CN210397096U - Double-cylinder variable-capacity compressor system, variable-capacity enthalpy-increasing system and air conditioner - Google Patents
Double-cylinder variable-capacity compressor system, variable-capacity enthalpy-increasing system and air conditioner Download PDFInfo
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- CN210397096U CN210397096U CN201920814052.0U CN201920814052U CN210397096U CN 210397096 U CN210397096 U CN 210397096U CN 201920814052 U CN201920814052 U CN 201920814052U CN 210397096 U CN210397096 U CN 210397096U
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Abstract
The utility model provides a double-cylinder variable-capacity compressor system, a variable-capacity enthalpy-increasing system and an air conditioner, wherein the double-cylinder variable-capacity compressor system comprises a double-cylinder variable-capacity compressor, and an exhaust port, an air suction port and a variable-capacity port are arranged on the double-cylinder variable-capacity compressor system; and the first control valve assembly is respectively communicated with the exhaust port, the suction port and the variable volume port and is used for controlling the communication between the variable volume port and the exhaust port so as to control the double-cylinder variable volume compressor to perform single-cylinder operation or control the communication between the variable volume port and the suction port so as to control the double-cylinder variable volume compressor to perform double-cylinder operation. The double-cylinder variable-capacity compressor system of the utility model controls the switching of the double-cylinder variable-capacity compressor between the single-cylinder operation and the double-cylinder operation through the first control valve component, so as to meet the requirements of the air conditioner on different places; the air conditioner can be prevented from running in a high-load state when running in a small space place, and electric energy is wasted.
Description
Technical Field
The utility model relates to an air conditioner field, in particular to double-cylinder variable volume compressor system, variable volume increase enthalpy system and air conditioner.
Background
With the continuous improvement of the living standard of people, the air conditioner is generally applied. The air conditioner is complex in use place, and the compressor in the conventional air conditioning system is a constant-volume compressor at present, so that the air conditioner is difficult to meet the requirements of places with small space and large space.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a double-cylinder variable capacity compressor system to solve the problem that air conditioning system among the prior art hardly satisfies the place in little space, big space simultaneously.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
a dual cylinder variable capacity compressor system comprising:
the double-cylinder variable-capacity compressor is provided with an exhaust port, an air suction port and a variable-capacity port;
a first control valve assembly in communication with the exhaust port, the suction port, and the variable volume port, respectively; the double-cylinder variable-capacity compressor is used for controlling the communication between the variable-capacity port and the exhaust port so as to control the double-cylinder variable-capacity compressor to perform single-cylinder operation; or the communication between the variable volume port and the air suction port is controlled to control the double-cylinder variable volume compressor to perform double-cylinder operation.
Furthermore, the first control valve assembly comprises a three-way valve, and a first port, a second port and a third port of the three-way valve are respectively communicated with the variable volume port, the suction port and the exhaust port.
Further, the first control valve assembly comprises two-way valves, wherein one of the two-way valves is arranged between the variable volume port and the exhaust port, and the other two-way valve is arranged between the variable volume port and the suction port.
Furthermore, the double-cylinder variable-capacity compressor comprises a variable-capacity tank, one end of the variable-capacity tank is communicated with the first interface of the three-way valve, the other end of the variable-capacity tank is communicated with the variable-capacity port of the double-cylinder variable-capacity compressor, and the variable-capacity tank is suitable for gas-liquid separation of a refrigerant entering the double-cylinder variable-capacity compressor from the variable-capacity port.
Further, the three-way valve is an electromagnetic valve.
Compared with the prior art, double-cylinder varactor compressor system have following advantage:
(1) the utility model discloses a double-cylinder variable-capacity compressor system in through setting up the intercommunication of the variable volume mouth and the gas vent of first control valve subassembly control double-cylinder variable-capacity compressor or the intercommunication of variable volume mouth and induction port, realize the switching between single cylinder operation and double-cylinder operation of double-cylinder variable-capacity compressor, when this double-cylinder variable-capacity compressor system is used in the air conditioner, can satisfy the demand of air conditioner to different places, for example when the air conditioner is worked in the operation place in big space, the load of air conditioner increases, two cylinders that need the compressor work simultaneously, in order to improve work efficiency, satisfy the demand; when the air conditioner works in a small-space operation place, the load of the air conditioner is reduced, and the compressor can meet the requirement by single-cylinder operation, so that the phenomenon that the air conditioner still operates in a high-load state when operating in the small-space place and wastes electric energy can be avoided;
(2) the variable capacity tank is arranged at the variable capacity port of the compressor in the double-cylinder variable capacity compressor system, gas-liquid separation is carried out on gaseous refrigerant flowing back to a pipeline connected with the variable capacity port of the compressor by the variable capacity tank, the liquid refrigerant is prevented from entering the compressor to generate phase change, the pressure at the variable capacity port is increased, and the variable capacity of the compressor is influenced, so that the normal work of the compressor is ensured;
another object of the utility model is to provide a varactor increases enthalpy system to solve the problem in the place that air conditioning system among the prior art hardly satisfies little space, big space simultaneously.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
a variable-capacity enthalpy-increasing system comprises an indoor heat exchanger, a throttling assembly, an outdoor heat exchanger and a four-way valve, wherein a fourth valve port of the four-way valve, the outdoor heat exchanger, the throttling assembly, the indoor heat exchanger and a third valve port of the four-way valve are sequentially connected; the double-cylinder variable volume compressor system also comprises any one of the double-cylinder variable volume compressor systems, wherein the exhaust port and the suction port of the double-cylinder variable volume compressor are respectively communicated with a first valve port and a second valve port of the four-way valve; the four-way valve controls the communication between the exhaust port and the outdoor heat exchanger and the communication between the suction port and the indoor heat exchanger, or controls the communication between the exhaust port and the indoor heat exchanger and the communication between the suction port and the outdoor heat exchanger so as to control the change of the flow direction of the refrigerant.
