WO2018042495A1 - Appareil à cycle de réfrigération - Google Patents

Appareil à cycle de réfrigération Download PDF

Info

Publication number
WO2018042495A1
WO2018042495A1 PCT/JP2016/075219 JP2016075219W WO2018042495A1 WO 2018042495 A1 WO2018042495 A1 WO 2018042495A1 JP 2016075219 W JP2016075219 W JP 2016075219W WO 2018042495 A1 WO2018042495 A1 WO 2018042495A1
Authority
WO
WIPO (PCT)
Prior art keywords
compressor
light
oil
refrigeration cycle
cycle apparatus
Prior art date
Application number
PCT/JP2016/075219
Other languages
English (en)
Japanese (ja)
Inventor
貴玄 中村
中川　博之
辰也 佐々木
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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 JP2018536537A priority Critical patent/JP6641490B2/ja
Priority to PCT/JP2016/075219 priority patent/WO2018042495A1/fr
Publication of WO2018042495A1 publication Critical patent/WO2018042495A1/fr

Links

Images

Classifications

    • 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 invention relates to a refrigeration cycle apparatus, and more particularly to a refrigeration cycle apparatus in which refrigeration oil that suppresses wear of sliding parts such as a compressor is enclosed.
  • the refrigeration cycle apparatus includes a refrigerant circuit including, for example, a compressor, a condenser, a throttling device, and an evaporator.
  • a compressor since the compressor includes a compression mechanism that compresses the refrigerant, the refrigeration cycle apparatus is filled with refrigerating machine oil that suppresses wear of the sliding portion of the compression mechanism.
  • a technique has been proposed in which a sight glass is provided in the piping of the refrigeration cycle apparatus so that the deterioration state of the refrigeration oil can be determined visually (for example, see Patent Document 1).
  • the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a refrigeration cycle apparatus that can automatically and accurately detect the state of refrigeration oil in the refrigeration cycle apparatus. .
  • a refrigeration cycle apparatus is provided in a refrigerant circuit including a compressor, a condenser, a throttling device, and an evaporator, and a flow path from the refrigerant circuit to the evaporator, the compressor, and the condenser, and transmits light.
  • the light detection unit that is provided in the light emitting unit and detects the light of the light emitting unit, and whether or not the refrigerating machine oil in the refrigerant circuit is deteriorated or compressed And a control unit that determines whether or not the machine is damaged, and a notification unit that notifies whether or not the refrigerating machine oil in the refrigerant circuit is deteriorated or whether the compressor is damaged.
  • the light-emitting unit and the light detection sensor are provided, and the control device determines whether or not the refrigerating machine oil in the refrigerant circuit is deteriorated based on the detection result of the light detection sensor, or the compressor is damaged. Whether or not the state of the refrigerating machine oil can be automatically and accurately detected.
  • FIG. 1 is an explanatory diagram of the refrigerant circuit C of the refrigeration cycle apparatus 100 according to the present embodiment.
  • FIG. 2 is an explanatory diagram of the oil separator 2 of the refrigeration cycle apparatus 100 according to the present embodiment.
  • the refrigeration cycle apparatus 100 of the present embodiment can be applied to, for example, an air conditioner, a refrigeration apparatus, a heat pump water heater, and the like.
  • the refrigeration cycle apparatus 100 may be provided with a four-way valve so that a cooling operation and a heating operation can be performed.
  • the refrigeration cycle apparatus 100 includes a refrigerant circuit C that circulates refrigerant.
  • the refrigerant circuit C includes a compressor 1, an oil separator 2, a condenser 3, a throttling device 4, an evaporator 5, an accumulator 6, and refrigerant pipes P1 to P8.
  • the refrigerant circuit C included in the refrigeration cycle apparatus 100 includes an oil return circuit C1 that returns the refrigeration oil separated from the refrigerant by the oil separator 2 to the compressor 1.
  • the refrigeration cycle apparatus 100 includes a condenser fan 3 ⁇ / b> A attached to the condenser 3 and an evaporator fan 5 ⁇ / b> A attached to the evaporator 5.
  • the refrigeration cycle apparatus 100 includes a light emitting unit 21 provided in the oil separator 2, a light detection sensor 22 provided in the oil separator 2, and a control device 50 that outputs a detection result of the light detection sensor 22. And a notification unit 51 controlled by the control device 50.
  • Compressor 1 is a fluid machine that compresses sucked low-pressure refrigerant and discharges it as high-pressure refrigerant.
  • the compressor 1 of the present embodiment is configured such that the rotational speed is controlled by an inverter.
  • the compressor 1 includes a refrigerant discharge portion that discharges high-pressure refrigerant and a refrigerant suction portion that sucks low-pressure refrigerant that circulates and returns through the refrigerant circuit C.
  • the oil separator 2 is provided on the discharge side of the compressor 1 and has a function of storing refrigeration oil separated from the refrigerant.
  • the oil separator 2 is connected to the container 2A in which a space for storing refrigerating machine oil is formed, the refrigerant inflow part 2B1 connected to the container 2A, the refrigerant outflow part 2B2 connected to the container 2A, and the container 2A. And an oil outflow portion 2B3.
  • the oil separator 2 includes a light transmissive member 2C provided in the container 2A, and a light transmissive member 2D provided in the container 2A and disposed at a position facing the light transmissive member 2C.
  • Container 2A includes a cylindrical side surface portion, a bottom portion connected to the lower end of the side surface portion, and a top surface portion (upper surface portion) connected to the upper end of the side surface portion.
  • a refrigerant inflow portion 2B1 is connected to the side surface portion of the container 2A.
  • the gas refrigerant discharged from the compressor 1 flows into the container 2A from the refrigerant inflow portion 2B1.
  • coolant outflow part 2B2 is connected to the top
  • An oil outflow portion 2B3 is connected to the bottom of the container 2A.
  • the end of the oil outflow part 2B3 into which the refrigerating machine oil in the container 2A flows is disposed above the bottom of the container 2A.
  • the refrigerating machine oil Oi flows out after a certain amount of refrigerating machine oil Oi has accumulated in the container 2A, and the light detection sensor 22 can easily detect the state of the refrigerating machine oil.
