CN106322594B - Evaporation type cooling device - Google Patents
Evaporation type cooling device Download PDFInfo
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- CN106322594B CN106322594B CN201510390884.0A CN201510390884A CN106322594B CN 106322594 B CN106322594 B CN 106322594B CN 201510390884 A CN201510390884 A CN 201510390884A CN 106322594 B CN106322594 B CN 106322594B
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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
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/0035—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using evaporation
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
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Abstract
The invention discloses an evaporative cooling device, which comprises a shell, a refrigerating fluid inlet, a refrigerating fluid outlet, an exhaust fan arranged on an air outlet at the top of the shell, a first heat exchanger arranged in an air inlet at the side surface of the shell, and a cooling fluid sprayer and a second heat exchanger which are arranged in the shell and positioned in an air channel communicated with the air inlet and the exhaust fan; the cooling liquid sprayer is positioned above the second heat exchanger; the first heat exchanger is a gas-liquid heat exchanger; the second heat exchanger is at least provided with a refrigerating fluid pipeline; the refrigerating fluid inlet, the liquid inlet end of the first heat exchanger, the liquid outlet end of the first heat exchanger, the refrigerating fluid pipeline inlet, the refrigerating fluid pipeline outlet and the refrigerating fluid outlet are sequentially communicated through pipelines. The evaporative cooling device can effectively prevent dust particles in the air from polluting the prepared low-temperature chilled water, avoid the phenomenon that a heat exchanger on the user side is blocked due to the dust particles in the low-temperature chilled water and the phenomenon that a pipeline is blocked when the low-temperature chilled water returns to the inside of the device, and prolong the service life of the device.
Description
Technical Field
The invention relates to the fields of refrigeration, air conditioning and chemical engineering, in particular to an evaporative cooling device.
Background
The conventional method for preparing low-temperature chilled water by using the existing cooling device comprises the following steps: utilize the compressor to compress into the higher steam of pressure the lower refrigerant steam of pressure, utilize high-pressure gas evaporation heat absorption principle to prepare the refrigerated water, but this kind of cooling device need adopt compressor and refrigerant system, and refrigerant system's the risk of revealing can appear after long-term operation, also can increase the maintenance cost of compressor simultaneously.
In order to avoid the above problems, an evaporative cooling device capable of cooling without a compressor and a refrigerant system is introduced in the market, and the evaporative cooling device is an open cooling system, as shown in fig. 7, the evaporative cooling device mainly comprises a shell 3, a chilled water inlet and outlet C, an exhaust fan 4 arranged in an air outlet 32 at the top of the shell 3, a gas-water heat exchanger 1 arranged in an air inlet 31 at the side wall of the shell 3, a chilled water sprayer 5 and a filler sheet 2 arranged in the shell 3; the chilled water sprayer 5 is arranged in an air duct communicating the air inlet 31 with the exhaust fan 4; the packing sheet 2 is positioned below the sprayer; the chilled water inlet and outlet C, the water inlet end 11 of the gas-water heat exchanger, the water outlet end 12 of the gas-water heat exchanger and the chilled water sprayer 5 are communicated in sequence through pipelines; and the bottom of the shell 3 which is used as a chilled water collecting tray 7 is also communicated with the chilled water inlet and outlet C through a circulating water pump 6 pipeline.
The return water at the user side enters the air-water heat exchanger 1 through the chilled water inlet and outlet C of the indirect evaporation type cooling device and then exchanges heat with outdoor air forcibly sucked by the exhaust fan 4, the chilled water is heated and then is transmitted to the chilled water sprayer 5, the chilled water is sprayed onto the filler pieces 2 from the chilled water sprayer 5, and then falls to the bottom of the shell 3 through the filler pieces 2, and then is transmitted to the user side from the chilled water inlet and outlet C to supply cold water to the user side.
The heat transfer process in the whole process is as follows: after the outdoor air forcibly sucked by the exhaust fan 4 exchanges heat with the air-water heat exchanger 1, the outdoor air is changed into low-temperature cold air which enters the shell 3 and carries out reverse mass transfer with the chilled water sprayed by the chilled water sprayer 5 so as to reduce the temperature of the sprayed chilled water, and the existing evaporative cooling device is also provided with the filler pieces 2, so that the contact area of the cold air and the sprayed chilled water is enlarged, and the heat exchange efficiency is greatly improved.
