EP2407736A1 - Heat pump device - Google Patents
Heat pump device Download PDFInfo
- Publication number
- EP2407736A1 EP2407736A1 EP10750810A EP10750810A EP2407736A1 EP 2407736 A1 EP2407736 A1 EP 2407736A1 EP 10750810 A EP10750810 A EP 10750810A EP 10750810 A EP10750810 A EP 10750810A EP 2407736 A1 EP2407736 A1 EP 2407736A1
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- EP
- European Patent Office
- Prior art keywords
- refrigerant
- evaporator
- condenser
- heat pump
- pump apparatus
- Prior art date
- Legal status (The legal status 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 status listed.)
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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
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
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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
- F25B43/02—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant
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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
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- F25B1/04—Compression machines, plants or systems with non-reversible cycle with compressor of rotary type
- F25B1/053—Compression machines, plants or systems with non-reversible cycle with compressor of rotary type of turbine type
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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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/006—General constructional features for mounting refrigerating machinery components
Definitions
- the present invention relates to a heat pump apparatus, in particular, to a heat pump apparatus employing a centrifugal chiller.
- a shell-and-tube heat exchanger for example, has been employed as a heat exchanger for a centrifugal chiller employed in a heat pump apparatus.
- a compressor is typically disposed at a top portion of the heat exchanger or at a side surface thereof (for example, see Patent Literature 1).
- a shell-and-tube heat exchanger typically is a cylindrical container, which is known to be an advantageous shape for reducing the wall thickness thereof, as a container for storing a high-pressure refrigerant.
- the present invention has been conceived in light of the above-described circumstances, and an object thereof is to provide a heat pump apparatus that is capable of suppressing an increase in the installation area therefor and the volume thereof.
- a heat-pump apparatus of the present invention is a heat pump provided with a compressor that compresses refrigerant; a condenser that liquefies the compressed refrigerant; and an evaporator that evaporates the liquefied refrigerant, wherein the condenser and the evaporator are plate-type heat exchangers.
- the plate-type heat exchangers that can be formed in a rectangular cuboid shape, it becomes less likely that a gap is formed between the condenser and the evaporator and other components, when arranging the other components of the heat pump apparatus. Because of this, it is possible to suppress an increase in the installation area for and volume of the heat pump apparatus.
- a controller that controls driving of the centrifugal compressor; an oil separator that separates refrigerant discharged from the centrifugal compressor from lubricating oil; and a gas-liquid separator into which the refrigerant that has flowed out from the evaporator flows, that separates gas refrigerant and liquid refrigerant, and that supplies the evaporator only with the gas refrigerant, wherein the condenser and the evaporator are disposed next to each other, and the oil separator is disposed on the same plane as the condenser and the evaporator; the controller is disposed above one of the condenser and the evaporator; the gas-liquid separator is disposed above the other one of the condenser and the evaporator; and the centrifugal compressor is disposed above the oil separator.
- the gas-liquid separator above the other one of the condenser and the evaporator, the refrigerant inside the gas-liquid separator flows into the evaporator when the heat pump apparatus is stopped; therefore, it is possible to prevent the refrigerant from accumulating in the gas-liquid separator.
- the centrifugal compressor By disposing the centrifugal compressor above the oil separator, in other words, by disposing the oil separator below the centrifugal compressor, the refrigerant inside the centrifugal compressor flows into the oil separator when the heat pump apparatus is stopped; therefore, it is possible to prevent the refrigerant from accumulating in the centrifugal compressor.
- FIG. 1 is a schematic diagram for explaining the circuit configuration in a heat pump apparatus according to this embodiment.
- a heat pump apparatus 1 is formed in a substantially rectangular cuboid shape and provides hot water by receiving a heat-source water supply.
- the heat pump 1 is mainly provided with a condenser 2, an expansion valve 3, an evaporator 4, a centrifugal compressor 5, an inverter (controller) 6, an oil-mist separating tank (oil separator) 7, and an oil tank 8.
- Fig. 2 is a front view for explaining the internal arrangement of the heat pump apparatus in Fig. 1 .
- Fig. 3 is a right side view for explaining the internal arrangement of the heat pump apparatus in Fig. 2 .
- Fig. 4 is a left side view for explaining the internal arrangement of the heat pump apparatus in Fig. 2 .
- Fig. 5 is a top view for explaining the internal arrangement of the heat pump apparatus in Fig. 2 .
- Fig. 6 is a back view for explaining the internal arrangement of the heat pump apparatus in Fig. 2 .
- the condenser 2 is a plate-type heat exchanger formed in a substantially rectangular cuboid shape and condenses a high-temperature, high-pressure refrigerant discharged from the centrifugal compressor 5.
- the condenser 2 performs heat exchange between the refrigerant and hot water to liquefy the refrigerant as well as to heat the hot water.
- One end portion of the condenser 2 is connected to a discharge port of the centrifugal compressor 5 via the oil-mist separating tank 7 in a manner that allows the refrigerant to flow in communication therewith, and the other end portion thereof is connected to the expansion valve 3 via an economizer 9 in a manner that allows the refrigerant to flow in communication therewith.
- the condenser 2 is disposed at an end portion on the back side (right side in Fig. 3 ) at one end side (left end portion in Fig. 6 ) of a rectangularly formed base portion F1 in a longitudinal direction (left-right direction in Fig. 6 ) and is disposed next to the evaporator 4.
- the condenser 2 is disposed at a position that is above the base portion F1, below the accumulator 10, and next to the oil-mist separating tank 7 in the longitudinal direction described above and is disposed at a position that is next to the evaporator 4 in a direction perpendicular to the longitudinal direction.
- a hot-water inlet 21 into which hot water that has not yet been heated at the condenser 2 flows is provided at the bottom thereof, and a hot-water outlet 22 from which hot water that has been heated at the condenser 2 flows out is provided at the top thereof.
- the economizer 9 is a heat exchanger formed in a substantially circular-columnar shape that further cools the refrigerant that has flowed out from the condenser 2.
- One end portion of the economizer 9 is connected to the condenser 2 in a manner that allows the refrigerant to flow in communication therewith, and the other end portion thereof is connected to the expansion valve 3 in a manner that allows the refrigerant to flow in communication therewith.
- the economizer 9 is disposed at an end portion on the front side (left side in Fig. 3 ) at one end portion (right end portion in Fig. 2 ) of the heat pump apparatus 1 at its middle section.
- the economizer 9 is disposed at a position that is above the evaporator 4, below the inverter 6, next to an oil tank 8 in a longitudinal direction, and next to the accumulator 10 in a direction perpendicular to the longitudinal direction.
