CN111561789B - Three-way valve of compressor, compressor and refrigerating system - Google Patents

Three-way valve of compressor, compressor and refrigerating system Download PDF

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Publication number
CN111561789B
CN111561789B CN201910112863.0A CN201910112863A CN111561789B CN 111561789 B CN111561789 B CN 111561789B CN 201910112863 A CN201910112863 A CN 201910112863A CN 111561789 B CN111561789 B CN 111561789B
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China
Prior art keywords
port
valve
compressor
way valve
heat exchanger
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CN201910112863.0A
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CN111561789A (en
Inventor
高斌
李华明
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Guangdong Meizhi Compressor Co Ltd
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Guangdong Meizhi Compressor Co Ltd
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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
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/06—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids specially adapted for stopping, starting, idling or no-load operation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/24—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B31/00—Compressor arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Multiple-Way Valves (AREA)

Abstract

The invention discloses a three-way valve of a compressor, the compressor and a refrigeration system, wherein the three-way valve of the compressor comprises: the valve body is provided with a first port, a second port and a third port, the valve core is movably arranged in the valve body along the main axis of the three-way valve so that the first port can be selectively communicated with one of the second port and the third port, and an included angle between a connecting line between the first port and the third port and the main axis of the three-way valve is alpha, so that the requirements of: alpha is more than or equal to 45 degrees and less than or equal to 90 degrees. The three-way valve can greatly shorten the length of the three-way valve by redesigning the position of the port, save materials and occupy small installation space.

Description

Three-way valve of compressor, compressor and refrigerating system
Technical Field
The invention belongs to the technical field of compressor manufacturing, and particularly relates to a three-way valve of a compressor, and the compressor and a refrigeration system with the three-way valve.
Background
In the refrigeration systems currently in common use, the pressure difference between the suction side and the discharge side of the compressor must be within a certain range before the compressor can be restarted from the stop after the last operation until the compressor can be restarted, and in particular for systems with a large refrigerant quantity, the pressure difference must be of a small value, for example 1kgf/cm 2Otherwise, the compressor cannot be started, so that the quick restart function after shutdown cannot be realized.
On the other hand, in the related art, when the compressor is stopped, the refrigerant in the high-pressure side heat exchanger returns to the low-pressure side through the gaps between the compressor parts, thereby increasing the temperature and pressure in the low-pressure side heat exchanger, in this case, the heat in the high-pressure side heat exchanger is wasted, the cooling capacity in the low-pressure side heat exchanger is lost, and the operation efficiency of the refrigeration apparatus is not good.
Aiming at the problems, a pressure control mechanism is required to be arranged on the compressor, so that the problem of poor starting caused by overlarge pressure difference can be effectively solved, meanwhile, the pipeline is reasonably arranged, so that the high pressure and the low pressure of the system can be maintained, and the waste heat of the system can be utilized.
In the related art, in order to solve the above problems, a bypass pipeline is provided outside the compressor, and the bypass pipeline is used for communicating the suction side and the exhaust side of the compressor when the compressor is stopped, but in the technical scheme, a plurality of parts including pipelines, valve bodies, corresponding control parts and the like need to be added outside the compressor, so that the mechanism of the compressor and the system is complex, and the cost is high.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art.
The three-way valve of the compressor according to the embodiment of the present invention includes: the valve body is provided with a first port, a second port and a third port, the valve core is movably arranged in the valve body along the main axis of the three-way valve so that the first port can be selectively communicated with one of the second port and the third port, and an included angle between a connecting line between the first port and the third port and the main axis of the three-way valve is alpha, so that the requirements of: alpha is more than or equal to 45 degrees and less than or equal to 90 degrees.
According to the three-way valve disclosed by the embodiment of the invention, the length of the three-way valve can be greatly shortened by redesigning the position of the port, the material is saved, and the installation space occupied by the three-way valve is small.
According to the three-way valve of the compressor of one embodiment of the present invention, the axis of the first port, the axis of the second port, and the axis of the third port are parallel to each other and are perpendicular to the main axis of the three-way valve.
