electric power system power supply by the correspondence design, this electric power system comprises the dual power supply dc generator that can export first DC voltage and second DC voltage, first DC voltage is vehicle-mounted electricity consumption power devices, second DC voltage is the DC frequency-changeable compressor power supply, also is the storage battery charging simultaneously; Preferred first DC voltage is 24V, and second DC voltage is 60V.This dual power supply dc generator has been declared utility model: application number 200920200932.5, this dual power supply dc generator is to improve to form on the basis of the former excitation-type generator of vehicle, also be to provide power by vehicle motor, therefore, the speed of service of vehicle motor can influence the power supply of dual power supply dc generator, when the speed of service of vehicle motor low, the electricity shortage of dual power supply dc generator possibility, in order to provide direct current compressor comparatively stable voltage, be necessary under vehicle motor slow-speed of revolution ruuning situation, the power supply of dual power supply dc generator is switched to the storage battery power supply; Therefore, between described storage battery, dual power supply dc generator and DC frequency-changeable compressor, be connected power-supply controller of electric, described power-supply controller of electric comprises the power supply handover module at least, this module can realize moving under the slow-speed of revolution situation when vehicle motor, DC frequency-changeable compressor automatically switches to the storage battery power supply by the power supply of dual power supply dc generator, when vehicle motor moves under rated speed (surpass the set rotating speed) situation, DC frequency-changeable compressor automatically switches to the power supply of dual power supply dc generator by the storage battery power supply.This power supply handover module can be realized the automatic switchover of vehicle motor power supply under the slow-speed of revolution and two kinds of situations of rated speed by detecting dual power supply dc generator voltage change and then calculate the travel speed of described vehicle motor under different rotating speeds.
The compressor of the utility model refrigeration system adopts DC frequency-changeable compressor, and by powered by direct current, mainly by vehicle-mounted dual power supply generator powered, auxiliary storage battery is as stand-by power supply for this direct current; This dual power supply generator provides power by vehicle motor, and when the vehicle motor stall or the slow-speed of revolution, the dual power supply generator is not powered or electricity shortage, then transfers the storage battery power supply by having charged, like this, realizes that vehicle stops, travel condition all can be freezed.Because the compressor of the utility model refrigeration system is not limited to traditional mechanically operated vehicle motor as power source; but be provided with storage battery as stand-by power supply; therefore refrigeration no longer is subjected to the restriction of vehicle start and stop; by the power supply handover module in the power-supply controller of electric; realize under vehicle low engine speed such as the of short duration parking of vehicle are short of power situation; automatically switch to the storage battery power supply; when Vehicle Speed reaches rated speed when (surpass and set rotating speed); use the power supply of dual power supply dc generator again; like this; both guaranteed uninterrupted power supply to DC frequency-changeable compressor; make refrigeration stablize the restriction that no longer is subjected to vehicle start and stop or time of engine low speed; the kinetic equation loss that vehicle produces because of the running of refrigeration plant also can reduce minimum, the oil consumption of having saved vehicle to a great extent.Its design principle is also comparatively simple, need not to increase on vehicle sensing equipment.
The beneficial effects of the utility model are: (1) provides a kind of mobile refrigeration equipment with air curtain, and air curtain can stop hot-air to enter the storehouse body, is beneficial to food accumulating and energy-conservation; (2) power-supply controller of electric can ensure to the DC frequency-changeable compressor uninterrupted power supply according to existing environment automatic switchover power supply, and refrigeration stability no longer is subjected to the restriction of vehicle start and stop or time of engine low speed.
Description of drawings
Fig. 1 is the appearance assumption diagram of the utility model embodiment.
Fig. 2 is the refrigeration system schematic diagram of the utility model embodiment.
Fig. 3 is the electric power system schematic diagram of the utility model embodiment.
Fig. 4 is the power supply the principle figure of air curtain apparatus.
Fig. 5 is the schematic diagram of the dual power supply dc generator of utility model embodiment.
Fig. 6 is the schematic diagram of the power-supply controller of electric of the utility model embodiment.
Fig. 7 is the schematic diagram of the generator charging current limliting module of power-supply controller of electric.
Fig. 8 is the power supply handover module of power-supply controller of electric and the complete schematic of generator excitation voltage regulating module.
Fig. 9 is the schematic diagram of vacuum speed enhancing apparatus.
