CN2389334Y

CN2389334Y - Ac/dc freezer

Info

Publication number: CN2389334Y
Application number: CN 99243619
Authority: CN
Inventors: 隗继鑫
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-08-24
Filing date: 1999-08-24
Publication date: 2000-07-26
Anticipated expiration: 2009-08-24

Abstract

The utility model relates to an ac/dc freezer. The utility model is formed by the method that one end of the freezer body is fixedly provided with a controller changing with an electric conversion, an accumulator, and a compressor. The side wall of the freezer body is fixedly provided with a condenser, a dry filter and an evaporator, and the top of the freezer body is provided with an open door in a pumping type. After an input end of power supply is connected with the controller changing with an electric conversion, the input end of power supply is connoted with the compressor, and the controller is also connected with the accumulator. The output end of the compressor is connected with the condenser, the dry filter, and the evaporator. The freezer has the advantage of convenient operation, and can use 220V ac power supply as well as use dc power supply and can ensure constant cooling temperature; thus, the freezer is caused to fully play a function in the commercial sale activities of cooling drink and cold meal.

Description

The cofunctional refrigerator-freezer of AC and DC

The utility model belongs to a kind of refrigerator-freezer, the cofunctional refrigerator-freezer of particularly a kind of AC and DC.

At present, commerce all adopts compressor formula structure with refrigerator-freezer, all need it to be powered with the power supply of alternating current 220V, therefore, make its refrigerator-freezer not carry out business activity away from the 220V power supply, the high mountain in tourism area for example, the lake, the sea, bustling street is not owing to there is the 220V power supply, just can not use refrigerator-freezer to sell cold drink, cold food, can only be to contain cold drink, use the natural ice cooling in the chest of cold food, therefore can not guarantee constant chilling temperature, often make cold food occur melting phenomenon, thereby influenced cold drink, the sale of cold food, also hindered refrigerator-freezer summer of sweltering heat at cold drink, the bigger effect of performance during cold food is sold.

The purpose of this utility model is to overcome weak point of the prior art and provides a kind of AC and DC that can use the 220V AC power can use dc source cofunctional refrigerator-freezer.

The purpose of this utility model can realize by following measure:

The structure of the cofunctional refrigerator-freezer of AC and DC is that the end at casing (1) is installing electricity conversion transform controller (2), battery (3) and compressor (4), on a sidewall of casing, installing condenser (5), installing device for drying and filtering (6) and evaporimeter (7) on another sidewall of casing, odd test open the door (8) is being adorned at the top of casing.The input of power supply (9) connects electricity conversion transform controller, and the output of controller is connected with the input of compressor, and controller is also connecting battery.The output of compressor connects the input of condenser, and the output of condenser is connected with evaporimeter by behind the device for drying and filtering, and evaporimeter is connected with compressor again.

The electrical connection of electricity conversion transform controller is that+Vc is by tetrad change-over switch K _1-1Connection is by resistance R ₁, diode D ₁, triode VT ₁, relay J ₁The on-off circuit of forming, on-off circuit connects by resistance R ₂, LED ₁The storage battery working indicating of forming and by resistance R ₃, R ₄, triode VT ₂, buzzer RTD, integrated circuit Ic ₁The under-voltage warning circuit of forming, the under-voltage warning circuit connects by resistance R ₅, voltage-stabiliser tube DW ₁, capacitor C ₁The mu balanced circuit of forming, mu balanced circuit connects by resistance R ₆, R ₇, R ₈, diode D ₂, D ₃, capacitor C ₂, C ₃With integrated circuit Ic ₂The voltage oscillating circuit of forming, voltage oscillating circuit connects by LED ₂, diode D ₄, D ₅, D ₆, resistance R ₉, R ₁₀, R ₁₁, R ₁₂, R ₁₃, R ₁₄, triode VT ₉, VT ₃, VT ₄The voltage of forming promotes circuit, and voltage promotes circuit and connects by VT ₅, VT ₆The power amplifier of forming is connecting the L of transformer T in the back of power amplifier ₁, L ₂With voltage-stabiliser tube DW ₂, DW ₃, the former limit of transformer T is by tetrad change-over switch K _1-4, button SB ₃And relay J ₁Normally opened contact JK ₁After connect the alternating current 220V power supply, the L of transformer ₁, L ₂Two ends connecting diode D ₇, D ₈And resistance R ₁₅, R ₁₆, LED ₃The rectification current-limiting circuit, and with by resistance R ₁₈, R ₁₉, voltage-stabiliser tube DW ₄, diode D ₉, resistance R ₁₇, triode VT ₇, VT ₈, relay J ₂, diode D ₁₀, voltage-stabiliser tube DW ₅, diode D ₁₁The automatic charging voltage test circuit of forming.

