CN212300020U - Falling film type heat exchanger and air conditioner - Google Patents
Falling film type heat exchanger and air conditioner Download PDFInfo
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- CN212300020U CN212300020U CN202022105010.5U CN202022105010U CN212300020U CN 212300020 U CN212300020 U CN 212300020U CN 202022105010 U CN202022105010 U CN 202022105010U CN 212300020 U CN212300020 U CN 212300020U
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- 239000011552 falling film Substances 0.000 title claims abstract description 51
- 239000003507 refrigerant Substances 0.000 claims abstract description 63
- 239000007788 liquid Substances 0.000 claims abstract description 57
- 239000010408 film Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 9
- 238000001704 evaporation Methods 0.000 description 8
- 230000008020 evaporation Effects 0.000 description 8
- 230000005494 condensation Effects 0.000 description 7
- 238000009833 condensation Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011044 inertial separation Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
The utility model relates to a falling liquid film heat exchanger and air conditioner, falling liquid film heat exchanger includes: a housing; a liquid refrigerant inlet; a gaseous refrigerant port; a liquid refrigerant outlet; the liquid distributor is arranged in the shell and positioned below the gaseous refrigerant port, and the liquid distributor is communicated with the liquid refrigerant inlet; the heat exchanging part is arranged in the shell and is positioned below the liquid distributor; the flow guide component comprises a shell, and an air inlet part and an air outlet part which are arranged on the shell and are arranged along the circumferential direction of an inner cavity of the shell, the flow guide component is rotatably arranged between the heat exchanging part and the inner wall of the shell so as to be switched between a first state and a second state, the flow guide component is in the first state when the falling film type heat exchanger is used as a condenser, the air inlet part faces upwards in the first state, and the air outlet part is positioned on one side, adjacent to the heat exchanging part, of the flow guide component; when the falling film type heat exchanger is used as an evaporator, the diversion part is in a second state, when the falling film type heat exchanger is in the second state, the exhaust part faces upwards, and the air inlet part is positioned on one side, far away from the heat exchange part, of the diversion part.
Description
Technical Field
The utility model relates to an air conditioning equipment field particularly, relates to a falling film heat exchanger and air conditioner.
Background
The falling film evaporator has the advantages of good heat exchange performance, obvious gas-liquid separation effect and the like, and is widely applied to a water chilling unit. The heat pump falling film evaporation condenser is a heat exchanger which can be used for both evaporation and condensation; compared with the conventional evaporator and condenser, the evaporator has the advantages of low cost, small occupied area, more flexible application and the like. However, the existing heat pump falling film evaporator often has the disadvantages of complex working mechanism, unobvious effect of a gas-liquid separator, uneven distribution of gaseous refrigerant in a condensation working condition and the like, and the heat exchange effect is not good enough. The falling film evaporator which can give consideration to both evaporation and condensation functions is a technical bottleneck problem in refrigeration and heating industries.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a can compromise falling liquid film heat exchanger and air conditioner of evaporation, condensation function.
According to an aspect of the embodiments of the present invention, there is provided a falling film heat exchanger, the falling film heat exchanger including:
a housing;
the liquid refrigerant inlet is arranged on the shell;
the gaseous refrigerant port is arranged at the top of the shell;
the liquid refrigerant outlet is arranged at the bottom of the shell;
the liquid distributor is arranged in the shell and positioned below the gaseous refrigerant port, and the liquid distributor is communicated with the liquid refrigerant inlet;
the heat exchanging part is arranged in the shell and is positioned below the liquid distributor;
a flow guide member including a case, and an intake portion and an exhaust portion provided on the case and arranged along a circumferential direction of an inner cavity of the case, the flow guide member being rotatably provided between the heat exchanging portion and an inner wall of the case to be switched between a first state and a second state,
when the falling film heat exchanger is used as a condenser, the flow guide part is in a first state, when the falling film heat exchanger is in the first state, the air inlet part faces upwards, and the air outlet part is positioned on one side, adjacent to the heat exchange part, of the flow guide part; when the falling film type heat exchanger is used as an evaporator, the diversion part is in a second state, when the falling film type heat exchanger is in the second state, the exhaust part faces upwards, and the air inlet part is positioned on one side, far away from the heat exchange part, of the diversion part.