The specific embodiment
With reference to Fig. 1-9: the DC-driven mobile refrigeration equipment of band air curtain, comprise the heat-preservation warehouse body 16 that is built-in with refrigeration system, described refrigeration system comprises DC frequency-changeable compressor 1, condenser 2, throttling arrangement 8, the evaporimeter 9 that circulation successively connects; Described DC frequency-changeable compressor 1 is the DC frequency-changeable compressor of DC60V power supply; In the present embodiment, described throttling arrangement 8 is preferably electronic expansion valve, certainly, also can adopt common balanced type expansion valve.Also be provided with electric power system in the described heat-preservation warehouse body 16, described electric power system comprises the dual power supply dc generator 31 of exportable 24V first DC voltage and 60V second DC voltage, the storage battery 33 that adopts 60V second DC voltage to charge, described dual power supply dc generator 31 provides power by vehicle motor, its first dc voltage output end is the charging of 24V vehicle power, and the 24V vehicle power then is vehicle-mounted electricity consumption power devices; Two kinds of power supplys that described storage battery 33, dual power supply dc generator 31 constitute DC frequency-changeable compressor 1 power supply are connected with power-supply controller of electric 5 between described storage battery 33, dual power supply dc generator 31 and the DC frequency-changeable compressor 1.The vehicle-mounted consumer here is meant for example consumer of car air-conditioner, refrigerator, sound equipment, ornament lamp or the like.
Described power-supply controller of electric 5 comprises can be realized moving under the slow-speed of revolution situation when vehicle motor, DC frequency-changeable compressor 1 automatically switches to storage battery 33 power supplies by 31 power supplies of dual power supply dc generator, when vehicle motor moves under the rated speed situation, DC frequency-changeable compressor 1 is automatically switched to the power supply handover module 51 of dual power supply dc generator 31 power supplies by storage battery 33 power supplies.Described power supply switches 341 of moulds by detecting dual power supply dc generator 31 voltage change and then calculate the travel speed of described vehicle motor under different rotating speeds, realizes the automatic switchover of vehicle motor power supply under the slow-speed of revolution and two kinds of situations of rated speed.
Described DC-driven mobile refrigeration equipment also comprises the air curtain apparatus F that the gas curtain that stops that hot gas enters is provided to heat-preservation warehouse body 16, first dc voltage output end of described dual power supply dc generator G and vehicle power P selectively constitute the air curtain power supply to air curtain apparatus F power supply, the connection line of this air curtain power supply and air curtain apparatus F is provided with travel switch ST, and the storehouse door that the trip switch S T is installed in heat-preservation warehouse body 16 opens and closes on the path.When the Ku Men of refrigeration plant opens, the storehouse door touches travel switch ST, and the air curtain apparatus F that is installed in door place, storehouse starts, and produces gas curtain, stops hot-air to enter, and when cargo handling finishes, Ku Men closes, and touches travel switch ST once more, and air curtain apparatus F closes.When vehicle operating, give air curtain apparatus F power supply by first dc voltage output end of dual power supply dc generator G, this moment, first dc voltage output end of dual power supply generator G was given vehicle power P charging simultaneously, when vehicle stops, then give air curtain apparatus F power supply by the vehicle power P that has charged, to guarantee that air curtain apparatus F can work under the vehicle start and stop state.
The power supply the principle figure of air curtain apparatus F is referring to Fig. 4, dual power supply generator G obtains 24V first DC voltage by the D7 halfwave rectifier, this 24V first dc voltage output end is given air curtain apparatus F power supply on the one hand, return 24V vehicle power P power supply on the other hand, and the vehicle power circuit that is connected with K switch 2 is powered to air curtain apparatus also.When the vehicle launch engine running, by the dual power supply dc generator G generating that engine drove, at this moment its 24V first DC voltage is directly given air curtain apparatus F power supply, when vehicle stops, dual power supply dc generator G does not generate electricity, but Closing Switch K4 at this moment, and air curtain apparatus F is by 24V vehicle power P power supply, but, realized all operate as normal of vehicle start and stop state air curtain apparatus F.
Described power-supply controller of electric 5 also comprises except that comprising above-mentioned power supply handover module 51: generator charging current limliting module 52, and can avoid storage battery 33 when load current is excessive, described vehicle motor and dual power supply dc generator 31 to be caused overload and damage.
Generator excitation voltage regulating module 53, be used under the vehicle motor different rotating speeds situation with the Control of Voltage of second dc voltage output end of dual power supply dc generator 31 in 56V ~ 62V scope.