According to the three-way valve of the compressor of one embodiment of the present invention, the axes of the first port, the second port and the third port are coplanar.
According to the three-way valve of the compressor, the axis of the first port is coincident with the axis of the second port, and the first port and the second port are arranged on opposite sides of the valve core in a facing mode.
According to the three-way valve of the compressor of one embodiment of the present invention, the first port and the third port are provided on the same side of the valve spool, and the first port and the second port are provided on opposite sides of the valve spool.
According to the three-way valve of the compressor, the valve body limits the valve cavity, the first port and the second port are always communicated through the valve cavity, the valve core always blocks the third port, the valve core is provided with a passage, and when the valve core moves to the state that the first port and the third port are both communicated with the passage, the first port is disconnected from the second port.
According to the three-way valve of the compressor of one embodiment of the present invention, a line connecting the first port and the third port is parallel to an extending direction of the passage.
The invention also proposes a compressor comprising: a compressor body having separate discharge and suction ports; the three-way valve is installed in the compressor body, the first port is communicated with the high-pressure cavity of the compressor body, the second port is connected with the exhaust port, and the third port is connected with the suction port.
The compressor has the same advantages as the three-way valve described above with respect to the prior art, and will not be described herein.
The invention also proposes a compressor comprising: a compressor body having separate discharge and suction ports; the three-way valve is installed outside the compressor body, the first port is connected with the exhaust port, the second port is used for being connected with an external part, and the third port is connected with the suction port.
The invention also proposes a refrigeration system comprising: the air exhaust port is connected with the first interface of the first heat exchanger, the throttling valve is connected between the second interface of the first heat exchanger and the first interface of the second heat exchanger, and the second interface of the second heat exchanger is connected with the air suction port.
The invention also proposes a refrigeration system comprising: the reversing device comprises a first valve port, a second valve port, a third valve port and a fourth valve port, the first valve port is connected with the exhaust port, the second valve port is connected with the first interface of the first heat exchanger, the throttling valve is connected between the second interface of the first heat exchanger and the first interface of the second heat exchanger, the second interface of the second heat exchanger is connected with the fourth valve port, and the third valve port is connected with the air suction port.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural view of a three-way valve according to an embodiment of the invention (a first port communicates with a second port);
fig. 2 is a schematic structural view of a three-way valve according to an embodiment of the present invention (a first port communicates with a third port);
FIG. 3 is a cross-sectional view of a three-way valve according to an embodiment of the invention (a first port in communication with a second port);
FIG. 4 is a cross-sectional view of a three-way valve according to an embodiment of the invention (the first port communicating with the third port);
FIG. 5 is a schematic diagram of a refrigeration system according to an embodiment of the present invention during normal operation;
fig. 6 is a schematic diagram of a refrigeration system according to an embodiment of the present invention at shutdown.
Reference numerals:
a refrigeration system (100) is provided that,
a three-way valve 10, a first port 10a, a second port 10b, a third port 10c, a valve body 11, a valve chamber 12, a first stopper 13, a second stopper 14, a valve core 15, a passage 16, a first seal block 17, a second seal block 18,
A compressor body 20, an exhaust port 20b, an intake port 20c, a reservoir 21,
a first heat exchanger 31, a second heat exchanger 32, a throttle valve 33,
a direction changing device 40, a first valve port 40a, a second valve port 40b, a third valve port 40c and a fourth valve port 40 d.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
A three-way valve 10 of a compressor according to an embodiment of the present invention will be described with reference to fig. 1 to 6.
As shown in fig. 1 to 4, a three-way valve 10 of a compressor according to one embodiment of the present invention includes: a valve body 11 and a valve spool 15.