  • Refrigerant inflow part 2B1, refrigerant outflow part 2B2, and oil outflow part 2B3 can be constituted by piping.
  • the refrigerant inflow part 2B1 is connected to the refrigerant pipe P1
  • the refrigerant outflow part 2B2 is connected to the refrigerant pipe P3
  • the oil outflow part 2B3 is connected to the refrigerant pipe P7.
  • the light transmissive member 2C and the light transmissive member 2D are disposed below the container 2A in the vertical direction of the container 2A.
  • the light transmissive member 2C is disposed at a position opposite to the light emitting unit 21, and is configured such that light emitted from the light emitting unit 21 enters the container 2A.
  • the light transmissive member 2D is disposed at a position opposite to the light detection sensor 22, and is configured such that the light detection sensor 22 can receive light that has exited the light emitting portion 21 and entered the container 2A.
  • a light emitting unit 21, a light transmitting member 2C, a light transmitting member 2D, and a light detection sensor 22 are linearly arranged in this order.
  • the oil outflow portion 2B3 is not positioned on a straight line connecting the light emitting portion 21, the light transmitting member 2C, the light transmitting member 2D, and the light detection sensor 22. This is to prevent the light from the light emitting unit 21 from being blocked by the oil spill unit 2B3 and the light detection sensor 22 from receiving the light.
  • the oil outflow portion 2B3 is arranged at a position shifted in a horizontal direction from a straight line connecting the light emitting portion 21, the light transmitting member 2C, the light transmitting member 2D, and the light detection sensor 22, Good.
  • the light transmissive member 2C and the light transmissive member 2D can be made of, for example, transparent glass, or can be made of a transparent resin.
  • the oil return circuit C1 is a circuit in which one end is connected to the oil separator 2 and the other end is connected to the suction side of the compressor 1.
  • the oil return circuit C1 includes a refrigerant pipe P7, a throttle device 7, and a refrigerant pipe P8.
  • the expansion device 7 can be composed of, for example, a capillary tube.
  • the condenser 3 can be configured, for example, as an air-cooled heat exchanger that performs heat exchange between the refrigerant circulating inside and the air blown by the condenser fan 3A.
  • the air-cooling heat source side heat exchanger can be configured as, for example, a cross-fin type fin-and-tube heat exchanger including a heat transfer tube and a plurality of fins.
  • the condenser is also referred to as a radiator.
  • the condenser fan 3 ⁇ / b> A can variably adjust the flow rate of air supplied to the condenser 3.
  • the condenser fan 3A is, for example, a propeller fan driven by a DC fan motor.
  • the throttle device 4 is, for example, an electronic expansion valve whose opening degree can be adjusted.
  • a linear electronic expansion valve is used as the electronic expansion valve.
  • the expansion device 4 can also use other decompression means such as a capillary tube.
  • the evaporator 5 can be configured, for example, as an air-cooled heat exchanger that performs heat exchange between the refrigerant circulating inside and the air blown by the evaporator fan 5A.
  • the evaporator 5 can be configured as a fin-and-tube heat exchanger.
  • the evaporator fan 5A can variably adjust the flow rate of air supplied to the evaporator 5.
  • the evaporator fan 5A is, for example, a propeller fan driven by a DC fan motor.
  • the accumulator 6 is configured to prevent a large amount of liquid refrigerant from flowing into the compressor 1 by retaining a refrigerant storage function for storing excess refrigerant and liquid refrigerant that is temporarily generated when the operating state changes. And a liquid separation function.
  • the accumulator 6 includes a refrigerant inflow portion and a refrigerant outflow portion.
  • the accumulator 6 has a refrigerant inflow portion connected to the evaporator 5.
  • the accumulator 6 has a refrigerant inflow portion connected to the oil return circuit C1.
  • the accumulator 6 has a refrigerant outflow portion connected to the compressor 1 on the refrigerant suction side.
  • the refrigerant pipe P ⁇ b> 1 has one end connected to the suction side of the compressor 1 and the other end connected to the oil separator 2.
  • the refrigerant pipe P2 has one end connected to the oil separator 2 and the other end connected to the condenser 3.
  • the refrigerant pipe P3 has one end connected to the condenser 3 and the other end connected to the expansion device 4.
  • the refrigerant pipe P4 has one end connected to the expansion device 4 and the other end connected to the evaporator 5.
  • the refrigerant pipe P5 has one end connected to the evaporator 5 and the other end connected to the accumulator 6.
  • the refrigerant pipe P6 has one end connected to the accumulator 6 and the other end connected to the suction side of the compressor 1.
  • the refrigerant pipe P7 has one end connected to the oil separator 2 and the other end connected to the expansion device 7.
  • One end of the refrigerant pipe P8 is connected to the expansion device 7, and the other end is connected to an intermediate part of the refrigerant pipe P5.
  • coolant piping P5 is a part between one end of the refrigerant
  • the light emitting unit 21 is configured to emit white light.
  • the light emission part 21 can be comprised by white LED which irradiates white light, for example.
  • the light emitting unit 21 is disposed outside the container 2A and faces the space inside the container 2A via the light transmitting member 2C.
  • the light detection sensor 22 is composed of an RGB sensor that detects the red wavelength, the green wavelength, and the blue wavelength of the received light.
  • the light detection sensor 22 is provided in the light emitting unit 21. Specifically, the light detection sensor 22 is disposed in the light irradiation direction of the light emitting unit 21 and is provided at a position facing the light emitting unit 21.
  • the light detection sensor 22 is disposed outside the container 2A and faces the space in the container 2A via the light transmission member 2D.
  • the light detection sensor 22 can be configured by a spectroscope and a plurality of CCD elements.
  • the spectroscope can be composed of, for example, a prism that can be decomposed into red light, green light, and blue light.
  • the control device 50 includes, for example, a microcomputer including a CPU and a storage unit.
