TW200535389A - Refrigerator - Google Patents

Abstract

To provide a refrigerator capable of properly opening a door by using a door opening device. The refrigerator comprises the door opening device for opening the door by pressing a door face by projecting out a pressing member when a driving source is energized, door opening switches outputting a door opening signal and a door closing signal by detecting opening and closing states of the doors, and a control means for opening the door by energizing the door opening device when driving signals are output from the door opening switches under a condition that the door closing signals are output from the door switches. The control means cuts off the energization to the door opening device after the lapse of a specific time from the output of the door opening signals from the door switches.

Description

200535389 IX. Description of the invention: [Technical field to which the invention belongs] The present invention relates to a refrigerator having a door opening device for opening a storage compartment door by pushing out a pushing member. [Previous technology] In recent years, with the diversification of dietary life, the storage capacity of refrigerators also tends to = large = 'especially domestic refrigerators t, the storage internal volume exceeds _ • two liters: the level has become mainstream' the height of the refrigerator body or The width dimension also tends to increase. v Following this trend, the refrigerating room or freezing η ~ 工 ～, 芰 冯 大人, the temple is located inside the door of the refrigerating room with a large volume '5' also tends to expand the height of the bathroom and produce 4 degrees in size and increase Depth size and storage = food 'Sometimes the door itself is also large, so it is necessary to use greater strength as a solution to the problem of inconvenience to weak women or elderly people. And it is evaluated as a product that does not fit into the market when the door is opened (for example, 'patent text pushes the side of the door & & "switch operation, positioning the pin self-opening device. 仟 Open the solenoid solenoid door as the door This type of door opening device, if operated, energizes the electromagnetic solenoid for a specific time, and the door opening switch on the surface pushes and opens the door from the @@ Pushing member from the initial position to push and open the door. Use strong # to cut off the initial position after the power is turned on. Bu Zhi's firm force can be pulled and returned to 98529.doc 200535389 by the elastic force. In addition, consider the following structure: In a left-to-right refrigerator, Use the single above-mentioned door opening device to open the left and right doors simultaneously, or to open the left and right doors one by one. (For example, Patent Document 2) _ [Patent Document 1] Japanese Patent Laid-Open Publication No. 2001-59675 [Patent Document 2] Japanese Patent Japanese Patent Application Laid-Open No. 2003-83673 [Problems to be Solved by the Invention] However, since the door opening device of the above-mentioned patent document 丨 is configured to supply a preset voltage to an electromagnetic solenoid via a specific φ time, If the force required to open the door such as the closing time of the corresponding door, the load capacity of the storage box, etc. changes, there are the following disadvantages: the door cannot be charged / knife opened due to the weak opening of the door, or This may cause the food stored in the storage box to fall, etc. In addition, depending on the specifications of the refrigerator, such as the load of the storage box installed in the door or the cooling in the refrigerator, the force required to open the door may change, but the above-mentioned Patent Document 1 Because the door opening device of 2 and 2 is preset in a certain period of time, the voltage is supplied to the electromagnetic solenoid, so there are the following disadvantages. The door cannot be fully opened due to the weak opening of the door, or due to This can cause food stored in the storage box to fall, etc. ^ In left-right refrigerators, in the case of one-sided opening or the use of ^ rotary knife partitions, although the force required to open the door is generated Changes, but the driving method of the door opening device has never been discussed before. In the left and right refrigerator, the left and right doors can be opened one by one. Switch, but depending on the user, sometimes the brother's opening device is in the power-on period, and the other 98529.doc 200535389 door opening device is operated or operated at the same time. In this case, the refrigerator, oven, rice cooker Commercial power supplies such as kitchen appliances are commonly used as circuit breakers that prevent excessive current flow. Therefore, the following possibilities exist when other appliances are used. If power is applied to the door opener of the two, the circuit breaker will The operation can be started. However, such verification has not been implemented before, so it is necessary to study the operation of the door opening device according to the actual situation of the user and open the door to one side: while the power is on, operate or operate the other door opening switch at the same time. A book was developed in consideration of the above-mentioned problems, and its purpose is to provide a refrigerator that can automatically open the door optimally regardless of the load state of the storage box on the refrigerator door. 2: The invention was developed with the above problems in mind, and its purpose is to ",-a type of refrigerator, which automatically opens the door as appropriate regardless of the refrigerator's use conditions. Take, and 'The invention is developed in consideration of the above problems. A successful person, when providing a refrigerator, the side opening device is in a state of being powered on. It is also convenient to use it as a door opening switch for other parties, or when the σ inch is in the first place. [Summary of the Invention], , Da m caught the door to open the cocoa. The present invention is characterized in that 1 ~, n · Qing, which can be freely installed in the opening of the front surface of the main body storage room, pushes the front surface, 1% of the driving source, The door opening device that pushes the exit door of the push member will be launched; through the operation of the user, the door opening switch that makes the door opening and closing test F-shaped green a signal; and detects the above-mentioned " closing door opening Door switch with signal and door closing signal; if in the state of 98529.do, 200535389 from the door switch to output the relevant door signal, the drive signal is output from the door open switch, then the door opening device is energized, and After the door switch outputs a door open signal, the power is continued until a specific time has elapsed. The refrigerator of the present invention is characterized in that the left and right side-opening left and right doors of the opening portion on the front surface of the main body storage room are freely opened and closed; , Respectively push the left and right doors to open the left door installation | and right door 1 set, # the left and right door switches and right door switches that are driven by the user to output drive signals to energize the respective left and right door opening devices; and Load detection mechanism for the load that the left and right doors are subjected to when opening the door; when opening the door of either side or any one, the load detection mechanism judges that the load when opening the door is light, and makes the left and right door open the opening force The refrigerator of the present invention is characterized in that: the left and right side-opening left door and the right door which are freely arranged on the front opening of the main body storage room are provided with a switch; Door opening device and right door opening position, and drive signals are output by the user's operation Left door switch and right door switch when the door device is energized; when the door switch is operated by the other party during the energization = one door device, after the energization of the β-hai door device is completed, the other door device starts to be energized. Σ [发明 之Effect] According to the above invention, it is necessary to energize the door opening device until the magnet pads whose strength required to open the door changes greatly depending on the state of the refrigerator door, specifically, until the door opening signal is output by the door switch. , Again, 98529.doc 200535389 The force required to open the door I Qu Shi / Tian Youhua After opening the door, by turning off the power to Monroe Jinzheng + ,,] after opening the door for a specific time, the door can be opened optimally . Open the door to describe the month, because the detection is based on the use of the refrigerator to detect the load when the door is opened, it is appropriate to change the door opening device uuih

According to the above-mentioned invention, the refrigerator is turned on when the left-to-right turn-off is performed while the door opening device of one side is being energized or simultaneously operated. Type door refrigerator, which can provide a door opening switch that is operated by others 3: the current does not flow and does not open. [Embodiment]

