CN219889852U - Refrigerator with a refrigerator body - Google Patents
Refrigerator with a refrigerator body Download PDFInfo
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- CN219889852U CN219889852U CN202320940190.XU CN202320940190U CN219889852U CN 219889852 U CN219889852 U CN 219889852U CN 202320940190 U CN202320940190 U CN 202320940190U CN 219889852 U CN219889852 U CN 219889852U
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- control unit
- load
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- 238000001514 detection method Methods 0.000 claims abstract description 9
- 238000009434 installation Methods 0.000 claims description 7
- 230000007935 neutral effect Effects 0.000 claims description 2
- 230000005611 electricity Effects 0.000 abstract description 2
- 230000007423 decrease Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Abstract
The utility model provides a refrigerator, which comprises a refrigerator body, a door body, a refrigerator liner, a load and a controller, wherein the refrigerator body is provided with a door body; an assembly space is formed between the tank liner and the tank body; the load is arranged in the assembly space and is electrically connected with the power supply; the controller is connected in the load to the operation of control load or stop, and the controller includes the main control board and is connected in the control circuit of main control board electricity, and control circuit includes: the main control unit is electrically connected with the main control board; the zero crossing circuit is electrically connected with the main control unit and the power supply and is used for detecting a zero crossing point of the power supply; the first switch circuit is electrically connected with one end of the main control unit and one end of the load, and a first relay is arranged in the first switch circuit; the second switch circuit is connected in parallel with the first switch circuit, a second relay is arranged in the second switch circuit, and a load is electrically connected to the connecting ends of the first switch circuit and the second switch circuit; and after the main control unit receives the zero-crossing detection signal sent by the zero-crossing circuit, the first relay and/or the second relay are/is opened or closed.
Description
Technical Field
The utility model relates to the technical field of household appliances, in particular to a refrigerator.
Background
At present, more and more loads are loaded on refrigerators in the market, because common loads are controlled by a single relay, larger impact current can be generated at the moment of powering on certain loads, if the impact current is larger, electromagnetic interference can be generated to influence the operation of the loads, and therefore, the requirements on the performance of the relay and the loads are higher and higher, a solution for detecting the zero crossing point of input voltage by adding a zero crossing circuit is derived in the industry, the load is started at the zero crossing point of the voltage, and the impact current can be reduced. However, because different relays have different closing times, different driving voltages can also cause different closing times of the relays, so that only a single relay and a zero-crossing circuit are arranged to perform synergistic effect, the problem of larger error exists, and loads and other electrical elements in the refrigerator cannot be effectively protected.
Disclosure of Invention
The present utility model solves at least one of the technical problems in the related art to a certain extent.
Therefore, the utility model aims to provide the refrigerator, two relays are arranged on the original control circuit for controlling the load of the zero crossing circuit, the on-off of the load is controlled after the two relays are connected in parallel, one of the relays is connected in series with a thermistor, the impact current can be reduced by arranging the thermistor, and the on-off sequence and time of the two relays are controlled by the control circuit arranged as above through the main control unit, so that the electric elements and the load of the refrigerator are protected, and meanwhile, the impact current is reduced.
The refrigerator according to the present utility model includes: the box body, the door body, the box liner, the load and the controller; a mounting space is formed in the box body, and a box opening communicated with the mounting space is formed at the front side of the box body; the door body is rotatably connected to the box body and is used for opening or closing the box opening; the box liner is arranged in the installation space, and an assembly space is formed between the box liner and the box body and is used for installing components; the load is arranged in the assembly space and is electrically connected with the power supply; the controller is connected in the load to the operation of control load or stop, and the controller includes the main control board and is connected in the control circuit of main control board electricity, and control circuit includes: the main control unit is electrically connected with the main control board; the zero crossing circuit is electrically connected with the main control unit and the power supply and is used for detecting a zero crossing point of the power supply; the first switch circuit is electrically connected with one end of the main control unit and one end of the load, and a first relay is arranged in the first switch circuit; the second switch circuit is connected in parallel with the first switch circuit, a second relay is arranged in the second switch circuit, and a load is electrically connected to the connecting ends of the first switch circuit and the second switch circuit; and after the main control unit receives the zero-crossing detection signal sent by the zero-crossing circuit, the first relay and/or the second relay are/is opened or closed.
