WO2016059706A1 - 液溜め容器 - Google Patents
液溜め容器 Download PDFInfo
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- WO2016059706A1 WO2016059706A1 PCT/JP2014/077576 JP2014077576W WO2016059706A1 WO 2016059706 A1 WO2016059706 A1 WO 2016059706A1 JP 2014077576 W JP2014077576 W JP 2014077576W WO 2016059706 A1 WO2016059706 A1 WO 2016059706A1
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- Prior art keywords
- self
- liquid
- liquid level
- heating
- heating sensors
- Prior art date
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/24—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid
- G01F23/246—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid thermal devices
- G01F23/247—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid thermal devices for discrete levels
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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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- 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
- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/24—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid
- G01F23/241—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid for discrete levels
- G01F23/243—Schematic arrangements of probes combined with measuring circuits
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/24—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid
- G01F23/246—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid thermal devices
- G01F23/247—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid thermal devices for discrete levels
- G01F23/248—Constructional details; Mounting of probes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/80—Arrangements for signal processing
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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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/04—Refrigerant level
Definitions
- the present invention relates to a liquid storage container.
- a technique in which the thermistor self-heats and the presence / absence of liquid is determined using the characteristic that the temperature of the thermistor changes depending on the presence / absence of liquid.
- a liquid level detection device using such a technique for example, there is one provided with a plurality of thermistor resistance layers sequentially provided from the upper side to the lower side (see, for example, Patent Document 1).
- the present invention has been made against the background of the above-described problems, and an object of the present invention is to provide a liquid storage container that is less likely to cause wiring handling than before.
- the liquid storage container of the present invention is a liquid storage container in which liquid level detection means is provided, wherein a plurality of the liquid level detection means are provided, and each of the liquid level detection means includes a plurality of self-heating sensors. Each of the plurality of self-heating sensors is located at different heights.
- each of the plurality of liquid level detection means has a plurality of self-heating sensors, and all the self-heating sensors are located at different heights. For this reason, it is less likely that wiring routing restrictions occur than before.
- FIG. 3 is a schematic view showing a part of the liquid level detecting means 20 of the liquid reservoir 15 according to Embodiment 1 of the present invention.
- FIG. 3 is a schematic view showing a state in which a liquid level detection means 20 is provided inside the liquid reservoir 15 according to Embodiment 1 of the present invention.
- FIG. 1 is a schematic view showing a refrigerating and air-conditioning apparatus 100 in which a liquid reservoir container 15 according to Embodiment 1 of the present invention is provided on a refrigerant circuit.
- FIG. 2 is a schematic view showing the liquid reservoir 15 according to Embodiment 1 of the present invention.
- FIG. 3 is a schematic view showing the liquid reservoir 15 according to Embodiment 1 of the present invention.
- the refrigeration air conditioner 100 includes a compressor 11, a condenser 12, an expansion valve 13, an evaporator 14, and a liquid storage container 15.
- the refrigerating and air-conditioning apparatus 100 is configured by sequentially connecting, for example, the compressor 11, the condenser 12, the expansion valve 13, the evaporator 14, and the liquid storage container 15 by piping.
- the arrow direction points out the flow direction of a refrigerant
- the compressor 11 is a variable capacity compressor that compresses the sucked refrigerant and discharges it as a high-temperature and high-pressure refrigerant.
- the condenser 12 is a heat exchanger that condenses and liquefies the refrigerant discharged from the compressor 11.
- the expansion valve 13 is provided on the outlet side of the condenser 12 and on the inlet side of the evaporator 14, and functions as a decompression unit that decompresses the refrigerant flowing on the outlet side of the condenser 12.
- the evaporator 14 is a heat exchanger that evaporates the refrigerant decompressed by the expansion valve 13.
- the refrigerant flowing through the condenser 12 and the indoor air are exchanged in the condenser 12, and the refrigerant flowing through the evaporator 14 and the outdoor air are exchanged in the evaporator 14.