Hereinafter, embodiments of the present invention will be described. Fig. 5 is a perspective view showing the refrigerator of the present invention, and Fig. 6 shows a state in which the refrigerator of Fig. 5 is opened. In Figs. 5 and 6, "inside the ice-phase body 1 constituted as a well-known heat-insulating box", there are provided a refrigerating compartment 2, a vegetable compartment 3, an ice-making compartment 4 in order from the top, and the internal temperature can be switched to A plurality of stages of switching room 5, cold; east room 6, ice-making room 4, and switching room 5 are arranged side by side. Left openings 20a and right-door birds constituting so-called left-right side-opening doors which pivotally support the left and right ends of the refrigerator compartment 2 are provided in the front opening of the refrigerating compartment 2, respectively, in the vegetable compartment 3, the ice-making compartment 4, the switching compartment 5, and the cold rolling. Each of the chambers 6 is provided with drawer-type doors 3a, 4a, and doors connected to respective storage containers (not shown). Magnet pads 2U and 21b are attached to the peripheral edges of the left and right doors 20a and 20b. The left and right doors 20a and 20b are configured to be attracted to the flange portion 1a of the refrigerator 1 by the magnet pads 21a and 21b. Keep it off. Moreover, although it is not shown in the figure, it is also in other doors; ^, 4a, 5a, and 6a. The week on the back side 98529.doc -10- 200535389 There is a magnet for women's clothing at the edge. Inside the magnet pads 21a and 2lb, a pair of bead portions 22a and 22b extending up and down are formed, respectively, and storage boxes 23a and 23b for storing food are provided on the bead portions 22a and 22b. In addition, a rotary partition plate 25 is provided on the bead portion 22a of the left door 20a opposite to the right door 20b. The rotary partition plate 25 is closed by the magnet linings 21 a and 21 b of the left and right doors closed and closed. The gap between the doors. The rotating partition plate 25 is set to rotate in the following situation. The tip lb provided on the upper part of the main body is slid in the groove formed on the rotating partition plate 25 according to the opening and closing operation of the left door 20a. Left and right door switches 27a and 27b are installed at the front of the left and right doors 20a and 20b. If the left door switch 27a is pushed, the door opening signal for opening the left door 20a is output. If the right door switch 27b is pushed, the door is opened. Opening signal of the right door 20b. Furthermore, when the left door opening switch 27a is pushed, a door opening signal for opening the right door 20b can also be output. Specifically, it is configured as a mechanical switch having a normally-open type micro switch that can be turned on when the left and right door opening switches 27a and 27b are pushed and operated. Furthermore, it may include an optical switch or a magnetic switch using a photo interrupter. As shown in FIG. 7 which is a plan view of the refrigerator 1 when the left door 20a is opened, door switches 26a and 26b for detecting the self-opening status of the left and right doors 20a and 20b are provided on the left and right side walls of the refrigerator compartment 2, respectively. The door switches 26a and 26b are configured such that when the button 26 is pushed by the bead portions 22a and 22b, the doors 20a and 20b are closed and a door closing signal (open state) is output. 2b is slowly opened to press the button. If the button is protruded to a certain extent by the spring force, the doors 20a and 20b are set to open and output a door open signal (on state). 98529.doc 11 200535389 A door opening device 30 for separately opening the left door 20a and the right door 20b of the refrigerating compartment 2 is installed on the ceiling portion of the ice phase body 1. The door opening device 30 and the left door opening mechanism portion 31 and the right door are installed. The mechanism sections 32 are juxtaposed. Hereinafter, the left door opening mechanism section 31 will be described. As shown in FIG. 11 showing the cross-sectional structure of the upper part of the refrigerator, the left door opening mechanism part 3 is set in a state of being partially embedded in the recessed part 1 c formed in the ceiling part of the refrigerator body 1, and is set in a synthetic tree month system; The fg 33 is stored in a state where the electromagnetic solenoid 34 driven by DC is used as a driving source. The main constituent elements of the electromagnetic solenoid 34 are: a coil unit 35 formed by forming a cylindrical coil resin, and a magnetic system column capable of moving in the axial direction when the unit is penetrated in the unit; The plug 36 includes a non-magnetic metal pressing member 37 fixed to the plunger 36 coaxially. In addition, when the coil of the coil unit 35 is energized (hereinafter, referred to as an energized state), the plunger 36 and the pressing member 37 are biased toward the door 20a. A 锷 • section 3 containing a c-ring is provided at the rear of the plunger 36 to prevent it from detaching. A rim 3 is provided around the plunger 36 between the 锷 36a and the coil unit 35 to make an extension force act. Traction spring 38 of the coil spring. According to the above configuration, if the electromagnetic solenoid 34 is energized, the pressing member “will protrude forward and push the left door through the door to open the door automatically, and if the material is cut off, it will return to the initial position by the spring force of the traction spring 38. Since the structure of the right door closing mechanism section 32 is the same as that of the left door opening mechanism section 31, its explanation is omitted, but if the electromagnetic solenoid% of the right door opening mechanism section 32 is energized, the right door 20b can be automatically opened. 98529.doc 200535389 So, as As shown in FIG. 7, the right door opening mechanism portion 32 is provided closer to the hinge side than the left door opening mechanism portion 3 i because the left door 20a is provided with a rotating partition plate 25, thereby connecting the right door 20b The force 1 ′ required when opening the door is more necessary than that, so that the pressing force of the right door opening mechanism portion 32 is reduced, thereby the door opening speeds of the left and right doors 20 a and 20 b can be approximately the same. Furthermore, the right door opening mechanism portion 32 and When the left door opening mechanism section 31 is arranged symmetrically, the pressing force can also be changed according to the energizing time or supply voltage, so that the left door opening mechanism section 31 is stronger than the right side, thereby making the left and right doors 20a and 20b. The opening speed is roughly the same. When the sizes of the left and right doors 20a and 20b are different, it is better to appropriately change the proper configuration or pushing force. Second, the control circuit of the present invention will be described with reference to FIG. 10 as a control block diagram. The device 50 inputs a door opening signal or a door closing signal from the left door switch 26a and the right door switch 26b according to the opening state of the left and right doors 20a and 20b, and inputs a driving signal from the left door opening switch 27a and the right door opening switch 27b. If the drive signal is input when the relevant door signal is input, the ON signal is output to the left door opening circuit 51 or the right door opening circuit 52. The left door opening circuit 51 will be described. One of the terminals of the electromagnetic solenoid 34 is connected to an unillustrated one. The positive output terminal of the voltage doubler rectification circuit, and the other terminal is connected to the drain side of the driving FET61i. In addition, two terminals 62 are connected in parallel to the two terminals of the electromagnetic solenoid 34. The left-opening door switch L 7 The driving signal of a is input to the control device 50, and then the FET61 can be turned on according to the instruction from the control device 50 (the control source is for example DC 15 V, and the driving power source is for example DC 2 00 V). 98529.doc -13- 200535389 The specific structure of driving the FET6 1 on and off will be described. The output-side terminal from the control device 50 is connected to the base side of the npn-type first transistor 71. The collector side of the first transistor 71 is connected to the collector side of the pnp-type second transistor 67 through a resistor 69 to supply control power, and the emitter side is connected to the base of the second transistor 67 and the third transistor 68. The electrode side is connected to the ground via a resistor 70. The emitter side of the second transistor 67 is connected to the emitter side of the pnp type third transistor 68, and is connected to the source of the FET 61 through a resistor 64. side. The collector side of the third transistor 68 is in a grounded state. The resistor 64 is connected in parallel to a circuit in which a resistor 66 and a diode 65 are connected in series. The resistor 64 and the gate of the FET 61 are grounded via a resistor 63. In the case of the above configuration, if an ON signal is input from the control device 50, the first transistor 71 will be ON. Then, since the control voltage is supplied to the collector side of the second transistor 67, the second transistor 67 is turned on, and a current flows between the collector and the emitter. Then, because the current flowing to the base side of the third transistor 68 is cut off, the third transistor 68 will be turned off and the FET 61 will be turned on. On the other hand, if the ON signal from the control device 50 is turned off, the first transistor 71 will be turned off, and the base current of the third transistor 68 will be left by the residual charge of the gate of the FET 61 and passed through the grounded resistor. 70, and the third transistor 68 will be turned on and the gate charge of the FET 61 will be transferred so that the FET 61 will be turned off. In addition, FET6 1 can change the on-time (pulse width) to drive and control the output voltage with PWM control of the control time ratio. The FET6 1 ’s 98529.doc -14- 200535389 ON signal (PWM signal) is set to For frequencies that are difficult to hear for the user's ears, for example, above 8 kHz. The most sensitive listening area in the average human audible area is around 4 kHz. If the electromagnetic solenoid 34 is energized by this nearby PWM signal, as shown in this embodiment, there are sometimes the following situations. The tip is in contact with the left and right doors 20a, 20b, so the above-mentioned PWM signal will be transmitted to the left and right doors 20a, 20b, thus generating a vibration sound, and the user will feel noise. If the frequency of the pwM signal is too low, the pressing member 37 cannot sufficiently protrude. Therefore, a high-frequency PWM signal of 8 kHz or higher is set in such a way that the listening area that feels noisy can be opened surely. The configuration of the right-opening circuit 52 is the same as that of the left-opening circuit 51, so the description is omitted. Next, the operation of the door opening device 30 when the left door 20a is opened will be described with reference to Fig. 1 showing the timing. When the left door 20a is opened, the door opening device 30 and the left door opening mechanism section 31 need not be operated. Therefore, when the left door switch 26a is turned off, that is, when the door closing signal is output, if the user pushes it with ta timing When the left door opening switch 27 is turned on, the drive signal is output to the control device 50 so that the left door opening mechanism section 31 will be energized. The driving and pushing member 37 of the left door opening mechanism portion 31 will be protruded, and the left door 20a will be pushed to release the adsorption of the magnet pad 2 ia. As shown in FIG. 7, the day-orderable left door switch 26 a will be turned on. Thereby, the door open signal is output. The control device 50 is configured such that if the door opening signal is received, the left door 20a will disengage the iron pad 21 a and open the door to a specific position, so as to be energized since then 98529.doc -15- 200535389 The specific time up to tc, for example, 20a in μ seconds is completely turned on. According to the above structure, the door opening can be surely opened because the door opening device is also switched off from the electric signal until the signal is passed until the time passes. First, because if the door open switch is turned on, for a certain period of time, for example, Λ, the pre-determined electricity is supplied to the electromagnetic solenoid within 3 seconds, so the right is stored according to the door closing time. people

