WO2015129047A1 - アキュムレータ及びこのアキュムレータを備えた冷凍装置 - Google Patents
アキュムレータ及びこのアキュムレータを備えた冷凍装置 Download PDFInfo
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- WO2015129047A1 WO2015129047A1 PCT/JP2014/055164 JP2014055164W WO2015129047A1 WO 2015129047 A1 WO2015129047 A1 WO 2015129047A1 JP 2014055164 W JP2014055164 W JP 2014055164W WO 2015129047 A1 WO2015129047 A1 WO 2015129047A1
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- container
- accumulator
- gas
- refrigerant
- compressors
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Classifications
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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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/006—Accumulators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/0042—Degasification of liquids modifying the liquid flow
- B01D19/0052—Degasification of liquids modifying the liquid flow in rotating vessels, vessels containing movable parts or in which centrifugal movement is caused
- B01D19/0057—Degasification of liquids modifying the liquid flow in rotating vessels, vessels containing movable parts or in which centrifugal movement is caused the centrifugal movement being caused by a vortex, e.g. using a cyclone, or by a tangential inlet
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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
- F25B31/00—Compressor arrangements
- F25B31/002—Lubrication
- F25B31/004—Lubrication oil recirculating arrangements
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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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
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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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/07—Details of compressors or related parts
- F25B2400/075—Details of compressors or related parts with parallel compressors
Definitions
- the present invention relates to an accumulator of a refrigeration apparatus equipped with a plurality of compressors, and a refrigeration apparatus provided with the accumulator.
- an accumulator that is used in a refrigeration apparatus including a plurality of compressors, and that only one accumulator is provided for the plurality of compressors (see, for example, Patent Document 1).
- This accumulator includes one inflow pipe and a plurality of outflow pipes connected to the suction sides of the plurality of compressors.
- the gas-liquid mixed refrigerant in which the refrigerant and the oil are mixed flows into the inflow pipe.
- the inflow piping is inserted from the upper surface of the accumulator container, and the piping portion located in the accumulator is installed with an inclination angle with respect to the inner peripheral surface of the container.
- the accumulator of Patent Document 1 arranges the inflow pipe in this manner, thereby generating a swirling flow of the gas-liquid mixed refrigerant in the container and attaching the liquid in the swirling flow to the inner peripheral surface of the container by centrifugal force. Thus, the liquid and the gas contained in the gas-liquid mixed refrigerant are separated.
- the flow of the gas-liquid mixed refrigerant flowing into the container is a swirl flow, and the swirl flow collides with the liquid level of the refrigerant stored in the container, so that the liquid level turbulence and vortex (Vortex) occurs. Due to such disturbance of the liquid level and vortexing, there is a problem that the flow rate of the gas refrigerant flowing out from each outflow pipe varies.
- the present invention has been made in view of the above points, and provides an accumulator capable of improving variation in the outflow amount of gas refrigerant flowing out from each of a plurality of outflow pipes, and a refrigeration apparatus including the accumulator. Objective.
- An accumulator according to the present invention is an accumulator that is used in a refrigeration apparatus including a plurality of compressors and that is provided only for a plurality of compressors.
- a plurality of outlet pipes connected to the suction side of the plurality of compressors, one end of which is provided at one end of the container. It is an outlet that is located inside and flows out the gas refrigerant in the container toward a plurality of compressors, and the plurality of outlets are concentrated in the central portion of the container.
- the refrigeration apparatus according to the present invention includes the accumulator described above.
- the accumulator 200 which concerns on Embodiment 2 of this invention it is the figure which showed the streamline at the time of seeing the container 2 in a plane direction.
- the accumulator 200 which concerns on Embodiment 2 of this invention it is the figure which showed the streamline at the time of seeing the container 2 from a front direction.
- the accumulator 300 which concerns on Embodiment 3 of this invention it is the figure which showed the streamline at the time of seeing the container 2 in a plane direction.
- the accumulator 300 which concerns on Embodiment 3 of this invention it is the figure which showed the streamline at the time of seeing the container 2 from a front direction.