The utility model is provided with a control circuit in a refrigerator, wherein the control circuit is internally provided with two relays, the on-off sequence and time of the two relays are controlled by a main control unit, specifically, the control circuit comprises the main control unit, a zero crossing circuit, a first switch circuit and a second switch circuit which are electrically connected with the main control unit, the second relay in the second switch circuit is connected with the first relay and a thermistor which are connected in series in the first switch circuit in parallel, the thermistor is used for reducing impact current, the on-off of the first relay and the second relay is controlled by the main control unit, the on-off of a load is controlled, and meanwhile, the on-off sequence and time of the first relay and the second relay are controlled, so that the electric elements and the load of the refrigerator can be protected.
In some embodiments of the utility model, the first switching circuit comprises: the base electrode of the first triode is electrically connected to the main control unit; the first end of the first relay is electrically connected to the collector electrode of the first triode; and the thermistor is electrically connected to the second end of the first relay.
In some embodiments of the utility model, the second switching circuit comprises: the base electrode of the second triode is electrically connected to the main control unit; and the second relay is connected in parallel with the third end of the first relay and the thermistor.
In some embodiments of the utility model, the first terminal of the second relay is electrically connected to the third terminal of the first relay, and the load is electrically connected to the third terminal of the first relay and the connection terminal of the first terminal of the second relay.
In some embodiments of the present utility model, the first switch circuit includes a first resistor electrically connected between the main control unit and the base of the first triode.
In some embodiments of the present utility model, the first switching circuit includes a second resistor, a collector of the first triode is electrically connected to the ground signal, one end of the second resistor is electrically connected between the first resistor and a base of the first triode, and the other end of the second resistor is electrically connected to the ground signal.
In some embodiments of the present utility model, the second switching circuit includes a third resistor electrically connected between the main control unit and the base of the second triode.
In some embodiments of the present utility model, the second switching circuit includes a fourth resistor, one end of the fourth resistor is electrically connected between the third resistor and the second triode, and the other end of the fourth resistor is electrically connected between the emitter of the second triode and the ground signal.
In some embodiments of the present utility model, a first end of the zero crossing circuit is electrically connected to a live wire of the power supply, a second end of the zero crossing circuit is electrically connected to a zero line of the power supply, and a third end of the zero crossing circuit is electrically connected to the main control unit.
In some embodiments of the utility model, one end of the thermistor is electrically connected to the hot line of the power supply and the other end of the load is electrically connected to the neutral line of the power supply.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the related art, the drawings that are required to be used in the embodiments or the related technical descriptions will be briefly described, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.
Fig. 1 is a schematic view of a structure of a refrigerator according to an embodiment of the present utility model;
fig. 2 is a schematic circuit connection diagram of a control circuit of a refrigerator in one embodiment of the prior art;
fig. 3 is a schematic structural view of a controller of a refrigerator in accordance with an embodiment of the present utility model;
fig. 4 is a schematic structural view of a control circuit of a refrigerator in accordance with an embodiment of the present utility model;
fig. 5 is a circuit connection schematic diagram of a control circuit of a refrigerator in an embodiment according to the present utility model;
fig. 6 is a circuit connection schematic diagram of a first switching circuit of a refrigerator according to an embodiment of the present utility model;
fig. 7 is a control flow diagram of a main control unit of a refrigerator according to an embodiment of the present utility model;
fig. 8 is a schematic view showing a state in which a first relay of a refrigerator is closed in an embodiment according to the present utility model;
fig. 9 is a schematic view showing a state in which first and second relays of a refrigerator are closed in accordance with an embodiment of the present utility model;
fig. 10 is a schematic view of a state in which a second relay of the refrigerator is closed in an embodiment according to the present utility model;
in the above figures: a case 1; a top plate 11; a base 12; a side plate 13; a door body 2; a tank liner 3; a load 4; a controller 5; a control circuit 51; a zero crossing circuit 52; a fifth resistor 52a; a first diode 52b; a second diode 52c; a photocoupler 52d; a third transistor 52f; a sixth resistor 52m; a seventh resistor 52n; an eighth resistor 52s; a ninth resistor 52t; a first switching circuit 53; a first transistor 53a; a first relay 53b; a thermistor 53c; a first resistor 53d; a second resistor 53c; a second switching circuit 54; a second transistor 54a; a second relay 54b; a third resistor 54c; a fourth resistor 54d; a zero line 61; a firing line 62; a main control unit 7.
