WO2018176283A1 - Climatiseur - Google Patents

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Publication number
WO2018176283A1
WO2018176283A1 PCT/CN2017/078651 CN2017078651W WO2018176283A1 WO 2018176283 A1 WO2018176283 A1 WO 2018176283A1 CN 2017078651 W CN2017078651 W CN 2017078651W WO 2018176283 A1 WO2018176283 A1 WO 2018176283A1
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WO
WIPO (PCT)
Prior art keywords
capillary
air conditioner
valve port
tube
refrigerant
Prior art date
Application number
PCT/CN2017/078651
Other languages
English (en)
Chinese (zh)
Inventor
杨俊�
雷华翘
Original Assignee
广东美的制冷设备有限公司
美的集团股份有限公司
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 广东美的制冷设备有限公司, 美的集团股份有限公司 filed Critical 广东美的制冷设备有限公司
Priority to PCT/CN2017/078651 priority Critical patent/WO2018176283A1/fr
Publication of WO2018176283A1 publication Critical patent/WO2018176283A1/fr

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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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/39—Dispositions with two or more expansion means arranged in series, i.e. multi-stage expansion, on a refrigerant line leading to the same evaporator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station

Definitions

  • the invention relates to the field of heat exchange technology, and in particular to an air conditioner.
  • Air conditioners using R290 as a refrigerant are limited by the amount of charge, and the total capacity of the same section is much smaller than that of air conditioners using other refrigerants.
  • air conditioners In order to meet the cooling capacity and energy efficiency requirements, such air conditioners must use large displacement compressors and large-area heat exchangers.
  • the present invention aims to solve at least one of the technical problems existing in the prior art.
  • the present invention proposes an air conditioner that can prevent the first capillary and the second capillary of the capillary assembly from being clogged, improve the reliability of use of the air conditioner, and reduce the failure rate of the air conditioner.
  • the air conditioner uses R290 as a refrigerant
  • the air conditioner includes: a compressor having an exhaust port and a return air port; a reversing assembly having the reversing assembly a first valve port to a fourth valve port, the first valve port being in communication with one of the second valve port and the third valve port, the fourth valve port and the second valve port and the third valve port The other one of the valve ports is in communication, the first valve port is connected to the exhaust port, the fourth valve port is connected to the air return port; the indoor heat exchanger, the first end of the indoor heat exchanger Connected to the third valve port; an outdoor heat exchanger, the first end of the outdoor heat exchanger is connected to the second valve port; and the capillary assembly includes a first capillary tube, a second capillary tube and a transition a first end of the first capillary is connected to a second end of the indoor heat exchanger, and a first end of the second capillary is connected to a second end of
  • An air conditioner by causing a capillary assembly to include a first capillary, a second capillary, and a transition tube while making an inner diameter of the transition tube larger than an inner diameter of the first capillary and the second capillary, and making the length of the first capillary not It is smaller than the length of the second capillary tube, so that when the air conditioner defrosting mode ends and is turned into the heating mode, after the refrigerant flows out from the indoor heat exchanger, it is beneficial to ensure that the oil temperature of the lubricating oil in the refrigerant is higher than the pour point thereof.
  • the temperature can avoid the blockage of the first capillary tube and the second capillary tube, reduce the failure rate of the air conditioner, improve the reliability of the use of the air conditioner, and prolong the service life of the air conditioner.
  • the length of the first capillary is greater than the length of the second capillary.
  • the length of the first capillary is L, L satisfies: L ⁇ 700 mm.
  • the transition duct is horizontally disposed.
  • the inner diameter of the transition tube is d1
  • the inner diameter of the first capillary tube and the second capillary tube is d2
  • the d1 and the d2 satisfy: d1 ⁇ 4 mm, d2 ⁇ 2.1 mm .
  • the first capillary, the transition tube and the second capillary are in one piece.
  • the transition tube is a copper tube.
  • the reversing component is a four-way valve.
  • the air conditioner further includes a reservoir, the reservoir being connected in series between the air return port and the fourth valve port.
  • FIG. 1 is a schematic view of an air conditioner in accordance with some embodiments of the present invention.
  • FIG. 2 is a schematic view of an air conditioner in accordance with further embodiments of the present invention.
  • Air conditioner 100
  • Compressor 1 housing 11; exhaust port A; return port B; oil pool 12;
  • Reversing assembly 2 first valve port C; second valve port D; third valve port E; fourth valve port F;
  • Capillary assembly 6 first capillary 61; transition tube 62; second capillary 63.
  • connection and “connected” are to be understood broadly, and may be, for example, a fixed connection, a detachable connection, or an integral, unless otherwise explicitly defined and defined.
  • Ground connection it can be mechanical connection or electrical connection; it can be directly connected or indirectly connected through an intermediate medium, which can be the internal connection of two components.
  • intermediate medium which can be the internal connection of two components.
