CN1648560A - Refrigerator - Google Patents

Abstract

This refrigerator comprises the door opening device 30 for opening the door by pressing a door face by projecting out a pressing member 37 when a driving source is energized, door opening switches 27a, 27b outputting a door opening signal and a door closing signal by detecting opening and closing states of the doors 20a, 20b, and a control means 50 for opening the door by energizing the door opening device 30 when driving signals are output from the door opening switches 27a, 27b under a condition that the door closing signals are output from the door switches 26a, 26b. The control means 50 cuts off the energization to the door opening device 30 after the lapse of a specific time from the output of the door opening signals from the door switches 26a, 26b.

Description

Refrigerator

Technical field

The present invention relates to have the refrigerator that stretches out the door opener that the storeroom door is opened that utilizes the pushing member.

Background technology

In recent years, there be the variation and the tendency that also maximizes of the amount of accommodating of dietetic life in refrigerator, and especially in the family expenses refrigerator, accommodating the rank that internal volume surpasses 400 liters becomes main flow, has the height of refrigerator body and the tendency that width dimensions also increases.

With this, the door of refrigerating chamber, refrigerating chamber and vegetable compartment also maximizes, especially at the inboard accommodation bag of the door of the big refrigerating chamber of storage, the height and the expansion of width dimensions and depth size also increase and have a tendency of accommodating a lot of food, door self is often also big and need big power for opening the door, for little women of strength or the problem that advanced age, the person existed burden to increase.

As the structure that addresses the above problem, in recent years, to have the hand switch operation that utilizes the user from base side stretch out that ejector pin pushes the shop front and the refrigerator of the door opening device of the electromagnet type that opens the door to market supply, done evaluation (for example, patent documentation 1) as the commodity that opening of opposite house do not need to bear.

As this door opener, when when being located at that the door open switch of face is operated in front of the door, carry out the energising of stipulated time to electromagnet, the pushing member is opened the door pushing from primary position with forwards stretching out, and will switch at the appointed time and disconnect and utilize the application of force of drawing in spring to be drawn into, become and utilize spring force to be back to the state of primary position.

Again, in the refrigerator of opposite opened door, considered to use single above-mentioned door opener and simultaneously to left and right door or to left and right door only with one-sided structure of opening the door (for example, patent documentation 2).

[patent documentation 1] Japan Patent spy opens the 2001-59675 communique

[patent documentation 2] Japan Patent spy opens the 2003-83673 communique

But, in the structure of the door opener of above-mentioned patent documentation 1, owing to be with the interior at the appointed time structure of supplying with to electromagnet of predefined voltage, so when the required power of opening the door being changed, exist and to open the door fully because of opening of door is weak or because of the too strong unfavorable condition that the food that is positioned in the accommodation bag is dropped etc. according to the mounting amount of closing a time, accommodation bag of door etc.

Again, according to the specification situation of refrigerator, for example the mounting amount and the cooling in the refrigerator of accommodation bag that is located in the door changes the required power of opening the door, and in the door opener of above-mentioned patent documentation 1,2, owing to be the structure that predefined voltage is supplied with to electromagnet at the appointed time, can not open the door fully because of opening of door is too weak or because of the too strong unfavorable condition that the food that is positioned in the accommodation bag is dropped etc. so exist.

Again, in opposite opened door refrigerator, only make that required power changes when opening the door to one-sided situation about opening and under the form of using the rotation demarcation strip, and in the past not the driving method of clamshell doors device study.

In addition, in the refrigerator of opposite opened door, can only a side door open switch be operated usually with left and right door only with one-sided occasion of opening the door, by the user when a side door opener is switched on, often also simultaneously the opposing party's door opener is operated.

This occasion, the source power supply of employed electric equipment products in kitchens such as refrigerator, electric oven, electric cooker, generally, owing to prevent that the automatic citrcuit bearker that flow through multiple current is made to sharing, so when using other electric equipment products, when both sides' door opener is switched on, might make this automatic citrcuit bearker action.

Such checking, do not carrying out in the past, and also imagine the situation of in the energising that the door opener of Xiang Yifang carries out, the opposing party's door open switch being operated or operating simultaneously according to user's actual conditions, study with regard to the action that is necessary the clamshell doors device.

Summary of the invention

The present invention considers the problems referred to above and makes, and its purpose is, although the refrigerator that also can open the door the most automatically when providing accommodation bag in refrigerator doors to be in load condition etc.

Again, another object of the present invention is to, no matter the refrigerator how behaviour in service that refrigerator is provided etc. can both open the door the most automatically.

Again, another purpose of the present invention is, is provided in the refrigerator of opposite opened door, the occasion of when the door opener of Xiang Yifang is switched on the opposing party's door open switch being operated or the occasion of operating simultaneously, do not flow through the refrigerator that too much electric current ground can open the door reliably.

Refrigerator of the present invention is characterized in that, has: the door that opens and closes the front openings portion that is located at the body storeroom freely; The pushing member is stretched out to be pushed and the door opener that opens the door the described shop front; Drive the door open switch of the driving signal of this door opener by user's operation output; Door opening state to described door detects and exports enabling signal and closes the door switch of gate signal, begin to switch in time under the state that closes gate signal from the output of this door switch, from described door open switch output drive signal, from utilizing after the described door switch output enabling signal to proceed energising through the stipulated time to door opener.

Refrigerator of the present invention is characterized in that, has: the left-hand door and the You Men that open and close the opposite opened of the front openings portion that is located at the body storeroom freely; The L.H.flapped door device and the R.H.flapped door device that utilize energising that its left and right door is pushed respectively and open the door; The L.H.flapped door switch and the R.H.flapped door switch of respectively the left and right opening door device being switched on by user's operation output drive signal; The load detection means that the load that applies during to the opening the door of described left and right door detects, to both sides or either party's door when opening the door, the load when utilizing described load detection means to be judged as to open the door opens the door the power of opening the door of described left and right opening door device when light with reducing.

Refrigerator of the present invention is characterized in that, has: the left-hand door and the You Men that open and close the opposite opened of the front openings portion that is located at the body storeroom freely; The L.H.flapped door device and the R.H.flapped door device that utilize energising that its left and right door is pushed respectively and open the door; The L.H.flapped door switch and the R.H.flapped door switch of respectively the left and right opening door device being switched on by user's operation output drive signal, during a side door opener is switched on, to the occasion that the opposing party's door open switch is operated, finish the back, begin the opposing party's door opener is switched on from energising to this door opener.

Adopt foregoing invention, according to the load condition of refrigerator doors during to being pulled away from of the magnetic packing ring that the required power of clamshell doors is changed significantly, specifically, one switches on to door opener surely when utilizing door switch output enabling signal, again, after not making the required power of opening the door carry out opening the door of bigger variation,, can the most suitably door be opened by will disconnecting to the power supply of door opener after will switching on the stipulated time.

Adopt foregoing invention, the load during according to the behaviour in service clamshell doors of refrigerator detects, owing to can suitably change the power of opening the door of door opener, so can the most suitably open the door.

Adopt foregoing invention, in the refrigerator of opposite opened door, even can provide the occasion of when the door opener of Xiang Yifang is switched on, the opposing party's door open switch being operated or the occasion of operating simultaneously, also do not flow through the refrigerator that too much electric current ground can open the door reliably.

Description of drawings

Fig. 1 is the time diagram of the action of expression door opener of the present invention.

Fig. 2 is the time diagram of the action of portion of expression left and right opening door of the present invention mechanism.