Further, an air supplement port of the double-cylinder variable displacement compressor is connected between pipelines connected with the outdoor heat exchanger and the indoor heat exchanger through a second control valve assembly; and a refrigerant in a pipeline connected with the outdoor heat exchanger and the indoor heat exchanger flows to the air supplementing port of the double-cylinder variable capacity compressor under the conduction state of the second control valve component.
Furthermore, the variable-capacity enthalpy-increasing system further comprises a flash evaporator, the throttling assembly comprises a first throttling element and a second throttling element, a first refrigerant port of the flash evaporator is communicated with the indoor heat exchanger through the first throttling element, a second refrigerant port of the flash evaporator is communicated with the outdoor heat exchanger through the second throttling element, a gas outlet of the flash evaporator is communicated with a gas supplementing port of the double-cylinder variable-capacity compressor through the second control valve assembly, and the second control valve assembly controls the conduction or blocking of a pipeline between the double-cylinder variable-capacity compressor and the flash evaporator.
Furthermore, the double-cylinder variable-capacity compressor further comprises an enthalpy increasing tank, wherein the enthalpy increasing tank is arranged at the air supplementing opening of the double-cylinder variable-capacity compressor and is suitable for performing gas-liquid separation on a refrigerant entering the double-cylinder variable-capacity compressor from the air supplementing opening.
Further, the double-cylinder variable-capacity compressor comprises a liquid storage tank, and the liquid storage tank is suitable for storing the refrigerant flowing out of the indoor heat exchanger during refrigeration or the refrigerant flowing out of the outdoor heat exchanger during heating.
Further, the second control valve assembly is a two-way valve.
The advantages of the variable-capacity enthalpy-increasing system and the double-cylinder variable-capacity compressor system are the same as those of the prior art, and are not repeated; compared with the prior art, varactor increase enthalpy system still have following advantage:
(1) in the variable-capacity enthalpy-increasing system, the refrigerant flowing to the air supplementing port of the compressor from the pipeline connected between the outdoor heat exchanger and the indoor heat exchanger is respectively injected into the first cylinder and the second cylinder from the first air supplementing port and the second air supplementing port, so that the pressure of the low-pressure refrigerant in the compressor is increased, the compressor is compressed and simultaneously injected with air for mixed cooling at medium and low pressure, the effect of enthalpy-increasing air supplementing is achieved, the air displacement of the compressor is increased, and the heating capacity of the air conditioner can be improved under the low-temperature environment; the change of the flow direction of a refrigerant of the air conditioner in a refrigerating mode or a heating mode is realized through the reversing operation of the four-way valve, so that the enthalpy-increasing air-supplying of the air conditioner can be ensured in different running modes, and the use requirement is met;
(2) varactor increase enthalpy system in still be equipped with and increase the enthalpy jar, increase the enthalpy jar and carry out gas-liquid separation from the refrigerant that the flash vessel gas outlet flows to store liquid refrigerant in increasing the enthalpy jar, further prevent that liquid refrigerant from getting into in the compressor, in order to guarantee that the compressor normally works.
Another object of the present invention is to provide an air conditioner to solve the problem that the air conditioning system in the prior art hardly satisfies the small space and the large space at the same time.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
an air conditioner comprising any of the above variable capacity enthalpy increasing systems.
The advantages of the air conditioner and the variable-capacity enthalpy-increasing system are the same compared with the prior art, and the description is omitted.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is a schematic diagram of a two-cylinder variable displacement compressor system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of another aspect of a two cylinder variable displacement compressor system in an embodiment of the present invention;
fig. 3 is a schematic diagram of the variable-capacity enthalpy-increasing system according to the embodiment of the present invention when the air conditioner performs cooling and heating;
Description of reference numerals:
1-a variable capacity compressor, 10-a first cylinder, 11-a second cylinder, 12-a liquid storage tank, 13-a variable capacity tank, 14-an enthalpy increasing tank, 2-a first control valve component, 21-a three-way valve, a-a first interface, b-a second interface, c-a third interface, a 3-four-way valve, d-a first valve port, e-a second valve port, f-a third valve port, g-a fourth valve port, 4-an outdoor heat exchanger, 41-a first port of the outdoor heat exchanger, 42-a second port of the outdoor heat exchanger, 5-a flash evaporator, 51-a first refrigerant port, 52-a second refrigerant port, 53-an air outlet, 6-an indoor heat exchanger, 61-a first port of the indoor heat exchanger, 62-a second port of the indoor heat exchanger, 7-a first throttling element, 8-a second throttling element, 9-a second control valve component, h-an exhaust port, j-an air supplement port, k-a variable volume port, m-an air suction port, n-an air return port, r-a first air supplement port and s-a second air supplement port.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "high", "low", and the like are based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Example 1
As shown in fig. 1, the present embodiment provides a dual cylinder variable displacement compressor system, including:
the double-cylinder variable-capacity compressor 1 is provided with an exhaust port h, an air suction port m and a variable-capacity port k;
a first control valve assembly 2 which is communicated with the exhaust port h, the suction port m and the variable volume port k respectively; the device is used for controlling the communication between the variable volume port k and the exhaust port h so as to control the double-cylinder variable volume compressor 1 to operate in a single cylinder; or the communication between the variable volume port k and the air suction port m is controlled to control the double-cylinder variable volume compressor 1 to perform double-cylinder operation.