However, the conventional evaporative cooling device has the following problems after long-term operation:
because the refrigerated water directly sprays in casing 3, and casing 3 is equipped with air intake 31, the dust granule that suspends in the air is inhaled easily in casing 3 when air exhauster 4 inhales outdoor air under the circumstances of work, and deposit in the bottom of casing 3, not only can lead to the low temperature refrigerated water dirt of preparing many, lead to the dirt coefficient greatly increased of whole device, but also can cause user side heat exchanger to block up, when the part low temperature refrigerated water that contains the dust granule returns inside the device again through refrigerated water exit C simultaneously, cause the pipeline of device to block up easily, the life of device has been reduced, bring a great deal of inconvenience for the user.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide an evaporative cooling device, which can effectively prevent dust particles in air from polluting prepared low-temperature chilled water, avoid the phenomenon that a user side heat exchanger is blocked due to the dust particles in the low-temperature chilled water, avoid the phenomenon that a device pipeline is blocked when the prepared low-temperature chilled water returns to the interior of the device, and prolong the service life.
In order to solve the problems, the technical scheme adopted by the invention specifically comprises the following steps:
an evaporative cooling device comprises a shell, a refrigerating fluid inlet, a refrigerating fluid outlet, an exhaust fan arranged on an air outlet at the top of the shell, a first heat exchanger arranged in an air inlet at the side surface of the shell, and a cooling fluid sprayer and a second heat exchanger which are arranged in the shell and positioned in an air duct communicating the air inlet with the exhaust fan; the cooling liquid sprayer is positioned above the second heat exchanger; the first heat exchanger is a gas-liquid heat exchanger; the second heat exchanger is at least provided with a refrigerating fluid pipeline; the refrigerating fluid inlet, the liquid inlet end of the first heat exchanger, the liquid outlet end of the first heat exchanger, the refrigerating fluid pipeline inlet, the refrigerating fluid pipeline outlet and the refrigerating fluid outlet are sequentially communicated through pipelines.
The above is the basic scheme of the present invention.
As a preferable scheme of the basic scheme of the present invention, the number of the first heat exchangers is one or more, the air inlets correspond to the first heat exchangers one to one, and the corresponding first heat exchangers are installed in the corresponding air inlets; the number of the second heat exchangers is one or more.
As a first improvement of the preferred scheme of the invention, the number of the first heat exchangers is two, and the number of the air inlets on the side surface of the shell is two; the two first heat exchangers are respectively and correspondingly arranged in the two air inlets; the liquid inlet ends of the two first heat exchangers are communicated with a refrigerating fluid inlet, and the liquid outlet ends of the two first heat exchangers are communicated with a refrigerating fluid pipeline inlet of the second heat exchanger.
As a second improvement of the preferred embodiment of the present invention, the number of the second heat exchangers is two; the inlet and the outlet of the refrigerating fluid pipeline of the first second heat exchanger are respectively and correspondingly communicated with the liquid outlet end of the first heat exchanger and the inlet of the refrigerating fluid pipeline of the second heat exchanger, and the outlet of the refrigerating fluid pipeline of the second heat exchanger is communicated with the refrigerating fluid outlet.
As a preferable scheme on the basis of the second improvement, the evaporative cooling device further comprises a refrigerating fluid circulating pump, an inlet pipeline of the refrigerating fluid circulating pump is communicated with the outlet of the refrigerating fluid pipeline of the first second heat exchanger, and an outlet pipeline of the refrigerating fluid circulating pump is communicated with the inlet of the refrigerating fluid.
As a third improvement of the preferred embodiment of the present invention, the number of the first heat exchanger and the second heat exchanger is two; the number of the air inlets on the side surface of the shell is two; the two first heat exchangers are respectively and correspondingly arranged in the two air inlets; the liquid inlet ends of the two first heat exchangers are communicated with a refrigerating fluid inlet, the liquid outlet ends of the two first heat exchangers are communicated with a refrigerating fluid pipeline inlet of the first second heat exchanger, a refrigerating fluid pipeline outlet of the first second heat exchanger is communicated with a refrigerating fluid pipeline inlet of the second heat exchanger, and a refrigerating fluid pipeline outlet of the second heat exchanger is communicated with a refrigerating fluid outlet.
As a preferable scheme on the basis of the third improvement, the evaporative cooling device further comprises a refrigerating fluid circulating pump, an inlet pipeline of the refrigerating fluid circulating pump is communicated with an outlet of the refrigerating fluid pipeline of the first second heat exchanger, and an outlet pipeline of the refrigerating fluid circulating pump is communicated with the refrigerating fluid inlet.