  • the air conditioner 100 may use R290 as a refrigerant, and the air conditioner 100 may be used to adjust an indoor temperature, for example, the air conditioner 100 may be used to heat an indoor environment. Or cooling.
  • the air conditioner 100 may be a heat pump air conditioner, for example, the air conditioner 100 is a heat pump inverter air conditioner.
  • an air conditioner 100 may include a compressor 1, a reversing assembly 2, an indoor heat exchanger 3, an outdoor heat exchanger 4, and a capillary assembly 6.
  • the compressor 1 includes a housing 11 and a compression mechanism (not shown).
  • the compression mechanism includes a main bearing, a sub-bearing, a crankshaft, a cylinder, and the like, and the compression mechanism is disposed in the housing 1.
  • the casing 11 has an oil pool 12 therein.
  • the oil pool 12 has lubricating oil. When the compression mechanism is in operation, the lubricating oil can lubricate the compression mechanism, thereby improving the reliability of the compression mechanism.
  • compressor 1 is a low back pressure compressor.
  • the casing 11 has an exhaust port A and a return air port B, and the heat-exchanged refrigerant can be returned to the compressor through the air return port B, and the refrigerant can be discharged from the exhaust port A after being compressed by the cylinder of the compressor 1.
  • the refrigerant herein refers to A refrigerant mixed with a small amount of lubricating oil.
  • the reversing assembly 2 has a first valve port C to a fourth valve port F, wherein the first valve port C is in communication with one of the second valve port D and the third valve port E, and the fourth valve port F and the The other of the two valve ports D and the third valve port E is in communication communication.
  • the fourth valve port F communicates with the third valve port E
  • the fourth valve port F It is in communication with the second valve port D.
  • the first port C is connected to the exhaust port A, and the fourth port F is connected to the return port B, thereby connecting the reversing unit 2 to the refrigerant circuit of the air conditioner 100 to facilitate the circulation of the refrigerant.
  • the reversing assembly 2 is a four-way valve.
  • the first valve port C is in communication with the second valve port D
  • the fourth valve port F is in communication with the third valve port E.
  • the first valve port C is in communication with the third valve port E
  • the fourth valve port F is in communication with the second valve port D.
  • the specific structure and working principle of the four-way valve are well known to those skilled in the art and will not be described in detail herein.
  • the reversing assembly 2 can also be formed as other components as long as it has the first to fourth valve ports C to F and can be reversed.
  • the fourth valve port F and the second valve port D and the third valve port E are Another commutation communication is implemented to achieve commutation, which allows the air conditioner 100 to switch between the cooling mode and the heating mode, thereby realizing the cooling function and the heating function of the air conditioner 100.
  • the first end of the indoor heat exchanger 3 (for example, the left end shown in Figures 1 and 2) is connected to the third valve port E, the first end of the outdoor heat exchanger 4 (for example, shown in Figures 1 and 2)
  • the left end of the outlet is connected to the second valve port D, thereby connecting the indoor heat exchanger 3 and the outdoor heat exchanger 4 in the refrigerant flow path.
  • the capillary assembly 6 includes a first capillary 61, a second capillary 63, and a transition tube 62, a first end of the first capillary 61 (eg, the lower end shown in FIG. 2) and a second end of the indoor heat exchanger 3 (eg, The right end shown in Figure 2 is connected, the first end of the second capillary 63 (e.g., the upper end shown in Figure 2) and the second end of the outdoor heat exchanger 4 (e.g., the right end shown in Figure 2) Connected, the transition tube 62 is connected between the second end of the first capillary 61 (such as the upper end shown in FIG. 2) and the second end of the second capillary 63 (for example, the lower end shown in FIG. 2), first The capillary 61 and the second capillary 63 are capable of throttling and depressurizing the refrigerant flowing therethrough.
  • the first port C of the reversing assembly 2 is in communication with the second port D, and the third port E is The fourth valve port F is connected, and the high temperature and high pressure refrigerant compressed by the compressor 1 can flow through the exhaust port A to the first valve port C of the reversing assembly 2, and then the refrigerant passes through the second valve port of the reversing assembly 2.
  • D enters the outdoor heat exchanger 4 and exchanges energy with the external environment in the outdoor heat exchanger 4, and the refrigerant flowing out of the outdoor heat exchanger 4 sequentially flows through the second capillary 63, the transition tube 62, and the first capillary.
  • the indoor heat exchanger 3 After entering 61, the indoor heat exchanger 3 is introduced to absorb the heat in the room, and the ambient temperature in the room is lowered.
  • the refrigerant flowing out of the indoor heat exchanger 3 passes through the third valve port E and the fourth valve port F, and passes through the compressor 1
  • the return port B returns to the compressor 1 to form a system Cold cycle, so as to reciprocate.
  • the first valve port C of the reversing assembly 2 is in communication with the third valve port E and the fourth valve port F is in communication with the second valve port D.
