CN211781544U - Outer quick-witted pipeline subassembly of air conditioner and outer machine of air conditioner - Google Patents
Outer quick-witted pipeline subassembly of air conditioner and outer machine of air conditioner Download PDFInfo
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- CN211781544U CN211781544U CN202020114587.XU CN202020114587U CN211781544U CN 211781544 U CN211781544 U CN 211781544U CN 202020114587 U CN202020114587 U CN 202020114587U CN 211781544 U CN211781544 U CN 211781544U
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Abstract
The utility model discloses an outer machine pipeline subassembly of air conditioner and air conditioner, outer machine pipeline subassembly of air conditioner include U type pipe, reposition of redundant personnel tee bend and first drain pipe and second drain pipe, the U type pipe passes through the reposition of redundant personnel tee bend with first drain pipe with second drain pipe intercommunication, the first plane that the direction place was set up of reposition of redundant personnel tee bend with the second plane nonparallel coplane that the direction place was set up of U type pipe. Therefore, the problem that the refrigerant in the first liquid outlet pipe and the refrigerant in the second liquid outlet pipe are not uniformly distributed due to the fact that the layered gas-liquid refrigerant directly flows into the first liquid outlet pipe and the second liquid outlet pipe according to the layered direction distribution after the refrigerant flowing through the U-shaped pipe is layered in gas-liquid mode is solved. The liquid separation of the liquid outlet pipe is uniform in the heating operation, and the heating effect of the air conditioner is improved.
Description
Technical Field
The utility model relates to an air conditioner field, concretely relates to outer quick-witted pipeline subassembly of air conditioner and outer machine of air conditioner.
Background
When a three-way is placed at an angle and is positioned on the same plane with a U-shaped pipe in front of the three-way, when the three-way is in heating operation, a gas-liquid two-phase refrigerant passes through the U-shaped pipe, the gas and the liquid are slightly layered under the combined action of centrifugal force and gravity, the layered refrigerant has the phenomenon of uneven liquid distribution of two paths when passing through the three-way, and one side of the condenser has more vapor and less liquid and is easy to overheat; the little liquid of opposite side vapour is many, and then leads to condenser part U intraductal liquid refrigerant to pile up, can't evaporate completely, and the temperature reduces gradually under loss of pressure's the condition, and the condenser frosts when finally leading to heating operation, and the effect is poor, and the frost is changed under the operating mode that should not change the frost, experiences poor.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model discloses an outer machine pipeline subassembly of air conditioner and outer machine of air conditioner places the angle through setting up a new tee bend for the branch liquid of drain pipe is even under the operation of heating, promotes the air conditioner effect of heating.
According to an aspect of the embodiment of the utility model provides an outer quick-witted pipeline subassembly of air conditioner, including U type pipe, reposition of redundant personnel tee bend and first drain pipe and second drain pipe, the U type pipe passes through the reposition of redundant personnel tee bend with first drain pipe with second drain pipe intercommunication, reposition of redundant personnel tee bend set up the direction place the first plane with the second plane nonparallel coplane that the direction of setting up of U type pipe was located. Therefore, the problem that the refrigerant in the first liquid outlet pipe and the refrigerant in the second liquid outlet pipe are not uniformly distributed due to the fact that the layered gas-liquid refrigerant directly flows into the first liquid outlet pipe and the second liquid outlet pipe according to the layered direction distribution after the refrigerant flowing through the U-shaped pipe is layered in gas-liquid mode is solved. The liquid separation of the liquid outlet pipe is uniform in the heating operation, and the heating effect of the air conditioner is improved.
Preferably, the first plane is perpendicular to the second plane.
Preferably, the minimum angle between the first plane and the second plane is greater than 60 °.
Preferably, the length of the U-shaped pipe is less than 100 mm.
Preferably, the U-shaped pipe comprises an inner section close to the inner side of the bending direction of the U-shaped pipe and an outer section close to the outer side of the bending direction of the U-shaped pipe, the shunt tee comprises a first branch port and a second branch port which are respectively communicated with the first liquid outlet pipe and the second liquid outlet pipe, the inner section of the U-shaped pipe and the outer section of the U-shaped pipe are located on the first plane, and the axis of the first branch port and the axis of the second branch port are located on the second plane.