,, the storage capacity of the load and other forces required to open the door to generate dualization ’, there is a failure to fully open due to the weak opening of,]

3 ’On the other hand, the food placed in the storage box may fall due to excessive I and strong pressure. Specifically, the force of opening the refrigerator door will be affected by the time elapsed after the door is closed. Since the temperature in the refrigerator is lower than when the door is closed shortly after the door is closed, the pressure in the refrigerator will be reduced by the compression of the air in the refrigerator, and the difference between the atmospheric pressure and the pressure in the refrigerator will change. Big. • Generally, the refrigerator ’s lower force than the outside line is due to the partial force when opening the door. [The force in the direction of closing the door is larger, and the force required to open the door is taken larger because the magnet pad is disengaged. Even if a specific voltage is uniformly supplied to the electromagnetic solenoid, the door cannot be opened or the opening speed is too fast. In addition, the force required to open the door will vary by the weight of the food loaded in the storage box, or by the viscosity of the dirt when it is attached to the magnetic pad. Therefore, according to the present invention, until the magnet pad with a large change in the force required to open the door is released, specifically until the door opening letter 98529.doc -16- 200535389 $ is output through the door switch, the door opening device will be Inevitably, power is applied, and after the door is opened, the force required to open the door does not produce a large change. The door can be opened most appropriately by continuously supplying power to the door opening device for a specific time. -Furthermore, although the left-right side-by-side refrigerator has been described in this embodiment, the same effect can be achieved even with one door in the present invention. It is preferable to set the upper limit value, for example, 15 seconds, from d to tb from when the door open switch is turned on until the door switch turns on the door open signal. And generally speaking • 0.2 ~? The reason for this is that if there is an unrestricted power supply in the state where an obstacle or the like cannot be opened in front of the door, the electromagnetic solenoid may be burned at a high temperature. Therefore, setting an upper limit value obtained in an experiment or the like in such a way that such a bad situation does not occur, thereby preventing the related bad situation. Furthermore, 'Because the timing of the detection_door is changed, the door opening force is not required compared to when the magnet pad is disengaged, so the pwM duty cycle can be changed and the output power can be reduced or it can be gradually reduced as shown by the dashed line in Figure 1. The output voltage. Next, other embodiments will be described with reference to FIG. 2, FIG. 8, and FIG. 9. The above-mentioned FIG. 2 shows the timing of the operation of the door opening device when one side of the door is open, and the above-mentioned FIG. 8 shows The top view of the refrigerator when the right door is opened. FIG. 9 is a top view of the refrigerator with the left door 4 opened when the right door is opened. Note that descriptions of the same components are omitted because they are repeated. When the right and left doors 20a and 20b are in the state of common door closing, turn on either side at td timing. 'Here is the right door switch 27b, then the right door opening mechanism 邛 32 will be energized, as shown in FIG. 8 If 26b turns on the door open signal at the te timing of opening the right door 20b, it will turn on the right door 20b by a specific time until "~", 98529.doc -17- 200535389 here. In this case, the right door switch 26b will be continuously on. Since the door will not be under negative pressure when the door is open on either side, and the magnet pads 21a and 21b on one side are not attracted to the rotating partition plate when compared with the force required when the door is closed at 14 Be reduced. Therefore, if the door is opened with the same force as when the door is closed, it may cause unfavorable situations such as the food being placed in the storage box being dropped due to the protruding member being pushed too strongly. Therefore, in this embodiment, the specific time from when the door is opened until the power is turned off is shortened to a specific time shorter than when the side door is closed. Specifically, 'If it is the other side door that is opened but not opened at tg timing, here is the left door 20a, and the user turns on the left door switch 27a, the solenoid 34 of the left door mechanism 31 will be opened. The power is applied to push the left door 20a by the pushing structure ㈣. Then, as shown in FIG. 9, if the magnet pad 2U is disengaged and the door opening signal of the #left door switch 26a is turned on at a time sequence, it can be energized for a shorter time than a specific time when the door is closed sequentially, here is energization G.05 seconds, thus, the xti sequence ends power on. Only according to the above-mentioned structure, when any side door is opened, the other door is opened so that the specific time from the opening of the door until the power is turned off is short and the door force is reduced to thereby optimally open the door. As shown in the solid line in FIG. 2, the PWM ratio can be changed to reduce the supply voltage to the electromagnetic solenoid 34 to, for example, 70% ~ ^, and then replace it with electricity. Short power-on time can also reduce the door opening force. 98529.doc 200535389 Also, when opening the door with the rotating partition 25 installed, here is when the left door 20a is opened, 'turning the rotating partition 25 is the most load-consuming, because even according to the shape of the left door of the refrigerator _2 & is in the connected state g, and there is also a case where the rotating partition plate * is rotating. Therefore, it is better that the right opening force f120b does not reduce the opening force to the left door 20a. Therefore, in the relevant case, a good car is only applicable to a door that does not have a rotating partition plate 25. ^ Further, another embodiment will be described with reference to FIG. 3 and FIG. 4. The above FIG. 3 represents the timing of the operation of the opening and closing device when the time from when the door switch is turned on to when the door switch is turned on is shorter than the power-on change time. The above-mentioned Fig. 4 is a timing chart of the operation of the door opening device when the time from when the door open switch is turned on until the door switch is turned on is longer than when the power is changed. Note that descriptions of the same components are omitted because they are repeated. As described above, the force required to open the door will vary greatly depending on the use of the refrigerator i, so it is better to change the opening force. However, in this example, the door opening switch is turned on until the door switch is turned on. The time until closing is φ. Specifically, as shown in FIG. 3, when any side door is opened, here is the left door opening 20a day guard, right because the user turns on the left door opening switch " a at a magic timing, the left door opening mechanism will be started. 31 is energized to push the left door 20a by the pressing member 37. At this time, the control device 50 measures in advance the time until the left door switch ^ is turned on, and compares this measurement time with a preset power-on switching time, for example, 0.5 seconds. In the case where the measurement time is shorter than the power-on switching time, it can be judged that the door opening force does not need to be particularly strong, so that the power is turned on from the left door switch 98529.doc -19- 200535389 as usual for a specific time, such as (M seconds, or short Time, for example, 0.05 seconds, and then the sequence ends. On the one hand, as shown in Figure 4, the measurement time from the sequence to the left door switch block is longer than the recitation + information, it can be determined that the door opening force is required, so that The tm sequence when the left door switch 26a is turned on, is energized longer than a specific time, such as ㈣, or energized and normal ^

