WO2021210066A1 - Pince de fixation de thermistance et climatiseur - Google Patents

Pince de fixation de thermistance et climatiseur Download PDF

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Publication number
WO2021210066A1
WO2021210066A1 PCT/JP2020/016431 JP2020016431W WO2021210066A1 WO 2021210066 A1 WO2021210066 A1 WO 2021210066A1 JP 2020016431 W JP2020016431 W JP 2020016431W WO 2021210066 A1 WO2021210066 A1 WO 2021210066A1
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WO
WIPO (PCT)
Prior art keywords
holding portion
thermistor
lead wire
pipe
piping
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Application number
PCT/JP2020/016431
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English (en)
Japanese (ja)
Inventor
慈仁 野▲崎▼
畑　茂
Original Assignee
三菱電機株式会社
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Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2020/016431 priority Critical patent/WO2021210066A1/fr
Publication of WO2021210066A1 publication Critical patent/WO2021210066A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems

Definitions

  • the present disclosure relates to a thermistor fixing clip for fixing a pipe thermistor to a refrigerant pipe and an air conditioner provided with a thermistor fixing clip.
  • the refrigerant pipes that make up the refrigeration cycle of an air conditioner or heat pump type hot water supply device are equipped with a thermistor that measures the temperature of the refrigerant pipes.
  • Patent Document 1 proposes a piping clip for fixing the thermistor to a refrigerant pipe.
  • the piping clip described in Patent Document 1 has a pipe holding portion for holding a refrigerant pipe and a thermistor holding portion for holding a thermistor, and fixes the thermistor in parallel with the refrigerant pipe.
  • the conventional piping clip described in Patent Document 1 holds the thermistor and the refrigerant pipe, but does not hold the lead wire provided in the thermistor.
  • the lead wire When guiding a lead wire from a thermistor to a connection destination such as a control board, the lead wire may come into contact with other parts or pipes carelessly, that is, in a situation not intended by the designer. Therefore, in order to prevent the contact, the worker often fixes the lead wire to another place in the refrigerant pipe, for example, with a binding band or the like. However, since the worker manually handles it as a temporary measure, the position where the lead wire is fixed is not always constant. Therefore, fixing with a cable tie has not been a sufficient measure to prevent the lead wire from coming into contact with other parts.
  • This disclosure is made to solve such a problem, and by holding the lead wire in a predetermined place, it is possible to prevent the lead wire from inadvertently contacting other parts or pipes.
  • the purpose is to obtain a thermistor fixing clip and an air conditioner.
  • the thermister fixing clip according to the present disclosure is connected to a refrigerant pipe holding portion for holding a refrigerant pipe and the refrigerant pipe holding portion, and the pipe thermista for detecting the temperature of the refrigerant pipe is thermally brought into contact with the refrigerant pipe.
  • a pipe thermister holding portion for holding and a lead wire holding portion which is connected to the pipe thermister holding portion and holds a lead wire extending from one end of the piping thermista are provided, and the lead wire holding portion includes a first end and a lead wire holding portion.
  • the lead wire holding portion has a second end, the first end of the lead wire holding portion is connected to the piping thermistor holding portion, and the second end of the lead wire holding portion is a free end and is provided so as to be openable and closable. Is what you are doing.
  • the thermistor fixing clip By holding the lead wire of the piping thermistor in a predetermined place by the thermistor fixing clip according to the present disclosure, it is possible to prevent the lead wire from inadvertently contacting other parts or piping.
  • FIG. 1 It is a perspective view which shows the overall appearance of the outdoor unit 1 which concerns on Embodiment 1.
  • FIG. It is a rear view which shows the structure of the outdoor unit 1 in Embodiment 1.
  • FIG. It is a partially enlarged view of the outdoor unit 1 which shows the structure of the thermistor fixing clip 4 which concerns on Embodiment 1.
  • FIG. It is a perspective view which shows the state which attached the thermistor fixing clip 4 which concerns on Embodiment 1 to a refrigerant pipe 2.
  • FIG. 1 It is a rear view which shows the structure of the outdoor unit 1 in Embodiment 1.