  • the high-temperature high-pressure refrigerant compressed by the cylinder of the compressor 1 is discharged from the exhaust port A, then flows through the first port C and the third port E to the indoor heat exchanger 3, and is in the indoor heat exchanger 3
  • the medium and the indoor environment exchange heat, and the refrigerant after heat exchange with the indoor heat exchanger 3 sequentially flows through the first capillary 61, the transition tube 62 and the second capillary 63, and then enters the outdoor heat exchanger 4, and the refrigerant is exchanged outdoors.
  • the heat exchanger 4 exchanges heat with the outdoor environment, and the refrigerant exchanged with the outdoor heat exchanger 4 flows through the second valve port D and the fourth valve port F, and returns to the compressor through the return port B of the compressor 1. 1. In this way, the heating cycle of the air conditioner 100 is formed.
  • the inner diameter of the transition duct 62 is larger than the inner diameters of the first capillary 61 and the second capillary 63, that is, the inner diameter of the transition duct 62 is larger than the inner diameter of the first capillary 61 and the inner diameter of the transition duct 62 is larger than the inner diameter of the second capillary 63.
  • the inner diameters of the first capillary 61 and the second capillary 63 are the same, and the inner diameter of the transition tube 62 is larger than the inner diameters of the first capillary 61 and the second capillary 63.
  • the length of the first capillary 61 is not less than the length of the second capillary 63. That is, the length of the second capillary 63 is not greater than the length of the first capillary 61. For example, the length of the first capillary 61 is greater than the length of the second capillary 63. As another example, the length of the first capillary 61 is equal to the length of the second capillary 63.
  • An air conditioner replaces one capillary in the related art by using the capillary assembly 6, such that the lengths of the first capillary 61 and the second capillary 63 are both smaller than the length of the one capillary, thereby being 100 in the air conditioner
  • the frost mode is turned into the heating mode
  • the refrigerant flows from the first capillary 61 to the transition tube 62, which is advantageous for ensuring that the temperature of the refrigerant in the first capillary 61 is substantially constant, which is advantageous for ensuring refrigeration.
  • the agent enters the transition tube 62 before its temperature drops sharply, so that the temperature of the lubricating oil in the refrigerant is lower than the pour point temperature of the lubricating oil to a certain extent. A floc flow is produced.
  • the lubricating oil in the refrigerant generates a floc flow in the first capillary 61
  • the inner diameter of the transition tube 62 is larger than the first capillary 61 and the second The inner diameter of the capillary 63 is large, so that the floc flow can also flow into the transition tube 62 relatively easily and temporarily stored in the transition tube 62, and since the transition tube 62 does not have the effect of throttling and depressurizing the refrigerant or throttling
  • the effect of the pressure is small (for example, the transition tube 62 is a non-capillary tube), so the temperature of the refrigerant in the transition tube 62 is slightly increased, which helps the temperature of the lubricating oil in the transition tube 62 to rise, thereby making the temperature of the lubricating oil higher than At the pour point temperature, the refrigerant in the transition duct 62 also reduces the risk of the
  • the length of the second capillary 63 is not greater than the length of the first capillary 61, the length of the second capillary 63 can be shortened without affecting the throttling and depressurization of the refrigerant, which is advantageous in avoiding refrigerant
  • the lubricating oil generates a floc flow in the second capillary 63, thereby further preventing the second capillary 63 from being clogged.
  • the air conditioner 100 by making the capillary assembly 6 include the first capillary 61, the second capillary 63, and the transition tube 62 while making the inner diameter of the transition tube 62 larger than the first capillary 61 and the second
  • the inner diameter of the capillary 63 is such that the length of the first capillary 61 is not less than the length of the second capillary 63, so that after the defrosting mode of the air conditioner 100 ends to the heating mode, after the refrigerant flows out of the indoor heat exchanger 3, It is advantageous to ensure that the oil temperature of the lubricating oil in the refrigerant is higher than the pour point temperature, thereby preventing the first capillary 61 and the second capillary 63 from being clogged, reducing the failure rate of the air conditioner 100, and improving the reliability of the air conditioner 100. Extend the service life of the air conditioner 100.
  • the length of the first capillary 61 is greater than the length of the second capillary 63.
  • the length of the second capillary 63 is further limited, the flow distance of the refrigerant in the second capillary 63 is shortened, and the lubricating oil in the refrigerant occludes the second capillary when the defrosting mode of the air conditioner 100 is turned into the heating mode is further reduced. 63 risk.
  • the length L of the first capillary 61 can be limited to L ⁇ 700 mm. Can It is understood that when the length L of the first capillary 61 satisfies: L ⁇ 700 mm, the length of the second capillary 63 is also less than or equal to 700 mm and the length of the second capillary 63 is not greater than the length of the first capillary 61.
  • the length of the second capillary 63 may be 650 mm, 600 mm, or 620 mm or the like.
