CN109269157B - Evaporator, ejector reflux system of evaporator and air conditioning unit - Google Patents
Evaporator, ejector reflux system of evaporator and air conditioning unit Download PDFInfo
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- CN109269157B CN109269157B CN201811297195.5A CN201811297195A CN109269157B CN 109269157 B CN109269157 B CN 109269157B CN 201811297195 A CN201811297195 A CN 201811297195A CN 109269157 B CN109269157 B CN 109269157B
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 10
- 238000010992 reflux Methods 0.000 title abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 199
- 238000002347 injection Methods 0.000 claims abstract description 33
- 239000007924 injection Substances 0.000 claims abstract description 33
- 238000007667 floating Methods 0.000 claims description 13
- 239000003507 refrigerant Substances 0.000 claims description 12
- 230000000903 blocking effect Effects 0.000 claims description 7
- 230000005484 gravity Effects 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 4
- 238000010079 rubber tapping Methods 0.000 claims 2
- 239000000243 solution Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2339/00—Details of evaporators; Details of condensers
- F25B2339/02—Details of evaporators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/23—Separators
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention relates to an evaporator, an injection reflux system of the evaporator and an air conditioning unit, wherein a high liquid taking port and a low liquid taking port are arranged on the side wall of the evaporator; an opening and closing assembly for opening and closing the high liquid taking port and the low liquid taking port is arranged in the evaporator; the evaporator is internally provided with a control component for controlling the opening and closing states of the opening and closing component on the high liquid taking port and the low liquid taking port. The high liquid taking port and the low liquid taking port are opened and closed through the opening and closing component, only one liquid taking port is always communicated with the outside through the control component, and then the liquid taking port communicated with the outside is controlled and selected through the control component; the evaporator can be guaranteed to have higher oil return efficiency at different liquid levels.
Description
Technical Field
The invention relates to the technical field of evaporators, in particular to an evaporator, an injection reflux system of the evaporator and an air conditioning unit.
Background
With the development of air conditioning technology, the flooded centrifugal chiller and the flooded screw chiller are widely applied to large-scale commercial use nowadays, meanwhile, the oil return problem is always an important technical problem for the two types of chiller, and the oil return of the flooded chiller generally comprises two parts, namely a main oil return way and an injection oil return way, and the injection oil return has an important effect on the stability of the reliability of the system.
At present, common injection oil return is fixed-point fixed-height oil return, the wall of an evaporator tube is provided with two liquid taking ports, one is a high liquid level liquid taking port, and the other is a low liquid level liquid taking port. Although can play supplementary main line oil return effect, when the liquid level is above high liquid level, the liquid level is got most refrigerant that the liquid mouth was got to low liquid level has influenced oil return efficiency, and when the liquid level was got between the liquid mouth at high and low, because the volume of penetrating is certain, high liquid mouth of getting can inhale gaseous refrigerant, influences low liquid mouth and gets the liquid volume to influence and penetrate oil return efficiency, and then influence the refrigerating output of whole refrigeration cycle.
Therefore, it is desirable to provide an evaporator, an ejector return system for the evaporator, and an air conditioning unit to address the deficiencies of the prior art.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides an evaporator, an injection reflux system of the evaporator and an air conditioning unit.
An evaporator for the heat-dissipating type of a heat-dissipating type evaporator,
the side wall of the evaporator is provided with a high liquid taking port and a low liquid taking port;
an opening and closing assembly for opening and closing the high liquid taking port and the low liquid taking port is arranged in the evaporator;
the evaporator is internally provided with a control component for controlling the opening and closing states of the opening and closing component on the high liquid taking port and the low liquid taking port.
Further, the low liquid taking port is arranged below the high liquid taking port.
Further, the opening and closing assembly includes a select gate that switches between a first state and a second state;
the first state comprises closing the high liquid taking port and opening the low liquid taking port;
the second state includes closing the low access port and opening the high access port.
Further, the selection gate comprises a first baffle plate which is connected with each other and is used for closing the high liquid taking port and a second baffle plate which is connected with each other and is used for closing the low liquid taking port.
Further, the first baffle and the second baffle are connected to the same rotating shaft; the rotating shaft can enable the selection gate to be switched between the first state and the second state through rotation.