- the expansion valve 3 is a valve that causes the refrigerant supplied from the condenser 2 via the economizer 9 to adiabatically expand, thereby lowering the pressure thereof.
- One end portion of the expansion valve 3 is connected to the economizer 9 in a manner that allows the refrigerant to flow in communication therewith, and the other end portion thereof is connected to the evaporator 4 in a manner that allows the refrigerant to flow in communication therewith.
- a known unit may be employed as the expansion valve 3; it is not particularly limited.
- the evaporator 4 is a plate-type heat exchanger formed in a substantially rectangular cuboid shape and evaporates the refrigerant that has been adiabatically expanded by the expansion valve 3. In other words, by performing heat exchange between the refrigerant and heat-source water, the evaporator 4 gasifies the refrigerant by giving the heat of the heat-source water to the refrigerant.
- One end portion of the evaporator 4 is connected to the expansion valve 3 in a manner that allows the refrigerant to flow in communication therewith, and the other end portion thereof is connected to an intake port of the centrifugal compressor 5 via the accumulator (gas-liquid separator) 10.
- the evaporator 4 is disposed on an end portion on the front side (left side in Fig. 3 ) at one end side (right end portion in Fig. 2 ) of the rectangularly formed base portion F1 in a longitudinal direction (left-right direction in Fig. 2 ) and is disposed next to the condenser 2. Furthermore, the evaporator 4 is disposed closer to the center of the heat pump apparatus 1 (closer to left end in Fig. 2 ) as compared with the condenser 2.
- the evaporator 2 is disposed at a position that is above the base portion F1, below the economizer 9, next to an control panel 11 in the longitudinal direction, and next to the condenser 2 and the oil-mist separating tank 7 in a direction perpendicular to the longitudinal direction.
- a heat-source-water inlet 41 into which heat-source water whose heat has not yet been absorbed at the evaporator 4 flows is provided at the top thereof, and a heat-source-water outlet 42 from which heat-source water whose heat has been absorbed at the evaporator 4 flows out is provided at the bottom thereof.
- the control panel 11 is where control devices for controlling various devices in the heat pump apparatus 1 are integrated and has a substantially rectangular cuboid housing in which the control devices, etc. are accommodated. As shown in Figs. 2 , 4 , and 6 , the control panel 11 is disposed at the other end portion (left end portion in Fig. 2 ) of the rectangularly formed base portion F1 in the longitudinal direction.
- control panel 11 is disposed at a position that is above the base portion F1, below the oil tank 8, and next to the evaporator 4 and the oil-mist separating tank 7 in the longitudinal direction. With such an arrangement, it is possible to dispose the control panel 11 at a position where hot air in the heat pump apparatus 1 does not accumulate.
- the accumulator 10 is formed in a substantially circular-columnar shape and separates liquid refrigerant and gas refrigerant contained in the refrigerant that has flowed out from the evaporator 4 to supply the centrifugal compressor 5 only with the gas refrigerant.
- One end portion of the accumulator 10 is connected to the evaporator 4 in a manner that allows the refrigerant to flow in communication therewith, and the other end portion thereof is connected to the centrifugal compressor 5 in a manner that allows the refrigerant to flow in communication therewith.
- the accumulator 10 is disposed at one end portion (left end portion in Fig. 6 ) of a position extending over the top portion (top portion in Fig. 6 ) and the middle portion of the heat pump apparatus 1 on the back side (top side in Fig. 5 ) thereof.
- the accumulator 10 is disposed at a position that is above the condenser 2, next to the centrifugal compressor 5 in the longitudinal direction, and next to the economizer 9 and the inverter 6 in the direction perpendicular to the longitudinal direction.
- a known unit may be used as the accumulator 10; it is not particularly limited.
- the centrifugal compressor 5 takes in the refrigerant that has been gasified at the evaporator 4 via the accumulator 10 and discharges it into the condenser 2 via the oil-mist separating tank 7 after compressing it.
- the intake port thereof into which the refrigerant flows is connected to the evaporator 4 via the accumulator 10
- the discharge port thereof from which the refrigerant flows out is connected to the condenser 2 via the oil-mist separating tank 7.
- the centrifugal compressor 5 is integrally configured with an electric motor 51 that supplies a rotational driving force, and power supplied from the inverter 6 rotationally drives the electric motor 51 and controls the rotational speed thereof.
- the centrifugal compressor 5 and the electric motor 51 are disposed at the other end portion (right end portion in Fig. 6 ) at the top portion (top portion in Fig. 6 ) of the heat pump apparatus 1 on the back side (top side in Fig. 5 ) thereof.
- centrifugal compressor 5 and the electric motor 51 are disposed at positions that are above the oil-mist separating tank 7 and the oil tank 8 and that are next to the inverter 6 in the longitudinal direction.
- known units may be employed as the centrifugal compressor 5 and the electric motor 51; they are not particularly limited.
- the invert 6 supplies power to the electric motor 51, controls the rotational speed of the electric motor 51, and has a housing formed in a substantially rectangular cuboid shape. As shown in Figs. 2 to 5 , the inverter 6 is disposed at one end portion (right side portion in Fig. 2 ) at the top portion (top portion in Fig. 2 ) of the heat pump apparatus 1 on the front side (bottom side in Fig. 5 ) thereof.
- the inverter 6 is disposed at a position that is above the economizer 9 and next to the accumulator 10, the centrifugal compressor 5, and the electric motor 51 in the direction perpendicular to the longitudinal direction.
- a known unit may be employed as the inverter 6; it is not particularly limited.
- the oil-mist separating tank 7 is formed in a substantially circular-columnar shape and separates lubricating oil and lubricating oil mist contained in the refrigerant discharged from the centrifugal compressor 5 from the refrigerant.
- One end portion of the oil-mist separating tank 7 is connected to the discharge port of the centrifugal compressor 5 in a manner that allows the refrigerant to flow in communication therewith, and the other end portion thereof is connected to the condenser 2. Furthermore, the oil-mist separating tank 7 supplies the lubricating oil separated from the refrigerant to the oil tank 8.
- the oil-mist separating tank 7 is disposed at an end portion on the back side at the other end portion (right end portion in Fig. 6 ) of the base portion F1.
- the oil-mist separating tank 7 is disposed at a position that is above the base portion F1, below the centrifugal compressor 5 and the electric motor 51, and next to the evaporator 4 in the direction perpendicular to the longitudinal direction.
- a known unit may be used as the oil-mist separating tank 7; it is not particularly limited.
