JP2017156008A - refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator capable of improving temperature detection accuracy of a temperature sensor for detecting the temperature of a compressor, and capable of installing the temperature sensor at low cost.SOLUTION: A refrigerator includes: a compressor 12 for compressing a refrigerant; a refrigerator body 1 including a machine room 11 for accommodating the compressor 12; a temperature sensor 51 mounted on a sealed container 46 of the compressor 12, and for detecting the temperature of the compressor 12; and wiring 70 for electrically connecting the temperature sensor 51 and a control device 60 provided at the refrigerator body 1. The wiring 70 includes: crimp parts 91a, 91b comprising by crimping lead wires 51b1, 51b2 extending from the temperature sensor 51 and having heat resistance with respect to the compressor 12, and lead wires 71a, 71b extending from the control device 60; and insulating tubes 82a, 82b for protecting the crimp parts 91a, 91b.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a refrigerator.

  Conventionally, a refrigerator has a compressor for compressing a refrigerant in a machine room, and when the internal temperature of the storage room rises above a set value, the rotation speed of the electric motor built in the compressor by the temperature control function of the control device of the refrigerator The interior is cooled by increasing the flow rate to a high speed operation and increasing the refrigerant flow rate in the refrigeration cycle to improve the cooling power. Also, when the internal temperature is cooled to the set value, the rotational speed of the electric motor is lowered to reduce the cooling power as low speed operation, and the internal temperature is kept within a predetermined range by repeating this high speed operation and low speed operation. Controlled to keep inside. Thus, the compressor will operate at high speed when the internal temperature is higher than the set temperature, but when the refrigerator is installed in a high temperature atmosphere and the surroundings are shielded by walls, etc., The compressor temperature may rise abnormally and become overloaded, causing failure.

  As a countermeasure against such a failure, a compressor having an overload relay made of a bimetal element in a power feeding circuit of a compressor is known. In this case, when the compressor reaches a predetermined temperature or higher, the relay is activated to cut off the power supply to the compressor. Specifically, at high temperatures, the bimetal element senses and reverses the heat of the compressor (housing) that houses the compressor, separates the contacts and shuts off the power supply to the compressor, and the compressor (housing) When the temperature of the bimetal element is cooled to a predetermined temperature or lower, the bimetal element returns to its original state, the contact is connected, and the compressor is powered on to start.

  The compressor disclosed in Patent Document 1 includes a control circuit controlled by a DC power source that drives the compressor, a printed circuit board on which a power supply circuit that supplies power to the control circuit is mounted, and a print that is attached to the compressor. A storage case for storing the substrate and a temperature sensor for detecting the heat of the compressor are provided. This temperature sensor is stored in a storage case. And it is the structure which interrupts | blocks DC power supply, when a temperature sensor detects the temperature of a compressor and becomes more than predetermined temperature.

JP 2014-177880 A

  By the way, recently, it is also required to further control the internal temperature by variably adjusting the number of piston reciprocations in accordance with the temperature of the refrigerant sucked into the compressor through the suction pipe. (The compressor is a reciprocating compressor, and the piston is reciprocated by a crankshaft rotated by an electric motor. Hereinafter, the number of reciprocations is expressed as a rotational speed). In this case, the bimetal element cannot output a temperature signal for controlling the rotational speed of the compressor.

  Moreover, in the compressor of patent document 1, since the temperature sensor was accommodated in the storage case, there existed a problem which cannot measure the exact temperature of a compressor (casing). Therefore, when the temperature sensor (thermistor) is directly attached to the compressor housing, the lead wire of the thermistor is in a position parallel to the housing of the compressor, so the heat of the compressor may damage the lead wire of the temperature sensor. is there. For this reason, it has been proposed that the lead wires of the temperature sensor have high heat resistance. However, if the temperature sensor lead wire has a high heat resistance and the temperature sensor is connected to the control board provided on the refrigerator main body side, there is a problem that the cost increases.

  The objective of this invention is providing the refrigerator which can improve the temperature detection precision of a compressor and can install a temperature sensor at low cost.

  The present invention includes a compressor that compresses a refrigerant, a refrigerator main body that includes a machine room that houses the compressor, a temperature sensor that is attached to a housing of the compressor and detects the temperature of the compressor, and the temperature A wiring for electrically connecting a sensor and a control device provided in the refrigerator body, the wiring extending from the temperature sensor and having heat resistance to the compressor, and a sensor-side lead wire, A crimping portion formed by crimping a main body-side lead wire extending from the control board, and a protection portion that protects the crimping portion.