In some embodiments, the flow guide member further includes a flow guide portion located between the air inlet portion and the air outlet portion in a circumferential direction of the inner cavity, and the flow guide portion is configured to guide the refrigerant introduced from the air inlet portion toward the air outlet portion along a curved path.
In some embodiments, a plurality of pointed-angle-shaped protrusions are arranged on the surface of the flow guide part adjacent to the inner cavity side by side.
In some embodiments, the air intake portion, the flow guide portion, and the exhaust portion enclose a triangular inner cavity.
In some embodiments, when the air guide member is in the first state, the air intake portion is inclined downward in a direction away from the heat exchanging portion.
In some embodiments, when the flow guide component is in the first state, the distance between the exhaust part and the heat exchange part gradually increases along the direction from top to bottom.
In some embodiments, when the flow guide member is in the second state, the exhaust portion is inclined downward in a direction away from the heat exchanging portion.
In some embodiments, when the flow guide member is in the second state, the air inlet portion is gradually inclined toward the heat exchange portion in a direction from top to bottom.
In some embodiments, the flow guide member is located at an upper portion of a space between the heat exchanging part and the inner wall of the case.
In some embodiments of the present invention, the,
the total flow area of the vent holes in the intake portion is smaller than the total flow area of the vent holes in the exhaust portion.
According to another aspect of the present invention, there is provided an air conditioner including the above-mentioned falling film heat exchanger.
Use the technical scheme of the utility model, the water conservancy diversion part rotationally sets up between the inner wall of heat transfer portion and shell, and when falling film heat exchanger was used as the condenser, the portion of admitting air up, the exhaust portion was located one side of the neighbouring heat transfer portion of water conservancy diversion part, and when falling film heat exchanger was used as the evaporimeter, the exhaust portion up, the portion of admitting air was located one side of keeping away from the heat transfer portion of water conservancy diversion part, and the performance of heat exchanger when being used as the evaporimeter and being used as the condenser all improves.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention or the related art, the drawings required to be used in the description of the embodiments or the related art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 shows a schematic structural view of a falling film heat exchanger when used as a condenser according to an embodiment of the present invention;
fig. 2 shows a schematic structural view of a falling film heat exchanger when used as an evaporator according to an embodiment of the present invention;
fig. 3 shows a schematic structural diagram of a flow guiding part of a falling film heat exchanger according to an embodiment of the present invention; and
fig. 4 shows a schematic structural diagram of a flow guiding portion of a flow guiding component of a falling film heat exchanger according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1 to 4, the falling film heat exchanger of the present embodiment includes a shell 1, a liquid refrigerant inlet 2, a gaseous refrigerant outlet 3, a liquid refrigerant outlet 7, a liquid distributor 4, a heat exchanging portion 6, and a flow guiding member 5.
The liquid refrigerant inlet 2 is arranged on the shell 1; the gaseous refrigerant port 3 is arranged at the top of the shell 1; the liquid refrigerant outlet 7 is arranged at the bottom of the shell 1; the liquid distributor 4 is arranged in the shell 1 and is positioned below the gaseous refrigerant port 3, and the liquid distributor 4 is communicated with the liquid refrigerant inlet 2.
The heat exchanging part 6 is arranged in the shell 1 and is positioned below the liquid distributor 4. The flow guide part 5 comprises a shell and an air inlet part 51, a flow guide part 52 and an air outlet part 53 which are arranged along the circumferential direction of the inner cavity of the shell, the flow guide part 5 is rotatably arranged between the heat exchange part 6 and the inner wall of the shell 1, when the falling film heat exchanger 1 is used as a condenser, the air inlet part 51 faces upwards, the air outlet part 53 is positioned on one side, close to the heat exchange part 6, of the flow guide part 5, when the falling film heat exchanger is used as an evaporator, the air outlet part 53 faces upwards, and the air inlet part 51 is positioned on one side, far away from the heat exchange part 6, of the.