Wherein the valve body 11 is provided with a first port 10a, a second port 10b, and a third port 10c, the valve body 11 defines a valve chamber 12, and the valve spool 15 is movably disposed in the valve body 11 along a main axis of the three-way valve 10 so that the first port 10a can selectively communicate with one of the second port 10b and the third port 10c, and an X direction in fig. 1 and 2 is a direction of the main axis of the three-way valve 10. The first port 10a is used for flowing refrigerant, the second port 10b is used for connecting a discharge port 20b of the compressor, and the third port 10c is used for connecting a suction port 20c of the compressor.
It will be appreciated that the valve spool 15 is movably disposed within the valve body 11 along the main axis of the three-way valve 10, and that movement of the valve spool 15 switches the communication state of the first port 10a, the second port 10b, and the third port 10 c.
The three-way valve 10 has a first state and a second state: as shown in fig. 1 and 3, in the first state, the first port 10a communicates with the second port 10b, and the first port 10a is disconnected from the third port 10 c; as shown in fig. 2 and 4, in the second state, the first port 10a communicates with the third port 10c, and the first port 10a is disconnected from the second port 10 b.
As shown in fig. 1 to 4, the angle between the line connecting the first port 10a and the third port 10c and the main axis of the three-way valve 10 is α, which satisfies: 45 ≦ α ≦ 90, as shown in FIG. 1, angle α represents the size of the smaller of the angles between the two lines. The number of ports arranged in the direction of the main axis of the three-way valve 10 is small, the length of the three-way valve 10 can be shortened, the size of the three-way valve 10 is greatly reduced, the three-way valve 10 with small size can be directly arranged in the compressor, external installation is not needed, and connection of external pipelines can be omitted.
All ports of the pilot-operated three-way valve in the related art are arranged along the main axis, so that the length dimension of the valve body 11 is large, and the present application makes it possible to arrange the three-way valve 10 in the compressor by redesigning the arrangement of the ports.
Of course, the three-way valve 10 may also be arranged outside the compressor.
In some embodiments, as shown in fig. 3 and 4, the axis of the first port 10a, the axis of the second port 10b, and the axis of the third port 10c are parallel to each other and are all perpendicular to the main axis of the three-way valve 10. Thus, the ports can be arranged on the side surface of the three-way valve 10, and the length of the three-way valve 10 can be shortened.
In some embodiments, as shown in fig. 3 and 4, the axis of the first port 10a, the axis of the second port 10b, and the axis of the third port 10c are coplanar. That is, the first port 10a, the second port 10b, and the third port 10c are arranged substantially on the same cross section of the three-way valve 10, which can greatly shorten the length of the three-way valve 10.
For example, in the related art, the length of the three-way valve 10 having an outer diameter of about 36mm is usually between 150mm and 180mm, or even longer. The length of the valve body 11 of the three-way valve 10 of the embodiment of the invention can be reduced to about 80mm, and nearly general materials and use space are saved.
According to the three-way valve 10 of the embodiment of the invention, by redesigning the position of the port, the length of the three-way valve 10 can be greatly shortened, the material is saved, and the installation space occupied by the three-way valve 10 is small.
As shown in fig. 3 and 4, the axis of the first port 10a coincides with the axis of the second port 10b, the first port 10a and the second port 10b are disposed opposite to each other on both sides of the valve body 15, or the first port 10a and the second port 10b are respectively disposed on both side walls of the valve body 11 disposed opposite to each other. When the compressor starts, first port 10a and second port 10b intercommunication through just setting up first port 10a and second port 10b, can very big degree reduce pressure loss, and the air current is more smooth and easy.
As shown in fig. 3 and 4, the first port 10a and the third port 10c are disposed on the same side of the valve core 15, the first port 10a and the second port 10b are disposed on different sides of the valve core 15, or the first port 10a and the third port 10c are disposed on the same side wall of the valve body 11, and the first port 10a and the second port 10b are disposed on two opposite side walls of the valve body 11, respectively. This design may facilitate the switching of the three-way valve 10 between the first state and the second state.
As shown in fig. 3 and 4, the valve body 11 defines a valve chamber 12, the first port 10a and the second port 10b are normally communicated through the valve chamber 12, the valve spool 15 normally blocks the third port 10c, the valve spool 15 has a passage 16, and when the valve spool 15 is moved to the state where the first port 10a and the third port 10c are both communicated with the passage 16, the first port 10a is disconnected from the second port 10 b.
