CN110985334B - Reciprocating compressor and refrigeration equipment - Google Patents

Reciprocating compressor and refrigeration equipment Download PDF

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Publication number
CN110985334B
CN110985334B CN201911204774.5A CN201911204774A CN110985334B CN 110985334 B CN110985334 B CN 110985334B CN 201911204774 A CN201911204774 A CN 201911204774A CN 110985334 B CN110985334 B CN 110985334B
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cylinder
reciprocating compressor
working cavity
port
piston
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CN110985334A (en
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周杏标
朱晓涵
郭永祥
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Anhui Meizhi Precision Manufacturing Co Ltd
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Anhui Meizhi Precision Manufacturing Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B25/00—Multi-stage pumps
    • F04B25/02—Multi-stage pumps of stepped piston type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/122—Cylinder block
    • 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
    • F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
    • 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
    • F25B6/00—Compression machines, plants or systems, with several condenser circuits
    • F25B6/02—Compression machines, plants or systems, with several condenser circuits arranged in parallel

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Compressor (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

The invention provides a reciprocating compressor and refrigeration equipment, wherein the reciprocating compressor comprises a shell, wherein the shell is provided with a gas suction port, a first gas outlet port and a second gas outlet port, and the gas discharge pressures of the first gas outlet port and the second gas outlet port are different; the cylinder is arranged in the shell; the piston is arranged in the cylinder, the piston is configured to reciprocate in the cylinder, and the cylinder and the piston enclose to form a first working cavity and a second working cavity; the first working cavity is not communicated with the second working cavity, the first working cavity is communicated with the first air outlet port, and the second working cavity is communicated with the second air outlet port. According to the reciprocating compressor, the first working cavity and the second working cavity are independent, the first working cavity and the second working cavity can be respectively adaptive to different exhaust pressures, the double exhaust function which can be realized by two reciprocating compressors in the related technology can be realized by a single reciprocating compressor, and the energy consumption is effectively saved by using double-row high-temperature and low-temperature heat.

Description

Reciprocating compressor and refrigeration equipment
Technical Field
The invention relates to the technical field of reciprocating compressors, in particular to a reciprocating compressor and refrigeration equipment.
Background
At present, a refrigeration/heat pump system based on vapor compression cycle is widely applied to the fields of air conditioners, heat pump water heaters, heat pump clothes dryers and the like. As shown in fig. 10, the existing single-discharge-pressure vapor-compression-cycle refrigeration/heat pump system mainly includes a reciprocating compressor, a condenser 718 ', a throttling element 714', and an evaporator 716 ', wherein a crankshaft 702' of the reciprocating compressor is connected to a piston 708 'through a connecting rod 704', and the crankshaft rotates to drive the piston 708 'to reciprocate in a cylinder 706', so as to achieve the processes of suction, compression, and exhaust. However, in the related art reciprocating compressor, only one discharge port 712 ' and one suction port 710 ' are provided on the shell 700 ', that is, only one discharge pressure and a corresponding condensation temperature are provided, and two or more reciprocating compressors are required to realize two discharge pressures, and in order to realize a dual-temperature or multi-temperature refrigeration system, a plurality of reciprocating compressors are required to be connected, which obviously increases the overall cost of the product.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art or the related art.
To this end, a first aspect of the present invention proposes a reciprocating compressor.
A second aspect of the invention proposes a refrigeration device.
In view of this, according to a first aspect of the present invention, there is provided a reciprocating compressor comprising: the air conditioner comprises a shell, a first air outlet port and a second air outlet port, wherein the shell is provided with an air suction port, the first air outlet port and the second air outlet port, and the exhaust pressures of the first air outlet port and the second air outlet port are different; the cylinder is arranged in the shell; the piston is arranged in the cylinder, the piston is configured to reciprocate in the cylinder, and the cylinder and the piston enclose to form a first working cavity and a second working cavity; the first working cavity is not communicated with the second working cavity, the first working cavity is communicated with the first air outlet port, and the second working cavity is communicated with the second air outlet port.
The reciprocating compressor provided by the first aspect of the invention comprises a shell, a cylinder and a piston, wherein the shell is provided with a gas suction port, a first gas outlet port and a second gas outlet port, the gas discharge pressures of the first gas outlet port and the second gas outlet port are different, the first gas outlet port and the second gas outlet port are not communicated, the piston is arranged in the cylinder, the piston is configured to reciprocate in the cylinder, and the cylinder and the piston enclose to form a first working cavity and a second working cavity, namely, the piston can reciprocate in the cylinder to compress refrigerant in the cylinder, the first working cavity is communicated with the first gas outlet port, the second working cavity is communicated with the second gas outlet port, namely, the refrigerant in the first working cavity is discharged out of the reciprocating compressor through the first gas outlet port arranged on the shell, the refrigerant in the second working cavity is discharged out of the reciprocating compressor through the second gas outlet port arranged on the shell, that is, first working chamber and second working chamber are independent each other, and first working chamber and second working chamber can adapt to different discharge pressures respectively, have realized the function that single cylinder of single reciprocating compressor is two to be carminative, utilize the heat of double high low temperature, effectively practice thrift the energy consumption.
The reciprocating compressor provided by the invention realizes the double exhaust function of a single cylinder of a single reciprocating compressor by arranging the first working cavity and the second working cavity which are not connected with each other on the basis of the existing single cylinder, and effectively saves energy consumption by utilizing double rows of high and low temperature heat; moreover, a single reciprocating compressor can realize the double exhaust function which can be realized by two reciprocating compressors in the related technology, thereby reducing the cost and saving the installation space. In addition, the invention limits the different exhaust pressures of the first air outlet port and the second air outlet port, and the different exhaust pressures can ensure that the time for the refrigerant to reach the preset temperature and the required energy are different.
Specifically, according to the reciprocating compressor provided by the invention, the piston makes reciprocating motion in the cylinder, a low-pressure refrigerant enters the reciprocating compressor through the air suction port, the refrigerant entering the first working cavity completes the processes of air suction, compression and exhaust in the first working cavity, and the refrigerant is exhausted through the first air outlet port; the refrigerant entering the second working cavity completes the processes of air suction, compression and exhaust in the second working cavity and is exhausted through the second air outlet port; furthermore, the first working cavity and the second working cavity work independently, and the first working cavity and the second working cavity simultaneously complete one air suction, compression and exhaust process when the piston reciprocates once in the cylinder.
In addition, according to the reciprocating compressor in the above technical solution provided by the first aspect of the present invention, the following additional technical features may be further provided:
in one possible design, the number of the cylinders is one, a first cylinder body and a second cylinder body are arranged on each cylinder, and the first cylinder body is communicated with the second cylinder body; the quantity of piston is one, is equipped with first cock body and second cock body on the piston, and first cock body is connected with the second cock body, and first cock body sets up and forms first working chamber in first cylinder body, and the second cock body sets up and forms the second working chamber in the second cylinder body.
In the design, the number of the cylinders is one, the number of the pistons is one, and one cylinder and the first piston are enclosed together to form a first working cavity and a second working cavity, namely, a single cylinder is arranged in the reciprocating compressor to be matched with the single piston to realize a double exhaust function, so that the double exhaust function of the single cylinder is realized, and the cost of the reciprocating compressor is further reduced. Specifically, a first cylinder body and a second cylinder body which are communicated with each other are arranged on a cylinder, a first plug body and a second plug body which are connected with each other are arranged on a piston, the first plug body is arranged in the first cylinder body to form a first working cavity, the first working cavity is communicated with a first air outlet port, the second plug body is arranged in the second cylinder body to form a second working cavity, the second working cavity is communicated with a second air outlet port, a refrigerant in the first working cavity is discharged out of the reciprocating compressor through the first air outlet port arranged on a shell, and the refrigerant in the second working cavity is discharged out of the reciprocating compressor through the second air outlet port arranged on the shell.
In one possible design, the reciprocating compressor further includes: a crankshaft; one end of the connecting rod is connected with the piston, and the other end of the connecting rod is connected with the crankshaft.
In this design, reciprocating compressor still includes the bent axle, the bent axle is provided with the eccentric portion, the one end of connecting rod links to each other with the piston, the other end of connecting rod links to each other with the eccentric portion of bent axle, the rotatory round of bent axle can drive the piston through the connecting rod and be a reciprocating motion in the cylinder, reciprocating motion is once done in first cylinder body to first piston promptly, reciprocating motion is once done in the second cylinder body to the second piston simultaneously to drive first working chamber and second working chamber and accomplish once breathing in, the process of compression and exhaust.
