CN210569375U - Heat exchanger system and water chilling unit - Google Patents
Heat exchanger system and water chilling unit Download PDFInfo
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- CN210569375U CN210569375U CN201920605792.3U CN201920605792U CN210569375U CN 210569375 U CN210569375 U CN 210569375U CN 201920605792 U CN201920605792 U CN 201920605792U CN 210569375 U CN210569375 U CN 210569375U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract description 8
- 239000003507 refrigerant Substances 0.000 claims abstract description 92
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- 238000005057 refrigeration Methods 0.000 claims abstract description 11
- 238000005086 pumping Methods 0.000 claims abstract description 5
- 238000009413 insulation Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 29
- 230000009286 beneficial effect Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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Abstract
The application relates to the technical field of heat exchange, and discloses a heat exchanger system and a water chilling unit. The heat exchanger system is used in a refrigeration loop or a heating loop and comprises a compressor and an evaporator; the evaporator comprises an auxiliary heat exchange tube arranged inside the evaporator, the inlet of the auxiliary heat exchange tube is communicated with the exhaust pipeline of the compressor through a first bypass pipeline, the outlet of the auxiliary heat exchange tube is communicated with the exhaust pipeline of the compressor through a second bypass pipeline, and a pumping device is arranged on the second bypass pipeline. When the first refrigerant in the evaporator is about to flow out of the evaporator, heat exchange is carried out between the first refrigerant and the auxiliary heat exchange tube, so that the residual liquid first refrigerant is vaporized, the dryness of the first refrigerant output from the first outlet is improved, and the phenomenon of liquid entrainment during air suction of the compressor is improved.
Description
Technical Field
The application relates to the technical field of heat exchange, for example to a heat exchanger system and a water chilling unit.
Background
In an air conditioning apparatus, a compressor generally forms a refrigeration circuit or a heating circuit together with an evaporator and a condenser. The compressor sucks the gaseous refrigerant transmitted by the evaporator through the air suction port, outputs the gaseous refrigerant to the condenser to release heat and liquefy, and then enters the evaporator again to form a cycle.
In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:
the phenomenon of air suction and liquid carrying of a plurality of compressors is serious, particularly, the problem of air suction and liquid carrying of a magnetic suspension centrifuge is fatal, and the general problem of air suction and liquid carrying can cause wet compression of a press, increase work of the press and further reduce energy efficiency. Severe suction entrainment can also damage the impeller.
SUMMERY OF THE UTILITY MODEL
The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.
The disclosed embodiments provide a heat exchanger system.
In some embodiments, the heat exchanger system is used in a refrigeration circuit or a heating circuit, including a compressor and an evaporator. The evaporator comprises an auxiliary heat exchange tube arranged inside the evaporator, the inlet of the auxiliary heat exchange tube is communicated with the exhaust pipeline of the compressor through a first bypass pipeline, the outlet of the auxiliary heat exchange tube is communicated with the exhaust pipeline of the compressor through a second bypass pipeline, and a pumping device is arranged on the second bypass pipeline.
In some embodiments, the first bypass pipeline is provided with an insulating layer; or the second bypass pipeline is provided with a heat-insulating layer; or the first bypass pipeline and the second bypass pipeline are respectively provided with an insulating layer.
In some embodiments, the auxiliary heat exchange tube includes at least two auxiliary heat exchange branches, and a gap for the first refrigerant to flow to the first outlet is provided between adjacent auxiliary heat exchange branches.
In some embodiments, at least two auxiliary heat exchange branches are arranged side by side.
In some embodiments, at least two auxiliary heat exchange legs are disposed to intersect.
In some embodiments, the auxiliary heat exchange tubes comprise at least a first row of auxiliary heat exchange legs and a second row of auxiliary heat exchange legs; the first row of auxiliary heat exchange branches and the second row of auxiliary heat exchange branches are arranged in a staggered manner
In some embodiments, the inner wall of the auxiliary heat exchange tube is provided with a heat exchange area enlarging structure; or the outer wall of the auxiliary heat exchange tube is provided with a heat exchange area enlarging structure; or, the inner wall and the outer wall of the auxiliary heat exchange tube are respectively provided with a heat exchange area enlarging structure.
The embodiment of the disclosure also provides a water chilling unit.
Optionally, the chiller comprises the aforementioned heat exchanger system.
In some embodiments, the compressor further includes a suction port, and the evaporator further includes a first outlet for outputting a first refrigerant, the first refrigerant being a refrigerant circulating in the refrigeration circuit or the heating circuit; the suction port communicates with the first outlet.
