CN211345637U - Combined air conditioning unit combining evaporative cooling and mechanical refrigeration - Google Patents
Combined air conditioning unit combining evaporative cooling and mechanical refrigeration Download PDFInfo
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- CN211345637U CN211345637U CN201921699765.3U CN201921699765U CN211345637U CN 211345637 U CN211345637 U CN 211345637U CN 201921699765 U CN201921699765 U CN 201921699765U CN 211345637 U CN211345637 U CN 211345637U
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Abstract
The utility model discloses a combination formula air conditioning unit that evaporative cooling and mechanical refrigeration combine, including the unit casing, be provided with fresh air inlet and supply-air outlet on the corresponding both sides wall of unit casing respectively, the unit casing is inside to have set gradually direct evaporative cooling unit according to the new trend direction of flow, the condenser, air cleaner, indirect evaporative cooling unit, evaporimeter and forced draught blower, the condenser below still is provided with the compressor, condenser and evaporimeter connect gradually and form closed circulation circuit, still be provided with the air intake on the unit casing lateral wall between air cleaner and the condenser. The utility model discloses a combination formula air conditioning unit that evaporative cooling and mechanical refrigeration combine utilizes the effectual reduction of evaporative cooling technique to use traditional mechanical refrigeration's energy consumption, reaches to satisfy indoor travelling comfort requirement with lower energy consumption, and is energy-concerving and environment-protective.
Description
Technical Field
The utility model belongs to the technical field of air conditioning equipment, a combination formula air conditioning unit that evaporative cooling and mechanical refrigeration combine is related to.
Background
Evaporative cooling is a cooling mode for obtaining cold energy by utilizing dry air energy to perform heat-moisture exchange between air and water, and the evaporative cooling technology plays a significant role in various fields in China along with continuous innovation and development of the evaporative cooling technology. However, the evaporative cooling unit is greatly influenced by outdoor meteorological conditions, is more suitable for dry climatic regions such as northwest China and the like, and is more difficult to apply to wet climatic regions such as south China and the like.
The traditional mechanical refrigeration has good stability and cannot be influenced by meteorological conditions, but because the energy consumption is high, the initial investment and the operation cost are high, and the influence of a refrigerant on the environment is large, transformation and upgrading are faced in the times of national energy conservation and emission reduction under heavy tide.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a combination formula air conditioning unit that evaporative cooling and mechanical refrigeration combine utilizes the effectual reduction of evaporative cooling technique to use traditional mechanical refrigeration's energy consumption, reaches to satisfy indoor travelling comfort requirement with lower energy consumption, and is energy-concerving and environment-protective.
The utility model provides a technical scheme who adopts is, a combination formula air conditioning unit that evaporative cooling and mechanical refrigeration combine, including the unit casing, be provided with fresh air inlet and supply-air outlet on the corresponding both sides wall of unit casing respectively, the unit casing is inside to have set gradually direct evaporative cooling unit according to the new trend flow direction, condenser, air cleaner, indirect evaporative cooling unit, evaporimeter and forced draught blower, the condenser below still is provided with the compressor, condenser and evaporimeter connect gradually and form closed circulation circuit, still be provided with the air intake on the unit casing lateral wall between air cleaner and the condenser.
The utility model is also characterized in that,
a throttle valve is connected between the condenser and the evaporator.
The direct evaporative cooling unit comprises a filler, a water distribution device a, a water baffle a, an exhaust fan and an air outlet are sequentially arranged above the filler from bottom to top, a water storage tank a is arranged below the filler, the water distribution device a and the water storage tank a are connected through a water supply pipe a, and a circulating water pump a is further connected to the water supply pipe a.
The water storage tank a is also connected with a water discharge pipe and a water supplementing pipe, and a ball float valve a is further installed at the position where the water supplementing pipe extends into the water storage tank a.
The water supply pipe a is also provided with a valve a.
The filler is arranged obliquely towards the condenser.
The indirect evaporative cooling unit comprises a plate-tube heat exchanger, a water distribution device b, a water baffle b, a secondary exhaust fan and a secondary air outlet are sequentially arranged above the plate-tube heat exchanger from bottom to top, a water storage tank b is arranged below the plate-tube heat exchanger, the water distribution device b is connected with the water storage tank b through a water supply pipe b, a circulating water pump b is further connected onto the water supply pipe b, and a secondary air inlet is further formed in the side wall of the unit shell corresponding to the space between the plate-tube heat exchanger and the water storage tank b.
The water supply pipe b is also provided with a valve b.
The water storage tank b is also connected with a water discharge pipe and a water supplementing pipe, and a ball float valve b is also arranged at the position where the water supplementing pipe extends into the water storage tank b.
The outer side of the plate tube type heat exchanger is attached with a water-absorbing fiber material.