In one possible design, the first working chamber is a medium-pressure working chamber and the second working chamber is a high-pressure working chamber; the ratio of the outer diameter of the first plug body to the outer diameter of the second plug body is greater than or equal to 0.58 and less than or equal to 1.7.
In this design, establish first working chamber and be the middling pressure working chamber, the second working chamber is the high pressure working chamber, first cock body and second cock body looks adaptation's the first cylinder body and the second cylinder body of the different internal diameters size to the external diameter ratio of first cock body and second cock body has specifically been injectd, makes the external diameter of first cock body and the external diameter of second cock body ratio more than or equal to 0.58 and less than or equal to 1.7. Within the range, the condensing temperatures of the refrigerants in the first working cavity and the second working cavity are different, so that the optimal heat exchange effect can be achieved, and the energy efficiency of the reciprocating compressor is improved.
In one possible design, the reciprocating compressor further includes: the first exhaust port is arranged on the cylinder and communicated with the first working cavity and the first air outlet port; the second air outlet is arranged on the air cylinder and communicated with the second working cavity and the second air outlet port; the first air suction port is arranged on the cylinder or the piston; and the second air suction port is arranged on the cylinder or the piston.
In this design, through set up first gas vent and second gas vent on reciprocating compressor's cylinder, and set up first gas vent and first working chamber and the first port of giving vent to anger and be linked together, the second gas vent is given vent to anger with second working chamber and second and is linked together, make the refrigerant after being compressed can directly be via setting up first gas vent and the second gas vent exhaust cylinder on the cylinder in first working chamber and second working chamber, and then give vent to anger port discharge reciprocating compressor through first gas vent and second, the exhaust efficiency has been promoted, thereby the energy consumption has been reduced. Furthermore, a first air suction port is arranged on the cylinder or the piston, the refrigerant enters the first working cavity through the first air suction port, a second air suction port is arranged on the cylinder or the piston, and the refrigerant enters the second working cavity through the second air suction port.
It can be understood that the first air intake port may be disposed on the piston to allow the refrigerant to enter the first working chamber through the first air intake port on the piston, or disposed on the cylinder to allow the refrigerant to enter the first working chamber through the first air intake port on the cylinder; the second air suction port can be arranged on the piston, so that the refrigerant enters the second working cavity through the second air suction port on the piston, or the second air suction port can be arranged on the cylinder, so that the refrigerant enters the second working cavity through the second air suction port on the cylinder, namely, the refrigerant respectively enters the first working cavity and the second working cavity after passing through the air suction port at the shell of the reciprocating compressor.
In one possible design, the number of the cylinders is two, the two cylinders comprise a first cylinder and a second cylinder, and the first cylinder and the second cylinder are both arranged in the shell; the number of the pistons is two, the two pistons comprise a first piston and a second piston, the first piston is arranged in the first cylinder to form a first working cavity, and the second piston is arranged in the second cylinder to form a second working cavity.
In the design, the number of cylinders is two, and is first cylinder and second cylinder respectively, and the number of piston is two, is first piston and second piston respectively, and first piston setting forms first working chamber in first cylinder, and the second piston setting forms second working chamber in the second cylinder. Furthermore, first cylinder and second cylinder simple structure easily produce, can also be with the cylinder of first cylinder and second cylinder preparation for the same structure, utilize the cylinder of same structure size to regard as first cylinder and second cylinder respectively promptly, be favorable to the batch production to the cylinder, further reduced reciprocating compressor's manufacturing cost. Specifically, the first cylinder and the second cylinder are not communicated with each other, the first piston reciprocates in the first cylinder to compress a refrigerant in the first cylinder, specifically, the first piston is arranged in the first cylinder to form a first working cavity, the second piston reciprocates in the second cylinder to compress a refrigerant in the second cylinder, and specifically, the second piston is arranged in the second cylinder to form a second working cavity. The first working chamber is communicated with the first air outlet port, and the second working chamber is communicated with the second air outlet port, namely, the refrigerant in the first working chamber is discharged out of the reciprocating compressor through the first air outlet port arranged on the shell, and the refrigerant in the second working chamber is discharged out of the reciprocating compressor through the second air outlet port arranged on the shell.
In one possible design, the reciprocating compressor further includes: a crankshaft; one end of the first connecting rod is connected with the first piston, and the other end of the first connecting rod is connected with the crankshaft; and one end of the second connecting rod is connected with the second piston, and the other end of the second connecting rod is connected with the crankshaft.
In this design, reciprocating compressor still includes the bent axle, and the bent axle is provided with eccentric portion, and the one end of first connecting rod links to each other with the piston, and the other end is connected with the eccentric portion of bent axle, and the one end of second connecting rod links to each other with the piston, and the other end is connected with the eccentric portion of bent axle, and the rotatory round of bent axle can drive first piston through first connecting rod and do reciprocating motion once in first cylinder to drive the second piston through the second connecting rod and do reciprocating motion once in the second cylinder. The crankshaft is simultaneously connected with the first connecting rod and the second connecting rod, namely, the first working cavity and the second working cavity can complete one-time air suction, compression and exhaust process through the first connecting rod and the second connecting rod when the crankshaft rotates for one circle, so that the single reciprocating compressor can drive the double cylinders to exhaust air by one crankshaft, one crankshaft can drive the first working cavity and the second working cavity to work, and energy consumption is effectively saved.
Specifically, first connecting rod and second connecting rod distribute in the homonymy of bent axle, and first cylinder and second cylinder also are located the homonymy of bent axle, and the bent axle rotates the round and can drive first connecting rod and second connecting rod syntropy removal simultaneously promptly to make first working chamber and second working chamber inhale the gas simultaneously, compress and carminative process.
Or specifically, the first connecting rod and the second connecting rod are distributed on two opposite sides of the crankshaft, and the first cylinder and the second cylinder are also positioned on two opposite sides of the crankshaft, namely, the crankshaft rotates for a circle to drive the first connecting rod and the second connecting rod to simultaneously move in different directions, so that the first working cavity and the second working cavity perform processes of air suction, compression and exhaust in a staggered mode, namely when the first working cavity is in an air suction state, the second working cavity is in a compression and exhaust state; the first working chamber is in a compressed and exhausted state, and the second working chamber is in an air-intake state.
It is understood that the distribution of the first connecting rod, the second connecting rod and the crankshaft includes, but is not limited to, the above two connection modes, and different distribution modes of the first connecting rod and the second connecting rod and the crankshaft can be selected according to different practical situations and product requirements.
In one possible design, the reciprocating compressor further includes: the first air outlet is arranged on the first air cylinder and communicated with the first working cavity and the first air outlet port; the second air outlet is arranged on the second air cylinder and communicated with the second working cavity and the second air outlet port; a first intake port provided on the first cylinder or the first piston; and a second suction port provided in the second cylinder or the second piston.
In the design, a first exhaust port is arranged on a first cylinder of the reciprocating compressor, and the first exhaust port is communicated with a first working chamber and a first air outlet port, so that the refrigerant compressed in the first working chamber can be directly exhausted out of the cylinder through the first exhaust port arranged on the first cylinder; and a second air outlet is formed in a second cylinder of the reciprocating compressor and communicated with a second working cavity and a second air outlet port, so that the refrigerant compressed in the second working cavity can be directly discharged out of the cylinder through the second air outlet formed in the second cylinder. The refrigerant entering the reciprocating compressor is compressed by the first working cavity and the second working cavity and then is discharged out of the reciprocating compressor through the first air outlet port and the second air outlet port respectively, so that the exhaust efficiency is improved, and the energy consumption is reduced. Furthermore, a first air suction port is arranged on the first cylinder or the first piston, the refrigerant enters the first working cavity through the first air suction port, a second air suction port is arranged on the first cylinder or the second piston, and the refrigerant enters the second working cavity through the second air suction port.
It can be understood that the first air intake port may be disposed on the first piston to allow the refrigerant to enter the first working chamber through the first air intake port on the piston, or disposed on the first cylinder to allow the refrigerant to enter the first working chamber through the first air intake port on the cylinder; the second air suction port can be arranged on the second piston, so that the refrigerant enters the second working cavity through the second air suction port on the piston, or the second air suction port can be arranged on the second cylinder, so that the refrigerant enters the second working cavity through the second air suction port on the cylinder, namely, the refrigerant respectively enters the first working cavity and the second working cavity after passing through the air suction port at the shell of the reciprocating compressor.
