Refrigerator and control method and control system thereof

Abstract

The present invention discloses a refrigerator, comprising a box body, a door body and a refrigeration system; an ice-making chamber is arranged on the door body, and the refrigeration system comprises a compressor, a condenser and an ice-making evaporator connected in sequence; the ice-making evaporator is arranged in the ice-making chamber; the condenser and the ice-making evaporator are connected through a refrigerant pipe assembly; the refrigerant pipe assembly comprises a first connecting pipe, a first flexible pipe and a second connecting pipe connected in sequence; the refrigerator also comprises a refrigerant leakage detection device, the refrigerant leakage detection device comprises: a detection sensor arranged near the first flexible pipe, a controller connected to the detection sensor; the detection sensor is used to detect whether there is refrigerant leakage around the first flexible pipe; the controller is used to issue a fault reminder after receiving a signal of refrigerant leakage. The refrigerator disclosed in the present invention, its control method and control system can detect whether there is refrigerant leakage around the first flexible pipe in real time, and issue a fault reminder in time after detecting the refrigerant leakage.

Description

Technical Field

[0001] The present invention relates to the field of refrigeration equipment, and in particular to a refrigerator and a control method and control system thereof. Background Art

[0002] At present, in order to facilitate the use of users, many refrigerator products will be equipped with an ice maker on the refrigerator door of the refrigerator. In the prior art, a refrigeration evaporator or a freezing evaporator is generally used to supply cold to the ice maker on the refrigeration door, so that the ice maker makes ice cubes from water. In addition, some refrigerator products will be equipped with an evaporator on the refrigeration door, and other equipment such as a compressor will be arranged in the cabinet. At this time, the refrigerant pipeline needs to be connected from the cabinet to the refrigeration door. The part of the refrigerant pipeline between the cabinet and the refrigeration door needs to be connected with a flexible pipeline, and the refrigerant leakage problem may easily occur here. Once the refrigerant pipeline fails to leak refrigerant, it is easy to cause safety hazards. Therefore, if refrigerant leakage occurs at the flexible pipeline, it is very important to detect and deal with it in time. Summary of the invention

[0003] The object of the present invention is to provide a refrigerator and a control method and a control system thereof.

[0004] To achieve the above-mentioned purpose of the invention, an embodiment of the present invention provides a refrigerator, comprising a box, a door body for opening and closing the box body, and a refrigeration system; the door body is provided with an ice-making chamber, and the refrigeration system comprises a compressor, a condenser and an ice-making evaporator connected in sequence; the compressor and the condenser are arranged in the box body, and the ice-making evaporator is arranged in the ice-making chamber; the condenser and the ice-making evaporator are connected through a refrigerant pipe assembly, and the ice-making evaporator and the compressor are connected through an ice-making return pipe assembly; the refrigerant pipe assembly comprises a first connecting pipe, a first flexible pipe and a second connecting pipe connected in sequence; it is characterized in that the refrigerator also comprises a refrigerant leakage detection device, and the refrigerant leakage detection device comprises: a detection sensor arranged near the first flexible pipe, and a controller connected to the detection sensor in communication; the detection sensor is used to detect whether there is refrigerant leakage around the first flexible pipe; the controller is used to issue a fault reminder after receiving a signal of refrigerant leakage.

[0005] As a further improvement of the present invention, both ends of the first flexible tube are respectively provided with a first fixing ring fixedly connected to the first connecting tube and a second fixing ring fixedly connected to the second connecting tube, and the first fixing ring and the second fixing ring are respectively interference fit with the first flexible tube.

[0006] As a further improvement of the present invention, the portions where the first fixing ring and the second fixing ring are connected to the first flexible tube are coated with sealing liquid.

[0007] As a further improvement of the present invention, the first fixing ring and the second fixing ring are both metal rings, the first connecting pipe is welded to the first fixing ring, and the second connecting pipe is welded to the second fixing ring.