The double-cylinder variable-capacity compressor 1 (hereinafter referred to as the compressor 1) comprises a first cylinder 10 and a second cylinder 11 which are independent of each other, the first cylinder 10 and the second cylinder 11 are communicated with an exhaust port h, an air suction port m of the compressor 1 is arranged on the first cylinder 10, and a variable-capacity port k is arranged on the second cylinder 11. When the variable volume port k is communicated with the exhaust port h, the second cylinder 11 does not perform compression work of the refrigerant and is in an idle state, only the first cylinder 10 performs compression work of the refrigerant at the moment, and the compressor 1 operates in a single cylinder; when the variable volume port k is communicated with the suction port m, the first cylinder 10 and the second cylinder 11 both perform refrigerant compression work, at the moment, the first cylinder 10 and the second cylinder 11 work simultaneously, and the compressor 1 operates in double cylinders.
Thus, the communication between the variable volume port k and the exhaust port h or the communication between the variable volume port k and the suction port m is controlled by arranging the first control valve component 2, so that the switching of the compressor 1 between single-cylinder operation and double-cylinder operation is realized; when the double-cylinder variable-capacity compressor system is used in an air conditioner, the requirements of the air conditioner on different places can be met, for example, when the air conditioner works in a large-space operation place, the load of the air conditioner is increased, and two cylinders of the compressor 1 are required to work simultaneously, so that the working efficiency is improved, and the requirements are met; when the air conditioner works in a small-space operation place, the load of the air conditioner is reduced, and the compressor 1 can meet the requirement by single-cylinder operation, so that the phenomenon that the air conditioner still operates in a high-load state when operating in the small-space place and wastes electric energy can be avoided.
Optionally, as shown in fig. 2, the first control valve assembly 2 includes two-way valves, one of the two-way valves is disposed between the volume-changing port k and the exhaust port h, and the other two-way valve is disposed between the volume-changing port k and the air suction port m; other valve types may be used, and are not illustrated in this embodiment.
When the first control valve assembly 2 includes two-way valves, one ends of the two-way valves are connected with each other and then communicated with the variable volume port k of the compressor 1, and the other ends of the two-way valves are respectively communicated with the exhaust port h and the suction port m of the compressor 1. And the two-way valves are used for respectively controlling the communication between the variable volume port k and the exhaust port h or the communication between the variable volume port k and the air suction port m.
In the present embodiment, it is preferable that the first control valve assembly 2 includes a three-way valve 21, the first port a, the second port b, and the third port c of the three-way valve 21 are respectively communicated with the variable-volume port k, the suction port m, and the discharge port h of the compressor 1, and the first port a of the three-way valve 21 is selectively communicated with the second port b or the third port c.
When the first port a is communicated with the third port c, the three-way valve 21 is in a first communication state, and the variable volume port k is communicated with the exhaust port h; when the first port a and the second port b are communicated, the three-way valve 21 is in a second communication state, and the variable-volume port k is communicated with the suction port m.
Thus, compared with the two-way valves, when the first control valve assembly 2 is the three-way valve 21, the control effect of the system is better, the cost is low, and the control is easier by adopting one valve, so that the compressor 1 can be switched between the single-cylinder operation and the double-cylinder operation conveniently.
Further, the three-way valve 21 is a solenoid valve.
When the three-way valve 21 is powered off, the first interface a and the third interface c are communicated, and the compressor 1 operates in a single cylinder; when the three-way valve 21 is electrified, the first port a is communicated with the second port b; the compressor 1 operates with two cylinders. Therefore, the switching of the compressor 1 between single-cylinder operation and double-cylinder operation is easier to control, and the operation is simple and convenient and easy to realize.
The compressor 1 sucks and compresses a low-pressure refrigerant flowing back to the suction port m into the compressor 1 to form a high-pressure refrigerant, and discharges the high-pressure refrigerant from the discharge port h. When the three-way valve 21 is in the first conduction state, the variable volume port k is communicated with the exhaust port h, part of the high-pressure refrigerant discharged from the exhaust port h passes through the three-way valve 21 and enters the second cylinder 11 from the variable volume port k, and the part of the high-pressure refrigerant is directly discharged from the exhaust port h without being compressed again in the second cylinder 11, so that the second cylinder 11 does not perform compression work on the refrigerant, namely the second cylinder 11 is in an idle running state, and the first cylinder 10 sucks the low-pressure refrigerant from the air suction port m, compresses the low-pressure refrigerant into the high-pressure refrigerant and discharges the high-pressure refrigerant from the exhaust port h, so that the single-cylinder operation of the compressor 1 is; when the three-way valve 21 is in the second conduction state, the variable volume port k is communicated with the suction port m, the first cylinder 10 and the second cylinder 11 respectively suck low-pressure refrigerants through the suction port m and the variable volume port k, compress the low-pressure refrigerants into high-pressure refrigerants, and discharge the high-pressure refrigerants from the exhaust port h, so that double-cylinder operation of the compressor 1 is realized.
As above-mentioned double-cylinder variable volume compressor system, wherein, double-cylinder variable volume compressor 1 includes a variable volume jar 13, and the one end of variable volume jar 13 and the first interface a intercommunication of three-way valve 21, the other end and double-cylinder variable volume compressor 1's variable volume mouth k intercommunication, variable volume jar 13 is suitable for and carries out gas-liquid separation to the refrigerant that gets into double-cylinder variable volume compressor 1 from variable volume mouth k.