- FIG. 1 is a diagram showing a configuration of a refrigeration apparatus equipped with an accumulator 100 according to Embodiment 1 of the present invention.
- the same reference numerals are the same or equivalent, and this is common throughout the entire specification.
- the forms of the constituent elements appearing in the entire specification are merely examples and are not limited to these descriptions.
- compressor 1 includes a plurality of compressors 1a, 1b, 1c (hereinafter simply referred to as “compressor 1” when collectively referred to), and an accumulator 100 provided for each of the plurality of compressors 1. have.
- the refrigeration apparatus is further provided with a condenser, a throttling device, an evaporator, and the like (not shown) to constitute a refrigerant circuit in which the refrigerant circulates.
- correspond to three compressors is shown here, the number of the compressors which can respond
- the accumulator 100 includes a cylindrical container 2, an inflow pipe 3, a plurality of outflow pipes 4 a, 4 b, 4 c (hereinafter simply referred to as “outflow pipe 4”) and an oil return pipe 6. .
- Outflow piping 4a, 4b, 4c is connected to suction piping 5a, 5b, 5c of compressors 1a, 1b, 1c.
- a refrigerant in which a gas refrigerant, a liquid refrigerant, and oil are mixed (hereinafter referred to as a gas-liquid mixed refrigerant) circulates from the load side (evaporator).
- the accumulator 100 separates the gas-liquid mixed refrigerant into a gas refrigerant and a liquid refrigerant containing oil.
- the gas refrigerant separated here is supplied to the suction sides of the compressors 1a, 1b, and 1c via the outflow pipes 4a, 4b, and 4c, and the liquid refrigerant containing oil is stored in the container 2.
- oil stored in the container 2 is returned to the compressors 1a, 1b, and 1c from a liquid return unit 7 (see FIG. 2) described later provided in the outflow pipes 4a, 4b, and 4c. Therefore, a gas refrigerant containing oil (hereinafter referred to as oil-containing gas refrigerant) is supplied from the accumulator 100 to each of the compressors 1a, 1b, and 1c.
- oil-containing gas refrigerant a gas refrigerant containing oil
- FIG. 2 is a diagram showing a configuration of the accumulator 100 according to Embodiment 1 of the present invention.
- FIG. 2A is a front view.
- FIG. 2B is a perspective view of a state in which the upper container constituting the upper side of the container 2 is removed.
- FIG. 2C is a cross-sectional view.
- the inflow pipe 3 is provided so as to penetrate the container 2 in a direction (horizontal direction) orthogonal to the central axis X thereof.
- a tip located in the container 2 in the inflow pipe 3 becomes an inflow port 3 a, and the gas-liquid mixed refrigerant flows into the container 2 from the inflow port 3 a.
- the inflow port 3a is set at a position spaced apart from the inner peripheral surface 2a of the container 2 by a certain distance.
- the end surface on the inlet 3 a side in the inflow pipe 3 is an inclined surface inclined with respect to the tube axis 3 b of the inflow pipe 3.
- Each outflow pipe 4a, 4b, 4c is U-shaped, one end is located in the container 2 and the other end is located in the upper part of the container 2.
- One end of the outflow pipes 4a, 4b, and 4c located in the container 2 has outlets 9a, 9b, and 9c (hereinafter referred to as the outlets) through which the gas refrigerant in the container 2 flows out toward the compressors 1a, 1b, and 1c. It is simply referred to as “outlet 9”).
- the edge part of the one end side of outflow piping 4a, 4b, 4c is bent toward the central axis X side.
- the outlets 9a, 9b, 9c are concentrated in the central portion of the container 2 (the portion surrounded by the dotted line in FIG. 2 (C)) as shown in FIGS. 2 (B) and 2 (C). Is done.
- the edge part of the one end side of outflow piping 4a, 4b, 4c is bent toward the central axis X side from each position of equal intervals on the circumference centering on the central axis X, and the outflow port 9a, 9b 9c are arranged at equal intervals on the circumference centered on the central axis X.
- an interval a between adjacent ones is set to about 10 mm, for example.
- the outlets 9 may be installed at an interval a of 10 mm or more in consideration of manufacturability.