Fig. 3 is the time diagram of action of the door opener of the short occasion of expression minute of the present invention.

Fig. 4 is the time diagram of action of the door opener of the long occasion of expression minute of the present invention.

Fig. 5 is the stereogram of expression refrigerator of the present invention.

Fig. 6 is the stereogram of the refrigerator open state of presentation graphs 5.

Fig. 7 is the vertical view of the refrigerator of expression when left-hand door opened.

Fig. 8 is the vertical view of the refrigerator of expression when right door is opened.

Fig. 9 is the vertical view that is illustrated under the state that right door opens the refrigerator when left-hand door opened.

Figure 10 is a controlling party block diagram of the present invention.

Figure 11 is the longitudinal section of expression door opener of the present invention.

Figure 12 is the flow chart of the action of expression door opener of the present invention.

Figure 13 is the stereogram of expression refrigerator of the present invention.

Figure 14 is the stereogram of state behind the refrigerator open of expression Figure 13.

Figure 15 is the vertical view that is illustrated under the state that right door opens the refrigerator when left-hand door opened.

Figure 16 is a controlling party block diagram of the present invention.

Figure 17 is the flow chart of the action of expression door opener of the present invention.

The specific embodiment

Below, example of the present invention is described.Fig. 5 is the stereogram of expression refrigerator of the present invention, and Fig. 6 is the figure of the refrigerator open state of presentation graphs 5.In this Fig. 5, Fig. 6, in the refrigerator body 1 that constitutes by body of thermal insulating box as known configurations, by the switching chamber 5, the refrigerating chamber 6 that are sequentially set with refrigerating chamber 2, vegetable compartment 3, ice-making compartment 4, can switch from top to bottom to the internal temperature of multilayer, and with ice-making compartment 4 with switch chamber about 5 and setting side by side.

Front openings portion at above-mentioned refrigerating chamber 2, be provided with formation with two ends, the left and right sides pivot left-hand door 20a that prop up, so-called opposite opened door and right door 20b respectively, front separately at vegetable compartment 3, ice-making compartment 4, switching chamber 5 and refrigerating chamber 6 is respectively equipped with drawer type door 3a, 4a, 5a and 6a that storage container (not shown) is being connected.On the circumference of the rear side of left and right door 20a, 20b, magnetic packing ring 21a, 21b are installed, left and right door 20a, 20b become the structure that keeps blocking by this magnetic packing ring 21a, 21b to the flange part 1a of refrigerator body 1 absorption.In addition, though not shown, other door 3a, 4a, 5a and the circumference of the rear side of 6a on the magnetic packing ring also is installed.

Be formed with a pair of reinforcement 22a of portion, the 22b that extends up and down respectively in the inboard of magnetic packing ring 21a, 21b, on the 22a of this reinforcement portion, 22b, be provided with the accommodation bag 23a, the 23b that accommodate food.On the 22a of reinforcement portion of the left-hand door 20a relative, be provided with at the magnetic packing ring 21a, the 21b that close absorption left and right door under the state and with the gap between door and carry out inaccessible rotation demarcation strip 25 with right door 20b again.This rotates demarcation strip 25, and correspondingly making by the on-off action with left-hand door 20 slides in the groove of pin 1b on be formed at rotation demarcation strip 25 that is located at body top becomes the state of rotation.

Front face at left and right door 20a, 20b, L.H.flapped door switch 27a and R.H.flapped door switch 27b are installed, when pushing L.H.flapped door switch 27a, the enabling signal that left-hand door 20a is opened in output, when pushing R.H.flapped door switch 27b, the enabling signal that right door 20b is opened in output.In addition, when pushing L.H.flapped door switch 27a, also can export the enabling signal that right door 20b is opened.

Specifically, become the mechanical switch of microswitch etc. that to make the open type of ON when bulldozing operation left and right opening door switch 27a, the 27b and carry out built-in structure.In addition, also can make the structure of the optical profile type switch that utilizes the photoelectricity cutter or magnetic switch etc.

Shown in the vertical view of the refrigerator 1 when left-hand door 20a being opened, on the sidewall of the left and right sides of refrigerating chamber 2, be provided with respectively door switch 26a, 26b that the open and-shut mode to left and right door 20a, 20b detects as the expression of Fig. 7.This door switch 26a, 26b, when button 26 ' is reinforced the 22a of muscle portion, 22b pushing, regard that a 20a, 20b are closed door and gate signal (OFF state) is closed in output as, as door 20a, when 20b is opened, when the pushing of button is little by little decontroled, when button utilizes its spring force to project to a certain degree, regard a 20a, 20b as and be opened and be the state (ON state) of exporting enabling signal.

On the top plate portion of refrigerator body 1, the door opener 30 that the left-hand door 20a that makes refrigerating chamber 2 and right door 20b open respectively independently is installed, this door opener 30, and establishing portion of L.H.flapped door mechanism 31 and portion of R.H.flapped door mechanism 32.

Below, portion of L.H.flapped door mechanism 31 is described.Shown in the cross-section structure on the top of the refrigerator 1 of Figure 11, portion of L.H.flapped door mechanism 31, be to be arranged on the device in the formed recess 1c in the top plate portion of refrigerator body 1, in plastic case 33, become the form that the electromagnet 34 that carries out DC driven as drive source is accommodated with the state of partly imbedding.

This electromagnet 34 has following main structural element: will form coil cylindraceous and carry out coil unit 35 after resin-molded; Can be to the plunger 36 of the magnetic system that is provided with in this unit with the state that runs through it with moving axially; By relatively this plunger 36, be fixed into the pushing member 37 that the nonmagnetic metal of coaxial shape constitutes, become the structure of carrying out the application of force when (below, as "on" position) plunger 36 when the coil of coil unit 35 is switched on and pushing member 37 to door 20a direction.

Be provided with at the rear portion of plunger 36 and prevent from flange part 36a usefulness, that for example constitute by C shape circle, be provided with around this plunger 36 by drawing in spring 38 that helical spring constitutes, making to act between above-mentioned flange part 36a and coil unit 35 has extending force.

Adopt above-mentioned structure, when when electromagnet 34 is switched on, pushing member 37 is forwards stretched out and left-hand door 20a is pushed and becomes the state that automatically opens the door, when disconnecting when switch on, the elastic force that utilization is drawn in spring 38 becomes the state that returns to primary position.

Portion of R.H.flapped door mechanism 32, owing to be the structure identical with portion of L.H.flapped door mechanism 31, its explanation of Therefore, omited, but when the electromagnet 34 of door-opening mechanism portion 32 is switched on, become the state that right door 20b is automatically opened the door to the right.

And, as shown in Figure 7, portion of R.H.flapped door mechanism 32, be arranged on 31 more close hinge side than portion of L.H.flapped door mechanism, this is to be located on the left-hand door 20a owing to rotating demarcation strip 25, and the required power of the right door of needed force rate 20b is bigger when opening the door, and makes roughly cause uniformly by the pushing force that reduces portion of R.H.flapped door mechanism 32, the speed of opening the door that can make left and right door 20a, 20b.

In addition, in the occasion that portion of R.H.flapped door mechanism 32 and portion of L.H.flapped door mechanism 31 is configured to symmetry, utilize conduction time and service voltage that pushing force is changed, make big than the right side by pushing force, also can make the speed of opening the door of left and right door 20a, 20b make roughly even portion of L.H.flapped door mechanism 31.In the occasion that varies in size of left and right door 20a, 20b, preferably also can carry out suitable change to suitable configuration place and pushing force again.