Further, an angle between the first baffle plate and the second baffle plate is larger than 0 degrees and smaller than 180 degrees; the rotating shaft is horizontally arranged and is rotationally connected with the side wall of the evaporator between the high liquid taking port and the low liquid taking port; the weight of the second baffle is greater than the weight of the first baffle.
Further, the angle between the first baffle plate and the second baffle plate is 120-150 degrees.
Further, an angle between the first baffle and the second baffle is 135 °.
Further, the first baffle plate and the second baffle plate are rectangular plates with the same thickness respectively; the width of the first baffle is equal to the length of the width of the second baffle and is connected with the rotating shaft; the length of the first baffle is smaller than that of the second baffle.
Further, a first plugging piece matched with the high liquid taking port is arranged on one side of the first baffle;
one side of the second baffle is provided with a second blocking piece matched with the low liquid taking port.
Further, the control assembly comprises a traction member connected with the side wall of the evaporator above the high liquid taking port and a floating member connected with the free end of the traction member.
Further, when the liquid level in the evaporator exceeds the lowest point of the high liquid taking port, the buoyancy of the liquid is larger than the gravity of the floating piece; when the liquid level in the evaporator is lower than the lowest point of the high liquid taking port, the floating piece is connected with the first baffle and controls the first baffle to close the high liquid taking port.
Further, the opening and closing assembly comprises a high access port door for closing the high access port and a low access port door for closing the low access port.
Further, a liquid level sensor is arranged in the evaporator; the control assembly comprises a first controller and a second controller which are respectively in communication connection with the liquid level sensor;
the first controller is used for controlling the high liquid taking port door to close or open the high liquid taking port;
the second controller is used for controlling the low liquid taking port door to close or open the low liquid taking port.
Based on the same thought, the invention also provides an injection reflux system of the evaporator, and the injection reflux system of the evaporator comprises the evaporator.
Further, the injection reflux system of the evaporator comprises the evaporator, a first injector, an oil-liquid separator and a second injector;
the low liquid taking port is communicated with the low injection pipe; the high liquid taking port is communicated with the high injection pipe; the other ends of the low injection pipe and the high injection pipe are respectively communicated with the total injection pipe, and the other end of the total injection pipe is communicated with the inlet of the first injector; the outlet of the first ejector is communicated with the inlet of the oil-liquid separator, and the power port of the first ejector is communicated with the high-pressure gaseous or liquid refrigerant output end; the outlet of the separator is communicated with the inlet of the second ejector; the outlet of the second ejector is communicated with the air suction port of the oil tank or the compressor, and the power port of the second ejector is communicated with the high-pressure gaseous or liquid refrigerant output end.
Based on the same thought, the invention also provides an air conditioning unit, which comprises the injection reflux system of the evaporator.
Compared with the closest prior art, the technical scheme of the invention has the following advantages:
according to the evaporator provided by the technical scheme, the high liquid taking port and the low liquid taking port are opened and closed through the opening and closing component, only one liquid taking port is always communicated with the outside through the control component, and then the liquid taking port communicated with the outside is selected through the control component; when the liquid level is above the high liquid level, only the high liquid taking port is communicated with the outside, so that the influence of the refrigerant in the liquid level near the low liquid taking port on the efficiency is avoided; the evaporator can be guaranteed to have higher oil return efficiency at different liquid levels as a whole.
Drawings
FIG. 1 is a schematic diagram of a structure for closing a liquid take-up port according to some embodiments of the present invention;
FIG. 2 is a schematic diagram of a structure for closing a liquid-high access port according to some embodiments of the present invention;
FIG. 3 is a schematic view of a structure for closing the high access opening according to other embodiments of the present invention;
FIG. 4 is a schematic view of a structure for closing the high access opening according to another embodiment of the present invention.
Wherein, 1-the side wall of the evaporator; 2-a high liquid taking port; 3-a low liquid taking port; 4-a first baffle; 5-a second baffle; 6-rotating shaft; 7-a first closure; 8-a second closure member; 9-traction piece; 10-a float; 11-high injection pipe; 12-low injection pipe.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 4, the present invention provides an evaporator,
the side wall 1 of the evaporator is provided with a high liquid taking port 2 and a low liquid taking port 3;
an opening and closing assembly for opening and closing the high liquid taking port 2 and the low liquid taking port 3 is arranged in the evaporator;
the evaporator is internally provided with a control component for controlling the opening and closing states of the opening and closing component on the high liquid taking port 2 and the low liquid taking port 3.