In some embodiments, the chiller further includes a condenser, the condenser including a first input pipeline for inputting the first refrigerant and a first output pipeline for outputting the first refrigerant; the evaporator also comprises a first inlet used for inputting a first refrigerant; the exhaust pipeline is communicated with the first input pipeline, and the first output pipeline is communicated with the first inlet.
The heat exchanger system provided by the embodiment of the disclosure can realize the following technical effects:
the temperature of the first refrigerant discharged by the compressor is higher than that of the first refrigerant at the first outlet and is enough to vaporize the liquid first refrigerant at the first outlet, so that an auxiliary heat exchange tube is arranged in the evaporator, the first refrigerant discharged by the compressor is introduced into the auxiliary heat exchange tube, and when the first refrigerant in the evaporator flows to the first outlet and is about to flow out of the evaporator from the first outlet, the first refrigerant passes through the auxiliary heat exchange tube and exchanges heat with the auxiliary heat exchange tube to vaporize the residual liquid first refrigerant, thereby being beneficial to improving the dryness of the first refrigerant output from the first outlet and further improving the phenomenon of air suction and liquid entrainment of the compressor.
The water chilling unit adopting the heat exchanger system can reduce the work of the compressor and improve the energy efficiency because the phenomenon that the compressor sucks air and carries liquid is improved.
The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:
FIG. 1 is a schematic diagram of a heat exchanger system according to an exemplary embodiment;
FIG. 2 is a top view of the evaporator of FIG. 1, shown in accordance with an exemplary embodiment;
FIG. 3 is a top view of the evaporator of FIG. 1 shown in accordance with an exemplary embodiment;
FIG. 4 is a cross-sectional view of the evaporator of FIG. 1, shown in accordance with an exemplary embodiment;
FIG. 5 is a cross-sectional view of the evaporator of FIG. 1, shown in accordance with an exemplary embodiment;
FIG. 6 is a top view of the evaporator of FIG. 1, shown in accordance with an exemplary embodiment;
fig. 7 is a schematic diagram illustrating a configuration of a chiller according to an exemplary embodiment.
Reference numerals:
1: an evaporator; 11: a first inlet; 12: a first outlet; 13: an auxiliary heat exchange tube; 131: a first bypass line; 132: a second bypass line; 133: an auxiliary heat exchange branch; 1331: a first row of auxiliary heat exchange branches; 1332: a second row of auxiliary heat exchange branches; 134: a gap; 135: a first auxiliary heat exchange branch; 136: a second auxiliary heat exchange branch; 14: a third input line; 15: a third output line; 2: a condenser; 21: a first input line; 22: a first output line; 23: a second input line; 24: a second output line; 3: a second flow regulating valve; 4: a compressor; 41: an air suction port; 42: an exhaust port; 421: an exhaust line.
Detailed Description
The following description and the drawings sufficiently illustrate specific embodiments herein to enable those skilled in the art to practice them. Portions and features of some embodiments may be included in or substituted for those of others. The scope of the embodiments herein includes the full ambit of the claims, as well as all available equivalents of the claims.
As shown in fig. 1, the disclosed embodiment provides a heat exchanger system for use in a refrigeration circuit or a heating circuit, including a compressor 4 and an evaporator 1.
Wherein the evaporator 1 has a first inlet 11 and a first outlet 12; the first inlet 11 is for inputting a first refrigerant into the evaporator 1, and the first outlet 12 is for outputting the first refrigerant flowing through the evaporator 1. The first refrigerant is a refrigerant circulating in the refrigeration circuit or the heating circuit.
In some embodiments, the evaporator 1 further comprises a third input line 14 and a third output line 15. The third input pipeline 14 is used for inputting a third refrigerant into the evaporator 1, and the third refrigerant is used for exchanging heat with the first refrigerant circulating in the evaporator 1, so as to realize the function of the evaporator 1 in a refrigeration circuit or a heating circuit, for example, the first refrigerant absorbs heat and is evaporated into a gaseous state; the third output pipeline 15 is used for outputting the third refrigerant after heat exchange.
In some embodiments, the evaporator 1 further includes an auxiliary heat exchange tube 13 disposed inside the evaporator 1, and configured to exchange heat with the first refrigerant flowing to the first outlet 12, for example, to make the first refrigerant flowing to the first outlet 12 absorb heat and evaporate, so as to vaporize the remaining liquid first refrigerant, which is beneficial to increasing the dryness of the first refrigerant output from the first outlet 12 and improving the phenomenon of liquid entrainment in the suction air of the compressor.