The utility model has the advantages that:
(1) the utility model discloses combine together evaporative cooling and mechanical refrigeration, open different functional sections according to outdoor weather variation, the outdoor natural cold source of make full use of is indoor cooling, and the mechanical refrigeration installed capacity that significantly reduces and boot time, lowering system cost, saving running energy consumption can reach the requirement that satisfies indoor travelling comfort simultaneously.
(2) The utility model discloses indirect evaporative cooling unit uses plate tubular heat exchanger, compares in traditional tubular heat exchanger, more is favorable to adhering to of the outside water film of pipe, and the heat transfer effect is better.
(3) The condenser of the mechanical refrigeration system adopts an evaporative condenser, the inlet of the fresh air inlet is provided with the water-drenching filler, outdoor fresh air is firstly subjected to isenthalpic cooling with the filler layer and then exchanges heat with the condenser, the condensation temperature is reduced, the refrigerating capacity of the compressor is improved, the power consumption is reduced, meanwhile, the filler is obliquely placed, the contact area and the contact time of the treated air and the windward side of the filler are increased, and the heat exchange efficiency is improved.
(4) When mechanical refrigeration needs to be started in hot summer, the direct cooling unit and the indirect evaporative cooling unit pre-cool return air and fresh air firstly, and then are cooled by the evaporator, so that the configuration proportion of the mechanical refrigeration and the refrigeration capacity of the system are effectively reduced.
Drawings
Fig. 1 is a schematic structural diagram of a combined air conditioning unit combining evaporative cooling and mechanical refrigeration according to the present invention;
fig. 2 is a schematic structural diagram of an indirect evaporative cooling unit in a combined air conditioning unit combining evaporative cooling and mechanical refrigeration according to the present invention;
fig. 3 is a schematic view of the air flow direction of the indirect evaporative cooling unit in the combined air conditioning unit combining evaporative cooling and mechanical refrigeration according to the present invention.
In the figure, 1, a compressor, 2, a condenser, 3, a throttle valve, 4, an evaporator, 5, a water storage tank a, 6, a circulating water pump a, 7, a water discharge pipe, 8, a water replenishing pipe, 9, a ball float valve a, 10, a valve a, 11, a water supply pipe a, 12, a fresh air port, 13, a water baffle a, 14, an exhaust fan, 15, an exhaust port, 16, a water distribution device a, 17, a filler, 18, an air inlet, 19, an air filter, 20, a secondary exhaust port, 21, a secondary exhaust fan, 22, a ball float valve b, 23, a water storage tank b, 24, a circulating water pump b, 25, a secondary air inlet, 26, a plate-tube heat exchanger, 27, a water distribution device b, 28, a valve b, 29, a water supply pipe b, 30, a water baffle b, 31, a blower and a blast outlet.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model relates to a combination formula air conditioning unit that evaporative cooling and mechanical refrigeration combine, its structure is as shown in figure 1, including the unit casing, be provided with fresh air inlet 12 and supply-air outlet 32 on the corresponding both sides wall of unit casing respectively, the unit casing is inside to have set gradually direct evaporative cooling unit according to the new trend flow direction, condenser 2, air cleaner 19, indirect evaporative cooling unit, evaporimeter 4 and forced draught blower 31, condenser 2 below still is provided with compressor 1, condenser 2 and evaporimeter 4 connect gradually and form closed circulation circuit, still be provided with air intake 18 on the unit casing lateral wall between air cleaner 19 and the condenser 2.
A throttle valve 3 is connected between the condenser 2 and the evaporator 4, and the compressor 1, the condenser 2, the evaporator 4 and the throttle valve 3 jointly form a mechanical refrigeration unit.
The direct evaporative cooling unit comprises a filler 17, a water distribution device a16, a water baffle a13, an exhaust fan 14 and an exhaust outlet 15 are sequentially arranged above the filler 17 from bottom to top, a water storage tank a5 is arranged below the filler 17, the water distribution device a16 is connected with the water storage tank a5 through a water supply pipe a11, and a circulating water pump a6 is further connected to the water supply pipe a 11.
The water storage tank a5 is also connected with a drain pipe 7 and a water supplementing pipe 8, and a ball float valve a9 is also arranged at the position where the water supplementing pipe 8 extends into the water storage tank a 5.
The water supply pipe a11 is also provided with a valve a 10.
The packing 17 is disposed obliquely toward the condenser 2.
As shown in fig. 2, the indirect evaporative cooling unit includes a plate-and-tube heat exchanger 26, a water distribution device b27, a water baffle b30, a secondary air exhaust fan 21 and a secondary air outlet 20 are sequentially arranged from bottom to top above the plate-and-tube heat exchanger 26, a water storage tank b23 is arranged below the plate-and-tube heat exchanger 26, the water distribution device b27 and the water storage tank b23 are connected through a water supply pipe b29, a circulating water pump b24 is further connected to the water supply pipe b29, and a secondary air inlet 25 is further arranged on a corresponding unit housing side wall between the plate-and-tube heat exchanger 26 and the water storage tank b 23.