The high liquid taking port 2 and the low liquid taking port 3 can be opened and closed by arranging an opening and closing component, only one liquid taking port is always communicated with the outside by controlling the high liquid taking port 2 and the low liquid taking port 3 through the control component, and then the liquid taking port communicated with the outside is controlled and selected through the control component; when the liquid level is above the lowest point of the high liquid taking port 2, only the high liquid taking port 2 is communicated with the outside, so that the influence of the refrigerant in the liquid level near the low liquid taking port 3 on the efficiency is avoided, when the liquid level is between the low liquid taking port 3 and the high liquid taking port 2, only the low liquid taking port 3 is communicated with the outside, the high liquid taking port 2 is prevented from sucking the gaseous refrigerant, and the liquid taking amount of the low liquid taking port 3 is further ensured; the evaporator can be guaranteed to have higher oil return efficiency at different liquid levels as a whole.
In some embodiments of the present invention, the low liquid-taking port 3 is disposed below the high liquid-taking port 2; the high liquid taking port 2 and the low liquid taking port 3 are positioned on the same side wall, so that the assembly can be conveniently installed and controlled.
In some embodiments of the invention, the first form of the opening and closing assembly is as follows: the opening and closing assembly comprises a selection gate which is switched between a first state and a second state;
the first state comprises closing the high liquid taking port 2 and opening the low liquid taking port 3;
the second state includes closing the low access 3 and opening the high access 2.
In some embodiments of the invention, the selection gate comprises a first shutter 4 connected to each other for closing the high access opening 2 and a second shutter 5 for closing the low access opening 3.
In some embodiments of the invention, the first baffle 4 and the second baffle 5 are connected to the same rotation shaft 6; the rotation shaft 6 can be rotated to switch the selection gate between the first state and the second state.
The angle between the first baffle 4 and the second baffle 5 is more than 0 degrees and less than 180 degrees; the rotating shaft 6 is horizontally arranged and is in rotating connection with the side wall 1 of the evaporator between the high liquid taking port 2 and the low liquid taking port 3; the weight of the second baffle 5 is greater than the weight of the first baffle 4. Because axis of rotation 6 with the lateral wall 1 of evaporimeter rotates to be connected, consequently the select gate can be in the first baffle 4 be connected with the lateral wall and the second baffle 5 be connected with the within range of lateral wall rotate, can realize closing high liquid taking port 2 through the rotation, and low liquid taking port 3 is with the state of external intercommunication or close low liquid taking port 3, high liquid taking port 2 is with the state of external intercommunication. Because the mass of the second baffle 5 is larger than that of the first baffle 4, in the interference-free state, the selection gate is in a state of closing the low liquid taking port 3 and communicating the high liquid taking port 2 with the outside; the high liquid taking port 2 is closed, and the low liquid taking port 3 is communicated with the outside and can be realized only by the control of the control component.
In some embodiments of the invention, the angle between the first baffle 4 and the second baffle 5 is 120 ° -150 °. The angle between the first baffle 4 and the second baffle 5 is in the range of 120-150 degrees, so that when one of the high liquid taking port 2 and the low liquid taking port 3 is closed, the other liquid taking port can be communicated with the outside, and in the switching process of the two states, the rotation amount of the rotating shaft 6 is not too large, so that the switching between the two states keeps higher efficiency.
In some embodiments of the invention, the angle between the first baffle 4 and the second baffle 5 is 135 °. The angle between the first baffle 4 and the second baffle 5 is at an angle selected to be optimally effective in the range of 120 deg. -150 deg..
In some embodiments of the present invention, the first baffle 4 and the second baffle 5 are rectangular plates with the same thickness, respectively; the width of the first baffle 4 is equal to the length of the width of the second baffle 5 and is connected with the rotating shaft 6; the length of the first baffle 4 is smaller than the length of the second baffle 5. The first baffle 4 and the second baffle 5 are designed into the same shape and the same thickness, and the weight of the two can be controlled by controlling the only variable length of the first baffle and the second baffle, so that the method is convenient and simple and convenient to operate.