  • the length of the second capillary 63 may be 550 mm, 580 mm or 630 mm. Therefore, it is advantageous to further avoid a phenomenon in which the temperature of the refrigerant drops sharply in the first capillary 61 or the second capillary 63 when the defrosting mode of the air conditioner 100 ends to turn into the heating mode, thereby further preventing the lubricating oil from being formed into a floc flow. .
  • the transition duct 62 is horizontally disposed.
  • the flow velocity of the refrigerant in the transition duct 62 can be greatly reduced, thereby prolonging the circulation time of the refrigerant in the transition duct 62, which is advantageous for further lubrication of the lubricant in the transition duct 62.
  • the temperature is raised to prevent the flocc flow from clogging the second capillary 63 when the defrosting mode of the air conditioner 100 is turned to the heating mode.
  • the present invention is not limited thereto, and the transition duct 62 may also be disposed obliquely.
  • the angle between the extending direction of the transition duct 62 and the horizontal plane is ⁇ , and ⁇ satisfies: 0° ⁇ ⁇ ⁇ 90°, for example, ⁇ is 15 °, 20°, 30°, 60° or 45°.
  • the inner diameter of the transition duct 62 is d1
  • the inner diameters of the first capillary 61 and the second capillary 63 are d2
  • d1 and d2 satisfy: d1 ⁇ 4 mm, d2 ⁇ 2.1 mm.
  • the first capillary 61, the transition tube 62, and the second capillary 63 are a single piece. Thereby, not only the structure is simple, the production process for the capillary assembly 6 can be simplified, the production cost can be reduced, and the installation process of the capillary assembly 6 in the air conditioner 100 can be simplified.
  • the transition tube 62 is a copper tube. Therefore, it is beneficial to improve the heat exchange efficiency between the copper pipe and the surrounding environment. Thereby the risk of the oil temperature of the lubricating oil at the transition duct 62 being lower than the pour point temperature is further reduced.
  • the cylinder has an exhaust passage and an intake passage, and the intake passage is connected to the return port B.
  • the heat exchanged refrigerant can be returned from the return port B and the intake passage to the cylinder of the compressor 1, and the refrigerant is in the cylinder.
  • a high temperature and high pressure refrigerant can be formed, and the compressor 1 is discharged through the exhaust passage and the exhaust port A in sequence.
  • the air conditioner 100 further includes a heat exchange member 5, and two ends of the heat exchange member 5 are respectively connected to the exhaust port A and the exhaust passage, and the heat exchange member 5 is at least partially immersed in the lubricating oil in the oil pool 12. Therefore, the refrigerant compressed by the cylinder may first flow to the heat exchange member 5 after being discharged from the exhaust passage, and the refrigerant exchanges heat with the lubricating oil in the oil pool 12 in the heat exchange member 5 to heat the lubricating oil, and then The refrigerant discharges the compressor 1 from the exhaust port A.
  • the refrigerant discharged from the exhaust passage of the cylinder first flows through the heat exchange member 5, so that the refrigerant in the heat exchange member 5 can perform the lubricating oil in the oil pool 12. Heating, thereby increasing the oil temperature of the lubricating oil in the oil pool 12, so that when the defrosting mode of the air conditioner 100 ends and changes to the heating mode, the refrigerant flows out of the indoor heat exchanger 3 and flows through the capillary assembly 6
  • the capillary 61 and the second capillary 63 are used, it is further ensured that the oil temperature of the lubricating oil mixed in the refrigerant is not lower than the pour point temperature, so that the first capillary 61 and the second capillary 63 can be further prevented from being clogged, further reducing the air conditioner.
  • the failure rate of 100 improves the reliability of the use of the air conditioner 100 and prolongs the service life of the air conditioner 100.
  • the oil in the oil pool 12 is heated by the exhaust of the cylinder, thereby increasing the oil temperature of the lubricating oil, so that the defrosting mode of the air conditioner 100 is turned into the heating mode.
  • the refrigerant flows out of the indoor heat exchanger 3 and flows through the first capillary 61 and the second capillary 63, it is further ensured that the oil temperature of the lubricating oil mixed in the refrigerant is not lower than the pour point temperature, thereby further The first capillary 61 and the second capillary 63 are prevented from being clogged, the failure rate of the air conditioner 100 is further reduced, the reliability of the use of the air conditioner 100 is improved, and the service life of the air conditioner 100 is prolonged.
  • the heat exchange member 5 is a heat exchange tube, for example, the heat exchange member 5 is a coil tube, or a flat tube or the like.
  • the heat exchange member 5 can also be formed into other structures, for example, the heat exchange member 5 is a heat exchanger, as long as The heat exchange member 5 can flow a refrigerant and can realize heat exchange between the refrigerant and the lubricating oil.
  • the heat exchange tube is a copper tube, whereby the heat exchange tube has good thermal conductivity and high heat exchange efficiency.
  • the air conditioner 100 further includes a reservoir (not shown) that is connected in series between the return port B and the fourth port F.
  • a reservoir (not shown) that is connected in series between the return port B and the fourth port F.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Other Air-Conditioning Systems (AREA)