Under-voltage speed-raising module 54, this module is by installing additional on vehicle in order to improve the vacuum speed enhancing apparatus 56 of vehicle motor rotating speed, prevent that the long-term low speed of vehicle (setting rotating speed less than the dual power supply dc generator) running from causing storage battery 33 power shortages, with this, thereby dual power supply dc generator 31 can give storage battery 33 chargings in rated speed work.
Described power-supply controller of electric 5 also is included in the commercial power charged module 55 that can cut off 31 power supplies of dual power supply dc generator when civil power inserts automatically and change mains-supplied over to, described commercial power charged module 55 comprises electric main is converted into the Switching Power Supply VC that the 60V DC voltage is given described storage battery charging, the 60V dc voltage output end of described Switching Power Supply VC is connected in parallel to DC relay KM and storage battery 33, and the normally-closed contact K1 of described DC relay KM is connected in the supply line of dual power supply dc motor magnet exciting coil F.Therefore be under the generating state at electric generator of vehicle 31, when electric main inserts, make DC relay KM energising, the normally-closed contact K1 that DC relay KM is connected in the supply line of dual power supply dc generator magnet exciting coil F can disconnect, 31 generation outages of dual power supply dc generator, it is storage battery 33 chargings that civil power then changes into the 60V DC voltage by Switching Power Supply VC, and storage battery 33 is DC frequency-changeable compressor 1 power supply of refrigeration system again.
Present embodiment specifically is described below: with reference to Fig. 5: dual power supply dc generator 31(has declared utility model: ZL200920200932.5), its effect is when providing the 24V power supply for consumer common on the haulage vehicle, also, avoided needing to install the problem of two costs that generator faced and maintenance for DC-driven mobile refrigeration equipment provides a kind of 60V power supply.This generator is to improve to form on the basis of the former excitation-type generator of vehicle, is adopting common electricity generator stator core basis by coiling A phase A1 winding in parallel, A2 winding, B phase B1 winding, B2 winding, C phase C1 winding and C2 winding; Two windings head and the tail three-phase terminals (a b c x y z) with A1, A2 winding B1, B2 winding C1, each terminal of C2 winding after end to end are output as+the 60v power supply through three groups of bridge rectifiers.Draw (u v w) with being output as behind three single diode rectifications+the 30v power supply with A1, A2 winding B1, B2 winding C1, the end to end place tap of C2 winding terminal.When the dual power supply dc generator was in normal power generation, this equipment can be used as dependent mobile refrigeration equipment and uses.
With reference to Fig. 6-8: power-supply controller of electric 5 comprises power supply handover module 51, generator charging current limliting module 52, generator excitation voltage regulating module 53, under-voltage speed-raising module 54 and commercial power charged module 55, generator charging current limliting module 52, generator excitation voltage regulating module 53 solves the charging current that may run into respectively in running excessive, the problem of dual power supply dc generator 31 overtensions, the effect of under-voltage speed-raising module 54 is, running into traffic congestion, the situation that the time of staying such as shipment are long, and when not having civil power as power supply, make the storage battery power shortage cause damage for avoiding the storage battery electric weight to use up, guarantee the normal operation of refrigeration plant simultaneously, increase under-voltage speed-raising module 54.
Commercial power charged module 55, specifically, be provided with Switching Power Supply VC, when the electric main of Switching Power Supply VC and 220V/380V is plugged into, electric main is converted into the direct current of DC60V, the 60V direct current of Switching Power Supply VC output is on the one hand to storage battery 33 chargings, make DC relay KM energising simultaneously, normally-closed contact K1 disconnects like this, cut off the supply line of dynamo field coil F, the kinetic equation loss of avoiding dual power supply dc generator 31 work to be produced also prevents to burn power-generating equipment for vehicle under the situation that Switching Power Supply VC damages simultaneously.So, realized under the electric main access situation, cut off dual power supply dc generator 31 power supply automatically, and electric main to change into the 60V direct current by Switching Power Supply be storage battery 33 chargings, be DC powered mobile refrigerating power devices simultaneously.
Heavy-duty diode D1 is set in the supply line of Switching Power Supply VC, avoids under the situation of civil power disconnection, relay K M works on owing to afterflow.When civil power disconnects, under the situation of not having other power supply units, DC-driven mobile refrigeration equipment is by storage battery 33 power supplies.