- the oil tank 8 is formed in a substantially circular-columnar shape, stores the lubricating oil used to lubricate the centrifugal compressor 5, supplies the lubricating oil to the centrifugal compressor 5, and is where the lubricating oil discharged from the centrifugal compressor 5 flows into.
- the oil tank 8 is connected to the centrifugal compressor 5 so that the lubricating oil can be supplied thereto and received therefrom and is connected the oil-mist separating tank 7 so that the lubricating oil is supplied therefrom.
- the oil tank 8 is disposed at the other end portion (left end portion in Fig. 2 ) at the middle section of the heat pump apparatus 1.
- the oil tank 8 is disposed at a position that is above the control panel 11, below the electric motor 51, and next to the economizer 9 in the longitudinal direction.
- the heat pump apparatus 1 is provided with the base portion F1, vertical main frames F2, horizontal main frames F3, vertical sub-frames F4, and horizontal sub-frames F5 for supporting the condenser 2, the evaporator 4, the centrifugal compressor 5, the inverter 6, and so on.
- the base portion F1 is a member that supports all other components that constitute the heat pump apparatus 1 in which rod-like members formed of metal are combined into a substantially rectangular shape. As shown in Figs. 2 to 6 , the condenser 2, the evaporator 4, the oil-mist separating tank 7, and the control panel 11 are disposed at a top surface of the base portion F1, and a plurality of the vertical main frames F2 and the vertical sub-frames F4 are mounted thereto.
- the vertical main frames F2 are rod-like members that extend from the base portion F1 to the top end of the heat pump apparatus 1 and that support other components together with the horizontal main frames F3 and the base portion F1, when the heat pump apparatus 1 is hoisted. As shown in Figs. 2 to 6 , two vertical main frames F2 each are disposed at pair of long sides at positions separated from the center of each long side by a predetermined distance. In addition, each of the four vertical main frames F2 is provided with a hoisting lug 12 at the top end thereof.
- the horizontal main frames F3 are rod-like members that extend between the vertical main frames F2 along short sides of the base portion F1 and that connect the vertical main frames F2 disposed at one long side and the vertical main frames F2 disposed at the other long side.
- the horizontal main frames F3 constitute ladder-like structures together with the vertical main frames F2.
- the horizontal main frames F3, together with the vertical main frames F2 support the inverter 6, the centrifugal compressor 5, the electric motor 51, and the oil tank 8.
- two horizontal main frames F3 are disposed between the vertical main frames F2 disposed at one long side and the vertical main frames F2 disposed at the other long side. That is, four horizontal main frames F3 are provided in the heat pump apparatus 1 as a whole.
- the upper horizontal main frames F3 are disposed below the inverter 6, the centrifugal compressor 5, and the electric motor 51, and above the economizer 9.
- the lower horizontal main frames F3 are disposed below the economizer 9 and above the evaporator 4 and the condenser 2.
- the vertical sub-frames F4 together with the horizontal sub-frames F5, support the accumulator 10, the economizer 9, and so on.
- the vertical sub-frames F4 are rod-like members that extend upward from the base portion F1 and that extend up to a space above the condenser 2 and the evaporator 4 and below the accumulator 10 and the economizer 9.
- the vertical sub-frames F4 are rod-like members that extend in a direction substantially perpendicular to the vertical sub-frames F4 and that are disposed at a space above the condenser 2 and the evaporator 4 and below the accumulator 10 and the economizer 9.
- Fig. 7 is a front view for explaining the external appearance of the heat pump apparatus in Fig. 1 .
- Fig. 8 is a right side view for explaining the external appearance of the heat pump apparatus in Fig. 7 .
- Fig. 9 is a left side view for explaining the external appearance of the heat pump apparatus in Fig. 7 .
- Fig. 10 is a top view for explaining the external appearance of the heat pump apparatus in Fig. 7 .
- the heat pump apparatus 1 is provided with outer plates 13 that internally accommodate the condenser 2, the evaporator 4, the centrifugal compressor 5, the vertical main frames F2, the horizontal main frames F3, the vertical sub-frames F4, the horizontal sub-frames F5, and so on.
- the hoisting lugs 12 used when transporting the heat pump apparatus 1 are externally exposed at the top portion of the heat pump apparatus 1.
- the hoisting lugs 12 are members that are fixed to the top ends of the vertical main frames F2, and the force that acts on the hoisting lugs 12 when the heat pump apparatus 1 is hoisted is transmitted to the horizontal main frames F3 and the base portion F1 via the vertical main frames F2.
- the heat-source-water inlet 41, the heat-source-water outlet 42, the hot-water inlet 21, and the hot-water outlet 22 externally protrude at the bottom of one end portion (right end portion in Fig. 7 ) of the heat pump apparatus 1.
- a power unit 14 to which power is externally supplied is disposed at the top of the one end portion.
- the power supplied to the power unit 14 is used to operate the heat pump apparatus 1 and is supplied, in particular, to the electric motor 51 via the inverter 6.
- control panel 11 is externally exposed at the bottom of the other end portion (left end portion in Fig. 7 ) of the heat pump apparatus 1.
- a high-temperature, high-pressure gas refrigerant compressed at the centrifugal compressor 5 is discharged from the discharge port of the centrifugal compressor 5 and flows into the oil-mist separating tank 7.
- lubricating oil mist contained in the refrigerant is separated from the refrigerant.
- the refrigerant from which the lubricating oil mist has been separated flows into the condenser 2 from the oil-mist separating tank 7.
- heat exchange is performed between the high-temperature refrigerant and externally supplied hot water of, for example, about 75 °C.
- the hot water turns into hot water of, for example, about 80 °C upon absorbing heat from the high-temperature refrigerant and flows out from the condenser 2 to the outside.
- the refrigerant liquefied at the condenser 2 flows out from the condenser 2 to flow into the economizer 9.
- part of the refrigerant that has flowed thereinto is diverted and adiabatically expanded to generate low-temperature, low-pressure refrigerant.
- heat exchange is performed between the diverted low-temperature refrigerant and the rest of the refrigerant to further cool the rest of the refrigerant.
- the diverted refrigerant flows into the intake port of the centrifugal compressor 5.
- the refrigerant cooled at the economizer 9 flows toward the expansion valve 3, is adiabatically expanded when passing through the expansion valve 3, and turns into a low-temperature, low-pressure liquid refrigerant.
- the adiabatically expanded refrigerant flows into the evaporator 4.
- heat exchange is performed between the low-temperature refrigerant and externally supplied heat-source water of, for example, about 45 °C.
- the low-temperature refrigerant evaporates, thus being gasified.