In one possible design, the number of the suction ports is one, and the first suction port is communicated with the first working chamber and the suction port; the second air suction port is communicated with the second working cavity and the air suction port.
In the design, the number of the suction ports of the reciprocating compressor is set to be one, the first suction port communicates the first working chamber with the suction port on the reciprocating compressor shell, so that the uncompressed refrigerant enters the first working chamber through the first suction port after passing through the suction port, the first cylinder or the second piston is provided with the second suction port which communicates the second working chamber with the suction port on the reciprocating compressor shell, so that the uncompressed refrigerant enters the second working chamber through the second suction port after passing through the suction port, and the refrigerant is converged before entering the reciprocating compressor, thereby the suction port of the reciprocating compressor has a simple structure, the structure of the reciprocating compressor is simplified, the production cost of the product is reduced, and the reciprocating compressor sucks the refrigerant through one suction port, the refrigerant can be converged after flowing out of the two evaporators connected with the reciprocating compressor, the reciprocating compressor can be directly communicated with one evaporator, the two condensers are not required to be respectively provided with the evaporators, the connecting structure of the reciprocating compressor is further simplified, and the product cost is reduced.
In one possible design, the number of the suction ports is two, including a first suction port and a second suction port; the first air suction port is communicated with the first working cavity and the first air suction port; the second air suction port is communicated with the second working cavity and the second air suction port.
In the design, the number of the suction ports of the reciprocating compressor shell is two, namely a first suction port and a second suction port, the first suction port is used for communicating the first working cavity with the first suction port on the reciprocating compressor shell, uncompressed refrigerant enters the first working cavity through the first suction port after passing through the first suction port, the second suction port is used for communicating the second working cavity with the second suction port on the reciprocating compressor shell, and the uncompressed refrigerant enters the second working cavity through the second suction port after passing through the second suction port. The first air suction port and the second air suction port can be connected with two different evaporators, and uncompressed refrigerants flowing out of the two different evaporators respectively enter the first working cavity through the first air suction port and the second working cavity through the second air suction port. The first working cavity and the second working cavity of the reciprocating compressor can respectively adapt to different suction pressures and exhaust pressures, so that the working condition adaptability of the product is strong, and the compression requirements of refrigerants flowing out of different evaporators are further met. And the reciprocating compressor is provided with a first air suction port and a second air suction port which are independent, and the refrigerants in the first air suction port and the second air suction port can not be converged, so that the heat loss caused by the convergence of the refrigerants can be reduced, and the energy consumption is further reduced.
In one possible design, the reciprocating compressor further includes: the first exhaust channel is communicated with the first exhaust port and the first exhaust port; the first exhaust valve is arranged at the first exhaust channel; the second exhaust channel is communicated with the second exhaust port and the second exhaust port; and a second exhaust valve disposed at the second exhaust passage.
In the design, the reciprocating compressor further comprises a first exhaust channel and a second exhaust channel, the first exhaust channel is connected between the first exhaust port and the first air outlet port, the first exhaust channel is further provided with a first exhaust valve, and the first exhaust valve can control the on-off of the first exhaust channel, namely the first exhaust valve can control the on-off of the first exhaust port and the first air outlet port; the second exhaust channel is connected between the second exhaust port and the second air outlet port, the second exhaust channel is further provided with a second exhaust valve, and the second exhaust valve can control the on-off of the second exhaust channel, namely the second exhaust valve can control the on-off of the second exhaust port and the second air outlet port. The first exhaust valve and the second exhaust valve are used for controlling exhaust of the first working cavity and the second working cavity, so that exhaust of the first working cavity and the second working cavity is controlled respectively, and compression efficiency of the first working cavity and the second working cavity can be improved.
In one possible design, the first working chamber is a medium-pressure working chamber and the second working chamber is a high-pressure working chamber; the ratio of the displacement of the first working chamber to the displacement of the second working chamber is greater than or equal to 0.6 and less than or equal to 1.9.
In the design, the first working cavity is a medium-pressure working cavity, the second working cavity is a high-pressure working cavity, and the specific value of the displacement of the first working cavity and the displacement of the second working cavity is specifically limited, so that the specific value of the displacement of the first working cavity and the displacement of the second working cavity is greater than or equal to 0.6 and less than or equal to 1.9. Within the range, the condensing temperatures of the refrigerants in the first working cavity and the second working cavity are different, so that the optimal heat exchange effect can be achieved, and the energy efficiency of the reciprocating compressor is improved.
It will be appreciated that the displacement of the working chamber may be adjusted by setting the position of the piston in the cylinder and/or the length of the connecting rod.
According to a second aspect of the present invention, there is provided a refrigerating apparatus comprising a reciprocating compressor as set forth in any of the above-mentioned claims.
The refrigeration equipment provided by the invention comprises the reciprocating compressor provided by any technical scheme, so that the refrigeration equipment has all the beneficial effects of the reciprocating compressor, and the details are not repeated.
In one possible design, the refrigeration appliance further comprises: the first condenser is communicated with a first air outlet port of the reciprocating compressor; the first throttling element is communicated with the first condenser; the second condenser is communicated with a second air outlet port of the reciprocating compressor; the second throttling element is communicated with the second condenser; and the evaporator is communicated with the first throttling element, the second throttling element and the air suction port.
In the design, the refrigeration equipment further comprises a first condenser, a first throttling element, a second condenser, a second throttling element and an evaporator, wherein a first air outlet port of the reciprocating compressor is communicated with the first condenser, specifically, the first condenser can be connected with components such as a pipeline, one end of the first throttling element is connected with the first condenser, and the other end of the first throttling element is connected with the evaporator; a second air outlet port of the reciprocating compressor is communicated with a second condenser, and particularly can be connected with the second condenser through components such as a pipeline and the like, one end of a second throttling element is connected with the second condenser, the other end of the second throttling element is connected with an evaporator, and the evaporator is connected with an air inlet port of the reciprocating compressor; that is, the first working chamber and the second working chamber of the reciprocating compressor are simultaneously communicated with the suction port, so that the refrigerant is converged before entering the reciprocating compressor, thereby the suction port of the reciprocating compressor has a simple structure, the structure of the reciprocating compressor is simplified, thereby the production cost of the product is reduced, and because the reciprocating compressor sucks the refrigerant through one suction port, the refrigerant can be converged after flowing out of two evaporators connected with the reciprocating compressor, the connection structure of the reciprocating compressor is further simplified, and the cost of the refrigeration equipment is reduced. And, through only setting up an evaporator to two condensers, further simplified the linkage of the reciprocating compressor, reduced the cost of the product. And the condensation temperature of the second condenser is higher than that of the first condenser.
In one possible design, the refrigeration appliance further comprises: the first condenser is communicated with a first air outlet port of the reciprocating compressor; the first throttling element is communicated with the first condenser; a first evaporator communicating the first throttling element and a first suction port of the reciprocating compressor; the second condenser is communicated with a second air outlet port of the reciprocating compressor; the second throttling element is communicated with the second condenser; and a second evaporator communicating the second throttling element and a second suction port of the reciprocating compressor.
In the design, the refrigeration equipment further comprises a first condenser, a first throttling element, a first evaporator, a second condenser, a second throttling element and a second evaporator, wherein a first air outlet port of the reciprocating compressor is communicated with the first condenser, and specifically, the first air outlet port of the reciprocating compressor can be connected with the first condenser through components such as a pipeline; and a second air outlet port of the reciprocating compressor is communicated with the second condenser. In particular, the second condenser can be connected with a component such as a pipeline, one end of the second throttling element is connected with the second condenser, the other end of the second throttling element is connected with the second evaporator, so that the refrigerant flowing out of the second outlet port of the reciprocating compressor can flow into the second evaporator through the second throttling element, the refrigerant flows into the second inlet port of the reciprocating compressor from the second evaporator, wherein the condensing temperature of the second condenser is higher than that of the first condenser, the first working chamber and the second working chamber of the reciprocating compressor are respectively communicated with the first air suction port and the second air suction port, so that the first working chamber and the second working chamber of the reciprocating compressor can be respectively adapted to different suction pressure and discharge pressure, the working condition adaptability of the product is strong, and the compression requirements of refrigerants flowing out of different evaporators are further met. And the reciprocating compressor is provided with a first air suction port and a second air suction port which are independent, and the refrigerants in the first air suction port and the second air suction port can not be converged, so that the heat loss caused by the convergence of the refrigerants can be reduced, and the energy consumption is further reduced.
