CN110822548A - Large-temperature-difference counter-flow fan coil - Google Patents
Large-temperature-difference counter-flow fan coil Download PDFInfo
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- CN110822548A CN110822548A CN201911133724.2A CN201911133724A CN110822548A CN 110822548 A CN110822548 A CN 110822548A CN 201911133724 A CN201911133724 A CN 201911133724A CN 110822548 A CN110822548 A CN 110822548A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
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- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention relates to the field of heating ventilation air conditioners, in particular to novel air conditioner terminal system equipment, which comprises a simulated aqueous medium outflow pipe, a medium pipe, a mounting plate, an aqueous medium inflow pipe and an aqueous medium, wherein the medium pipe is provided with a plurality of medium pipes, each medium pipe consists of a plurality of sections of small-knot pipes and is arranged in rows regularly in sequence inside, each medium pipe entering the large-temperature-difference counter-flow type fan coil enters from the mounting plate at one end, bypasses the mounting plate at the other end and then enters, bypasses the mounting plate at the first entering end to complete twice operations, and finally exits from the mounting plate at the other end to form 4 rows of pipes or 6 rows of pipes, so that the uniform distribution of the medium pipes can be realized, and the uniform heat exchange can be ensured.
Description
Technical Field
The invention relates to the field of heating ventilation air conditioners, in particular to novel air conditioner terminal system equipment, and relates to a large-temperature-difference countercurrent fan coil.
Background
The fan-coil unit is composed of coil and fan, it makes the indoor return air directly enter the unit to be cooled, dehumidified or heated, and adopts the mode of in-situ treatment of return air, belonging to the indispensable terminal equipment in air-water system. The heat exchanger in the conventional fan coil generally adopts two or three rows of pipes, the water supply mode mainly adopts cross flow, media enter and exit from the coil underwater, and air and water in the coil exchange heat vertically to form a cross heat exchange mode. In summer, the cross-flow heat exchange ensures that the outlet air temperature of the fan coil is higher than the return water temperature of the chilled water certainly, and the return water supply temperature of the chilled water is set to be 7-12 ℃ in order to meet certain dehumidification capacity and meet the return water supply temperature difference of 5 ℃. In winter, the cross flow heat exchange mode requires that the air outlet temperature of the fan coil is lower than the return water temperature of the medium water, and simultaneously, in order to meet the supply and return water temperature difference of 5 ℃, the supply and return water temperature of the chilled water is set to be 40-45 ℃. And (3) displaying data: in summer, the average temperature of the supply water and the return water of the circulating water is 9.5 ℃, the temperature of the air outlet dry bulb of the fan coil is about 15 ℃, and the difference is about 5 ℃; in winter, the average temperature of the supply water and the return water of the circulating water is 42.5 ℃, the air outlet temperature of the fan coil is 36 ℃, and the difference is about 6 ℃, so that insufficient heat exchange and energy waste are caused.
Therefore, the large-temperature-difference countercurrent fan coil is provided.
Disclosure of Invention
The invention aims to provide a large-temperature-difference countercurrent fan coil which is convenient for maximizing the energy utilization of an air-conditioning water system in a stepped manner, has higher working efficiency of a unit, achieves the same effect, consumes less energy, and has the influence on the flow and the power of a water pump due to the reduction of water quantity, so that the energy consumption is reduced, and the pollution to the environment is reduced.
In order to achieve the purpose, the invention provides the following technical scheme: a large temperature difference counter-flow fan coil comprises a simulated aqueous medium outflow pipe, a medium pipe, a mounting plate, an aqueous medium inflow pipe and an aqueous medium, wherein the number of the medium pipes is multiple, each medium pipe consists of a plurality of sections of small-knot pipes, each medium pipe entering the large-temperature-difference counter-flow type fan coil enters from the mounting plate at one end, bypasses the mounting plate at the other end to enter, bypasses the mounting plate at the first entering end to complete two operations, and finally exits from the mounting plate at the other end, namely 4 rows of tubes are formed, the 4 rows of tubes are arranged in a staggered manner, medium tubes in adjacent rows are not necessarily in the same row position, every two rows are certainly in the same row position, the distances between the adjacent rows are equal, and 4 rows of 6 rows of medium tubes are formed by repeating 6 rows of 4 rows of tubes.