Detailed Description
The present utility model will be specifically described below by way of exemplary embodiments. It is to be understood that elements, structures, and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.
Hereinafter, embodiments of the present utility model will be described in detail with reference to the accompanying drawings.
Referring to fig. 1 to 4, the present utility model provides a refrigerator including: the box body 1, the door body 2, the box liner 3, the load 4 and the controller 5.
The front side of the cabinet 1 is a side facing a user when the refrigerator is in use, and the rear side of the cabinet 1 is a side opposite to the front side of the cabinet 1.
The box 1 includes roof 11, base 12, backplate, curb plate 13 and door body 2, and the backplate sets up in the rear side of box 1, and roof 11 sets up in the top of backplate, and base 12 sets up in the bottom of backplate, and the direction of height of box 1 between roof 11 and the base 12 is first direction, and curb plate 13 is connected in the left and right sides of backplate along first direction.
The top plate 11, the base 12, the back plate and the side plates 13 are mutually connected to form a box body 1 with a front side opening, and the front side opening of the box body 1 is a box opening for putting articles.
An installation space is formed in the box body 1, and a box opening is communicated with the installation space.
The door 2 is rotatably connected to the case 1 for opening or closing the opening.
The box liner 3 is arranged in the installation space, and a storage room communicated with the box opening is formed in the box liner 3 and used for storing articles.
An assembly space is formed between the tank 3 and the tank body 1 for installing components.
A load 4 is arranged in the assembly space, the load comprising.
The controller 5 is electrically connected to the load 4 and the electric components disposed in the assembly space, for controlling the operation or stop of the load 4 and the electric components.
The controller 5 comprises a shell and a main control board arranged in the shell.
The main control board is electrically connected with a control circuit 51, and the control circuit 51 is electrically connected with the load 4 and is used for controlling the operation or stop of the load 4.
The current common load 4 in the market is controlled by a single relay, larger impact current can be generated at the moment of powering on certain loads 4, if the impact current is too large, electromagnetic interference can be generated to influence the operation of the loads 4, two relays are arranged on the basis of adding a control circuit 51 of a zero crossing circuit 52, the on-off sequence and time of the two relays are controlled to control the on-off of the loads 4, and meanwhile, a thermistor 53c is connected in series with one of the two relays to reduce the impact current and protect the loads 4 and electrical elements.
The control circuit 51 includes a main control unit 7, a zero crossing circuit 52, a first switching circuit 53, and a second switching circuit 54.
The main control unit 7 is electrically connected to the main control board.
The zero crossing circuit 52 is electrically connected to the main control unit 7 and the power supply, and is configured to detect a zero crossing point of the power supply, and transmit a detected zero crossing detection signal to the main control unit 7.
The first switch circuit 53 is electrically connected to the main control unit 7 and one end of the load 4, and a first relay 53b is disposed in the first switch circuit 53.
The second switch circuit 54 is connected in parallel to the first switch circuit 53, a second relay 54b is disposed in the second switch circuit 54, and the load 4 is electrically connected to a connection terminal of the first switch circuit 53 and the second switch circuit 54.
The main control unit 7 is configured to process the zero crossing detection signal detected by the zero crossing circuit 52 and control the opening or closing of the first relay 53b and/or the second relay 54b, and control the on-off of the load 4.
Referring to fig. 5 to 6, in particular, the first switching circuit 53 includes a first transistor 53a, a first relay 53b, and a thermistor 53c.
The first transistor 53a is electrically connected between the main control unit 7 and the first relay 53b.
The base electrode of the first triode 53a is electrically connected to the main control unit 7, the collector electrode of the first triode 53a is electrically connected to the first end of the first relay 53b, and the emitter electrode of the first triode 53a is electrically connected to a ground signal.
The thermistor 53c is electrically connected between the first relay 53b and the second relay 54b, i.e. the thermistor 53c is electrically connected between the second end of the first relay 53b and the second end of the second relay 54b, and one end of the thermistor 53c is electrically connected to the live wire 62 of the power supply.
The fourth terminal of the first relay 53b is electrically connected to a low-voltage power supply.
Since the resistance of the thermistor 53c is changed due to the temperature change, and the thermistor 53c has an initial resistance, when the load 4 is powered on, the surge current decreases after flowing through the thermistor 53c, and the resistance of the thermistor 53c decreases with the temperature rise, so that the operation after the load 4 is not affected.