- the heat-source water turns into heat-source water of, for example, about 40 °C upon releasing heat to the low-temperature refrigerant and flows out from the evaporator 4 to the outside.
- the evaporated gas refrigerant flows into the accumulator 10 from the evaporator 4.
- liquid refrigerant that has flowed out from the evaporator 4 together with the gas refrigerant is separated from the gas refrigerant, and only the gas refrigerant flows out from the accumulator 10.
- the gas refrigerant from which the liquid refrigerant has been separated at the accumulator 10 flows into the intake port of the centrifugal compressor 5, is compressed by the centrifugal compressor 5, and is discharged again from the discharge port thereof as a high-pressure refrigerant, and thus the above-described cycle is repeated.
- the lubricating oil is supplied to the centrifugal compressor 5 from the oil tank 8, and the lubricating oil is used for lubricating sliding parts in the centrifugal compressor 5.
- the lubricating oil that has been used for lubrication is returned to the oil tank 8 from the centrifugal compressor 5 and is supplied again to the centrifugal compressor 5 from the oil tank 8.
- part of the lubricating oil that has been used in the centrifugal compressor 5 for lubrication flows toward the oil-mist separating tank 7 together with the refrigerant.
- the lubricating oil that has flowed out is separated from the refrigerant at the oil-mist separating tank 7.
- the lubricating oil separated from the refrigerant is returned to the oil tank 8 from the oil-mist separating tank 7.
- the accumulator 10 Furthermore, by disposing the accumulator 10 above the condenser 2, the refrigerant that has accumulated inside the accumulator 10 flows into the evaporator 4 when the heat pump apparatus 1 is stopped; therefore, it is possible to prevent the refrigerant from accumulating in the accumulator 10.
- the centrifugal compressor 5 By disposing the centrifugal compressor 5 above the oil-mist separating tank 7, in other words, by disposing the oil-mist separating tank 7 below the centrifugal compressor 5, the refrigerant inside the centrifugal compressor 5 flows into the oil-mist separating tank 7 when the heat pump apparatus 1 is stopped; therefore, it is possible to prevent the refrigerant from accumulating in the centrifugal compressor 5.
Abstract
Description
- The present invention relates to a heat pump apparatus, in particular, to a heat pump apparatus employing a centrifugal chiller.
- A shell-and-tube heat exchanger, for example, has been employed as a heat exchanger for a centrifugal chiller employed in a heat pump apparatus. In addition, a compressor is typically disposed at a top portion of the heat exchanger or at a side surface thereof (for example, see Patent Literature 1).
- On the other hand, a shell-and-tube heat exchanger typically is a cylindrical container, which is known to be an advantageous shape for reducing the wall thickness thereof, as a container for storing a high-pressure refrigerant.
-
- {PTL 1} Japanese Unexamined Patent Application, Publication No.
2000-292011 - When considering an arrangement of components of a heat pump apparatus, however, an unusable space, that is, a gap, tends to form in the periphery of the cylindrical container. Because of this, there has been a problem in that the installation area required for and the volume of a heat pump apparatus tend to increase.
- The present invention has been conceived in light of the above-described circumstances, and an object thereof is to provide a heat pump apparatus that is capable of suppressing an increase in the installation area therefor and the volume thereof.
- In order to achieve the above-described object, the present invention employs the following solutions.
A heat-pump apparatus of the present invention is a heat pump provided with a compressor that compresses refrigerant; a condenser that liquefies the compressed refrigerant; and an evaporator that evaporates the liquefied refrigerant, wherein the condenser and the evaporator are plate-type heat exchangers. - According to the present invention, by employing the plate-type heat exchangers that can be formed in a rectangular cuboid shape, it becomes less likely that a gap is formed between the condenser and the evaporator and other components, when arranging the other components of the heat pump apparatus. Because of this, it is possible to suppress an increase in the installation area for and volume of the heat pump apparatus.
- In the above-described invention, it is desirable to provide a controller that controls driving of the centrifugal compressor; an oil separator that separates refrigerant discharged from the centrifugal compressor from lubricating oil; and a gas-liquid separator into which the refrigerant that has flowed out from the evaporator flows, that separates gas refrigerant and liquid refrigerant, and that supplies the evaporator only with the gas refrigerant, wherein the condenser and the evaporator are disposed next to each other, and the oil separator is disposed on the same plane as the condenser and the evaporator; the controller is disposed above one of the condenser and the evaporator; the gas-liquid separator is disposed above the other one of the condenser and the evaporator; and the centrifugal compressor is disposed above the oil separator.
- With this configuration, by placing the condenser and the evaporator, which have larger volumes compared with the other components, next to each other, it is possible to prevent an increase in the installation area for the heat pump apparatus.
- On the other hand, by disposing the controller above one of the condenser and the evaporator, it becomes easy to secure a flow path for air that cools the controller.
- Furthermore, by disposing the gas-liquid separator above the other one of the condenser and the evaporator, the refrigerant inside the gas-liquid separator flows into the evaporator when the heat pump apparatus is stopped; therefore, it is possible to prevent the refrigerant from accumulating in the gas-liquid separator.
- By disposing the centrifugal compressor above the oil separator, in other words, by disposing the oil separator below the centrifugal compressor, the refrigerant inside the centrifugal compressor flows into the oil separator when the heat pump apparatus is stopped; therefore, it is possible to prevent the refrigerant from accumulating in the centrifugal compressor.
- With the heat pump apparatus of the present invention, by employing plate-type heat exchangers that can be formed in rectangular cuboid shapes, an advantage is afforded in that it is possible to suppress an increase in an installation area therefor and volume thereof.
-
- {
Fig. 1} Fig. 1 is a schematic diagram for explaining the circuit configuration in a heat pump apparatus according to an embodiment of the present invention. - {
Fig. 2} Fig. 2 is a front view for explaining the internal arrangement of the heat pump apparatus inFig. 1 . - {
Fig. 3} Fig. 3 is a right side view for explaining the internal arrangement of the heat pump apparatus inFig. 2 . - {
Fig. 4} Fig. 4 is a left side view for explaining the internal arrangement of the heat pump apparatus inFig. 2 . - {
Fig. 5} Fig. 5 is a top view for explaining the internal arrangement of the heat pump apparatus inFig. 2 . - {
Fig. 6} Fig. 6 is a back view for explaining the internal arrangement of the heat pump apparatus inFig. 2 . - {
Fig. 7} Fig. 7 is a front view for explaining the external appearance of the heat pump apparatus inFig. 1 . - {
Fig. 8} Fig. 8 is a right side view for explaining the external appearance of the heat pump apparatus inFig. 7 . - {
Fig. 9} Fig. 9 is a left side view for explaining the external appearance of the heat pump apparatus inFig. 7 . - {
Fig. 10} Fig. 10 is a top view for explaining the external appearance of the heat pump apparatus inFig. 7 . - A heat pump apparatus according to an embodiment of the present invention will be described with reference to
Figs. 1 to 10 .