The utility model compared with prior art has following advantage:

1, this refrigerator-freezer is easy to use, is not subjected to power limitations, both can use the 220V AC power, can use dc source again.

2, refrigerator-freezer is played one's part to the full in business activity, no matter be high mountain, lake, sea, remote mountain forest, or busy street can use refrigerator-freezer to carry out the sale of cold drink, cold food.

Even if 3, this refrigerator-freezer also can guarantee constant chilling temperature when using dc source, cold food is melted, can guarantee the sale of cold food.

The drawing of accompanying drawing is described as follows:

Fig. 1 is the structural representation of the cofunctional refrigerator-freezer of the utility model AC and DC;

Fig. 2 is the cofunctional refrigerator-freezer electrical schematic of the utility model AC and DC;

Fig. 3 is the cofunctional refrigerator-freezer electricity of the utility model AC and DC conversion transform controller circuit theory diagrams.

Below in conjunction with accompanying drawing the utility model embodiment is described in further detail:

The structure of the cofunctional refrigerator-freezer of AC and DC is that the end at casing (1) is installing electricity conversion transform controller (2), battery (3) and compressor (4), on a sidewall of casing, installing condenser (5), installing device for drying and filtering (6) and evaporimeter (7) on another sidewall of casing, odd test open the door (8) is being adorned at the top of casing.The input of power supply (9) connects electricity conversion transform controller, and the output of controller is connected with the input of compressor, is also connecting battery on the controller.The output of compressor connects the input of condenser, and the output of condenser is connected with evaporimeter by behind the device for drying and filtering, and the output of evaporimeter is connected on the compressor.