  • FIG. It is a partially enlarged view of the outdoor unit 1 which shows the structure of the thermistor fixing clip 4 which
  • FIG. 1 It is a top view which shows the structure of the thermistor fixing clip 4 which concerns on Embodiment 1.
  • FIG. 2 is a perspective view which shows the structure of the thermistor fixing clip 4 which concerns on Embodiment 1.
  • FIG. It is a perspective view which shows the structure of the pipe thermistor 3 which concerns on Embodiment 1.
  • FIG. It is a refrigerant circuit diagram which shows an example of the structure of the air conditioner 10 which concerns on Embodiment 1.
  • the air conditioner 10 according to the first embodiment includes an outdoor unit 1 and an indoor unit 11.
  • FIG. 1 is a perspective view showing the overall appearance of the outdoor unit 1 according to the first embodiment.
  • FIG. 2 is a rear view showing the configuration of the outdoor unit 1 according to the first embodiment. Note that FIG. 2 shows only the parts related to the first embodiment in the configuration of the outdoor unit 1.
  • FIG. 3 is a partially enlarged view of the outdoor unit 1 showing the configuration of the thermistor fixing clip 4 according to the first embodiment.
  • FIG. 4 is a perspective view showing a state in which the thermistor fixing clip 4 according to the first embodiment is attached to the refrigerant pipe 2.
  • FIG. 5 is a perspective view showing a state in which the thermistor fixing clip 4 according to the first embodiment is attached to the refrigerant pipe 2.
  • the lead wire holding portion 4d of the thermistor fixing clip 4 is provided so as to be openable and closable.
  • FIG. 4 shows an open state of the lead wire holding portion 4d
  • FIG. 5 shows a closed state of the lead wire holding portion 4d. Note that in FIGS. 4 and 5, for the sake of explanation, the housing 12 of the outdoor unit 1 is not shown.
  • FIG. 6 is a perspective view showing the configuration of the thermistor fixing clip 4 according to the first embodiment.
  • FIG. 7 is a top view showing the configuration of the thermistor fixing clip 4 according to the first embodiment.
  • FIGS. 6 and 7 show the open state of the lead wire holding portion 4d provided on the thermistor fixing clip 4.
  • FIG. 8 is a perspective view showing the configuration of the thermistor fixing clip 4 according to the first embodiment.
  • FIG. 9 is a top view showing the configuration of the thermistor fixing clip 4 according to the first embodiment.
  • FIGS. 8 and 9 show a closed state of the lead wire holding portion 4d provided on the thermistor fixing clip 4.
  • FIG. 10 is a perspective view showing the configuration of the piping thermistor 3 according to the first embodiment.
  • FIG. 11 is a refrigerant circuit diagram showing an example of the configuration of the air conditioner 10 according to the first embodiment.
  • the outdoor unit 1 of the air conditioner is formed in a rectangular parallelepiped shape, for example, and its outer shell is composed of a housing 12.
  • the housing 12 has a top panel 12a, a front panel 12b, and two side panels 12c.
  • the housing 12 has a back panel 12d and a bottom panel 12e.
  • the front panel 12b is provided with an intake port 12bb for taking in outdoor air.
  • the lower surface panel 12e also serves as a drain pan, and drains drain water or rainwater that has entered the housing 12 to the outside.
  • the drain pan may be provided separately from the lower surface panel 12e.
  • the outdoor unit 1 is provided with a refrigerant pipe 2, a pipe thermistor 3, a thermistor fixing clip 4, and an outdoor heat exchanger 5.
  • the outdoor unit 1 is further provided with a compressor 6, a four-way valve 7, a throttle valve 8, a controller 110, and the like shown in FIG.
  • the refrigerant pipe 2 connects the compressor 6, the four-way valve 7, the outdoor heat exchanger 5, and the throttle valve 8.
  • the outdoor unit 1 shown in FIG. 1 is used, for example, in the air conditioner 10 shown in FIG.
  • FIG. 11 is a refrigerant circuit diagram showing an example of the configuration of the air conditioner 10 according to the first embodiment.
  • the air conditioner 10 includes an outdoor unit 1 and an indoor unit 11.
  • the outdoor unit 1 and the indoor unit 11 are connected to each other by the refrigerant pipe 2.