[0008] As a further improvement of the present invention, the refrigeration door body is rotatably connected to the box body through a hinge, and a hinge box for accommodating the hinge is provided on the top of the refrigeration chamber; the first flexible tube and the detection sensor are both located in the hinge box.

[0009] As a further improvement of the present invention, the first fixing ring and the second fixing ring are both located in the hinge box.

[0010] Another aspect of the present invention discloses a control method for a refrigerator, the method comprising: obtaining a detection signal indicating whether there is refrigerant leakage around a first flexible pipe; and issuing a fault reminder according to confirmation information represented by the detection signal.

[0011] As a further improvement of the present invention, the "detection signal of whether there is refrigerant leakage" specifically includes: a real-time monitoring signal of whether there is a chemical reaction between metal and halogen.

[0012] Another aspect of the present invention discloses a control system for a refrigerator, the control system comprising: a refrigerant leakage detection unit for obtaining a detection signal indicating whether there is refrigerant leakage around a first flexible pipe; and a control unit for issuing a fault reminder according to confirmation information represented by the detection signal.

[0013] As a further improvement of the present invention, the refrigerant leakage detection unit includes: a detection sensor for obtaining a real-time monitoring signal of whether a chemical reaction occurs between metal and halogen.

[0014] Compared with the prior art, the refrigerator and its control method and control system disclosed in the present invention can detect in real time whether there is refrigerant leakage around the first flexible tube by setting a detection sensor at a position close to the first flexible tube and a controller communicatively connected to the detection sensor, and promptly remind the user after the refrigerant leakage is found, thereby preventing the danger caused by refrigerant leakage and ensuring the safe operation of the refrigerator. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of a refrigerator in one embodiment of the present invention;

[0016] Figure 2 is a schematic diagram of a refrigeration system in one embodiment of the present invention.

[0017] Figure 3 is a schematic structural diagram of a refrigerator in one embodiment of the present invention;

[0018] Figure 4 yes Figure 3 A magnified schematic diagram of part A;

[0019] Figure 5 yes Figure 3 A magnified schematic diagram of part B;

[0020] Figure 6 is a schematic structural diagram of an ice tray in one embodiment of the present invention;

[0021] Figure 7 is a flow chart of a method for controlling a refrigerator in one embodiment of the present invention;

[0022] Figure 8 It is a schematic structural diagram of a control system of a refrigerator in one embodiment of the present invention. DETAILED DESCRIPTION

[0023] The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0024] It should be understood that the terms used herein, such as "upper", "above", "lower", "below", etc., indicating spatial relative positions, are used for the purpose of convenience to describe the relationship of one unit or feature relative to another unit or feature as shown in the drawings. The terms of spatial relative positions may be intended to include different orientations of the device in use or operation other than the orientation shown in the drawings.

[0025] like Figure 1-6 As shown, the refrigerator includes a housing 100, a door 200, an ice-making compartment 300 and a refrigeration system. The housing 100 includes a refrigerating compartment 110 and a freezing compartment 120. The refrigeration system includes a compressor 410, a condenser 420, a refrigerating capillary 431 and a refrigerating evaporator 430 arranged in the refrigerating compartment 110, a freezing capillary 441 and a freezing evaporator 440 arranged in the freezing compartment 120, and an ice-making capillary 451 and an ice-making evaporator 450 arranged in the ice-making compartment 300. A compressor compartment is provided at the rear side of the freezing compartment 120, and the compressor 410 and the condenser 420 are both arranged in the compressor compartment. Figure 2As shown, a solenoid valve 421 is provided at one end of the condenser 420, and between the solenoid valve 421 and the compressor 410, the refrigeration capillary 431 and the refrigeration evaporator 430 are connected in series, and the ice-making capillary 451 and the ice-making evaporator 450 are connected in series. After the two series branches are connected in parallel with the freezing capillary 441, they are connected in series with the freezing evaporator 440, that is, the refrigerant can selectively enter the refrigeration capillary, the freezing capillary and the ice-making capillary through the solenoid valve 421, and the refrigerant reaches the refrigeration evaporator through the refrigeration capillary, and the refrigerant reaches the ice-making evaporator through the ice-making capillary, and then the refrigerant from the refrigeration evaporator, the ice-making evaporator and the freezing capillary enters the freezing evaporator and returns to the compressor. Thus, the refrigeration process of the refrigeration chamber 110, the freezing chamber 120 and the ice-making chamber 300 can be independently controlled. The ice cubes made in the ice-making chamber have high crystallinity and will not have a cross-flavor.