Special time interval, such as 0;! Seconds, and end the power in sequence. According to the above configuration, the power-on room is changed according to the time required to open the door. Therefore, even if the force required to open the door changes due to the effect of the food load placed in the storage box, the door opening force of the door opening device can be optimally changed. . Furthermore, the same effect can be achieved for a refrigerator with one door in this embodiment, and instead of changing the power-on time, the output voltage can be increased or decreased by changing the pwM duty cycle.

The tk timing when 2 6 a is turned on is shorter than the specified time. The embodiment of the present invention described above is an example, and various combinations and numerical values exemplified may be optimized. In addition, the door opening device is not limited to a mechanism that protrudes the pressing member by energization of a solenoid, and various changes can be made. Hereinafter, other embodiments of the present invention will be described. 3 are perspective views showing a refrigerator according to another embodiment of the present invention, and FIG. 14 is a view showing a state where the refrigerator of FIG. 13 is opened. In FIGS. 13 and 14, the refrigerator body 1, which is a heat-insulating box having a well-known structure, is provided with a refrigerator compartment 2, a vegetable compartment 3, an ice-making compartment 4 in order from the top, and the internal temperature can be switched to a plurality. The switching chamber 5 and the freezing chamber 6 in each stage, and the ice making chamber 4 and the switching chamber 5 are arranged side by side. 98529.doc -20- 200535389 In the following, in order to avoid repetitive description, only the differences from the above embodiment will be described. The structure of FIG. 5 and FIG. 13 is different as follows. An operation section 28 capable of performing storage room temperature adjustment and the like is provided in front of the right door 20b, and the following shopping mall advertising mode can also be switched between the normal cooling mode and the shopping mall advertising mode by the operation of the operating section ". Second, The structure of Fig. 6 and Fig. 14 is added with a push switch 8m and a weight sensor 83. The top view of the refrigerator 1 when the left door 20a is opened is the same as that of Fig. 7. Next, regarding the control circuit of the present invention, The description is made with reference to the control block diagram 丨 6. The structure of FIG. 16 corresponds to the control block diagram of the above embodiment shown in FIG. 10 and below. In order to avoid repetitive description, only the parts different from the above embodiment will be described. 50 According to the opening states of the left and right doors 20a and 20b, a door opening signal or a door closing signal is input from the left door switch 26a and the right door switch 26b, and a driving signal is input from the left door opening switch 27a and the right door opening switch 27b. If the drive number k is input when the door-closing signal is input, the pwm duty cycle output by the load detection mechanism 80 described below will be determined, and the PWM signal will be Out to the left-opening circuit 5 丨 or right-opening circuit 52. Hereinafter, the left-opening circuit 5 1 will be described. One end of the electromagnetic solenoid 3 4 is 98529.doc -21-200535389, which is connected to a voltage doubler that is not shown in the figure. The positive output terminal of the circuit is connected to the non-polar side of the driving FET 61. In addition, two terminals 62 are connected in parallel to the two terminals of the electromagnetic solenoid 34. If the left door switch 26a is closed In the signal, the driving signal of the left door switch 2 is input to the control device 50, then the FET61 can be turned on by the P WM number from the control device 50 (the control power is, for example, DC 5V, and the driving power is, for example, 200 V DC) Next, in FIG. 16, the specific configuration of driving the FET 61a on and off is the same as that of the above-mentioned embodiment shown in FIG. 10, and therefore its description is omitted. Furthermore, the right-opening circuit 52 is omitted because of its The configuration is the same as that of the left door opening circuit 51, so its description is omitted. Next, the load detection mechanism 80 will be described. The load detection mechanism 80 is provided in the control device 50, and can detect the opening of the door based on the input value of each switch, sensor, etc. The negative consumption # ’In this embodiment, the presence or absence of food can be detected.