The deflector member 5 is rotatably disposed within the housing 1 to switch between a first state and a second state. When the falling film heat exchanger is used as a condenser, the flow guide part 5 is in the first state, and when the flow guide part 5 is in the first state, the air inlet part 51 faces upwards, and the air outlet part 53 is positioned on one side of the flow guide part 5 adjacent to the heat exchanging part 6. When the falling film heat exchanger is used as an evaporator, the diversion part 5 is in the second state, and when the diversion part 5 is in the second state, the exhaust part 53 faces upwards, and the air inlet part 51 is positioned on one side of the diversion part 5 far away from the heat exchanging part 6.
In the present embodiment, the air intake part 51 or the air exhaust part 53 faces upward, and the direction of the air intake part 51 or the air exhaust part 53 is not limited to a strict vertical direction, and an angle between a plane in which the air intake part 51 or the air exhaust part 53 is located and a horizontal plane is in a range of 0 to 20 degrees should be regarded as facing upward.
The heat exchanging portion 6 includes a plurality of layers of heat exchanging pipes arranged side by side in a vertical direction, and each layer of heat exchanging pipe includes a plurality of heat exchanging pipes arranged side by side in a horizontal direction.
As shown in fig. 1, when the falling film heat exchanger is used as a condenser, the gaseous refrigerant to be condensed is introduced into the gaseous refrigerant inlet 3, flows to the heat exchanging portion 6 through the air inlet portion 51 and the air outlet portion 53 of the guide member 5, and is condensed by the heat exchanging portion 6 and then discharged through the liquid refrigerant outlet 7.
As shown in fig. 2, when the falling film heat exchanger is used as an evaporator, the liquid refrigerant introduced from the liquid refrigerant inlet 2 is sprayed onto the heat exchanging portion 6 through the liquid distributor, the liquid refrigerant exchanges heat with the heat exchanging portion 6 and evaporates, and then flows to the upper portion of the housing 1 through the flow guide part 5, and then the gaseous refrigerant flows out through the gaseous refrigerant outlet 3.
In this embodiment, when the falling film heat exchanger is used as an evaporator, the gaseous refrigerant flows upwards through the flow guide part 5, so that the flow distance of the gaseous refrigerant is prolonged, a liquid blocking effect is achieved, and the effect of the gas-liquid separator is improved by utilizing the inertia turbulent impact effect. When the falling film heat exchanger is used as a condenser, the gaseous refrigerant bypasses the liquid distributor 4 and enters the flow guide part 5, the flow guide part 5 plays a role of guiding the gaseous refrigerant, and the gaseous refrigerant is effectively guided to be in contact with the heat exchange part 6 by changing the flowing direction of the gaseous refrigerant.
In the present embodiment, the air inlet portion 51, the flow guide portion 52, and the air outlet portion 53 enclose a triangular inner cavity. The guide member 5 is positioned at an upper portion of a space between the heat exchanging part 6 and the inner wall of the case 1.
The upper end of the flow guide part 5 is slightly higher than the upper end of the heat exchanging part 6. The cross section of the flow guide part 5 is triangular, the vertex angle of the triangle is downward, and the bottom edge of the triangle is upward. The air intake part 51, the air discharge part 53 and the guide part 52 form one side of a triangle, respectively.
As shown in fig. 1, when the diversion component 5 is in the first state, that is, when the falling film heat exchanger 1 is used as a condenser, the air inlet 51 is gradually lowered in a direction away from the heat exchanging portion 6, which is beneficial for smooth entry of the gaseous refrigerant into the inner cavity of the diversion component 5.
When the falling film heat exchanger 1 is used as a condenser, the distance between the exhaust part 53 and the heat exchange part 6 is gradually increased along the direction from top to bottom, which is beneficial to uniformly conveying the refrigerant to the heat exchange part 6. The guide portion 52 is gradually inclined toward the exhaust portion 53 along a direction from top to bottom to guide the refrigerant introduced from the inlet portion 51 toward the exhaust portion 53.
As shown in fig. 1 and 4, a plurality of pointed protrusions 54 are arranged side by side on the surface of the flow guide portion 52 adjacent to the inner cavity.
The inner surface of the flow guide part 52 is provided with a sharp-angled protrusion 54 to form a multi-bending structure, a stepped structure or a V-shaped feature, which can not only enhance the turbulence effect and the gas guiding effect of the airflow flow, but also increase the rigidity of the structure.