- outlets 9 a, 9 b, 9 c are located at a height above the inlet pipe 3.
- the other ends of the outflow pipes 4 a, 4 b, 4 c are also arranged on a circumference around the central axis X of the container 2.
- the other ends of the outflow pipes 4a, 4b, and 4c are connected to the suction pipes 5a, 5b, and 5c through the connecting portions 8a, 8b, and 8c.
- the outflow piping 4a, 4b, 4c is equipped with the liquid return part 7 in the same height position.
- An oil return pipe 6 that returns oil to the compressor 1 is connected to the lower portion of the container 2.
- FIG. 3 is a diagram showing streamlines when the container 2 is viewed in the plane direction in the accumulator 100 according to Embodiment 1 of the present invention.
- FIG. 4 is a diagram showing streamlines when the container 2 is viewed from the front direction in the accumulator 100 according to Embodiment 1 of the present invention.
- the gas-liquid mixed refrigerant flowing out from the evaporator (not shown) of the refrigeration apparatus flows into the container 2 through the inflow pipe 3.
- the inflow pipe 3 is provided through the container 2 in the direction orthogonal to the central axis X as described above. For this reason, the gas-liquid mixed refrigerant flowing into the container 2 from the inflow pipe 3 collides with the inner peripheral surface 2 a of the container 2.
- the gas-liquid mixed refrigerant colliding with the inner peripheral surface 2 a of the container 2 flows along the inner peripheral surface 2 a of the container 2.
- the flow along the inner peripheral surface 2 a of the container 2 is divided into a circumferential flow and a downward flow, and finally flows toward the bottom of the container 2 by its own weight.
- Liquid refrigerant droplets and oil droplets contained in the gas-liquid mixed refrigerant scatter in a mist, drop along the inner peripheral surface 2 a of the container 2, and accumulate in the lower part of the container 2.
- the gas-liquid mixed refrigerant flowing into the container 2 through the inflow pipe 3 has a high flow rate, for example, about 13 to 15.5 (m / s), but decelerates by colliding with the inner peripheral surface 2a of the container 2. Therefore, the gas-liquid separation is performed efficiently.
- a swirling flow does not occur in the container 2 because the speed is reduced by the collision of the gas-liquid mixed refrigerant with the inner peripheral surface 2a. Since the swirl flow is not generated in the container 2, it is possible to suppress the gas-liquid mixed refrigerant from directly colliding with the liquid surface of the liquid refrigerant / oil mixed liquid in the container 2. Further, the flow of the gas-liquid mixed refrigerant flowing from the inflow pipe 3 is a turbulent liquid flow. However, as described above, the swirl flow does not occur in the container 2, so that the gas-liquid mixed refrigerant in the container 2 does not flow. Flow disturbance can be suppressed. From the above, it is possible to suppress the disturbance of the liquid level (the liquid level is rough) and the generation of vortex in the liquid refrigerant / oil mixed liquid stored in the container 2.
- the outflow pipe 4 concentrates the outlet 9 in the center above the inflow pipe 3. Therefore, the gas-liquid mixed refrigerant flowing into the container 2 from the inlet 3a is not sucked from the outlet 9. Therefore, it is possible to eliminate the factor that causes the variation in the outflow amount of the gas refrigerant flowing out from each outflow pipe 4 and to suppress the variation.
- the oil accumulated at the height position of the liquid return unit 7 is sucked up from the liquid return unit 7 according to the gas speed of the gas refrigerant sucked from the outflow pipe 4 and sent to the compressor 1 together with the gas refrigerant.
- the amount of oil sucked up from the liquid return portion 7 is not stable, and the amount of oil flowing out varies when the oil flows out from the outflow pipe 4.
- variation in the outflow amount of oil from each outflow piping 4 can be suppressed.
- the inflow pipe 3 penetrates the container 2 in the direction perpendicular to the central axis X, and the flow that is the opening in the container 2 of each outflow pipe 4.
- the outlet 9 was concentrated at the center of the container 2.
- vortex flow in the container 2 can be suppressed, and disturbance of the liquid level in an accumulator and generation
- production of a vortex can be reduced.