Specifically, the push switch 81 is provided on the bottom or back of the storage boxes 23a and 23b of the left door 20a and the right door 2 cents. If drinks or food such as plastic bottles are stored in the storage box, a food container or the like is used. By pushing the dust push switch 压, it is determined that food is placed. Alas, if the food is taken out, the pressure caused by the food is eliminated, so it can be judged that the food is not placed. % In this case, it can also replace the heart '. In the following refrigerator, you can also judge the useful food according to the following information: the user can arbitrarily place the food in the storage box 说, said food, hunting by the operating department The input of 28 and so on implements food management. < 叩 98529.doc -22- 200535389 "The operation of the door opening device 30 at the time of door" will be described with reference to Fig. 12 as a flowchart. In addition, for the simple explanation, the door opening of the left H2Ga is exemplified. •: When the left door 20a is turned on, it is not necessary to make the clothes opener 30 operate, so it is checked whether the left door switch is in the disconnected state. If it is in the off state, it proceeds to step S2. In step S2, when the left door switch is outputting a door closing signal, it is detected whether the user has pressed the left door switch 27a by pressing the left door switch. If it is in the ON state, it is considered that the user requests to open the left door 20a to thereby proceed to step S3. In step S3, the load consumed by opening the left door is detected by the load detection mechanism 80. μ ^, the mouth lies in the case where a heavy-loaded plastic bottle is placed in the storage box 23a to find food and the case where it is not placed, the force required when opening the door is not the same as the mouth. This can be changed according to the presence or absence of food. Door opening force. If the electromagnetic solenoid 34 is energized with a fixed output voltage, the opening degree will be narrower when it is placed, or when food is not placed, it may rotate with a hinge part (not shown) because the momentum is opened too quickly. The bumper bumps or the noise becomes louder and generates noise. Therefore, in step 84, it is determined whether the load consumed when the door is opened is heavy. In this embodiment, it is determined whether the food is placed in the material S23a. If food is placed, it is determined that the load when the door is opened is heavy. In step S5 ', if no food is placed, it is determined that the load at the time of opening the door is light, and the process proceeds to step s6. In step S5, the door opening force is increased. Specifically, the PWM duty ratio of the door opening device 30 is set relatively high, for example, 100%. On the other hand, the opening force is reduced in step S6 of 98529.doc 200535389. Specifically, the lower setting PWM duty ratio to the left-opening device 31 is set to, for example,. Then, in step S7, the left door opening device 31 is energized according to the respectively set pwM duty cycle. In this manner ', the left door 20a is pushed by the opening force of the door opening device% appropriately determined to open the left door 20a, and the power is cut off after a certain time, for example, 3 seconds. According to the above configuration, 'the opening force of the door opening device 30 is increased when the load is determined to be heavy when the door is opened' or the opening force of the door opening device 30 is decreased when the load is determined to be relatively light, thereby eliminating the need for excessive force or If it is too weak, it is most suitable. Because the load when opening the door is judged based on the presence or absence of food, and the load consumed when the door is actually opened can be detected, the door can be opened most appropriately. Furthermore, in the above configuration, the door opening device when the left door 20a is opened has the same power as "Brother, the right door 20b can also be made to perform the same action, and the power-on time can be extended or shortened as an increase of the door opening force. The method can further determine the door opening force according to the quantity of food. In the present embodiment, the description will be given. The negative section: structure is based on the re-test of the food placed in the storage box 1. The loader at the time of opening the door. Specifically, Reshiru:;: A23a, 23b is equipped with a weight sensor 83 on the bottom surface, as shown in Figure 16; The weight information of the detected wheel opens the door ^ == 50, and the load detection mechanism 80 judges the load according to the weight information ^ = ί. For example, 'if the detected weight is more than 1 kg', the weight is heavier If it is below, it is judged that the load is light. 98529.doc -24- 200535389 According to the above structure, the load applied to the doors 20a and 20b can be reliably detected, and the load when the door is opened can be detected more accurately. Therefore, the door can be opened most appropriately. Secondly, let's talk about other implementation forms . The time consumed in the present embodiment by lines of the left door 26a and right door switch 26b while the switching time of the output signals to close around the detection data by load door open.

The power to open the doors 20a, 20b of the refrigerator 1 is affected by the closing time. Since the temperature in the freezer is lower than when the door is closed soon after a certain amount of time has elapsed, the difference between the atmospheric pressure and the refrigerator's atmospheric force will increase at the same time. The body 5 has a large gap between the outside air pressure and the pressure in the refrigerator. This means that when the doors 20a and 20b are opened, the force biased in the closing direction is large. The magnet pads 2U and 21b are disengaged to open the door. The power is justified by the lack of it. Therefore, even if a specific voltage is uniformly supplied to the electromagnetic solenoid ^, sometimes the door cannot be opened or the door opening speed is too fast. Therefore, 'If the left and right door switches 26a, 26b jointly turn on the door closing signal for a certain period of time, for example, if it is more than an hour, it will become a negative pressure. Therefore, it is considered that the load of the opening and closing will increase, so that the opening force (for example, -M is empty The ratio is the most appropriate to open the door according to the change in the strength of the above structure. Γ: two :: two, if the specific time has not passed, it is considered that it will not become a negative pressure and will reduce the opening force (for example, the PWM duty cycle is Satoshi). The door opening force can be changed according to the closing time even if the refrigerator has not been opened for a long time and can be opened according to the closing time, so it can be entered. As a method of judging what is applied to the left side, an example will be described. Load detection mechanism 8 Compare the measurement time from when the person opened the door to the door 98529.doc -25- 200535389 until the door opening signal is output with a specific time set in advance, so that the load consumed when opening the door can be detected. Normally, set The left door 2a with the rotating partition plate 2 5a has a heavy load when opening the door. However, if dirt is attached to the magnet pad 21b of the right door bird without the rotating partition plate, it may be caused by The load caused by adhesion of fine open the right door becomes heavy, and therefore pre-opened from the case of the left door 2〇a more like ignored.

Therefore, during the opening operation of the left door 20a and the right door 20b, the time from when the door open switches 27a and 27b are operated until the door can be opened, specifically, until the left door switch 26a and the right door switch 2 讣 output the door open respectively The measurement time up to 俨 is recorded in the control device 50. Then, when the door opening switches 27a and 27 are operated, it is judged that the shorter the measurement time is, the lighter the door opening is. The reason is that the time before and after the door opening device 30 is usually used is short, so the dirt attached to the magnet linings 21a and 21b does not change, so the previous measurement time can be regarded as the load when the door is actually opened. Therefore, by the above structure, the door is surely opened from the lighter side. Next, another embodiment will be described. In this embodiment, when any one of the side door switches 26a, 26b outputs a door opening signal, and the other side door is opened, it is determined that the load at the time of opening the door is light. As mentioned above, because the two doors 20 are closed, the inside of the refrigerator becomes negative pressure. "The load at the time of opening the door will increase. However, any-the side door will not become negative pressure when the door is open." The load becomes smaller: Also, it is thought that the main reason for the load when opening the door is the disconnection of the magnet, Sichuan 98529.doc -26- 200535389, but because as long as the door is opened on either side, the two doors 20a '20b are facing The magnet pads 21a and 21b are already in the disengaged state, so the load when the door is opened can be reduced. Therefore, as shown in FIG. 15, in this embodiment, the left door 20a or the right door is opened: to detect whether the other side door is in the open state, and # has been opened, the load at the time of opening the door is considered to be small, and the opening force (for example, PWM 50% duty cycle). According to the above-mentioned configuration, 'in the left-to-right refrigerator, one side door is open.