Below, with reference to the controlling party block diagram of Figure 10 control circuit of the present invention is described.

Control device 50 from left-hand door switch 26a and right door switch 26b, is imported enabling signal or is closed gate signal according to the door opening state of left and right door 20a, 20b, and from L.H.flapped door switch 27a, R.H.flapped door switch 27b input drive signal.

Control device 50 according to these signals, when gate signal is closed in input, when input drive signal, is exported the ON signal to L.H.flapped door circuit 51 or R.H.flapped door circuit 52.

Now L.H.flapped door circuit 51 is described.One terminal of electromagnet 34 is connected with the positive lead-out terminal of not shown voltage doubling rectifing circuit, and another terminal is connected with the drain side of the FET61 that drives usefulness.On the two-terminal of electromagnet 34, connecting diode 62 side by side again.

This FET61 when the driving signal that will close L.H.flapped door switch 27a in the gate signal during to control device 50 input, is used to make from the instruction of controlling device 50 state (the control power supply for example is direct current 15V, and driving power for example is direct current 200V) of ON.

Describe for the concrete structure of FET61 being carried out the ONOFF driving.Terminal from the outlet side of control device 50 is being connected with the base stage side of the 1st transistor 71 of npn type, the colelctor electrode side of the 1st transistor 71 is connected with the colelctor electrode of the 2nd transistor 67 of pnp type by resistance 69 supplies with the control power supply, and emitter side is connected with the base stage side of the 2nd transistor 67 with the 3rd transistor 68, and, be connected with the earth by resistance 70.

The emitter side of the 2nd transistor 67 is being connected with the emitter side of the 3rd transistor 68 of pnp type, and is being connected with the source side of FET61 by resistance 64.Again, the colelctor electrode side of the 3rd transistor 68 is being connected with the earth.

Again, this resistance 64 and is connected resistance 66 with the circuit that diode 65 is connected in series in parallel, is being connected with the earth by resistance 63 between the grid of this resistance 64 and FET61.

In the occasion of above-mentioned formation, when from control device 50 input ON signals, the 1st transistor 71 is made ON.So, supply with to the colelctor electrode side of the 2nd transistor 67 owing to will control voltage, so the 2nd transistor 67 makes ON, electric current flows between colelctor electrode one emitter stage.And, owing to be cut off to the electric current of the base stage side of the 3rd transistor 68, so the 3rd transistor 68 makes OFF and FET61 is made ON.On the other hand, when will from control device 50 the ON signal cut time, the 1st transistor 71 makes OFF, the resistance 70 that is grounded by the grid residual charge that utilizes FET61, because the base current of the 3rd transistor 68 flows, so the 3rd transistor 68 makes ON, the gate charge of FET61 is removed and FET61 is made OFF.

Again, FET61, by the ON time (impulse amplitude) is changed, become with the PWM control of carrying out time ratio control output voltage is driven the state of control, the ON signal (pwm signal) of FET61 is made frequency that user's ear is difficult to hear, for example makes more than the 8kHz.

The territory of listening that people's average zone of audibility reflects the most sensitively is near 4kHz, when with near the pwm signal this during to electromagnet 34 energising, as shown in this embodiment, because the front end of pushing member 37 and left and right door 20a, 20b butt, so said PWM signal door 20a, 20b to the left and right transmits and vebrato takes place, and often feels to have noise for the user.Again, owing to make the frequency of pwm signal too low, pushing member 37 can not sufficiently stretch out.Therefore, set for, except getting rid of overseas can also the opening the door reliably of listening that to feel noise as the pwm signal more than the 8kHz of high frequency.

In addition, for R.H.flapped door circuit 52, owing to be and L.H.flapped door circuit 51 same structures its explanation of Therefore, omited.

Below, describe with reference to the action of the time diagram of Fig. 1 door opener 30 when left-hand door 20a is opened the door.

Under the opened state of left-hand door 20a, owing to do not need the portion of L.H.flapped door mechanism 31 of door opener 30 is moved, so when left-hand door switch 26a is made OFF, promptly when gate signal is closed in output, when in the time at ta L.H.flapped door switch 27a being pushed when making ON, will drive signal to control device 50 outputs and portion of L.H.flapped door mechanism 31 is switched on by the user.

Utilize the driving of portion of L.H.flapped door mechanism 31 that pushing member 37 is stretched out and left-hand door 20a is pushed, the absorption of magnetic packing ring 21a is pulled away from, and as shown in Figure 7,26a makes ON and exports enabling signal with the left-hand door switch in the time of tb.

Control device 50, when being subjected to this enabling signal, regard magnetic packing ring 21a with left-hand door 20a as and be pulled away from and open the door to the position of regulation, switched on, for example switch on 0.1 second in time to the stipulated time of tc, become further left-hand door 20a is made the state that opens the door fully from this tb.

Adopt said structure, owing to make the state that utilizes door switch to switch on to door opener to the process stipulated time from the output enabling signal, so can open the door reliably.

In in the past, when door open switch is made ON, owing to only predefined voltage is supplied with to electromagnet through stipulated time, for example 0.2 second～0.3 second ground, so closing a time, when the required power of opening the door being changed, exist at door because of undue weak can not open the door fully or of opening of door because of the undue strong unfavorable condition that the food that is positioned in the accommodation bag is dropped etc. with the mounting amount of accommodation bag etc.

Specifically, the power of opening the door with refrigerator depends on the elapsed time of closing behind the door.Just closing behind the door, because the temperature in the refrigerator becomes low temperature when closing behind the door through the regular hour, so because of the compression of air in the refrigerator reduces the pressure in the refrigerator, the difference that becomes the pressure in atmospheric pressure and the refrigerator increases.

Generally, the refrigerator internal pressure is lower than outer gas, owing to when Jiang Men opens to close the power that a direction applies big, also increase certainly for the magnetic packing ring being pulled away from the required power of opening the door, even so assigned voltage is similarly supplied with to electromagnet, often can not open the door or open the door excessive velocities.

Again, varying in weight or dirt being arranged attached on the magnetic packing ring time of the food in being positioned in accommodation bag changes because of its viscosity makes the power of opening the door required.

Therefore, adopt the present invention, when the magnetic packing ring that changes significantly in the near required power of opening the door is pulled away from, specifically, when utilizing door switch output enabling signal, must switch on by the clamshell doors device, or after the required power of opening the door is not opened the door with having bigger variation, by proceeding to the stipulated time, can the most suitably door be opened to the power supply of door opener.

In addition, in this example, the refrigerator of opposite opened door is described, but in the present invention, also can plays same effect for the mode of 1 fan door.

Preferably, make later on and be specified to higher limit, for example 1.5 seconds between ta～tb of ON door open switch being made ON to enabling signal with door switch again.Though be generally 0.2～0.3 second, when there is barrier etc. the front at door and unrestrictedly switches under the state that can not open the door, might make electromagnet become high temperature and burn out.Therefore, can prevent such unfavorable condition by what preestablish that Cheng Buhui produces such unfavorable condition with the higher limit of acquisitions such as experiment.

And, after detecting the time tb that opens the door, owing to do not need, reduce output voltage so can change the PWM load or as also making output voltage reduction gradually with such shown in the dotted line of Fig. 1 than the power of opening the door bigger when the magnetic packing ring is pulled away from.

Then, for other embodiment, Fig. 8 of the vertical view of the refrigerator when opening the door with reference to the right door of Fig. 2, expression of the time diagram of expression one side action of the opposing party's the door opener that opens the door of door under the state that opens the door, the Fig. 9 that is illustrated under right the state of opening the vertical view of the refrigerator when left-hand door opened describe.In addition, for identical structure, owing to repeating to omit its explanation.