As shown in fig. 1, one end of the variable volume tank 13 communicates with the exhaust port h or the intake port m through the three-way valve 21, and the other end communicates with the variable volume port k. When varactor jar 13 and induction port m intercommunication, the gaseous state refrigerant of backward flow toward induction port m has partly to enter into the pipeline of being connected with varactor mouthful k, and this gaseous state refrigerant can carry out gas-liquid separation through varactor jar 13 earlier before getting into compressor 1 from varactor mouthful k, is equivalent to carrying out the drying to gaseous state refrigerant.
Like this, can avoid sneaking into in the gaseous state refrigerant a small amount of liquid refrigerant and enter into compressor 1 to take place evaporation gasification in compressor 1, the pressure of increase varactor mouthful k department influences compressor 1 varactor, thereby has guaranteed compressor 1 normal work.
Example 2
With reference to fig. 3, the present embodiment provides a capacity-variable enthalpy-increasing system, which includes an indoor heat exchanger 6, a throttling assembly, an outdoor heat exchanger 4, and a four-way valve 3, wherein a fourth valve port g of the four-way valve 3, the outdoor heat exchanger 4, the throttling assembly, the indoor heat exchanger 6, and a third valve port f of the four-way valve 3 are sequentially connected; the double-cylinder variable volume compressor system also comprises the double-cylinder variable volume compressor system in the first embodiment, wherein an exhaust port h and an air suction port m of the double-cylinder variable volume compressor 1 are respectively communicated with a first valve port d and a second valve port e of the four-way valve 3; the four-way valve 3 controls the air outlet h to be communicated with the outdoor heat exchanger 4 and the air suction port m to be communicated with the indoor heat exchanger 6, or controls the air outlet h to be communicated with the indoor heat exchanger 6 and the air suction port m to be communicated with the outdoor heat exchanger 4 so as to control the change of the flow direction of the refrigerant.
The four-way valve 3 is provided with a first valve port d, a second valve port e, a third valve port f and a fourth valve port g, the first valve port d is communicated with one of the third valve port f and the fourth valve port g, and the second valve port e is communicated with the other of the third valve port f and the fourth valve port g; and the first valve port d, the second valve port e, the third valve port f and the fourth valve port g are respectively communicated with the exhaust port h, the suction port m, the second port 62 of the indoor heat exchanger 6 and the first port 41 of the outdoor heat exchanger 4, and the second port 42 of the outdoor heat exchanger 4 is connected with the first port 61 of the indoor heat exchanger 6 through a throttling component, so that a loop of a variable-capacity enthalpy-increasing system is formed.
Therefore, whether two cylinders in the compressor 1 are communicated or not is controlled by the first control valve component 2 in different conduction states, so that the switching of the compressor 1 between single-cylinder operation and double-cylinder operation is realized, and the requirements of the air conditioner on different places are met; the change of the flow direction of a refrigerant is realized by the compressor 1 through the reversing operation of the four-way valve 3 under the refrigeration mode or the heating mode of the air conditioner, so that the air conditioner can keep high-efficiency work under different operation modes, and the use requirement is met; meanwhile, the air conditioner can be prevented from running in a high-load state when running in a small space place, and electric energy is wasted.
The capacity-variable enthalpy-increasing system as described above is shown in fig. 3, wherein the air supplement port j of the two-cylinder capacity-variable compressor 1 is connected between the pipelines connected with the outdoor heat exchanger 4 and the indoor heat exchanger 6 through the second control valve assembly 9; the refrigerant in the pipeline connecting the outdoor heat exchanger 4 and the indoor heat exchanger 6 flows to the air supplement port j of the double-cylinder variable capacity compressor 1 under the conduction state of the second control valve component 9.
The air supplementing port j of the compressor 1 is divided into a first air supplementing port r and a second air supplementing port s, the first air supplementing port r is communicated with the first air cylinder 10, and the second air supplementing port s is communicated with the second air cylinder 11; when the compressor 1 works, after a refrigerant in a pipeline connected between the outdoor heat exchanger 4 and the indoor heat exchanger 6 flows to the air supplementing port j of the compressor 1, the refrigerant is respectively injected into the first cylinder 10 and the second cylinder 11 from the first air supplementing port r and the second air supplementing port s.
Therefore, the pressure of the low-pressure refrigerant in the compressor 1 is increased, the compressor 1 compresses and injects air for mixed cooling at medium and low pressure, the effect of enthalpy increasing and air supplying is achieved, the air displacement of the compressor 1 is increased, and the heating capacity of the air conditioner can be improved under the low-temperature environment.
When the compressor 1 operates in a single cylinder, a high-pressure refrigerant is sucked into the second cylinder 11, the refrigerant sprayed into the second cylinder 11 from the second air supplementing port s is still the high-pressure refrigerant after being mixed with the sucked high-pressure refrigerant, and is directly discharged from the air discharging port h, namely, the refrigerant sprayed into the second cylinder 11 is not compressed, and the refrigerant sprayed into the first cylinder 10 is mixed with a low-pressure refrigerant sucked into the first cylinder 10 to form a medium-low pressure refrigerant, and is compressed in the first cylinder 10 to form the high-pressure refrigerant which is discharged from the air discharging port h, so that the single-cylinder enthalpy increasing of the compressor 1 is realized; when the compressor 1 operates with two cylinders, the first cylinder 10 and the second cylinder 11 both suck low-pressure refrigerants, the refrigerants injected into the first cylinder 10 and the second cylinder 11 are respectively mixed with the low-pressure refrigerants in the two cylinders to form medium-low pressure refrigerants, compression work is carried out, high-pressure refrigerants are formed and discharged from the exhaust port h, and therefore double-cylinder enthalpy increase of the compressor 1 is achieved.