In the case of the state, the door opening force can be optimally reduced because the door opening force can be reduced. 1 ', another embodiment will be described. In the present embodiment, the following configuration is explained. ② A shopping mall advertising mode is provided which does not need to cool the refrigerator and operates only specific electrical parts. 7 Shopping mall advertising mode is used to promote the sales of f in shopping malls. Generally, in shopping malls, there is no need to cool the refrigerator. Therefore, the shrinking machine is stopped but the refrigerator lights or fans are operated. In this formula, it is set to drive the door opening device 30, but because the refrigerator is not cooled, there is no negative pressure in the refrigerator. Therefore, if the door opening device 30 is operated with the same opening force as in the case of the cooling operation, the door opening speed will be too strong. In addition, because food is not placed in the mall, the load when opening the door is also light. Therefore, when using the operation section 28 to enter the advertising mode of the mall, it is judged that the load at the time of opening the door is lighter because the box has not become negative, and the door opening force is reduced (for example, P WM accounts for The air ratio is Gan 4 ❶), this is the most appropriate way to open the door. /, -Person, to explain other embodiments. A door 歹 'on the side of the rotating partition plate 25 is placed in the notebook. At the same time, it is judged that the load at the time of opening the door is more than two W, only to open Gu 98529.doc -27- 200535389 ^ The above mentioned 'Although the load at the time of opening the door depends on whether food is placed, whether there is negative pressure in the refrigerator or any side door Whether it is in an open state or the like may cause crossover, but rotating the rotary partition plate 25 may be one of the factors that cause a load when the door is opened. Therefore, although the left door 20a provided with the rotating partition plate 25 is surely opened: the opening force of the door opening device 30 is sighed, the rotation of the rotating partition plate 25 will take the most m, so sometimes the door opening force is caused by other factors. Increases and decreases are less desirable. Therefore, when the door on the side with the rotating partition plate 25 is opened: when only the other side door is opened, it is determined that the load when the door is opened is light, so the door on the side with the rotating partition plate 25 can be surely opened, and Since the side door of the refrigerator can be opened according to the specifications of the refrigerator, the door can be opened most appropriately. The above-mentioned configuration is an embodiment of the present invention, and various changes can be made. For example, the electric power to the electromagnetic solenoid 34 may be cut off after a specific time has elapsed, but it may be set to output a door open signal from the door switch after the specific time has elapsed until the specific time has elapsed. Hereinafter, another embodiment of the present invention will be described. Fig. 3 is a perspective view showing the refrigerator of the present invention, and Fig. 4 is a view showing a state in which the refrigerator of Fig. 3 is opened. In Figs. 13 and 14, in the refrigerator body, which is a heat-insulating box with a well-known structure, there are a refrigerator compartment 2, a vegetable compartment 3, an ice-making compartment 4, and the internal temperature can be switched to a plurality from above. The switching chamber 5 and the freezing chamber 6, the ice-making chamber 4 and the switching chamber 5 are arranged side by side in each stage. In the following, in order to avoid repetitive descriptions, only the differences from the above embodiments will be described. 98529.doc -28- 200535389 In Fig. 13, an operation section 28 is provided in front of the right door 20b, which can adjust the temperature of the storage room and the like. The top view showing the refrigerator when the left door 20a is opened is the same as the above figure. Next, the control circuit of the present invention will be described with reference to FIG. 16 of the control block diagram. The control device 50 inputs a door opening signal or a door closing signal from the left door switch 26a and the right door switch 26b according to the door opening states of the left and right doors 20a and 20b, and inputs a driving signal from the left door opening switch 27a and the right door opening switch 27b. In the following, in order to avoid repetitive descriptions, only the differences from the above embodiments will be described. Furthermore, the description of the right-opening circuit 52 is omitted because the configuration is the same as that of the left-opening circuit. However, the left-opening circuit 51 and the right-opening circuit are electrically independent from each other. The reason is that generally speaking The circuit is equipped with a noise filter circuit that includes a common mode choke coil that removes noise from the outside. If the door opening circuits 51'52 each have a common line, all current will flow to the common mode choke coil. This enlargement of the coil thereby ensures the current capacitance of the noise-receiver circuit. However, as shown in this embodiment, if it is placed in an electrically independent state, it is not necessary to increase the current capacitance miniaturization. The operation of the device 30 will be described. Moreover, since the operation of opening the left H20a and the right door 20b is the same, the left door 20a will be used as an example for explanation. Since the left door 20a is in the opened state, there is no need to make the left door opening device. 3 1 action 98529.bc -29- 200535389 as the reason, when the left door switch 26a outputs the door close signal, it will be turned off. If the user pushes the left door open When the switch 2 is turned on and turned on, the driving signal is output to the control device 50 so that the left door opening device 3 丨 will be energized. At this time, the pressing member 37 protrudes to push the left door 20a and release the adsorption of the magnet pad 21a. Therefore, as shown in FIG. 16, the left door switch 26a is turned on and the door open signal is output. The time from turning on the left door switch 27a to turning on the left door switch 26a is generally 0.2 seconds to 0_3 seconds. _ Control device 50 If the door opening signal is received, it can be inferred that the magnet pad 21 a is released and the door is opened to a specific position, and the power can be turned on for a specific time, for example, 0.1 seconds, so that the left door 20a is completely opened. The operation of the left and right door opening devices in the case where one side door opening device is operated when the other side door opening switch is operated will be described with reference to the diagram of the flow chart. Furthermore, here, when the left door opening device 31 is energized, the right door opening switch 27b is operated. As an example, in step S11, if the left door 20a and the right door 20b are on, it is not necessary to operate the door opening device 30, so it is detected whether the left door switch 26a and the right door switch 26b are Also in the off state (step su), if it is in the off state, proceed to step S 12. Furthermore, if one side door switch is operated when one side is on, the door opening device on the other side can be powered on as usual. .Of course, because the load consumed by the door opening is lighter on one side, the opening force can also be reduced. In step S12, it is detected whether the left door switch 27a or the right door switch 27b (step S12) is operated. , #If it is operated, it is judged that the user requests to open the door and proceeds to step s 13. 98529.doc -30- 200535389 In step S13, it is detected whether the door opening switch on the other side is operated, that is, the same as = detecting whether the door opening switches 27a, 27b are detected. Simultaneously operated (step s Η): If the operation is right, proceed to step S14, if not operated, proceed to step SB. In step S14, it is detected whether a specific time has elapsed since the door was opened from the side, for example, 0.02 seconds have elapsed (step S14). That is, even if the user knows that there is usually a time interval, only If the other side door switch is operated at a specific time after the one side door switch is operated, it can be considered as simultaneous operation. Therefore, if the other side door switch is not operated after the specific time, it is judged that the other side door switches are not operated at the same time, and the process proceeds to step S15, as above. The start of opening the door: the door opening device 30 on the side where the operation is being closed is energized, here is the left door opening device 3U: the door is turned on (step S15). On the other hand, when the specific time has not elapsed, Return to step s 1. 3. Furthermore, because the special time is the time when the door opening device 3G is not powered on, it is set to an excessively long time. No matter whether the door opening switch is operated or the door opening clothes are set to 3 0, it will not act. It may cause discomfort to the user, so it is better to set the car to 0.05 seconds or less. In step S16, it is detected whether φ η π 1 ^, j has been turned on to the left door opening device 31 (step S16). η recognize body, Shu t, piece goods, private measured after the energization starts from the left door switch "a turned Laid whether through sn. During the day, if a certain time has passed, the process proceeds to step S17. The opposite side door switch 27 is detected, and whether it is operated as a right door switch 27b during this power-on (step S17). If the operation proceeds to step s 1 8, private sister, t. „. Power is applied to the door opening device 30, which is the right door opening device 32, which is owed to the operation side (step S18). With 98529.doc -31-200535389, the door is opened for the opposite side. Even if it is used as a side-opening switch, the power of the door-opening device on the other side will not be implemented until the door-opening device on the other side is finished, so there is no need to repeatedly power on the door-opening devices, that is, It is possible to prevent the excessive current from flowing. Then, as described above, the left and right door opening devices may be operated simultaneously by the user's operation. The operation at the same time will be described below. In step S19, it is determined that the left and right doors 2 are opened. a. Bird load (step Lu) As an example, since the load usually generated by rotating the rotating partition 25 on the side 4 is large, it is determined that the left door 2 with the rotating partition 25 is opened. 〇a Time The load is heavy. In step S20, power is applied from the side of the door judged to be lighter in step S19 (step S20). Here, when the right door 20b is not provided with the rotating partition plate 25, the door is opened. The load is lighter than that of the left door 20a, so the right door opening device 32 is energized to open the right door 20b. At this time, as shown in FIG. 15, even though it can be considered at the same time, it is still earlier than the right opening φ door switch 2 The left door opening switch 27a can be operated in several ways, and the right door 20b can also be turned on from the right door opening device 32. In step S21, the same as step S16, in order to prevent the left and right door opening devices 3 1, 32 from being repeatedly energized, here It is detected whether the energization of the right door opening device 32 has been completed (step S21), and if the energization is completed, it proceeds to step §21. In step S22, the energization of the door with the heavy load judged by step S16 is started (step S22). Here, in order to open the left door 20a, the left door opening device 31 is energized. In this way, the reason for opening the door on the lighter side is as follows: as in this embodiment 98529.doc -32- 200535389 Η The switch is turned on until a certain time elapses. Make the door opening device pass through the h-shape, because if the door switch is not turned on, it will not start to energize the door opening on the other side. If the door side with heavy load is energized, it will take time until the door switch is turned on. G · 5 seconds ~ U seconds), which makes it difficult to open other side doors, which may cause discomfort to the user. Therefore, even when the door open switches 27a and 27b are operated at the same time, the door can be opened automatically.