- the oil-containing gas refrigerant can be evenly distributed to each outflow pipe 4, variation in the outflow amount of the oil-containing gas refrigerant can be suppressed, and the storage performance can be improved.
- FIG. FIG. 5 is a diagram showing a configuration of an accumulator 200 according to Embodiment 2 of the present invention.
- FIG. 5A is a front view.
- FIG. 5B is a plan view of a state where the upper container constituting the upper side of the container 2 is removed.
- the accumulator 200 according to the second embodiment has a configuration in which the accumulator 200 according to the first embodiment further includes a plurality of baffle plates (baffle plates) 20. Other configurations are the same as those in the first embodiment.
- the baffle plate 20 has a rectangular shape, and is erected on the inner peripheral surface 2 a so that the long side thereof is in contact with the inner peripheral surface 2 a of the container 2. Each baffle plate 20 is erected on the inner peripheral surface 2 a at equal intervals in the circumferential direction so that the surface direction thereof faces the radial direction of the container 2. One of the baffle plates 20 is disposed at an angle of 45 ° to 90 ° with respect to the tube axis 3b of the inflow pipe 3 from the inlet 3a side. They are arranged at equal intervals.
- the reference baffle position is referred to as a reference baffle position, and the angle thereof is referred to as a reference baffle angle.
- one of the four baffle plates 20 is disposed at a reference baffle angle of 45 °, and the other three baffle plates 20 are provided at 90 ° intervals from the reference baffle position.
- the number of baffle plates 20 is not limited to four, but may be two to three, for example.
- the width b in the short direction (standing direction) of the baffle plate 20 is D / 5 to D / 12, where D is the diameter of the container 2 from the viewpoint of reducing the speed of the gas-liquid mixed refrigerant. It is configured.
- FIG. 6 is a diagram showing streamlines when the container 2 is viewed in the plane direction in the accumulator 200 according to Embodiment 2 of the present invention.
- FIG. 7 is a diagram showing streamlines when the container 2 is viewed from the front direction in the accumulator 200 according to Embodiment 2 of the present invention. Since the rough flow of the gas-liquid mixed refrigerant is the same as that in the first embodiment, the operation of the baffle plate 20 will be mainly described here.
- the gas-liquid mixed refrigerant that has flowed into the container 2 collides with the inner peripheral surface 2a of the container 2 and then becomes a liquid flow in the circumferential direction along the inner peripheral surface 2a. Since the liquid flow of the gas-liquid mixed refrigerant collides with the baffle plate 20, it can be prevented from directly hitting the liquid surface. In addition, the liquid flow of the gas-liquid mixed refrigerant sequentially collides with the plurality of baffle plates 20 to reduce the flow velocity, so that the liquid level disturbance can be improved. Thus, since the flow velocity of the liquid flow of the gas-liquid mixed refrigerant is reduced, it is possible to suppress the occurrence of vortex in the liquid refrigerant / oil mixed liquid stored in the container 2 and to stabilize the liquid level.
- FIG. 8 shows the calculation result of a simulation demonstrating that it is effective for reducing the flow rate of the gas-liquid mixed refrigerant when the reference baffle angle is 45 ° to 90 °.
- the conditions used for the calculation were a refrigerant circulation rate of 1700 kg / h and a temperature of the gas-liquid mixed refrigerant sucked into the container 2 of 18 ° C.
- FIG. 8 is a bar graph showing calculation results of the relationship between the reference baffle angle and the refrigerant flow rate ratio on the inner peripheral surface 2a in the accumulator 200 according to Embodiment 2 of the present invention.
- one baffle plate 20 was installed by sequentially changing the reference baffle angle, and the refrigerant flow velocity on the inner peripheral surface 2a of the container 2 was calculated for each of them.
- the horizontal axis represents the reference baffle angle (°).
- the vertical axis represents the ratio (deceleration effect) (%) of the calculated refrigerant flow rate to the maximum flow rate of the gas-liquid mixed refrigerant from the inflow pipe 3.