All close at left and right door 20a, 20b under the state of door, as the either party, here when making ON in the time of R.H.flapped door switch 27b at td, portion of R.H.flapped door mechanism 32 is switched on, as shown in Figure 8, in the time of the te that right door 20b opens the door when the enabling signal with right door switch 26b makes ON, in the stipulated time of te～tf, switched on 0.1 second here and a right side 20b is opened.This occasion, right door switch 26b becomes the ON state unceasingly.

Because either party's door does not become a negative pressure and a side under door opening state magnetic packing ring 21a, 21b be to 25 absorption of rotation demarcation strip, so can reduce power required when opening the door.Therefore, when using power same when closing to open the door, exist stretching out of pushing member too strong and have and produce the unfavorable condition that the food of mounting in accommodation bag drops etc.

Therefore, in the present embodiment, make when closing than a side shorter from back to the stipulated time that disconnects energising of opening the door.

Specifically, in the time of tg, for the opposing party's that will not open the door door, here left-hand door 20a is opened, when the user makes ON with L.H.flapped door switch 27a, the electromagnet 34 of door-opening mechanism portion 31 is switched on left, utilizes pushing member 37 that left-hand door 20a is pushed.

And, as shown in Figure 9, when magnetic packing ring 21a is pulled away from, when in time at th the enabling signal of left-hand door switch 26a being made ON, with the short shortening time of stipulated time when closing from the time of this th switch on, serve as energising 0.05 second here, become and in the time of ti, finish the state of switching on.

Adopt said structure, when under the state of either party's Men Kaimen, the opposing party's door being opened, will make when closing shortlyer,, can the most suitably open the door by the reduction power of opening the door from back to the stipulated time of cutting off energising of opening the door.

This occasion, shown in the dotted line of Fig. 2, make the PWM load variable, will for example be reduced to the supply voltage of electromagnet 34 that 70%～80% ground switches on, also can replace the method that will shorten conduction time, can reduce the power of opening the door equally.

Again, at the door that rotation demarcation strip 25 will be installed, when here left-hand door 20a being opened the door, why apply maximum load, be since make rotation demarcation strip 25 when being rotated, according to the form of refrigerator, even left-hand door switch 26a becomes the ON state, also there is rotation demarcation strip 25 to be the situation in the rotation, so, also often can not reduce the power of opening the door to left-hand door 20a even right side door 20b is opened.Therefore, in such occasion, preferably, be only applicable to not rotate the door of demarcation strip 25.

In addition, for other embodiment, with reference to expression from door open switch makes ON after to door switch make ON time ratio energising shorter occasion of change time door opener action time diagram Fig. 3 and represent that Fig. 4 of time diagram of action of the door opener of longer occasion describes.In addition, for identical structure, owing to repeating to omit its explanation.

As mentioned above, the required power of opening the door, owing to bigger variation is arranged according to the behaviour in service of refrigerator 1, so the power of opening the door is changed, and in the present embodiment, according to after door open switch being made ON to make door switch make ON time, the power of opening the door is changed.

Specifically, as shown in Figure 3, with the either party, when here left-hand door 20a being opened, when in the time at tj L.H.flapped door switch 27a being made ON, begin left door-opening mechanism portion 31 and switch on and utilize 37 couples of left-hand door 20a of pushing member to push by the user.

At this moment, carry out instrumentation with 50 pairs of control device from time to the times that left-hand door switch 26 made ON of tj in advance, with this minute and predefined energising switching time, for example compared in 0.5 second.In this minute ratio energising switching time of short occasion, especially being judged as does not need to strengthen when opening the door power, from left-hand door switch 26a being made the time of the tk behind the ON, as common stipulated time, for example 0.1 second or shortening time shorter than the stipulated time, for example switch in 0.05 second, in the time of tl, finish energising.

On the other hand, as shown in Figure 4, in long occasion switching time of switching on from time to the minute ratio that left-hand door switch 26a is made ON of tj, being judged as needs to strengthen the power of opening the door, the time of tm after left-hand door switch 26a being made ON to the time expand longer than the stipulated time, for example 0.1 second or as common stipulated time, for example switch on 0.1 second, in the time of tn, finish energising.

Adopt above-mentioned structure, according to opening the door the required time, for to changing conduction time, even because of the food effects of load clamshell doors needed power of mounting in accommodation bag changes, also the most suitably the power of opening the door of clamshell doors device changes.In addition, in this example, even in the refrigerator of 1 fan gate-type, also can play same effect, and, also can make the PWM load changeably output voltage be increased and decreased the change that replaces conduction time.

The example of the invention described above is an embodiment, also can carry out various combinations, with illustrative numerical value optimization.Again, door opener, the mechanism that is not limited to utilize the energising of electromagnet that the pushing member is stretched out can carry out various changes.

Below, other example of the present invention is described.Figure 13 is the stereogram of the refrigerator of expression the present invention other example, and Figure 14 is the figure of state behind the refrigerator open of expression Figure 13.In this Figure 13, Figure 14, in the refrigerator body that body of thermal insulating box constituted 1 as known configurations, by the switching chamber 5, the refrigerating chamber 6 that are sequentially set with refrigerating chamber 2, vegetable compartment 3, ice-making compartment 4, can switch from top to bottom to the internal temperature of multilayer, and with ice-making compartment 4 with switch chamber about 5 and setting side by side.

Below, the explanation for fear of repeating only describes the part different with aforesaid embodiment.

The aforesaid relatively Fig. 5 of the structure of Figure 13 has following difference.

In the front of right door 20b, be provided with the operating portion 28 that the temperature of storeroom etc. is adjusted etc., the operation by this operating portion 28 also can common refrigerating mode and shop displaying pattern switch to displaying pattern in shop described later.

Then, the aforesaid relatively Fig. 6 of the structure of Figure 14, added push-on switch 81 and weight sensor 83.

The vertical view of the refrigerator 1 when again, left-hand door 20a is opened in expression is identical with aforesaid Fig. 7.

Below, the controlling party block diagram of control circuit of the present invention with reference to Figure 16 described.

The structure of Figure 16 is corresponding with Figure 10 of the controlling party block diagram of aforesaid embodiment.

Below, the explanation for fear of repeating only describes the part different with aforesaid embodiment.

Control device 50, from left-hand door switch 26a and right door switch 26b, according to the door opening state input enabling signal of left and right door 20a, 20b or close gate signal, and from L.H.flapped door switch 27a, R.H.flapped door switch 27b input drive signal.

Control device 50, when gate signal and input drive signal are closed in input according to these signals, by the PWM load of load detection means 80 decision outputs described later, and with this pwm signal to L.H.flapped door circuit 51 or 52 outputs of R.H.flapped door circuit.

Below, L.H.flapped door circuit 51 is described.One terminal of electromagnet 34 is connected with the positive lead-out terminal of not shown voltage doubling rectifing circuit, and another terminal is being connected with the drain side of the FET61 that drives usefulness.On the two-terminal of electromagnet 34, connecting diode 62 side by side again.

This FET61, when the closing in the gate signal of left-hand door switch 26a, the driving signal of L.H.flapped door switch 27a during to control device 50 inputs, is become the state (the control power supply for example for example is direct current 200V for direct current 15V, driving power) that is carried out ON from the pwm signal of control device 50.

Below, in Figure 16, the concrete structure of FET61 being carried out the ONOFF driving being described, the part identical with aforesaid embodiment shown in Figure 10 omitted explanation.