Fig. 1 is a schematic diagram for explaining the circuit configuration in a heat pump apparatus according to this embodiment.
Aheat pump apparatus 1 is formed in a substantially rectangular cuboid shape and provides hot water by receiving a heat-source water supply.
As shown inFig. 1 , theheat pump 1 is mainly provided with acondenser 2, anexpansion valve 3, anevaporator 4, acentrifugal compressor 5, an inverter (controller) 6, an oil-mist separating tank (oil separator) 7, and anoil tank 8. -
Fig. 2 is a front view for explaining the internal arrangement of the heat pump apparatus inFig. 1 .Fig. 3 is a right side view for explaining the internal arrangement of the heat pump apparatus inFig. 2 .Fig. 4 is a left side view for explaining the internal arrangement of the heat pump apparatus inFig. 2 .Fig. 5 is a top view for explaining the internal arrangement of the heat pump apparatus inFig. 2 .Fig. 6 is a back view for explaining the internal arrangement of the heat pump apparatus inFig. 2 . - The
condenser 2 is a plate-type heat exchanger formed in a substantially rectangular cuboid shape and condenses a high-temperature, high-pressure refrigerant discharged from thecentrifugal compressor 5. In other words, thecondenser 2 performs heat exchange between the refrigerant and hot water to liquefy the refrigerant as well as to heat the hot water. One end portion of thecondenser 2 is connected to a discharge port of thecentrifugal compressor 5 via the oil-mist separating tank 7 in a manner that allows the refrigerant to flow in communication therewith, and the other end portion thereof is connected to theexpansion valve 3 via aneconomizer 9 in a manner that allows the refrigerant to flow in communication therewith. - As shown in
Figs. 3 and6 , thecondenser 2 is disposed at an end portion on the back side (right side inFig. 3 ) at one end side (left end portion inFig. 6 ) of a rectangularly formed base portion F1 in a longitudinal direction (left-right direction inFig. 6 ) and is disposed next to theevaporator 4. - In other words, the
condenser 2 is disposed at a position that is above the base portion F1, below theaccumulator 10, and next to the oil-mist separatingtank 7 in the longitudinal direction described above and is disposed at a position that is next to theevaporator 4 in a direction perpendicular to the longitudinal direction. - At a side surface at one end portion of the
condenser 2, a hot-water inlet 21 into which hot water that has not yet been heated at thecondenser 2 flows is provided at the bottom thereof, and a hot-water outlet 22 from which hot water that has been heated at thecondenser 2 flows out is provided at the top thereof. - The
economizer 9 is a heat exchanger formed in a substantially circular-columnar shape that further cools the refrigerant that has flowed out from thecondenser 2. One end portion of theeconomizer 9 is connected to thecondenser 2 in a manner that allows the refrigerant to flow in communication therewith, and the other end portion thereof is connected to theexpansion valve 3 in a manner that allows the refrigerant to flow in communication therewith. - This embodiment will be described as applied to an example in which the
economizer 9 performs heat exchange between the refrigerant to be supplied to theexpansion valve 3 and a low-temperature, low-pressure refrigerant obtained by adiabatically expanding part of the refrigerant that has flowed out from thecondenser 2. In this case, the refrigerant used to cool theexpansion valve 3 flows into thecentrifugal compressor 5.
Note that a known configuration may be employed for the configuration of theeconomizer 9; it is not particularly limited. - As shown in
Figs. 2 to 5 , theeconomizer 9 is disposed at an end portion on the front side (left side inFig. 3 ) at one end portion (right end portion inFig. 2 ) of theheat pump apparatus 1 at its middle section. - In other words, the
economizer 9 is disposed at a position that is above theevaporator 4, below theinverter 6, next to anoil tank 8 in a longitudinal direction, and next to theaccumulator 10 in a direction perpendicular to the longitudinal direction. - With such an arrangement, by disposing the
economizer 9 above theevaporator 4, the refrigerant inside theeconomizer 9 flows into theevaporator 4 when theheat pump apparatus 1 is stopped; therefore, it is possible to prevent the refrigerant from accumulating in theeconomizer 9. - The
expansion valve 3 is a valve that causes the refrigerant supplied from thecondenser 2 via theeconomizer 9 to adiabatically expand, thereby lowering the pressure thereof. One end portion of theexpansion valve 3 is connected to theeconomizer 9 in a manner that allows the refrigerant to flow in communication therewith, and the other end portion thereof is connected to theevaporator 4 in a manner that allows the refrigerant to flow in communication therewith.
Note that a known unit may be employed as theexpansion valve 3; it is not particularly limited. - The
evaporator 4 is a plate-type heat exchanger formed in a substantially rectangular cuboid shape and evaporates the refrigerant that has been adiabatically expanded by theexpansion valve 3. In other words, by performing heat exchange between the refrigerant and heat-source water, theevaporator 4 gasifies the refrigerant by giving the heat of the heat-source water to the refrigerant. One end portion of theevaporator 4 is connected to theexpansion valve 3 in a manner that allows the refrigerant to flow in communication therewith, and the other end portion thereof is connected to an intake port of thecentrifugal compressor 5 via the accumulator (gas-liquid separator) 10. - As shown in
Figs. 2 and3 , theevaporator 4 is disposed on an end portion on the front side (left side inFig. 3 ) at one end side (right end portion inFig. 2 ) of the rectangularly formed base portion F1 in a longitudinal direction (left-right direction inFig. 2 ) and is disposed next to thecondenser 2. Furthermore, theevaporator 4 is disposed closer to the center of the heat pump apparatus 1 (closer to left end inFig. 2 ) as compared with thecondenser 2. - In other words, the
evaporator 2 is disposed at a position that is above the base portion F1, below theeconomizer 9, next to ancontrol panel 11 in the longitudinal direction, and next to thecondenser 2 and the oil-mist separating tank 7 in a direction perpendicular to the longitudinal direction. - At a side surface at one end portion of the
evaporator 4, a heat-source-water inlet 41 into which heat-source water whose heat has not yet been absorbed at theevaporator 4 flows is provided at the top thereof, and a heat-source-water outlet 42 from which heat-source water whose heat has been absorbed at theevaporator 4 flows out is provided at the bottom thereof. - The
control panel 11 is where control devices for controlling various devices in theheat pump apparatus 1 are integrated and has a substantially rectangular cuboid housing in which the control devices, etc. are accommodated.