It will be appreciated that the second port 10b is in communication with the valve chamber 12, and that during operation of the compressor, the valve spool 15 blocks the third port 10c and the first port 10a is also in communication with the valve chamber 12, so that the three-way valve 10 is in the first state; at compressor shutdown, the spool 15 moves along the main axis disconnecting the first port 10a from the valve chamber 12 and both the first port 10a and the third port 10c are in communication with the passage 16 of the spool 15, so that the three-way valve 10 is in the second state.
The line connecting the first port 10a and the third port 10c is parallel to the extending direction of the passage 16, and the line connecting the first port 10a and the third port 10 and the extending direction of the passage 16 are both perpendicular to the main axis of the three-way valve 10 and perpendicular to the axis of the first port 10 a. The extending direction of the channel 16 refers to the longitudinal direction of the channel 16.
As shown in fig. 1 and 2, the valve core 15 is provided with a first sealing block 17 and a second sealing block 18 at two ends along the main axis, the inner wall of the valve body 11 is provided with a first stopper 13 and a second stopper 14 at two ends along the main axis, and the first stopper 13 and the second stopper 14 are used for limiting the moving stroke of the valve core 15.
Since the pressure difference between the high pressure side region and the low pressure side region in the refrigeration system is large, for example, the pressure difference of R410A refrigerant widely used at present is generally 1 to 2MPa during normal operation, and therefore, the valve element 15 is sealed only by mechanical force of the valve element 15, and a phenomenon that the valve element 15 is pushed open by the high pressure side refrigerant usually occurs. Even if only one slit is opened, the refrigerant of high temperature and high pressure in the high pressure side heat exchanger (first heat exchanger 31) flows into the low pressure side heat exchanger (second heat exchanger 32) rapidly, and energy loss occurs in the high pressure side heat exchanger. Therefore, when the valve member 15 is used to switch the flow path, the valve member 15 is pressed forward by the differential pressure of the refrigeration system, and the sealing of the valve member 15 can be improved, which is significant for reducing the energy loss in the high-pressure side heat exchanger.
When the compressor is operated, as shown in fig. 1, 3 and 5, the first port 10a communicates with the second port 10b, and the third port 10c is isolated. The second port 10b is connected to a discharge port 20b of the compressor. As shown in fig. 3, the third port 10c is compressed when the spool 15 is subjected to a downward differential pressure. When the compressor stops operating, as shown in fig. 2, 4 and 6, the first port 10a of the three-way valve 10 communicates with the third port 10c, and the second port 10b is isolated. As shown in fig. 4, at this time, the valve spool 15 is still subjected to a downward differential pressure, the first port 10a and the third port 10c are compressed, the first port 10a and the third port 10c are communicated through the passage 16, and the intake and exhaust differential pressures are balanced.
In summary, the three-way valve 10 disclosed by the invention can be used for rapidly restarting the compressor, and the refrigerant in the high-pressure side heat exchanger is trapped when the system stops, so that the heat loss of the refrigerant in the high-pressure side heat exchanger is reduced. Meanwhile, in the working process of the three-way valve 10, the valve core 15 is always under the positive differential pressure, so that the sealing performance of the three-way valve 10 on the refrigerant in the high-pressure side heat exchanger is ensured.
The invention also discloses a compressor.
As shown in fig. 1 to 6, the compressor includes a compressor body 20 and a three-way valve 10, wherein the compressor body 20 has a discharge port 20b and a suction port 20c which are separated, and the compressor body 20 may include an accumulator 21, and a suction port of the accumulator 21 forms the suction port 20c of the compressor body 20.
The three-way valve 10 is the three-way valve 10 of any one of the above embodiments, the three-way valve 10 is installed in the compressor body 20, and the first port 10a is communicated with the high pressure chamber of the compressor body 20, the second port 10b is connected with the exhaust port 20b, and the third port 10c is connected with the suction port 20 c.