In addition, for R.H.flapped door circuit 52, since identical with L.H.flapped door circuit 51 structures, its explanation of Therefore, omited.

Then, load detection means 80 is described.Load detection means 80 is arranged in the control device 50, and the load the when input value of each switch and sensor etc. etc. is opened the door detects, and in the present embodiment, just can detect having or not of food.

Specifically, push-on switch 81 is arranged on the bottom surface or the back side of accommodation bag 23a, the 23b of left-hand door 20a and right door 20b, when being housed in the beverage of small size bottle etc. and food in the accommodation bag, utilize the pushing push-on switch 81 such as container of this food and be judged as mounting food.On the contrary, if take out food, owing to do not exist by the pushing of food, so be judged as the not state of mounting food.

This occasion, also can use infrared ray sensor 82 to replace push-on switch 81, utilize the input of operating portion 28 grades can the food that at random is positioned among accommodation bag 23a, the 23b be carried out also judging having or not of food according to its information in the refrigerator of food control the user again.

Then, the action of the door opener 30 when opening the door describes with reference to the flow chart of Figure 12.In addition, for the simplification that illustrates, opening the door of left-hand door 20a described as an example.

In step S1, under the state that left-hand door 20a has opened the door,, detect so whether left-hand door switch 26a is made OFF owing to do not need to make door opener 30 to move, if be OFF, then enter step S2.

In step S2, when gate signal is closed in left-hand door switch 26a output, whether L.H.flapped door switch 27a is detected by user's pushing, if ON then regards the user as and requires opening the door of left-hand door 20a and enter step S3.

In step S3, the load when utilizing 80 pairs of load detection means that left-hand door 20a is opened the door detects.

This be since occasion in accommodation bag 23a of the food mounting of the heavy small size bottle of will for example loading etc., with the occasion of mounting not, needed power difference when opening the door, and make the variable cause of the power of opening the door of door opener 30 according to having or not of food.

At this moment, when with certain output voltage when electromagnet 34 is switched on, opening degree when mounting food is little, or opening degree is excessive and collide with the rotary block of not shown hinge portion when mounting food not, might noise take place greatly because of colliding the change of tune.

Therefore, in step S4, whether the load during clamshell doors is heavily judged, in the present embodiment, whether mounting is judged in accommodation bag 23a to food, if mounting food, it is heavy and enter step S5 then to be judged as load when opening the door, if mounting food not, it is light and enter step S6 then to be judged as load when opening the door.

In step S5, the power of opening the door is increased.Specifically, will become higher, for example be set at 100% to the PWM of door opener 30 load set.On the other hand, in step S6, the power of opening the door is reduced.Specifically, the PWM load set of door opener 31 is left become lower, for example be set at 90%.

And, in step S7,, L.H.flapped door device 31 is switched on according to the PWM load of setting respectively.Like this, the power of opening the door of the door opener 30 that left-hand door 20a is appropriately determin pushes and opens the door, through the stipulated time, for example disconnection of will switching on after 3 seconds.

Adopt said structure,, can not can cross strong or cross and carry out optimal opening the door weakly by the power of opening the door of door opener 30 is increased or the power of opening the door of door opener 30 being reduced when light being judged as load when opening the door being judged as load when opening the door.

Again and since according to food have or not clamshell doors the time load judge, and owing to can detect the load that applies when opening the door reliably, so can carry out optimal opening the door.

In addition, in said structure, the action of the door opener 30 when left-hand door 20a is opened the door describes, and moves similarly for a right door 20b, again, as the method that makes the power increase and decrease of opening the door, prolonged conduction time or shortens.In addition, the quantity according to food also can determine the different power of opening the door.

Then, the example to other describes.In the present embodiment, according to the weight that is positioned in the food among accommodation bag 23a, the 23b, the load during by load detection means 80 clamshell doors detects.

Specifically, weight sensor 83 is provided on the bottom surface of accommodation bag 23a, 23b, as shown in figure 16, will imports to control device 50 by these weight sensor 83 detected weight informations, according to this weight information, the load that applies during load detection means 80 clamshell doors is judged.For example, if detected weight is more than the 1kg, it is heavy then to be judged as load, if it when following, then is judged as gently.

Adopt said structure, owing to can detect the load that is applied on a 20a, the 20b reliably, and owing to the load that can detect more reliably when opening the door, so can the most suitably open the door.

Then, the example to other describes.In the present embodiment, utilize left-hand door switch 26a and right door switch 26b, the load that applies when all the time of closing gate signal according to output opens the door to left and right door detects.

Door 20a, the 20b power of opening the door to refrigerator 1 depends on and closes a time.Just closing behind the door, because temperature becomes low temperature in the refrigerator when closing behind the door through time to a certain degree, so meanwhile the pressure in the refrigerator reduces the difference increase of atmospheric pressure and refrigerator internal pressure.

Generally, the difference of outer gas and refrigerator internal pressure increases, be since with door 20a, when 20b opens to the big cause of power that applies of direction of closing door, with magnetic packing ring 21a, 21b is pulled away from and the required power of opening the door also increases certainly, so can not open the door or open the door excessive velocities even assigned voltage similarly supplied with to electromagnet 34.

Therefore, about door switch 26a, 26b all export the state that closes gate signal, if through the stipulated time, for example more than 1 hour,, increase and make the power increase (for example the PWM load is 100%) of opening the door so regard load when opening the door as then owing to become negative pressure in the refrigerator.On the contrary, if when not passing through the stipulated time, then regarding as does not become negative pressure and makes the power of opening the door reduce (for example the PWM load is 70%).

Adopt said structure, required power does not change when opening the door even refrigerator opens the door chronically, also since when closing the chien shih power of opening the door variable, so can the most suitably open the door.

Then, the method for judging as the load that applies on left and right door describes for other embodiment.Load detection means 80 compares to the instrumentation time of exporting this enabling signal and predefined stipulated time after will the driving signal when output was opened the door last time, and the load that applies during with regard to the energy clamshell doors detects.

Usually, load weight when the side of left-hand door 20a who is provided with rotation demarcation strip 25 opens the door, when dirt is last attached to the magnetic packing ring 21b of the right door 20b that is not provided with, load when because of its bonding force right door 20b one side being opened the door increases the weight of, and makes the situation of opening the door from left-hand door 20a in advance become bad.

Therefore, in the action of opening the door of the left-hand door 20a of last time and right door 20b, clamshell doors switch 27a, 27b operate the back to this time of opening the door respectively, specifically, left-hand door switch 26a and right door switch 26b are recorded in the control device 50 in advance to the minute of exporting enabling signal respectively.And when operation door open switch 27a, 27b, it is light to be judged as the load of the short side of its minute when opening the door.

This is owing to be the short time in the front and back that utilize door opener 30 usually, for the dirt no change of magnetic packing ring 21a, 21b, and the cause of the load in the time of the minute of last time being regarded as the opening the door of reality.

Therefore, adopt above-mentioned structure, can open the door from the light side that loads more reliably.

Then, the example to other describes.In the present embodiment, under the state of door switch 26a, the 26b output enabling signal of utilizing the either party, when the door with the opposing party opened the door, the load that is judged as when opening the door was light.

As mentioned above, under the state that two 20a, 20b is closed door, owing to become negative pressure in the refrigerator,, and the time, the load when opening the door is reduced owing to becoming negative pressure with the opening the door of either party so the load when opening the door increases.