As shown inFigs. 2 ,4 , and6 , thecontrol panel 11 is disposed at the other end portion (left end portion inFig. 2 ) of the rectangularly formed base portion F1 in the longitudinal direction. - In other words, the
control panel 11 is disposed at a position that is above the base portion F1, below theoil tank 8, and next to theevaporator 4 and the oil-mist separating tank 7 in the longitudinal direction.
With such an arrangement, it is possible to dispose thecontrol panel 11 at a position where hot air in theheat pump apparatus 1 does not accumulate. - The
accumulator 10 is formed in a substantially circular-columnar shape and separates liquid refrigerant and gas refrigerant contained in the refrigerant that has flowed out from theevaporator 4 to supply thecentrifugal compressor 5 only with the gas refrigerant. One end portion of theaccumulator 10 is connected to theevaporator 4 in a manner that allows the refrigerant to flow in communication therewith, and the other end portion thereof is connected to thecentrifugal compressor 5 in a manner that allows the refrigerant to flow in communication therewith. - As shown in
Figs. 3 ,5 , and6 , theaccumulator 10 is disposed at one end portion (left end portion inFig. 6 ) of a position extending over the top portion (top portion inFig. 6 ) and the middle portion of theheat pump apparatus 1 on the back side (top side inFig. 5 ) thereof. - In other words, the
accumulator 10 is disposed at a position that is above thecondenser 2, next to thecentrifugal compressor 5 in the longitudinal direction, and next to theeconomizer 9 and theinverter 6 in the direction perpendicular to the longitudinal direction.
Note that a known unit may be used as theaccumulator 10; it is not particularly limited. - The
centrifugal compressor 5 takes in the refrigerant that has been gasified at theevaporator 4 via theaccumulator 10 and discharges it into thecondenser 2 via the oil-mist separating tank 7 after compressing it. In thecentrifugal compressor 5, the intake port thereof into which the refrigerant flows is connected to theevaporator 4 via theaccumulator 10, and the discharge port thereof from which the refrigerant flows out is connected to thecondenser 2 via the oil-mist separating tank 7. - The
centrifugal compressor 5 is integrally configured with anelectric motor 51 that supplies a rotational driving force, and power supplied from theinverter 6 rotationally drives theelectric motor 51 and controls the rotational speed thereof. - As shown in
Figs. 4 to 6 , thecentrifugal compressor 5 and theelectric motor 51 are disposed at the other end portion (right end portion inFig. 6 ) at the top portion (top portion inFig. 6 ) of theheat pump apparatus 1 on the back side (top side inFig. 5 ) thereof. - In other words, the
centrifugal compressor 5 and theelectric motor 51 are disposed at positions that are above the oil-mist separating tank 7 and theoil tank 8 and that are next to theinverter 6 in the longitudinal direction.
Note that known units may be employed as thecentrifugal compressor 5 and theelectric motor 51; they are not particularly limited. - The
invert 6 supplies power to theelectric motor 51, controls the rotational speed of theelectric motor 51, and has a housing formed in a substantially rectangular cuboid shape.
As shown inFigs. 2 to 5 , theinverter 6 is disposed at one end portion (right side portion inFig. 2 ) at the top portion (top portion inFig. 2 ) of theheat pump apparatus 1 on the front side (bottom side inFig. 5 ) thereof. - In other words, the
inverter 6 is disposed at a position that is above theeconomizer 9 and next to theaccumulator 10, thecentrifugal compressor 5, and theelectric motor 51 in the direction perpendicular to the longitudinal direction.
Note that a known unit may be employed as theinverter 6; it is not particularly limited. - The oil-
mist separating tank 7 is formed in a substantially circular-columnar shape and separates lubricating oil and lubricating oil mist contained in the refrigerant discharged from thecentrifugal compressor 5 from the refrigerant. One end portion of the oil-mist separating tank 7 is connected to the discharge port of thecentrifugal compressor 5 in a manner that allows the refrigerant to flow in communication therewith, and the other end portion thereof is connected to thecondenser 2.
Furthermore, the oil-mist separating tank 7 supplies the lubricating oil separated from the refrigerant to theoil tank 8. - As shown in
Fig. 6 , the oil-mist separating tank 7 is disposed at an end portion on the back side at the other end portion (right end portion inFig. 6 ) of the base portion F1. - In other words, the oil-
mist separating tank 7 is disposed at a position that is above the base portion F1, below thecentrifugal compressor 5 and theelectric motor 51, and next to theevaporator 4 in the direction perpendicular to the longitudinal direction.
Note that a known unit may be used as the oil-mist separating tank 7; it is not particularly limited. - The
oil tank 8 is formed in a substantially circular-columnar shape, stores the lubricating oil used to lubricate thecentrifugal compressor 5, supplies the lubricating oil to thecentrifugal compressor 5, and is where the lubricating oil discharged from thecentrifugal compressor 5 flows into. Theoil tank 8 is connected to thecentrifugal compressor 5 so that the lubricating oil can be supplied thereto and received therefrom and is connected the oil-mist separating tank 7 so that the lubricating oil is supplied therefrom. - As shown in
Fig. 2 andFigs. 4 to 6 , theoil tank 8 is disposed at the other end portion (left end portion inFig. 2 ) at the middle section of theheat pump apparatus 1.
In other words, theoil tank 8 is disposed at a position that is above thecontrol panel 11, below theelectric motor 51, and next to theeconomizer 9 in the longitudinal direction.
With such an arrangement, it is possible to make it easy for the lubricating oil to return to theoil tank 8 from thecentrifugal compressor 5. - Furthermore, as shown in
Figs. 2 to 6 , theheat pump apparatus 1 is provided with the base portion F1, vertical main frames F2, horizontal main frames F3, vertical sub-frames F4, and horizontal sub-frames F5 for supporting thecondenser 2, theevaporator 4, thecentrifugal compressor 5, theinverter 6, and so on. - The base portion F1 is a member that supports all other components that constitute the
heat pump apparatus 1 in which rod-like members formed of metal are combined into a substantially rectangular shape.
As shown inFigs. 2 to 6 , thecondenser 2, theevaporator 4, the oil-mist separating tank 7, and thecontrol panel 11 are disposed at a top surface of the base portion F1, and a plurality of the vertical main frames F2 and the vertical sub-frames F4 are mounted thereto. - The vertical main frames F2 are rod-like members that extend from the base portion F1 to the top end of the
heat pump apparatus 1 and that support other components together with the horizontal main frames F3 and the base portion F1, when theheat pump apparatus 1 is hoisted.