In this embodiment, the second control valve assembly 9 is preferably a two-way valve, so as to control the flow direction of the refrigerant in the pipeline.
Further, the second control valve assembly 9 is an electromagnetic two-way valve, and when the electromagnetic two-way valve is powered on, a pipeline between the compressor 1 and the flash evaporator 5 is conducted; when the electromagnetic two-way valve is powered off, a pipeline between the compressor 1 and the flash evaporator 5 is blocked.
Therefore, the electromagnetic valve has the switching characteristic, the conduction or the blocking of the refrigerant pipeline between the compressor 1 and the flash evaporator 5 can be controlled more accurately, and the operation is simple and convenient and is easy to realize.
As described above, with reference to fig. 3, the capacity-variable enthalpy-increasing system further includes a flash evaporator 5, the throttling component includes a first throttling element 7 and a second throttling element 8, a first refrigerant port 51 of the flash evaporator 5 is communicated with the indoor heat exchanger 6 through the first throttling element 7, a second refrigerant port 52 of the flash evaporator 5 is communicated with the outdoor heat exchanger 4 through the second throttling element 8, an air outlet 53 of the flash evaporator 5 is communicated with an air supplement port j of the double-cylinder capacity-variable compressor 1 through a second control valve component 9, and the second control valve component 9 controls the conduction or blocking of a pipeline between the double-cylinder capacity-variable compressor 1 and the flash evaporator 5.
The first throttling element 7 is arranged on a pipeline between the outdoor heat exchanger 4 and the flash evaporator 5, namely, a first refrigerant port 51 of the flash evaporator 5 is communicated with the indoor heat exchanger 6 through the first throttling element 7; the second throttling element 8 is arranged on a pipeline between the flash evaporator 5 and the indoor heat exchanger 6, namely, the second refrigerant port 52 of the flash evaporator 5 is communicated with the outdoor heat exchanger 4 through the second throttling element 8.
Therefore, when the load of the air conditioner is reduced and the compressor 1 is not required to increase enthalpy and supplement air, the second control valve assembly 9 can be controlled to block a pipeline between the compressor 1 and the flash evaporator 5 and stop increasing enthalpy and supplementing air so as to reduce unnecessary consumption of a refrigerant; and when the load at the air conditioner increases, need compressor 1 to increase the enthalpy tonifying qi, the pipeline between compressor 1 and the flash vessel 5 is switched on to accessible control second control valve subassembly 9, lets compressor 1 increase the enthalpy tonifying qi to guarantee that the air conditioner also can normal operating under high load, make the air conditioner can adapt to different operation place and environment, application range is wider.
As described above, with reference to fig. 3, the capacity-variable enthalpy-increasing system is further provided with an enthalpy-increasing tank 14, wherein the enthalpy-increasing tank 14 is disposed at an air supply port j of the double-cylinder capacity-variable compressor 1, and is adapted to perform gas-liquid separation on a refrigerant entering the double-cylinder capacity-variable compressor 1 from the air supply port j.
The refrigerant entering the compressor 1 from the air supply port j is sprayed into the cylinder to form high-speed airflow, and when the liquid refrigerant is mixed into the refrigerant entering from the air supply port j, the liquid refrigerant is sprayed into the cylinder and collides with the inner wall of the cylinder along with the high-speed airflow to cause liquid impact.
The enthalpy increasing tank 14 is arranged, so that the refrigerant flowing into the compressor 1 from the enthalpy increasing port j can enter the enthalpy increasing tank 14 firstly before entering the enthalpy increasing port j, gas-liquid separation or drying is performed in the enthalpy increasing tank 14, the liquid refrigerant is prevented from entering the compressor 1, the air cylinder of the compressor 1 is protected from being subjected to liquid impact easily, and the service life of the compressor 1 is prolonged.
As shown in fig. 3, the two-cylinder type variable capacity compressor 1 includes a liquid storage tank 12, and the liquid storage tank 12 is adapted to store a refrigerant flowing out from the indoor heat exchanger 6 during cooling or a refrigerant flowing out from the outdoor heat exchanger 4 during heating.
The accumulator 12 is provided with a return air port n, and the refrigerant flowing out of the indoor heat exchanger 6 during cooling of the air conditioner or the refrigerant flowing out of the outdoor heat exchanger 4 during heating flows back to the accumulator 12 through the return air port n to be stored.
Due to the arrangement of the liquid storage tank 12, on one hand, the refrigerant flowing back to the gas return port n can be collected for the circulation use of the variable-capacity enthalpy-increasing system, so that the use of the refrigerant is effectively saved, and the use cost is reduced; on the other hand, a small amount of liquid refrigerant mixed in the backflow refrigerant can be evaporated and gasified in the liquid storage tank 12, so that the liquid refrigerant is prevented from entering the cylinder of the compressor 1 and affecting the compressor 1 to compress the gaseous refrigerant, and the normal work of the variable-capacity enthalpy-increasing system is further ensured.
When the air conditioner performs a refrigeration cycle, the first port d and the fourth port g of the four-way valve 3 are communicated, and the second port e and the third port f are communicated.