  ADVANTAGE OF THE INVENTION According to this invention, the temperature detection accuracy of the temperature sensor which detects the temperature of a compressor can be improved, and also the refrigerator which can install a temperature sensor at low cost can be provided.

It is a longitudinal cross-sectional view of the refrigerator which concerns on 1st Embodiment. It is a perspective view which shows the machine room of the back lower part of the refrigerator which concerns on 1st Embodiment. It is the figure which looked at the compressor of the refrigerator which concerns on 1st Embodiment from the protective cover side. It is a partial omission cross-sectional view of the compressor of the refrigerator which concerns on 1st Embodiment. It is a schematic block diagram of the wiring of the refrigerator which concerns on 1st Embodiment. It is a block diagram which shows the crimping | compression-bonding part of the refrigerator which concerns on 1st Embodiment. It is a schematic block diagram of the wiring of the refrigerator which concerns on 2nd Embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to the following embodiments, and various modifications and application examples are included in the technical concept of the present invention. Is also included in the range.

(First embodiment)
FIG. 1 is a longitudinal sectional view of the refrigerator according to the first embodiment.
As shown in FIG. 1, a refrigerator 100 is attached to a compressor 12 that compresses a refrigerant, a refrigerator main body 1 that includes a machine room 11 that houses the compressor 12, and a housing of the compressor 12. A temperature sensor 51 for detecting the temperature of the battery, and a wiring 70 for electrically connecting the temperature sensor 51 and the control device 60 provided in the refrigerator main body 1.

  The refrigerator 100 includes a refrigerator compartment 2, an ice making compartment 3, an upper freezer compartment 4, a lower freezer compartment 5, and a vegetable compartment 6 from above. The refrigerating room 2 includes refrigerating room doors 2a and 2b which are divided into the left and right sides on the front side and open to the front side with double doors. In addition, the ice making chamber 3, the upper freezer compartment 4, the lower freezer compartment 5, and the vegetable compartment 6 are each provided with a drawer type ice making door 3a, an upper freezer compartment door 4a, a lower freezer compartment door 5a, and a vegetable compartment door 6a. .

  Moreover, the refrigerator 100 has the refrigerator main body 1 which consists of the heat insulation layer 10p with which a foaming heat insulating material is filled with the outside and the inside of a store | warehouse | chamber. For example, foamed polyurethane or the like is used for the heat insulating layer 10p. Moreover, the refrigerator main body 1 is mounting the vacuum heat insulating material 16 whose heat conductivity is lower than a foam heat insulating material for the heat insulation performance improvement.

  In the refrigerator 100, the refrigerator compartment 2 in the refrigerator temperature zone, the upper freezer compartment 4 and the ice making chamber 3 in the refrigerator temperature zone are separated by a heat insulating partition wall 17. In addition, the lower freezer compartment 5 in the freezing temperature zone and the vegetable compartment 6 in the vegetable refrigeration temperature zone are separated by a heat insulating partition wall 18.

  The refrigerator main body 1 is provided with a cooler storage chamber 13 at the back of the lower freezer compartment 5, and a cooler 19 is provided therein as a cooling means. Further, a blower 20 (a propeller fan as an example) is provided as a blowing means in the cooler storage chamber 13 and above the cooler 19.

  Air cooled by heat exchange in the cooler 19 (hereinafter, low-temperature air heat-exchanged by the cooler 19 is referred to as “cold air”) is sent by the blower 20 through the refrigerator compartment air duct 21 and the freezer compartment air duct 22. Sent to each storage room. The air blown to each storage room includes a first air blow control means (hereinafter referred to as the cold room damper 23) for controlling the amount of air blown to the cold room storage room (refrigeration room 2), and a freezing temperature zone storage room ( It is controlled by a second air volume control means (hereinafter referred to as a freezer compartment damper 24) for controlling the air volume to the ice making room 3, the upper freezer room 4, and the lower freezer room 5). Incidentally, the air ducts to the refrigerator compartment 2, the ice making compartment 3, the upper freezer compartment 4, the lower freezer compartment 5, and the vegetable compartment 6 are provided on the back side of each storage compartment of the refrigerator body 1.