Abstract

L'invention concerne un climatiseur (100) comprenant: un compresseur (1); un composant de dérivation (2) ayant quatre orifices de soupape (C-F); un échangeur de chaleur intérieur (3) avec sa première extrémité reliée au troisième orifice de soupape (E); un échangeur de chaleur extérieur (4) avec sa première extrémité reliée au deuxième orifice de soupape (D); et un composant capillaire (6) comprenant un premier capillaire, un second capillaire (63) et un tube de transition (62). Une première extrémité du premier capillaire (61) est reliée à une seconde extrémité de l'échangeur de chaleur intérieur (3), une première extrémité du second capillaire (63) est reliée à une seconde extrémité de l'échangeur de chaleur extérieur (4), et le tube de transition (62) est connecté entre le premier capillaire (61) et le second capillaire (63).
PCT/CN2017/078651 2017-03-29 2017-03-29 Climatiseur WO2018176283A1 (fr)

Priority Applications (1)

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PCT/CN2017/078651 WO2018176283A1 (fr) 2017-03-29 2017-03-29 Climatiseur

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PCT/CN2017/078651 WO2018176283A1 (fr) 2017-03-29 2017-03-29 Climatiseur

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WO2018176283A1 true WO2018176283A1 (fr) 2018-10-04

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109607481A (zh) * 2019-01-08 2019-04-12 湖南有色郴州氟化学有限公司 用于氢氟酸生产工艺的反应炉炉尾紧急出口及反应炉
CN111435058A (zh) * 2019-01-11 2020-07-21 青岛海尔空调器有限总公司 芯片换热器及变频空调器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1972871A2 (fr) * 2007-03-19 2008-09-24 Mitsubishi Electric Corporation Système de fourniture d'eau chaude
CN102734869A (zh) * 2011-04-07 2012-10-17 Lg电子株式会社 空调
CN104154630A (zh) * 2014-07-22 2014-11-19 美的集团武汉制冷设备有限公司 空调系统的控制方法和控制装置
CN106918162A (zh) * 2017-03-29 2017-07-04 广东美的制冷设备有限公司 空调器
CN106958892A (zh) * 2017-03-29 2017-07-18 广东美的制冷设备有限公司 空调器

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1972871A2 (fr) * 2007-03-19 2008-09-24 Mitsubishi Electric Corporation Système de fourniture d'eau chaude
CN102734869A (zh) * 2011-04-07 2012-10-17 Lg电子株式会社 空调
CN104154630A (zh) * 2014-07-22 2014-11-19 美的集团武汉制冷设备有限公司 空调系统的控制方法和控制装置
CN106918162A (zh) * 2017-03-29 2017-07-04 广东美的制冷设备有限公司 空调器
CN106958892A (zh) * 2017-03-29 2017-07-18 广东美的制冷设备有限公司 空调器

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109607481A (zh) * 2019-01-08 2019-04-12 湖南有色郴州氟化学有限公司 用于氢氟酸生产工艺的反应炉炉尾紧急出口及反应炉
CN109607481B (zh) * 2019-01-08 2023-10-24 湖南有色郴州氟化学有限公司 用于氢氟酸生产工艺的反应炉炉尾紧急出口及反应炉
CN111435058A (zh) * 2019-01-11 2020-07-21 青岛海尔空调器有限总公司 芯片换热器及变频空调器

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