  • the control device 50 controls the rotation number of the compressor 1, the opening degree of the expansion device 4, the rotation number of the condenser fan 3A, the rotation number of the evaporator fan 5A, the notification unit 51, and the light emitting unit 21.
  • the original function of suppressing wear of the sliding portion of the compressor 1 may be impaired.
  • the refrigerating machine oil deteriorates, it turns brown (first state). Further, if the sliding portion of the compressor 1 cannot be properly lubricated by the refrigerating machine oil, the sliding portion is shaved and the refrigerating machine oil changes to black (second state).
  • the control device 50 makes a determination regarding the color of the refrigerating machine oil based on the detection result of the light detection sensor 22. By this determination, the control device 50 determines whether or not the refrigerating machine oil in the refrigerant circuit C is deteriorated or whether or not the compressor 1 is damaged.
  • the notification unit 51 performs notification regarding deterioration of refrigeration oil or notification regarding damage to the compressor 1.
  • the notification unit 51 may be configured to notify by displaying on a display such as a remote controller, may be configured to notify by displaying with a lighting device such as an LED, or may be configured to notify by voice. There may be a combination thereof.
  • reporting part 51 can be comprised with a display display part, a lighting device, a speaker, etc., for example.
  • FIG. 3 is an explanatory diagram of the control device of the refrigeration cycle apparatus 100 according to the present embodiment.
  • FIG. 4A is an explanatory diagram of a histogram when the refrigerating machine oil is deteriorated.
  • FIG. 4B is an explanatory diagram of a histogram when the compressor 1 is damaged.
  • the control device 50 includes a histogram creation unit 50A, a determination unit 50B, a notification control unit 50C, an actuator control unit 50D, a gradation range setting unit 50E, and a brightness setting unit 50F.
  • the histogram creation unit 50A creates a histogram for each of red light, green light, and blue light detected by the light detection sensor 22 (see FIGS. 4A and 4B).
  • the horizontal axis represents luminance gradation
  • the vertical axis represents pixel frequency. Note that in this embodiment, the gradation of luminance is 256 gradations.
  • the determination unit 50B has a function of determining whether or not the refrigerating machine oil in the refrigerant circuit C has deteriorated based on the detection result of the light detection sensor 22. This determination of deterioration of the refrigeration oil is also referred to as a third determination. When all the following conditions (1) to (3) are satisfied, the determination unit 50B determines that the color of the refrigerating machine oil has changed to brown and has deteriorated. (1) Regarding the first histogram of red light created by the histogram creation unit 50A, the determination unit 50B has a peak pixel frequency in the first gradation range.
  • the determination unit 50B With respect to the second histogram of green light created by the histogram creation unit 50A, the determination unit 50B has a peak pixel frequency in the second gradation range. (3) Regarding the third histogram of blue light created by the histogram creation unit 50A, the determination unit 50B has the peak pixel frequency in the third gradation range.
  • the control device 50 is set with a first gradation range, a second gradation range, and a third gradation range in order to spread the deterioration determination.
  • the first gradation range can be set to a range of about plus or minus 10 with the gradation value 128 as the center, for example. That is, the first gradation range can be set to a range from 108 to 138.
  • the second gradation range can be set to a range from 0 to 10, for example.
  • the third gradation range can be set to a range of 0 to 10, for example. The extent to which the first gradation range, the second gradation range, and the third gradation range are expanded can be set as appropriate.
  • the first gradation range, the second gradation range, and the third gradation range may be determined in advance, for example, or may be set by a service person or the like. In this embodiment, the first gradation range, the second gradation range, and the third gradation range can be set.
  • the determination unit 50 ⁇ / b> B has a function of determining whether or not the compressor 1 is damaged based on the detection result of the light detection sensor 22. Note that this damage determination of the compressor 1 is also referred to as a second determination.
  • the determination means has the same procedure as described above. As shown in FIG. 4A, typically, the gradation value of the first histogram when the color of the refrigerating machine oil is black is 0, the gradation value of the second histogram is 0, The gradation value of the histogram of 3 is 0. Note that the first gradation range can be set to a range of 0 to 10, for example. The second gradation range can be set to a range from 0 to 10, for example.
  • the third gradation range can be set to a range of 0 to 10, for example. Even in the case of black color determination, it is possible to appropriately set how much the first gradation range, the second gradation range, and the third gradation range are expanded.
  • the determination unit 50 ⁇ / b> B also has a function of determining whether at least one of the light emitting unit 21 side and the light detection sensor 22 side is dirty based on the detection result of the light detection sensor 22. This stain determination is also referred to as a first determination.
  • dirt may adhere to the light emitting part of the light emitting unit 21, the light receiving part of the light detection sensor 22, the light transmitting member 2C, and the light transmitting member 2D due to deterioration over time. If the dirt adheres to these, the accuracy of the above-described determination of deterioration of the refrigerating machine oil and the like is lowered, so that the control device 50 performs the dirt judgment in order to avoid the accuracy reduction.
  • the actuator control unit 50D increases the brightness of the light emitting unit 21 compared to when determining whether or not the refrigerating machine oil in the refrigerant circuit C is deteriorated or whether or not the compressor 1 is damaged. .
  • the actuator control unit 50D may set the light emitting unit 21 to the maximum brightness.
  • the gradation values of the first histogram, the second histogram, and the third histogram in white light are all 255.
  • the gradation of the histogram created by the histogram creation unit 50A is 255 for all of red, green, and blue.