Preferably, the device further comprises a capillary tube, and the capillary tube is communicated with the flow dividing tee through the U-shaped tube.
According to the utility model discloses another aspect of the embodiment provides an outer machine of air conditioner, including the outer machine pipeline subassembly of aforementioned air conditioner. Liquid separation of the liquid outlet pipe is uniform under heating operation, and the heating effect of the air conditioner is improved.
Preferably, the outdoor unit heat exchanger comprises a plurality of liquid outlet joints, and the first liquid outlet pipe and the second liquid outlet pipe are communicated with the outdoor unit heat exchanger through the liquid outlet joints.
Preferably, the liquid outlet joints are positioned at different heights so as to communicate with the heat exchange tubes in different areas.
Therefore, the matching arrangement angle of the liquid outlet pipe flow dividing tee joint and the three-way front U-shaped pipe is set to be vertical or the deviation angle is not large, so that the refrigerants of all flow paths are uniformly distributed, the heat exchange of the refrigerants is sufficient, and the heating effect can be greatly improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.
FIG. 1 is a front view of a liquid outlet pipe of an external unit of an existing air conditioner;
FIG. 2 is a top view of a liquid outlet pipe of an external unit of an existing air conditioner;
FIG. 3 is a schematic diagram illustrating the distribution of the liquid outlet pipe connecting refrigerant of the prior air conditioner external unit;
fig. 4 is a front view of the connection of the liquid outlet pipe of the pipeline assembly of the air conditioner external unit of the present invention;
fig. 5 is a top view of the liquid outlet pipe connection of the pipeline assembly of the air conditioner external unit of the present invention;
fig. 6 is a schematic diagram illustrating the distribution of the coolant in the liquid outlet pipe of the pipeline assembly of the air conditioner external unit of the present invention;
fig. 7 is an overall assembly schematic diagram of the pipeline assembly of the air conditioner external unit of the present invention;
fig. 8 is the utility model relates to a refrigerant distribution is connected to the drain pipe of the outer quick-witted pipeline subassembly of air conditioner and the outer quick-witted drain pipe of current air conditioner is connected refrigerant distribution effect and is compared the chart.
Description of the reference numerals
100-an external machine heat exchanger, 110-a liquid outlet joint, 200-a pipeline assembly, 210-a U-shaped pipe, 211-an inner section of the U-shaped pipe, 212-an outer section of the U-shaped pipe, 220-a shunt tee, 221-a main end interface, 222-a first branch interface, 223-a second branch interface, 231-a first liquid outlet pipe, 232-a second liquid outlet pipe and 240-a capillary pipe.
Detailed Description
A liquid outlet pipe connecting structure of an air conditioner external unit pipeline assembly is shown in fig. 1, and comprises a U-shaped pipe 210 and a flow-dividing tee 220 communicated with the U-shaped pipe 210. The three-way shunt 220 includes a main port 221 and two port ports, a first port 222 and a second port 223. The first and second drop interfaces 222, 223 are disposed side-by-side in abutting relationship, and the contact surfaces of the first and second drop interfaces 222, 223 are parallel to the axes of the first and second drop interfaces 222, 223, and the axis of the aggregate interface 221 is located on the contact surfaces of the first and second drop interfaces 222, 223. Thus, the aggregate interface 221 is co-located downstream with the first drop interface 222 and the second drop interface 223.
The first and second dispense interfaces 222, 223 are in communication with first and second effluent pipes 231, 232, respectively. The first liquid outlet pipe 231 and the second liquid outlet pipe 232 are communicated with liquid outlet pipes of the outer machine heat exchanger. Therefore, when the air conditioner heats, the refrigerant flows through the flow dividing tee 220 through the U-shaped pipe 210 and is divided and injected into the external machine heat exchanger for heat exchange.