- the condenser 12 exchanges heat between the refrigerant flowing through the condenser 12 and the outdoor air
- the evaporator 14 exchanges heat between the refrigerant flowing through the evaporator 14 and the indoor air.
- the liquid reservoir 15 is, for example, a pressure container, and has a container thickness of 4 to 10 m.
- the liquid reservoir 15 has a structure in which liquid refrigerant is accumulated in the lower part and only gas refrigerant is easily circulated. As a result, the gas portion speed increases due to an increase in the circulation amount of the refrigerant, whereas the liquid portion speed hardly increases.
- An inflow pipe 151 and an outflow pipe 152 are provided in the upper part of the liquid reservoir 15 so as to penetrate the upper surface of the liquid reservoir 15 up and down.
- 2 and 3 a indicate a region where the gas refrigerant is accumulated.
- 2 and 3 b indicate the region where the liquid refrigerant is accumulated.
- the inflow pipe 151 is a pipe for guiding the refrigerant flowing on the outlet side of the evaporator 14 to the inside of the liquid storage container 15, and is provided so as to communicate the inside of the liquid storage container 15 and the outside of the liquid storage container 15. .
- the inflow pipe 151 is provided so that the fluid that has flowed into the liquid storage container 15 flows in a horizontal direction with respect to the installation surface of the liquid storage container 15. Thereby, the shaking of the liquid level of the liquid reservoir 15 can be suppressed as much as possible.
- the outflow pipe 152 is a pipe for guiding the refrigerant inside the liquid reservoir 15 to the suction side of the compressor 11, and is provided so as to communicate the inside of the liquid reservoir 15 and the outside of the liquid reservoir 15.
- the liquid storage container 15 a vertical container or a horizontal container is employed.
- the vertical container refers to a container in which a cylindrical container is erected and has an aspect ratio that is vertically long.
- the horizontal container is a container in which a cylindrical container is laid as shown in FIG. 3, for example, and has a horizontally long aspect ratio.
- FIG. 4 is a schematic diagram showing a part of the liquid level detecting means 20 of the liquid reservoir 15 according to Embodiment 1 of the present invention.
- the liquid level detecting means 20 is for judging the level of the liquid level stored in the liquid reservoir 15, and is a self-heating sensor 201a-201c (liquid level). Sensor), a sheath tube 202, and a wiring 203.
- the self-heating sensors 201a to 201c are self-heating elements made of a material whose element resistance changes according to the element temperature, and are made up of, for example, an NTC sensor and a PTC sensor. Since the heat transfer coefficient varies depending on the external state (liquid, gas) of the self-heating sensors 201a to 201c, the heat radiation amount also varies. For this reason, for example, the temperature of the self-heating sensor differs between liquid and gas. By comparing this temperature, it is possible to determine whether the surroundings of the self-heating sensors 201a to 201c are gas or liquid.
- the self-heating sensor provided inside the liquid level detection means 20 may be collectively referred to as a self-heating sensor 201.
- the sheath tube 202 is for housing the self-heating sensor 201 therein, and is constituted by, for example, a cylindrical member.
- a plurality of self-heating sensors 201 are provided at equal intervals in the vertical direction. Since the inner diameter of the sheath tube 202 is limited, the number of self-heating sensors 201 provided on one sheath tube 202 is limited. For this reason, the interval between the self-heating sensors 201 adjacent in the vertical direction is determined in consideration of the inner diameter of the sheath tube 202.
- the wiring 203 is a conductive wire for transmitting a signal detected by the self-heating sensor 201 to a control unit (not shown), and is provided in each self-heating sensor 201.
- the wiring 203 of each self-heating sensor 201 is bundled and passed through the sheath tube 202.
- the control means determines the liquid level of the liquid reservoir 15 based on the signal from the self-heating sensor 201 input through the wiring 203.
- FIG. 5 is a schematic view showing a state in which the liquid level detecting means 20 is provided inside the liquid reservoir 15 according to Embodiment 1 of the present invention.
- a vertical container is adopted as the liquid storage container 15.