  • the indoor unit 11 includes an indoor heat exchanger 71, an indoor blower 61, a controller 111, and a part of the refrigerant pipe 2.
  • the indoor blower 61 blows air to the indoor heat exchanger 71.
  • the indoor heat exchanger 71 has a heat transfer tube and fins.
  • the indoor heat exchanger 71 is, for example, a fin-and-tube heat exchanger.
  • the indoor heat exchanger 71 exchanges heat between the refrigerant flowing through the heat transfer tube and the air.
  • the indoor heat exchanger 71 functions as a condenser when the air conditioner 10 heats the indoor unit 11 side, and functions as an evaporator when the indoor unit 11 side is cooled.
  • the indoor blower 61 is, for example, a propeller fan.
  • the indoor blower 61 is composed of a fan motor 61a and a fan 61b.
  • the fan 61b rotates using the fan motor 61a as a power source.
  • the rotation speed of the indoor blower 61 is controlled by the controller 111.
  • the outdoor unit 1 includes an outdoor heat exchanger 5, a controller 110, a compressor 6, a four-way valve 7, a throttle valve 8, an outdoor blower 9, and a refrigerant pipe 2. Has a part.
  • the outdoor unit 1 may further include other components such as an accumulator.
  • the outdoor heat exchanger 5 has a heat transfer tube and fins.
  • the outdoor heat exchanger 5 is, for example, a fin-and-tube heat exchanger.
  • the outdoor heat exchanger 5 exchanges heat between the refrigerant flowing inside the heat transfer tube and the air flowing outside the heat transfer tube.
  • the outdoor heat exchanger 5 functions as an evaporator when the air conditioner 10 heats the indoor unit 11 side, and functions as a condenser when the indoor unit 11 side is cooled.
  • the outdoor blower 9 blows air to the outdoor heat exchanger 5.
  • the outdoor blower 9 is, for example, a propeller fan.
  • the outdoor blower 9 is composed of a fan motor 9a and a fan 9b, similarly to the indoor blower 61.
  • the rotation speed of the outdoor blower 9 is controlled by the controller 110.
  • the compressor 6 sucks in a low-pressure gas refrigerant, compresses it, and discharges it as a high-pressure gas refrigerant.
  • the compressor 6 is, for example, an inverter compressor.
  • the inverter compressor can change the amount of refrigerant delivered per unit time by controlling the inverter circuit or the like.
  • the inverter circuit is mounted on the controller 110, for example.
  • the four-way valve 7 is a valve for switching the flow direction of the refrigerant in the refrigerant pipe 2.
  • the four-way valve 7 is switched between the case where the air conditioner 10 is in the cooling operation and the case where the air conditioner 10 is in the heating operation under the control of the controller 110.
  • the air conditioner 10 cools the indoor unit 11 side
  • the four-way valve 7 is in the state shown by the solid line in FIG.
  • the refrigerant discharged from the compressor 6 flows into the outdoor heat exchanger 5 arranged in the outdoor unit 1.
  • the four-way valve 7 is in the state shown by the broken line in FIG.
  • the refrigerant discharged from the compressor 6 flows into the indoor heat exchanger 71 arranged in the indoor unit 11.
  • the throttle valve 8 decompresses the inflowing liquid refrigerant by a throttle action and flows out so that the refrigerant liquefied by the condenser can be easily evaporated by the evaporator. Further, the throttle valve 8 adjusts the amount of refrigerant so as to maintain an appropriate amount of refrigerant according to the load of the evaporator.
  • the throttle valve 8 is composed of, for example, an electronic expansion valve. The opening degree of the throttle valve 8 is controlled by the controller 110. As shown in FIG. 11, the throttle valve 8 is connected between the outdoor heat exchanger 5 and the indoor heat exchanger 71 by a refrigerant pipe 2.
  • the refrigerant pipe 2 constitutes a refrigerant circuit by connecting a compressor 6, a four-way valve 7, an outdoor heat exchanger 5, a throttle valve 8, and an indoor heat exchanger 71.
  • the refrigerant pipe 2 is connected to the heat transfer tube of the outdoor heat exchanger 5 and the heat transfer tube of the indoor heat exchanger 71.
  • the refrigerant pipe 2 has a circular pipe shape.