Again, the principal element of the load when opening the door as generation has only been considered being pulled away from of magnetic packing ring 21a, 21b, and if the either party is opened the door, then since magnetic packing ring 21a, the 21b of the opposite face of two 20a, 20b be pulled away from, so the load reduction when opening the door.

Therefore, in the present embodiment, as shown in figure 15, when left-hand door 20a or a right door 20b are opened the door, whether the opposing party's door opened the door detected, if open the door, the load of then regarding as when opening the door is little, becomes the state (for example the PWM load is 50%) that the power of opening the door is reduced.

Adopt said structure, in the refrigerator of opposite opened door, in the occasion that one-sided door is opened, because the power of opening the door is reduced, so can the most suitably open the door.

Then, the example to other describes.In the present embodiment, the shop that does not make refrigerator 1 cooling ground that the electric member running that makes regulation only is set is showed that the structure of pattern describes.

Pattern is showed in the shop, is in order to promote the pattern of the sale usefulness in the shop, and is general, owing in the shop, do not need cooling off in the refrigerator, thus stop the running of compressor, and lamp in the refrigerator and fan etc. are turned round.

In this pattern, also door opener 30 is set for the state of driving, but owing to do not make cooling in the refrigerator, so can not become negative pressure in the refrigerator.Therefore, when so that the same power of opening the door is moved door opener 30 with when running cooling, can become the situation that makes the speed of opening the door strong excessively.Again since in the shop mounting food not, so the load when opening the door is also light.

Therefore, show the occasion of pattern in input shops such as the operations that utilizes operating portion 28,,, reduce (for example the PWM load is 70%), can the most suitably open the door by making the power of opening the door so the load that is judged as when opening the door is light owing to do not become negative pressure in the refrigerator.

Then, the example to other describes.In the present embodiment, only under the state behind the Men Kaimen that will be provided with rotation demarcation strip 25 1 sides, when the opposing party's door is opened the door, the load that is judged as when opening the door is light.

Load when opening the door, as mentioned above, whether change, rotation demarcation strip 25 is rotated if being opened according to the door that in the having or not of food mounting, the refrigerator whether is negative pressure or either party, become one of principal element that applies load when opening the door.

Therefore, set the power of opening the door of door opener 30 in order reliably the left-hand door 20a that is provided with rotation demarcation strip 25 to be opened the door, but because the situation that makes the rotation of rotation demarcation strip 25 is applied maximum load, so the bad situation that existence increases and decreases the power of opening the door because of other factor.

Therefore, when only under the state behind the Men Kaimen that will be provided with rotation demarcation strip 25 1 sides, the opposing party's door being opened the door, because the load that is judged as when opening the door is light, so can reliably the door that is provided with rotation demarcation strip 25 1 sides be opened the door, and, the opposing party's door can open the door according to the specification situation of refrigerator etc., so can the most suitably open the door.

In addition, above-mentioned structure is an example of the present invention, can carry out various changes.For example,, become the state that disconnects after the process stipulated time to the energising of electromagnet 34, and after beginning energising, after door switch output enabling signal, through also making the energising disconnection after the stipulated time.

Below, other example of the present invention is described.Figure 13 is the stereogram of expression refrigerator of the present invention, and Figure 14 is the figure of expression with state behind the refrigerator open of Figure 13.In this Figure 13, Figure 14, in the refrigerator body 1 that the body of thermal insulating box as known configurations constitutes, by the switching chamber 5, the refrigerating chamber 6 that are sequentially set with refrigerating chamber 2, vegetable compartment 3, ice-making compartment 4, can switch from top to bottom to the internal temperature of multilayer, and with ice-making compartment 4 with switch chamber about 5 and setting side by side.

Below, the explanation for fear of repeating only describes the part different with aforesaid embodiment.

In Figure 13,, be provided with the operating portion 28 that the temperature of storeroom etc. is adjusted in the front of right door 20b.

The vertical view of the refrigerator 1 when again, left-hand door 20a is opened the door in expression is identical with aforesaid Fig. 7.

Then, to control circuit of the present invention, describe with reference to the controlling party block diagram of Figure 16.Control device 50 from left-hand door switch 26a and right door switch 26b, is imported enabling signal or is closed gate signal according to the door opening state of left and right door 20a, 20b, from L.H.flapped door switch 27a, R.H.flapped door switch 27b input drive signal.

Below, the explanation for fear of repeating only describes the part different with aforesaid embodiment.

In addition, for R.H.flapped door circuit 52, owing to be the structure identical with L.H.flapped door circuit 51, its explanation of Therefore, omited, and L.H.flapped door circuit 51 is respectively independently with R.H.flapped door circuit 52 on electric.

This is owing to generally have the noise filter circuit that is made of the common-mode choke of removing from the noise of outside for electric circuit, when separately the circuit 51,52 that opens the door has common circuit, all electric currents flow in this common-mode choke,, need guarantee by this coil the current capacity of noise filter circuit so being maximized, if as present embodiment, on electric, carry out independence, owing to do not need to improve current capacity, so can realize miniaturization.

Then, the action of the door opener 30 during clamshell doors describes.In addition, be identical owing to make left-hand door 20a with the action that right door 20b opens the door, be that example describes so lift left-hand door 20a.

Because under the state that left-hand door 20a has opened the door, do not need to make L.H.flapped door device 31 to move, so when gate signal is closed in left-hand door switch 26a output, when making OFF, L.H.flapped door switch 27a is pushed and when making ON by the user, to drive signal to drive unit 50 outputs, door opener 31 is switched on left.

At this moment, pushing member 37 stretches out and left-hand door 20a is pushed, and the absorption of magnetic packing ring 21a is pulled away from, and as shown in figure 16,26a makes ON and exports enabling signal with the left-hand door switch.Usually, after L.H.flapped door switch 27a is made ON to the time that left-hand door switch 26a makes ON be 0.2 second～0.3 second.

Control device 50 is estimated as magnetic packing ring 21a is pulled away from the position situation of opening the door to regulation when being subjected to this enabling signal, from this time to the stipulated time of switching on, for example made left-hand door 20a become the state that opens the door fully in 0.1 second.

Then, the action for the left and right opening door device when the door opener of Xiang Yifang is switched on, when the opposing party's door open switch is operated describes with reference to the flow chart of Figure 17.In addition, here, will be left when door opener 31 is switched on, the situation of operation R.H.flapped door switch 27b describes for example.

In step S11, owing to regard to not needing door opener 30 is moved, detect (step S11) so whether left-hand door switch 26a and right door switch 26b are all made OFF if a left-hand door 20a and a right door 20b have opened the door, then enter step S12 as if making OFF.In addition, if the door switch to the opposing party is operated when a side has opened the door, as usually, become the state that beginning is switched on to the door opener of the opposing party's reveal.Certainly, the load that clamshell doors applied because a side door has opened the door alleviates, so also can reduce the power of opening the door.

In step S12,, require to open the door and enter step S13 if operated then to be judged as by the user to whether having operated L.H.flapped door switch 27a or R.H.flapped door switch 27b detects (step S12).

In step S13, the door open switch of whether operating the opposing party is detected, that is, detect (step S13) to whether having operated door open switch 27a, 27b simultaneously, then enter step S14 if operated, if operation does not then enter step S15.

In step S14, to behind the door open switch of operating a side whether through the stipulated time, for example detected (step S14) in 0.02 second.That is, even simultaneously, for user's operation, usually because free the hysteresis if at the appointed time the opposing party's door open switch is operated, also can be regarded the cause of operating simultaneously as behind the door open switch of operating a side.