- the reference baffle angle is 30 ° or less, it is considered that the liquid flow of the gas-liquid mixed refrigerant is adversely affected due to the distance between the baffle plate 20 and the inflow pipe 3 being too close, and the liquid level is disturbed. As a result, the refrigerant flow rate is not sufficiently reduced.
- the reference baffle angle is 45 ° to 90 °, the deceleration effect is 84% or less, and the refrigerant flow velocity reduction effect is sufficiently exhibited.
- the length b in the short direction of the baffle plate 20 is set to D / 5 to D / 12 for the following reason.
- the baffle plate 20 is provided to stabilize the liquid level in the concept of eliminating vortices and vortexes as in the so-called stirring tank.
- the above dimension ratio is an optimum baffle dimension ratio that is generally used. For this reason, the above dimensional proportion is also adopted in the second embodiment.
- the same effects as those of the first embodiment can be obtained, and the baffle plate 20 is installed on the inner peripheral surface 2a of the container 2, so that the interior of the accumulator 200 can be reduced.
- the liquid level disturbance and vortex generation can be further reduced.
- the second embodiment can further suppress variation in the outflow amount of the oil-containing gas refrigerant from each outflow pipe 4 as compared with the first embodiment, and can improve the storage performance.
- FIG. 9 is a diagram showing a configuration of an accumulator 300 according to Embodiment 3 of the present invention.
- FIG. 9A is a front view.
- FIG. 9B is a plan view of a state in which the upper container constituting the upper side of the container 2 is removed.
- the accumulator 300 according to the third embodiment has a configuration in which the accumulator 300 according to the first embodiment is further provided with a closing plate 30. Other configurations are the same as those in the first embodiment.
- the closing plate 30 is a donut shape, and the outer periphery thereof is installed in contact with the inner peripheral surface 2 a of the container 2.
- the closing plate 30 is installed at a position lower than the liquid return portion 7 provided in the inflow pipe 3 and the outflow pipe 4.
- the inner diameter d of the closing plate 30 is configured to be 3D / 5 to 4D / 5, where D is the diameter of the container 2 from the viewpoint of reducing the speed of the gas-liquid mixed refrigerant.
- the ratio of the inner diameter d of the closing plate 30 to the diameter D of the container 2 is in the range of 0.6 to 0.8.
- FIG. 10 is a diagram showing streamlines when the container 2 is viewed in the plane direction in the accumulator 300 according to Embodiment 3 of the present invention.
- FIG. 11 is a diagram showing streamlines when the container 2 is viewed from the front direction in the accumulator 300 according to Embodiment 3 of the present invention. Since the rough flow of the gas-liquid mixed refrigerant is the same as that of the first embodiment, here, the operation of the closing plate 30 will be mainly described.
- the gas-liquid mixed refrigerant that has flowed into the container 2 collides with the inner peripheral surface 2a of the container 2, and then is divided into a circumferential liquid flow and a downward liquid flow along the inner peripheral surface 2a. Since the downward liquid flow collides with the closing plate 30, it can be prevented from directly hitting the coolant surface. Further, since the liquid flow of the gas-liquid mixed refrigerant flows along the closing plate 30 and then flows toward the bottom of the container 2, it is possible to improve the liquid level disturbance. Moreover, since the flow velocity of the liquid flow of the gas-liquid mixed refrigerant can be reduced, the generation of vortex in the liquid refrigerant / oil mixed liquid stored in the container 2 can be suppressed, and the liquid level can be stabilized. it can.
- FIG. 12 below shows a calculation result of a simulation demonstrating that it is effective in reducing the flow velocity of the gas-liquid mixed refrigerant when the inner diameter d of the closing plate 30 is 3D / 5 to 4D / 5.
- the conditions used for the calculation were a coolant circulation rate of 1700 kg / h and a temperature of the gas-liquid mixed refrigerant sucked into the container 2 at 18 ° C. as described above.
- FIG. 12 is a bar graph showing the calculation result of the relationship between the inner diameter d of the closing plate 30 and the refrigerant flow velocity in the accumulator 300 according to the third embodiment of the present invention.