However, in the liquid outlet pipe connection structure of the existing air conditioner external unit pipe assembly, the arrangement direction of the shunt tee 220 is coplanar or parallel to the bending direction of the U-shaped pipe 210. That is, the planes of the axes of the first and second branch ports 222 and 223 are coplanar with or parallel to the plane of the bending direction of the U-shaped pipe 210. When the arrangement is used for heating, when a gas-liquid two-phase refrigerant passes through the U-shaped pipe, the gas and the liquid are slightly layered under the combined action of centrifugal force and gravity, so that the layered refrigerant has the phenomenon of uneven liquid distribution of two paths when passing through the tee joint, and one side of the refrigerant has more vapor and less liquid and is easy to overheat; the little liquid of opposite side vapour is many, and then leads to condenser part U intraductal liquid refrigerant to pile up, can't evaporate completely, and the temperature reduces gradually under loss of pressure's the condition, and the condenser frosts when finally leading to heating operation, and the effect is poor, and the frost is changed under the operating mode that should not change the frost, experiences poor.
Specifically, referring to fig. 3, fig. 3 is a schematic diagram illustrating distribution of the liquid outlet pipe and the refrigerant of the outdoor unit of the air conditioner, and it can be seen from the diagram that when a refrigerant with a certain flow rate and a gas-liquid two-phase coexistent flows through the vertically arranged U-shaped pipe 210, a gas-liquid separation phenomenon occurs under the action of gravity density.
Specifically, when the flow rate of the refrigerant is slow, the centrifugal effect generated when the refrigerant flows through the U-shaped tube 210 is negligible. At this time, because the U-shaped tube 210 is vertically arranged, when a refrigerant with gas-liquid two phases coexisting flows through the vertically arranged U-shaped tube 210, particularly at the bent tube, because the refrigerant flows nearly horizontally at this time, and the turbulence degree of the refrigerant is increased under the intervention of the bent tube, a large amount of gas molecules wrapped in the refrigerant are separated out in a large scale, and under the action of gravity density, a gas part with low density floats up and gathers to occupy an upper layer at the bent tube, namely the U-shaped tube outer section 212, and a liquid part with high density sinks down and is extruded to the U-shaped tube inner section 211 by the gas pressure of the gas part of the U-shaped tube outer section 212. And, on a section of the path flowing through the elbow, the gas-liquid separation state is maintained and continued. Furthermore, the phenomenon that two paths of liquid are uneven when the layered refrigerant passes through the tee joint again can be caused, and one side has more vapor and less liquid and is easy to overheat; the little liquid of opposite side vapour is many, and then leads to condenser part U intraductal liquid refrigerant to pile up, can't evaporate completely, and the temperature reduces gradually under loss of pressure's the condition, and the condenser frosts when finally leading to heating operation, and the effect is poor, and the frost is changed under the operating mode that should not change the frost, experiences poor.
When the flow rate of the refrigerant is high, the centrifugal effect generated when the refrigerant flows through the U-shaped tube 210 is dominant. When a gas-liquid two-phase coexisting refrigerant flows through the vertically arranged U-shaped pipe 210, particularly at the bent pipe, the turbulence degree of the refrigerant is increased under the intervention of the bent pipe, so that a large amount of gas molecules wrapped in the refrigerant are separated out in a large scale, and under the action of centrifugal force and gravity density, a liquid part with high density floats upwards to gather to occupy an upper layer at the bent pipe, namely the U-shaped pipe outer section 212, and a gas part with low density is extruded to the U-shaped pipe inner section 211 by the liquid part at the U-shaped pipe outer section 212. And, on a section of the path flowing through the elbow, the gas-liquid separation state is maintained and continued. Furthermore, the phenomenon that two paths of liquid are uneven when the layered refrigerant passes through the tee joint can also be caused, and one side has more vapor and less liquid and is easy to overheat; the steam of opposite side is few liquid many, and then leads to the interior liquid refrigerant of condenser part U type pipe 210 to pile up, can't evaporate completely, and the temperature reduces gradually under loss of pressure's the condition, and the condenser frosts when finally leading to heating operation, and the effect is poor, and the frost is dissolved under the operating mode that should not melt the frost, experiences poor.