- the self-heating sensors 201 a to 201 n are provided perpendicular to the bottom surface of the liquid reservoir 15.
- the liquid level detecting means 20 located on the left side of FIG. 5 is provided with self-heating sensors 201a to 201g.
- the liquid level detecting means 20 located on the right side of FIG. 5 is provided with self-heating sensors 201h to 201n.
- the self-heating sensors 201h, 201a, 201i, 201b, 201j, 201c, 201k, 201d, 201l, 201e, 201m, 201f, 201n, and 201g are provided in this order from the top of the liquid storage container 15.
- the self-heating sensors 201a to 201g and the self-heating sensors 201h to 201n are provided with their height positions shifted from each other. That is, the self-heating sensors 201a to 201n are arranged in a staggered manner.
- the self-heating sensors 201a to 201g are provided, for example, so that the distances between adjacent self-heating sensors are equal.
- the self-heating sensors 201h to 201n are provided such that the distances between adjacent self-heating sensors are equal.
- each of the plurality of liquid level detection means 20 includes the plurality of self-heating sensors 201, and all the self-heating sensors 201 are Located at different heights.
- the plurality of self-heating sensors 201 are provided in a staggered manner. For this reason, it is possible to eliminate restrictions on the wiring arrangement than before. Therefore, more self-heating sensors 201 can be provided than before, and the liquid amount determination resolution is improved. As a result, even if the refrigerant changes by a small amount, the change can be detected, so that refrigerant leakage from the refrigeration air conditioner 100 can be detected at an early stage. In particular, when a refrigerant that adversely affects the global environment such as global warming is used, leakage of the refrigerant can be prevented in advance, which is useful because it leads to protection of the global environment.
- each liquid level detecting means 20 only needs to have a plurality of self-heating sensors 201.
- liquid level detecting means 20 In the first embodiment, an example in which two liquid level detecting means 20 are provided has been described. However, the example is provided for convenience of description, and the present invention is not limited to this. For example, three or more liquid level detection means 20 may be provided. As a result, the number of self-heating sensors 201 provided per one liquid level detection means 20 can be reduced, and wiring routing restrictions can be further eliminated.
- Embodiment 2 the self-heating sensor 201 is arranged differently from the first embodiment.
- items that are not particularly described are the same as those in the first embodiment, and the same functions and configurations are described using the same reference numerals.
- FIG. 6 is a schematic view showing a state in which the liquid level detecting means 20 is provided inside the liquid reservoir 15 according to Embodiment 2 of the present invention.
- a vertical container is adopted as the liquid storage container 15.
- the self-heating sensors 201 a to 201 n are provided perpendicular to the bottom surface of the liquid storage container 15.
- the liquid level detecting means 20 located on the left side of FIG. 6 is provided with self-heating sensors 201a to 201g.
- the liquid level detecting means 20 located on the right side of FIG. 6 is provided with self-heating sensors 201h to 201n.
- the self-heating sensors 201h, 201i, 201j, 201k, 201l, 201m, 201n, 201a, 201b, 201c, 201d, 201e, 201f, and 201g are provided in this order from the top of the liquid storage container 15.
- the self-heating sensors 201a to 201g are provided so that the distances between adjacent self-heating sensors are equal.
- the self-heating sensors 201h to 201n are provided such that the distances between adjacent self-heating sensors are equal.
- each of the plurality of liquid level detection means 20 includes the plurality of self-heating sensors 201, and all the self-heating sensors 201 are Located at different heights.
- Self-heating sensors 201h to 201n are provided at positions higher than the self-heating sensors 201a to 201g. For this reason, it is possible to eliminate restrictions on the wiring arrangement than before. Therefore, more self-heating sensors 201 can be provided than before, and the liquid amount determination resolution is improved. As a result, even if the refrigerant changes by a small amount, the change can be detected, so that refrigerant leakage from the refrigeration air conditioner 100 can be detected early. In particular, when a refrigerant that adversely affects the global environment such as global warming is used, leakage of the refrigerant can be prevented in advance, which is useful because it leads to protection of the global environment.