The heat exchanger has the advantages that when the heat exchanger is arranged in a staggered manner, air flows in the bent channels which are alternately contracted and expanded among the tubes, and when the heat exchanger is arranged in a sequential manner, the flow channels are relatively flat, and when the flow speed is higher or the tube spacing is smaller, a detention area is easily formed at the tail part to influence heat exchange; the distances between the rows are the same, which is done to ensure that the medium pipes are evenly distributed and that the heat exchange is evenly performed.
Preferably, each medium pipe is provided with a heat exchange auxiliary sheet.
The advantage is that a more efficient heat exchange can be achieved.
Preferably, the aqueous medium inflow pipe and the aqueous medium outflow pipe are respectively located at two ends of the mounting plate, and all the aqueous medium pipes flow in through one aqueous medium inflow pipe and flow out through the aqueous medium outflow pipe 1.
Preferably, the aqueous medium flows through the aqueous medium inflow pipe, the medium pipe and the aqueous medium outflow pipe in sequence.
Preferably, the direction of flow of the aqueous medium is counter-parallel to the direction of flow of the air.
The advantage lies in can strengthening the heat transfer, let the medium flow direction present reverse parallel with the air current, the low temperature or the high temperature air current and corresponding high temperature or low temperature medium flow of air intake department carry out the heat transfer, the high temperature or the low temperature air current and corresponding low temperature or high temperature medium flow in exit carry out the heat exchange, from air inlet to this in-process of air-out, the air exchanges heat with the even stable of aqueous medium, heat exchange efficiency is higher, thereby overcome the insufficient defect of traditional fan coil heat transfer.
Preferably, the aqueous medium can also be other liquid media, and the air flow can also be other gaseous media; the aqueous medium may also be another liquid medium and the air stream may also be another gaseous medium.
The advantage is that the versatility of the large temperature difference countercurrent fan coil can be realized.
Compared with the prior art, the invention has the beneficial effects that:
the invention improves the working efficiency of the unit: the number of the tube rows is increased, so that the air and the medium can fully exchange heat, the efficiency of the unit is improved, and the COP value is increased. The initial investment is reduced: by adopting a counter-flow mode, the heat exchange efficiency is increased, the same heating and cooling work is completed, and the required heat exchange area is reduced; meanwhile, the temperature difference is increased corresponding to the same refrigerating capacity, the circulating flow is reduced, and the selection specifications of the circulating pump, the distributor and the water supply and return pipe pipeline of the air conditioning system corresponding to the circulating pump, the distributor and the water return pipe pipeline are reduced. The operation cost is reduced: the energy of the water system of the air conditioner is utilized to the maximum in a stepped mode, the working efficiency of the unit is high, the same effect is achieved, the consumed energy is low, meanwhile, the reduction of the water quantity affects the flow and the power of the water pump, the energy consumption is reduced, and the pollution to the environment is reduced. Can be directly supplied; when in late summer early autumn or late winter early spring, not too much cold volume and heat are needed, the unit can be processed without passing through, the bypass pipe is directly led out from the low-level heat source side to supply cold or heat for the terminal fan coil unit, so that the service time of the unit is reduced, and the energy consumption of an energy supply system is reduced. The building space is saved: the fan coil unit with the multiple rows of pipes is adopted, so that the heat exchange is sufficient, the efficiency is high, and the installation number of the fan coils can be reduced.
Drawings
FIG. 1 is a schematic flow diagram of a large temperature differential counterflow fan coil of the present invention;
fig. 2 is a schematic view of the structure of the present invention in the column direction.