  • the determination unit 50B determines that the peak of the red histogram enters the first gradation range based on the detection result of the light detection sensor 22, and the green color It is determined whether or not the histogram peak falls within the second gradation range and the blue histogram peak falls within the third gradation range.
  • the first gradation range can be set to a range of 0 to 245, for example.
  • the second gradation range can be set to a range from 0 to 245, for example.
  • the third gradation range can be set to a range from 0 to 245, for example.
  • the notification control unit 50C 51 has a function of notifying that effect. That is, when it determines with the refrigerating machine oil in the refrigerant circuit C having deteriorated, the alerting
  • the notification control unit 50C causes the notification unit 51 to perform notification to that effect (first notification).
  • the second notification is a notification indicating that the refrigeration oil has deteriorated
  • the first notification is a notification indicating that the compressor 1 is damaged.
  • the actuator controller 50D determines the rotation speed of the compressor 1, the opening degree of the expansion device 4, the rotation speed of the condenser fan 3A, the rotation speed of the evaporator fan 5A, and the brightness of the light emitting section 21 based on various data. Control.
  • the actuator control unit 50D has a function of stopping the operation of the compressor 1 when the determination unit 50B determines that the compressor 1 is damaged.
  • the gradation range setting unit 50E has a function of setting the first gradation range, the second gradation range, and the third gradation range that are used for determining the deterioration of the refrigerating machine oil. Further, the gradation range setting unit 50E has a function of setting the first gradation range, the second gradation range, and the third gradation range that are used for determining damage to the compressor 1.
  • the gradation range setting unit 50E includes, for example, an input unit such as a button or a touch panel provided on a remote controller or the like.
  • the brightness setting unit 50F sets the brightness of the light emitting unit 21 in each of the first determination, the second determination, and the third determination described above.
  • the brightness setting unit 50F sets the brightness of the light emitting unit 21 at the time of the first determination as the first brightness, and sets the brightness of the light emitting unit 21 at the time of the second determination and the third determination as the second brightness.
  • the first brightness is set to be larger than the second brightness.
  • FIG. 5 is an example of a flowchart of the refrigeration cycle apparatus 100 according to the present embodiment.
  • the control device 50 sets the brightness of the light emitting unit 21 to the first brightness (step S1).
  • the determination unit 50B of the control device 50 performs the first determination (step S2). If it is determined that the light transmitting member 2C or the like is not dirty, the brightness of the light emitting unit 21 is set to the second brightness (step S3). If the control device 50 determines that the light transmitting member 2C and the like are dirty, it notifies that fact (step S2-1). Thereafter, since the accuracy of the second determination and the third determination is lowered, the control device 50 ends the flow without performing the second determination and the third determination (step S6). Moreover, the determination part 50B of the control apparatus 50 performs 2nd determination after step S3 (step S4).
  • step S4 the first notification is made to notify the damage of the compressor 1 (step S4-1). Note that when the compressor 1 is informed of damage, it is difficult to determine deterioration of the refrigerating machine oil because the color of the refrigerating machine oil is black. For this reason, after notifying the damage of the compressor 1, the flow is finished without determining the deterioration of the refrigerating machine oil in step S5 (step S6). If it is determined that the compressor 1 is not damaged, the third determination is continued (step S5). If it is determined that the refrigerating machine oil has deteriorated, a second notification is made to notify the deterioration of the refrigerating machine oil (step S5-1). If it is determined that the refrigerating machine oil has not deteriorated, the flow is terminated (step S6).
  • the black color used for the damage determination by the compressor 1 is darker than the brown color used for the deterioration determination of the refrigerating machine oil, so it is difficult to determine the deterioration of the refrigerating machine oil when the compressor 1 is damaged. Therefore, if the order of determination in steps S4 and S5 is reversed, the compressor 1 is damaged and becomes black, but the refrigeration oil that cannot be determined is deteriorated. In order to avoid this, it is preferable to first determine whether the compressor 1 is damaged (second determination) and then perform a deterioration determination (third determination) of the refrigerating machine oil.
  • step S4 and step S5 may be interchanged.
  • the first gradation range when black is not overlapped with the first gradation range when brown. Therefore, it can be avoided that the deterioration of the refrigerating machine oil is determined in the second determination or the damage of the compressor 1 is determined in the third determination.
  • the control apparatus 50 may memorize
  • the initial value is an initial value of each peak of each histogram. For example, assume that the initial value of the gradation value of the first histogram is 250, the initial value of the gradation value of the second histogram is 240, and the initial value of the gradation value of the third histogram is 230.
  • the storage unit of the control device 50 stores these initial values. Then, the determination unit 50B may determine that the refrigerating machine oil in the refrigerant circuit C is deteriorated or the compressor 1 is damaged based on the deviation amount from the initial value. Note that the amount of red peak shift may be set larger when the compressor 1 is damaged than when the refrigeration oil in the refrigerant circuit C is deteriorated. Note that the green peak shift amount and the blue peak shift amount may be set the same when the refrigerating machine oil in the refrigerant circuit C is deteriorated and when the compressor 1 is damaged.