[0026] The condenser 420 is connected to the ice-making capillary tube 451 via a refrigerant pipe assembly 460, and the ice-making evaporator 450 is connected to the freezing evaporator via an ice-making return pipe assembly 470. Figure 3 As shown, the ice-making capillary tube 451 and the ice-making evaporator 420 are both disposed on the door body 200. In addition, the ice-making capillary tube 451 and the ice-making return air pipe assembly 470 are parallel to each other and are adjacently buried in the foaming layer of the door body 200.

[0027] Thus, the refrigerator disclosed in the present invention, by arranging the ice-making capillary 451 on the door body 200, makes the part of the refrigerant pipe assembly 460 entering the door body 200 from the cabinet 100 a normal temperature pipe, so there is no need to set a heat preservation structure and an anti-condensation structure in this part; and the refrigerant in the refrigerant pipe assembly 460 will not produce heat exchange with room temperature air, which also improves the refrigeration efficiency.

[0028] In another embodiment, the refrigerating chamber and the freezing chamber may share the same evaporator, which is not limited in the embodiment of the present invention.

[0029] In addition, the ice-making capillary tube 451 and the ice-making return air pipe assembly 470 on the door body 200 are parallel to each other and close together inside the door body 200. Since the ice-making capillary tube 451 and the ice-making return air pipe assembly 470 are both copper tubes, the heat exchange effect of the two is better. Moreover, the ice-making capillary tube 451 and the ice-making return air pipe assembly 470 are both arranged on the door body, so the opening and closing of the door body will not affect the heat exchange effect of the two, and the stability is better. After the ice-making capillary tube 451 exchanges heat with the ice-making return air pipe assembly 470, the refrigerant entering the ice-making capillary tube 451 and flowing toward the ice-making evaporator 450 is a high-temperature and high-pressure refrigerant, while the refrigerant output from the first return air pipe 471 of the ice-making return air pipe assembly 470 is a normal-temperature and low-pressure refrigerant. The first flexible tube 462 in the refrigerant pipeline assembly 460 is connected to the ice-making capillary tube 451, and the second flexible tube 472 in the ice-making return air pipe assembly 470 is connected to the ice-making evaporator 450. Although the first flexible tube 462 and the second flexible tube 472 pass between the cabinet body 10 and the door body 200 and are exposed to the ambient temperature, there is no risk of condensation.

[0030] In an embodiment of the present invention, Figure 3-4 As shown, the refrigerant pipe assembly 460 includes a first connecting pipe 461, a first flexible pipe 462 and a second connecting pipe 433 which are connected in sequence. The first connecting pipe 461 is connected to the condenser 420, and the second connecting pipe 433 is connected to the ice-making evaporator 420. In fact, an ice-making capillary tube 451 is also connected between the second connecting pipe 433 and the ice-making evaporator 420.

[0031] Further, the ice-making air return pipe assembly 470 includes a first air return pipe 471, a second flexible pipe 472 and a second air return pipe 473 connected in sequence, wherein the first air return pipe 471 is connected to the ice-making evaporator 420, and the second air return pipe 473 is connected to the compressor. In fact, a freezing evaporator 440 may also be connected between the second air return pipe 422 and the compressor.