The water supply pipe b29 is also provided with a valve b 28.
The water storage tank b23 is also connected with a drain pipe 7 and a water supplementing pipe 8, and a ball float valve b22 is also arranged at the position where the water supplementing pipe 8 extends into the water storage tank b 23.
The outer sides of the plate tubes of the plate-tube heat exchanger 26 are attached with water-absorbing fiber materials, so that the heat exchange area and the heat exchange time are increased, and the evaporative cooling effect is enhanced.
The indirect evaporative cooling unit adopts countercurrent heat exchange, as shown in figure 3, the temperature of the surface water of the upper heat exchange tube bundle is lower than that of the surface of the lower heat exchange tube bundle, outdoor air circulates from bottom to top, the temperature of the lower air is higher than that of the upper air, a larger temperature difference is always kept when the air exchanges heat with the water, the indirect evaporative cooling unit is more beneficial to heat exchange, and the air flows from bottom to top, so that the falling speed of water drops can be effectively reduced, the retention time of a liquid film on the surface of the tube heat exchange tube bundle is prolonged, and the heat exchange efficiency is effectively increased.
The utility model discloses modular air conditioning unit's theory of operation does:
(1) winter mode of operation
The direct evaporative cooling unit and the mechanical refrigeration unit do not work, only the indirect evaporative cooling unit is started, a valve b28 and a circulating water pump b24 are closed, a water distribution device b27 does not work, outdoor fresh air enters the unit shell through a fresh air inlet 12, is filtered by a filler 17 and then is mixed with indoor return air entering the unit shell from an air inlet 18, then is filtered by an air filter 19, then enters a plate pipe of a plate pipe type heat exchanger 26, meanwhile, secondary air enters the unit shell through a secondary air inlet 25 and passes through the outer wall of the plate pipe, the mixed air in the plate pipe exchanges heat with the secondary air outside the plate pipe, then is sent into a room through an air supply outlet 30 through an air supply blower 31, and the secondary air absorbing heat is discharged through a secondary exhaust blower 21 and a secondary exhaust outlet 20.
(2) Transitional seasonal mode of operation
The direct evaporative cooling unit and the mechanical refrigeration unit do not work, the indirect evaporative cooling unit is started, the valve b28 and the circulating water pump b24 are started, the circulating water pump b24 conveys water in the water storage tank b23 to the water distribution device b27 through the water supply pipe b29, and the water distribution device b27 sprays on the plate-tube heat exchanger;
the secondary air enters the interior of the unit shell through a secondary air inlet 25, the secondary air vertically sweeps over the outer wall of the plate pipe from bottom to top to generate heat and moisture exchange with a water film outside the plate pipe, meanwhile, outdoor fresh air enters the unit shell through a fresh air inlet 12, is filtered by the filler 17 and then is mixed with indoor return air entering the unit shell through an air inlet 18, then is filtered by an air filter 19, passes through the plate pipe of the plate pipe type heat exchanger 26, heat is transferred to the secondary air through the pipe wall and the water film, the secondary air with the temperature reduced is sent into a room through an air supply opening 30 by an air feeder 31, and the secondary air absorbing heat is discharged through a secondary exhaust outlet 20 by a secondary exhaust.
(3) Summer operation mode
The direct evaporative cooling unit, the mechanical refrigeration unit and the indirect evaporative cooling unit are all started;
the working principle of a direct evaporative cooling unit water system is as follows: the circulating water pump a6 supplies the circulating water in the water storage tank a5 to the water distribution device a16 through a water supply pipe a, and the water distribution device a16 sprays the filler 17;
the working principle of an indirect evaporative cooling unit water system is as follows: the water in the water storage tank b23 is conveyed to a water distribution device b27 by a circulating water pump b24 through a water supply pipe b29, and the water distribution device b27 sprays the plate-tube heat exchanger;
outdoor fresh air enters the unit shell through the fresh air inlet 12, then is subjected to preliminary cooling and filtering through the filler 17, then exchanges heat with a condenser to reduce the condensation temperature, meanwhile, the indoor return air enters the shell of the unit through the air inlet 18 and is converged with the precooled outdoor fresh air, then the secondary air is filtered by an air filter 19 and enters the plate tubes of the plate tube type heat exchanger, the secondary air enters the interior of the unit shell through a secondary air inlet 25, the secondary air vertically sweeps the outer walls of the plate tubes from bottom to top, the heat and moisture exchange is carried out between the mixed air and the water film outside the plate pipe, the mixed air in the plate pipe transfers the heat to the secondary air outside the plate pipe through the pipe wall and the water film to carry out secondary cooling, then, the air is cooled by the evaporator 4 and sent into the room through the air outlet 30 by the blower 31, and the secondary air having absorbed heat is exhausted through the secondary air outlet 20 by the secondary exhaust fan 21.