  • control device 50 determines whether or not the refrigerating machine oil in the refrigerant circuit C has deteriorated due to a decrease in the amount of light detected by the light detection sensor 22, and whether or not the compressor 1 is damaged. Such a determination may be made.
  • the light emitting unit 21 is not limited to the configuration that emits white light
  • the light detection sensor 22 is not limited to the RGB sensor. This is because the determination is based on the amount of decrease in the amount of light.
  • FIG. 6 is an explanatory diagram of the accumulator of Modification 1 of the refrigeration cycle apparatus according to the present embodiment.
  • the accumulator 6 is provided with the light emitting unit 21 and the light detection sensor 22, and the light transmitting member 6 ⁇ / b> C and the light transmitting member 6 ⁇ / b> D.
  • the accumulator 6 includes a container 6A in which a space for storing the gas refrigerant G, the liquid refrigerant L, and the refrigerating machine oil Oi is formed, a refrigerant inflow portion 6B1 connected to the container 6A, and a refrigerant outflow portion 6B2 connected to the container 6A. , A light transmitting member 6C, and a light transmitting member 6D disposed at a position opposite to the light transmitting member 6C.
  • Container 6A includes a cylindrical side surface portion, a bottom portion connected to the lower end of the side surface portion, and a top surface portion (upper surface portion) connected to the upper end of the side surface portion.
  • the refrigerant inflow portion 6B1 and the refrigerant outflow portion 6B2 are connected to the top surface portion of the container 6A.
  • the light transmissive member 6C and the light transmissive member 6D are disposed below the container 6A in the vertical direction of the container 6A. This is because in this embodiment, the refrigeration oil is heavier than the liquid refrigerant, so that the refrigeration oil is stored under the liquid refrigerant. If the refrigeration oil is lighter than the liquid refrigerant, the positions of the light transmitting member 6C and the light transmitting member 6D may be changed upward.
  • the configurations of the light transmitting member 6C and the light transmitting member 6D are the same as those of the light transmitting member 2C and the light transmitting member 2D.
  • the light emitting unit 21, the light transmitting member 6C, the light transmitting member 6D, and the light detection sensor 22 are arranged linearly in this order.
  • FIG. 7A is an explanatory diagram of a refrigerant circuit of Modification 2 of the refrigeration cycle apparatus 102 according to the present embodiment.
  • FIG. 7B is an explanatory diagram of an oil storage unit of Modification 2 of the refrigeration cycle apparatus 102 according to the present embodiment.
  • the oil storage unit 8 is provided with the light emitting unit 21 and the light detection sensor 22, and the light transmitting member 8C and the light transmitting member 8D.
  • the refrigeration cycle apparatus 102 according to Modification 2 includes a branch circuit C2 connected to the oil return circuit C1.
  • Branch circuit C ⁇ b> 2 includes a first pipe P ⁇ b> 9, a second pipe P ⁇ b> 10, and an oil storage unit 8.
  • One end of the first pipe P9 is connected to the first portion Po1 on the downstream side of the expansion device 7 (capillary tube) in the oil return circuit C1.
  • One end of the second pipe P10 is connected to the second part Po2 on the downstream side of the first part Po1 in the oil return circuit C1.
  • the other end of the first pipe P9 is disposed in the container 8A, and an opening for supplying refrigerating machine oil into the container 8A is formed.
  • the other end of the second pipe P10 is disposed in the container 8A, and an opening for discharging the refrigerating machine oil out of the container 8A is formed.
  • the oil reservoir 8 includes a container 8A in which a space for storing the refrigerating machine oil Oi is formed, an oil inlet 8B1 connected to the container 8A, an oil outlet 8B2 connected to the container 8A, and a light transmitting member 8C.
  • a light transmissive member 8E disposed at a position opposite to the light transmissive member 8C.
  • the container 8A includes a cylindrical side surface portion, a bottom portion connected to the lower end of the side surface portion, and a top surface portion (upper surface portion) connected to the upper end of the side surface portion.
  • the oil inflow portion 8B1 is connected to the top surface portion of the container 8A, and the oil outflow portion 8B2 is connected to the bottom portion of the container 8A.
  • an opening serving as an outlet for the refrigerating machine oil is formed at the upper end (other end) of the oil outflow portion 8B2.
  • the oil reservoir 8 is arranged such that the upper end of the oil outlet 8B2 is spaced a predetermined distance L1 from the bottom of the container 6A so that the refrigerating machine oil Oi can easily accumulate in the container 8A.
  • the light transmissive member 8C and the light transmissive member 8D are disposed below the upper end of the oil outflow portion 8B2 in the vertical direction of the container 8A. As a result, light passes through the portion where the refrigerating machine oil Oi is stored, and the determination accuracy such as deterioration of the refrigerating machine oil Oi can be improved.
  • the configurations of the light transmitting member 8C and the light transmitting member 8D are the same as those of the light transmitting member 2C and the light transmitting member 2D.
  • the light emitting unit 21, the light transmissive member 8C, the light transmissive member 8D, and the light detection sensor 22 are linearly arranged in this order.
  • FIG. 8 is an explanatory diagram of Modification 3 of the refrigeration cycle apparatus according to the present embodiment.
  • the light emitting unit 21 and the light detection sensor 22 are provided in the refrigerant pipe P5, and the light transmitting member PC and the light transmitting member PD are provided.
  • the refrigerant pipe P5 is a pipe that connects the evaporator 5 and the compressor 1 via the accumulator 6 and the refrigerant pipe P6.
  • refrigeration oil is heavier than a refrigerant
  • the light emitting unit 21 is disposed in one of the upper part and the lower part of a part of the refrigerant pipe P5, and the light detection sensor 22 is a part of the refrigerant pipe P5 so as to face the light emitting part 21. It is arrange
  • a part of the refrigerant pipe P5 indicates a part between one end and the other end of the refrigerant pipe P5.
  • the light emission part 21 is arrange
  • the configurations of the light transmitting member PC and the light transmitting member PD are the same as those of the light transmitting member 2C and the light transmitting member 2D.