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:
figure 1 shows a schematic construction of a reciprocating compressor according to an embodiment of the present invention;
figure 2 shows a schematic construction of a reciprocating compressor according to another embodiment of the present invention;
figure 3 shows a schematic construction of a reciprocating compressor according to still another embodiment of the present invention;
figure 4 shows a schematic construction of a reciprocating compressor according to still another embodiment of the present invention;
figure 5 shows a schematic construction of a reciprocating compressor according to still another embodiment of the present invention;
figure 6 shows a schematic construction of a reciprocating compressor according to still another embodiment of the present invention;
FIG. 7 shows a schematic view of the connection structure of the refrigerating apparatus according to an embodiment of the present invention;
FIG. 8 is a schematic view showing a coupling structure of a refrigerating apparatus according to another embodiment of the present invention;
FIG. 9 is a graph illustrating the variation of the energy efficiency of a refrigeration unit according to an embodiment of the present invention in the displacement ratio of the working chambers of two cylinders;
fig. 10 is a schematic view showing a structure of a reciprocating compressor in the related art.
Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 8 is:
100 reciprocating compressor, 110 casing, 120 suction port, 122 first suction port, 124 second suction port, 130 first outlet port, 140 second outlet port, 150 cylinder, 152 first cylinder, 153 second cylinder, 154 first outlet port, 155 second outlet port, 156 first working chamber, 157 second working chamber, 158 first cylinder, 159 second cylinder, 160 piston, 161 first piston, 162 first plug, 163 second piston, 164 second plug, 166 first inlet port, 168 second inlet port, 170 crankshaft, 172 first link, 174 second link, 176 link, 180 first outlet passage, 182 first outlet valve, 190 second outlet passage, 192 second outlet valve, 200 first condenser, 300 second condenser, 400 first throttling element, 500 second throttling element, 600 evaporator, 620 first evaporator, 640 second evaporator.
The correspondence between reference numerals and part names in fig. 10 is:
700 'housing, 702' crankshaft, 704 'connecting rod, 706' cylinder, 708 'piston, 710' intake port, 712 'exhaust port, 714' throttling element, 716 'evaporator, 718' condenser.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
A reciprocating compressor and a refrigerating apparatus according to some embodiments of the present invention will be described with reference to fig. 1 to 9.
Example one
As shown in fig. 1, a first embodiment of the present invention provides a reciprocating compressor 100 including a housing 110, a cylinder 150, and a piston 160.
Wherein, the housing 110 is provided with a suction port 120, a first outlet port 130 and a second outlet port 140, the discharge pressures of the first outlet port 130 and the second outlet port 140 are different, the first outlet port 130 and the second outlet port 140 are not communicated, the piston 160 is arranged in the cylinder 150, the piston 160 is configured to reciprocate in the cylinder 150, and the cylinder 150 and the piston 160 enclose to form a first working chamber 156 and a second working chamber 157, that is, the piston 160 can reciprocate in the cylinder 150 to compress the refrigerant in the cylinder 150, the first working chamber 156 is communicated with the first outlet port 130, the second working chamber 157 is communicated with the second outlet port 140, that is, the refrigerant in the first working chamber 156 is discharged out of the reciprocating compressor 100 through the first outlet port 130 arranged on the housing 110, the refrigerant in the second working chamber 157 is discharged out of the reciprocating compressor 100 through the second outlet port 140 arranged on the housing 110, that is, the first working chamber 156 and the second working chamber 157 are independent from each other, and the first working chamber 156 and the second working chamber 157 can respectively adapt to different exhaust pressures, so that the function of double exhaust of a single cylinder 150 of a single reciprocating compressor 100 is realized, and energy consumption is effectively saved by using double rows of high and low temperature heat.
The reciprocating compressor 100 provided by the invention realizes the double exhaust function of the single cylinder 150 of the single reciprocating compressor 100 by arranging the first working cavity 156 and the second working cavity 157 which are not connected with each other on the basis of the existing single cylinder 150, and effectively saves energy consumption by utilizing double rows of high and low temperature heat; moreover, a single reciprocating compressor 100 can implement the double exhaust function that can be achieved by two reciprocating compressors 100 in the related art, thereby reducing the cost and saving the installation space. In addition, in the present invention, it is defined that the discharge pressures of the first gas outlet port 130 and the second gas outlet port 140 are different, and different discharge pressures can make the times when the refrigerant reaches the predetermined temperature and the required energy different, and it can be understood that, according to different usage requirements of the reciprocating compressor 100, different discharge pressures can be realized in the first working chamber 156 and the second working chamber 157, so that the condensers corresponding to the first working chamber 156 and the second working chamber 157 can efficiently realize a condensing function, thereby avoiding waste of energy, and significantly improving the energy efficiency of the reciprocating compressor 100.
Specifically, in the reciprocating compressor 100 provided by the present invention, the piston 160 makes reciprocating motion in the cylinder 150, a low-pressure refrigerant enters the reciprocating compressor 100 through the suction port 120, the refrigerant entering the first working chamber 156 completes the processes of suction, compression and exhaust in the first working chamber 156, and is exhausted through the first outlet port 130; the refrigerant entering the second working chamber 157 completes the processes of air suction, compression and exhaust in the second working chamber 157, and is exhausted through the second air outlet port 140; further, the first working chamber 156 and the second working chamber 157 work independently of each other, and the first working chamber 156 and the second working chamber 157 perform a suction, compression, and exhaust process simultaneously every time the piston 160 reciprocates in the cylinder 150.
Example two
In the above embodiment, the number of the air cylinders 150 is one, the air cylinder 150 is provided with the first cylinder 152 and the second cylinder 153, and the first cylinder 152 is communicated with the second cylinder 153; the number of the pistons 160 is one, the piston 160 is provided with a first plug 162 and a second plug 164, the first plug 162 is connected with the second plug 164, the first plug 162 is arranged in the first cylinder 152 to form the first working chamber 156, and the second plug 164 is arranged in the second cylinder 153 to form the second working chamber 157.
In this embodiment, the number of the cylinders 150 is one, the number of the pistons 160 is one, and one cylinder 150 and the first piston 161 jointly enclose to form the first working chamber 156 and the second working chamber 157, that is, the single cylinder 150 is provided in the reciprocating compressor 100 to cooperate with the single piston 160 to realize the double exhaust function, so that the double exhaust function of the single cylinder 150 is realized, and the cost of the reciprocating compressor 100 is further reduced. Specifically, a first cylinder 152 and a second cylinder 153 communicated with each other are disposed on the cylinder 150, a first plug 162 and a second plug 164 connected with each other are disposed on the piston 160, the first plug 162 is disposed in the first cylinder 152 to form a first working chamber 156, the first working chamber 156 is communicated with the first air outlet port 130, the second plug 164 is disposed in the second cylinder 153 to form a second working chamber 157, the second working chamber 157 is communicated with the second air outlet port 140, the refrigerant in the first working chamber 156 is discharged from the reciprocating compressor 100 through the first air outlet port 130 disposed on the casing 110, and the refrigerant in the second working chamber 157 is discharged from the reciprocating compressor 100 through the second air outlet port 140 disposed on the casing 110. Further, the reciprocating compressor 100 further includes a crankshaft 170, the crankshaft 170 is provided with an eccentric portion, one end of a connecting rod 176 is connected to the piston 160, the other end of the connecting rod 176 is connected to the eccentric portion of the crankshaft 170, and one rotation of the crankshaft 170 can drive the piston 160 to make one reciprocating motion in the cylinder 150 through the connecting rod 176, that is, the first plug 162 makes one reciprocating motion in the first cylinder 152, and the second plug 164 makes one reciprocating motion in the second cylinder 153, so as to drive the first working chamber 156 and the second working chamber 157 to complete one process of air suction, compression and exhaust.
In any of the above embodiments, as shown in fig. 1 and 2, first working chamber 156 is a medium pressure working chamber and second working chamber 157 is a high pressure working chamber; the ratio of the outer diameter of the first plug 162 to the outer diameter of the second plug 164 is 0.58 or more and 1.7 or less.