  • the controller 110 controls the operation of the outdoor unit 1.
  • the controller 111 controls the operation of the indoor unit 11.
  • Each function of the controller 110 and the controller 111 is realized by a processing circuit.
  • the processing circuit is composed of dedicated hardware or a processor.
  • the dedicated hardware is, for example, an ASIC (Application Specific Integrated Circuit) or an FPGA (Field Programmable Gate Array).
  • the processor executes a program stored in memory.
  • Each of the controller 110 and the controller 111 has a storage device. These storage devices are composed of memories.
  • the memory is a non-volatile or volatile semiconductor memory such as RAM (RandomAccessMemory), ROM (ReadOnlyMemory), flash memory, EPROM (ErasableProgrammableROM), or a disk such as a magnetic disk, flexible disk, or optical disk.
  • RAM RandomAccessMemory
  • ROM ReadOnlyMemory
  • flash memory EPROM (ErasableProgrammableROM)
  • disk such as a magnetic disk, flexible disk, or optical disk.
  • the pipe thermistor 3 is attached to the refrigerant pipe 2 as shown in FIG. As shown in FIG. 9, the pipe thermistor 3 and the refrigerant pipe 2 are fixed by the thermistor fixing clip 4, so that the pipe thermistor 3 and the refrigerant pipe 2 are in thermal contact with each other. Further, at this time, the pipe thermistor 3 and the refrigerant pipe 2 are arranged so as to be parallel to each other. Specifically, the longitudinal direction of the cylindrical pipe thermistor 3 and the longitudinal direction of the circular tubular refrigerant pipe 2 are parallel to each other. The pipe thermistor 3 detects the temperature of the refrigerant flowing in the refrigerant pipe 2 by measuring the temperature of the refrigerant pipe 2. As shown in FIG.
  • the pipe thermistor 3 is composed of, for example, a metal pipe having a cylindrical shape.
  • the metal tube is made of a metal having high thermal conductivity such as copper.
  • a temperature sensitive element (not shown) such as a thermistor is provided in the piping thermistor 3.
  • a lead wire 3a is connected to the temperature sensitive element. As shown in FIG. 10, the lead wire 3a extends from one end of the piping thermistor 3. In the example of FIG. 10, the lead wire 3a extends from the lower end of the piping thermistor 3.
  • the lead wire 3a is composed of, for example, a conductive wire, a signal wire, or a harness. As shown in FIG. 10, the lead wire 3a may be composed of a plurality of lead wires 3a.
  • the thermistor fixing clip 4 has a refrigerant pipe holding portion 4a, a pipe thermistor holding portion 4b, a bent portion 4c, and a lead wire holding portion 4d.
  • the thermistor fixing clip 4 is made of a metal such as stainless steel.
  • the thermistor fixing clip 4 is composed of, for example, one rectangular metal plate. In that case, by bending the metal plate, the refrigerant pipe holding portion 4a, the pipe thermistor holding portion 4b, the bent portion 4c, and the lead wire holding portion 4d are formed. As shown in FIG.
  • the lengths of the refrigerant pipe holding portion 4a, the pipe thermistor holding portion 4b, the bent portion 4c, and the lead wire holding portion 4d in the vertical direction are all the same.
  • the length is referred to as a length H.
  • the refrigerant pipe holding portion 4a has a C-shape in a plan view. More specifically, the refrigerant pipe holding portion 4a is composed of a tip portion 4aa, an arc-shaped portion 4ab, and a flat portion 4ac.
  • the refrigerant pipe holding portion 4a is a leaf spring having elasticity.
  • the refrigerant pipe holding portion 4a holds the refrigerant pipe 2 by elasticity in a state of being in close contact with a part of the outer surface of the refrigerant pipe 2. Since the refrigerant pipe 2 has a circular pipe shape, the shape of the inner wall of the arc-shaped portion 4ab has a shape along the outer surface of the refrigerant pipe 2.
  • the flat portion 4ac of the refrigerant pipe holding portion 4a has a flat plate-like shape.
  • the flat portion 4ac is connected to the piping thermistor holding portion 4b.
  • the end portion of the flat portion 4ac connected to the pipe thermistor holding portion 4b is referred to as a first end 4ad of the refrigerant pipe holding portion 4a.