  • the light emitting unit 21, the light transmissive member PC, the light transmissive member PD, and the light detection sensor 22 are arranged linearly in this order.
  • the determination unit 50B of the control device 50 determines whether or not the refrigerating machine oil in the refrigerant pipe P5 (refrigerant circuit C) has deteriorated based on the detection result of the light detection sensor 22 when the compressor 1 is stopped. Alternatively, it may be determined whether or not the compressor 1 is damaged. This is because when the compressor 1 is operating, it is assumed that the refrigeration oil flows into the refrigerant and does not stay in the lower part of the refrigerant pipe P5. That is, by adopting this configuration, the compressor 1 is stopped, and the refrigerating machine oil that has flowed down to the lower portion of the refrigerant pipe P5 due to the action of gravity can be detected by the light detection sensor 22, and stays in the refrigerant pipe P5. The determination regarding the color of refrigerating machine oil can be performed accurately.
  • this modification 3 while providing the light emission part 21 and the light detection sensor 22 in the refrigerant
  • the light emitting unit 21, the light detection sensor 22, the light transmission member PC, and the light transmission member PD may be provided in the refrigerant pipe P6.
  • the light emitting unit 21 and the light detection sensor 22 may be provided in a portion on the downstream side of the expansion device 7 (capillary tube) in the oil return circuit C1. That is, the light emitting unit 21, the light detection sensor 22, the light transmission member PC, and the light transmission member PD may be provided in the refrigerant pipe P8.
  • FIG. 9 is an explanatory diagram of Modification 4 of the refrigeration cycle apparatus according to the present embodiment.
  • the compressor 1 is provided with the light emitting unit 21 and the light detection sensor 22, and the light transmitting member 1 ⁇ / b> C and the light transmitting member 1 ⁇ / b> D are provided.
  • the compressor 1 is a scroll compressor will be described as an example.
  • the compressor 1 includes a sealed container 1A constituting an outer shell, a suction pipe 1B1 that guides the refrigerant to the sealed container 1A, a discharge pipe 1B2 that discharges the compressed refrigerant, and a subframe 1F that partitions a space in the sealed container 1A.
  • the compressor 1 includes an orbiting scroll 1H formed with a spiral body used for compressing the refrigerant, a frame 1J that accommodates the orbiting scroll 1H, an axis SF that rotates the orbiting scroll 1H, An electric motor 1E that rotates the shaft SF and an Oldham ring 1I that swings the swing scroll 1H are included.
  • a fixed scroll 1G, an orbiting scroll 1H, a frame 1J, a shaft SF, an electric motor 1E, an Oldham ring 1I, and the like are provided in the sealed container 1A.
  • a suction pipe 1B1 communicating with the inside of the sealed container 1A is connected to the side surface of the sealed container 1A.
  • a discharge pipe 1B2 through which refrigerant compressed by the fixed scroll 1G and the swing scroll 1H is discharged is connected to the upper part of the sealed container 1A.
  • the suction pipe 1B1 is a pipe for guiding the refrigerant flowing into the compressor 1 into the sealed container 1A, and is connected to the refrigerant pipe P6.
  • the suction pipe 1B1 is provided on the side surface of the sealed container 1A.
  • the discharge pipe 1B2 is a pipe for discharging the refrigerant compressed by the compressor 1, and is connected to the refrigerant pipe P1.
  • the sub-frame 1F is provided so as to partition the space in the sealed container 1A, and a sub-bearing 1F1 that rotatably supports the lower end side of the shaft SF is provided.
  • a bottom oil reservoir 1L is provided below the subframe 1F, and an electric motor 1E is provided above the subframe 1F.
  • the bottom oil reservoir 1L stores the refrigeration oil Oi.
  • the bottom oil reservoir 1L is provided on the lower side of the subframe 1F.
  • the refrigerating machine oil Oi stored in the bottom oil reservoir 1L is pulled up to the swing scroll 1H side by an oil pump provided at the lower end of the shaft SF.
  • the fixed scroll 1G compresses the refrigerant together with the swing scroll 1H.
  • the fixed scroll 1G is disposed to face the orbiting scroll 1H.
  • the discharge valve 1K that releases the pressure of the compression chamber formed by the fixed scroll 1G and the swing scroll 1H. Is provided.
  • the frame 1J accommodates the orbiting scroll 1H so that the orbiting scroll 1H can slide freely.
  • the axis SF transmits driving force to the orbiting scroll 1H.
  • the electric motor 1E rotates the shaft SF.
  • the electric motor 1E includes a stator 1E1 fixedly supported by the hermetic container 1A and a rotor 1E2 that generates torque by being combined with the stator 1E1.
  • the electric motor 1E is provided so as to partition an upper space in which the swing scroll 1H, the fixed scroll 1G, and the like are provided, and a lower space in which the bottom oil reservoir 1L is provided.
  • the stator 1E1 is configured, for example, by mounting a multi-phase winding on a laminated iron core.
  • the rotor 1E2 has, for example, a permanent magnet (not shown) inside, and is supported by the shaft SF so that a preset air gap is formed between the rotor 1E2 and the inner peripheral surface of the stator 1E1.
  • the rotor 1E2 is rotationally driven when the stator 1E1 is energized to rotate the shaft SF.
  • the Oldham ring 1I is used to prevent the rotation motion during the swing motion of the swing scroll 1H.
  • the light transmitting member 1C and the light transmitting member 1D are provided at the formation position of the bottom oil reservoir 1L in the sealed container 1A.
  • the configurations of the light transmitting member 1C and the light transmitting member 1D are the same as those of the light transmitting member 2C and the light transmitting member 2D.
  • the axis SF oil pump
  • the axis SF is not positioned on a straight line connecting the light emitting unit 21, the light transmitting member 1C, the light transmitting member 1D, and the light detection sensor 22. This is to avoid that the light from the light emitting unit 21 is blocked by the axis SF and the light detection sensor 22 cannot receive the light.
  • the axis SF may be arranged at a position where a predetermined distance in the horizontal direction is shifted from a straight line connecting the light emitting unit 21, the light transmitting member 1 ⁇ / b> C, the light transmitting member 1 ⁇ / b> D, and the light detection sensor 22.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)