Therefore, even if be not operated, be not judged as yet and operate simultaneously, enter step S15 through this stipulated time, the opposing party's door open switch, as mentioned above, beginning is to the door opener 30 of operation door open switch side, door opener 31 switch on (step S15) left here.On the other hand, not passing through the occasion of this stipulated time, just return to step S13.

In addition, this stipulated time is owing to be not to time that door opener 30 is switched on, so when setting considerable time for, although the clamshell doors switch is operated, how not move owing to door opener 30 yet yet, and might give sense of discomfort, so be preferably below 0.05 second the user.

In step S16, whether the energising of L.H.flapped door device 31 is finished to detect (step S16).Specifically, whether passed through the stipulated time behind the ON and detected, if then enter step S17 through the stipulated time beginning from energising left-hand door switch 26a made.

In step S17, whether operated the opposing party's door open switch 27 in the energising to door opener 31, be that R.H.flapped door switch 27b detects (step S17) here left, then enter step S18 if carried out operation, beginning is to door opener 30 energising of operating a side, here door opener 32 switch on (step S18) to the right.

Promptly, in the energising of the door opener of Xiang Yifang, even operation the opposing party's door open switch, because the energising to a side door opener finishes, do not carry out energising to the opposing party's door opener yet, so can be not overlappingly to the left and right the energising of door opener, just can prevent that too much electric current from flowing.

And, as mentioned above,, the situation of the door opener about operation is arranged simultaneously according to user's operation, below, the action when operating simultaneously describes.

In step S19, the load during to the opening the door of left and right door 20a, 20b is judged (step S19).As an example, general because to be provided with the load that a side of rotation demarcation strip 25 applies when rotated bigger, so be judged as will be provided with load when the left-hand door 20a that rotates demarcation strip 25 opens the door heavier.

In step S20, the load after judging by step S19 light reveal begin energising (step S20).Here, the duty ratio left-hand door 20a owing on right door 20b rotation demarcation strip 25 not being set and opening the door is lighter, switches on a right 20b is opened the door so begin to the right door opener 32.

At this moment, as shown in figure 15,27b compares with the R.H.flapped door switch, even earlier L.H.flapped door switch 27a is operated with the degree of regarding as simultaneously, also can begin energising and opens the door from a right door 20b from R.H.flapped door device 32.

In step S21, S16 is same with step, for prevent to about door opener 31,32 switch on overlappingly, here, whether the energising of subtend R.H.flapped door device 32 finishes to detect (step S21), if energising finishes, then enters step S22.

In step S22, begin switch on by the heavy door of the load after the step S16 judgement (step S22).Here, beginning left door opener 31 for left-hand door 20a is opened the door switches on.

Like this, the reason of opening the door from the light side that loads is, like that door switch is made ON to the occasion of switching on to door opener at present embodiment through the stipulated time, owing to when door switch not being made ON, do not begin energising at least to the opposing party's door opener, and because when when the heavy reveal of loading is switched on, extremely door switch is made ON needs the time (for example 0.5 second～1.5 seconds), how the opposing party's door does not open the door yet, so might give sense of discomfort to the user.

Therefore, even operate door open switch 27a, 27b simultaneously,,, can make door opener 30 move and open the door reliably so can not give sense of discomfort to the user because the light side of load when opening the door opens the door.

Adopt above-mentioned structure, the door opener of Xiang Yifang switch on during, even the door open switch to the opposing party is operated, also owing to finish in the opposing party's door opener, not switch on to energising, so can prevent overlappingly to about door opener switch on, therefore, can avoid the automatic citrcuit bearker action of source power supply.

Again, operate the occasion of door open switch at the same time, open the door by the door that never is provided with the rotation demarcation strip that when opening the door, applies load, owing to can open the door from the light side that loads, so can not give sense of discomfort, can door opener be moved to the user.

Then, as the method that the load that applies is judged, other embodiment is described on left and right door.

Be provided with load detection means 80 in control device 50, the load the when input value of each switch and sensor etc. etc. is opened the door detects, and just having or not of food is detected in the present embodiment.

This is because following cause: in accommodation bag 23a mounting for example load heavy small size bottle etc. food occasion with in the occasion of mounting not, load difference when opening the door, in the form of the refrigerator that rotation demarcation strip 25 is not set is certain, even in the form of the refrigerator that present embodiment is provided with like that, the load of door when opening the door that side was not set according to having or not of food also has the situation that becomes heavy.

Specifically, push-on switch 81 is located on the bottom surface or the back side of left-hand door 20a and accommodation bag 23a, the 23b of right door 20b, when being contained in the beverage of small size bottle etc. and food in the accommodation bag, the container etc. that utilizes this food pushes push-on switch 81 and is judged as mounting food is arranged.On the contrary, if taken out food, owing to there is not the pushing that utilizes food, mounting has food so be judged as not.

In addition, also can use infrared ray sensor 82 to replace push-on switch 81, again, can utilize the input of operating portion 38 grades that the food of any mounting in accommodation bag 23a, 23b is carried out in the refrigerator of food control, also can judge having or not of food according to this information the user.

As action, in step S19, utilize the having or not of food of 80 couples of left-hand door 20a of load detection means, right door 20b to detect, being judged as mounting the side for left and right door 20a, 20b has food, the opposing party's door is judged as the not occasion of mounting food, and it is lighter that a side's of mounting food door not is judged as load.Again, be judged as left and right door 20a, 20b all not mounting food or mounting the occasion of food is arranged, it is heavier also the door that is not provided with a side of rotation demarcation strip 25 can be judged as load.

Adopt said structure, owing to can respectively the load of left and right door be detected according to user's behaviour in service, so can open the door from the light side that loads reliably.

In addition, in the occasion that can repeatedly detect, also can judge load according to the food number to having or not of food.

Again, having or not only to food, also on the bottom surface of accommodation bag 23a, 23b, set weight sensor 83, as shown in Figure 7, if according to utilizing these weight sensor 83 detected weight informations that the load that is applied on left and right door 20a, the 20b is judged, can than food have or not clamshell doors more reliably the time load detect.

Then, as the method that the load that is applied on the left and right door is judged, describe for other embodiment.Load detection means 80 will just can detect the load that applies when opening the door from comparing to instrumentation time of exporting this enabling signal and predefined stipulated time behind the driving signal of output when opening the door last time.

Usually, be provided with the load weight of left-hand door 20a one side when opening the door of rotation demarcation strip 25, and when dirt is last attached to the magnetic packing ring 21b of the right door 20b that is not provided with, load when because of this bonding force right door 20b one side being opened the door increases the weight of, and makes the situation of opening the door from left-hand door 20a in advance become bad.

Therefore, will be in the action of opening the door of the left-hand door 20a of last time and right door 20b, from after operating door open switch 27a, 27b respectively to the time of opening the door, specifically, left-hand door switch 26a and right door switch 26b are recorded in the control device 50 in advance to the minute of exporting enabling signal respectively.And when operation door open switch 27a, 27b, in step S19, the load that the side that this minute is short is judged as when opening the door is lighter.

This is owing to utilize the front and back of door opener 30 to be the short time usually, the dirt no change of magnetic packing ring 21a, 21b, the cause of the load in the time of the minute of last time being regarded as actual opening the door.

Therefore, adopt above-mentioned structure, can open the door from the light side that loads more reliably.

In addition, above-mentioned structure is one embodiment of the invention, can carry out various combinations, and can make illustrative numerical value optimization according to the form of refrigerator.For example,, become after door switch being made ON to finishing, but also can make after the operation door open switch with stipulated time, the structure of for example switching in 1 second through after the stipulated time to the energising of door opener 30.

