CN219141123U - Bypass flow-regulating heat-collecting plate - Google Patents
Bypass flow-regulating heat-collecting plate Download PDFInfo
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- CN219141123U CN219141123U CN202320177840.XU CN202320177840U CN219141123U CN 219141123 U CN219141123 U CN 219141123U CN 202320177840 U CN202320177840 U CN 202320177840U CN 219141123 U CN219141123 U CN 219141123U
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Abstract
The utility model discloses a bypass flow-regulating heat-collecting plate, wherein an evaporation area and a flow-regulating bypass are arranged in a heat-collecting plate body, the upper part of the evaporation area is communicated with a working medium supply port, the lower part of the evaporation area is communicated with a flow-regulating bypass inlet, after the flow-regulating bypass is led out from the lower part of the evaporation area, a pipeline extends upwards to be arranged at one side of the evaporation area, the flow-regulating bypass is used for increasing the on-way resistance in the falling and diffusion of the working medium, counteracting the falling due to gravity inertia, and prolonging the residence time of the working medium in an evaporation block to ensure the full evaporation of the liquid working medium, and meanwhile, the whole pressure of a plate surface is balanced to ensure that gaseous working medium can be sucked out from the upper part of the evaporation block sufficiently, thereby providing a guarantee for the promotion of the thermal efficiency of a system; the flow regulating bypass is a single flow passage led out from the lower part of the evaporation area, no bifurcation exists, reasonable reflux and oil return are achieved by applying the siphon principle, and the stability and the safety of the system are ensured.
Description
Technical Field
The utility model belongs to a new energy technology, relates to a natural energy heat utilization device, and particularly relates to a bypass flow regulating heat collecting plate.
Background
The heat collecting plate is a core component for absorbing heat of a solar heteromeric system, oil flow channels are fully distributed in the heat collecting plate, phase change heat absorption is generated when working medium flows through the flow channels, heat energy in air is absorbed, the purpose of cold-heat exchange is achieved, the distribution mode of the internal flow channels determines the operation trend of the working medium flow and the coordination relation between tributaries and main flows in each stage, and the operation logic not only affects the efficiency, but also determines the reliability and the service life of the system.
According to research, the heat collecting plate with the flow channels uniformly arranged on the plate surface has the following problems in the operation process because working media flow through the plate surface of the heat collecting plate through the same path:
(1) The working medium flow channels are uniformly distributed on the whole plate surface, and liquid working medium flows through the evaporation area rapidly due to insufficient heat absorption and phase change in the flow channels due to gravity factors, so that the heat absorption efficiency of the heat collecting plate is low; the liquid working medium and the gaseous working medium which can absorb heat with high efficiency flow through the same path, so that the panel pressure is unbalanced, the operation is unstable, and the system thermal efficiency is low.
(2) Gaseous working medium, gas-liquid mixed working medium and liquid working medium flow through the same route and pass through the heat-collecting plate face, and face global pressure is unbalanced, relies on compressor suction alone can not guarantee that lubrication fluid in the runner can return to the compressor smoothly, and occasionally appears the compressor and lacks oily trouble, and the stability of heat utilization system, security are not high.
Disclosure of Invention
Aiming at the defects existing in the prior art, the utility model aims to provide a bypass flow regulating heat collecting plate, which improves the running stability and safety of a system.
The utility model is realized by the following technical scheme:
a bypass flow-regulating heat-collecting plate comprises a heat-collecting plate body, wherein a working medium flow channel arranged in the heat-collecting plate body comprises an evaporation area and a flow-regulating bypass, and one side of the heat-collecting plate body is respectively provided with a working medium supply port and a working medium return port which are communicated with the working medium flow channel;
the evaporation area adopts the network structure runner, evaporation area upper portion and working medium supply mouth intercommunication, evaporation area lower part and accent flow bypass entry intercommunication, transfer the flow bypass and draw forth the back from evaporation area lower part, the pipeline upwards extends and sets up in evaporation area one side, transfer the flow bypass upwards to extend the height and be no more than evaporation area height, transfer flow bypass export and working medium return mouth intercommunication.
Further, the flow regulating bypass comprises an inverted U-shaped flow regulating elbow arranged on one side of the evaporation area and drainage pipelines connected to two ends of the inverted U-shaped flow regulating elbow and distributed transversely, wherein one drainage pipeline is communicated with the lower part of the evaporation area, and the other drainage pipeline is communicated with a working medium return port.
Further, the height of the inverted U-shaped flow regulating bend is greater than 1/2 of the height of the evaporation zone and does not exceed the height of the evaporation zone.