As a further preferable scheme of the five basic schemes, preferable schemes, the first improvement, the second improvement and the third improvement of the invention, the evaporative cooling device further comprises a refrigerating fluid circulating pump, an inlet pipeline of the refrigerating fluid circulating pump is communicated with the refrigerating fluid outlet, and an outlet pipeline of the refrigerating fluid circulating pump is communicated with the refrigerating fluid inlet.
As a further improvement of the seventh of the basic solution, the preferable solution, the first improvement, the second improvement, the preferable solution on the basis of the second improvement, the third improvement, and the preferable solution on the basis of the third improvement, the evaporative cooling device of the present invention further includes a cooling liquid collecting tray and a cooling liquid circulating pump; the cooling liquid collecting disc is arranged in the shell and is positioned below the second heat exchanger; and an inlet pipeline of the cooling liquid circulating pump is communicated with the cooling liquid collecting disc, and an outlet pipeline of the cooling liquid circulating pump is communicated with the cooling liquid sprayer.
As a further improvement of the seventh basic solution, the preferred solution, the first improvement, the second improvement, the preferred solution on the basis of the second improvement, the third improvement and the preferred solution on the basis of the third improvement, the refrigerating fluid inlet pipeline is communicated with the liquid outlet end of the first heat exchanger.
Compared with the prior art, the invention has the beneficial effects that:
the evaporative cooling device has the structure that the refrigerating fluid flows in the pipelines among the refrigerating fluid inlet, the first heat exchanger, the second heat exchanger and the refrigerating fluid outlet, and the indirect heat transfer mode that firstly the sprayed cooling fluid directly exchanges heat with the cooled air sucked into the shell and then the sprayed cooling fluid exchanges heat with the refrigerating fluid flowing in the second heat exchanger is adopted, so that the refrigerating fluid is cooled, meanwhile, the refrigerating fluid is prevented from directly contacting with the air, the prepared low-temperature refrigerating fluid is prevented from being polluted by dust particles in the air, the phenomenon that the user side heat exchanger is blocked due to the dust particles in the low-temperature refrigerating fluid is avoided, the phenomenon that the prepared low-temperature refrigerating fluid blocks the pipeline of the device when the prepared low-temperature refrigerating fluid returns to the interior of the device is also avoided, and the service life of the device is prolonged.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of a first preferred embodiment of an evaporative cooling device of the present invention;
FIG. 2 is a schematic diagram of a second preferred embodiment of the evaporative cooling apparatus of the present invention;
FIG. 3 is a schematic diagram of a third preferred embodiment of the evaporative cooling device of the present invention;
FIG. 4 is a schematic diagram of a fourth preferred embodiment of the evaporative cooling device of the present invention;
FIG. 5 is a schematic diagram of a fifth preferred embodiment of the evaporative cooling device of the present invention;
fig. 6 is a schematic diagram of a sixth preferred embodiment of the evaporative cooling device of the present invention;
fig. 7 is a schematic structural view of a conventional evaporative cooling device.
Wherein the reference numerals of fig. 1 to 6 are explained as follows:
1. a first heat exchanger; 11. the liquid inlet end of the first heat exchanger; 12. the liquid outlet end of the first heat exchanger; 2. a second heat exchanger; 21. a chilled liquid pipe inlet; 22. an outlet of the refrigerating fluid pipeline; 3. a housing; 31. an air inlet; 32. an air outlet; 4. an exhaust fan; 5. a coolant sprayer; 6. a coolant circulation pump; 61. an inlet of a coolant circulation pump; 62. an outlet of the cooling liquid circulating pump; 7. a coolant collection pan; 8. a refrigerating fluid circulating pump; 81. the inlet of the refrigerating fluid circulating pump; 82. an outlet of the refrigerating fluid circulating pump; 9. a refrigerating fluid flow regulating valve; 91. the inlet of the refrigerating fluid flow regulating valve; 92. the outlet of the refrigerating fluid flow regulating valve; A. a refrigerating fluid inlet; B. and a refrigerating fluid outlet.
The reference numerals of fig. 7 are explained as follows:
1. a gas-water heat exchanger; 11. the water inlet end of the gas-water heat exchanger; 12. the water outlet end of the gas-water heat exchanger; 2. a filler sheet; 3. a housing; 31. an air inlet; 32. an air outlet; 4. an exhaust fan; 5. a chilled water sprayer; 6. a water circulating pump; 7. a chilled water catch pan; C. and (6) a chilled water inlet and outlet.