  • the tip portion 4aa of the refrigerant pipe holding portion 4a extends in a direction away from the refrigerant pipe 2.
  • the tip portion 4aa constitutes the second end of the refrigerant pipe holding portion 4a.
  • the C-shaped shape of the refrigerant pipe holding portion 4a is open in the second direction in a plan view.
  • the tip portion 4aa of the refrigerant pipe holding portion 4a is inclined in the first direction opposite to the second direction.
  • the first direction and the second direction are directions perpendicular to the longitudinal direction of the refrigerant pipe 2. That is, the first direction and the second direction are, for example, one of the radial directions of the refrigerant pipe 2. Further, in the example of FIG. 7, the first direction is the right direction of the paper surface, and the second direction is the left direction of the paper surface. Further, in the example of FIG. 7, in a plan view, the direction is parallel to the longitudinal direction of the flat portion 4ac and the longitudinal direction of the flat portion 4bc described later.
  • the piping thermistor holding portion 4b has a C-shape in a plan view. More specifically, the pipe thermistor holding portion 4b is composed of a tip portion 4ba, an arc-shaped portion 4bb, and a flat portion 4bc.
  • the pipe thermistor holding portion 4b is a leaf spring having elasticity.
  • the pipe thermistor holding portion 4b holds the pipe thermistor 3 by elasticity in a state of being in close contact with a part of the outer surface of the pipe thermistor 3.
  • the pipe thermistor holding portion 4b holds the pipe thermistor 3 in thermal contact with the refrigerant pipe 2.
  • the curvature R2 may be the same as or different from the above-mentioned curvature R1. That is, when the radius r1 of the refrigerant pipe 2 and the radius r2 of the pipe thermistor 3 are equal, the curvature R1 and the curvature R2 are equal.
  • the flat portion 4bc of the piping thermistor holding portion 4b has a flat plate shape.
  • the flat portion 4bc is connected to the flat portion 4ac of the refrigerant pipe holding portion 4a.
  • the end portion of the flat portion 4bc connected to the refrigerant pipe holding portion 4a is referred to as the first end 4bd of the piping thermistor holding portion 4b.
  • the tip portion 4ba of the pipe thermistor holding portion 4b extends in a direction away from the pipe thermistor 3.
  • the tip portion 4ba of the pipe thermistor holding portion 4b constitutes the second end of the pipe thermistor holding portion 4b.
  • the tip portion 4ba is connected to the arc-shaped portion 4bb and the bent portion 4c.
  • the lead wire holding portion 4d has a C-shape in a plan view.
  • the lead wire holding portion 4d is composed of a first arc-shaped portion 4da, a second arc-shaped portion 4db, and a tip portion 4dd.
  • the first end 4dc of the first arc-shaped portion 4da is connected to the bent portion 4c.
  • the first arc-shaped portion 4da constitutes most of the lead wire holding portion 4d, and is the main body of the lead wire holding portion 4d.
  • the curvature R3 of the inner wall of the first arc-shaped portion 4da is smaller than the curvature R2 of the inner wall of the arc-shaped portion 4bb of the piping thermistor holding portion 4b.
  • the lead wire holding portion 4d is formed in a curved shape having a gentler curve than the piping thermistor holding portion 4b.
  • the curvature R4 of the inner wall of the second arc-shaped portion 4db is larger than the curvature R3 of the inner wall of the first arc-shaped portion 4da. That is, the second arc-shaped portion 4db has a sharper curve than the first arc-shaped portion 4da.
  • the second arc-shaped portion 4db is connected to the other end of the first arc-shaped portion 4da.
  • the tip portion 4dd of the lead wire holding portion 4d has no curvature and has a flat plate-like shape.
  • the tip portion 4dd of the lead wire holding portion 4d constitutes the second end of the lead wire holding portion 4d.
  • the second arc-shaped portion 4db simply functions as a connecting portion for connecting the first arc-shaped portion 4da and the tip portion 4dd, and the curvature R4 can connect the first arc-shaped portion 4da and the tip portion 4dd.
  • the curvature R4 may be greater than or less than the curvature R3.