  The control device 60 includes a CPU, a memory such as a ROM and a RAM, an interface circuit, and the like, and is disposed on the upper surface side of the ceiling wall 15 of the refrigerator main body 1. In addition to the outside air temperature sensor (not shown), the cooler temperature sensor 25a, the refrigerating room temperature sensor 25b, the vegetable room temperature sensor 25c, and the freezer room temperature sensor 25d, the control device 60 controls the temperature of the casing of the compressor 12. It is electrically connected to a temperature sensor 51 that detects. Further, the control device 60 includes a door sensor (not shown) for detecting the open / closed state of each door 2a, 2b, 3a, 4a, 5a, 6a, and a temperature setting (not shown) provided on the inner wall of the refrigerator compartment 2. Connected to a container. In addition, the control device 60 controls each of the actuators that individually drive the refrigerator compartment damper 23 and the freezer compartment damper 24 by controlling the ON / OFF of the compressor 12 and the rotational speed control, etc., according to a program previously installed in the ROM. Control, ON / OFF control of the blower 20, rotation speed control, ON / OFF of an alarm for notifying a door open state, and the like are performed.

  In the refrigerator 100, the temperature sensor 51 detects the temperature of the compressor 12 in order to operate a protection function that prevents the compressor 12 from becoming hot. This temperature sensor 51 is housed in a protective cover 47 in order to prevent the influence of the ambient air temperature from directly acting on the temperature sensor 51 and improve the temperature detection accuracy.

FIG. 2 is a perspective view showing a machine room at the lower back of the refrigerator according to the first embodiment.
As shown in FIG. 2, a capacitor unit 44 is arranged in one side (here, the right side in the drawing) in the machine room 11 provided at the lower back of the refrigerator body 1. A cooling fan 45 is disposed on the opposite side of the condenser unit 44 from the outer right end surface RS, and the compressor 12 including the iron hermetic container 46 is disposed on the opposite side of the cooling fan 45 from the condenser unit 44 side. Yes.

  The compressor 12 is provided with a protective cover 47 that houses a temperature sensor 51 (see FIG. 1) on the side surface opposite to the cooling fan 45. The side of the protective cover 47 opposite to the compressor 12 is an outer left end surface LS of the machine room 11. In addition to this, the machine room 11 is provided with refrigeration cycle components such as capillary tubes, switching valves, dryers, and piping.

  Ventilation ports 48R and 48L are formed in the outer right end surface RS and the outer left end surface LS constituting the machine room 11, so that air having a high temperature in the machine room 11 can be exchanged with cold external air. . That is, the external air that has flowed in from the ventilation port 48R by the rotation of the cooling fan 45 cools the condenser unit 44, and after cooling the cooling fan 45 and the compressor 12, is discharged from the ventilation port 48L.

Drawing 3 is a figure which looked at the compressor of the refrigerator concerning a 1st embodiment from the protective cover side. In FIG. 3, the illustration of a plate (bracket) for elastically supporting the compressor 12 in the machine room 11 (see FIG. 2) is omitted.
As shown in FIG. 3, the compressor 12 is a so-called reciprocating compressor configured by, for example, arranging a compression element (not shown) and an electric element (not shown) in an airtight container (housing, chamber) 46. . The hermetic container 46 has a space for accommodating a compression element and an electric element inside by joining an upper case 46a constituting the upper outline and a lower case 46b constituting the lower outline by welding or the like.

  The protective cover 47 is attached to the outer surface of the compressor 12. The protective cover 47 is made of a synthetic resin and formed in a box shape, and is fixed to the casing of the compressor 12 via a fixing bolt (not shown). The protective cover 47 may be fixed by being fitted to a fixing bracket provided in the compressor 12.

  Further, in the protective cover 47, a connection connector 50 connected to a three-phase power line extending from a control device 60 (see FIG. 1) provided on the top surface (ceiling wall 15) of the refrigerator body 1 is provided. The electric motor built in the compressor 12 is rotated by the electric power supplied from the connection connector 50 to drive the compressor 12.

  The compressor 12 is provided with a suction pipe 49 for introducing the refrigerant into the sealed container 46. The suction pipe 49 is connected to the cooler 19 (see FIG. 1). The refrigerant introduced from the suction pipe 49 of the sealed container 46 is compressed by the compression element, and then sent from the discharge pipe (not shown) to the condenser (not shown).