In the invention, mechanical refrigeration is required to be started only in high-temperature weather in summer, the direct evaporative cooling unit and the indirect evaporative cooling unit are used as air precoolers to precool outdoor fresh air and indoor return air, and indirect evaporative cooling is used for natural cooling in transition seasons and winter, so that the installed capacity and the startup time of the mechanical refrigeration are greatly reduced, the manufacturing cost of a system is reduced, the operation energy consumption is saved, and the system efficiency is improved.
Claims (10)
1. The utility model provides a combination formula air conditioning unit that evaporative cooling and mechanical refrigeration combine, its characterized in that, includes the unit casing, be provided with fresh air mouth (12) and supply-air outlet (32) on the corresponding both sides wall of unit casing respectively, unit casing is inside to have set gradually direct evaporative cooling unit, condenser (2), air cleaner (19), indirect evaporative cooling unit, evaporimeter (4) and forced draught blower (31) according to the new trend flow direction, condenser (2) below still is provided with compressor (1), condenser (2) and evaporimeter (4) connect gradually and form closed circulation circuit, still be provided with air intake (18) on the unit casing lateral wall between air cleaner (19) and condenser (2).
2. Combined air conditioning unit according to claim 1, characterized in that a throttle valve (3) is also connected between the condenser (2) and the evaporator (4).
3. The combined air conditioning unit according to claim 1, wherein the direct evaporative cooling unit comprises a filler (17), a water distribution device a (16), a water baffle a (13), an exhaust fan (14) and an exhaust outlet (15) are sequentially arranged above the filler (17) from bottom to top, a water storage tank a (5) is arranged below the filler (17), the water distribution device a (16) and the water storage tank a (5) are connected through a water supply pipe a (11), and a circulating water pump a (6) is further connected to the water supply pipe a (11).
4. The combined air conditioning unit as claimed in claim 3, wherein the water storage tank a (5) is further connected with a water discharge pipe (7) and a water replenishing pipe (8), and a ball float valve a (9) is further installed at a position where the water replenishing pipe (8) extends into the water storage tank a (5).
5. The combined air conditioning unit according to claim 3, characterized in that a valve a (10) is further provided on the water supply pipe a (11).
6. Combined air conditioning unit according to claim 3, characterized in that the filler (17) is arranged obliquely towards the condenser (2).
7. The combined air conditioning unit according to any one of claims 1 to 3, wherein the indirect evaporative cooling unit comprises a plate-and-tube heat exchanger (26), a water distribution device b (27), a water baffle b (30), a secondary exhaust fan (21) and a secondary exhaust outlet (20) are sequentially arranged above the plate-and-tube heat exchanger (26) from bottom to top, a water storage tank b (23) is arranged below the plate-and-tube heat exchanger (26), the water distribution device b (27) and the water storage tank b (23) are connected through a water supply pipe b (29), a circulating water pump b (24) is further connected onto the water supply pipe b (29), and a secondary air inlet (25) is further arranged on a corresponding unit housing side wall between the plate-and-tube heat exchanger (26) and the water storage tank b (23).
8. The modular air conditioning unit of claim 7, wherein a valve b (28) is further provided on the water supply pipe b (29).
9. The combined air conditioning unit as claimed in claim 7, wherein the water storage tank b (23) is further connected with a water discharge pipe (7) and a water replenishing pipe (8), and a ball float valve b (22) is further installed at a position where the water replenishing pipe (8) extends into the water storage tank b (23).
10. The modular air conditioning unit as set forth in claim 7, wherein a water absorbent fiber material is attached to the outside of the plate tubes of the plate-tube heat exchanger (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921699765.3U CN211345637U (en) | 2019-10-11 | 2019-10-11 | Combined air conditioning unit combining evaporative cooling and mechanical refrigeration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921699765.3U CN211345637U (en) | 2019-10-11 | 2019-10-11 | Combined air conditioning unit combining evaporative cooling and mechanical refrigeration |
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| Publication Number | Publication Date |
|---|---|
| CN211345637U true CN211345637U (en) | 2020-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921699765.3U Expired - Fee Related CN211345637U (en) | 2019-10-11 | 2019-10-11 | Combined air conditioning unit combining evaporative cooling and mechanical refrigeration |
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| CN (1) | CN211345637U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115183361A (en) * | 2022-07-21 | 2022-10-14 | 深圳市民润环保科技有限公司 | Photovoltaic driven fresh air device |
-
2019
- 2019-10-11 CN CN201921699765.3U patent/CN211345637U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115183361A (en) * | 2022-07-21 | 2022-10-14 | 深圳市民润环保科技有限公司 | Photovoltaic driven fresh air device |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200825 Termination date: 20211011 |