Further, the evaporator comprises a plurality of parallel flow regulating bypasses which are arranged side by side, and each flow regulating bypass is communicated with the lower part of the evaporation area and the working medium return port after being connected end to end.
Further, the flow regulating bypass comprises a first flow regulating bypass arranged above and a second flow regulating bypass arranged below the first flow regulating bypass in parallel with the first flow regulating bypass, wherein the first flow regulating bypass has a first flow regulating bend height which is larger than 1/2 of the height of the evaporation zone and is not more than the height of the evaporation zone, and the second flow regulating bypass has a second flow regulating bend which is larger than the first flow regulating bend height and is not more than the height of the evaporation zone.
Further, the evaporation zone comprises a plurality of evaporation blocks which are distributed along the heat collecting plate body at intervals up and down, each evaporation block is correspondingly provided with a flow regulating bypass, and the flow regulating bypass outlet of the upper evaporation block is communicated with the upper part of the adjacent lower evaporation block; the height of the flow regulating bypass flow regulating bend corresponding to each evaporation block is greater than 1/2 of the height of the evaporation block and does not exceed the height of the evaporation block.
Further, the quantity of the flow regulating bypasses which are correspondingly arranged on the evaporation blocks close to the working medium return port is larger than that of the flow regulating bypasses which are correspondingly arranged on the evaporation blocks close to the working medium supply port.
Further, a gaseous working medium outlet is arranged at the upper part of each evaporation zone or each evaporation zone, and the gaseous working medium outlet is communicated with a working medium return port through a gaseous return pipeline; the working medium supply port and the working medium return port are both positioned at the bottom of the heat-collecting plate body, and the working medium supply port is communicated with the evaporation area liquid inlet area positioned at the upper part of the evaporation area or each evaporation area through a pipeline.
Further, when the heat-collecting plate body is a vertical plate, namely, the transverse length is smaller than the longitudinal length, the evaporation area is divided into a plurality of evaporation areas, and the working medium flow passage of the evaporation area is a honeycomb hexagonal unit.
Further, when the heat collecting plate body is a transverse plate, namely the transverse length is larger than the longitudinal length, the working medium flow passage of the evaporation area is a block-shaped partition block.
The utility model has the following beneficial effects:
the working medium flow channel arranged in the heat collecting plate body comprises an evaporation area and a flow regulating bypass, the evaporation area adopts a net-shaped structure flow channel, the evaporation area is mainly distributed with balanced flow, working medium enters the evaporation area from the upper part of the plate surface, liquid working medium rapidly sinks due to the action of gravity, but the liquid working medium cannot be evaporated sufficiently due to too fast sinking, the lower part of the evaporation area is communicated with an inlet of the flow regulating bypass, the flow regulating bypass is upwards extended from the lower part of the evaporation area and is arranged on one side of the evaporation area, the on-way resistance in the falling and diffusion of the working medium is increased through the flow regulating bypass, the residence time of the working medium in the evaporation area is prolonged, the falling due to gravity inertia is counteracted, and the residence time of the working medium in the evaporation area is prolonged to ensure the sufficient evaporation of the liquid working medium. Meanwhile, the whole pressure of the plate surface is balanced, so that gaseous materials can be fully sucked out of the upper part of the evaporation block, and a guarantee is provided for improving the thermal efficiency of the system.
The flow regulating bypass is a single flow passage led out from the lower part of the evaporation area, no bifurcation is caused, the pressure difference is formed between the inlet and the outlet of the flow regulating bypass, a siphoning phenomenon is generated, the high-position inlet pressure is larger than the low-position outlet pressure, and even when the system stops working, liquid working medium and lubricating oil can continue to flow along the pipeline direction and smoothly flow downwards to return to the host, so that the stability and the safety of the system are ensured.
According to the height layering and grading of the heat collecting plate surface, a plurality of stages of evaporation blocks can be arranged, and a sufficient number of flow regulating bypasses are correspondingly arranged on the evaporation blocks close to the working medium return port, so that the working medium is guaranteed to be fully evaporated, and the heat efficiency is improved.
When the plate surface is a transverse plate, the crisscrossed dividing blocks are adopted to realize effective flow spreading, flow dividing and flow blocking, the plate surface is evaporated uniformly, the evaporation path is smooth, and the evaporation efficiency is high; when the plate surface is a vertical plate, the honeycomb-shaped evaporation paths are uniformly distributed and spread quickly, the pressure is balanced, and meanwhile, the multistage evaporation blocks with flow regulating bypasses are arranged for complete evaporation, so that the energy efficiency is high.