The first switch circuit 53 further includes a first pull-down resistor connected between the main control unit 7 and the first triode 53a, for preventing the first triode 53a from being damaged due to direct current flowing into the first triode 53a when the cross distortion of the first signal output from the main control unit 7 into the first switch circuit 53 and the first input current are too large.
The first pull-down resistor includes a first resistor 53d and a second resistor 53c, where the first resistor 53d is electrically connected between the main control unit 7 and the base of the first triode 53a, and is used to set a bias voltage to reduce the static or dynamic signal current.
One end of the second resistor 53c is electrically connected between the first resistor 53d and the base of the first triode 53a, and the other end of the second resistor 53c is electrically connected between the emitter of the first triode 53a and the ground signal for shunting the first control signal, so that the input impedance is reduced, and the first triode 53a is turned off rapidly and reliably when no signal is input.
The second switch circuit 54 is connected in parallel to the first switch circuit 53, a second relay 54b is disposed in the second switch circuit 54, one end of the load 4 is electrically connected to the third end of the first relay 53b and the connection end of the first end of the second relay 54b, and the other end of the load 4 is electrically connected to the zero line of the power supply.
By providing the first relay 53b and the second relay 54b, the rush current is reduced by the cooperation of the first relay 53b and the second relay 54b, protecting the load 4 and other electrical components.
The second switching circuit 54 includes a second transistor 54a and a second relay 54b electrically connected to each other.
The second relay 54b is connected in parallel to the first relay 53b and the thermistor 53c, and the load 4 is connected to the connection terminals of the first relay 53b and the second relay 54b.
The third terminal of the second relay 54b is electrically connected to a low voltage power supply.
The base electrode of the second triode 54a is electrically connected to the main control unit 7, the collector electrode of the second triode 54a is electrically connected to the second relay 54b, and the emitter electrode of the second diode is electrically connected to the ground signal.
The second switch circuit 54 further includes a second pull-down resistor electrically connected between the main control unit 7 and the second triode 54a, for preventing the second triode 54a from being damaged due to the fact that the second triode 54a directly flows into the second triode 54a when the cross-over distortion of the second control signal output from the main control unit 7 into the second switch circuit 54 and the second input current are too large.
The second pull-down resistor includes a third resistor 54c and a fourth resistor 54d, and the third resistor 54c is electrically connected between the main control unit 7 and the base of the second triode 54a, for setting a bias voltage to reduce the static or dynamic signal current.
One end of the fourth resistor 54d is electrically connected between the third resistor 54c and the second triode 54a and the base, and the other end of the fourth resistor 54d is electrically connected between the emitter of the second triode 54a and the ground signal for shunting the second control signal, so that the input impedance is reduced, the second triode 54a can be rapidly turned off when no signal is input, and the second triode 54a is protected.
Referring to fig. 7 to 10, the first relay 53b is provided with a first normally open contact, one end of which is defined as the second end of the first relay 53b, and the other end of which is defined as the third end of the first relay 53b, and when the first normally open contact is closed, the first relay 53b is in a closed state.
The second relay 54b is provided with a second normally open contact, one end of which is defined as a first end of the second relay 54b, and the other end of which is defined as a second end of the second relay 54b, and when the second normally open contact is attracted, the second relay 53b is in a closed state.
The specific process of controlling the on-off of the load 4 by the control circuit 51 is as follows:
when the main control unit 7 receives the information that the load 4 needs to be opened, the zero crossing detection signal sent by the zero crossing circuit 52 is received, whether the zero crossing point exists in the voltage signal sent by the power supply is judged, and the opening or closing of the first relay 53b and/or the second relay 54b is controlled.
The main control unit 7 is specifically configured to:
when the power supply has zero crossing points, a first control signal is sent to the first switch circuit 53 to control the first triode 53a to be conducted and the first relay 53b to be closed, namely the second end of the first relay 53b is controlled to be connected with the third end of the first relay 53b;
when the first relay 53b is closed for a first preset time, a first control signal is sent to the second switch circuit 54 to control the second triode 54a to be conducted, and the second relay 54b is controlled to be closed, namely, the first end of the second relay 54b is controlled to be connected with the second end of the second relay 54b;
when the second preset time elapses, the first relay 53b is controlled to be turned off, and the thermistor 53c and the first relay 53b are no longer involved in the conduction operation of the load 4.