In the vehicle driving process, output DC24V and DC60V double loop power supply under the situation of dual power supply dc generator 31 normal power generation, for providing the 24V power supply, the consumer of vehicle is storage battery 33 chargings simultaneously, the bridge heap that second DC voltage of dual power supply dc generator 31 outputs is made up of by 4 diode D3-D6 alternating current carries out rectification and obtains, first DC voltage of its output is obtained by diode D7 rectification by alternating current, because the power of dual power supply dc generator 31 is limited, when DC-driven mobile refrigeration equipment uses storage battery after 33 long periods, when re-using dual power supply dc generator 31 and charging, dual power supply dc generator 31 need be powered to refrigeration plant, need again storage battery 33 chargings, charging current is more than 2 times of dual power supply dc generator rated power often, the dual power supply dc generator overload operation occurs easily and damages, and is also bigger to the vehicle body dynamic effect.So in power-supply controller of electric 5, installed generator charging current limliting module 52 additional, this module principle figure is referring to Fig. 7, constitute by pulse width modulator A ', driver Aa, oscillating circuit C1+R6, FET VT1, voltage-stabiliser tube WD, pulse width modulator A ' has relatively high expectations to voltage, therefore needs mu balanced circuit to guarantee the supply voltage that it is comparatively stable.When dual power supply dc generator 31 is not worked, storage battery 33 uses as power supply, the negative pole of consumer is got back to the negative pole of storage battery 33 by heavy-duty diode D1, when 31 work of dual power supply dc generator, 33 in storage battery is as consumer, dual power supply dc generator 31 gives storage battery 33 chargings, and simultaneously for DC-driven mobile refrigeration equipment provides power supply, the negative pole of dual power supply dc generator 31 is as the benchmark negative pole of this circuit at this moment.The charging current loop of storage battery 33 negative poles surpasses when setting electric current, current signal falls stream and current signal is transferred to pulse width modulator A ' by resistance R 5, pulse width modulator is by high-frequency signal of oscillating circuit R6+C1 output, signal obtains a bigger drive current by controller Aa, thereby control FET T1 carries out break-make, then disconnect when electric current surpasses the setting electric current, be lower than and set then closure of electric current, thereby realize the function of charging current Current limited Control.
The voltage of dual power supply dc generator 31 is to raise along with the increase of vehicle motor rotating speed, then can have influence on the performance of consumer when overtension, and vehicle is idle or when running into the of short duration situation that stops to advance, 1/3 of the not enough specified electric quantity of dual power supply dc generator electric weight, can't satisfy the power demands of mobile refrigeration equipment and storage battery, therefore when low speed such as advances at the situation of generator electric weight deficiency, need in time the magnet exciting coil of generator is disconnected, prevent the generator overload and damage.This power-supply controller of electric just relates to excitation voltage regulating module 53 and power supply handover module 51.Describe as follows with reference to Fig. 8: this circuit is made up of critical pieces such as control chip E1, resistance R 1, R2, R3, sustained diode 9, FET T2.
Power switch K2 opens and connects full car power supply circuits, through providing power supply for control chip E1 after resistance R 2 step-downs.Control chip E1, the voltage signal that provides by R1, R3 carries out break-make control to dynamo field coil F negative pole, to obtain comparatively stable supply voltage, reduces the vehicle loss simultaneously.
When the voltage of the too high generator of generator speed surpasses 62V, when control chip E1 is higher than setting value by R1 acquisition voltage signal, output signal to the G utmost point of FET T2, with the negative pole disconnection of dynamo field coil F, play the effect of rationing the power supply and pressing.Dynamo field coil F residual flux is crossed continuous current circuit and is got back to dynamo field coil F release at this moment, plays the effect of a voltage stabilizing simultaneously.
When vehicle is in that low speed is advanced or during halted state, dual power supply dc generator 31 rotating speeds are lower than 2200 to be changeed, when the voltage of dual power supply dc generator 31 outputs is lower than 20V and 42V respectively, dual power supply dc generator 31 can't satisfy the consumer needs, when control chip E1 is lower than setting value by R3 acquisition low voltage signal, output signal to the G utmost point of FET T2.Dynamo field coil F is disconnected, 31 generation outages of dual power supply dc generator, refrigeration system is carried out running work by storage battery 33.And when the lifting of automobile gait of march, dual power supply dc generator 31 reaches certain rotating speed, control chip E1 goes up the voltage signal that obtains the R3 end and is higher than setting value, then output current signal is given the G utmost point of FET T2, the negative pole of dynamo field coil F is connected, and dual power supply dc generator 31 restarts generating.
Dual power supply dc generator 31 adopts two-wire winding in parallel, the voltage rise and fall are synchronous regime substantially, therefore from versatility and cost consideration, the reference voltage of generator excitation voltage regulating module 53 and power supply handover module 51 detects with the 24V voltage of dual power supply dc generator 31.
