CN108518832B - Solution heat recovery unit - Google Patents
Solution heat recovery unit Download PDFInfo
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- CN108518832B CN108518832B CN201810349810.6A CN201810349810A CN108518832B CN 108518832 B CN108518832 B CN 108518832B CN 201810349810 A CN201810349810 A CN 201810349810A CN 108518832 B CN108518832 B CN 108518832B
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- heat exchange
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- tower body
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- 238000011084 recovery Methods 0.000 title claims abstract description 52
- 238000002955 isolation Methods 0.000 claims abstract description 25
- 239000007921 spray Substances 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims description 137
- 239000000945 filler Substances 0.000 claims description 33
- 238000005507 spraying Methods 0.000 claims description 9
- 230000000903 blocking effect Effects 0.000 claims description 4
- 238000012546 transfer Methods 0.000 abstract description 22
- 238000000034 method Methods 0.000 description 4
- 238000004378 air conditioning Methods 0.000 description 3
- 238000001802 infusion Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
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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
- F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
- F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
- F24F12/002—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using an intermediate heat-transfer fluid
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/56—Heat recovery units
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention provides a solution heat recovery unit which comprises a tower body, an airflow isolation layer, a solution circulation unit, a return air heat exchange unit and a fresh air heat exchange unit, wherein the tower body is provided with a plurality of air inlets; the inner space of the tower body is divided into a first heat exchange area and a second heat exchange area by the airflow isolation layer; the solution circulation unit conveys the heat exchange solution to the top of the tower body and sprays the heat exchange solution from top to bottom so that the heat exchange solution returns to the bottom of the tower body after sequentially passing through the first heat exchange area and the second heat exchange area; the return air heat exchange unit is arranged in the first heat exchange area and is used for enabling indoor return air to exchange heat with the heat exchange solution and then to be discharged to the outside; the fresh air heat exchange unit is arranged in the second heat exchange area and used for enabling the outdoor fresh air heat exchange solution to exchange heat and then send the heat to the indoor. Thereby make new trend and exhaust air and heat transfer solution carry out the heat transfer along the direction of height of tower body against current, effectively improve heat exchange efficiency, solved the solution heat recovery unit heat recovery efficiency among the prior art lower problem.
Description
Technical Field
The invention relates to the field of air conditioning equipment, in particular to a solution heat recovery unit.
Background
In the design of an air conditioning system, when the fresh air and indoor exhaust air have a large temperature difference, a heat recovery unit is required to recover the energy of the exhaust air. Because the heat recovery unit does not have high-energy consumption equipment such as a host machine, the heat recovery unit can obtain larger cold (heat) quantity, and has great significance for energy conservation of an air conditioning system.
Common heat recovery units generally include plate-fin type, rotary-wheel type, solution type, heat pipe type and the like. The solution type heat recovery unit has the advantages of full heat recovery function, low air leakage rate, high heat recovery efficiency, no icing (frost) and the like, and has huge use potential.
The existing solution heat recovery unit is mainly in a cross flow mode due to process limitation, and the heat recovery efficiency is low. In order to improve the heat recovery efficiency, a solution heat recovery unit in a multi-stage cross flow mode is generally adopted to be connected in series, and the efficiency is higher as the number of series is larger. Each level of solution circulation needs to be provided with an independent solution pump, so that the multi-level cross-flow heat recovery unit is connected in series, the number of the solution pumps is large, the solution circulation amount is large, the pipeline is complex, and the pump consumption is high. Meanwhile, due to the fact that the unit is increased, the unit is large in size, the filling amount of the solution is large, and a large liquid storage tank is needed. In order to prevent overflow, communicating pipes are communicated between all levels of liquid storage tanks, so that solutions with different temperatures are mixed, and certain heat loss is brought.
Disclosure of Invention
The invention mainly aims to provide a solution heat recovery unit, which aims to solve the problem of lower heat recovery efficiency of the solution heat recovery unit in the prior art.
In order to achieve the above object, the present invention provides a solution heat recovery unit comprising: a tower body; the airflow isolation layer is arranged in the tower body to divide the inner space of the tower body into a first heat exchange area positioned at the top and a second heat exchange area positioned at the bottom; the solution circulation unit is used for conveying the heat exchange solution at the bottom of the tower body to the top of the tower body and spraying the heat exchange solution from top to bottom along the height direction of the tower body so that the heat exchange solution returns to the bottom of the tower body after sequentially passing through the first heat exchange area and the second heat exchange area; the return air heat exchange unit is arranged in the first heat exchange area and is used for enabling indoor return air entering the first heat exchange area to exchange heat with the sprayed heat exchange solution and then to be discharged to the outside; the fresh air heat exchange unit is arranged in the second heat exchange area and is used for enabling outdoor fresh air entering the second heat exchange area to exchange heat with the heat exchange solution subjected to heat exchange in the first heat exchange area and then to be sent to the room.
Further, the return air heat exchange unit includes: the first filler block is arranged in the first heat exchange area and divides the first heat exchange area into a return air area positioned at the lower part and a exhaust air area positioned at the upper part; the outer wall of the tower body is provided with an air return opening communicated with the air return area and an air outlet communicated with the air exhaust area, so that indoor air return enters the first heat exchange area from the air return opening and is discharged outdoors from the air outlet after heat exchange is carried out through the first filler block.