  • the lead wire holding unit 4d holds the lead wire 3a. As shown in FIG. 7, the first end 4dc of the lead wire holding portion 4d is connected to the pipe thermistor holding portion 4b via the bent portion 4c.
  • the tip portion 4dd which is the second end of the lead wire holding portion 4d, has a free end.
  • the tip portion 4dd is provided so as to be openable and closable with respect to the piping thermistor holding portion 4b.
  • the lead wire holding portion 4d can rotate around the bent portion 4c. Therefore, the bent portion 4c opens and closes with respect to the pipe thermistor holding portion 4b by rotating.
  • 6 and 7 show the open state of the lead wire holding portion 4d, and FIGS.
  • FIGS. 8 and 9 show the closed state of the lead wire holding portion 4d.
  • the lead wire holding portion 4d is closed when the tip portion 4dd of the lead wire holding portion 4d comes into contact with the pipe thermistor holding portion 4b.
  • a space 40 is formed between the pipe thermistor holding portion 4b and the lead wire holding portion 4d.
  • the lead wire 3a is arranged in the space 40.
  • the bent portion 4c is not bent.
  • the tip portion 4dd of the lead wire holding portion 4d is separated from the piping thermistor holding portion 4b, and the lead wire holding portion 4d is in an open state.
  • the upper end and the lower end of the refrigerant pipe holding portion 4a, the pipe thermistor holding portion 4b, and the lead wire holding portion 4d are open ends, respectively.
  • the bent portion 4c is provided between the piping thermistor holding portion 4b and the lead wire holding portion 4d.
  • the bent portion 4c connects the piping thermistor holding portion 4b and the lead wire holding portion 4d.
  • the bent portion 4c has a pair of notched portions 41 as shown in FIGS. 6 and 8.
  • the cutout portion 41 is provided at the upper end and the lower end of the bent portion 4c.
  • the thermistor fixing clip 4 can be bent at the bent portion 4c. 6 and 7 show a state in which the thermistor fixing clip 4 is not bent, and FIGS. 8 and 9 show a state in which the thermistor fixing clip 4 is bent.
  • the lead wire holding portion 4d is connected to the pipe thermistor holding portion 4b via the bent portion 4c. In this way, the lead wire holding portion 4d is opened and closed by bending the thermistor fixing clip 4 by the bent portion 4c.
  • the distance L3 is a straight line distance at the narrowest position between the tip portion 4aa of the refrigerant pipe holding portion 4a and the tip portion 4ba of the pipe thermistor holding portion 4b.
  • the gap is provided for inserting the refrigerant pipe 2 and the pipe thermistor 3 into the thermistor fixing clip 4 from the horizontal direction instead of the vertical direction.
  • the piping thermistor holding portion 4b has a C-shape that opens in the first direction in a plan view.
  • the lead wire holding portion 4d has a C-shaped shape that opens in the second direction in a plan view. Therefore, the pipe thermistor holding portion 4b and the lead wire holding portion 4d are opened in opposite directions. Therefore, when the lead wire holding portion 4d is in the open state, as shown in FIG. 7, the piping thermistor holding portion 4b and the lead wire holding portion 4d form an S-shape in a plan view.
  • the length from the first end to the second end of the pipe thermistor holding portion 4b is defined as the length L1
  • the length from the first end to the second end of the lead wire holding portion 4d is defined as the length L1.
  • the length is L2.
  • the length L1 is not a straight line distance between the first end and the second end of the pipe thermistor holding portion 4b, but a total length on a curve along the shape of the outer surface of the pipe thermistor holding portion 4b. That is, the length L1 is a length including the tip portion 4ba of the pipe thermistor holding portion 4b, the arc-shaped portion 4bb, and the flat portion 4bc.
  • the length L2 is not a straight line distance between the first end and the second end of the lead wire holding portion 4d, but a total length on a curve along the shape of the outer surface of the lead wire holding portion 4d. That is, the length L2 is a length including the first arc-shaped portion 4da, the second arc-shaped portion 4db, and the tip portion 4dd of the lead wire holding portion 4d.
  • the length L2 of the lead wire holding portion 4d is equal to or longer than the length L1 of the piping thermistor holding portion 4b. Therefore, when the lead wire holding portion 4d is closed, a space 40 is formed between the pipe thermistor holding portion 4b and the lead wire holding portion 4d, as shown in FIG.