When the flow guiding elements are in the first state, i.e. the falling film heat exchanger is used as a condenser, the height of the protrusions 54 increases in the direction from bottom to top.
When the falling film heat exchanger is used as a condenser, the flow guide part 5 can prevent the airflow from flowing to a non-heat exchange area in a large area, high-temperature and high-pressure gaseous refrigerant is effectively guided to the surface of the heat exchange part 6, the gaseous refrigerant enters the shell 1 from the gaseous refrigerant port 3 and enters the flow guide parts 5 at two sides by bypassing the liquid distributor 4 in the middle of the shell 1, the gaseous refrigerant is firstly distributed and guided through the air inlet part 51, then the airflow impacts on the stepped flow guide part 53 to change the flowing direction of the gaseous refrigerant, and then the gaseous refrigerant flows out from the air exhaust part 52 to be uniformly guided to the surface of the heat exchange part 5, so that the airflow is prevented from rushing to the non-heat exchange area (namely, the non-pipe distribution area) due to the inertia effect, and.
As shown in fig. 2, when the diversion component 5 is in the second state, that is, when the falling film heat exchanger 1 is used as an evaporator, the air inlet portion 51 is gradually inclined toward the heat exchange portion 6 along the direction from top to bottom, so that the gaseous refrigerant after exchanging heat with the heat exchange portion 6 can enter the inner cavity of the diversion component 5 from the air inlet portion 51.
The guide member 5 is positioned at an upper portion of a space between the heat exchanging part 6 and the inner wall of the case 1.
The air guide element 5 in the second position is rotated by 80 ° to 100 °, preferably 90 °, relative to the air guide element 5 in the first position. Liquid refrigerant enters into the inside of shell 1 from the liquid refrigerant import 2 of the upper end of shell 1, forms even, stable liquid film cover on the surface of heat transfer portion 6 through liquid distributor 4, carries out the heat transfer evaporation, and the gaseous refrigerant after the evaporation flows upwards afterwards, and the tube bank side of heat transfer portion 6 forms and keeps off the liquid structure, constitutes U type gas flow channel design, prolongs the gaseous refrigerant stroke, utilizes inertial separation to go out the liquid drop that splashes in the air flue turns to the department simultaneously. Meanwhile, the air passage structure is in an inclined form, so that the phenomenon of air suction and liquid carrying is avoided.
Treat the technical problem who solves to heat pump falling liquid film evaporator, the utility model provides a compromise evaporation, a novel rotation type water conservancy diversion part of condensation operating mode, operation and structure are simpler.
When the operating condition is heated, novel guide component 5 is converted into the structural condition that is fit for the condensation operating mode, high-temperature and high-pressure gaseous refrigerant gets into shell 1, the air current leads heat exchange portion 6 surface through guide component 5, gaseous refrigerant evenly contacts heat exchange portion 6, the heat transfer area of gaseous refrigerant and heat exchange tube has been increased, the problem that gaseous refrigerant and heat exchange tube can not contact the heat transfer completely is avoided, and can guarantee that airflow channel is smooth and even, the heat transfer performance of condensation operating mode has been strengthened.
When the refrigeration operating mode, novel guide part 5 is rotatory to the condition that is fit for the evaporation condition, low temperature low pressure liquid refrigerant gets into in the shell 1 from the inlet, evenly drip through liquid distributor 4 and drench on heat transfer portion 6, the gaseous state refrigerant that produces can the upflow through novel guide part 6, when evaporimeter refrigerant liquid level was too high, violent boiling, refrigerant steam can carry the liquid drop, the air guide device can play the effect that keeps off the liquid, the formation of extension refrigerant, when getting into the air guide device simultaneously, utilize inertial separation to play the liquid drop that splashes, thereby the risk of compressor suction band liquid has been reduced.
In some embodiments, the vent holes of the inlet portion 51 are smaller than the vent holes of the outlet portion 53, and the total flow area of the vent holes of the inlet portion 51 should be smaller than the total flow area of the vent holes of the outlet portion 53, which facilitates smooth and uniform gas passage while separating gas and liquid droplets by inertia.
According to another aspect of the present invention, there is provided an air conditioner, which includes the above-mentioned falling film heat exchanger.