In some embodiments, the inlet of the auxiliary heat exchange tube 13 is communicated with the exhaust pipe 421 of the compressor 4 through the first bypass line 131, the outlet of the auxiliary heat exchange tube 13 is communicated with the exhaust pipe 421 of the compressor 4 through the second bypass line 132, and the second bypass line 132 is provided with a pumping device
In the embodiment of the disclosure, since the temperature of the first refrigerant discharged from the compressor 4 is higher than the temperature of the first refrigerant at the first outlet 12 and is sufficient to vaporize the liquid first refrigerant at the first outlet 12, the evaporator 1 is provided with the auxiliary heat exchange tube 13, the first refrigerant discharged from the compressor 4 is introduced into the auxiliary heat exchange tube 13, when the first refrigerant in the evaporator 1 flows to the first outlet 12, that is, when the first refrigerant flows out of the evaporator 1 from the first outlet 12, the first refrigerant passes through the auxiliary heat exchange tube 13 and exchanges heat with the auxiliary heat exchange tube 13, so as to vaporize the remaining liquid first refrigerant, which is beneficial to improving the dryness of the first refrigerant output from the first outlet 12, thereby improving the phenomenon of air suction and liquid entrainment of the compressor. After the first refrigerant discharged from the compressor exchanges heat with the first refrigerant in the evaporator in the auxiliary heat exchange tube 13, the pressure will be reduced, and the first refrigerant with reduced pressure can be sent back to the exhaust pipe 421 with higher pressure by the pumping device.
In some embodiments, the first bypass pipeline 131 is provided with an insulating layer to prevent heat loss of the first refrigerant during the process of inputting the first refrigerant into the auxiliary heat exchange tubes 13. Optionally, an insulating layer may be disposed on the second bypass line 132 to prevent the first refrigerant from heat loss during flowing back to the exhaust line 421. Optionally, the first bypass pipeline 131 and the second bypass pipeline 132 are both provided with an insulating layer.
In some embodiments, the first bypass line 131 is provided with a first flow rate adjusting valve for adjusting the flow rate of the first refrigerant input into the auxiliary heat exchanging tube 13.
In some embodiments, the auxiliary heat exchange tube 13 is disposed at the first outlet 12, so that the first refrigerant to flow out of the first outlet 12 exchanges heat with the auxiliary heat exchange tube 13, the remaining liquid first refrigerant is vaporized, and the suction liquid entrainment phenomenon of the compressor is improved. Optionally, an auxiliary heat exchange tube 13 is provided at the first outlet 12 through the barrel of the evaporator 1.
In some embodiments, as shown in fig. 3 to 6, the auxiliary heat exchange tube 13 includes at least two auxiliary heat exchange branches 133, a gap 134 is disposed between adjacent auxiliary heat exchange branches 133 for flowing the first refrigerant to the first outlet 12, and the flow direction of the first refrigerant is shown by an arrow in fig. 4 or fig. 5. When the first refrigerant in the gas-liquid mixed state flows through the gap 134, the first refrigerant is simultaneously contacted with the two auxiliary heat exchange branches 133 to exchange heat, so that the heat exchange area can be increased, the heat exchange efficiency is improved, and all the liquid first refrigerants are favorably evaporated into a gas state.
In some embodiments, the auxiliary heat exchanging branches 133 are arranged side by side, as shown in fig. 3, the number of the auxiliary heat exchanging branches 133 can be set to cover a projection of the first outlet 12 to the inside of the evaporator after being arranged side by side, for example, a vertical projection from the first outlet 12 to the inside of the evaporator, which is beneficial to enabling all the first refrigerant flowing to the first outlet 12 to exchange heat with the auxiliary heat exchanging branches 133, and further beneficial to enabling all the remaining liquid first refrigerant to be vaporized. Alternatively, as shown in fig. 4, the auxiliary heat exchange branches 133 are arranged in parallel; as shown in fig. 5, the auxiliary heat exchange branches 133 are arranged in parallel in multiple rows, and when the first refrigerant in a gas-liquid mixed state flows through the auxiliary heat exchange branches arranged in multiple rows, the first refrigerant simultaneously contacts with two or more auxiliary heat exchange tubes 13 to exchange heat, so that the heat exchange area can be increased, the heat exchange efficiency can be improved, and all the liquid first refrigerants can be evaporated into a gaseous state.