  • the lead wire holding portion 4d has a C-shape that opens in the first direction in a plan view.
  • Both the lead wire holding portion 4d and the pipe thermistor holding portion 4b have a C-shape that opens in the first direction.
  • the lead wire holding portion 4d and the piping thermistor holding portion 4b are arranged side by side in a plan view.
  • the lead wire holding portion 4d By bending the bent portion 4c in this way, the lead wire holding portion 4d is closed.
  • the closed lead wire holding portion 4d holds the lead wire 3a of the piping thermistor 3.
  • the lead wire holding portion 4d can be opened and closed not only because the upper end and the lower end are open, but also because the tip portion 4dd is a free end. Therefore, the lead wire 3a can be inserted from the tip end portion 4dd, and it is not necessary to insert the lead wire 3a from the upper end or the lower end of the lead wire holding portion 4d. As a result, the worker can easily hold the lead wire 3a by the lead wire holding unit 4d.
  • the refrigerant pipe holding portion 4a has a first end on the pipe thermistor holding portion 4b side and a second end constituting the tip portion 4aa. Further, the pipe thermistor holding portion 4b has a first end on the refrigerant pipe holding portion 4a side and a second end constituting the tip portion 4ba. As shown in FIG. 7, the first end of the refrigerant pipe holding portion 4a and the first end of the pipe thermistor holding portion 4b are connected to each other. Therefore, the refrigerant pipe holding portion 4a and the pipe thermistor holding portion 4b form a U-shape in a plan view. Further, as shown in FIG.
  • a gap L3 for inserting the refrigerant pipe 2 and the pipe thermistor 3 is provided between the second end of the refrigerant pipe holding portion 4a and the second end of the pipe thermistor holding portion 4b. Is provided. Therefore, the refrigerant pipe holding portion 4a and the pipe thermistor holding portion 4b form a U-shape in a plan view.
  • the operation of the thermistor fixing clip 4 will be described.
  • the pipe thermistor 3 is fixed by the pipe thermistor holding portion 4b as shown in FIG.
  • the refrigerant pipe holding portion 4a fixes the refrigerant pipe 2 attached to the outdoor unit 1.
  • the tip portion 4aa of the refrigerant pipe holding portion 4a is inclined in the first direction shown in FIG. 7. Therefore, the worker can increase the inner diameter of the refrigerant pipe holding portion 4a by pushing the tip portion 4aa in the first direction with a finger, and attach the refrigerant pipe holding portion 4a to the refrigerant pipe 2.
  • the lead wire 3a of the piping thermistor 3 is routed and connected to the control board to be connected.
  • the lead wire 3a extends outward from the lower end of the pipe thermistor 3.
  • the control board is arranged above the piping thermistor 3. Therefore, as shown in FIG. 4, the lead wire 3a is bent into a U shape and is routed upward. Since the lead wire holding portion 4d is in the open state, the lead wire 3a is inserted into the lead wire holding portion 4d as shown in FIGS. 4 and 7. After that, by bending the bent portion 4c of the thermistor fixing clip 4, the lead wire holding portion 4d is closed as shown in FIGS. 5 and 9. As a result, as shown in FIG.
  • the lead wire 3a is held in the space 40 formed between the pipe thermistor holding portion 4b and the lead wire holding portion 4d. Further, as shown in FIG. 9, the refrigerant pipe 2 and the pipe thermistor 3 are thermally adhered to each other in a state of being held by the thermistor fixing clip 4. As a result, the piping thermistor 3 can accurately measure the temperature of the refrigerant piping 2.
  • the lead wire 3a is arranged in the space 40 formed when the bent portion 4c is bent.
  • the lead wires were fixed with a binding band or the like, the positions of the lead wires were not always the same, and the work process of the workers was increased.
  • the lead wire holding portion 4d is a part of the thermistor fixing clip 4, it can always be fixed to the piping thermistor holding portion 4b at a predetermined position.
  • the lead wire holding portion 4d is composed of, for example, a claw-shaped member
  • the lead wire 3a may come off from the gap between the claws.