By providing the first switch circuit 53, the thermistor 53c can reduce the surge current in a period of time when the load 4 is controlled to be on, thereby reducing the possibility of damage to the load 4 caused by the surge current.
The settings of the first relay 53b, the thermistor 53c, the first preset time and the second preset time are adjustable according to the loads 4 with different parameters, which are not particularly limited.
Since some loads 4 generate relatively large impact current at the moment of power-on, the relatively large current generates electromagnetic interference to affect the normal operation of the loads 4, the first preset time is set.
After the first relay 53b is closed, the thermistor 53c is electrically connected with the main control module, and in a first preset time from the first control signal output by the main control unit 7 to the thermistor 53c, the impact current of the first control signal can be reduced when the first control signal passes through the thermistor 53c.
Since the resistance of the thermistor 53c gradually decreases with increasing temperature, when the impact current decreases to such an extent that the load 4 can operate after the first preset time elapses, the main control unit 7 controls the second switch circuit 54 to send a second control signal to control the second relay 54b to be closed, so that the circuit between the load 4 and the main control unit 7 is turned on.
At this time, the first relay 53b is still kept in a closed state, and when the impact current no longer affects the normal operation of the load 4 after the operation is performed for a second preset time, the control unit controls the first relay 53b to be turned off, and after the first relay 53b is turned off, the first relay 53b and the thermistor 53c no longer participate in the operation of the load 4.
By arranging the process, the impact current generated at the moment of electrifying the load 4 can be reduced, and the load 4 or other electrical elements are further protected.
The first end of the zero crossing circuit 52 is electrically connected to the live wire 62 of the power supply, the second end of the zero crossing circuit 52 is electrically connected to the zero line 61 of the power supply, one end of the load 4 is electrically connected to the zero line of the power supply, and the load 4 is electrically connected to the second end of the zero crossing circuit 52.
The third terminal of the zero crossing circuit 52 is electrically connected to the main control unit 7.
The interrupt pin of the main control unit 7 is electrically connected to the third end of the zero crossing circuit 52, and the interrupt pin in the main control unit 7 can receive the zero crossing detection signal transmitted by the zero crossing circuit 52, and when the main control unit 7 receives the signal for controlling the first relay 53b and the second relay 54b to operate, send a corresponding control signal to the first relay 53b and/or the second relay 54b according to the zero crossing detection signal so as to open or close the first relay 53b and/or the second relay 54b.
Specifically, when the interrupt pin in the main control unit 7 receives the zero crossing detection signal sent by the zero crossing circuit 52, the main control unit 7 may output a first control signal or a second control signal according to a signal that causes the first relay 53b or the second relay 54b to operate, where the first control signal or the second control signal may be at a high level or a low level.
In the present utility model, the zero crossing circuit 52 includes a fifth resistor 52a, a first diode 52b, a second diode 52c, a photocoupler 52d, a third transistor 52f, a sixth resistor 52m, a seventh resistor 52n, an eighth resistor 52s, and a ninth resistor 52t.
One end of the fifth resistor 52a is electrically connected to a live wire of the power supply, the anode of the first diode 52b is electrically connected to the other end of the fifth resistor 52a, the anode of the second diode 52c is electrically connected to a zero line of the power supply, the second diode 52c is electrically connected to the cathode of the first diode 52b, and the second diode 52c is parallel connected to the first end and the second end of the photo coupler 52 d.
The third terminal of the photo-coupler 52d is electrically connected to a low voltage power supply, and the sixth resistor 52m is electrically connected between the fourth terminal of the photo-coupler 52d and the base of the third transistor 52 f.
The collector of the third transistor 52f is electrically connected to the connection terminal of the low voltage power supply and the third terminal of the photocoupler 52d through a seventh resistor 52 n.
The emitter of the third transistor 52f is electrically connected to the ground signal, and one end of the eighth resistor 52s is electrically connected between the sixth resistor 52m and the base of the third transistor 52f, and the other end of the eighth resistor 52s is electrically connected between the emitter of the third transistor 52f and the ground signal.
The collector of the third triode 52f is electrically connected to the main control unit 7 through a ninth resistor 52t, one end of the ninth resistor 52t is electrically connected between the seventh resistor 52n and the collector of the third triode 52f, and the other end of the ninth resistor 52t is electrically connected to the main control unit 7.