When the compressor 1 increases enthalpy by double-cylinder operation, a normal-temperature low-pressure gaseous refrigerant is respectively sucked into the first cylinder 10 and the second cylinder 11 from the air suction port m and the variable volume port k, the gaseous refrigerant is compressed into a high-temperature high-pressure gaseous refrigerant in the first cylinder 10 and the second cylinder 11, the high-temperature high-pressure gaseous refrigerant is discharged from the exhaust port h, sequentially passes through the first valve port d and the fourth valve port g of the four-way valve 3, enters the outdoor heat exchanger 4 from the first port 41 of the outdoor heat exchanger for condensation, the high-temperature high-pressure gaseous refrigerant exchanges heat with the outdoor environment in the outdoor heat exchanger 4 to form a low-temperature medium-pressure liquid refrigerant, the low-temperature medium-pressure liquid refrigerant is discharged from the second port 42 of the outdoor heat exchanger, is throttled and depressurized by the first throttling element 7 to form a low-temperature medium-pressure gas-liquid two-phase refrigerant, the low-temperature medium-pressure gas-liquid two-phase, the low-temperature medium-pressure gaseous refrigerant separated from the flash evaporator 5 is discharged from the gas outlet 53, flows through the second control valve assembly 9, enters the enthalpy increasing tank 14 for drying, is respectively sprayed into the first cylinder 10 and the second cylinder 11 from the first air supplementing port r and the second air supplementing port s at the air supplementing port j, is compressed to form high-temperature high-pressure gaseous refrigerant, is discharged from the gas outlet h of the compressor 1, and continues to circulate; the low-temperature medium-pressure liquid refrigerant separated from the flash evaporator 5 flows out from the second refrigerant port 52, is throttled and depressurized by the second throttling element 8 to form a low-temperature low-pressure liquid refrigerant, enters the indoor heat exchanger 6 from the first port 61 of the indoor heat exchanger, exchanges heat with the indoor environment in the indoor heat exchanger 6 to generate phase change, refrigerates the indoor environment to form a normal-temperature low-pressure gas refrigerant, is discharged from the second port 62 of the indoor heat exchanger, sequentially passes through the third valve port f and the second valve port e of the four-way valve 3, returns to the liquid storage tank 12 from the gas return port n, enters the compressor 1 from the gas suction port m, and completes the refrigeration cycle during double-cylinder enthalpy increase.
When the compressor 1 operates in a single cylinder to increase enthalpy, the second cylinder 11 sucks high-temperature and high-pressure gaseous refrigerant from the variable volume port k, directly discharges the high-temperature and high-pressure gaseous refrigerant from the exhaust port h without compression, and the normal-temperature and low-pressure gaseous refrigerant is sucked into the first cylinder 10 only from the air suction port m, compressed into the high-temperature and high-pressure gaseous refrigerant in the first cylinder 10 and discharged from the exhaust port h; the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 1 sequentially flows through the four-way valve 3, the outdoor heat exchanger 4, the first throttling element 7 and the flash evaporator 5, the low-temperature and medium-pressure gaseous refrigerant separated from the flash evaporator 5 is respectively sprayed into the first cylinder 10 and the second cylinder 11 from the first air supplementing port r and the second air supplementing port s at the air supplementing port j, the low-temperature and medium-pressure gaseous refrigerant sprayed into the second cylinder 11 is still the high-temperature and high-pressure gaseous refrigerant after being mixed with the high-temperature and high-pressure gaseous refrigerant sucked into the second cylinder 11, the second cylinder 11 does not perform refrigerant compression work, the low-temperature and medium-pressure gaseous refrigerant sprayed into the first cylinder 10 is mixed with the low-temperature and low-pressure refrigerant in the first cylinder 10 and is compressed into the high-temperature and high-pressure gaseous refrigerant through the first cylinder 10, the high-temperature and high-pressure gaseous refrigerant discharged from the first cylinder 10 and the second cylinder 11, and (3) continuing to circulate, wherein the low-temperature medium-pressure liquid refrigerant separated from the flash evaporator 5 sequentially passes through the second throttling element 8, the indoor heat exchanger 6 and the four-way valve 3, then flows back into the liquid storage tank 12 from the air return port n, and then enters the compressor 1 from the air suction port m to complete the refrigeration cycle during single-cylinder enthalpy increase.
When the air conditioner performs a heating cycle, the first port d and the third port f of the four-way valve 3 are connected, and the second port e and the fourth port g are connected.
When the compressor 1 increases enthalpy by double-cylinder operation, a normal-temperature low-pressure gaseous refrigerant is respectively sucked into the first cylinder 10 and the second cylinder 11 from the air suction port m and the variable volume port k, the gaseous refrigerant is compressed into a high-temperature high-pressure gaseous refrigerant in the first cylinder 10 and the second cylinder 11, the high-temperature high-pressure gaseous refrigerant is discharged from the exhaust port h, sequentially passes through the first valve port d and the third valve port f of the four-way valve 3 and enters the indoor heat exchanger 6 from the second port 62 of the indoor heat exchanger, the high-temperature high-pressure gaseous refrigerant performs phase-change heat exchange with the indoor environment in the indoor heat exchanger 6 to heat the indoor environment, a low-temperature medium-pressure liquid refrigerant is formed after the heat exchange, the low-temperature medium-pressure liquid refrigerant is discharged from the first port 61 of the indoor heat exchanger and is throttled and depressurized by the second throttling element 8 to form a low-temperature medium-pressure gas-liquid two-phase refrigerant, and, gas-liquid separation is carried out in the flash evaporator 5, the low-temperature medium-pressure gaseous refrigerant separated from the flash evaporator 5 is discharged from the gas outlet 53, flows through the second control valve 9, enters the enthalpy increasing tank 14 for drying, is sprayed into the first cylinder 10 and the second cylinder 11 through the gas supplementing port j, is compressed into a high-temperature high-pressure gaseous refrigerant, is discharged from the gas outlet h of the compressor 1, and continues to circulate; the low-temperature medium-pressure liquid refrigerant separated from the flash evaporator 5 flows out from the first refrigerant port 51, is throttled and depressurized by the first throttling element 7 to form a low-temperature low-pressure liquid refrigerant, enters the outdoor heat exchanger 4 from the second port 42 of the outdoor heat exchanger, forms a normal-temperature low-pressure gaseous refrigerant after evaporation and heat exchange in the outdoor heat exchanger 4, is discharged from the first port 41 of the outdoor heat exchanger, sequentially passes through the fourth valve port g and the second valve port e of the four-way valve 3, returns to the liquid storage tank 12 from the gas return port n, and then enters the compressor 1 from the gas suction port m to complete the heating cycle during double-cylinder enthalpy increase.