The door is opened with a lighter load, so that it does not cause discomfort to the user, and the door opening device 30 can be constantly operated to open the door. According to the above configuration, even if the other side door opening switch is operated while the side door opening device is being energized, the other side door opening device will not be energized until the power is turned off, so it is possible to prevent the left and right door opening devices from being repeatedly energized, thereby avoiding a circuit breaker of a commercial power supply. Action. In addition, when the door opening switch is operated at the same time, the door is opened by the rotating partition plate which is not provided with a load when the door is opened, so the door can be opened by the side with a lighter load, so it does not cause discomfort to the user. Sense, can surely make the door opening device operate. Next, as a method of judging the load applied to the left and right doors, other embodiments will be described. A load detection mechanism 80 is provided in the control device 50, and the load at the time of opening and closing can be detected by the input value of each switch or sensor, etc. In this embodiment, the presence or absence of food can be detected. The reason is that the case where food such as a heavy-duty plastic bottle is placed in the storage box 23a and the case where it is not placed, the load at the time of opening the door will be different, and the refrigerator shape without the rotating partition plate 25 Needless to say, even if the refrigerator is provided with the rotating partition plate 25 as in this example of 98529.doc -33-200535389, the load may sometimes change when the door is opened without a side. Serious situation. Specifically, 'the push switch 81 is provided on the bottom or back of the health deposits 23a, 23b of the left door 20a and the right door 20b. When a beverage or food such as a plastic bottle is stored in a storage box, the food container The iso-push switch 81 is pressed by Z to determine that food is placed. On the contrary, when the food is taken out, the pressure caused by the φ Genkou is eliminated, so it can be judged that the food is not placed. In addition, an infrared sensor 82 may be used instead of the push-type switch 81, and in the following refrigerator, the presence or absence of food can be determined based on the following information: the user can be arbitrarily placed in the storage boxes 23a, 23b The food is a refrigerator that performs food management by input from the operation unit 38 and the like. In order to operate in step S19, the presence or absence of food in the left door 20a and the right door 20b is detected by the load detection mechanism ，, and it is judged that food is placed on one of the left and right doors 20a and 20b, and it is judged in the other side door as When no food is placed, φ judges that the load on the door without food is light. In addition, when no food is placed on the left and right doors 20a and 20b, or when food is placed on both, it can be determined that the door without the rotary partition plate 25 has a heavy load. According to the above configuration, since the loads of the left and right doors can be separately detected according to the usage conditions of the user, the door can be surely opened from the lighter side. Furthermore, when the presence or absence of food can be detected plurally, the load can also be judged based on the number of foods. In addition, not only can the food be provided, but also a weight sensor 83 can be provided in the storage box 23 & 2 to complement the bottom surface. As shown in FIG. 7, if the weight sensor 98529.doc -34- 200535389 is used according to this 3 The weight of the test specimens, which is determined by the tester, can be used to determine the load applied to the left and right doors 20a and 20b, which can more accurately detect the load when the door is opened compared to the presence or absence of π. Guang, as a method of judging the load applied to the left and right doors, other actual discs ... brother Ming. The load detection mechanism 80 compares the measurement time from the time when the door was opened last time to the time when the door opening signal is output with the preset special level: it can detect the load applied to the door when it is opened. In general, the left door 2 with the rotating partition plate 25 is provided with a heavy load. However, if dirt adheres to the magnet lining of the right ⑽b where the rotating partition plate 25 is not provided, the adhesive force may cause The load when the right door 20b is opened becomes heavier, so it is not ideal to open it from the left door 2Ga in advance. Therefore, the respective door opening switches 27a and 27b during the previous door opening operation of the left door 20a and the right door bird are affected. The time until the door is opened, specifically, the measurement time until the left door switch 26a and the right door switch 26b respectively output the door open signal is recorded in the control device 50. When the door opening switches 27a and 27b are operated, it is determined in step S19 that the measurement time is short: the load at the time of opening the door is light. ^ The reason is that the time before and after the door opening device 30 is usually used is short, so the dirt attached to the magnet pads 21a and 21b does not change, and the previous measurement time can be regarded as the load when the door is actually opened. Therefore, according to the above configuration, the door can be surely opened from the lighter side. In addition, the above-mentioned configuration is an embodiment of the present invention, and various combinations and numerical values exemplified according to the form of the refrigerator can be most appropriately used. For example, the power on of the opening device 30 can be set from the time when the door switch is turned on until 98529.doc -35- 200535389 ends after a certain time has elapsed. For example, 1 second. Because of the method of the present invention, it can be adapted to the left-right refrigerator of the panel 25, A ', and the rotating separation can be used as the door opening switch on the other side or at the same time. + [Industrial Applicability] of the door opening device at the time of opening and closing of the door at first: As described above, according to the present invention, the door opening device can be used, and is most suitable for various refrigerators having the door opening device. 5 As described above, according to the present invention, the door opening device can be optimally used, and thus can be applied to various refrigerators provided with the door opening device. As mentioned above, according to this material, even when the door-opening switch on the other side is turned on, or when the door is opened at the same time, "Poetry door-opening switch can be surely opened, so it can be compared with all kinds of door opening devices." Brief description of the drawings] Phase diagram 1 is a timing chart showing the operation of the door opening device of the present invention. Figure 2 is a timing chart showing the operation of the left and right door opening mechanism sections of the present invention. Figure 3 is a diagram showing the shorter measurement time of the present invention. Timing chart of the opening operation in the case. FIG. 4 is a timing chart of the opening operation in the case where the measurement time of the present invention is long. FIG. 5 is a perspective view of the refrigerator of the present invention. A perspective view of the state. Figure 7 is a top view of the refrigerator when the left door is opened. 98529.doc -36- 200535389 Figure 8 is a top view of the refrigerator when the right door is opened. Figure 9 is a view when the left door is opened with the right door open. Top view of a refrigerator. Fig. 10 is a control block diagram of the present invention. Fig. 11 is a longitudinal sectional view showing a door opening device of the present invention. Fig. 12 is a view showing the operation of the door opening device of the present invention. Flowchart of Figure 13 showing a perspective view of a refrigerator system according to the present invention.