According to the compressor provided by the embodiment of the invention, the quick restart can be realized, the refrigerant in the high-pressure side heat exchanger is intercepted when the system stops, and the heat loss of the refrigerant in the high-pressure side heat exchanger is reduced. Meanwhile, in the working process of the three-way valve 10, the valve core 15 is always under the positive differential pressure, so that the sealing performance of the three-way valve 10 on the refrigerant in the high-pressure side heat exchanger is ensured.
By adopting the technical scheme of the invention, the double effects of waste heat utilization and quick pressure balance of the system can be simultaneously realized by adding the built-in three-way valve 10, and the exhaust flow path is simple, the resistance is small, the invention is particularly suitable for occasions sensitive to starting pressure difference, large starting torque and quick restarting requirement, is particularly effective for the application of the rotor compressor, and has the advantages of simple structure, wide application range, high efficiency and reliability.
A refrigeration system according to an embodiment of the present invention, which may be an air conditioner, a refrigerator, or the like, is described below with reference to fig. 5 to 6.
As shown in fig. 5 to 6, a refrigeration system according to an embodiment of the present invention includes: the compressor is the compressor of any one of the embodiments, the first interface of the first heat exchanger 31 is connected with the exhaust port 20b, the first interface of the first heat exchanger 31 is communicated with the exhaust port 20b through the exhaust port 20b, the throttle valve 33 is connected between the second interface of the first heat exchanger 31 and the first interface of the second heat exchanger 32, the second interface of the second heat exchanger 32 is connected with the suction port 20c of the compressor, the second interface of the second heat exchanger 32 is communicated with the suction port 20c of the compressor through the suction port 20c, and the suction port 20c of the compressor can be formed at the end part of the suction port 20c of the compressor.
According to the refrigeration system provided by the embodiment of the invention, the quick restart can be realized, the residual heat can be utilized after the compressor is stopped, and the energy efficiency is high.
As shown in fig. 5 to 6, a refrigeration system according to another embodiment of the present invention includes: the compressor, the reversing device 40, the first heat exchanger 31, the throttle valve 33 and the second heat exchanger 32.
The direction changing device 40 includes a first valve port 40a and a second valve port 40b, the reversing device 40 may be a four-way valve, the first valve port 40a is connected to the exhaust port 20b, the second valve port 40b is connected to the first port of the first heat exchanger 31 through an exhaust port 20b pipe (high pressure pipe), the throttle valve 33 is connected between the second port of the first heat exchanger 31 and the first port of the second heat exchanger 32, the second port of the second heat exchanger 32 is connected to the fourth valve port 40d, the third valve port 40c is connected to the suction port 20c of the compressor through a suction port 20c pipe (low pressure pipe), and the suction port 20c of the compressor may be formed at an end of the suction port 20c of the compressor.
When the first valve port 40a is communicated with the second valve port 40b, and the third valve port 40c is communicated with the fourth valve port 40d, the first heat exchanger 31 is a high-pressure side heat exchanger, and the second heat exchanger 32 is a low-pressure side heat exchanger; when the first port 40a communicates with the fourth port 40d and the second port 40b communicates with the third port 40c, the second heat exchanger 32 is a high-pressure side heat exchanger and the first heat exchanger 31 is a low-pressure side heat exchanger.
According to the refrigeration system provided by the embodiment of the invention, the quick restart can be realized, the residual heat can be utilized after the compressor is stopped, and the energy efficiency is high.
The invention also discloses another compressor.
The compressor includes a compressor body 20 and a three-way valve 10, wherein the compressor body 20 has a discharge port 20b and a suction port 20c which are separated, and the compressor body 20 may include an accumulator 21, and a suction port of the accumulator 21 forms the suction port 20c of the compressor body 20.
The three-way valve 10 is the three-way valve 10 of any one of the above embodiments, the three-way valve 10 is installed outside the compressor body 20, and the first port 10a is connected to the exhaust port 20b, the second port 10b is used for connecting to an external component, and the third port 10c is connected to the suction port 20 c.