When the compressor 1 operates in a single cylinder to increase enthalpy, the second cylinder 11 sucks high-temperature and high-pressure gaseous refrigerant from the variable volume port k, directly discharges the high-temperature and high-pressure gaseous refrigerant from the exhaust port h without compression, and the normal-temperature and low-pressure gaseous refrigerant is sucked into the first cylinder 10 only from the air suction port m, compressed into the high-temperature and high-pressure gaseous refrigerant in the first cylinder 10 and discharged from the exhaust port h; the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 1 sequentially flows through the four-way valve 3, the air-conditioning indoor heat exchanger 6, the second throttling element 8 and the flash evaporator 5, the low-temperature and medium-pressure gaseous refrigerant separated from the flash evaporator 5 is respectively sprayed into the first cylinder 10 and the second cylinder 11 from the first air supplementing port r and the second air supplementing port s at the air supplementing port j, the low-temperature and medium-pressure gaseous refrigerant sprayed into the second cylinder 11 is mixed with the high-temperature and high-pressure gaseous refrigerant sucked into the second cylinder 11, the high-temperature and high-pressure gaseous refrigerant is still the high-temperature and high-pressure gaseous refrigerant, the second cylinder 11 does not perform refrigerant compression, the low-temperature and medium-pressure gaseous refrigerant sprayed into the first cylinder 10 is mixed with the low-temperature and low-pressure refrigerant in the first cylinder 10, the high-temperature and high-pressure gaseous refrigerant is formed by compression of the first cylinder 10, the high-temperature and high-pressure gaseous refrigerant, and the circulation is continued, the low-temperature medium-pressure liquid refrigerant separated from the flash evaporator 5 sequentially passes through the first throttling element 7, the outdoor heat exchanger 4 and the four-way valve 3, then flows back into the liquid storage tank 12 from the air return port n, and enters the compressor 1 from the air suction port m, so that the heating circulation during single-cylinder enthalpy increase is completed.
In conclusion, the variable-capacity enthalpy-increasing system in the embodiment can realize the switching of four operation modes of single-cylinder enthalpy increasing, double-cylinder enthalpy increasing and double-cylinder enthalpy increasing, is suitable for an air conditioning system with a complex use place, can simultaneously meet the places of normal temperature, high temperature, low temperature, small space and ultra-large space, and can realize more energy-saving operation while meeting the user requirements.
Example 3
This embodiment provides an air conditioner to solve the problem that air conditioning system among the prior art hardly satisfies the place in little space, big space simultaneously, the technical scheme of adoption is: comprising a variable capacity enthalpy addition system as described in any of the above.
The air conditioner in the embodiment controls the communication between the variable volume port k and the exhaust port h or the communication between the variable volume port k and the air suction port m through the first control valve component 2, so that the switching of the compressor 1 between single-cylinder operation and double-cylinder operation is realized, and the requirements of the air conditioner on different places are met; meanwhile, the air conditioner can be prevented from running in a high-load state when running in a small space place, and electric energy is wasted; refrigerants in a pipeline connected between the outdoor heat exchanger 4 and the indoor heat exchanger 6 are respectively injected into the first air cylinder 10 and the second air cylinder 11 at the air supplementing port j, so that the pressure of the low-pressure refrigerants in the compressor 1 is increased, the compressor 1 compresses and injects air for mixed cooling at medium and low pressure, the effects of enthalpy increasing and air supplementing are achieved, meanwhile, the air displacement of the compressor 1 is also increased, and the heating capacity of the air conditioner can be improved under a low-temperature environment; in addition, set up varactor jar 13 in compressor 1's varactor mouth k department, varactor jar 13 carries out the drying to the gaseous state refrigerant that flows back on the pipeline that compressor 1 varactor mouth k is connected, prevents that liquid refrigerant from taking place the phase transition in getting into compressor 1, and the pressure of increase varactor mouth k department influences compressor 1 and is switched into the double-cylinder by the single cylinder to guaranteed compressor 1 and normally worked.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A dual cylinder variable capacity compressor system, comprising:
the double-cylinder variable-capacity compressor (1) is provided with an exhaust port (h), an air suction port (m) and a variable-capacity port (k);
a first control valve assembly (2) communicating with the exhaust port (h), the intake port (m), and the variable-volume port (k), respectively; the double-cylinder variable-capacity compressor is used for controlling the communication between the variable-capacity port (k) and the exhaust port (h) so as to control the double-cylinder variable-capacity compressor (1) to perform single-cylinder operation; or controlling the communication between the variable volume port (k) and the air suction port (m) so as to control the double-cylinder variable volume compressor (1) to perform double-cylinder operation.