In fig. 1 to 6, the direction of the dotted arrow is the air flow direction, and the direction of the arrow on the pipe is the refrigerant flow direction.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, characteristics and effects according to the present invention with reference to the accompanying drawings and preferred embodiments is as follows:
example one
Fig. 1 shows a first embodiment of the evaporative cooling device of the present invention, which comprises a housing 3, a refrigerant liquid inlet a, a refrigerant liquid outlet B, an exhaust fan 4 disposed on an air outlet 32 at the top of the housing 3, a first heat exchanger 1 disposed in an air inlet 31 at the side of the housing 3, and a coolant sprayer 5 and a second heat exchanger 2 disposed in the housing 3 and located in an air duct communicating the air inlet 31 and the exhaust fan 4; the cooling liquid sprayer 5 is positioned above the second heat exchanger 2; the first heat exchanger 1 is a gas-liquid heat exchanger; the second heat exchanger 2 is at least provided with a refrigerating fluid pipeline; the refrigerating fluid inlet A, the liquid inlet end 11 of the first heat exchanger, the liquid outlet end 12 of the first heat exchanger, the refrigerating fluid pipeline inlet 21, the refrigerating fluid pipeline outlet 22 and the refrigerating fluid outlet B are communicated in sequence through pipelines.
In order to recycle the cooling liquid and save energy and protect environment, the evaporative cooling device also comprises a cooling liquid collecting tray 7 and a cooling liquid circulating pump 6; the cooling liquid collecting tray 7 is arranged in the shell 3 and is positioned below the second heat exchanger 2; an inlet 61 of the cooling liquid circulating pump is communicated with the cooling liquid collecting tray 7 through a pipeline, and an outlet 62 of the cooling liquid circulating pump is communicated with the cooling liquid sprayer 5 through a pipeline.
The number of the first heat exchangers 1 is one or more, the air inlets 31 correspond to the first heat exchangers 1 one by one, and the corresponding first heat exchangers 1 are installed in the corresponding air inlets 31; the number of the second heat exchangers 2 is one or more. In order to simplify the structure, as a preferred embodiment of the present embodiment, the number of the first heat exchanger 1 and the second heat exchanger 2 is one. In addition, the refrigerating fluid of the present invention may be water or any fluid that needs to be cooled except water, and similarly, the cooling fluid may be water or any liquid that can be used to cool an object except water.
The principle of the evaporative cooling device of the present invention is described as follows:
refrigerating fluid to be cooled enters the first heat exchanger 1 through a liquid inlet end 11 of the first heat exchanger and exchanges heat with normal-temperature air around the first heat exchanger 1 under the action of an exhaust fan 4, the refrigerating fluid to be cooled absorbs heat of the normal-temperature air and then is heated into high-temperature refrigerating fluid, the high-temperature refrigerating fluid enters a refrigerating fluid pipeline of the second heat exchanger 2, and the normal-temperature air is cooled into low-temperature air due to heat loss and flows in the direction of the second heat exchanger 2 so as to prepare for reverse-path mass transfer heat exchange with cooling fluid sprayed by the cooling fluid sprayer 5;
the cooling liquid in the cooling liquid sprayer 5 is sprayed onto the surface of the second heat exchanger 2, part of the cooling liquid is evaporated and is cooled after contacting with the low-temperature air, the theoretical limit temperature of the cooled evaporated cooling liquid is the dew point temperature of the air, the cooled evaporated cooling liquid exchanges heat with the cooling liquid which is not evaporated again to cool the cooling liquid which is not evaporated, and the theoretical limit temperature of the cooled cooling liquid which is not evaporated is also the dew point temperature of the air; the cooling liquid which is not evaporated on the surface of the second heat exchanger 2 is cooled by the evaporation cooling liquid and exchanges heat with the high-temperature cooling liquid flowing in the cooling liquid pipeline of the second heat exchanger 2, so that the high-temperature cooling liquid in the second heat exchanger 2 is cooled into low-temperature cooling liquid, the theoretical limit temperature of the low-temperature cooling liquid is also the dew point temperature of air, and finally the low-temperature cooling liquid is output to the user side through a cooling liquid outlet B, so that the user side can obtain clean cooling liquid at a lower temperature without a cold source;
finally, the unevaporated cooling liquid below the second heat exchanger 2 continuously exchanges heat with the evaporated cooling liquid to reduce the temperature until the cooling liquid falls back to the cooling liquid collecting tray 7, and is pumped into the cooling liquid sprayer 5 again under the action of the cooling liquid circulating pump 6 for recycling;
the outdoor air forcibly sucked by the exhaust fan 4 is in countercurrent contact with the cooling liquid sprayed from top to bottom in the device after being cooled by the first heat exchanger 1, so that the evaporation of the cooling liquid is accelerated, the heat of the cooling liquid in the second heat exchanger 2 and the heat of the cooling liquid outside the second heat exchanger 2 are taken away by utilizing the evaporation latent heat of the cooling liquid, and the air is cooled and humidified into low-temperature high-humidity air due to the evaporation of the cooling liquid and is discharged to the atmosphere by the exhaust fan 4.