The utility model provides an outer quick-witted pipeline subassembly of air conditioner sets up the direction through changing reposition of redundant personnel tee bend 220, sets up the perpendicular and perpendicular setting of the direction place plane of buckling of U type pipe 210 in the axis place plane of first reposition of redundant personnel tee bend 222 and second reposition of redundant personnel interface 223 promptly to improve the gas-liquid separation's that the refrigerant produced behind U type pipe 210 problem of flowing through.
Specifically, as shown in fig. 4 and 5, the device includes a U-shaped tube 210 and a three-way shunt 220 communicating with the U-shaped tube 210. The three-way shunt 220 includes a main port 221 and two port ports, a first port 222 and a second port 223. The first and second drop interfaces 222, 223 are disposed side-by-side in abutting relationship, and the contact surfaces of the first and second drop interfaces 222, 223 are parallel to the axes of the first and second drop interfaces 222, 223, and the axis of the aggregate interface 221 is located on the contact surfaces of the first and second drop interfaces 222, 223. Thus, the aggregate interface 221 is co-located downstream with the first drop interface 222 and the second drop interface 223.
The first and second dispense interfaces 222, 223 are in communication with first and second effluent pipes 231, 232, respectively. The first liquid outlet pipe 231 and the second liquid outlet pipe 232 are communicated with liquid outlet pipes of the outer machine heat exchanger. Therefore, when the air conditioner heats, the refrigerant flows through the flow dividing tee 220 through the U-shaped pipe 210 and is divided and injected into the external machine heat exchanger for heat exchange.
The plane of the axes of the first branch joint 222 and the second branch joint 223 of the flow-dividing tee 220 is perpendicular to the plane of the bending direction of the U-shaped pipe 210.
In the arrangement, when a refrigerant with gas phase and liquid phase passes through the U-shaped pipe 210 during heating operation, the gas phase and the liquid phase are slightly layered under the combined action of centrifugal force and gravity. However, when the layered refrigerant passes through the tee joint again, since the planes of the axes of the first branch port 222 and the second branch port 223 of the flow dividing tee joint 220 are perpendicular to the plane of the bending direction of the U-shaped pipe 210, the separated gas-liquid refrigerant cannot smoothly pass through the flow dividing tee joint 220, but is blocked when the refrigerant flows across the junction of the first branch port 222 and the second branch port 223, so that the adjacent upstream area is prevented from forming a back vortex, the vortex sucks the separated gas-liquid refrigerant, so that the gas-liquid refrigerant is re-mixed, therefore, no matter the air is in the upper part and the liquid is in the lower part or the air is in the upper part and the lower part, the layered refrigerant flows through the flow dividing tee joint 220 which is vertically arranged with the U-shaped pipe 210, the stratified gas-liquid two-phase refrigerant is re-mixed and flows out of the first and second branch ports 222 and 223 to the external unit heat exchanger, as shown in fig. 6. Therefore, the mixed refrigerant is uniform in gas and liquid, and the original first branch port 222 and second branch port 223 which are smoothly communicated with the inner layer and the outer layer of the U-shaped pipe 210 are eliminated, so that even though the inner layer and the outer layer still exist, the layered gas-liquid refrigerant can be equally divided in the first branch port 222 and the second branch port 223 at the same time, but the non-concentrated first branch port 222 is low in gas and liquid and the non-concentrated second branch port 223 is high in gas and liquid, or the first branch port 222 is high in gas and liquid and the second branch port 223 is high in gas and liquid, so that the phenomenon that two paths of liquid are uneven when the layered refrigerant passes through a tee joint is avoided, one side is high in gas and liquid, and the refrigerant is easy to overheat; the little liquid of opposite side vapour is many, and then leads to the interior liquid refrigerant of condenser part U type pipe 210 to pile up, can't evaporate completely, and the temperature reduces gradually under loss of pressure's the condition, and the condenser frosts when finally leading to heating operation, and the effect is poor, and the frost is melted under the operating mode that should not melt the frost, experiences poor problem.