As shown inFigs. 2 to 6 , two vertical main frames F2 each are disposed at pair of long sides at positions separated from the center of each long side by a predetermined distance.
In addition, each of the four vertical main frames F2 is provided with a hoistinglug 12 at the top end thereof. - The horizontal main frames F3 are rod-like members that extend between the vertical main frames F2 along short sides of the base portion F1 and that connect the vertical main frames F2 disposed at one long side and the vertical main frames F2 disposed at the other long side. In other words, the horizontal main frames F3 constitute ladder-like structures together with the vertical main frames F2.
Furthermore, the horizontal main frames F3, together with the vertical main frames F2, support theinverter 6, thecentrifugal compressor 5, theelectric motor 51, and theoil tank 8. - More specifically, two horizontal main frames F3 are disposed between the vertical main frames F2 disposed at one long side and the vertical main frames F2 disposed at the other long side. That is, four horizontal main frames F3 are provided in the
heat pump apparatus 1 as a whole. - The upper horizontal main frames F3 are disposed below the
inverter 6, thecentrifugal compressor 5, and theelectric motor 51, and above theeconomizer 9. The lower horizontal main frames F3 are disposed below theeconomizer 9 and above theevaporator 4 and thecondenser 2. - The vertical sub-frames F4, together with the horizontal sub-frames F5, support the
accumulator 10, theeconomizer 9, and so on. The vertical sub-frames F4 are rod-like members that extend upward from the base portion F1 and that extend up to a space above thecondenser 2 and theevaporator 4 and below theaccumulator 10 and theeconomizer 9. - The horizontal sub-frames F5, together with the vertical sub-frames F4, support the
accumulator 10, theeconomizer 9, and so on. The vertical sub-frames F4 are rod-like members that extend in a direction substantially perpendicular to the vertical sub-frames F4 and that are disposed at a space above thecondenser 2 and theevaporator 4 and below theaccumulator 10 and theeconomizer 9. -
Fig. 7 is a front view for explaining the external appearance of the heat pump apparatus inFig. 1 .Fig. 8 is a right side view for explaining the external appearance of the heat pump apparatus inFig. 7 .Fig. 9 is a left side view for explaining the external appearance of the heat pump apparatus inFig. 7 .Fig. 10 is a top view for explaining the external appearance of the heat pump apparatus inFig. 7 . - Furthermore, as shown in
Figs. 7 to 10 , theheat pump apparatus 1 is provided withouter plates 13 that internally accommodate thecondenser 2, theevaporator 4, thecentrifugal compressor 5, the vertical main frames F2, the horizontal main frames F3, the vertical sub-frames F4, the horizontal sub-frames F5, and so on. - As shown in
Figs. 7 to 9 , the hoisting lugs 12 used when transporting theheat pump apparatus 1 are externally exposed at the top portion of theheat pump apparatus 1. The hoisting lugs 12 are members that are fixed to the top ends of the vertical main frames F2, and the force that acts on the hoisting lugs 12 when theheat pump apparatus 1 is hoisted is transmitted to the horizontal main frames F3 and the base portion F1 via the vertical main frames F2. - On the other hand, as shown in
Figs. 7 ,8 , and10 , the heat-source-water inlet 41, the heat-source-water outlet 42, the hot-water inlet 21, and the hot-water outlet 22 externally protrude at the bottom of one end portion (right end portion inFig. 7 ) of theheat pump apparatus 1. - Furthermore, a
power unit 14 to which power is externally supplied is disposed at the top of the one end portion. The power supplied to thepower unit 14 is used to operate theheat pump apparatus 1 and is supplied, in particular, to theelectric motor 51 via theinverter 6. - On the other hand, as shown in
Fig. 9 , thecontrol panel 11 is externally exposed at the bottom of the other end portion (left end portion inFig. 7 ) of theheat pump apparatus 1. - Next, supplying of hot water with a heat pump apparatus having the above-described configuration will be described with reference to
Fig. 1 and so on.
When supplying hot water from theheat pump apparatus 1, power is externally supplied to theinverter 6, and theelectric motor 51 is rotationally driven by theinverter 6, thereby causing thecentrifugal compressor 5 to compress refrigerant. - A high-temperature, high-pressure gas refrigerant compressed at the
centrifugal compressor 5 is discharged from the discharge port of thecentrifugal compressor 5 and flows into the oil-mist separating tank 7. At the oil-mist separating tank 7, lubricating oil mist contained in the refrigerant is separated from the refrigerant. The refrigerant from which the lubricating oil mist has been separated flows into thecondenser 2 from the oil-mist separating tank 7. - At the
condenser 2, heat exchange is performed between the high-temperature refrigerant and externally supplied hot water of, for example, about 75 °C. By releasing heat to the hot water, the high-temperature refrigerant is condensed, thus being liquefied. On the other hand, the hot water turns into hot water of, for example, about 80 °C upon absorbing heat from the high-temperature refrigerant and flows out from thecondenser 2 to the outside. - The refrigerant liquefied at the
condenser 2 flows out from thecondenser 2 to flow into theeconomizer 9. At theeconomizer 9, part of the refrigerant that has flowed thereinto is diverted and adiabatically expanded to generate low-temperature, low-pressure refrigerant. Then, heat exchange is performed between the diverted low-temperature refrigerant and the rest of the refrigerant to further cool the rest of the refrigerant.