2. The double cylinder variable displacement compressor system according to claim 1, wherein the first control valve assembly (2) comprises a three-way valve (21), and the first port (a), the second port (b), and the third port (c) of the three-way valve (21) are respectively communicated with the variable displacement port (k), the suction port (m), and the discharge port (h).
3. Double cylinder variable displacement compressor system according to claim 1, wherein the first control valve assembly (2) comprises two-way valves, one of which is arranged between the variable displacement port (k) and the exhaust port (h) and the other of which is arranged between the variable displacement port (k) and the intake port (m).
4. The double-cylinder variable volume compressor system according to claim 2, wherein the double-cylinder variable volume compressor (1) comprises a variable volume tank (13), one end of the variable volume tank (13) is communicated with the first port (a) of the three-way valve (21), the other end of the variable volume tank is communicated with the variable volume port (k) of the double-cylinder variable volume compressor (1), and the variable volume tank (13) is adapted to perform gas-liquid separation on a refrigerant entering the double-cylinder variable volume compressor (1) from the variable volume port (k).
5. A capacity-variable enthalpy-increasing system comprises an indoor heat exchanger (6), a throttling assembly, an outdoor heat exchanger (4) and a four-way valve (3), wherein a fourth valve port (g) of the four-way valve (3), the outdoor heat exchanger (4), the throttling assembly, the indoor heat exchanger (6) and a third valve port (f) of the four-way valve (3) are sequentially connected; the system is characterized in that the variable-capacity enthalpy-increasing system further comprises the double-cylinder variable-capacity compressor system of any one of claims 1 to 4, wherein the exhaust port (h) and the suction port (m) of the double-cylinder variable-capacity compressor (1) are respectively communicated with a first valve port (d) and a second valve port (e) of the four-way valve (3); the four-way valve (3) controls the air exhaust port (h) to be communicated with the outdoor heat exchanger (4) and the air suction port (m) to be communicated with the indoor heat exchanger (6), or controls the air exhaust port (h) to be communicated with the indoor heat exchanger (6) and the air suction port (m) to be communicated with the outdoor heat exchanger (4) so as to control the change of the flow direction of the refrigerant.
6. The system according to claim 5, characterized in that the charge port (j) of the two-cylinder variable capacity compressor (1) is connected between the lines to which the outdoor heat exchanger (4) and the indoor heat exchanger (6) are connected through a second control valve assembly (9); and the refrigerant in a pipeline connected with the outdoor heat exchanger (4) and the indoor heat exchanger (6) flows to the air supplementing port (j) of the double-cylinder variable capacity compressor (1) under the conduction state of the second control valve component (9).
7. The enthalpy increasing system according to claim 6, further comprising a flash evaporator (5), wherein the throttling assembly comprises a first throttling element (7) and a second throttling element (8), a first refrigerant port (51) of the flash evaporator (5) communicates with the indoor heat exchanger (6) through the first throttling element (7), a second refrigerant port (52) of the flash evaporator (5) communicates with the outdoor heat exchanger (4) through the second throttling element (8), an air outlet (53) of the flash evaporator (5) communicates with the air supplementing port (j) of the two-cylinder variable capacity compressor (1) through the second control valve assembly (9), and the second control valve assembly (9) controls the conduction or blocking of a pipeline between the variable capacity compressor (1) and the flash evaporator (5).
8. The system according to any one of claims 6 to 7, wherein the twin-cylinder variable capacity compressor (1) further comprises an enthalpy increasing tank (14), and the enthalpy increasing tank (14) is disposed at the air supply port (j) of the twin-cylinder variable capacity compressor (1) and adapted to perform gas-liquid separation on the refrigerant entering the twin-cylinder variable capacity compressor (1) from the air supply port (j).
9. The system according to any of the claims 5 to 7, wherein said twin-cylinder variable capacity compressor (1) further comprises a liquid tank (12), said liquid tank (12) being adapted to store the refrigerant flowing from said indoor heat exchanger (6) during cooling or the refrigerant flowing from said outdoor heat exchanger (4) during heating.
10. An air conditioner comprising the variable capacity enthalpy addition system according to any one of claims 5 to 9.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107500A (en) * | 2019-05-31 | 2019-08-09 | 宁波奥克斯电气股份有限公司 | A kind of double-cylinder variable-capacity compressor system, transfiguration increasing enthalpy system and control method |
| CN111594443A (en) * | 2020-05-12 | 2020-08-28 | 珠海凌达压缩机有限公司 | Compressor assembly, air conditioning system comprising same and control method |
| CN112728729A (en) * | 2021-02-23 | 2021-04-30 | 珠海格力节能环保制冷技术研究中心有限公司 | Air conditioning system and air conditioner with same |
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2019
- 2019-05-31 CN CN201920814052.0U patent/CN210397096U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107500A (en) * | 2019-05-31 | 2019-08-09 | 宁波奥克斯电气股份有限公司 | A kind of double-cylinder variable-capacity compressor system, transfiguration increasing enthalpy system and control method |
| CN111594443A (en) * | 2020-05-12 | 2020-08-28 | 珠海凌达压缩机有限公司 | Compressor assembly, air conditioning system comprising same and control method |
| CN112728729A (en) * | 2021-02-23 | 2021-04-30 | 珠海格力节能环保制冷技术研究中心有限公司 | Air conditioning system and air conditioner with same |
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