The above description is only exemplary embodiments of the present invention, and should not be construed as limiting the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (11)
1. A falling film heat exchanger, comprising:
a housing (1);
the liquid refrigerant inlet (2) is arranged on the shell (1);
the gaseous refrigerant port (3) is arranged at the top of the shell (1);
the liquid refrigerant outlet (7) is arranged at the bottom of the shell (1);
the liquid distributor (4) is arranged in the shell (1) and is positioned below the gaseous refrigerant port (3), and the liquid distributor (4) is communicated with the liquid refrigerant inlet (2);
the heat exchanging part (6) is arranged in the shell (1) and is positioned below the liquid distributor (4);
a guide member (5) including a case and an intake portion (51) and an exhaust portion (53) provided on the case and arranged along a circumferential direction of an inner cavity of the case, the guide member (5) being rotatably provided between a heat exchanging portion (6) and an inner wall of the case (1) to be switched between a first state and a second state,
when the falling film type heat exchanger is used as a condenser, the flow guide part (5) is in a first state, the air inlet part (51) faces upwards in the first state, and the air outlet part (53) is positioned on one side of the flow guide part (5) adjacent to the heat exchanging part (6); when the falling film type heat exchanger is used as an evaporator, the flow guide part (5) is in a second state, in the second state, the exhaust part (53) faces upwards, and the air inlet part (51) is positioned on one side, far away from the heat exchange part (6), of the flow guide part (5).
2. The falling film heat exchanger according to claim 1, wherein the flow guiding member (5) further comprises a flow guiding portion (52) located between the air inlet portion (51) and the air outlet portion (53) in a circumferential direction of the inner cavity, the flow guiding portion (52) being configured to guide the refrigerant introduced by the air inlet portion (51) toward the air outlet portion (53) along a curved path.
3. The falling film heat exchanger according to claim 2, characterized in that the flow guiding portion (52) is provided with a plurality of cusp-shaped protrusions (54) side by side on the surface adjacent to the inner cavity.
4. The falling film heat exchanger according to claim 2, wherein the inlet portion (51), the flow guiding portion (52) and the outlet portion (53) enclose a triangular inner cavity.
5. The falling film heat exchanger according to claim 1, wherein the inlet portion (51) is inclined downwards in a direction away from the heat exchanging portion (6) when the flow guiding element (5) is in the first state.
6. The falling film heat exchanger according to claim 1, wherein the distance between the exhaust part (53) and the heat exchanging part (6) is gradually increased in a direction from top to bottom when the flow guiding part (5) is in the first state.
7. The falling film heat exchanger according to claim 1, wherein the exhaust portion (53) is inclined downward in a direction away from the heat exchanging portion (6) when the flow guiding part (5) is in the second state.
8. The falling film heat exchanger according to claim 1, wherein the air inlet portion (51) is gradually inclined toward the heat exchanging portion (6) in a direction from top to bottom when the flow guiding part is in the second state.
9. The falling film heat exchanger according to claim 1, characterized in that the flow guiding part (5) is located in the upper part of the space between the heat exchanging part (6) and the inner wall of the outer shell (1).
10. The falling film heat exchanger according to claim 1,
the total flow area of the vent holes in the intake section (51) is smaller than the total flow area of the vent holes in the exhaust section (53).
11. An air conditioner characterized by comprising the falling film heat exchanger of any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022105010.5U CN212300020U (en) | 2020-09-23 | 2020-09-23 | Falling film type heat exchanger and air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022105010.5U CN212300020U (en) | 2020-09-23 | 2020-09-23 | Falling film type heat exchanger and air conditioner |
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| Publication Number | Publication Date |
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| CN212300020U true CN212300020U (en) | 2021-01-05 |
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| CN202022105010.5U Active CN212300020U (en) | 2020-09-23 | 2020-09-23 | Falling film type heat exchanger and air conditioner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111981871A (en) * | 2020-09-23 | 2020-11-24 | 珠海格力电器股份有限公司 | Falling film type heat exchanger and air conditioner |
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2020
- 2020-09-23 CN CN202022105010.5U patent/CN212300020U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111981871A (en) * | 2020-09-23 | 2020-11-24 | 珠海格力电器股份有限公司 | Falling film type heat exchanger and air conditioner |
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