In this embodiment, the first working chamber 156 is a medium-pressure working chamber, the second working chamber 157 is a high-pressure working chamber, the first plug 162 and the second plug 164 are adapted to the first cylinder 152 and the second cylinder 153 with different inner diameters, and the ratio of the outer diameters of the first plug 162 and the second plug 164 is specifically defined, so that the ratio of the outer diameter of the first plug 162 to the outer diameter of the second plug 164 is greater than or equal to 0.58 and less than or equal to 1.7. Within this range, when the condensing temperatures of the refrigerants in the first working chamber 156 and the second working chamber 157 are different, the optimal heat exchange effect can be achieved, thereby improving the energy efficiency of the reciprocating compressor 100.
As shown in FIG. 1, in one embodiment, the ratio of the outer diameter D1 of the first plug 162 to the outer diameter D2 of the second plug 164 is greater than or equal to 0.58 and less than 1.
As shown in fig. 2, in one embodiment, the ratio of the outer diameter D1 of the first plug 162 to the outer diameter D2 of the second plug 164 is greater than or equal to 1 and less than or equal to 1.7.
In the above embodiment, the ratio of the outer diameters of the first plug 162 and the second plug 164 may be specifically defined according to the difference of the condensation temperatures of the refrigerants in the first working chamber 156 and the second working chamber 157, so that the optimal heat exchange effect can be achieved at different condensation temperatures, thereby improving the energy efficiency of the reciprocating compressor 100.
As shown in fig. 1 to 3, in any of the above embodiments, the reciprocating compressor 100 further includes: a first exhaust port 154, a second exhaust port 155, a first intake port 166 and a second intake port 168. The first exhaust port 154 and the second exhaust port 155 are arranged on the cylinder 150 of the reciprocating compressor 100, the first exhaust port 154 is communicated with the first working chamber 156 and the first air outlet port 130, and the second exhaust port 155 is communicated with the second working chamber 157 and the second air outlet port 140, so that the refrigerant compressed in the first working chamber 156 and the second working chamber 157 can be directly exhausted out of the cylinder 150 through the first exhaust port 154 and the second exhaust port 155 arranged on the cylinder 150, and then exhausted out of the reciprocating compressor 100 through the first air outlet port 130 and the second air outlet port 140, the exhaust efficiency is improved, and the energy consumption is reduced. Further, a first suction port 166 is provided at the cylinder 150 or the piston 160, and the refrigerant is introduced into the first working chamber 156 through the first suction port 166, and a second suction port 168 is provided at the cylinder 150 or the piston 160, and the refrigerant is introduced into the second working chamber 157 through the second suction port 168.
It is understood that the first suction port 166 may be provided either on the piston 160 to allow the refrigerant to pass through the first suction port 166 on the piston 160 into the first working chamber 156 or the first suction port 166 on the cylinder 150 to allow the refrigerant to pass through the first suction port 166 on the cylinder 150 into the first working chamber 156; the second suction port 168 may be formed in the piston 160 such that the refrigerant is introduced into the second working chamber 157 through the second suction port 168 formed in the piston 160, or the second suction port 168 may be formed in the cylinder 150 such that the refrigerant is introduced into the second working chamber 157 through the second suction port 168 formed in the cylinder 150. In any of the above embodiments, the reciprocating compressor 100 further comprises: a first exhaust passage 180, a first exhaust valve 182, a second exhaust passage 190, and a second exhaust valve 192. Specifically, the first exhaust channel 180 is connected between the first exhaust port 154 and the first exhaust port 130, and the first exhaust channel 180 is further provided with a first exhaust valve 182, where the first exhaust valve 182 can control the on/off of the first exhaust channel 180, that is, the first exhaust valve 182 can control the on/off of the first exhaust port 154 and the first exhaust port 130; the second exhaust channel 190 is connected between the second exhaust port 155 and the second air outlet port 140, the second exhaust channel 190 is further provided with a second exhaust valve 192, and the second exhaust valve 192 can control the on-off of the second exhaust channel 190, that is, the second exhaust valve 192 can control the on-off of the second exhaust port 155 and the second air outlet port 140. The exhaust of the first working chamber 156 and the second working chamber 157 is controlled by the first exhaust valve 182 and the second exhaust valve 192, so that the exhaust of the first working chamber 156 and the second working chamber 157 is respectively controlled, and the compression efficiency of the reciprocating compressor 100 can be improved.
As shown in fig. 1, in a specific embodiment, the number of the suction ports 120 is one, and the reciprocating compressor 100 further includes: a first intake port 166, the first intake port 166 being provided on the cylinder 150 or the piston 160 and communicating with the first working chamber 156 and the intake port 120; and a second suction port 168, the second suction port 168 being provided in the cylinder 150 or the piston 160 and communicating with the second working chamber 157 and the suction port 120.
In this embodiment, the number of the suction ports 120 of the casing 110 of the reciprocating compressor 100 is set to one, the cylinder 150 or the piston 160 is provided with the first suction port 166, the first suction port 166 communicates the first working chamber 156 with the suction port 120 of the casing 110 of the reciprocating compressor 100, so that the uncompressed refrigerant passes through the suction port 120 and then enters the first working chamber 156 through the first suction port 166, the cylinder 150 or the piston 160 is provided with the second suction port 168, the second suction port 168 communicates the second working chamber 157 with the suction port 120 of the casing 110 of the reciprocating compressor 100, so that the uncompressed refrigerant passes through the suction port 120 and then enters the second working chamber 157 through the second suction port 168, so that the refrigerants are merged before entering the reciprocating compressor 100, thereby simplifying the structure of the suction port 120 of the reciprocating compressor 100 and simplifying the structure of the reciprocating compressor 100, therefore, the production cost of the product is reduced, and since the reciprocating compressor 100 sucks the refrigerant through one suction port 120, the refrigerant can be converged after flowing out of two evaporators connected with the reciprocating compressor 100, the reciprocating compressor 100 can also be directly communicated with one evaporator without providing evaporators for two condensers respectively, thereby further simplifying the connection structure of the reciprocating compressor 100 and reducing the product cost.
As shown in fig. 3, in a specific embodiment, the number of the suction ports 120 is two, including a first suction port 122 and a second suction port 124, and the reciprocating compressor 100 further includes: a first suction port 166, the first suction port 166 being provided on the cylinder 150 or the piston 160 and communicating with the first working chamber 156 and the first suction port 122; and a second intake port 168, the second intake port 168 being provided in the cylinder 150 or the piston 160 and communicating with the second working chamber 157 and the second intake port 124.
In this embodiment, the number of the suction ports 120 of the casing 110 of the reciprocating compressor 100 is two, which are respectively the first suction port 122 and the second suction port 124, the cylinder 150 or the piston 160 is provided with the first suction port 166, the first suction port 166 connects the first working chamber 156 with the first suction port 122 of the casing 110 of the reciprocating compressor 100, so that the uncompressed refrigerant passes through the first suction port 122 and then enters the first working chamber 156 through the first suction port 166, the cylinder 150 or the piston 160 is provided with the second suction port 168, the second suction port 168 connects the second working chamber 157 with the second suction port 124 of the casing 110 of the reciprocating compressor 100, and the uncompressed refrigerant passes through the second suction port 124 and then enters the second working chamber 157 through the second suction port 168. The first suction port 122 and the second suction port 124 may be connected to two different evaporators, and uncompressed refrigerant flowing from the two different evaporators enters the first working chamber 156 through the first suction port 166 and enters the second working chamber 157 through the second suction port 168, respectively. The first working chamber 156 and the second working chamber 157 of the reciprocating compressor 100 can respectively adapt to different suction pressures and discharge pressures, so that the working condition adaptability of the product is strong, and further the compression requirements of refrigerants flowing out of different evaporators are met. In addition, the reciprocating compressor 100 has the first and second suction ports 122 and 124 that are independent from each other, and the refrigerants in the first and second suction ports 122 and 124 are not merged, so that a heat loss caused by merging of the refrigerants can be reduced, and thus, energy consumption can be reduced.
EXAMPLE III
As shown in fig. 4, on the basis of the first embodiment, the number of the cylinders is two, the two cylinders include a first cylinder 158 and a second cylinder 159, and the first cylinder 158 and the second cylinder 159 are both arranged in the housing 110; the number of pistons is two, and the two pistons include a first piston 161 and a second piston 163, the first piston 161 being disposed in a first cylinder 158 to form a first working chamber 156, and the second piston 163 being disposed in a second cylinder 159 to form a second working chamber 157.