  • the lead wire holding portion 4d is made into a through hole, since a connector for connecting to the connection destination is provided in the lead wire 3a, it is necessary to increase the inner diameter of the through hole so that the connector can pass through the through hole. There is. As a result, the holding force of the lead wire 3a becomes small.
  • the first embodiment as shown in FIG.
  • the lead wire 3a is arranged inside the lead wire holding portion 4d, and then the bent portion 4c of the thermistor fixing clip 4 is bent.
  • the lead wire 3a is held in the space 40 formed between the lead wire holding portion 4d and the pipe thermistor holding portion 4b.
  • the size of the space 40 can be freely changed by appropriately determining the curvature R3 of the lead wire holding portion 4d. Therefore, a sufficient holding force of the lead wire 3a can be secured. Further, since it is not necessary to pass the lead wire 3a through a hole or the like, it is not necessary to consider the size of the connector when determining the size of the space 40. As described above, in the first embodiment, the lead wire 3a of the piping thermistor 3 can be easily and surely held.

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  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)
  • Other Air-Conditioning Systems (AREA)

Abstract

L'invention concerne une pince de fixation de thermistance qui comprend : une unité de maintien de tuyau de fluide frigorigène qui maintient un tuyau de fluide frigorigène ; une unité de maintien de thermistance de tuyau qui est reliée à l'unité de maintien de tuyau de fluide frigorigène et qui maintient une thermistance de tuyau, qui détecte la température du tuyau de fluide frigorigène, en contact thermique avec le tuyau de fluide frigorigène ; et une unité de maintien de fil conducteur qui est connectée à l'unité de maintien de thermistance de tuyau et qui maintient un fil conducteur qui s'étend à partir d'une extrémité de la thermistance de tuyau. L'unité de maintien de fil conducteur comporte une première extrémité et une seconde extrémité. La première extrémité de l'unité de maintien de fil conducteur est reliée à l'unité de maintien de thermistance de tuyau, et la seconde extrémité de l'unité de maintien de fil conducteur est une extrémité libre, qui est disposée de façon à pouvoir être ouverte et fermée.
PCT/JP2020/016431 2020-04-14 2020-04-14 Pince de fixation de thermistance et climatiseur WO2021210066A1 (fr)

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PCT/JP2020/016431 WO2021210066A1 (fr) 2020-04-14 2020-04-14 Pince de fixation de thermistance et climatiseur

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113891641A (zh) * 2021-12-08 2022-01-04 山东理工职业学院 用于船舶电子设备的液冷系统及其调节方法

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JPS51144762U (fr) * 1975-05-15 1976-11-20
JPS59145219U (ja) * 1983-03-16 1984-09-28 株式会社大井製作所 自動車用ドア内の電気配線用止め具
JPH08261610A (ja) * 1995-03-28 1996-10-11 Toshiba Corp 温度センサの取付装置
JP2002340453A (ja) * 2001-05-18 2002-11-27 Denso Corp 配管クリップ
CN204043804U (zh) * 2014-07-01 2014-12-24 青岛海信日立空调系统有限公司 温度传感器的装配结构及其中的固定卡簧
CN205825351U (zh) * 2016-06-07 2016-12-21 合肥美的暖通设备有限公司 一种感温包固定卡、感温包固定组件及空调

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51144762U (fr) * 1975-05-15 1976-11-20
JPS59145219U (ja) * 1983-03-16 1984-09-28 株式会社大井製作所 自動車用ドア内の電気配線用止め具
JPH08261610A (ja) * 1995-03-28 1996-10-11 Toshiba Corp 温度センサの取付装置
JP2002340453A (ja) * 2001-05-18 2002-11-27 Denso Corp 配管クリップ
CN204043804U (zh) * 2014-07-01 2014-12-24 青岛海信日立空调系统有限公司 温度传感器的装配结构及其中的固定卡簧
CN205825351U (zh) * 2016-06-07 2016-12-21 合肥美的暖通设备有限公司 一种感温包固定卡、感温包固定组件及空调

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113891641A (zh) * 2021-12-08 2022-01-04 山东理工职业学院 用于船舶电子设备的液冷系统及其调节方法
CN113891641B (zh) * 2021-12-08 2022-03-22 山东理工职业学院 用于船舶电子设备的液冷系统及其调节方法

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