In the figure: 1. an aqueous medium outflow pipe; 2. a medium pipe; 3. mounting a plate; 4. the aqueous medium flows into the pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 2, the present invention provides a technical solution: a large temperature difference counter-flow fan coil comprises a simulated aqueous medium outflow pipe 1, a medium pipe 2, a mounting plate 3, an aqueous medium inflow pipe 4 and an aqueous medium, the number of the medium pipes 2 is a plurality, each medium pipe 2 is composed of a plurality of sections of small-node pipes, each medium pipe 2 entering the large-temperature-difference counter-flow type fan coil enters from the mounting plate 3 at one end, bypasses the mounting plate 3 at the other end, enters again, bypasses the mounting plate 3 at the first entering end to complete two operations, and finally exits from the mounting plate 3 at the other end, namely 4 rows of tubes are formed, the 4 rows of tubes are arranged in a staggered manner, medium tubes in adjacent rows are not necessarily in the same row position, every two rows are certainly in the same row position, the distances between the adjacent rows are equal, and 4 rows of 6 rows of medium tubes are formed by repeating 6 rows of 4 rows of tubes. The heat exchanger has the advantages that when the heat exchanger is arranged in a staggered manner, air flows in the bent channels which are alternately contracted and expanded among the tubes, and when the heat exchanger is arranged in a sequential manner, the flow channels are relatively flat, and when the flow speed is higher or the tube spacing is smaller, a detention area is easily formed at the tail part to influence heat exchange; the distances between the rows are the same, which is done to ensure that the medium pipes are evenly distributed and that the heat exchange is evenly performed.
Specifically, each medium pipe 2 is provided with a heat exchange auxiliary sheet. The advantage is that a more efficient heat exchange can be achieved.
Specifically, the aqueous medium inflow pipe 4 and the aqueous medium outflow pipe 1 are respectively located at two ends of the mounting plate 3, and all of the aqueous medium pipes 2 flow in through one aqueous medium inflow pipe 4 and flow out through the aqueous medium outflow pipe 1. The aqueous medium flows through the aqueous medium inflow pipe 4, the medium pipe 2 and the aqueous medium outflow pipe 1 in sequence. The flow direction of the aqueous medium is in counter-parallel to the flow direction of the air. The advantage lies in can strengthening the heat transfer, let the medium flow direction present reverse parallel with the air current, the low temperature or the high temperature air current and corresponding high temperature or low temperature medium flow of air intake department carry out the heat transfer, the high temperature or the low temperature air current and corresponding low temperature or high temperature medium flow in exit carry out the heat exchange, from air inlet to this in-process of air-out, the air exchanges heat with the even stable of aqueous medium, heat exchange efficiency is higher, thereby overcome the insufficient defect of traditional fan coil heat transfer.
The whole fan coil is completely installed in the machine body shell, the air inlet and the air outlet are formed in the machine body shell, in order to achieve countercurrent, the water outlet pipe of the system is located on one side of the air inlet, and the water inlet pipe of the system is located on one side of the air outlet, so that heat exchange is conducted stably and uniformly. Because there is always condensed water on the fan coil, in order to prevent the fan coil from being damaged, a water collecting tray is arranged at the bottom of the machine body shell, and a water outlet is arranged on the water collecting tray. Therefore, the energy of the air-conditioning water system is utilized to the maximum in a stepped mode, the working efficiency of the unit is high, the same effect is achieved, the consumed energy is low, meanwhile, the reduction of the water quantity influences the flow and the power of the water pump, the energy consumption is reduced, and the pollution to the environment is reduced. When in late summer early autumn or late winter early spring, not too much cold volume and heat are needed, the unit can be processed without passing through, the bypass pipe is directly led out from the low-level heat source side to supply cold or heat for the terminal fan coil unit, so that the service time of the unit is reduced, and the energy consumption of an energy supply system is reduced.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a big difference in temperature counterflow fan coil, includes simulation aqueous medium outflow pipe (1), medium pipe (2), mounting panel (3), aqueous medium inflow pipe (4) and aqueous medium, its characterized in that: the medium pipes (2) are arranged in rows orderly, each medium pipe (2) entering the large-temperature-difference counterflow fan coil enters from the mounting plate (3) at one end, bypasses the mounting plate (3) at the other end, enters again, bypasses the mounting plate (3) at the first entering end, completes two operations, and finally exits from the mounting plate (3) at the other end, so that 4 rows of pipes are formed, the rows of the 4 rows of pipes are arranged in a staggered manner, the medium pipes in adjacent rows are not necessarily in the same row, the separated rows are certainly in the same row, the distance between the adjacent rows is equal, and the 4 rows of pipes are repeated to form 6 rows of medium pipes, namely 4 rows of 6 rows of medium pipes.