In some embodiments of the present invention, one side of the first baffle 4 and one side of the second baffle 5 are respectively provided with a blocking piece matched with the high liquid taking port 2 and the low liquid taking port 3, that is, one side of the first baffle 4 facing the high liquid taking port 2 is provided with a first blocking piece 7, and one side of the second baffle 5 facing the low liquid taking port 3 is provided with a second blocking piece 8; when the first baffle 4 is connected with the side wall 1 of the evaporator to close the high liquid taking port 2, the first blocking piece 7 is arranged in the high liquid taking port 2 and used for closing the high liquid taking port 2; when the second gear 5 is connected with the side wall 1 of the evaporator to close the low liquid taking port 3, the second blocking piece 8 is arranged in the low liquid taking port 3 to close the low liquid taking port 3. The arrangement of the plugging piece increases the sealing performance when the selection gate closes the high liquid taking port 2 or the low liquid taking port 3, and greatly improves the sealing effect.
In some embodiments of the invention, the control assembly that mates with the first version of the opening and closing assembly, the select gate, is in the form of: the control assembly comprises a traction piece 9 connected with the side wall above the high liquid taking port 2 and a floating piece 10 connected with the free end of the traction piece 9; the connection point of the traction piece 9 and the side wall is positioned right above the central line of the high liquid taking port 2, the traction piece is a suspension line, and the traction piece is made of metal or fiber ropes.
In some embodiments of the present invention, when the liquid level in the evaporator exceeds the lowest point of the high liquid-taking port 2, the buoyancy of the liquid is greater than the gravity of the floating member 10, so that the floating member 10 is in a floating state at this time, and leaves the first baffle 4, and since the mass of the first baffle 4 is smaller than that of the second baffle 5, the second baffle 5 is connected with the low liquid-taking port 3, the low liquid-taking port 3 is closed, and the high liquid-taking port 2 is communicated with the outside at this time, so that only the high liquid-taking port 2 is guaranteed to take liquid, the problem that under normal conditions, the high liquid-taking port and the low liquid-taking port simultaneously take liquid, and the low liquid-taking port 3 basically ejects most of refrigerants is solved, and the ejection oil return efficiency is greatly improved; when the liquid level in the evaporator is lower than the lowest point of the high liquid taking port 2, at this time, the floating piece 10 is only acted by gravity and the pulling force of the pulling piece 9, the pulling force of the pulling piece 9 is decomposed into a horizontal part and a vertical part, the vertical part is balanced with the gravity, the force of the horizontal part controls the floating piece 10 to be connected with the first baffle 4 and controls the first baffle 4 to close the high liquid taking port 2, at this time, the low liquid taking port 3 is communicated with the outside, and the length of the pulling piece 9 enables the gravity of the floating piece 10 to be in contact with the surface of the first baffle 4 when the vertical part of the pulling force is balanced.
As shown in fig. 1 and 2, in some embodiments of the invention, the side wall 1 of the evaporator is a vertical planar plate; the float 10 is spherical.
As shown in fig. 3 and 4, in some embodiments of the invention, the side wall 1 of the evaporator is an arcuate panel; the float 10 is rectangular or square.
The selection gate in the above embodiment drives the first baffle 4 and the second baffle 5 which are at a certain angle to rotate simultaneously through the rotation of the rotation shaft 6, and can switch between a state of closing the high liquid taking port 2 and communicating the low liquid taking port 3 with the outside and a state of closing the low liquid taking port 3 and communicating the high liquid taking port 2 with the outside in the rotation process, and the rotation of the rotation shaft 6 is controlled by the gravity difference between the first baffle 4 and the second baffle 5 in the selection gate and whether the floating member 10 in the control assembly applies a force to the first baffle 4.
In some embodiments of the invention, the control of the rotation of the rotating shaft 6 may also be manually operated by means of a lever extending to the outside of the evaporator.
In some embodiments of the present invention, the control of the rotation shaft 6 may also be controlled by a driving component connected to the rotation shaft 6, for example, the driving component may be an asynchronous motor, and the forward and reverse rotation of the asynchronous motor realizes the reciprocating rotation of the rotation shaft 6, so as to further realize the switching of the selection gate between a state of closing the high liquid taking port 2 and the low liquid taking port 3 communicating with the outside and a state of closing the low liquid taking port 3 and the high liquid taking port 2 communicating with the outside, and meanwhile, a liquid level sensor may be disposed in the evaporator and connected with the asynchronous motor in a communication manner, and the liquid level sensor may control the rotation of the asynchronous motor according to the change of the liquid level, so as to control the rotation of the selection gate.