Abstract

Cet appareil à cycle de réfrigération comprend : un circuit de fluide frigorigène qui est pourvu d'un compresseur, d'un condenseur, d'un dispositif à diaphragme et d'un évaporateur; une unité d'émission de lumière qui émet de la lumière et qui est disposée sur un passage d'écoulement conduisant à l'évaporateur, au compresseur et au condenseur dans le circuit de fluide frigorigène; un capteur de photodétection qui détecte la lumière provenant de l'unité d'émission de lumière et qui est disposé conjointement avec l'unité d'émission de lumière; un dispositif de commande qui détermine si l'huile de congélateur dans le circuit de fluide frigorigène a été dégradée ou si le compresseur a été endommagé, sur la base du résultat de détection du capteur de photodétection; et une unité de notification qui notifie si l'huile de congélateur dans le circuit de fluide frigorigène a été dégradée ou si le compresseur a été endommagé.
PCT/JP2016/075219 2016-08-29 2016-08-29 Appareil à cycle de réfrigération WO2018042495A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2018536537A JP6641490B2 (ja) 2016-08-29 2016-08-29 冷凍サイクル装置
PCT/JP2016/075219 WO2018042495A1 (fr) 2016-08-29 2016-08-29 Appareil à cycle de réfrigération

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2016/075219 WO2018042495A1 (fr) 2016-08-29 2016-08-29 Appareil à cycle de réfrigération

Publications (1)

Publication Number Publication Date
WO2018042495A1 true WO2018042495A1 (fr) 2018-03-08

Family

ID=61300278

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2016/075219 WO2018042495A1 (fr) 2016-08-29 2016-08-29 Appareil à cycle de réfrigération