FIG. 14 is a perspective view showing a state where the door of FIG. 13 is opened. Refrigerator at the time Fig. 15 is a plan view showing the left door opened with the right door opened. Flow chart of operation Fig. 16 is a control block diagram of the present invention. Figure 17 shows the door opening device of the present invention. [Description of main component symbols]

20a 20b 21a, 21b 22a, 22b refrigerator body left door right door magnet gasket beads 23a, 23b 25 26a 26b 27a 27b storage box rotating partition n left door switch right door switch left door switch right door switch 98529.doc -37- 200535389 30 open the door Device 31 Left door opening mechanism portion 32 Right door opening mechanism portion 34 Electromagnetic solenoid 37 Push member 50 Control device 80 Negative detection mechanism 81 Push switch 82 Infrared sensor 83 Weight sensor 98529.doc -38-

Claims (1)

200535389 10. Scope of patent application: ^ The special feature of the box is that it has: a door that is freely provided on the opening of the front surface where the body is stored; if it is powered on by a drive source, a pushing member is pushed to open the door Door opening device; a door opening switch that outputs a driving signal driven by the opening and closing device by the user's operation; and a door switch that detects the above-mentioned door switch state and turns on the door opening signal and the door closing signal. In the state of the door closing signal, the door opening device outputs a driving signal to start energizing the door opening device, and after the door opening signal is output by the door switch, the energization continues until a specific time elapses. 2 · A kind of ice phase, characterized in that: it is provided with a left and a right-handed left door and a right-handed door that are freely provided on the front opening of the main body storage room; a left-handed device and a right-handed device that push the left and right facades to open the door respectively; The left and right switches of the left and right driving signals that the left and right door opening devices drive are respectively output by the user's actions; and the left door that detects the switching state of the left and right doors and outputs the respective left and right door signals is output. Switch and right door switch; in the state that the left and right door switches are outputting a door closing signal, a drive signal is output from the one of the above door opening switches, then the corresponding door opening attack is started to be private, and by the above corresponding door switch After the door open signal is output, the energization is continued with a specific voltage until a specific time elapses, and if the door open signal is output from either of the left and right door switches, the If shape of the above left door open switch or right door open output drive signal k, with the corresponding left door switch or right door switch output 98529.doc 200535389 After the number of passes until the energizing continues until the time is shorter than the time specified above, or a voltage below a specific voltage. 3 · If the refrigerator is called item 1 or 2, when the door opening device is energized, when the time after outputting the drive signal until the door opening signal is output is less than the preset energization change time, shorten the specific time or reduce the energization voltage And make it energized. The ice phase is characterized in that: a left and a right-handed left door and a right-handed door which are freely provided on the front opening of the main body storage room; and a left-handed device and a right-handed device that open the door by pushing the left and right doors respectively by power; The left and right door switches that enable the respective left and right door opening devices to be energized by the operation of the user; and a load detection mechanism that detects the load on the left and right door when the door is opened; When the door is opened by the load detection mechanism when the load is judged to be light, the door opening force of the left and right door opening devices is reduced to open the door. In the refrigerator of the moon-length item 4, the load detection mechanism detects the load on the left and right doors when the food is placed in the storage container provided on the door of either or both sides. In the refrigerator of Yueqiu 4 ', the negative detection mechanism is equipped with a weight sensor in the storage container provided on the door of both sides or any θ side, and the left and right doors are detected when the door is opened based on the weight detected by the gravity sensor. What to suffer 0 σ month term 4 refrigerator, in which the load detection mechanism has left door switches and right door switches that detect the left and right door switch states respectively, according to the left 98529.doc 200535389 right door switch detection of the door closing of both sides Time detects the load on the left and right doors when they are opened. 8. The refrigerator as described in claim 4, wherein the load detection mechanism is provided with a left door switch and a right door switch that detect the switch-like complaints of the left and right doors. According to the previous door open switch fork, it is operated until the door open state is detected by the door switch on the operating side. The measurement time measures the load on the door. 9. · A refrigerator, comprising: left and right side-opening left and right doors that are freely provided on the front opening of the main body storage room, and a left door opening device and a right door that open the door by pushing the left and right doors respectively by power. A left door switch and a right door switch that output drive signals to energize the respective left and right door opening devices through user operations; and a left door switch and a right door switch that detect the above left and right door switch states respectively; When the left and right door switches detect that either door is open and the other door is opened, it is judged that the load at the time of opening and closing is light, and the door opening force of the left door opening device or the right door opening device is reduced. '10. A refrigerator comprising: a left and a right-handed left door and a right-handed door that are freely provided on the front side of the main body storage compartment and open π; and a left door opening device that is opened by pushing the left and right doors respectively by applying electricity. And right door opening devices; left door switches and right door switches that precisely drive the left and right door opening devices by outputting driving signals by the user's operation; and a store display mode that can operate only certain electrical parts without cooling the refrigerator. —In the store display mode, the door is opened by both sides or any of the parties: when the door is closed, it is judged that the load at the time of opening the door is light, which reduces the opening force of the left 98529.doc 200535389 door opening device or the right door opening device. . 1 1 · The refrigerator according to any one of claims 4 to 10, in which a rotating partition plate which is rotated according to the opening and closing action of the door and is closed when the door is closed is provided on the left door or the right door. When there is a door on the side of the rotating partition plate, it is judged that the load when opening the door is light and the door is opened. 1 2 · A refrigerator, comprising: a left and a right-handed left door and a right-handed door that are freely provided on the front opening of the main body storage room; a left-hand opening device that opens the door by pushing the left and right doors separately by being energized; and A right door opening device; and a left door switch and a right door opening switch that output drive signals to energize respective left and right door opening devices through user operation; when the other door opening switch is operated while the one door opening device is energized, After the door-opening device is powered on, the door-opening device of the other party starts to be energized. 13. The refrigerator of claim 12, wherein the left and right door switches are subjected to the same time. The h-shaped day $ of operation, the door opening device on the side of the door with a lighter load since the door opening day starts to energize. When the switch operates and rotates, and closes the opposing gap when the door is closed, when the left and right door opening switches are operated at the same time, the door opening device is energized from the aspect where no rotating partition plate is provided. If the refrigerator of item 13 is provided, the left door or the right door is provided with a door according to 15. The above-mentioned detection mechanism for opening the left and right doors is provided, and the refrigerator is installed on the door as required by the left and right door switches. In the case where the load detection machine that is subjected to the load is simultaneously operated, it is self-powered. 98529.doc 200535389 1 6. The refrigerator according to claim 15, wherein the load detection mechanism is provided with a left door switch and a right door switch that detect the switch status of the left and right doors, and is operated according to the previous door switch detection until the door switch detection on the operation side. Measure the time until the door is opened to detect the load on the door. 98529.doc