  A temperature sensor 51 is provided in the protective cover 47 next to the connection connector 50. The temperature sensor 51 is disposed at a position adjacent to the suction pipe 49. That is, the temperature sensor 51 is interposed between the connection connector 50 and the suction pipe 49.

  Therefore, the temperature sensor 51 can detect the temperature of the refrigerant flowing through the suction pipe 49 indirectly via the compressor 12. Various temperature sensors 51 can be used, and can be selected from a thermistor, a resistance temperature detector, and the like.

  Moreover, the temperature sensor 51 is comprised by the sensor main body 51a and the electric wire 51b extended from the end of the axial direction of the sensor main body 51a. The sensor main body 51a is, for example, one in which an element is accommodated in a cylindrical tube and a gap between the element and the cylindrical tube is sealed with an insulator. In the electric wire 51b, for example, the periphery of a copper wire (conductor) is covered with an insulator made of crosslinked polyethylene.

  For this reason, when it attaches so that the surrounding surface (side surface) of the cylindrical tube of the temperature sensor 51 may contact the surface (housing body surface) of the airtight container 46 of the compressor 12, the electric wire 51b extended from the sensor main body 51a It will extend along the surface. Therefore, there is a possibility that the electric wire 51b comes into contact with the sealed container 46, and as the temperature sensor 51 to be used, a high heat-resistant electric wire 51b having heat resistance with respect to the compressor 12 is used.

FIG. 4 is a cross-sectional view of the refrigerator compressor according to the first embodiment.
As shown in FIG. 4, the temperature sensor 51 is arranged such that the side surface of the sensor body 51 a is in contact with the flat portion 46 c that is a part of the surface of the sealed container 46 of the compressor 12. As a result, the temperature of the compressor 12 can be directly measured, and the temperature detection accuracy can be improved.

  The temperature sensor 51 is held between the holder member 52 and pressed against the sealed container 46, and one end of the holder member 52 is fixed inside the protective cover 47. For this reason, the temperature sensor 51 can be made to contact the flat part 46c reliably. Further, when the holder member 52 is a spring holder having elasticity, the temperature sensor 51 is elastically pressed against the flat portion 46c, and the temperature sensor 51 is stably brought into contact with the flat portion 46c for a long period of time. be able to. Of course, it is possible to suppress the phenomenon in which the temperature sensor 51 is intermittently separated from the flat portion 46c due to vibration generated by the operation of the compressor 12, and more accurate temperature detection is possible.

  In the present embodiment, the case where the temperature sensor 51 is brought into contact with the sealed container 46 of the compressor 12 has been described as an example. However, the temperature sensor 51 is protected without being brought into contact with the sealed container 46. You may arrange | position in the cover 47. FIG. In this case, the temperature detection accuracy is slightly lowered, but it is advantageous when a sufficient space for the temperature sensor 51 cannot be secured.

  Further, since the protective cover 47 is disposed in an area where the influence of the cooling air of the cooling fan 45 (see FIG. 2) is small (the cooling air is not directly applied), the temperature of the compressor 12 detected by the temperature sensor 51 is detected. Can reduce the influence of the cooling air of the cooling fan 45, and can accurately reflect the temperature of the refrigerant flowing through the suction pipe 49. Therefore, the temperature sensor 51 in the protective cover 47 can also indirectly detect the temperature of the refrigerant. Moreover, since the influence of the cooling air of the cooling fan 45 is reduced, the temperature detection accuracy can be further improved.

  By the way, since the temperature sensor 51 is disposed in contact with or close to the compressor 12, when an ordinary heat-resistant electric wire (polyvinyl chloride resin) is used, the electric wire touches the high-temperature compressor 12 (sealed container 46). In some cases, the electric wire may be damaged. Therefore, it is necessary to make the electric wire 51b of the temperature sensor 51 higher in heat resistance than a general electric wire. Further, if all of the compressor 12 arranged in the machine room 11 to the control device 60 installed on the ceiling wall 15 of the refrigerator main body 1 are made of a high heat resistant electric wire 51b, there is a problem that the cost increases. Therefore, as a method for solving such a problem, the high heat resistance electric wire 51b and the general electric wire are connected in the middle of the wiring to suppress the increase in cost.

FIG. 5 is a circuit configuration diagram of the refrigerator according to the first embodiment.
As shown in FIG. 5, the temperature sensor 51 and the control device 60 are electrically connected via a wiring 70. The wiring 70 includes a highly heat-resistant (for example, 150 ° C.) electric wire 51 b extending from the temperature sensor 51 and a general heat-resistant (for example, 85 ° C.) electric wire 71 extending from the control device 60 provided in the refrigerator body 1. These are connected in the machine room 11.