[0032] In the embodiment of the present invention, the door body 200 is rotatably connected to the box body 100 through a hinge, and a hinge box 130 for accommodating the hinge is provided on the top of the refrigerator. In addition, the refrigerant pipe assembly 460 passes through the hinge box 130 from the box body 100 and extends to the door body 200, and the ice-making return air pipe assembly 470 passes through the hinge box 130 from the door body 200 and extends into the box body 100. By making the refrigerant pipe assembly 460 and the ice-making return air pipe assembly 470 pass through the hinge box 130 respectively, so that a part of the above two pipes can be located in the hinge box 130, the distribution of the refrigerant pipe assembly 460 and the ice-making return air pipe assembly 470 will not affect the opening and closing of the door body 200, nor will it be exposed to the outside of the door body 200 and the box body 100 to affect the appearance.

[0033] Specifically, the first flexible tube 462 and the second flexible tube 472 can be located in the hinge box 130. Because the first flexible tube 462 and the second flexible tube 472 are both made of soft materials, they are both arranged in the hinge box 130. When opening and closing the door, the two flexible tubes can be bent, which will make it more convenient to open and close the door body 200.

[0034] In fact, a portion of the hinge box 130 is provided on the top of the door and the top of the box body, and the two can be connected when the door is closed to completely cover the refrigerant pipe assembly 460 and the ice-making return air pipe assembly 470, so that the pipeline assembly will not be exposed.

[0035] In an embodiment of the present invention, Figure 4 As shown, the first flexible tube 462 is provided with a first fixing ring 4621 and a second fixing ring 4622 at both ends, the first fixing ring 4621 is fixedly connected to the first connecting tube 461, the second fixing ring 4622 is fixedly connected to the second connecting tube 433, and the first fixing ring 4621 and the second fixing ring 4622 are respectively interference fit with the first flexible tube 462. Generally speaking, the first connecting tube 461 and the second connecting tube 432 are both hard metal tubes, while the first flexible tube 462 is a soft pipe, such as a pipe made of nylon or other materials. Then, the connection between the first connecting tube 461 and the second connecting tube 432 and the first flexible tube needs to consider two different materials and can achieve better sealing. By respectively providing the first fixing ring and the second fixing ring at the two ends of the first flexible tube, and making the first fixing ring 4621 and the second fixing ring 4622 respectively interference fit with the first flexible tube, the sealing at the first flexible tube can be strengthened. Specifically, the first fixing ring 4621 and the second fixing ring 4622 are both metal rings, and the two metal rings can be welded to the first connecting tube 461 and the second connecting tube 432, respectively, so that the connecting tubes and the fixing rings can be kept sealed. In addition, the first fixing ring 4621 and the second fixing ring 4622 are respectively interference fit with the first flexible tube, specifically, the outer diameter of the first flexible tube is larger than the inner diameter of the first fixing ring 4621 and the second fixing ring 4622, so that the two ends of the first flexible tube are tightly pressed against the inner walls of the first fixing ring 4621 and the second fixing ring 4622. In this way, the connection between the first connecting tube 461 and the second connecting tube 432 and the first flexible tube can maintain good sealing.

[0036] Furthermore, the first fixing ring 4621 and the second fixing ring 4622 are coated with sealing liquid at the connection points of the first flexible tube 462. By coating the sealing liquid at the connection points at both ends of the first flexible tube 462, the sealing performance of the connection points between the first flexible tube 462 and the first connecting tube 461 and the second connecting tube 433 can be improved to prevent leakage of the refrigerant.

[0037] Furthermore, the first fixing ring and the second fixing ring are both located in the hinge box. That is, the connection between the first connecting tube 461, the second connecting tube 433 and the first flexible tube 462 is placed in the hinge box 130 and is not exposed to the outside of the refrigerator. If the connection (i.e., the first fixing ring and the second fixing ring) is damaged or the refrigerant leaks, it is more convenient to repair and handle.