Again, the present invention, owing to be in the energising of the door opener of Xiang Yifang, during operation the opposing party's door open switch or the method for operating of the door opener when operating door open switch simultaneously, so also can be adapted to not have the refrigerator of the opposite opened door that rotates demarcation strip 25.

Utilizability on the industry

As mentioned above, adopt the present invention, can use door opener the most suitably to open the door, and can be adapted to Various refrigerators with door opener.

As mentioned above, adopt the present invention, though in the energising of the door opener of Xiang Yifang opening the opposing party When door switch operates or when operating door open switch simultaneously, also can open the door reliably, can be adapted to Refrigerator with various opposite opened doors of door opener.

Claims (16)

1, a kind of refrigerator is characterized in that, has: open and close the door that is located at body storeroom front openings portion freely; The pushing member is stretched out to be pushed and the door opener that opens the door the described shop front; Drive the door open switch of the driving signal of this door opener by user's operation output; And the door opening state of described door detected and export enabling signal and close the door switch of gate signal, closing under the state of gate signal from this door switch output, begin during from described door open switch output drive signal to the door opener energising, from utilizing after the described door switch output enabling signal to proceed energising through the stipulated time.

2, a kind of refrigerator is characterized in that, has: the left-hand door and the You Men that open and close the opposite opened that is located at body storeroom front openings portion freely; The L.H.flapped door device and the R.H.flapped door device that respectively its left and right sides shop front are pushed and open the door; Operation output by the user drive respectively this left and right opening door device about drive the L.H.flapped door switch and the R.H.flapped door switch of signal; And the door opening state of described left and right door detected, and exports enabling signal respectively and close the left-hand door switch and the right door switch of gate signal,

All exporting under the state that closes gate signal from this left and right door switch, during since described door open switch output drive signal of the side to the door opener energising of correspondence, after the door switch output enabling signal of utilizing described correspondence, continue to switch on assigned voltage to the process stipulated time

Exported under the state of enabling signal either party from this left and right door switch, in occasion, from utilizing after corresponding left-hand door switch or the right door switch output enabling signal to through continuing energising than short time described stipulated time or with the voltage lower than assigned voltage from the opposing party's described L.H.flapped door switch or R.H.flapped door switch output drive signal.

3, refrigerator as claimed in claim 1 or 2, it is characterized in that, when door opener is switched on, from behind the output drive signal being the occasion below the predefined energising change time, short or energising voltage of stipulated time is switched on than the lowland to the time of exporting enabling signal.

4, a kind of refrigerator is characterized in that, has: the left-hand door and the You Men that open and close the opposite opened that is located at body storeroom front openings portion freely; The L.H.flapped door device and the R.H.flapped door device that utilize energising that its left and right door is pushed respectively and open the door; By user's operation output drive signal, the L.H.flapped door switch and the R.H.flapped door switch of respectively the left and right opening door device being switched on; And the load detection means that detects of the load that applies during to the opening the door of described left and right door,

To both sides or either party's door when opening the door, when the load when utilizing described load detection means to be judged as to open the door is light, the power of opening the door of described left and right opening door device is opened the door with reducing.

5, refrigerator as claimed in claim 4 is characterized in that, the load detection means, and according to the having or not of food of institute's mounting in the accommodation bag on the door that is located at both sides or either party, the load that applies when left and right door is opened the door detects.

6, refrigerator as claimed in claim 4, it is characterized in that, the load detection means has the weight sensor at the accommodation bag place on the door that is located at both sides or either party, and according to utilizing the detected weight of this weight sensor, the load that applies when left and right door is opened the door detects.

7, refrigerator as claimed in claim 4, it is characterized in that, the load detection means has left-hand door switch and the right door switch that the open and-shut mode to left and right door detects respectively, according to closing a time of the door that utilizes these detected both sides of left and right door switch, the load that applies when left and right door is opened the door detects.

8, refrigerator as claimed in claim 4, it is characterized in that, the load detection means, have left-hand door switch and right door switch that the open and-shut mode to left and right door detects, according to from behind the operation door open switch of last time to the door switch that detects fore side be the minute of door opening state, the load that applies during clamshell doors detects.

9, a kind of refrigerator is characterized in that, has: the left-hand door and the You Men that open and close the opposite opened that is located at body storeroom front openings portion freely; The L.H.flapped door device and the R.H.flapped door device that utilize energising that its left and right door is pushed respectively and open the door; By user's operation output drive signal, the L.H.flapped door switch and the R.H.flapped door switch of respectively the left and right opening door device being switched on; And left-hand door switch and right door switch that the open and-shut mode of described left and right door is detected respectively,

Under the detected state of situation that the door that utilizes this left and right door switch to the either party is opened the door, when the door to the opposing party opened the door, the load that is judged as when opening the door was light, and the power of opening the door of L.H.flapped door device or R.H.flapped door device is opened the door with reducing.

10, a kind of refrigerator is characterized in that, has: the left-hand door and the You Men that open and close the opposite opened that is located at body storeroom front openings portion freely; The L.H.flapped door device and the R.H.flapped door device that utilize energising that its left and right door is pushed respectively and open the door; By user's operation output drive signal, the L.H.flapped door switch and the R.H.flapped door switch of respectively the left and right opening door device being switched on; And the shop displaying pattern that does not make refrigerator cooling ground that the electric member of regulation is turned round,

In this shop displaying pattern,, be judged as when opening the door and load gently, and the power of opening the door of L.H.flapped door device or R.H.flapped door device is opened the door with reducing in the occasion that both sides or either party's left and right opening door switch is operated.

11, as each described refrigerator in the claim 4～10, it is characterized in that, inaccessible rotation demarcation strip is carried out in relative gap when being provided with on-off action according to door being rotated and will closing on left-hand door or right door, only at the door of a side that will not be provided with this rotation demarcation strip when opening the door, it is light and open the door to be judged as load when opening the door.

12, a kind of refrigerator is characterized in that, has: the left-hand door and the You Men that open and close the opposite opened that is located at body storeroom front openings portion freely; The L.H.flapped door device and the R.H.flapped door device that utilize energising that its left and right door is pushed respectively and open the door; And by user's operation output drive signal, the L.H.flapped door switch and the R.H.flapped door switch of respectively the left and right opening door device being switched on,

During a side door opener is switched on, to the occasion that the opposing party's door open switch is operated, after finishing, the energising to this door opener begins the opposing party's door opener is switched on.

13, refrigerator as claimed in claim 12 is characterized in that, roughly simultaneously to about the door open switch occasion of operating, the door opener of the reveal that the load when opening the door is light begins energising.

14, refrigerator as claimed in claim 13, it is characterized in that, inaccessible rotation demarcation strip is carried out in relative gap when being provided with on-off action according to door being rotated and will closing on left-hand door or right door, at the same time to about the door open switch occasion of operating, a direction door opener that never is provided with the rotation demarcation strip begins energising.

15, refrigerator as claimed in claim 13, it is characterized in that, the load detection means that the load that applies when being provided with the opening the door of described left and right door detects, roughly simultaneously to about the door open switch occasion of operating, begin energising from the light direction door opener of loading.

16, refrigerator as claimed in claim 15, it is characterized in that, the load detection means, have left-hand door switch and right door switch that the open and-shut mode to left and right door detects, according to the minute that detects door opening state behind the operation door open switch of last time to the door switch of operating a side, the load that applies during clamshell doors detects.

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