In some embodiments, considering the limited space for other pipes of the external machine, the length a of the U-shaped pipe 210 should be less than 100mm, and the long length results in that other pipes are not easy to arrange.
In some embodiments, it is allowed to set the angle of the maximum deviation of the angle between the plane where the axes of the first branch joint 222 and the second branch joint 223 of the three-way branching joint 220 are perpendicular to the plane where the bending direction of the U-shaped pipe 210 is located, to be 30 ° to meet the assembly requirements under some special installation conditions.
Fig. 7 is a schematic diagram illustrating the overall assembly of the pipe assembly of the outdoor unit of the air conditioner, as shown in the figure, one end of the U-shaped pipe 210 is connected to the capillary 240, and the other end is connected to the main port interface 221 of the shunt tee 220 perpendicular to the U-shaped pipe. The other end of the flow-dividing tee 220 is respectively provided with a first branch port 222 and a second branch port 223 which are arranged side by side, and the first branch port 222 and the second branch port 223 are respectively connected with a first liquid outlet pipe 231 and a second liquid outlet pipe 232. The first liquid outlet pipe 231 and the second liquid outlet pipe 232 are respectively connected to different liquid outlet joints 110 of the outer unit heat exchanger 100, so that, when the air conditioner heats, the refrigerant flows through the U-shaped pipe 210, flows through the shunt tee 220, is shunted, and is injected into different heat exchange pipes of the outer unit heat exchanger 100 for heat exchange. The shunting tee joint 220 is perpendicular to the U-shaped pipe 210, the refrigerant distribution is uniform, the working efficiency of each heat exchange pipe is consistent, and the conditions of accumulated liquid defrosting and the like are avoided.
According to the utility model discloses another aspect of the embodiment provides an outer machine of air conditioner, including the outer machine pipeline subassembly of aforementioned air conditioner. Liquid separation of the liquid outlet pipe is uniform under heating operation, and the heating effect of the air conditioner is improved. The outdoor unit heat exchanger 100 comprises a plurality of liquid outlet connectors 110, and the first liquid outlet pipe 231 and the second liquid outlet pipe 232 are communicated with the outdoor unit heat exchanger 100 through the liquid outlet connectors 110. The liquid outlet joint 110 is positioned at different heights to communicate with the heat exchange pipes in different areas.
Therefore, the matching arrangement angle of the liquid outlet pipe shunting tee joint 220 and the tee joint front U-shaped pipe 210 is set to be vertical or the deviation angle is not large, so that the refrigerants of all flow paths are uniformly distributed, the heat exchange of the refrigerants is sufficient, and the heating effect can be greatly improved.
The effect of the solution is shown in fig. 8, wherein the temperature of each point of the flow path at the original angle (i.e. the three-way flow divider 220 and the U-shaped tube 210 are arranged in parallel or in the same plane) and the changed angle (i.e. the three-way flow divider 220 and the U-shaped tube 210 are arranged in the vertical direction) is compared by arranging a thermal point couple, the left → right (overcooled outlet → cold inlet) in the following table is the flow direction of the refrigerant in the condenser during heating operation, and the data in the table is the temperature value of each point; in a flow path with reasonable design, the difference of cold inlet temperatures of all paths (namely the refrigerant outlet temperature of a condenser under heating operation) should not exceed 3 ℃, and under the working condition of rated heating, the temperature of each point of the flow path should not be lower than 0 ℃ (the freezing point of water), otherwise, the frost is easy to form.
It can be seen that the upper two paths are seriously overheated before the change, the cold inlet temperature (5.64 ℃/5.51 ℃) is close to the ambient temperature (the test working condition is 7 ℃), the refrigerant is too little, and a small amount of refrigerant is quickly evaporated and overheated in the pipeline; and the next two paths of the refrigerant are too much accumulated, so that the refrigerant cannot exchange heat fully, frost is formed, a large amount of refrigerant cannot be evaporated, and the heating capacity cannot be fully exerted. The temperature difference between the upper and the lower paths is more than 6 ℃, and the temperature of the lower path is lower than-1 ℃, so that frosting is generated, and the heating performance is seriously influenced.