Country Status (2)

Country Link
JP (1) JP6641490B2 (fr)
WO (1) WO2018042495A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019214957A (ja) * 2018-06-12 2019-12-19 大阪瓦斯株式会社 圧縮機の故障予測装置
CN110657609A (zh) * 2018-06-29 2020-01-07 日立江森自控空调有限公司 冷冻机油劣化判定系统、水分混入判定系统、制冷循环装置以及水分残留检查方法
WO2024084586A1 (fr) * 2022-10-18 2024-04-25 三菱電機株式会社 Système de climatisation et dispositif de climatisation

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63279177A (ja) * 1987-05-11 1988-11-16 Minolta Camera Co Ltd 光センサ−のチェック装置
JPH09152202A (ja) * 1995-12-01 1997-06-10 Matsushita Refrig Co Ltd 空気調和機
JP2001227846A (ja) * 2000-02-14 2001-08-24 Daikin Ind Ltd 冷凍装置および磨耗粉判断装置および冷媒酸化判断装置
JP2001305128A (ja) * 2000-04-21 2001-10-31 Matsushita Refrig Co Ltd 潤滑油の劣化検出方法および検出手段および冷凍システム
WO2013191273A1 (fr) * 2012-06-22 2013-12-27 ナブテスコ株式会社 Procédé de détermination d'état, système de notification d'état et programme de détermination d'état
JP2015049166A (ja) * 2013-09-03 2015-03-16 株式会社Ihi 潤滑油劣化判定装置、潤滑油劣化判定方法、および、プログラム

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63279177A (ja) * 1987-05-11 1988-11-16 Minolta Camera Co Ltd 光センサ−のチェック装置
JPH09152202A (ja) * 1995-12-01 1997-06-10 Matsushita Refrig Co Ltd 空気調和機
JP2001227846A (ja) * 2000-02-14 2001-08-24 Daikin Ind Ltd 冷凍装置および磨耗粉判断装置および冷媒酸化判断装置
JP2001305128A (ja) * 2000-04-21 2001-10-31 Matsushita Refrig Co Ltd 潤滑油の劣化検出方法および検出手段および冷凍システム
WO2013191273A1 (fr) * 2012-06-22 2013-12-27 ナブテスコ株式会社 Procédé de détermination d'état, système de notification d'état et programme de détermination d'état
JP2015049166A (ja) * 2013-09-03 2015-03-16 株式会社Ihi 潤滑油劣化判定装置、潤滑油劣化判定方法、および、プログラム

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019214957A (ja) * 2018-06-12 2019-12-19 大阪瓦斯株式会社 圧縮機の故障予測装置
JP7030623B2 (ja) 2018-06-12 2022-03-07 大阪瓦斯株式会社 圧縮機の故障予測装置
CN110657609A (zh) * 2018-06-29 2020-01-07 日立江森自控空调有限公司 冷冻机油劣化判定系统、水分混入判定系统、制冷循环装置以及水分残留检查方法
JP2020003166A (ja) * 2018-06-29 2020-01-09 日立ジョンソンコントロールズ空調株式会社 冷凍機油劣化判定システム、水分混入判定システム、冷凍サイクル装置及び水分残存検査方法
CN110657609B (zh) * 2018-06-29 2021-07-27 日立江森自控空调有限公司 冷冻机油劣化判定系统、水分混入判定系统、制冷循环装置以及水分残留检查方法
WO2024084586A1 (fr) * 2022-10-18 2024-04-25 三菱電機株式会社 Système de climatisation et dispositif de climatisation

Also Published As

Publication number Publication date
JPWO2018042495A1 (ja) 2019-04-04
JP6641490B2 (ja) 2020-02-05

Similar Documents

Publication Publication Date Title
WO2018042495A1 (fr) Appareil à cycle de réfrigération
CN107429949B (zh) 制冷循环装置
JP6083173B2 (ja) 空気調和装置及びそれに用いられる圧縮機
JP2017053285A (ja) 圧縮機
WO2015025514A1 (fr) Dispositif de réfrigération
WO2019244659A1 (fr) Dispositif frigorifique
JP2011038699A (ja) 空気調和機
EP1826512A2 (fr) Système et méthode pour le recyclage de l'huile d'un climatiseur
JP2015114067A (ja) 空気調和機
JP2017210898A (ja) スクロール圧縮機
US10851787B2 (en) Compressor bearing housing drain
JP4203292B2 (ja) 空気圧縮機
JP6255832B2 (ja) 空気調和機
CN114585868B (zh) 冷冻装置
JP2008133968A (ja) 冷凍サイクル装置
JP2004036487A (ja) 空気圧縮機
JP2009108747A (ja) 密閉型電動圧縮機
JP4276528B2 (ja) 圧縮機
JP4166022B2 (ja) 空気圧縮機
JP2009008093A (ja) 空気圧縮機
JP2013238191A (ja) 圧縮機
JP2009097460A (ja) 回転式電動圧縮機
JP5452580B2 (ja) 空気圧縮機
JP2004205175A (ja) 冷凍装置
JP6751597B2 (ja) 容積型圧縮機、給湯器、及び空気調和機

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16915056

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2018536537

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16915056

Country of ref document: EP

Kind code of ref document: A1