[0038] In the embodiment of the present invention, a detection sensor is further provided in the hinge box 130 near the first flexible tube 462. The refrigerator further comprises a controller in communication connection with the detection sensor. The detection sensor is used to detect whether there is a refrigerant leak around the first flexible tube, and sends a confirmation signal to the controller after detecting the refrigerant leak. The controller is used to issue a fault reminder after receiving the confirmation signal.

[0039] In an embodiment of the present invention, two fixing rings can also be provided at both ends of the second flexible tube 472 in the ice-making air return pipe assembly 470, and are respectively welded to the first air return pipe 471 and the second air return pipe 442. At the same time, the two fixing rings are respectively interference fit with the second flexible tube 472. In addition, the parts where the two fixing rings are connected to the second flexible tube 472 are coated with sealing liquid. Further, because the second flexible tube 472 and its fixing rings are also arranged in the hinge box 130, the detection sensor can actually detect whether there is a refrigerant leak around the second flexible tube. In fact, because the first flexible tube 462, the second flexible tube 472 and the detection sensor are all arranged in the hinge box, and the detection sensor detects whether the air around the hinge box 130 contains halogen, whether the refrigerant leak occurs at the connection of the first flexible tube 462 or the connection of the second flexible tube 472, it can be detected.

[0040] Furthermore, the first flexible tube 462 and the second flexible tube 472 can be arranged in parallel in the hinge box 130. This facilitates the arrangement of the two flexible tubes and is not prone to entanglement.

[0041] Preferably, the length of the first flexible tube 462 may be greater than the dimension of the hinge box 130 in the thickness direction of the door body 200. Similarly, the length of the second flexible tube 472 may be greater than the dimension of the hinge box 100 in the thickness direction of the door body 200. In this way, the refrigerant pipe assembly 430 and the ice-making return air pipe assembly 470 will not be pulled when the door body 200 is opened or closed.

[0042] Preferably, the part of the ice-making return air pipe assembly 470 located in the box 100 is buried in the foam layer of the side wall of the box 100. In other words, part of the second return air pipe 473 is buried in the foam layer of the side wall of the box 100, which can ensure that the second return air pipe 473 does not exchange heat with the air in the box, thereby improving the refrigeration efficiency.

[0043] like Figure 5 As shown, an ice tray 310 is provided in the ice making chamber 300, and a defrost device is provided on the upper surface of the ice tray 310. The refrigerator further comprises a controller electrically connected to the defrost device; the controller is used to control the defrost device to turn on when receiving a defrost instruction. Thus, after the defrost device is controlled to defrost the ice tray, the defrosted water will directly flow into the ice tray, and there is no need to additionally provide a defrosted water discharge structure. The defrost device can be provided on the upper surface of the ice tray 310, or it can be provided above the ice tray 310 and have a certain gap with the upper surface of the ice tray 310.

[0044] Furthermore, the ice-making evaporator 450 is disposed below the ice-making tray 310, and a partition 320 is disposed between the ice-making tray 310 and the ice-making evaporator 450. Specifically, the ice-making tray 310 is detachably disposed in the ice-making chamber 300, and the partition 320 is disposed between the evaporator 450 and the ice-making tray 310, so that when the user removes the ice-making tray 310, the evaporator will not be directly contacted. In addition, if the ice-making evaporator 450 is frosted, the ice box 310 can also be easily removed without being frozen on the ice-making evaporator 450.

[0045] Furthermore, the defrost device is a heating wire 330. The heating wire 330 has a relatively simple structure, is quickly turned on, and has a good defrosting effect.

[0046] Preferably, if Figure 6 As shown, two rows of ice cube groups are arranged in parallel in the width direction of the ice tray 310, and each row of ice cube groups is provided with a plurality of ice cubes 311 arranged in the length direction, and an upper surface 312 extending in the length direction is formed between the two rows of ice cube groups, and the heating wire 330 is arranged on the upper surface 312. The heating wire is in a strip shape, so it can be conveniently arranged on the upper surface 312 of the ice tray. And after the heating wire 330 is turned on, the defrost water can also conveniently fall into the ice cubes 311 on both sides along the upper surface 312, so there is no need to set up an additional defrost water discharge structure.