- the self-heating of the liquid level detection means 20 to be added is below the self-heating sensor 201g or above the self-heating sensor 201h.
- the type sensor should be located. That is, when the liquid level detection means 20 is newly added, the self-heating sensor of the added liquid level detection means 20 is not positioned between the self-heating sensor 201a and the self-heating sensor 201g and It is preferable not to be positioned between the heat-generating sensor 201n and the self-heating sensor 201h.
- Embodiment 3 FIG.
- the arrangement of the plurality of liquid level detecting means 20 is determined based on the position of the self-heating sensor 201 and the position of the inflow pipe 151.
- items that are not particularly described are the same as those in Embodiment 1, and the same functions and configurations are described using the same reference numerals.
- FIG. 7 is a schematic view showing a state in which the liquid level detecting means 20 is provided inside the liquid reservoir 15 according to Embodiment 3 of the present invention.
- a vertical container is adopted as the liquid storage container 15.
- the self-heating sensors 201 a to 201 h are provided perpendicular to the bottom surface of the liquid reservoir 15.
- the liquid level detecting means 20 located on the left side of FIG. 7 is provided with self-heating sensors 201a to 201d.
- the liquid level detecting means 20 located on the right side of FIG. 7 is provided with self-heating sensors 201e to 201h.
- the self-heating sensors 201e, 201f, 201g, 201h, 201a, 201b, 201c, 201d are provided in this order from the top of the liquid storage container 15.
- the liquid storage container 15 provided at a position closest to the inflow pipe 151 is provided with a liquid level detecting means 20 having self-heating sensors 201a to 201d therein.
- the liquid reservoir 15 provided at the farthest position from the inflow pipe 151 among the plurality of liquid reservoirs 15 is provided with a liquid level detecting means 20 having self-heating sensors 201e to 201h therein.
- the plurality of liquid level detection means 20 are provided with the liquid level detection means 20 having a plurality of relatively low self-heating sensors 201 in order from the shortest distance from the inflow pipe 151.
- the self-heating sensors 201a to 201d are provided so that the distances between adjacent self-heating sensors are equal.
- the self-heating sensors 201e to 201h are provided so that the distances between adjacent self-heating sensors are equal.
- the liquid reservoir 15 according to Embodiment 3 of the present invention includes a plurality of self-heating types of the liquid level detecting means 20 provided farthest from the inflow pipe 151 among the plurality of liquid level detecting means.
- the sensor 201 is positioned higher than the plurality of self-heating sensors 201 of the remaining liquid level detection means 20.
- the self-heating sensor 201 located on the high liquid surface side is installed at a position farther from the inflow pipe 151. For this reason, the influence of the liquid level scattering near the liquid level by the blow-out jet flow when the inflow velocity is large, the influence of undulations, and the like are reduced, and the liquid level detection accuracy at the time of high liquid level is improved. This makes it possible to suppress erroneous detection of the liquid level under the high liquid level and high flow rate inflow conditions, and to determine the liquid level with high accuracy regardless of the liquid level.
- the liquid level detecting means 20 having a self-heating sensor having a lower height than the self-heating sensor 201d may be added.
- the added liquid level detecting means 20 may be configured to be provided closer to the inflow pipe 151 than the liquid level detecting means 20 having the self-heating sensors 201a to 201d.
- Embodiment 4 FIG.
- the liquid level detecting means 20 is provided inside the horizontal liquid storage container 15.
- items not particularly described are the same as those in the first embodiment, and the same functions and configurations are described using the same reference numerals.
- FIG. 8 is a schematic view showing a state in which the liquid level detecting means 20 is provided inside the liquid reservoir 15 according to Embodiment 4 of the present invention.
- a horizontal container is adopted as the liquid reservoir 15.
- the self-heating sensors 201 a to 201 k are provided with an acute inclination with respect to the vertical direction with respect to the bottom surface of the liquid storage container 15.
- the liquid level detecting means 20 located on the left side of FIG. 6 is provided with self-heating sensors 201a to 201g.