The whole heat collecting plate is arranged in an upper inlet, upper outlet and lower return way, an evaporation area or an evaporation area liquid inlet area is arranged at the upper part of each evaporation area of the evaporation area, free downward diffusion of working media is guaranteed by utilizing gravity, a gaseous working medium outlet is arranged at the upper part of the tail end of the evaporation area, the floating gaseous working media are quickly guided to a working medium return port to be discharged, a diffusion pipeline with enough area is provided for liquid working media, and evaporation efficiency is improved.
Drawings
FIG. 1 is a schematic view of a heat collecting plate according to an embodiment;
FIG. 2 is a schematic diagram of the structure of an embodiment dimer heat plate;
in the figure: 1-a working medium supply port; 2-evaporation block liquid inlet area; 3-a gaseous working medium outlet; 4-an evaporation zone; 5-gaseous reflux pipeline and 6-flow regulating bend; 7-a flow regulating bypass; 8-a first flow regulating bend; 9-a first flow regulation bypass; 10-a second flow regulating bend; 11-a second flow regulation bypass; 12-working medium return port.
Detailed Description
The utility model will now be described in further detail with reference to specific examples, which are intended to illustrate, but not to limit, the utility model.
As shown in fig. 1, the heat collecting plate body of this embodiment is a transverse plate structure with a transverse length greater than a longitudinal length, a working medium flow channel arranged in the heat collecting plate body comprises an evaporation zone 4 and a flow regulating bypass, and one side of the heat collecting plate body is respectively provided with a working medium supply port 1 and a working medium return port 12 which are communicated with the working medium flow channel; the net-shaped structure flow passage of the evaporation area 4 is a block-shaped partition block. The upper portion of the evaporation zone 4 is communicated with the working medium supply port 1, the lower portion of the evaporation zone 4 is communicated with a flow regulating bypass inlet, after the flow regulating bypass is led out from the lower portion of the evaporation zone 4, a pipeline extends upwards to be arranged on one side of the evaporation zone 4, the flow regulating bypass comprises an inverted U-shaped flow regulating bend arranged on one side of the evaporation zone 4 vertically and drainage pipelines which are connected with two ends of the inverted U-shaped flow regulating bend and are transversely distributed, one drainage pipeline is communicated with the lower portion of the evaporation zone 4, and the other drainage pipeline is communicated with the working medium return port 12. The height of the inverted U-shaped flow regulating bend is greater than 1/2 of the height of the evaporation zone 4 and does not exceed the height of the evaporation zone 4.
The embodiment comprises a plurality of parallel flow regulating bypasses which are arranged side by side, and each flow regulating bypass is communicated with the lower part of the evaporation zone 4 and the working medium return port 12 after being connected end to end. A first flow regulating bypass 9 positioned above and a second flow regulating bypass 11 positioned below the first flow regulating bypass 9 in parallel with the first flow regulating bypass 9, wherein the first flow regulating bend 8 of the first flow regulating bypass 9 is higher than 1/2 of the height of the evaporation zone 4 and is not higher than the height of the evaporation zone 4, and the second flow regulating bend 10 of the second flow regulating bypass 11 is higher than the first flow regulating bend 8 and is not higher than the height of the evaporation zone 4.
A gaseous working medium outlet 3 is arranged at the upper part of the evaporation zone 4, and the gaseous working medium outlet 3 is communicated with a working medium return port 12 through a gaseous return pipeline 5; the upper part of the evaporation area 4 is provided with an evaporation block liquid inlet area 2, a working medium supply port 1 and a working medium return port 12 are positioned on the same side of the heat collecting plate, and the working medium supply port 1 is communicated with the evaporation block liquid inlet area 2 through a pipeline.
The evaporation zone 4 in this embodiment is provided with a first evaporation block, in which case the first evaporation is the last evaporation. The liquid working medium enters the plate surface from the working medium supply port 1 through the liquid inlet area 2 of the first-stage (last-stage) evaporation block, and the plate surface is transversely provided with a net-shaped structure flow channel which is a block-shaped partition block, so that the on-way resistance in the falling and diffusion of the working medium is increased, the downward flow speed of the working medium is slowed down, and the flow uniformity is ensured; the evaporated working medium is changed into a gas state, the gas state working medium is discharged from a gas state working medium outlet 3 at the upper end of the tail part of an evaporation zone 4, the lower end of the tail part is connected with a first flow regulating bypass and a second flow regulating bypass, the liquid state working medium passes through a first flow regulating bend, the height of the liquid state working medium is larger than 1/2 of the height of an evaporation block and smaller than the height of the evaporation block, the liquid state working medium enters a second flow regulating bend after transverse turning back, the height of the liquid state working medium is larger than 1/2 of the height of the evaporation block and smaller than the height of the evaporation block, the liquid state working medium is communicated with a gas state return pipeline 5 to enter a converging evaporation zone after transverse turning back, and working medium and lubricating oil return to the compressor from a working medium return port 12.