  The electric wire 51b is composed of a pair of lead wires 51b1 and 51b2 (sensor-side lead wires). The lead wires 51b1 and 51b2 are, for example, those obtained by coating a copper core wire with an insulator made of cross-linked polyethylene and having a heat resistant temperature of 150 ° C. The lead wires 51 b 1 and 51 b 2 extend downward in the protective cover 47 and then go out of the protective cover 47 and extend into the machine chamber 11.

  The electric wire 71 is composed of a pair of lead wires 71a and 71b (main body side lead wires). The lead wires 71a and 71b are, for example, those obtained by coating a copper core wire with an insulator made of polyvinyl chloride and having a heat resistant temperature of 85 ° C. Lead wires 71 a and 71 b extending from the control device 60 pass through the inside of the heat insulating layer 10 p (see FIG. 1) of the refrigerator body 1 and extend into the machine room 11.

  Then, the lead wires 71a and 71b and the lead wires 51b1 and 51b2 are respectively crimped to be connected (electrically connected) in the machine room 11. The portions where the lead wires 71a and 71b and the lead wires 51b1 and 51b2 are connected and the conductor is exposed are covered and protected by heat-shrinkable insulating tubes 82a and 82b. The insulating tubes 82a and 82b are made of, for example, a flame-retardant polyolefin resin and are formed in a tubular shape, and shrink with a predetermined heating temperature.

  Further, the lead wires 71 a, 71 b, 51 b 1, 51 b 2 exposed in the machine room 11 are collectively covered with a resin tube 83. Thereby, it can prevent that a user touches lead wire 71a, 71b, 51b1, 51b2 itself.

FIG. 6 is a plan view showing the configuration of the crimping part of the refrigerator according to the first embodiment.
As shown in FIG. 6, the temperature sensor 51 includes a pair of lead wires 51b1 and 51b2 extending from the center main body 51a. A pair of lead wires 71a and 71b extend from the control device 60 (see FIGS. 1 and 5).

  When the lead wires 51b1 and 51b2 are connected to the lead wires 71a and 71b, the coating of the ends of the one lead wire 51b1 and the one lead wire 71a is peeled off, and the exposed core wires are connected to the conductive caulking member 81a. It connects by crimping through. A portion where the caulking member 81a is connected by crimping and the conductor is exposed is configured as a crimping portion 91a. Then, a portion where the conductor including the crimping member 81a is exposed is covered with a heat-shrinkable insulating tube 82a, and the insulating tube 82a is thermally contracted by heating at a predetermined temperature so as to be in close contact with the conductor including the crimping member 81a. Thereby, it can prevent that the insulating tube 82a slips | deviates from the crimping | compression-bonding part 91a.

  Similarly, the coating of the tips of the other lead wire 51b2 and the other lead wire 71b is peeled off, and the exposed core wires are crimped together via a caulking member 81b. A portion where the caulking member 81b is connected by crimping and the conductor is exposed is configured as a crimping portion 91b. Then, the insulating tube 82b is covered with a heat-shrinkable insulating tube 82b so as to include the exposed portion of the conductor including the crimping member 81b, and the insulating tube 82b is thermally contracted by heating at a predetermined temperature so as to be in close contact with the conductor including the crimping member 81b. . This can prevent the insulating tube 82b from being displaced from the crimping portion 91b.

  Further, the heat-shrinkable tubes 81 a and 81 b are covered with a single resin tube 83. The resin tube 83 is heat-resistant and non-heat-shrinkable, and covers the entire electric wires 51 b and 71 exposed in the machine room 11.

  As described above, the refrigerator 100 according to the first embodiment is attached to the refrigerator main body 1 including the compressor 12 that compresses the refrigerant, the machine room 11 that stores the compressor 12, and the sealed container 46 of the compressor 12. The temperature sensor 51 for detecting the temperature of the compressor 12 and the wiring 70 for electrically connecting the temperature sensor 51 and the control device 60 provided in the refrigerator main body 1 are provided. In addition, the wiring 70 is formed by crimping lead wires 51b1 and 51b2 extending from the temperature sensor 51 and having heat resistance to the compressor 12, and lead wires 71a and 71b extending from the control device 60. 91b and insulation tubes 82a and 82b that protect the crimping portions 91a and 91b. According to this, since it can replace with a general electric wire in the machine room 11, it is necessary to comprise the whole electric wire which connects between the temperature sensor 51 and the control apparatus 60 of the refrigerator main body 1 with a high heat-resistant lead wire. Thus, the length of the highly heat-resistant electric wire 51b can be shortened, and the increase in cost can be suppressed. In addition, since no connector connection is made, a large insulating tube for protecting the connector is not necessary, so that workability can be improved and an increase in cost can be suppressed.