[0047] like Figure 7 As shown, in an embodiment of the present invention, a refrigerator control method is also disclosed, and the method comprises the following steps:

[0048] S101, obtaining a detection signal of whether there is refrigerant leakage around the first flexible pipe.

[0049] A detection sensor is arranged in the hinge box, and the detection sensor can detect in real time whether there is refrigerant leakage around the first flexible tube. After the detection sensor detects refrigerant leakage around the first flexible tube, a corresponding detection signal is sent to the controller.

[0050] S102: issuing a fault reminder according to confirmation information represented by the detection signal.

[0051] After the controller obtains the detection signal, it will control the issuance of a fault reminder according to the confirmation information represented by the detection signal. The fault reminder can be a fault code displayed on the display screen of the refrigerator, or an audio-visual reminder can be issued.

[0052] Furthermore, the “detection signal of whether there is refrigerant leakage” specifically includes: a real-time monitoring signal of whether there is a chemical reaction between metal and halogen.

[0053] In an embodiment of the present invention, the refrigerant is a Freon refrigerant. The detection sensor is a halogen sensor, in which a metal substance that easily reacts with halogen is placed. Normal air does not contain halogen. Therefore, as long as the metal in the halogen sensor undergoes a chemical reaction related to halogen, it can be said that the refrigerant has leaked. At this time, the halogen sensor will convert the chemical reaction into an electrical signal, that is, a detection signal with confirmation information, and the detection sensor will send the detection signal to the controller. After obtaining the detection signal, the controller can issue a fault reminder.

[0054] In fact, because the first flexible tube 462, the second flexible tube 472 and the detection sensor are all arranged in the hinge box, and the detection sensor detects whether the air around the hinge box 130 contains halogen, whether refrigerant leakage occurs at the connection of the first flexible tube 462 or the connection of the second flexible tube 472 can be detected.

[0055] like Figure 8 As shown, in one embodiment of the present invention, a control system for a refrigerator is also disclosed, characterized in that the control system comprises:

[0056] The refrigerant leakage detection unit 201 is used to obtain a detection signal indicating whether there is refrigerant leakage around the first flexible pipe.

[0057] A detection sensor is arranged in the hinge box, and the detection sensor can detect in real time whether there is refrigerant leakage around the first flexible tube. After the detection sensor detects refrigerant leakage around the first flexible tube, a corresponding detection signal is sent to the controller.

[0058] The control unit 202 is used to issue a fault reminder according to the confirmation information represented by the detection signal.

[0059] After obtaining the detection signal, the control unit will control the issuance of a fault reminder according to the confirmation information represented by the detection signal. The fault reminder can be a fault code displayed on the display screen of the refrigerator, or an audio-visual reminder can be issued.

[0060] Furthermore, the refrigerant leakage detection unit 201 includes: a detection sensor 203, which is used to obtain a real-time monitoring signal of whether a chemical reaction occurs between metal and halogen.

[0061] The detection sensor is arranged in the hinge box 130, and the detection sensor 203 will detect in real time whether there is any refrigerant leakage around the hinge box (that is, the connection between the first flexible tube and the second flexible tube). In an embodiment of the present invention, the refrigerant is a Freon refrigerant. The detection sensor is a halogen sensor, in which a metal substance that easily reacts with halogen is placed. Normal air does not contain halogen. Therefore, as long as the metal in the halogen sensor undergoes a chemical reaction related to halogen, it can be said that the refrigerant has leaked. At this time, the halogen sensor will convert the chemical reaction into an electrical signal, that is, a detection signal with confirmation information, and the detection sensor will send the detection signal to the controller. After obtaining the detection signal, the controller can issue a fault reminder.