In some embodiments of the present invention, the selection gate may also be a flat plate, and the side wall 1 of the evaporator is provided with a sliding rail set, the flat plate is in sliding fit with the sliding rail set, and the flat plate can be switched between individually closing the high liquid taking port 2 and individually closing the low liquid taking port 3 through sliding on the sliding rail set, and the control of the selection gate can also be manually operated through an operation rod extending to the outside of the evaporator or driven and controlled through a driving component connected with the selection gate.
In some embodiments of the invention, the second form of the opening and closing assembly is as follows: the opening and closing assembly comprises a high liquid taking door for closing the high liquid taking port 2 and a low liquid taking door for closing the low liquid taking port 3.
In some embodiments of the invention, the form of the control assembly that matches the second form of the opening and closing assembly is as follows: a liquid level sensor is arranged in the evaporator; the control assembly comprises a first controller and a second controller which are respectively in communication connection with the liquid level sensor;
the first controller is used for controlling the high liquid taking port door to close or open the high liquid taking port 2;
the second controller is used for controlling the low liquid taking port door to close or open the low liquid taking port 3.
Based on the same thought, the invention also provides an injection reflux system of the evaporator, and the injection reflux system of the evaporator comprises the evaporator.
In some embodiments of the invention, the ejector reflux system of the evaporator comprises an evaporator, a first ejector, an oil separator and a second ejector;
the low liquid taking port 3 is communicated with the low injection pipe 12; the high liquid taking port 2 is communicated with the high injection pipe 11; the other ends of the low injection pipe 12 and the high injection pipe 11 are respectively communicated with the total injection pipe, and the other end of the total injection pipe is communicated with the inlet of the first injector; the outlet of the first ejector is communicated with the inlet of the oil-liquid separator, and the power port of the first ejector is communicated with the high-pressure gaseous or liquid refrigerant output end; the outlet of the separator is communicated with the inlet of the second ejector; the outlet of the second ejector is communicated with the air suction port of the oil tank or the compressor, and the power port of the second ejector is communicated with the high-pressure gaseous or liquid refrigerant output end.
Based on the same thought, the invention also provides an air conditioning unit, which comprises the injection reflux system of the evaporator.
It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (12)
1. An evaporator, characterized in that;
a high liquid taking port (2) and a low liquid taking port (3) are arranged on the side wall (1) of the evaporator;
an opening and closing component for opening and closing the high liquid taking port (2) and the low liquid taking port (3) is arranged in the evaporator;
the evaporator is internally provided with a control component for controlling the opening and closing state of the opening and closing component on the high liquid taking port (2) and the low liquid taking port (3),
the opening and closing assembly comprises a selection gate which is switched between a first state and a second state;
the first state comprises closing the high liquid taking port (2) and opening the low liquid taking port (3);
the second state comprises closing the low liquid taking port (3) and opening the high liquid taking port (2),
the selection door comprises a first baffle (4) and a second baffle (5), wherein the first baffle (4) is used for closing the high liquid taking port (2) and the second baffle (5) is used for closing the low liquid taking port (3) are connected with each other, and the first baffle (4) and the second baffle (5) are connected to the same rotating shaft (6); the rotation shaft (6) can be rotated to switch the selection gate between the first state and the second state,
a first blocking piece (7) matched with the high liquid taking port (2) is arranged on one side of the first baffle (4); one side of the second baffle (5) is provided with a second plugging piece (8) matched with the low liquid taking port (3), and the control assembly comprises a traction piece (9) connected with the side wall (1) of the evaporator above the high liquid taking port (2) and a floating piece (10) connected with the free end of the traction piece (9).
2. An evaporator according to claim 1, characterized in that the low tapping (3) is arranged below the high tapping (2).
3. An evaporator according to claim 2, characterized in that the angle between the first baffle (4) and the second baffle (5) is more than 0 ° and less than 180 °; the rotating shaft (6) is horizontally arranged and is rotationally connected with the side wall (1) of the evaporator between the high liquid taking port (2) and the low liquid taking port (3); the weight of the second baffle (5) is greater than the weight of the first baffle (4).