2. The large temperature difference counterflow fan coil of claim 1, wherein: each medium pipe (2) is provided with a heat exchange auxiliary sheet.
3. The large temperature difference counterflow fan coil of claim 2, wherein: the aqueous medium inflow pipe (4) and the aqueous medium outflow pipe (1) are respectively positioned at two ends of the mounting plate (3), and all the aqueous medium pipes (2) flow in from one aqueous medium inflow pipe (4) and flow out from the aqueous medium outflow pipe (1).
4. The large temperature difference counterflow fan coil of claim 3, wherein: the aqueous medium flows through the aqueous medium inflow pipe (4), the medium pipe (2) and the aqueous medium outflow pipe (1) in sequence.
5. The large temperature difference counterflow fan coil of claim 4, wherein: the flow direction of the aqueous medium is in counter-parallel to the flow direction of the air.
6. The large temperature difference counterflow fan coil of claim 5, wherein: the aqueous medium may also be another liquid medium and the air stream may also be another gaseous medium.
7. The large temperature difference counterflow fan coil of claim 6, wherein: the 4-row 6-column medium pipes can also be 6-row 6-column medium pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911133724.2A CN110822548A (en) | 2019-11-19 | 2019-11-19 | Large-temperature-difference counter-flow fan coil |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911133724.2A CN110822548A (en) | 2019-11-19 | 2019-11-19 | Large-temperature-difference counter-flow fan coil |
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| CN110822548A true CN110822548A (en) | 2020-02-21 |
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| CN201911133724.2A Pending CN110822548A (en) | 2019-11-19 | 2019-11-19 | Large-temperature-difference counter-flow fan coil |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111594929A (en) * | 2020-06-03 | 2020-08-28 | 华清安泰（北京）科技股份有限公司 | Photocatalyst large-temperature-difference fan coil unit |
| CN112934849A (en) * | 2021-02-03 | 2021-06-11 | 陈元友 | Ventilation and dust removal equipment for detecting instrument |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201193850Y (en) * | 2007-12-20 | 2009-02-11 | 庄永卫 | Fan coil pipe special for heat pump |
| CN203177334U (en) * | 2013-03-21 | 2013-09-04 | 德州中傲空调设备有限公司 | Four-row pipe two-waterway dry-type fan-coil unit |
| CN203177338U (en) * | 2013-03-21 | 2013-09-04 | 德州中傲空调设备有限公司 | Three-row pipe three-waterway dry-type fan-coil unit |
| CN203177335U (en) * | 2013-03-21 | 2013-09-04 | 德州中傲空调设备有限公司 | Three-row pipe single-waterway dry-type fan-coil unit |
| US20180372383A1 (en) * | 2017-06-26 | 2018-12-27 | Therma-Stor LLC | Condenser for a Portable Dehumidifier |
-
2019
- 2019-11-19 CN CN201911133724.2A patent/CN110822548A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201193850Y (en) * | 2007-12-20 | 2009-02-11 | 庄永卫 | Fan coil pipe special for heat pump |
| CN203177334U (en) * | 2013-03-21 | 2013-09-04 | 德州中傲空调设备有限公司 | Four-row pipe two-waterway dry-type fan-coil unit |
| CN203177338U (en) * | 2013-03-21 | 2013-09-04 | 德州中傲空调设备有限公司 | Three-row pipe three-waterway dry-type fan-coil unit |
| CN203177335U (en) * | 2013-03-21 | 2013-09-04 | 德州中傲空调设备有限公司 | Three-row pipe single-waterway dry-type fan-coil unit |
| US20180372383A1 (en) * | 2017-06-26 | 2018-12-27 | Therma-Stor LLC | Condenser for a Portable Dehumidifier |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111594929A (en) * | 2020-06-03 | 2020-08-28 | 华清安泰（北京）科技股份有限公司 | Photocatalyst large-temperature-difference fan coil unit |
| CN112934849A (en) * | 2021-02-03 | 2021-06-11 | 陈元友 | Ventilation and dust removal equipment for detecting instrument |
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Application publication date: 20200221 |