- the liquid level detecting means 20 located on the right side of FIG. 6 is provided with self-heating sensors 201h to 201n.
- self-heating sensors 201l, 201a, 201m, 201b, 201n, 201c, 201o, 201d, 201p, 201e, 201q, 201f, 201r, 201g, 201s, 201h, 201t, 201i, 201u , 201j, 201v, 201k are provided in this order.
- the self-heating sensors 201a to 201k and the self-heating sensors 201l to 201v are provided with their height positions shifted from each other. That is, the self-heating sensors 201a to 201v are arranged in a staggered manner.
- the self-heating sensors 201a to 201k are provided, for example, such that the distances between adjacent self-heating sensors are equal.
- the self-heating sensors 201l to 201v are provided so that the distances between adjacent self-heating sensors are equal.
- the self-heating sensors 201a to 201k are provided at an acute angle with respect to the vertical direction with respect to the bottom surface of the liquid storage container 15, the difference in height between adjacent self-heating sensors is represented by A.
- a ⁇ B where B is the distance between adjacent self-heating sensors.
- the self-heating sensor 201 of the liquid storage container 15 according to Embodiment 4 of the present invention is provided with an acute angle inclination with respect to the vertical direction with respect to the bottom surface of the liquid storage container 15. For this reason, in particular, when the liquid reservoir 15 is formed of a horizontally long container, the liquid amount determination resolution can be improved. Therefore, it becomes possible to discriminate even a minute change in the amount of refrigerant, and refrigerant leakage from the refrigeration air conditioner 100 can be detected at an early stage. In particular, when a refrigerant that adversely affects the global environment such as global warming is used, leakage of the refrigerant can be prevented in advance, which is useful because it leads to protection of the global environment.
- the height of the liquid reservoir 15 is lower than the distance between the self-heating sensor 201a located at the top and the self-heating sensor 201k located at the bottom. Specifically, when provided perpendicular to the bottom surface of the liquid reservoir 15, the self-heating sensors 201a and 201k are not used as liquid level detection sensors and are not wasted.
- the angle to incline is not limited to a specific angle, and an appropriate angle can be adopted as appropriate.
- the liquid level detecting means 20 is provided perpendicular to the bottom surface of the liquid reservoir 15, when there is a self-heating sensor 201 that does not fit inside the liquid reservoir 15, the self-heating sensor 201 is accommodated.
- An angle that fits inside the liquid reservoir 15 may be employed.
- the self-heating sensor 201 located at the top and the self-heating located at the bottom in a state where all the self-heating sensors 201 are vertically arranged.
- the distance from the type sensor 201 is higher than the height of the liquid reservoir 15, it is inclined with respect to the direction perpendicular to the bottom surface of the liquid reservoir 15, and is the same as in the above-described fourth embodiment. The effect can be demonstrated.
- Embodiment 5 FIG.
- the liquid level detecting means 20 is provided inside the horizontal liquid storage container 15.
- items that are not particularly described are the same as those in the first embodiment, and the same functions and configurations are described using the same reference numerals.
- FIG. 9 is a schematic view showing a state in which the liquid level detecting means 20 is provided inside the liquid reservoir 15 according to Embodiment 5 of the present invention.
- a horizontal container is adopted as the liquid reservoir 15.
- the liquid level detecting means 20 is provided so as to be inclined with respect to the vertical direction with respect to the bottom surface of the liquid reservoir 15.
- the self-heating sensors 201l, 201m, 201n, 201o, 201p, 201q, 201r, 201s, 201t, 201u, 201v, 201j, 201v, 201a, 201b, 201c, 201d, 201e, 201f , 201g, 201h, 201i, 201j, 201k are provided in this order.
- the self-heating sensors 201a to 201g are provided, for example, so that the distances between adjacent self-heating sensors are equal.
- the self-heating sensors 201h to 201n are provided such that the distances between adjacent self-heating sensors are equal.
- the self-heating sensors 201a to 201k are provided at an acute angle with respect to the vertical direction with respect to the bottom surface of the liquid storage container 15, the difference in height between adjacent self-heating sensors is represented by A.