In the running of DC-driven mobile refrigeration equipment, can run into traffic congestion, what the time of staying such as shipment were long can not the expectation situation exist, and when not having civil power as power supply, make the storage battery power shortage cause damage for avoiding the storage battery electric weight to use up, simultaneously for guaranteeing the normal operation of refrigeration system, need to increase the vacuum speed enhancing apparatus 56 that improves the vehicle motor rotating speed, cooperate the speed enhancing apparatus of vehicle itself to use, in order to be lower than at the storage battery electric weight certain the setting value after, automatically improve engine speed, obtaining dual power supply dc generator 31 required rotating speed and voltage, for storage battery and refrigeration system provide power supply.This device generally includes vacuum solenoid KM2, describes with reference to Fig. 9: this module is made up of elements such as under-voltage speed-raising chip E2, resistance R 7, mu balanced circuit WD2, FET T3, vacuum solenoid KM2.
The DC voltage of 60V obtains the voltage of 5V by mu balanced circuit WD2, for under-voltage speed-raising chip E2 provides power supply, the running voltage of refrigeration system detects in real time by R7 resistance, when supply voltage is lower than 40V, under-voltage speed-raising chip E2 passes to FET T3 with current signal, connect the negative pole of the vacuum solenoid KM2 on the vehicle, the vehicle motor rotating speed increases, dual power supply dc generator 31 normal power generation.
Guarantee the steady running of consumer, under-voltage speed-raising chip E2 receives behind the under-voltage signal D utmost point and the S utmost point of FET T3 and connects immediately, and voltage is returned to normal value and also can't disconnects, by the time just can disconnect behind the power-off, waits for next under-voltage signal.Simultaneously, dual power supply dc generator DC60V and DC24V are public negative pole.
This power-supply controller of electric 5 can be discerned under 220/380V AC power access situation automatically; cut off power-generating equipment for vehicle; in vehicle low speed or the power supply of halted state automatic switchover storage battery; be at vehicle under the sufficient situation of power such as high speed and charge for storage battery 33 simultaneously for the refrigeration system power supply by dual power supply dc generator 31 automatically; when storage battery 33 voltages are lower than the protection value; and dual power supply dc generator 31 does not reach when setting rotating speed; can improve dual power supply dc generator 31 rotating speeds automatically again; realize Based Intelligent Control; guaranteeing to reduce the oil consumption of haulage vehicle again under the refrigeration system normal operation situation.
Direct current drives mobile refrigeration equipment, can arbitrarily be placed in haulage vehicle and other vehicles position in addition as a kind of mobile freezing equipment that can realize that independent and non-independence and freedom is switched, change the power supply that just can realize the dual power supply dc generator by the former excitation generator to automobile simply in the vehicle transport process, low speed is advanced or of short duration parking can realize independent operating when vehicle is in; In addition, after unloading vehicle or the place of civil power is arranged, can also carry out work and charging, can realize the purpose of civil power work and charging by following scheme by common civil power.
Need to prove, in the refrigeration system of the present utility model, DC frequency-changeable compressor 1, condenser 2, throttling arrangement 8, evaporimeter 9 are just as four necessary parts, in the refrigeration system of reality, except that above-mentioned four big parts, some auxiliary equipment also usually are set, in Fig. 2, between condenser 2 and throttling arrangement 8, also be connected with the magnetic valve 6 of fluid reservoir 4, device for drying and filtering 15, control defrosting beginning, be parallel with defroster duct between the output of the input of evaporimeter 9 and compressor 1, defroster duct is provided with check valve 15 and defrosting magnetic valve 14.Also be connected with gas-liquid separator 11 between evaporimeter 9 and the DC frequency-changeable compressor 1.Overheated for preventing DC frequency-changeable compressor 1, on the bypass line between device for drying and filtering 15 and the throttling arrangement 8, be provided with hydrojet cooling magnetic valve 7, its effect is that condensed liquid refrigerant is carried out throttling by capillary 12, be ejected into the interior evaporation of cylinder of compressor, being used for controlling compressor temperature by the way of sacrificing certain cold can be not overheated.Described condenser 2, evaporimeter 9 be supporting respectively condensation fan 3, evaporation fan 10.Also be provided with easy appearance plug formula relief valve 13 in the refrigeration system, the cold-producing medium that pressure in the system can be surpassed the pipeline limit is discharged in the air protection personnel and device security.The auxiliary equipment of above-mentioned cold-producing medium has been existing mature technology, no longer describes in detail here.