After being used for cooling the rest of the refrigerant, the diverted refrigerant flows into the intake port of thecentrifugal compressor 5. - The refrigerant cooled at the
economizer 9 flows toward theexpansion valve 3, is adiabatically expanded when passing through theexpansion valve 3, and turns into a low-temperature, low-pressure liquid refrigerant. The adiabatically expanded refrigerant flows into theevaporator 4. - At the
evaporator 4, heat exchange is performed between the low-temperature refrigerant and externally supplied heat-source water of, for example, about 45 °C. By absorbing heat from the heat-source water, the low-temperature refrigerant evaporates, thus being gasified. On the other hand, the heat-source water turns into heat-source water of, for example, about 40 °C upon releasing heat to the low-temperature refrigerant and flows out from theevaporator 4 to the outside. - The evaporated gas refrigerant flows into the
accumulator 10 from theevaporator 4. At theaccumulator 10, liquid refrigerant that has flowed out from theevaporator 4 together with the gas refrigerant is separated from the gas refrigerant, and only the gas refrigerant flows out from theaccumulator 10. - The gas refrigerant from which the liquid refrigerant has been separated at the
accumulator 10 flows into the intake port of thecentrifugal compressor 5, is compressed by thecentrifugal compressor 5, and is discharged again from the discharge port thereof as a high-pressure refrigerant, and thus the above-described cycle is repeated. - On the other hand, the lubricating oil is supplied to the
centrifugal compressor 5 from theoil tank 8, and the lubricating oil is used for lubricating sliding parts in thecentrifugal compressor 5. The lubricating oil that has been used for lubrication is returned to theoil tank 8 from thecentrifugal compressor 5 and is supplied again to thecentrifugal compressor 5 from theoil tank 8. - Here, part of the lubricating oil that has been used in the
centrifugal compressor 5 for lubrication flows toward the oil-mist separating tank 7 together with the refrigerant. The lubricating oil that has flowed out is separated from the refrigerant at the oil-mist separating tank 7. The lubricating oil separated from the refrigerant is returned to theoil tank 8 from the oil-mist separating tank 7. - With the above-described configuration, by employing plate-type heat exchangers that can be formed in rectangular cuboid shapes as the
condenser 2 and theevaporator 4, it becomes less likely that a gap forms between thecondenser 2 and theevaporator 4 and other components, when arranging other components of theheat pump apparatus 1. Because of this, it is possible to suppress an increase in the installation area for and volume of theheat pump apparatus 1.
More specifically, by placing thecondenser 2 and theevaporator 4, whose volumes are larger as compared with other components, next to each other, it becomes easier to prevent an increase in the installation area for theheat pump apparatus 1. - On the other hand, by disposing the
inverter 6 above theevaporator 4, it becomes easy to secure a flow path for the air that cools theinverter 6. - Furthermore, by disposing the
accumulator 10 above thecondenser 2, the refrigerant that has accumulated inside theaccumulator 10 flows into theevaporator 4 when theheat pump apparatus 1 is stopped; therefore, it is possible to prevent the refrigerant from accumulating in theaccumulator 10. - By disposing the
centrifugal compressor 5 above the oil-mist separating tank 7, in other words, by disposing the oil-mist separating tank 7 below thecentrifugal compressor 5, the refrigerant inside thecentrifugal compressor 5 flows into the oil-mist separating tank 7 when theheat pump apparatus 1 is stopped; therefore, it is possible to prevent the refrigerant from accumulating in thecentrifugal compressor 5. -
- 1
- heat pump apparatus
- 2
- condenser
- 4
- evaporator
- 5
- centrifugal compressor
- 6
- inverter (controller)
- 7
- oil-mist separating tank (oil separator)
- 10
- accumulator (gas-liquid separator)
Claims (2)
- A heat pump apparatus comprising:a compressor that compresses refrigerant;a condenser that liquefies the compressed refrigerant; andan evaporator that evaporates the liquefied refrigerant, wherein the condenser and the evaporator are plate-type heat exchangers.
- A heat pump apparatus according to Claim 1, further comprising:a controller that controls driving of the centrifugal compressor;an oil separator that separates refrigerant discharged from the centrifugal compressor from lubricating oil; anda gas-liquid separator into which the refrigerant that has flowed out from the evaporator flows, that separates gas refrigerant and liquid refrigerant, and that supplies the evaporator only with the gas refrigerant,wherein the condenser and the evaporator are disposed next to each other, and the oil separator is disposed on the same plane as the condenser and the evaporator;the controller is disposed above one of the condenser and the evaporator;the gas-liquid separator is disposed above the other one of the condenser and the evaporator; andthe centrifugal compressor is disposed above the oil separator.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009060177A JP5386201B2 (en) | 2009-03-12 | 2009-03-12 | Heat pump equipment |
PCT/JP2010/053842 WO2010104057A1 (en) | 2009-03-12 | 2010-03-09 | Heat pump device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2407736A1 true EP2407736A1 (en) | 2012-01-18 |
EP2407736A4 EP2407736A4 (en) | 2012-09-12 |
Family
ID=42728346
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10750810A Withdrawn EP2407736A4 (en) | 2009-03-12 | 2010-03-09 | Heat pump device |
Country Status (4)
Country | Link |
---|---|
US (1) | US20110185765A1 (en) |
EP (1) | EP2407736A4 (en) |
JP (1) | JP5386201B2 (en) |
WO (1) | WO2010104057A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4166866A1 (en) * | 2021-10-15 | 2023-04-19 | Hamilton Sundstrand Corporation | Integrated supplemental cooling unit |
Families Citing this family (9)
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JP5737918B2 (en) * | 2010-12-03 | 2015-06-17 | 三菱重工業株式会社 | Biological treatment-type heat pump system for wastewater treatment equipment, biological treatment-type wastewater treatment equipment provided therewith, and control method for biological treatment-type wastewater treatment equipment heat pump system |
JP5468532B2 (en) * | 2010-12-14 | 2014-04-09 | 株式会社コロナ | Heat pump equipment |
JP5891614B2 (en) * | 2011-06-27 | 2016-03-23 | 株式会社Ihi | Waste heat generator |
JP5916360B2 (en) | 2011-11-30 | 2016-05-11 | 三菱重工業株式会社 | Turbo refrigerator |
US20130255308A1 (en) * | 2012-03-29 | 2013-10-03 | Johnson Controls Technology Company | Chiller or heat pump with a falling film evaporator and horizontal oil separator |
JP6381890B2 (en) | 2013-10-25 | 2018-08-29 | 三菱重工サーマルシステムズ株式会社 | Refrigerant circulation device, refrigerant circulation method, and isomerization suppression method |
US10443912B2 (en) | 2013-10-25 | 2019-10-15 | Mitsubishi Heavy Industries Thermal Systems, Ltd. | Refrigerant circulation device, method for circulating refrigerant and acid suppression method |
CN117366922A (en) | 2015-12-10 | 2024-01-09 | 开利公司 | Economizer and refrigerating system with same |
JP7313796B2 (en) * | 2018-01-12 | 2023-07-25 | 三菱重工サーマルシステムズ株式会社 | heat exchange unit |
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EP4166866A1 (en) * | 2021-10-15 | 2023-04-19 | Hamilton Sundstrand Corporation | Integrated supplemental cooling unit |
US20230117931A1 (en) * | 2021-10-15 | 2023-04-20 | Hamilton Sundstrand Corporation | Integrated supplemental cooling unit |
Also Published As
Publication number | Publication date |
---|---|
US20110185765A1 (en) | 2011-08-04 |
JP2010210224A (en) | 2010-09-24 |
EP2407736A4 (en) | 2012-09-12 |
WO2010104057A1 (en) | 2010-09-16 |
JP5386201B2 (en) | 2014-01-15 |
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