Due to the adoption of the structure, the evaporative cooling device enables the refrigerating fluid to flow in the pipelines among the refrigerating fluid inlet A, the first heat exchanger 1, the second heat exchanger 2 and the refrigerating fluid outlet B, and combines an indirect heat transfer mode that firstly the sprayed cooling fluid directly exchanges heat with the cooled air sucked into the shell 3 and then the sprayed cooling fluid exchanges heat with the refrigerating fluid flowing in the second heat exchanger 2, so that the refrigerating fluid is cooled, meanwhile, the refrigerating fluid is prevented from directly contacting with the air, dust particles in the air are prevented from polluting the prepared low-temperature refrigerating fluid, the phenomenon that the user side heat exchanger is blocked due to the dust particles in the low-temperature refrigerating fluid is avoided, the phenomenon that the prepared low-temperature refrigerating fluid blocks the pipeline when returning to the interior of the device is also avoided, and the service life of the device is prolonged.
In order to save production cost and improve production efficiency, the first heat exchanger 1 is any one of a fin type heat exchanger or a micro-channel type heat exchanger, and the second heat exchanger 2 is any one of a micro-channel type heat exchanger or a serpentine type tube type heat exchanger or a plate tube type heat exchanger.
Example two
Fig. 2 is a second embodiment of the evaporative cooling device of the present invention, which differs from the first embodiment shown in fig. 1 only in that: the evaporative cooling device also comprises a refrigerating fluid circulating pump 8, an inlet 81 pipeline of the refrigerating fluid circulating pump is communicated with a refrigerating fluid outlet B, an outlet 82 pipeline of the refrigerating fluid circulating pump is communicated with the refrigerating fluid inlet A, so that the prepared low-temperature refrigerating fluid is divided into two paths, one path of the low-temperature refrigerating fluid flows to the refrigerating fluid outlet B to be output to a user side for use, the other path of the low-temperature refrigerating fluid can be injected into the evaporative cooling device again, the temperature of the refrigerating fluid at the refrigerating fluid inlet A is further reduced, the refrigerating fluid in the first heat exchanger 1 can be increased only by absorbing more heat to the air around the first heat exchanger 1, the aim of further reducing the temperature of the air around the first heat exchanger 1 is fulfilled, when the air is sucked into the shell 3 by the exhaust fan 4, the cooling effect of the sprayed cooling fluid can be accelerated, and the cooling speed of the refrigerating fluid in the second heat exchanger 2 is finally accelerated, the heat exchange efficiency of the evaporative cooling device is greatly improved.
EXAMPLE III
Fig. 3 is a third embodiment of the evaporative cooling device of the present invention, which differs from the first embodiment shown in fig. 1 only in that: in this embodiment, one more first heat exchanger 1 is added, specifically: the number of the first heat exchangers 1 is two, and the number of the air inlets 31 on the side surface of the shell 3 is two; the two first heat exchangers 1 are respectively and correspondingly installed in the two air inlets 31; liquid inlet ends 11 of the two first heat exchangers are communicated with a refrigerating fluid inlet A, and liquid outlet ends 12 of the two first heat exchangers are communicated with a refrigerating fluid pipeline inlet 21 of the second heat exchanger 2.
The specific flow direction of the refrigerating fluid is as follows: refrigerating fluid to be cooled enters the evaporative cooling device through a refrigerating fluid inlet A, then is divided into two paths to flow into the two first heat exchangers 1 respectively to exchange heat with outdoor air forcibly sucked by the exhaust fan 4, the refrigerating fluid is heated and then is sent into a refrigerating fluid pipeline of the second heat exchanger 2 at the lower part of the cooling fluid sprayer 5 to be cooled, and the cooled refrigerating fluid supplies cold to a user side through a refrigerating fluid outlet B of the evaporative cooling device.