In this embodiment, the number of cylinders is two, respectively, a first cylinder 158 and a second cylinder 159, the number of pistons is two, respectively, a first piston 161 and a second piston 163, the first piston 161 being disposed in the first cylinder 158 to form a first working chamber 156, and the second piston 163 being disposed in the second cylinder 159 to form a second working chamber 157. Further, the first cylinder 158 and the second cylinder 159 are simple in structure and easy to produce, and the first cylinder 158 and the second cylinder 159 can be made into cylinders with the same structure, that is, cylinders with the same structure and size are respectively used as the first cylinder 158 and the second cylinder 159, which is beneficial to mass production of cylinders and further reduces the production cost of the reciprocating compressor 100. Specifically, the first cylinder 158 and the second cylinder 159 are not communicated with each other, the first piston 161 is disposed in the first cylinder 158 in a reciprocating manner to compress the refrigerant in the first cylinder 158, specifically, the first piston 161 is disposed in the first cylinder 158 to form the first working chamber 156, the second piston 163 is disposed in the second cylinder 159 in a reciprocating manner to compress the refrigerant in the second cylinder 159, specifically, the second piston 163 is disposed in the second cylinder 159 to form the second working chamber 157. The first working chamber 156 is connected to the first gas outlet port 130, and the second working chamber 157 is connected to the second gas outlet port 140, that is, the refrigerant in the first working chamber 156 is discharged out of the reciprocating compressor 100 through the first gas outlet port 130 disposed on the housing 110, and the refrigerant in the second working chamber 157 is discharged out of the reciprocating compressor 100 through the second gas outlet port 140 disposed on the housing 110.
As shown in fig. 4 and 5, the reciprocating compressor 100 further includes a crankshaft 170, the crankshaft 170 is provided with an eccentric portion, one end of a first connecting rod 172 is connected to the piston, the other end of the first connecting rod is connected to the eccentric portion of the crankshaft 170, one end of a second connecting rod 174 is connected to the piston, the other end of the second connecting rod 174 is connected to the eccentric portion of the crankshaft 170, the first piston 161 can be driven by the first connecting rod 172 to reciprocate once in the first cylinder 158 during one rotation of the crankshaft 170, and the second piston 163 can be driven by the second connecting rod 174 to reciprocate once in the second cylinder 159. The crankshaft 170 is connected with the first connecting rod 172 and the second connecting rod 174 at the same time, that is, the first working chamber 156 and the second working chamber 157 can complete one suction, compression and exhaust process through the first connecting rod 172 and the second connecting rod 174 when the crankshaft 170 rotates for one circle, so that one crankshaft 170 of the single reciprocating compressor 100 can drive two cylinders to exhaust gas, and one crankshaft 170 can drive the first working chamber 156 and the second working chamber 157 to work, thereby effectively saving energy consumption.
As shown in FIG. 4, in one embodiment, the crankshaft 170; a first link 172, one end of the first link 172 being connected to the first piston 161, the other end of the first link 172 being connected to the crankshaft 170; and a second connecting rod 174, one end of the second connecting rod 174 is connected with the second piston 163, the other end of the second connecting rod 174 is connected with the crankshaft 170, the first connecting rod 172 and the second connecting rod 174 are distributed on the same side of the crankshaft 170, and the first cylinder 158 and the second cylinder 159 are also positioned on the same side of the crankshaft 170.
In this embodiment, the first and second connecting rods 172 and 174 and the first and second cylinders 158 and 159 are disposed on the same side of the first connecting rod 172, and the first and second connecting rods 172 and 174 are connected to the eccentric portion of the crankshaft 170. One rotation of crankshaft 170 may move first and second connecting rods 172 and 174 in the same direction, so as to achieve the simultaneous intake, compression and exhaust of first and second working chambers 156 and 157.
As shown in FIG. 5, in one embodiment, the crankshaft 170; a first link 172, one end of the first link 172 being connected to the first piston 161, the other end of the first link 172 being connected to the crankshaft 170; and a second connecting rod 174, one end of the second connecting rod 174 being connected to the second piston 163, the other end of the second connecting rod 174 being connected to the crankshaft 170, the first connecting rod 172 and the second connecting rod 174 being disposed at opposite sides of the crankshaft 170, and the first cylinder 158 and the second cylinder 159 being disposed at opposite sides of the crankshaft 170.
In this embodiment, the first connecting rod 172 and the first cylinder 158 are distributed on one side of the crankshaft 170, the second connecting rod 174 and the second cylinder 159 are distributed on the other side of the crankshaft 170, that is, the first connecting rod 172 and the second connecting rod 174 are distributed on two opposite sides of the crankshaft 170, and the first cylinder 158 and the second cylinder 159 are also located on two opposite sides of the crankshaft 170, so that one rotation of the crankshaft 170 can drive the first connecting rod 172 and the second connecting rod 174 to move in different directions simultaneously, so that the first working chamber 156 and the second working chamber 157 alternately perform suction, compression and exhaust processes, that is, when the first working chamber 156 is in a suction state, the second working chamber 157 is in a compression and exhaust state; first working chamber 156 is in a compressed and exhaust state and second working chamber 157 is in an intake state.
It is understood that the distribution of the first connecting rod 172, the second connecting rod 174 and the crankshaft 170 includes, but is not limited to, the above two connection modes, and the distribution of the first connecting rod 172 and the second connecting rod 174 and the crankshaft 170 may be selected differently according to different practical situations and product requirements.
Further, as shown in fig. 4 to 6, the reciprocating compressor 100 further includes: a first exhaust port 154 provided in a first cylinder 158, the first exhaust port 154 communicating with a first working chamber 156 and a first outlet port 130; a second exhaust port 155 provided at the second cylinder 159, the second exhaust port 155 communicating with the second working chamber 157 and the second outlet port 140; a first intake port 166 provided on the first cylinder 158 or the first piston 161; and a second intake port 168 provided in the second cylinder 159 or the second piston 163.
In this embodiment, by providing the first exhaust port 154 on the first cylinder 158 of the reciprocating compressor 100, and providing the first exhaust port 154 to communicate with the first working chamber 156 and the first exhaust port 130, the refrigerant compressed in the first working chamber 156 can be directly discharged out of the cylinder through the first exhaust port 154 provided on the first cylinder 158; the second discharge port 155 is provided in the second cylinder 159 of the reciprocating compressor 100, and the second discharge port 155 communicates with the second working chamber 157 and the second discharge port 140, so that the refrigerant compressed in the second working chamber 157 can be directly discharged out of the cylinder through the second discharge port 155 provided in the second cylinder 159. The refrigerant entering the reciprocating compressor 100 is compressed by the first working chamber 156 and the second working chamber 157 and then discharged out of the reciprocating compressor 100 through the first gas outlet port 130 and the second gas outlet port 140, thereby improving the exhaust efficiency and reducing the energy consumption. Further, a first suction port 166 is provided in the first cylinder 158 or the first piston 161, and the refrigerant is introduced into the first working chamber 156 through the first suction port 166, and a second suction port 168 is provided in the first cylinder 158 or the second piston 163, and the refrigerant is introduced into the second working chamber 157 through the second suction port 168.
It is understood that the first suction port 166 may be disposed on either the first piston 161 to allow the refrigerant to pass through the first suction port 166 on the first piston 161 into the first working chamber 156 or the first suction port 166 on the first cylinder 158 to allow the refrigerant to pass through the first suction port 166 on the first cylinder 158 into the first working chamber 156; the second suction port 168 may be formed in the second piston 163 such that the refrigerant is introduced into the second working chamber 157 through the second suction port 168 in the second piston 163, or the second suction port 168 may be formed in the second cylinder 159 such that the refrigerant is introduced into the second working chamber 157 through the second suction port 168 in the second cylinder 159.
In any of the above embodiments, the reciprocating compressor 100 further comprises: a first exhaust passage 180 communicating the first exhaust port 154 and the first exhaust port 130; a first exhaust valve 182 communicating with the first exhaust passage 180; a second exhaust channel 190 communicating the second exhaust port 155 and the second exhaust port 140; and a second exhaust valve 192 communicating with the second exhaust passage 190.