As shown in fig. 2, the heat collecting plate body of this embodiment has a riser structure with a transverse length smaller than a longitudinal length, the evaporation area 4 is divided into a plurality of evaporation blocks, and the working medium flow passage of the evaporation area 4 is a honeycomb hexagonal unit; the evaporation zone 4 comprises two evaporation blocks which are vertically and alternately distributed along the heat-collecting plate body, the upper evaporation block is correspondingly provided with a flow regulating bypass 7, and the height of a flow regulating bend 6 of the flow regulating bypass 7 is greater than 1/2 of the height of the evaporation block and does not exceed the height of the evaporation block; the outlet of the flow regulating bypass 7 of the upper evaporation block is communicated with the upper part of the lower evaporation block.
The lower evaporation block is provided with a first flow regulating bypass 9 and a second flow regulating bypass 11 which is parallel to the first flow regulating bypass 9 and is positioned below the first flow regulating bypass 9, the first flow regulating bend 8 of the first flow regulating bypass 9 is higher than 1/2 of the height of the evaporation zone 4 and is not higher than the height of the evaporation zone 4, and the second flow regulating bend 10 of the second flow regulating bypass 11 is higher than the first flow regulating bend 8 and is not higher than the height of the evaporation zone 4.
The upper parts of the upper evaporation block and the lower evaporation block are respectively provided with a gaseous working medium outlet 3 and an evaporation block liquid inlet area 2, and the gaseous working medium outlet 3 is communicated with a working medium return port 12 through a gaseous return pipeline 5; the working medium supply port 1 and the working medium return port 12 are both positioned at the bottom of the heat-collecting plate body, the working medium supply port 1 is communicated with the upper evaporation block liquid inlet area 2 through a pipeline, and the outlet of the upper evaporation block flow regulating bypass 7 is communicated with the lower evaporation block liquid inlet area 2.
In this embodiment, two stages of evaporation blocks, i.e., one stage evaporation and the final stage evaporation, are provided. The liquid working medium enters the first-stage evaporation block, namely the upper evaporation zone from the working medium supply port 1 through the evaporation block liquid inlet zone 2, the plate surface flow channels are distributed in a honeycomb shape, the plate surface flow is balanced, and meanwhile, the pressure is balanced; the flow channel at the bottom of the first-stage evaporation block is transversely intercepted, a flow regulating bypass is arranged at the lower end of the tail part, the height of a flow regulating bend is far greater than 1/2 of the height of the evaporation block and smaller than the height of the evaporation block, the working medium is prevented from being evaporated incompletely due to too fast gravity flow velocity, the evaporated working medium becomes gaseous, and the working medium is discharged from a gaseous working medium outlet at the upper end of the tail part of the evaporation area; the flow regulating bypass is transversely folded back, the flow regulating bypass is communicated with a final-stage evaporation block, namely a lower evaporation region, through an evaporation block liquid inlet region, after the evaporation of the final-stage evaporation block, a working medium is discharged from a gaseous working medium outlet, non-evaporated working medium is discharged through a first flow regulating bypass and a second flow regulating bypass, the first flow regulating bent height is greater than 1/2 of the height of the evaporation block, the second flow regulating bent height is greater than 1/2 of the height of the evaporation block and less than the height of the evaporation block, the working medium is communicated with a gaseous return pipeline 5 to enter a converging evaporation region after being transversely folded back, and working medium and lubricating oil are returned to the compressor from a working medium return port 12.
Claims (10)
1. The utility model provides a bypass flow regulating heat collecting plate which characterized in that: the solar heat collecting plate comprises a heat collecting plate body, wherein a working medium flow channel arranged in the heat collecting plate body comprises an evaporation zone (4) and a flow regulating bypass (7), and one side of the heat collecting plate body is respectively provided with a working medium supply port (1) and a working medium return port (12) which are communicated with the working medium flow channel;
the evaporation zone (4) adopts the network structure runner, evaporation zone (4) upper portion and working medium supply mouth (1) intercommunication, evaporation zone (4) lower part and flow regulation bypass (7) entry intercommunication, flow regulation bypass (7) are drawn forth from evaporation zone (4) lower part back, and the pipeline upwards extends to set up in evaporation zone (4) one side, and flow regulation bypass (7) upwards extends highly and is not more than evaporation zone (4) height, and flow regulation bypass (7) export and working medium return mouth (12) intercommunication.