  In the first embodiment, the crimping portions 91a and 91b are located in the machine chamber 11, and the crimping portions 91a and 91b are covered and protected by the insulating tubes 82a and 82b. According to this, the connection part of lead wire 51b1, 51b2 and lead wire 71a, 71b can be protected reliably.

  In the first embodiment, one crimping portion 91a and the other crimping portion 91b are arranged so as to be shifted in the extending direction S (see FIG. 6) of the wiring 70. According to this, even if the covering of the insulating tubes 82a and 82b is broken, it is possible to prevent a short circuit.

(Second Embodiment)
FIG. 7 is a schematic diagram illustrating a configuration of a lead wire of the refrigerator according to the second embodiment. In addition, about the structure similar to 1st Embodiment, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted.
As shown in FIG. 7, the refrigerator 100 </ b> A of the second embodiment is configured such that the crimping portions 91 a and 91 b are located in the heat insulating layer 10 p (protecting portion) of the refrigerator body 1. Further, the lead wires 51 b 1 and 51 b 2 exposed in the machine chamber 11 and the crimping portions 91 a and 91 b located in the heat insulating layer 10 p are covered with a single resin tube 83. In addition, in this embodiment, although the crimping | compression-bonding part 91a, 91b is covered with the resin tube 83, it does not need to be covered.

  In the second embodiment configured as described above, since the crimping portions 91a and 91b are located in the heat insulating layer 10p, the crimping members 81a and 81b of the crimping portions 91a and 91b are bent and the crimping members 81a and 81b are formed. It can be prevented from being damaged. Moreover, as shown in FIG. 7, when the crimping | compression-bonding parts 91a and 91b are arrange | positioned in the heat insulation layer 10p, it is not necessary to provide the insulation tubes 82a and 82b.

  In addition, this invention is not limited to above-described embodiment, In the range which does not exceed the summary of this invention, it can change variously. For example, in the present embodiment, the case where the crimping portions 91a and 91b are arranged shifted in the extending direction S has been described as an example, but the crimping portion 91a and the crimping portion 91b are separated from each other in a direction orthogonal to the extending direction S. May be arranged. Thereby, even if the lead wires 51b1 and 51b2 have the same length, a short circuit can be prevented.

1 Refrigerator body 10p Heat insulation layer (protection part)
DESCRIPTION OF SYMBOLS 11 Machine room 12 Compressor 46 Sealed container 47 Protective cover 49 Suction pipe 50 Connection connector 51 Temperature sensor 51a Sensor main body 51b Electric wire 51b1, 51b2 Lead wire (sensor side lead wire)
60 Control device 70 Wiring 71 Electric wire 71a, 7ab Lead wire (main body side lead wire)
81a, 81b Caulking member 82a, 82b Insulating tube (protection part)
83 Resin tube 91a, 91b Crimp part 100, 100A Refrigerator

Claims (4)

A compressor for compressing the refrigerant;
A refrigerator body provided with a machine room for storing the compressor;
A temperature sensor that is attached to the housing of the compressor and detects the temperature of the compressor;
Wiring for electrically connecting the temperature sensor and a control device provided in the refrigerator body,
The wiring is
A sensor-side lead wire extending from the temperature sensor and having heat resistance to the compressor;
A main body-side lead wire extending from the control device;
A crimping part formed by crimping the sensor side lead wire and the main body side lead wire;
And a protective part for protecting the crimping part. The crimping part is located in the machine room,
The refrigerator according to claim 1, wherein the protection unit is formed of an insulating tube.   The refrigerator according to claim 1, wherein the crimping portion is located in a heat insulating layer of the refrigerator main body.   4. The wiring according to claim 1, wherein one of the crimping portions and the other crimping portion are arranged so as to be shifted in an extending direction of the wiring. 5. Refrigerator.

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