In some embodiments, as shown in fig. 5, auxiliary heat exchange branches 133 comprise at least a first row of auxiliary heat exchange branches 1331 and a second row of auxiliary heat exchange branches 1332; first row of auxiliary heat exchange branches 1331 are staggered with second row of auxiliary heat exchange branches 1332. In the embodiment of the present disclosure, a curved first refrigerant flow path may be formed between the first row of auxiliary heat exchange branches 1331 and the second row of auxiliary heat exchange branches 1332 which are staggered, as shown by arrows in fig. 5, on one hand, the flow rate of the first refrigerant may be reduced, so that the first refrigerant performs sufficient heat exchange with the first row of auxiliary heat exchange branches 1331 and the second row of auxiliary heat exchange branches 1332, and on the other hand, the first refrigerant may contact with more auxiliary heat exchange branches, so that the contact area is increased, the heat exchange efficiency is improved, and it is beneficial to evaporating all the liquid first refrigerants into a gaseous state.
In some embodiments, as shown in fig. 6, the auxiliary heat exchange tubes 13 comprise at least a first auxiliary heat exchange branch 135 disposed along the first direction and at least a second auxiliary heat exchange branch 136 disposed along the second direction, the first auxiliary heat exchange branch and the second auxiliary heat exchange branch intersecting. This disclosed embodiment can form different polygonal structure's clearance 134 through setting up crossing supplementary heat transfer branch road, when the first refrigerant of gas-liquid mixture state flows through this polygonal structure's clearance 134, will contact with a plurality of supplementary heat transfer branch roads simultaneously, carries out the heat exchange, can increase heat transfer area, improves heat exchange efficiency, is favorable to making all liquid first refrigerants all evaporated into gaseous state. Optionally, as shown in fig. 6, a gap 134 of a quadrilateral structure may be formed after the two first auxiliary heat exchange branches 135 and the two second auxiliary heat exchange branches 136 intersect, and when the first refrigerant in a gas-liquid mixed state flows through the gap 134 of the quadrilateral structure, the first refrigerant will contact the two first auxiliary heat exchange branches 135 and the two second auxiliary heat exchange branches 136 at the same time to perform heat exchange, so that the heat exchange area may be increased, the heat exchange efficiency is improved, and it is beneficial to evaporate all the liquid first refrigerants into a gaseous state.
In some embodiments, the inner wall of the auxiliary heat exchange tube 13 is provided with a heat exchange area enlarging structure, or the outer wall of the auxiliary heat exchange tube 13 is provided with a heat exchange area enlarging structure, or both the inner wall and the outer wall of the auxiliary heat exchange tube 13 are provided with heat exchange area enlarging structures, wherein the heat exchange area enlarging structure is configured to enlarge the heat exchange area of the auxiliary heat exchange tube 13.
By adopting the above embodiment, when the inner wall of the auxiliary heat exchange tube 13 is provided with the heat exchange area enlarging structure, the heat exchange area between the first refrigerant circulating inside the auxiliary heat exchange tube 13 and the auxiliary heat exchange tube 13 can be enlarged, so that the heat transferred to the outer wall of the auxiliary heat exchange tube 13 is increased, and then the first refrigerant flowing to the first outlet 12 is absorbed, thereby improving the heat exchange efficiency, and facilitating all the liquid first refrigerants to be evaporated into a gas state; when the outer wall of the auxiliary heat exchange tube 13 is provided with the heat exchange area enlarging structure, the heat exchange area between the first refrigerant flowing to the first outlet 12 and the outer wall of the auxiliary heat exchange tube 13 can be enlarged, so that the heat exchange efficiency is improved, and the evaporation of all the liquid first refrigerants into a gaseous state is facilitated.
In some embodiments, the heat exchange area enlarging structure is a thread structure.
The embodiment of the present disclosure further provides a water chilling unit, as shown in fig. 7, including the heat exchanger system.
In some embodiments, the compressor 4 is provided with a suction port 41, and the first outlet 12 communicates with the suction port 41.
In some embodiments, the compressor 4 is further provided with a gas outlet 42, and a gas outlet line 421 is provided on the gas outlet 42.
In some embodiments, the chiller further comprises a condenser 2.
In some embodiments, the condenser 2 includes a first input line 21 for inputting a first refrigerant to the condenser 2; the condenser further comprises a first output pipeline 22 for outputting the first refrigerant circulating in the condenser 2. The exhaust line 421 communicates with the first input line 21, and the first output line 22 communicates with the first inlet 11, thereby constituting a refrigeration circuit or a heating circuit.