The foregoing description only is enumerating the utility model technical conceive way of realization; protection domain of the present utility model is not limited only to the foregoing description, and protection domain of the present utility model may extend to those skilled in the art according to the thinkable equivalent technologies means of technical conceive of the present utility model.
Claims (5)
1. the DC-driven mobile refrigeration equipment of band air curtain comprises the heat-preservation warehouse body (16) that is built-in with refrigeration system, and described refrigeration system comprises condenser (2), throttling arrangement (8), the evaporimeter (9) that connects successively; It is characterized in that: be connected with the DC frequency-changeable compressor (1) that adopts second DC-voltage supply between described evaporimeter (9) and the condenser (2), described DC frequency-changeable compressor (1), condenser (2), throttling arrangement (8), evaporimeter (9) constitute cooling cycle system; Described heat-preservation warehouse body also is provided with electric power system in (16), described electric power system comprises the dual power supply dc generator (31) of exportable first DC voltage and described second DC voltage, the storage battery (33) that adopts second DC voltage to charge, described dual power supply dc generator (31) provides power by vehicle motor, and its first dc voltage output end is the vehicle power charging; Described storage battery (33), dual power supply dc generator (31) constitutes two kinds of power supplys to DC frequency-changeable compressor (1) power supply, described storage battery (33), be connected with power-supply controller of electric (5) between dual power supply dc generator (31) and the DC frequency-changeable compressor (1), described power-supply controller of electric (5) comprises at least can be realized moving under the slow-speed of revolution situation when vehicle motor, DC frequency-changeable compressor (1) automatically switches to storage battery (33) power supply by dual power supply dc generator (31) power supply, when vehicle motor moves under the rated speed situation, DC frequency-changeable compressor (31) is automatically switched to the power supply handover module (51) of dual power supply dc generator (31) power supply by storage battery (33) power supply;
Described DC-driven mobile refrigeration equipment also comprises the air curtain apparatus (F) that the gas curtain that stops that hot gas enters is provided to heat-preservation warehouse body (16), first dc voltage output end of described dual power supply dc generator (G) and vehicle power (P) selectively constitute the air curtain power supply to air curtain apparatus (F) power supply, the connection line of this air curtain power supply and air curtain apparatus (F) is provided with travel switch (ST), and the storehouse door that the trip switch (ST) is installed in heat-preservation warehouse body (16) opens and closes on the path.
2. the DC-driven mobile refrigeration equipment of band air curtain as claimed in claim 1, it is characterized in that: described power supply handover module (51) is realized the automatic switchover of vehicle motor power supply under the slow-speed of revolution and two kinds of situations of rated speed by detecting dual power supply dc generator (31) voltage change and then calculate the travel speed of described vehicle motor under different rotating speeds.
3. the DC-driven mobile refrigeration equipment of band air curtain as claimed in claim 1 is characterized in that: described first DC voltage is 24V.
4. as the DC-driven mobile refrigeration equipment of the described band air curtain of one of claim 1-3, it is characterized in that: described second DC voltage is 60V.
5. the DC-driven mobile refrigeration equipment of band air curtain as claimed in claim 1 is characterized in that: described throttling arrangement (8) is an expansion valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205147921U CN201764770U (en) | 2010-09-02 | 2010-09-02 | Mobile refrigeration equipment driven by direct current (DC) with air curtain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205147921U CN201764770U (en) | 2010-09-02 | 2010-09-02 | Mobile refrigeration equipment driven by direct current (DC) with air curtain |
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| Publication Number | Publication Date |
|---|---|
| CN201764770U true CN201764770U (en) | 2011-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205147921U Expired - Lifetime CN201764770U (en) | 2010-09-02 | 2010-09-02 | Mobile refrigeration equipment driven by direct current (DC) with air curtain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201764770U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI557377B (en) * | 2014-06-04 | 2016-11-11 | Qing-Ke Zhang | Portable DC air conditioner |
| CN109636267A (en) * | 2018-11-13 | 2019-04-16 | 上海可瑞视冷链科技有限公司 | A kind of dual power supply management system of mobile cold chain shelter |
-
2010
- 2010-09-02 CN CN2010205147921U patent/CN201764770U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI557377B (en) * | 2014-06-04 | 2016-11-11 | Qing-Ke Zhang | Portable DC air conditioner |
| CN109636267A (en) * | 2018-11-13 | 2019-04-16 | 上海可瑞视冷链科技有限公司 | A kind of dual power supply management system of mobile cold chain shelter |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110316 |