The temperature of each flow path is uniform after being changed, the condition of uneven distribution of the refrigerant does not occur, the temperature points of all points of the flow path are not lower than 0 ℃, frost is not formed after long-time operation, the temperature points are uniform, and the capacity is greatly improved.
Claims (9)
1. An air conditioner outdoor unit pipeline assembly comprises a U-shaped pipe (210), a flow dividing tee joint (220), a first liquid outlet pipe (231) and a second liquid outlet pipe (232), wherein the U-shaped pipe (210) is communicated with the first liquid outlet pipe (231) and the second liquid outlet pipe (232) through the flow dividing tee joint (220),
and a first plane in which the arrangement direction of the flow dividing tee joint (220) is located is not parallel to and coplanar with a second plane in which the arrangement direction of the U-shaped pipe (210) is located.
2. The outdoor unit duct assembly of claim 1, wherein said first plane is perpendicular to said second plane.
3. The outdoor unit duct assembly of claim 1, wherein the minimum angle between the first plane and the second plane is greater than 60 °.
4. The outdoor unit duct assembly of claim 1, wherein the U-shaped pipe (210) has a length of less than 100 mm.
5. The outdoor unit pipe assembly of an air conditioner according to any one of claims 1 to 4, wherein the U-shaped pipe (210) comprises an inner U-shaped pipe section (211) close to the inner side of the bending direction of the U-shaped pipe (210) and an outer U-shaped pipe section (212) close to the outer side of the bending direction of the U-shaped pipe (210), the flow dividing tee (220) comprises a first branch port (222) and a second branch port (223) which are respectively communicated with the first liquid outlet pipe (231) and the second liquid outlet pipe (232), the inner U-shaped pipe section (211) and the outer U-shaped pipe section (212) are located on the first plane, and the axis of the first branch port (222) and the axis of the second branch port (223) are located on the second plane.
6. The outdoor unit duct assembly of claim 1, further comprising a capillary tube (240), wherein the capillary tube (240) communicates with the branch tee (220) through the U-shaped tube (210).
7. An outdoor unit for an air conditioner, comprising the pipe assembly of any one of claims 1 to 6.
8. The outdoor unit of claim 7, further comprising an outdoor unit heat exchanger (100), wherein the outdoor unit heat exchanger (100) comprises a plurality of liquid outlet connectors (110), and the first liquid outlet pipe (231) and the second liquid outlet pipe (232) are communicated with the outdoor unit heat exchanger (100) through the liquid outlet connectors (110).
9. The outdoor unit of claim 8, wherein the liquid outlet joints (110) are located at different heights to communicate heat exchange pipes of different areas.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020114587.XU CN211781544U (en) | 2020-01-17 | 2020-01-17 | Outer quick-witted pipeline subassembly of air conditioner and outer machine of air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020114587.XU CN211781544U (en) | 2020-01-17 | 2020-01-17 | Outer quick-witted pipeline subassembly of air conditioner and outer machine of air conditioner |
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| CN211781544U true CN211781544U (en) | 2020-10-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023040275A1 (en) * | 2021-09-19 | 2023-03-23 | 青岛海尔空调器有限总公司 | Liquid separator, heat exchanger, refrigeration cycle system, and air conditioner |
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2020
- 2020-01-17 CN CN202020114587.XU patent/CN211781544U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023040275A1 (en) * | 2021-09-19 | 2023-03-23 | 青岛海尔空调器有限总公司 | Liquid separator, heat exchanger, refrigeration cycle system, and air conditioner |
| WO2023040351A1 (en) * | 2021-09-19 | 2023-03-23 | 青岛海尔空调器有限总公司 | Liquid separator, heat exchanger, refrigeration cycle system, air conditioner |
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