- a ⁇ B where B is the distance between adjacent self-heating sensors.
- the self-heating sensor 201 of the liquid reservoir 15 according to the fifth embodiment of the present invention is provided with an acute angle inclination with respect to the vertical direction with respect to the bottom surface of the liquid reservoir 15. For this reason, in particular, when the liquid reservoir 15 is formed of a horizontally long container, the liquid amount determination resolution can be improved. Therefore, it becomes possible to discriminate even a minute change in the amount of refrigerant, and refrigerant leakage from the refrigeration air conditioner 100 can be detected at an early stage. In particular, when a refrigerant that adversely affects the global environment such as global warming is used, leakage of the refrigerant can be prevented in advance, which is useful because it leads to protection of the global environment.
- the height of the liquid reservoir 15 is lower than the distance between the self-heating sensor 201a located at the top and the self-heating sensor 201k located at the bottom. Specifically, when provided perpendicular to the bottom surface of the liquid reservoir 15, the self-heating sensors 201a and 201k are not used as liquid level detection sensors and are not wasted.
- the liquid storage container 15 constituting the refrigerating and air-conditioning apparatus 100 is taken as an example.
- the use of the multipoint liquid level detection sensor installation method of the present invention is not limited to this. This is a technique that can be applied for the purpose of detecting the interface height between liquid and gas in a container such as air, oil and air.
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Abstract
Description
図1は本発明の実施の形態1に係る液溜め容器15を冷媒回路上に設けた冷凍空調装置100を示す概略図である。図2は本発明の実施の形態1に係る液溜め容器15を示す概略図である。図3は本発明の実施の形態1に係る液溜め容器15を示す概略図である。
このため、従来よりも配線の取り回し制約をなくすことができる。したがって、従来よりも自己発熱式センサ201を多く設けることができ、液量判定分解能が向上する。これにより、冷媒が微小量変化しても、その変化を検出することがきるようになるため、冷凍空調装置100からの冷媒漏洩を早期に発見することができる。特に、地球温暖化など地球環境に悪影響を与える冷媒を用いた場合においては、冷媒漏洩を未然に防ぐことができ、地球環境保護にも繋がるため有用である。
本実施の形態2においては、実施の形態1とは異なるように、自己発熱式センサ201を配置したものである。なお、本実施の形態2において、特に記述しない項目については実施の形態1と同様とし、同一の機能や構成については同一の符号を用いて述べることとする。
このため、従来よりも配線の取り回し制約をなくすことができる。したがって、従来よりも自己発熱式センサ201を多く設けることができ、液量判定分解能が向上する。これにより、冷媒が微小量変化しても、その変化を検出することがきるようになるため、冷凍空調装置100からの冷媒漏洩を早期に発見することができる。特に、地球温暖化など地球環境に悪影響を与える冷媒を用いた場合においては、冷媒漏洩を未然に防ぐことができ、地球環境保護にも繋がるため有用である。