- the inner diameter d of the closing plate 30 is sequentially changed, and the refrigerant flow velocity on the inner peripheral surface 2a below the closing plate 30 is calculated for each of them.
- the horizontal axis is the inner diameter d (m) of the closing plate 30.
- the vertical axis represents the refrigerant flow rate increase / decrease ratio ( ⁇ ), which is the ratio of the calculated refrigerant flow rate to the maximum flow rate of the gas-liquid mixed refrigerant from the inflow pipe 3.
- the refrigerant flow rate increase / decrease ratio exceeds 1. That is, the refrigerant flow rate on the inner peripheral surface 2 a below the closing plate 30 exceeds the maximum flow rate of the gas-liquid mixed refrigerant from the inflow pipe 3.
- the refrigerant flow rate increase / decrease ratio is 1 or less, and the refrigerant flow rate on the inner peripheral surface 2a below the closing plate 30 is reduced from the inflow pipe 3. It is less than the maximum flow rate of the gas-liquid mixed refrigerant, and the effect of reducing the refrigerant flow rate is sufficiently exhibited.
- the same effects as those of the first embodiment can be obtained, and the closing plate 30 is installed on the inner peripheral surface 2a of the container 2, so that the inside of the container 2 of the accumulator 300 can be obtained.
- the liquid level disturbance and vortex generation can be further reduced.
- the third embodiment can further suppress the variation in the outflow amount of the oil-containing gas refrigerant as compared with the first embodiment, and can improve the storage performance.
- 1 (1a, 1b, 1c) compressor 2 container, 2a inner peripheral surface, 3 inlet pipe, 3a inlet, 3b pipe shaft, 4 (4a, 4b, 4c) outlet pipe, 5a, 5b, 5c inlet pipe, 6 oil return pipe, 7 liquid return portion, 8a, 8b, 8c connecting portion, 9 (9a, 9b, 9b) outlet, 20 baffle plate, 30 closing plate, 100 accumulator, 200 accumulator, 300 accumulator.
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Abstract
Description
図1は、本発明の実施の形態1に係るアキュムレータ100が搭載された冷凍装置の構成を示す図である。以下、図1及び後述の図において、同一の符号を付したものは、同一の又はこれに相当するものであり、これは明細書の全文において共通している。更に、明細書全文に表れている構成要素の形態は、あくまで例示であってこれらの記載に限定されるものではない。
図5は、本発明の実施の形態2に係るアキュムレータ200の構成を示す図である。図5(A)は正面図である。図5(B)は容器2の上部側を構成する上部容器を取り外した状態の平面図である。
実施の形態2のアキュムレータ200は、実施の形態1のアキュムレータ200に更に複数のバッフル板(邪魔板)20を備えた構成を有する。それ以外の構成は実施の形態1と同様である。
図9は、本発明の実施の形態3に係るアキュムレータ300の構成を示す図である。図9(A)は正面図である。図9(B)は容器2の上部側を構成する上部容器を取り外した状態の平面図である。
実施の形態3のアキュムレータ300は、実施の形態1のアキュムレータ300に更に塞ぎ板30を備えた構成を有する。それ以外の構成は実施の形態1と同様である。
Claims (10)
- 複数の圧縮機を備えた冷凍装置に用いられ且つ複数の圧縮機に対して1つだけ設けられるアキュムレータであって、
円筒状の容器に、その中心軸に直交して貫通して設けられ、気液混合冷媒を前記容器の内部に流入させる流入配管と、
前記複数の圧縮機の吸入側に接続される複数の流出配管とを備え、
前記複数の流出配管は、一端が前記容器の内部に位置して前記容器内のガス冷媒を前記複数の圧縮機に向けて流出させる流出口となっており、
前記複数の流出口が、前記容器の中央部に集中して配置されている