4. An evaporator according to claim 2, characterized in that the angle between the first baffle (4) and the second baffle (5) is 120 ° -150 °.
5. An evaporator according to claim 2, characterized in that the angle between the first baffle (4) and the second baffle (5) is 135 °.
6. An evaporator according to claim 2, wherein the first baffle (4) and the second baffle (5) are rectangular plates of equal thickness, respectively; the width of the first baffle (4) is equal to the length of the width of the second baffle (5) and is connected with the rotating shaft (6); the length of the first baffle (4) is smaller than the length of the second baffle (5).
7. An evaporator according to claim 2, characterized in that the buoyancy of the liquid is greater than the gravity of the float (10) when the liquid level in the evaporator exceeds the lowest point of the high-access opening (2); when the liquid level in the evaporator is lower than the lowest point of the high liquid taking port (2), the floating piece (10) is connected with the first baffle plate (4) and controls the first baffle plate (4) to close the high liquid taking port (2).
8. An evaporator according to claim 2, characterized in that the opening and closing assembly comprises a high access door for closing the high access (2) and a low access door for closing the low access (3).
9. An evaporator according to claim 8 wherein a liquid level sensor is provided in the evaporator; the control assembly comprises a first controller and a second controller which are respectively in communication connection with the liquid level sensor;
the first controller is used for controlling the high liquid taking port door to close or open the high liquid taking port (2);
the second controller is used for controlling the low liquid taking port door to close or open the low liquid taking port (3).
10. An ejector return system for an evaporator, comprising an evaporator according to any one of claims 1 to 9.
11. The ejector return system of an evaporator of claim 10, wherein the ejector return system of the evaporator comprises an evaporator, a first ejector, an oil separator, and a second ejector;
the low liquid taking port (3) and the low injection pipe (12); the high liquid taking port (2) is communicated with the high injection pipe (11); the other ends of the low injection pipe (12) and the high injection pipe (11) are respectively communicated with a total injection pipe, and the other end of the total injection pipe is communicated with an inlet of the first injector; the outlet of the first ejector is communicated with the inlet of the oil-liquid separator, and the power port of the first ejector is communicated with the high-pressure gaseous or liquid refrigerant output end; the outlet of the separator is communicated with the inlet of the second ejector; the outlet of the second ejector is communicated with the air suction port of the oil tank or the compressor, and the power port of the second ejector is communicated with the high-pressure gaseous or liquid refrigerant output end.
12. An air conditioning unit comprising the ejector return system of the evaporator of claim 10 or 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811297195.5A CN109269157B (en) | 2018-11-01 | 2018-11-01 | Evaporator, ejector reflux system of evaporator and air conditioning unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811297195.5A CN109269157B (en) | 2018-11-01 | 2018-11-01 | Evaporator, ejector reflux system of evaporator and air conditioning unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109269157A CN109269157A (en) | 2019-01-25 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110513918A (en) * | 2019-09-30 | 2019-11-29 | 珠海格力电器股份有限公司 | Injection oil return and liquid taking structure with reliable injection oil return effect and air conditioning system |
| CN111059805B (en) * | 2019-12-11 | 2024-07-26 | 珠海格力电器股份有限公司 | Oil return system, water chilling unit and air conditioner |
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| US6684648B2 (en) * | 2000-07-26 | 2004-02-03 | Fakieh Research & Development Center | Apparatus for the production of freshwater from extremely hot and humid air |
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| US4653286A (en) * | 1985-12-16 | 1987-03-31 | Carrier Corporation | Discharge valve and baffle assembly for a refrigeration system |
| KR870006375A (en) * | 1985-12-16 | 1987-07-11 | 케렌에프. 길멘 | Drain valve and baffle assembly for chiller |
| CN203785337U (en) * | 2014-04-01 | 2014-08-20 | 同方人工环境有限公司 | A flooded evaporator oil return device for sea-going ships |
| CN105466090A (en) * | 2014-09-12 | 2016-04-06 | 丹佛斯（天津）有限公司 | Flash tank and refrigeration system with same |
| CN105641962A (en) * | 2016-03-15 | 2016-06-08 | 山东科灵节能装备股份有限公司 | Falling-film evaporator and organic Rankine cycle power generating system using same |
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