In this embodiment, the reciprocating compressor 100 further includes a first exhaust channel 180 and a second exhaust channel 190, the first exhaust channel 180 is connected between the first exhaust port 154 and the first exhaust port 130, and the first exhaust channel 180 is further provided with a first exhaust valve 182, the first exhaust valve 182 can control the on/off of the first exhaust channel 180, that is, the first exhaust valve 182 can control the on/off between the first exhaust port 154 and the first exhaust port 130; the second exhaust channel 190 is connected between the second exhaust port 155 and the second air outlet port 140, the second exhaust channel 190 is further provided with a second exhaust valve 192, and the second exhaust valve 192 can control the on-off of the second exhaust channel 190, that is, the second exhaust valve 192 can control the on-off of the second exhaust port 155 and the second air outlet port 140. The first exhaust valve 182 and the second exhaust valve 192 are used for controlling the exhaust of the first working chamber 156 and the second working chamber 157, so that the exhaust of the first working chamber 156 and the second working chamber 157 can be controlled respectively, and the compression efficiency of the first working chamber 156 and the second working chamber 157 can be improved.
As shown in fig. 4, in one embodiment, the number of the suction ports 120 is one, and the reciprocating compressor 100 further includes: a first suction port 166, the first suction port 166 being provided on the first cylinder 158 or the first piston 161 and communicating with the first working chamber 156 and the suction port 120; and a second intake port 168, the second intake port 168 being provided in the second cylinder 159 or the second piston 163 and communicating with the second working chamber 157 and the intake port 120.
In this embodiment, the number of the suction ports 120 of the casing 110 of the reciprocating compressor 100 is set to one, the first cylinder 158 or the first piston 161 is provided with a first suction port 166, the first suction port 166 communicates the first working chamber 156 with the suction port 120 of the casing 110 of the reciprocating compressor 100, so that the uncompressed refrigerant passes through the suction port 120 and then enters the first working chamber 156 through the first suction port 166, the first cylinder 158 or the second piston 163 is provided with a second suction port 168, the second suction port 168 communicates the second working chamber 157 with the suction port 120 of the casing 110 of the reciprocating compressor 100, so that the uncompressed refrigerant passes through the suction port 120 and then enters the second working chamber 157 through the second suction port 168, so that the refrigerants are merged before entering the reciprocating compressor 100, thereby making the suction port 120 of the reciprocating compressor 100 simple in structure, the structure of the reciprocating compressor 100 is simplified to reduce the production cost of the product, and since the reciprocating compressor 100 sucks the refrigerant through one suction port 120, the refrigerant is converged after flowing out of two evaporators connected with the reciprocating compressor 100, the reciprocating compressor 100 can be directly communicated with one evaporator without providing evaporators for two condensers respectively, the connection structure of the reciprocating compressor 100 is further simplified, and the product cost is reduced.
As shown in fig. 6, in a specific embodiment, the number of the suction ports 120 is two, including a first suction port 122 and a second suction port 124, and the reciprocating compressor 100 further includes: a first suction port 166, the first suction port 166 being provided on the first cylinder 158 or the first piston 161 and communicating with the first working chamber 156 and the first suction port 122; and a second intake port 168, the second intake port 168 being provided in the second cylinder 159 or the second piston 163 and communicating with the second working chamber 157 and the second intake port 124.
In this design, the number of the suction ports 120 of the casing 110 of the reciprocating compressor 100 is two, which are the first suction port 122 and the second suction port 124, the first cylinder 158 or the first piston 161 is provided with the first suction port 166, the first suction port 166 connects the first working chamber 156 with the first suction port 122 of the casing 110 of the reciprocating compressor 100, so that the uncompressed refrigerant passes through the first suction port 122 and then enters the first working chamber 156 through the first suction port 166, the second cylinder 159 or the second piston 163 is provided with the second suction port 168, the second suction port 168 connects the second working chamber 157 with the second suction port 124 of the casing 110 of the reciprocating compressor 100, so that the uncompressed refrigerant passes through the second suction port 124 and then enters the second working chamber 157 through the second suction port 168. The first suction port 122 and the second suction port 124 may be connected to two different evaporators, and uncompressed refrigerant flowing from the two different evaporators enters the first working chamber 156 through the first suction port 166 and enters the second working chamber 157 through the second suction port 168, respectively. The first working chamber 156 and the second working chamber 157 of the reciprocating compressor 100 can respectively adapt to different suction pressures and discharge pressures, so that the working condition adaptability of the product is strong, and further the compression requirements of refrigerants flowing out of different evaporators are met. In addition, the reciprocating compressor 100 has the first and second suction ports 122 and 124 that are independent from each other, and the refrigerants in the first and second suction ports 122 and 124 are not merged, so that a heat loss caused by merging of the refrigerants can be reduced, and thus, energy consumption can be reduced.
Example four
In any of the above embodiments, as shown in fig. 4, first working chamber 156 is a medium pressure working chamber and second working chamber 157 is a high pressure working chamber; the ratio of the displacements of first working chamber 156 to second working chamber 157 is equal to or greater than 0.6 and equal to or less than 1.9.
In this embodiment, the first working chamber 156 is a medium-pressure working chamber, the second working chamber 157 is a high-pressure working chamber, and the ratio of the displacements of the first working chamber 156 and the second working chamber 157 is specifically defined such that the ratio of the displacements of the first working chamber 156 and the second working chamber 157 is 0.6 or more and 1.9 or less. Within this range, the condensing temperatures of the refrigerants in the first working chamber 156 and the second working chamber 157 may be different from each other to achieve the optimal heat exchange effect, thereby improving the energy efficiency of the reciprocating compressor 100.
It will be appreciated that the displacement of the working chamber may be adjusted by setting the position of the piston in the cylinder and/or the length of the connecting rod.
EXAMPLE five
As shown in fig. 7 and 8, according to a second aspect of the present invention, there is provided a refrigerating apparatus including the reciprocating compressor 100 as set forth in any one of the above-mentioned technical solutions. The refrigeration equipment provided by the invention comprises the reciprocating compressor 100 proposed by any technical scheme, so that the refrigeration equipment has all the beneficial effects of the reciprocating compressor 100, and the details are not repeated.
EXAMPLE six
As shown in fig. 7, in the fifth embodiment, the refrigeration apparatus further includes a first condenser 200, a first throttling element 400, a second condenser 300, a second throttling element 500, and an evaporator 600, wherein the first outlet port 130 of the reciprocating compressor 100 is communicated with the first condenser 200, specifically, can be connected with the first condenser 200 through a pipe or the like, one end of the first throttling element 400 is connected with the first condenser 200, and the other end of the first throttling element 400 is connected with the evaporator 600; the second outlet port 140 of the reciprocating compressor 100 is communicated with the second condenser 300, and specifically, may be connected to the second condenser 300 through a pipe or the like, one end of the second throttling element 500 is connected to the second condenser 300, the other end of the second throttling element 500 is connected to the evaporator 600, and the evaporator 600 is connected to the suction port 120 of the reciprocating compressor 100; that is, the first working chamber 156 and the second working chamber 157 of the reciprocating compressor 100 are simultaneously communicated with the suction port 120, so that the refrigerant is merged before entering the reciprocating compressor 100, thereby simplifying the structure of the suction port 120 of the reciprocating compressor 100, simplifying the structure of the reciprocating compressor 100, and reducing the production cost of the product, and further, since the reciprocating compressor 100 sucks the refrigerant through one suction port 120, the refrigerant can be merged after flowing out of two evaporators 600 connected with the reciprocating compressor 100, further simplifying the connection structure of the reciprocating compressor, and reducing the cost of the refrigeration equipment. And, by providing only one evaporator 600 for the two condensers, the connection structure of the reciprocating compressor 100 is further simplified, and the cost of the product is reduced. Wherein, the condensation temperature of the second condenser 300 is higher than that of the first condenser 200.