ことを特徴とするアキュムレータ。 - 前記流出配管はU字状に構成され、前記一端と反対側の他端が前記容器の上部に位置しており、前記流出配管の前記一端が前記中心軸側に向けて折曲されることで前記複数の流出口が前記容器の中央部に配置されている
ことを特徴とする請求項1記載のアキュムレータ。 - 前記容器の内周面に、前記流入配管から前記容器内に流入する前記気液混合冷媒の流れを妨げるバッフル板が立設されている
ことを特徴とする請求項1又は請求項2記載のアキュムレータ。 - 前記バッフル板を複数備えており、複数の前記バッフル板は前記容器の内周面に周方向に等間隔に立設されている
ことを特徴とする請求項3記載のアキュムレータ。 - 前記バッフル板は長方形状に形成され、その長辺側が前記容器の内周面に接するようにして前記容器の内周面に立設されている
ことを特徴とする請求項4記載のアキュムレータ。 - 複数の前記バッフル板の一枚は、前記流入配管の管軸に対して、前記流入配管の前記容器内に開口した流入口側から45°~90°の角度の位置(以下、基準バッフル位置と称する)に配置され、残りの前記バッフル板は、前記基準バッフル位置から等間隔に配置されている
ことを特徴とする請求項4又は請求項5記載のアキュムレータ。 - 前記バッフル板の立設方向の幅は、前記容器の直径をDとしたとき、D/5~D/12の範囲で構成されている
ことを特徴とする請求項3~請求項6の何れか一項に記載のアキュムレータ。 - ドーナツ状の塞ぎ板が、その外周を前記容器の内周面に接触するようにして設けられている
ことを特徴とする請求項1記載のアキュムレータ。 - 前記塞ぎ板の内径は、前記容器の直径をDとしたとき、3D/5~4D/5の範囲で構成されている
ことを特徴とする請求項8記載のアキュムレータ。 - 請求項1~請求項9の何れか一項に記載のアキュムレータを備えた冷凍装置。
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CN201480073018.2A CN105899893B (zh) | 2014-02-28 | 2014-02-28 | 储液器和具备该储液器的冷冻装置 |
PCT/JP2014/055164 WO2015129047A1 (ja) | 2014-02-28 | 2014-02-28 | アキュムレータ及びこのアキュムレータを備えた冷凍装置 |
JP2016504979A JP6173558B2 (ja) | 2014-02-28 | 2014-02-28 | アキュムレータ及びこのアキュムレータを備えた冷凍装置 |
EP14883889.9A EP3112780B1 (en) | 2014-02-28 | 2014-02-28 | Accumulator, and refrigeration device with said accumulator |
US15/106,333 US10060661B2 (en) | 2014-02-28 | 2014-02-28 | Accumulator and refrigeration apparatus including the same |
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PCT/JP2014/055164 WO2015129047A1 (ja) | 2014-02-28 | 2014-02-28 | アキュムレータ及びこのアキュムレータを備えた冷凍装置 |
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US (1) | US10060661B2 (ja) |
EP (1) | EP3112780B1 (ja) |
JP (1) | JP6173558B2 (ja) |
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WO2023084771A1 (ja) * | 2021-11-15 | 2023-05-19 | 三菱電機株式会社 | アキュムレータおよび冷凍サイクル装置 |
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MX347977B (es) | 2003-08-20 | 2017-05-22 | Hunter Douglas | Persiana retráctil con tablillas plegadizas. |
US8393080B2 (en) | 2003-08-20 | 2013-03-12 | Hunter Douglas Inc. | Method for making a window covering having operable vanes |
CA2722375C (en) | 2009-12-02 | 2019-06-11 | Hunter Douglas Inc. | Collapsible vane structure and related method for a shade for an architectural opening |
CN108626922B (zh) | 2017-03-17 | 2020-12-04 | Lg电子株式会社 | 储液器 |
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- 2014-02-28 WO PCT/JP2014/055164 patent/WO2015129047A1/ja active Application Filing
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US20170051956A1 (en) | 2017-02-23 |
US10060661B2 (en) | 2018-08-28 |
CN105899893B (zh) | 2018-06-01 |
JPWO2015129047A1 (ja) | 2017-03-30 |
EP3112780A1 (en) | 2017-01-04 |
JP6173558B2 (ja) | 2017-08-02 |
EP3112780B1 (en) | 2019-08-07 |
CN105899893A (zh) | 2016-08-24 |
EP3112780A4 (en) | 2017-11-01 |
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