In summary, the refrigerator is provided with a control circuit, two relays are arranged in the control circuit, the on-off sequence and time of the two relays are controlled through a main control unit, specifically, the control circuit comprises the main control unit, and a zero crossing circuit, a first switch circuit and a second switch circuit which are electrically connected with the main control unit, wherein the second relay in the second switch circuit is connected with the first relay and a thermistor which are connected in series in the first switch circuit, the thermistor is used for reducing impact current, the on-off of the first relay and the second relay is controlled through the main control unit, the on-off of a load is controlled, and meanwhile, the on-off sequence and time of the first relay and the second relay are controlled, so that electric elements and the load of the refrigerator can be protected.
In the description of the present utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims (10)
1. A refrigerator, comprising:
the box body is internally provided with an installation space, and the front side of the box body is provided with a box opening communicated with the installation space;
the door body is rotatably connected to the box body and is used for opening or closing the box opening;
the box liner is arranged in the installation space, and an assembly space is formed between the box liner and the box body and is used for installing components;
the load is arranged in the assembly space and is electrically connected with the power supply;
the controller is electrically connected to the load and is used for controlling the running or stopping of the load, the controller comprises a main control board and a control circuit electrically connected to the main control board, and the control circuit comprises:
the main control unit is electrically connected with the main control board;
the zero crossing circuit is electrically connected with the main control unit and the power supply and is used for detecting a zero crossing point of the power supply;
the first switch circuit is electrically connected with the main control unit and one end of the load, and a first relay is arranged in the first switch circuit;
the second switch circuit is connected in parallel with the first switch circuit, a second relay is arranged in the second switch circuit, and the load is electrically connected to the connection ends of the first switch circuit and the second switch circuit;
and after the main control unit receives the zero crossing detection signal sent by the zero crossing circuit, the first relay and/or the second relay are/is opened or closed.
2. The refrigerator of claim 1, wherein the first switching circuit comprises:
the base electrode of the first triode is electrically connected to the main control unit;
a first relay, a first end of which is electrically connected to the collector of the first triode;
and the thermistor is electrically connected with the second end of the first relay.
3. The refrigerator of claim 2, wherein the second switching circuit comprises:
the base electrode of the second triode is electrically connected to the main control unit;
and the second relay is connected in parallel with the third end of the first relay and the thermistor.
4. The refrigerator of claim 3, wherein the first terminal of the second relay is electrically connected to the third terminal of the first relay, and the load is electrically connected to the third terminal of the first relay and the connection terminal of the first terminal of the second relay.
5. The refrigerator of claim 2, wherein the first switching circuit includes a first resistor electrically connected between the main control unit and a base of the first transistor.
6. The refrigerator of claim 5, wherein the first switching circuit comprises a second resistor, a collector of the first transistor is electrically connected to a ground signal, one end of the second resistor is electrically connected between the first resistor and a base of the first transistor, and the other end of the second resistor is electrically connected to the ground signal.
7. The refrigerator of claim 3, wherein the second switching circuit includes a third resistor electrically connected between the main control unit and a base of the second transistor.
8. The refrigerator of claim 7, wherein the second switching circuit includes a fourth resistor, one end of the fourth resistor is electrically connected between the third resistor and the second transistor, and the other end of the fourth resistor is electrically connected between an emitter of the second transistor and a ground signal.
9. The refrigerator of claim 1, wherein a first end of the zero crossing circuit is electrically connected to a hot wire of the power supply, a second end of the zero crossing circuit is electrically connected to a zero wire of the power supply, and a third end of the zero crossing circuit is electrically connected to the main control unit.
10. The refrigerator of claim 2, wherein one end of the thermistor is electrically connected to a live wire of the power supply, and the other end of the load is electrically connected to a neutral wire of the power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320940190.XU CN219889852U (en) | 2023-04-23 | 2023-04-23 | Refrigerator with a refrigerator body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320940190.XU CN219889852U (en) | 2023-04-23 | 2023-04-23 | Refrigerator with a refrigerator body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219889852U true CN219889852U (en) | 2023-10-24 |
Family
ID=88409321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320940190.XU Active CN219889852U (en) | 2023-04-23 | 2023-04-23 | Refrigerator with a refrigerator body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219889852U (en) |
-
2023
- 2023-04-23 CN CN202320940190.XU patent/CN219889852U/en active Active
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