本実施の形態3においては、実施の形態1とは異なり、自己発熱式センサ201の位置及び流入管151の位置に基づいて複数の液面レベル検知手段20の配置を決定したものである。なお、本実施の形態3において、特に記述しない項目については実施の形態1と同様とし、同一の機能や構成については同一の符号を用いて述べることとする。
本実施の形態4においては、実施の形態1とは異なり、横置きの液溜め容器15の内部に液面レベル検知手段20を設けたものである。なお、本実施の形態4において、特に記述しない項目については実施の形態1と同様とし、同一の機能や構成については同一の符号を用いて述べることとする。
このため、特に、液溜め容器15が横長の容器で構成される場合において液量判定分解能を向上させることができる。したがって、微小の冷媒量変化でも判別できるようになり、冷凍空調装置100からの冷媒漏洩を早期に発見することができる。特に、地球温暖化など地球環境に悪影響を与える冷媒を用いた場合においては、冷媒漏洩を未然に防ぐことができ、地球環境保護にも繋がるため有用である。
本実施の形態4においては、実施の形態1とは異なり、横置きの液溜め容器15の内部に液面レベル検知手段20を設けたものである。なお、本実施の形態5において、特に記述しない項目については実施の形態1と同様とし、同一の機能や構成については同一の符号を用いて述べることとする。
このため、特に、液溜め容器15が横長の容器で構成される場合において液量判定分解能を向上させることができる。したがって、微小の冷媒量変化でも判別できるようになり、冷凍空調装置100からの冷媒漏洩を早期に発見することができる。特に、地球温暖化など地球環境に悪影響を与える冷媒を用いた場合においては、冷媒漏洩を未然に防ぐことができ、地球環境保護にも繋がるため有用である。
Claims (7)
- 液面レベル検知手段が内部に設けられる液溜め容器であって、
前記液面レベル検知手段は複数設けられ、
各前記液面レベル検知手段は複数の自己発熱式センサを有し、
各前記複数の自己発熱式センサは異なる高さに位置している
液溜め容器。 - 前記複数の自己発熱式センサは千鳥状に設けられている
請求項1に記載の液溜め容器。 - 一の前記液面レベル検知手段の前記複数の自己発熱式センサが設けられる範囲から外れる上下方向の位置に、残りの前記液面レベル検知手段の全ての自己発熱式センサが設けられている
請求項1に記載の液溜め容器。 - 前記液溜め容器の上部には、冷媒が流入する流入管が設けられ、
複数の前記液面レベル検知手段のうち前記流入管から最も遠くに設けられる液面レベル検知手段の前記複数の自己発熱式センサは、残りの前記液面レベル検知手段の前記複数の自己発熱式センサよりも高い位置にある
請求項3に記載の液溜め容器。 - 前記流入管からの距離が近い方から順に、相対的に高さの低い前記複数の自己発熱式センサを有する液面レベル検知手段が設けられている
請求項4に記載の液溜め容器。 - 各前記複数の自己発熱式センサは、
前記液溜め容器の底面に対して垂直に設けられている
請求項1~請求項5の何れか一項に記載の液溜め容器。 - 各前記複数の自己発熱式センサは、
前記液溜め容器の底面に対する垂直方向を基準として鋭角傾斜して設けられている
請求項1~請求項5の何れか一項に記載の液溜め容器。
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US15/514,838 US10113896B2 (en) | 2014-10-16 | 2014-10-16 | Liquid reservoir with a plurality of liquid level detection units |
GB1705680.5A GB2545844B (en) | 2014-10-16 | 2014-10-16 | Liquid reservoir |
JP2016553930A JP6161832B2 (ja) | 2014-10-16 | 2014-10-16 | 液溜め容器 |
PCT/JP2014/077576 WO2016059706A1 (ja) | 2014-10-16 | 2014-10-16 | 液溜め容器 |
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JP2018019668A (ja) * | 2016-08-05 | 2018-02-08 | 三菱マヒンドラ農機株式会社 | コンバイン |
JP2018019669A (ja) * | 2016-08-05 | 2018-02-08 | 三菱マヒンドラ農機株式会社 | コンバイン |
JPWO2017212532A1 (ja) * | 2016-06-06 | 2018-09-06 | 三菱電機株式会社 | 冷凍サイクル装置 |
WO2018229890A1 (ja) * | 2017-06-14 | 2018-12-20 | 三菱電機株式会社 | 冷凍サイクル装置 |
JPWO2018073902A1 (ja) * | 2016-10-19 | 2019-06-24 | 三菱電機株式会社 | 液面検知装置及び冷凍サイクル装置 |
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GB201705680D0 (en) | 2017-05-24 |
GB2545844A (en) | 2017-06-28 |
JPWO2016059706A1 (ja) | 2017-04-27 |
US10113896B2 (en) | 2018-10-30 |
GB2545844B (en) | 2021-05-19 |
JP6161832B2 (ja) | 2017-07-12 |
US20170211960A1 (en) | 2017-07-27 |
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