The circuit connecting relation of electricity conversion transform controller is that the positive pole+Vc of battery is by tetrad change-over switch K _1-1Connect starting relay J ₁After meet triode VT ₁Emitter stage, VT ₁Base stage pass through resistance R ₁, diode D ₁Back and relay J ₁The other end and K _1-11 end connect VT ₁Colelctor electrode one road connecting resistance R ₂And LED ₁Back ground connection, another road connects buzzer RTD, resistance R ₃And R ₅An end, another termination triode VT of RTD ₂Colelctor electrode, VT ₂Grounded emitter, VT ₂Base stage meet integrated circuit Ic ₁3 pin, Ic ₁1 pin connecting resistance R ₃And R ₄An end, R ₄Other end ground connection, Ic ₁2 pin ground connection.Resistance R ₅The other end meet voltage-stabiliser tube DW respectively ₁, capacitor C ₁And resistance R ₆, R ₁₀An end, DW ₁And C ₁Other end ground connection.R ₅The other end also meet integrated circuit Ic ₂4 pin and 8 pin, Ic ₂7 pin connecting resistance R ₆The other end and resistance R ₇An end, R ₇Another termination Ic ₂6 pin and diode D ₃Negative pole, D ₃Positive pole meet Ic ₂2 pin and variable resistor R ₈A stiff end, R ₈Another stiff end pass through capacitor C ₂Back ground connection.Diode D ₂Positive pole meet Ic ₂7 pin, D ₂Negative pole meet Ic ₂2 pin.Ic ₂1 pin ground connection, 5 pin pass through capacitor C ₃Back ground connection.Ic ₂3 pin, one tunnel sending and receiving optical diode LED ₂, diode D ₄And resistance R ₉After meet triode VT ₉Base stage, another road is by diode D ₆And resistance R ₁₁After meet triode VT ₃Base stage, triode VT ₉Grounded emitter, its colelctor electrode connecting resistance R ₁₀The other end and meet diode D ₅And resistance R ₁₂After meet triode VT ₄Base stage.Triode VT ₃Emitter stage pass through resistance R ₁₃After meet triode VT ₅Base stage, VT ₃Colelctor electrode meet VT ₄Colelctor electrode and meet tetrad change-over switch K _1-21 end, VT ₄Emitter stage pass through resistance R ₁₄After meet triode VT ₆Base stage, triode VT ₅Emitter stage and VT ₆Emitter stage connect back ground connection, VT ₅Colelctor electrode meet diode D ₇Negative pole, voltage-stabiliser tube DW ₂Negative pole and the L of transformer T ₁One end, diode D ₇Positive pole one tunnel meet diode D ₈Positive pole, one road connecting resistance R ₁₅, R ₁₆An end, diode D ₈Negative pole meet triode VT ₆Colelctor electrode, voltage-stabiliser tube DW ₂Positive pole meet voltage-stabiliser tube DW ₃Positive pole, DW ₃Negative pole meet VT ₆Colelctor electrode and the L of transformer T ₂One end, the centre tap termination tetrad change-over switch K of transformer T _1-3Movable end, the former limit of transformer T is by tetrad change-over switch K _1-4, button SB ₃And relay J ₁Normally-closed contact JK ₁After connect the 220V AC power.Tetrad change-over switch K _1-23 terminating resistor R ₁₈With diode D ₉Positive pole, tetrad change-over switch K _1-33 ends pass through capacitor C ₄Back connecting resistance R ₁₅An end, R ₁₈Another termination voltage-stabiliser tube DW ₄Negative pole, DW ₄Positive pole meet triode VT ₇Base stage, resistance R ₁₉One termination VT ₇Base stage, another termination K switch _1-13 ends, VT ₇Colelctor electrode lead up to resistance R ₁₇After meet diode D ₉Negative pole, another road meets triode VT ₈Base stage, VT ₈Emitter stage meet D ₉Negative pole and relay J ₂Normally-closed contact JK ₂, VT ₈Colelctor electrode relay J in parallel ₂With diode D ₁₀After meet K _1-13 ends, voltage-stabiliser tube DW ₅Negative pole connect K switch _1-22 ends, DW ₅Positive pole by diode D ₁₁After meet K _1-13 ends, resistance R ₁₅, R ₁₆The other end pass through LED ₃After meet K _1-13 ends.

During use, when K _1-1When getting to 1 position, circuit enters direct current exchange conversion state.Relay J ₁Adhesive, JK ₁Normally-closed contact is opened and is shielded, and prevents that alternating current from entering.VT ₁Conducting, the rear portion circuit gets electric, Ic ₁1 pin through R ₃, R ₄Gained voltage decision circuitry voltage after the dividing potential drop, when ifs circuit voltage is reduced to certain value, Ic ₁3 pin conductings, buzzer RTD reports to the police.R ₅, DW ₁And C ₁The rear portion circuit is carried out voltage stabilizing.Ic ₂Obtain voltage-stabilized power supply Deng element and carry out 50H _ZVibration, its 3 pin output 50H _ZSquare wave.When 3 pin output high level, VT ₉Conducting, VT ₄End VT ₃Conducting, electric current is through D ₆, R ₁₁, VT ₃, R ₁₃Make VT ₅Conducting, electric current is through the L of transformer T ₁, VT ₅Get back to the storage battery negative pole.When 3 pin output low levels, VT ₃End VT ₂End, electric current is through R ₁₀, D ₅, R ₁₂Make VT ₄Conducting, then, electric current is through VT ₄, R ₁₄Make VT ₆Conducting, electric current is through the L of transformer T ₂, VT ₆Get back to the level negative pole.VT ₅, VT ₆Alternate conduction, end, behind transformer T, become the ac square wave of positive and negative symmetry, and by L ₃Boost and be 50H _ZThe 220V high pressure to accessory power outlet, makes compressor get electric work.