In some embodiments, the condenser 2 further includes a second input pipeline 23 and a second output pipeline 24, the second input pipeline 23 is used for inputting a second refrigerant to the condenser 2, and the second output pipeline 24 is used for outputting the second refrigerant; the second refrigerant exchanges heat with the first refrigerant flowing through the condenser 2 to perform a function of the condenser 2 in a refrigeration circuit or a heating circuit, for example, to liquefy the first refrigerant by heat release.
In some embodiments, as shown in fig. 7, the chiller further includes a second flow regulating valve 3 configured to regulate the flow of the refrigerant between the condenser 2 and the evaporator 1.
In some embodiments, the chiller further includes a drying filter disposed between the condenser and the evaporator, and configured to dry an output refrigerant of the condenser and flow into the evaporator, so as to prevent the compressor from sucking air and carrying liquid to some extent.
The embodiment of the disclosure also provides an air conditioner which comprises the water chilling unit.
The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The scope of the disclosed embodiments includes the full ambit of the claims, as well as all available equivalents of the claims.
The words used in this application are words of description only and not of limitation of the claims. As used in the description of the embodiments and the claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
Herein, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a structure, apparatus, or device that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such structure, apparatus, or device. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a structure, device or apparatus that comprises the element. The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The disclosed embodiments are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the embodiments of the present disclosure is limited only by the appended claims.
Claims (10)
1. A heat exchanger system for use in a refrigeration or heating circuit, the heat exchanger system comprising a compressor and an evaporator;
the evaporator comprises an auxiliary heat exchange tube arranged inside the evaporator, the inlet of the auxiliary heat exchange tube is communicated with the exhaust pipeline of the compressor through a first bypass pipeline, the outlet of the auxiliary heat exchange tube is communicated with the exhaust pipeline of the compressor through a second bypass pipeline, and a pumping device is arranged on the second bypass pipeline.
2. The heat exchanger system of claim 1,
an insulating layer is arranged on the first bypass pipeline;
or,
the second bypass pipeline is provided with a heat-insulating layer;
or,
and the first bypass pipeline and the second bypass pipeline are respectively provided with a heat insulation layer.
3. The heat exchanger system according to claim 1 or 2, wherein the auxiliary heat exchange tubes comprise at least two auxiliary heat exchange branches, and a gap is provided between adjacent auxiliary heat exchange branches.
4. The heat exchanger system of claim 3, wherein the at least two auxiliary heat exchange legs are arranged side-by-side.
5. The heat exchanger system of claim 4, wherein the at least two auxiliary heat exchange legs are disposed in an intersecting relationship.
6. The heat exchanger system according to claim 1 or 2, wherein the auxiliary heat exchange tubes comprise at least a first row of auxiliary heat exchange legs and a second row of auxiliary heat exchange legs; the first row of auxiliary heat exchange branches and the second row of auxiliary heat exchange branches are arranged in a staggered mode.
7. The heat exchanger system of claim 1 or 2,
the inner wall of the auxiliary heat exchange tube is provided with a heat exchange area enlarging structure;
or,
the outer wall of the auxiliary heat exchange tube is provided with a heat exchange area enlarging structure;
or,
and the inner wall and the outer wall of the auxiliary heat exchange tube are respectively provided with a heat exchange area enlarging structure.
8. A chiller, comprising a heat exchanger system as claimed in any one of claims 1 to 7.
9. The chiller according to claim 8, wherein the compressor further comprises a suction port, the evaporator further comprises a first outlet for outputting a first refrigerant, the first refrigerant being a refrigerant circulating in the refrigeration circuit or the heating circuit; the suction port communicates with the first outlet.
10. The chiller according to claim 9,
the condenser comprises a first input pipeline for inputting the first refrigerant and a first output pipeline for outputting the first refrigerant;
the evaporator also comprises a first inlet used for inputting the first refrigerant;
the exhaust pipeline is communicated with the first input pipeline, and the first output pipeline is communicated with the first inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920605792.3U CN210569375U (en) | 2019-04-28 | 2019-04-28 | Heat exchanger system and water chilling unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920605792.3U CN210569375U (en) | 2019-04-28 | 2019-04-28 | Heat exchanger system and water chilling unit |
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| Publication Number | Publication Date |
|---|---|
| CN210569375U true CN210569375U (en) | 2020-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920605792.3U Active CN210569375U (en) | 2019-04-28 | 2019-04-28 | Heat exchanger system and water chilling unit |
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|---|---|
| CN (1) | CN210569375U (en) |
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2019
- 2019-04-28 CN CN201920605792.3U patent/CN210569375U/en active Active
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