Compared with the first embodiment that only one first heat exchanger 1 is adopted, the embodiment enables twice more cold low-temperature air in the shell 3 to flow to the second heat exchanger 2, so that the refrigerating fluid in the second heat exchanger 2 can be cooled to the target temperature more quickly, the heat exchange efficiency of the second heat exchanger 2 is greatly improved, and the heat exchange efficiency of the evaporative cooling device is improved.
Example four
Fig. 4 is a fourth embodiment of the evaporative cooling device of the present invention, which differs from the first embodiment shown in fig. 1 in two points.
The first difference is that: the number of the second heat exchangers 2 in the embodiment is two; the inlet 21 and the outlet 22 of the refrigerant liquid pipeline of the first second heat exchanger 2 are respectively and correspondingly communicated with the liquid outlet end 12 of the first heat exchanger and the inlet 21 of the refrigerant liquid pipeline of the second heat exchanger, and the outlet 22 of the refrigerant liquid pipeline of the second heat exchanger 2 is communicated with the refrigerant liquid outlet B. As a further preferable mode of this embodiment, the two second heat exchangers 2 are arranged in the up-down direction, and the first second heat exchanger 2 is located below the coolant sprayer 5, and the second heat exchanger 2 is located below the first second heat exchanger 2.
The specific flow direction of the refrigerating fluid is as follows: refrigerating fluid to be cooled enters the evaporative cooling device through a refrigerating fluid inlet A, flows into the first heat exchanger 1 and exchanges heat with outdoor air forcibly sucked by the exhaust fan 4, the refrigerating fluid is heated and then is sent into a refrigerating fluid pipeline of the first second heat exchanger 2 at the lower part of the cooling fluid sprayer 5 to be cooled, the cooled refrigerating fluid is sent into a refrigerating fluid pipeline of the second heat exchanger 2 to be cooled for the second time, and finally, the refrigerating fluid is supplied to a user side through a refrigerating fluid outlet B of the evaporative cooling device.
Compared with the first embodiment that only one second heat exchanger 2 is adopted, the embodiment uses two second heat exchangers 2, and the refrigerating fluid output from the liquid outlet end 12 of the first heat exchanger is cooled for the second time, so that the refrigerating fluid is cooled to the target temperature more quickly, and the heat exchange efficiency of the evaporative cooling device is greatly improved.
The second difference is that: the evaporative cooling device of this embodiment further includes a refrigerating fluid circulating pump 8, an inlet 81 of the refrigerating fluid circulating pump is in pipe communication with the refrigerating fluid pipe outlet 22 of the first second heat exchanger 2, an outlet 82 of the refrigerating fluid circulating pump is in pipe communication with the refrigerating fluid inlet a, so that the low-temperature refrigerating fluid produced by the first second heat exchanger 2 is divided into two paths, one path of the low-temperature refrigerating fluid flows to the second heat exchanger 2 for secondary cooling, and the other path of the low-temperature refrigerating fluid can be re-injected into the evaporative cooling device, thereby further reducing the temperature of the refrigerating fluid at the refrigerating fluid inlet a, so that the refrigerating fluid in the first heat exchanger 1 can be raised in temperature by absorbing more heat to the air around the first heat exchanger 1, so as to achieve the purpose of further reducing the temperature of the air around the first heat exchanger 1, and when the air is sucked into the casing 3 by the exhaust fan 4, the cooling effect of the sprayed cooling fluid can be accelerated, finally, the cooling speed of the refrigerating fluid in the second heat exchanger 2 is further increased, and the heat exchange efficiency of the evaporative cooling device is further improved.
EXAMPLE five
Fig. 5 is a fifth embodiment of the evaporative cooling device of the present invention, which differs from the third embodiment shown in fig. 3 in two points.
The first difference is that: the refrigerating fluid inlet A is communicated with the liquid outlet end 12 of the first heat exchanger through a pipeline, so that refrigerating fluid at the refrigerating fluid inlet A is directly guided to the liquid outlet end 12 of the first heat exchanger, the temperature of the refrigerating fluid flowing into the refrigerating fluid pipeline of the second heat exchanger 2 is reduced, the heat exchange efficiency of the second heat exchanger 2 is improved, and the purpose of improving the heat exchange efficiency of the evaporative cooling device is achieved.
As a more preferable scheme of this embodiment, the evaporative cooling device of the present invention further includes a refrigerant flow control valve 9, the refrigerant inlet a is in pipeline communication with the inlet 91 of the refrigerant flow control valve, the outlet 92 of the refrigerant flow control valve is in pipeline communication with the liquid outlet end 12 of the first heat exchanger, and by setting the refrigerant flow control valve 9, the flow of the refrigerant directly guided to the refrigerant inlet of the liquid outlet end 12 of the first heat exchanger can be controlled, so as to realize the function of adjusting the heat exchange efficiency of the second heat exchanger 2, and meet the use requirements of users for the diversification of functions of the evaporative cooling device of the present invention.