When K _1-1When getting to 2 position, the circuit each several part is not worked, but if any the input of 220V alternating current, as press SB ₃, then directly by civil power 220V power supply, compressor gets electric work to the rear portion electrical appliance.

When K _1-1When getting to 3 position, circuit enters charged state, J ₂The normally-closed contact conducting, voltage is through T transformation, D ₇, D ₈Sinusoidal ac is become half-wave DC electricity, C ₄Change the half-wave DC electricity into direct current stably, electric current is through J ₂Normally-closed contact JK ₂Storage battery positive pole, storage battery negative pole and R ₁₆, R ₁₅, LED ₃The current-limiting circuit of forming is got back to the dc source negative terminal.

When level was full of electricity, level voltage raise, DW ₄Be reversed puncture, VT ₇Conducting, VT ₈Conducting, J ₂Get electric adhesive, JK ₂Normally opened contact conducting, storage battery stop charging.In charging process, as press SB ₃Then refrigerator-freezer charges on one side, on one side operation.

Claims

1, the cofunctional refrigerator-freezer of a kind of AC and DC, its structure is that the end at casing (1) is installing compressor (4), installing condenser (5) on a sidewall of casing, installing device for drying and filtering (6) and evaporimeter (7) on another sidewall, the power supply input is by fast cold switch SB ₁, temperature switch SB ₂With connect compressor behind the starting relay J, the output of compressor connects condenser, the output of condenser connects evaporimeter after by device for drying and filtering, evaporimeter connects compressor again, it is characterized in that: the input at power supply is connecting the electricity conversion transform controller (2) that is packed in casing one end, and the output of controller passes through SB ₁, SB ₂Be connected with the input of compressor (4) behind the J, also connecting battery (3) on the controller.

2, according to the cofunctional refrigerator-freezer of the said AC and DC of claim 1, it is characterized in that: the circuit connecting relation of electricity conversion transform controller is that+Vc is by tetrad change-over switch K _1-1Connection is by resistance R ₁, diode D ₁, triode VT ₁, relay J ₁The on-off circuit of forming, on-off circuit connects by resistance R ₂, LED ₁The storage battery working indicating of forming and by resistance R ₃, R ₄, triode VT ₂, buzzer RTD, integrated circuit Ic ₁The under-voltage warning circuit of forming, the under-voltage warning circuit connects by resistance R ₅, voltage-stabiliser tube DW ₁, capacitor C ₁The mu balanced circuit of forming, mu balanced circuit connects by resistance R ₆, R ₇, R ₈, diode D ₂, D ₃, capacitor C ₂, C ₃With integrated circuit Ic ₂The voltage oscillating circuit of forming, voltage oscillating circuit connects by LED ₂, diode D ₄, D ₅, D ₆, resistance R ₉, R ₁₀, R ₁₁, R ₁₂, R ₁₃, R ₁₄, triode VT ₉, VT ₃, VT ₄The voltage of forming promotes circuit, and voltage promotes circuit and connects by VT ₅, VT ₆The power amplifier of forming is connecting the L of transformer T in the back of power amplifier ₁, L ₂With voltage-stabiliser tube DW ₂, DW ₃, the former limit of transformer T is by tetrad change-over switch K _1-4, button SB ₃And relay J ₁Normally opened contact JK ₁After connect the alternating current 220V power supply, the L of transformer ₁, L ₂Two ends connecting diode D ₇, D ₈And resistance R ₁₅, R ₁₆, LED ₃The rectification current-limiting circuit, and with by resistance R ₁₈, R ₁₉, voltage-stabiliser tube DW ₄, diode D ₉, resistance R ₁₇, triode VT ₇, VT ₈, relay J ₂, diode D ₁₀, voltage-stabiliser tube DW ₅, diode D ₁₁The automatic charging voltage test circuit of forming.