EXAMPLE seven
As shown in fig. 8, in the fifth embodiment, the refrigeration equipment further includes a first condenser 200, a first throttling element 400, a first evaporator 620, a second condenser 300, a second throttling element 500, and a second evaporator 640, wherein the first air outlet port 130 of the reciprocating compressor 100 is communicated with the first condenser 200, specifically, may be connected with the first condenser 200 through a pipeline or the like, one end of the first throttling element 400 is connected with the first condenser 200, and the other end of the first throttling element 400 is connected with the first evaporator 620, so that the refrigerant flowing out of the first air outlet port 130 of the reciprocating compressor 100 may flow into the first evaporator 620 through the first throttling element 400, and then the refrigerant flows into the first air inlet port 122 of the reciprocating compressor 100 through the first evaporator 620; the second outlet port 140 of the reciprocating compressor 100 communicates with the second condenser 300. Specifically, the second outlet port 140 of the reciprocating compressor 100 may be connected to the second condenser 300 through a pipe or the like, one end of the second throttling element 500 is connected to the second condenser 300, and the other end of the second throttling element 500 is connected to the second evaporator 640, so that the refrigerant flowing out of the second outlet port 140 of the reciprocating compressor 100 may flow into the second evaporator 640 through the second throttling element 500, and the refrigerant may flow into the second inlet port 124 of the reciprocating compressor 100 from the second evaporator 640, wherein the condensing temperature of the second condenser 300 is higher than the condensing temperature of the first condenser 200, the first working chamber 156 and the second working chamber 157 of the reciprocating compressor 100 are respectively communicated with the first inlet port 122 and the second inlet port 124, so that the first working chamber 156 and the second working chamber 157 of the reciprocating compressor 100 may respectively adapt to different suction pressures and discharge pressures, the working condition adaptability of the product is strong, and the compression requirements on different refrigerants are further met. In addition, the reciprocating compressor has the first and second suction ports 122 and 124 which are independent, and the refrigerants in the first and second suction ports 122 and 124 are not merged, so that the heat loss caused by merging of the refrigerants can be reduced, and the energy consumption can be reduced.
Further, as shown in fig. 9, the present application limits the pressure of the first working chamber 156 to be lower than the pressure of the second working chamber 157, so as to achieve the purpose that the discharge pressures of the first working chamber 156 and the second working chamber 157 are different, fig. 9 shows an energy efficiency variation curve which changes with the change of the displacement ratio under different displacement ratios, as can be seen from fig. 9, as the displacement ratio increases, the energy efficiency tends to increase first and then decrease, and thus, it can be seen that the energy efficiency of the reciprocating compressor and the refrigeration equipment using the reciprocating compressor can be significantly improved by fully utilizing the double exhaust advantages of the double-cylinder reciprocating compressor.
In the present invention, the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means 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.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (13)

1. A reciprocating compressor, comprising:
the air conditioner comprises a shell, wherein the shell is provided with an air suction port, a first air outlet port and a second air outlet port, and the exhaust pressures of the first air outlet port and the second air outlet port are different;
a cylinder disposed within the housing;
the piston is arranged in the cylinder, the piston is configured to reciprocate in the cylinder, and the cylinder and the piston enclose to form a first working cavity and a second working cavity;
the first working cavity is not communicated with the second working cavity, the first working cavity is communicated with the first air outlet port, and the second working cavity is communicated with the second air outlet port;
the first working cavity and the second working cavity simultaneously complete the processes of one air suction, compression and exhaust every time the piston reciprocates in the cylinder;
when the number of the cylinders is one, a first cylinder body and a second cylinder body are arranged on each cylinder, and the first cylinder body is communicated with the second cylinder body;
the number of the pistons is one, a first plug body and a second plug body are arranged on the pistons, the first plug body is connected with the second plug body, the first plug body is arranged in the first cylinder body to form the first working cavity, and the second plug body is arranged in the second cylinder body to form the second working cavity;
when the number of the cylinders is two, the two cylinders comprise a first cylinder and a second cylinder, and the first cylinder and the second cylinder are both arranged in the shell;
the number of the pistons is two, the two pistons comprise a first piston and a second piston, the first piston is arranged in the first cylinder to form a first working cavity, and the second piston is arranged in the second cylinder to form a second working cavity.
2. The reciprocating compressor of claim 1, wherein when the number of cylinders is one, the reciprocating compressor further comprises:
a crankshaft;
and one end of the connecting rod is connected with the piston, and the other end of the connecting rod is connected with the crankshaft.
3. The reciprocating compressor of claim 1,
when the number of the cylinders is one, the first working cavity is a medium-pressure working cavity, and the second working cavity is a high-pressure working cavity;
the ratio of the outer diameter of the first plug body to the outer diameter of the second plug body is greater than or equal to 0.58 and less than or equal to 1.7.
4. The reciprocating compressor of claim 1, further comprising:
the first exhaust port is arranged on the cylinder and communicated with the first working cavity and the first air outlet port;
the second air outlet is arranged on the air cylinder and communicated with the second working cavity and the second air outlet port;
a first intake port provided on the cylinder or the piston;
a second intake port provided on the cylinder or the piston.
5. The reciprocating compressor of claim 1, wherein when the number of cylinders is two, the reciprocating compressor further comprises:
a crankshaft;
one end of the first connecting rod is connected with the first piston, and the other end of the first connecting rod is connected with the crankshaft;
and one end of the second connecting rod is connected with the second piston, and the other end of the second connecting rod is connected with the crankshaft.
6. The reciprocating compressor of claim 1, wherein when the number of cylinders is two, the reciprocating compressor further comprises:
the first air outlet is arranged on the first air cylinder and communicated with the first working cavity and the first air outlet port;
the second air outlet is arranged on the second air cylinder and communicated with the second working cavity and the second air outlet port;
a first intake port provided on the first cylinder or the first piston;
and a second suction port provided in the second cylinder or the second piston.
7. The reciprocating compressor of claim 4 or 6,
the number of the air suction ports is one, and the first air suction port is communicated with the first working cavity and the air suction ports;
the second air suction port is communicated with the second working cavity and the air suction port.
8. The reciprocating compressor of claim 4 or 6, wherein the number of the suction ports is two, including a first suction port and a second suction port;
the first air suction port is communicated with the first working cavity and the first air suction port;
the second air suction port is communicated with the second working cavity and the second air suction port.
9. The reciprocating compressor of claim 4 or 6, further comprising:
a first exhaust passage communicating the first exhaust port and the first exhaust port;
a first exhaust valve provided at the first exhaust passage;
a second exhaust passage communicating the second exhaust port and the second outlet port;
a second exhaust valve disposed at the second exhaust passage.
10. The reciprocating compressor of any one of claims 1 to 6,
the first working cavity is a medium-pressure working cavity, and the second working cavity is a high-pressure working cavity;
the ratio of the displacement of the first working chamber to the displacement of the second working chamber is greater than or equal to 0.6 and less than or equal to 1.9.
11. A refrigeration apparatus, comprising:
the reciprocating compressor of any one of claims 1 to 10.
12. The refrigeration appliance according to claim 11, further comprising:
a first condenser communicated with a first gas outlet port of the reciprocating compressor;
a first throttling element in communication with the first condenser;
a second condenser in communication with a second outlet port of the reciprocating compressor;
a second throttling element in communication with the second condenser;
an evaporator communicating the first throttling element, the second throttling element, and the suction port.
13. The refrigeration appliance according to claim 11, further comprising:
a first condenser communicated with a first gas outlet port of the reciprocating compressor;
a first throttling element in communication with the first condenser;
a first evaporator communicating the first throttling element and a first suction port of the reciprocating compressor;
a second condenser in communication with a second outlet port of the reciprocating compressor;
a second throttling element in communication with the second condenser;
a second evaporator communicating the second throttling element and a second suction port of the reciprocating compressor.
CN201911204774.5A 2019-11-29 2019-11-29 Reciprocating compressor and refrigeration equipment Active CN110985334B (en)

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CN105114289A (en) * 2015-08-05 2015-12-02 同济大学 Multi-discharge-pressure reciprocating compressor
CN109812395A (en) * 2017-11-20 2019-05-28 株式会社神户制钢所 Compressor
CN110107473A (en) * 2019-04-11 2019-08-09 浙江科力车辆控制系统有限公司 The oil-free piston type air compressor of used in new energy vehicles

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Publication number Priority date Publication date Assignee Title
JPH10227284A (en) * 1997-02-14 1998-08-25 Sanyo Electric Co Ltd Linear compressor
CN201330690Y (en) * 2009-01-06 2009-10-21 浙江鸿友压缩机制造有限公司 Multicylinder translational compression device

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Publication number Priority date Publication date Assignee Title
CN102679606A (en) * 2012-06-06 2012-09-19 合肥华凌股份有限公司 Refrigerating system and refrigerator with refrigerating system
CN105114289A (en) * 2015-08-05 2015-12-02 同济大学 Multi-discharge-pressure reciprocating compressor
CN109812395A (en) * 2017-11-20 2019-05-28 株式会社神户制钢所 Compressor
CN110107473A (en) * 2019-04-11 2019-08-09 浙江科力车辆控制系统有限公司 The oil-free piston type air compressor of used in new energy vehicles

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