The second difference is that: the evaporative cooling device also comprises a refrigerating fluid circulating pump 8, wherein an inlet 81 pipeline of the refrigerating fluid circulating pump is communicated with the refrigerating fluid outlet B, and an outlet 82 pipeline of the refrigerating fluid circulating pump is communicated with the refrigerating fluid inlet A, so that the prepared low-temperature refrigerating fluid is divided into two paths, and one path of low-temperature refrigerating fluid flows to the refrigerating fluid outlet B to be output to a user side for use; the other path of the refrigerant can be injected into the evaporative cooling device again to further reduce the temperature of the refrigerant at the refrigerant inlet A, so that on one hand, the temperature of the refrigerant in the first heat exchanger 1 can be increased by absorbing more heat to the air around the first heat exchanger 1 to further reduce the temperature of the air around the first heat exchanger 1, and when the air is sucked into the shell 3 by the exhaust fan 4, the cooling effect of the air on the sprayed refrigerant can be accelerated, the cooling speed of the refrigerant in the second heat exchanger 2 is finally accelerated, and the heat exchange efficiency of the evaporative cooling device is improved; on the other hand, due to the existence of the first difference point, the temperature of the refrigerant liquid in the refrigerant liquid pipeline flowing into the second heat exchanger 2 can be further reduced, and the heat exchange efficiency of the second heat exchanger 2 can be further improved, so that the heat exchange efficiency of the evaporative cooling device can be further improved.
Example six
Fig. 6 is a sixth embodiment of the evaporative cooling device of the present invention, which differs from the first embodiment shown in fig. 1 in two points.
The first difference is that: the number of the first heat exchanger 1 and the second heat exchanger 2 is two; the number of the air inlets 31 on the side surface of the shell 3 is two; the two first heat exchangers 1 are respectively and correspondingly installed in the two air inlets 31; the liquid inlet ends 11 of the two first heat exchangers are communicated with a refrigerating fluid inlet A, the liquid outlet ends 12 of the two first heat exchangers are communicated with a refrigerating fluid pipeline inlet 21 of the first second heat exchanger 2, a refrigerating fluid pipeline outlet 22 of the first second heat exchanger 2 is communicated with a refrigerating fluid pipeline inlet 21 of the second heat exchanger 2, and a refrigerating fluid pipeline outlet 22 of the second heat exchanger 2 is communicated with a refrigerating fluid outlet B. As a further preferable mode of this embodiment, the two second heat exchangers 2 are arranged in the up-down direction, and the first second heat exchanger 2 is located below the coolant sprayer 5, and the second heat exchanger 2 is located below the first second heat exchanger 2.
The specific flow direction of the refrigerating fluid is as follows: refrigerating fluid to be cooled enters the evaporative cooling device through a refrigerating fluid inlet A, then flows into the two first heat exchangers 1 in two paths to exchange heat with outdoor air forcibly sucked by the exhaust fan 4, the refrigerating fluid is heated and then is sent into a refrigerating fluid pipeline of the first second heat exchanger 2 at the lower part of the cooling fluid sprayer 5 to be cooled, the cooled refrigerating fluid is sent into a refrigerating fluid pipeline of the second heat exchanger 2 to be cooled for the second time, and finally, the refrigerating fluid is supplied to a user side through a refrigerating fluid outlet B of the evaporative cooling device.
Compared with the first embodiment that only one first heat exchanger 1 and one second heat exchanger 2 are adopted, on one hand, the two first heat exchangers 1 can enable twice as much cold low-temperature air in the shell 3 to flow to the second heat exchanger 2, so that the heat exchange efficiency of the second heat exchanger 2 is greatly improved, on the other hand, the two second heat exchangers 2 are adopted, so that the refrigerating fluid output from the liquid outlet ends 12 of the two first heat exchangers is cooled for the second time, the refrigerating fluid is cooled to the target temperature more quickly, and the heat exchange efficiency of the evaporative cooling device is greatly improved.