2. The bypass, flow regulating, and heat collecting plate of claim 1, wherein: the flow regulating bypass (7) comprises an inverted U-shaped flow regulating elbow (6) vertically arranged on one side of the evaporation area (4) and drainage pipelines connected with two ends of the inverted U-shaped flow regulating elbow (6) and transversely distributed, wherein one drainage pipeline is communicated with the lower part of the evaporation area (4), and the other drainage pipeline is communicated with the working medium return port (12).
3. The bypass, flow regulating and heat collecting plate of claim 2, wherein: the height of the inverted U-shaped flow regulating bend (6) is greater than 1/2 of the height of the evaporation area (4) and does not exceed the height of the evaporation area (4).
4. A bypass, flow regulating, heat accumulating plate as recited in claim 3, wherein: the evaporator comprises a plurality of parallel flow regulating bypasses which are arranged side by side, and each flow regulating bypass is communicated with the lower part of an evaporation zone (4) and a working medium return port (12) after being connected end to end.
5. The bypass, flow regulating and heat accumulating plate of claim 4, wherein: the flow regulating bypass comprises a first flow regulating bypass (9) positioned above and a second flow regulating bypass (11) parallel to the first flow regulating bypass (9) and positioned below the first flow regulating bypass, wherein the first flow regulating bend (8) of the first flow regulating bypass (9) is higher than 1/2 of the height of the evaporation zone (4) and does not exceed the height of the evaporation zone (4), and the second flow regulating bend (10) of the second flow regulating bypass (11) is higher than the first flow regulating bend (8) and does not exceed the height of the evaporation zone (4).
6. Bypass flow regulating heat collecting plate according to any of claims 2-5, wherein: the evaporation area (4) comprises a plurality of evaporation blocks which are distributed along the heat collecting plate body at intervals up and down, each evaporation block is respectively and correspondingly provided with a flow regulating bypass (7), and the outlet of the flow regulating bypass (7) of the upper evaporation block is communicated with the upper part of the adjacent lower evaporation block; the height of the flow regulating bend (6) of the flow regulating bypass (7) corresponding to each evaporation block is greater than 1/2 of the height of the evaporation block and does not exceed the height of the evaporation block.
7. The bypass, flow regulating and heat collecting plate of claim 6, wherein: the number of the flow regulating bypasses (7) which are correspondingly arranged near the evaporation blocks of the working medium return port (12) is larger than that of the flow regulating bypasses (7) which are correspondingly arranged near the evaporation blocks of the working medium supply port (1).
8. The bypass, flow regulating and heat collecting plate of claim 7, wherein: the upper part of the evaporation area (4) or each evaporation block of the evaporation area (4) is provided with a gaseous working medium outlet (3), and the gaseous working medium outlet (3) is communicated with a working medium return port (12) through a gaseous return pipeline (5); the working medium supply port (1) and the working medium return port (12) are both positioned at the bottom of the heat-collecting plate body, and the working medium supply port (1) is communicated with the evaporation area (4) or the evaporation area liquid inlet area (2) positioned at the upper part of each evaporation area through a pipeline.
9. The bypass, flow regulating and heat collecting plate of claim 8, wherein: when the heat collecting plate body is a vertical plate, namely the transverse length is smaller than the longitudinal length, the evaporation area (4) is divided into a plurality of evaporation areas, and the working medium flow passage of the evaporation area (4) is a honeycomb hexagonal unit.
10. The bypass, flow regulating and heat collecting plate of claim 8, wherein: when the heat collecting plate body is a transverse plate, namely the transverse length is larger than the longitudinal length, the working medium flow passage of the evaporation area (4) is a block-shaped partition block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320177840.XU CN219141123U (en) | 2023-01-15 | 2023-01-15 | Bypass flow-regulating heat-collecting plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320177840.XU CN219141123U (en) | 2023-01-15 | 2023-01-15 | Bypass flow-regulating heat-collecting plate |
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| Publication Number | Publication Date |
|---|---|
| CN219141123U true CN219141123U (en) | 2023-06-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320177840.XU Active CN219141123U (en) | 2023-01-15 | 2023-01-15 | Bypass flow-regulating heat-collecting plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219141123U (en) |
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2023
- 2023-01-15 CN CN202320177840.XU patent/CN219141123U/en active Active
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