[0062] In fact, because the first flexible tube 462, the second flexible tube 472 and the detection sensor are all arranged in the hinge box, and the detection sensor detects whether the air around the hinge box 130 contains halogen, whether refrigerant leakage occurs at the connection of the first flexible tube 462 or the connection of the second flexible tube 472 can be detected.

[0063] The refrigerator and its control method and control system disclosed in the present invention can detect in real time whether there is refrigerant leakage around the first flexible tube by arranging a detection sensor at a position close to the first flexible tube and a controller communicatively connected to the detection sensor, and promptly remind the user after the refrigerant leakage is found, thereby preventing the danger caused by the refrigerant leakage and ensuring the safe operation of the refrigerator.

[0064] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0065] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A refrigerator, comprising a box, a door for opening and closing the box, and a refrigeration system; the door is provided with an ice-making compartment, the refrigeration system comprises a compressor, a condenser, and an ice-making evaporator connected in sequence; the compressor and the condenser are arranged in the box, and the ice-making evaporator is arranged in the ice-making compartment; the condenser and the ice-making evaporator are connected through a refrigerant pipe assembly, and the ice-making evaporator and the compressor are connected through an ice-making return air pipe assembly; the refrigerant pipe assembly comprises a first connecting pipe, a first flexible pipe, and a second connecting pipe connected in sequence; it is characterized in that The refrigerator further includes a refrigerant leakage detection device, which includes: a detection sensor arranged near the first flexible tube, and a controller in communication connection with the detection sensor; the detection sensor is used to detect whether there is refrigerant leakage around the first flexible tube; the controller is used to issue a fault reminder after receiving a signal of refrigerant leakage; The door body is rotatably connected to the box body through a hinge. The box body is provided with a hinge box for accommodating the hinge. The first flexible tube and the detection sensor are both located in the hinge box. The detection sensor is used to obtain a real-time monitoring signal of whether a chemical reaction occurs between metal and halogen.

2. The refrigerator according to claim 1, characterized in that: A first fixing ring fixedly connected to the first connecting tube and a second fixing ring fixedly connected to the second connecting tube are respectively disposed at two ends of the first flexible tube, and the first fixing ring and the second fixing ring are respectively interference-fitted with the first flexible tube.

3. The refrigerator according to claim 2, characterized in that: The portions of the first fixing ring and the second fixing ring connected to the first flexible tube are coated with sealing liquid.

4. The refrigerator according to claim 2, characterized in that: The first fixing ring and the second fixing ring are both metal rings, the first connecting pipe is welded to the first fixing ring, and the second connecting pipe is welded to the second fixing ring.

5. The refrigerator according to claim 2, characterized in that: The refrigerated door body is rotatably connected to the box body through the hinge, and the top of the box body is provided with the hinge box for accommodating the hinge.

6. The refrigerator according to claim 5, characterized in that: The first fixing ring and the second fixing ring are both located in the hinge box.

7. A refrigerator control method, applied to the refrigerator according to any one of claims 1 to 6, characterized in that: The method comprises: Obtaining a detection signal of whether there is refrigerant leakage around the first flexible tube, wherein the first flexible tube and a detection sensor for obtaining the detection signal are both located in the hinge box; Issue a fault reminder based on the confirmation information represented by the detection signal; "Whether there is a refrigerant leakage detection signal" specifically includes: Real-time monitoring signal of whether there is chemical reaction between metal and halogen.

8. A control system, applied to the refrigerator according to any one of claims 1 to 6, characterized in that: The control system comprises: A refrigerant leakage detection unit, used to obtain a detection signal of whether there is refrigerant leakage around the first flexible pipe; A control unit, used for issuing a fault reminder according to the confirmation information represented by the detection signal; The refrigerant leakage detection unit comprises: A detection sensor is used to obtain a real-time monitoring signal of whether a chemical reaction occurs between metal and halogen; The first flexible tube and the detection sensor are both arranged in the hinge box.

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