The second difference is that: the evaporative cooling device of the embodiment further comprises a refrigerating fluid circulating pump 8, an inlet 81 pipeline of the refrigerating fluid circulating pump is communicated with the refrigerating fluid pipeline outlet 22 of the first second heat exchanger 2, an outlet 82 pipeline of the refrigerating fluid circulating pump is communicated with the refrigerating fluid inlet a, so that the prepared low-temperature refrigerating fluid is divided into two paths, one path of the low-temperature refrigerating fluid flows to the second heat exchanger 2 for secondary cooling, the other path of the low-temperature refrigerating fluid can be re-injected into the evaporative cooling device, the temperature of the refrigerating fluid at the refrigerating fluid inlet a is further reduced, the refrigerating fluid in the two first heat exchangers 1 can be increased in temperature by respectively absorbing more heat to the air around the two first heat exchangers 1, the purpose of further reducing the temperature of the air around the two first heat exchangers 1 is achieved, and when the air is sucked into the shell 3 by the exhaust fan 4, the cooling effect of the sprayed cooling fluid can be accelerated, finally, the cooling speed of the refrigerating fluid in the two second heat exchangers 2 is further increased, and the heat exchange efficiency of the evaporative cooling device is further improved.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (4)
1. An evaporative cooling device, characterized by: the refrigerating device comprises a shell, a refrigerating fluid inlet, a refrigerating fluid outlet, an exhaust fan, a first heat exchanger, a cooling fluid sprayer and a second heat exchanger, wherein the exhaust fan is arranged on an air outlet at the top of the shell; the cooling liquid sprayer is positioned above the second heat exchanger; the first heat exchanger is a gas-liquid heat exchanger; the second heat exchanger is at least provided with a refrigerating fluid pipeline; the number of the first heat exchanger and the second heat exchanger is two; the number of the air inlets on the side surface of the shell is two; the two first heat exchangers are respectively and correspondingly arranged in the two air inlets; the liquid inlet ends of the two first heat exchangers are communicated with a refrigerating fluid inlet, the liquid outlet ends of the two first heat exchangers are communicated with a refrigerating fluid pipeline inlet of the first second heat exchanger, a refrigerating fluid pipeline outlet of the first second heat exchanger is communicated with a refrigerating fluid pipeline inlet of the second heat exchanger, and a refrigerating fluid pipeline outlet of the second heat exchanger is communicated with a refrigerating fluid outlet.
2. The evaporative cooling device as claimed in claim 1, wherein: the refrigerating fluid circulating pump is characterized by further comprising a refrigerating fluid circulating pump, an inlet pipeline of the refrigerating fluid circulating pump is communicated with an outlet of a refrigerating fluid pipeline of the first second heat exchanger, and an outlet pipeline of the refrigerating fluid circulating pump is communicated with an inlet of the refrigerating fluid.
3. The evaporative cooling device as claimed in claim 1, wherein: still include the refrigerating fluid circulating pump, refrigerating fluid circulating pump inlet pipeline intercommunication the refrigerating fluid export, refrigerating fluid circulating pump outlet pipeline intercommunication the refrigerating fluid import.
4. The evaporative cooling device as claimed in claim 1, wherein: the cooling liquid collecting tray and the cooling liquid circulating pump are also included; the cooling liquid collecting disc is arranged in the shell and is positioned below the second heat exchanger; and an inlet pipeline of the cooling liquid circulating pump is communicated with the cooling liquid collecting disc, and an outlet pipeline of the cooling liquid circulating pump is communicated with the cooling liquid sprayer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510390884.0A CN106322594B (en) | 2015-07-03 | 2015-07-03 | Evaporation type cooling device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510390884.0A CN106322594B (en) | 2015-07-03 | 2015-07-03 | Evaporation type cooling device |
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| CN106322594A CN106322594A (en) | 2017-01-11 |
| CN106322594B true CN106322594B (en) | 2022-07-12 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109631652A (en) * | 2018-12-11 | 2019-04-16 | 上海市建筑科学研究院 | It is a kind of adapt to District of Shanghai power-efficient data in core cooling system |
| CN112361694A (en) * | 2020-10-26 | 2021-02-12 | 湖南省鼎兴建筑建材有限公司 | Refrigerating fluid preparation device for refrigerating unit |
| CN112839482B (en) * | 2020-12-11 | 2024-05-31 | 青岛海尔新能源电器有限公司 | Heat pump unit and heat dissipation control method of controller |
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Denomination of invention: An evaporative cooling device Effective date of registration: 20221219 Granted publication date: 20220712 Pledgee: China Co. truction Bank Corp Guangzhou Liwan branch Pledgor: GUANGZHOU WIDE INDUSTRIAL Co.,Ltd. Registration number: Y2022980027703 |