According to the compressor provided by the embodiment of the invention, the quick restart can be realized, the refrigerant in the high-pressure side heat exchanger is intercepted when the system stops, and the heat loss of the refrigerant in the high-pressure side heat exchanger is reduced. Meanwhile, in the working process of the three-way valve 10, the valve core 15 is always under the positive differential pressure, so that the sealing performance of the three-way valve 10 on the refrigerant in the high-pressure side heat exchanger is ensured.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (9)

1. A compressor, comprising:
a compressor body having separate discharge and suction ports;
a three-way valve comprising: the valve body is provided with a first port, a second port and a third port, the valve core is movably arranged in the valve body along the main axis of the three-way valve so that the first port can be selectively communicated with one of the second port and the third port, and an included angle between a connecting line between the first port and the third port and the main axis of the three-way valve is alpha, so that the requirements of: alpha is more than or equal to 45 degrees and less than or equal to 90 degrees, and the axis of the first port, the axis of the second port and the axis of the third port are parallel to each other and are all vertical to the main axis of the three-way valve;
The three-way valve is installed in the compressor body, the first port is communicated with the high-pressure cavity of the compressor body, the second port is connected with the exhaust port, and the third port is connected with the suction port.
2. A compressor, comprising:
a compressor body having a separate discharge port and suction port;
a three-way valve comprising: the valve body is provided with a first port, a second port and a third port, the valve core is movably arranged in the valve body along the main axis of the three-way valve so that the first port can be selectively communicated with one of the second port and the third port, and an included angle between a connecting line between the first port and the third port and the main axis of the three-way valve is alpha, so that the requirements of: alpha is more than or equal to 45 degrees and less than or equal to 90 degrees, and the axis of the first port, the axis of the second port and the axis of the third port are parallel to each other and are all vertical to the main axis of the three-way valve;
the three-way valve is installed outside the compressor body, the first port is connected with the exhaust port, the second port is used for being connected with an external part, and the third port is connected with the air suction port.
3. A compressor according to claim 1 or 2 wherein the axes of the first, second and third ports are coplanar.
4. The compressor of claim 1 or 2, wherein an axis of the first port coincides with an axis of the second port, and the first port and the second port are disposed opposite to each other on the opposite side of the valve element.
5. The compressor of claim 1 or 2, wherein the first port and the third port are provided on a same side of the valve spool, and the first port and the second port are provided on an opposite side of the valve spool.
6. The compressor of claim 1 or 2, wherein the valve body defines a valve chamber through which the first and second ports are in constant communication, the valve spool normally blocks the third port, the valve spool having a passage, the first port being disconnected from the second port when the valve spool is moved to a position where both the first and third ports are in communication with the passage.
7. The compressor of claim 6, wherein a line connecting the first port and the third port is parallel to an extending direction of the passage.
8. A refrigeration system, comprising: the compressor of claim 1, wherein the first port of the first heat exchanger is connected to the exhaust port, the throttle valve is connected between the second port of the first heat exchanger and the first port of the second heat exchanger, and the second port of the second heat exchanger is connected to the suction port.
9. A refrigeration system, comprising: the compressor of claim 1, wherein the reversing device comprises a first valve port, a second valve port, a third valve port and a fourth valve port, the first valve port is connected with the exhaust port, the second valve port is connected with the first interface of the first heat exchanger, the throttle valve is connected between the second interface of the first heat exchanger and the first interface of the second heat exchanger, the second interface of the second heat exchanger is connected with the fourth valve port, and the third valve port is connected with the suction port.
CN201910112863.0A 2019-02-13 2019-02-13 Three-way valve of compressor, compressor and refrigerating system Active CN111561789B (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2213241Y (en) * 1993-06-26 1995-11-22 倪建国 Unloading starter for refrigeration compression engine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2213241Y (en) * 1993-06-26 1995-11-22 倪建国 Unloading starter for refrigeration compression engine

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