Further, the return air inlet is arranged on the side wall of the tower body, and the exhaust outlet is arranged on the top wall of the tower body.
Further, the fresh air heat exchange unit includes: the second filler block is arranged in the second heat exchange area and divides the second heat exchange area into a fresh air area positioned at the lower part and a air supply area positioned at the upper part; the outer wall of the tower body is provided with a fresh air port communicated with the fresh air area and an air supply port communicated with the air supply area, so that outdoor fresh air enters the second heat exchange area through the fresh air port and is sent to the room through the air supply port after heat exchange is carried out through the second filler blocks.
Further, the air inlet and the air outlet are respectively arranged on two opposite side walls of the tower body.
Further, the solution circulation unit includes: and the liquid storage tank is arranged at the bottom of the tower body and used for collecting heat exchange solution returned through the first heat exchange area and the second heat exchange area.
Further, the solution circulation unit further includes: the liquid distributor is arranged at the top of the tower body; the liquid distributor is communicated with the liquid storage tank through the liquid delivery pipeline; the liquid distributor is used for spraying the heat exchange solution to the first heat exchange area and the second heat exchange area from top to bottom along the height direction of the tower body.
Further, the liquid distributor comprises a plurality of spray heads which are arranged at intervals along the horizontal direction.
Further, an air return port and an air outlet are formed in the outer wall of the tower body, so that indoor return air enters the first heat exchange area from the air return port and is discharged to the outside from the air outlet; wherein the solution circulation unit further comprises: the first liquid baffle is arranged at the air outlet and positioned above the liquid distributor and is used for blocking heat exchange solution sprayed by the liquid distributor from being discharged outdoors along with indoor return air.
Further, a fresh air inlet and an air supply outlet are formed in the outer wall of the tower body, and outdoor fresh air enters the second heat exchange area through the fresh air inlet and is supplied indoors through the air supply outlet; wherein the solution circulation unit further comprises: the second liquid baffle is arranged at the air supply opening and used for blocking heat exchange solution entering the second heat exchange area from being sent indoors along with outdoor fresh air.
Further, the airflow isolation layer includes: the first liquid distribution plate is arranged in the tower body; the first liquid distribution plate is provided with a plurality of first liquid distribution holes, so that heat exchange solution passing through the first heat exchange area enters the second heat exchange area through the first liquid distribution holes, indoor return air is prevented from entering the second heat exchange area from the first heat exchange area, and outdoor fresh air is prevented from entering the first heat exchange area from the second heat exchange area.
Further, the airflow isolation layer further includes: the second liquid distribution plates are arranged below the first liquid distribution plates at intervals; the second liquid distribution plate is provided with a plurality of second liquid distribution holes so that the heat exchange solution passing through the first liquid distribution holes is sprayed on the fresh air heat exchange unit through the second liquid distribution holes; wherein the number of the second liquid distribution holes is larger than that of the first liquid distribution holes.
The solution heat recovery unit applying the technical scheme of the invention comprises: the device comprises a tower body, an airflow isolation layer, a solution circulation unit, a return air heat exchange unit and a fresh air heat exchange unit; the airflow isolation layer is arranged in the tower body to divide the inner space of the tower body into a first heat exchange area positioned at the top and a second heat exchange area positioned at the bottom; the solution circulation unit is used for conveying the heat exchange solution at the bottom of the tower body to the top of the tower body and spraying the heat exchange solution from top to bottom along the height direction of the tower body so that the heat exchange solution returns to the bottom of the tower body after sequentially passing through the first heat exchange area and the second heat exchange area; the return air heat exchange unit is arranged in the first heat exchange area and is used for enabling indoor return air entering the first heat exchange area to exchange heat with the sprayed heat exchange solution and then to be discharged to the outside; the fresh air heat exchange unit is arranged in the second heat exchange area and is used for enabling outdoor fresh air entering the second heat exchange area to exchange heat with the heat exchange solution subjected to heat exchange in the first heat exchange area and then to be sent to the room. Thereby make new trend and exhaust air and heat transfer solution carry out the heat transfer along the direction of height of tower body against current, effectively improve heat exchange efficiency, solved the solution heat recovery unit heat recovery efficiency among the prior art lower problem.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
FIG. 1 is a schematic diagram of an alternative solution heat recovery unit according to an embodiment of the present invention;
FIG. 2 is a schematic view of a first liquid distribution plate of an alternative solution heat recovery unit according to an embodiment of the present invention; and
Fig. 3 is a schematic structural view of a second liquid distribution plate of an alternative solution heat recovery unit according to an embodiment of the present invention.
Wherein the above figures include the following reference numerals:
10. A tower body; 11. a first heat exchange region; 12. a second heat exchange region; 13. an air return port; 14. an air outlet; 15. a new wind gap; 16. an air supply port; 20. an air flow isolation layer; 21. a first liquid distribution plate; 22. a first liquid distribution hole; 23. a second liquid distribution plate; 24. a second liquid distribution hole; 30. a solution circulation unit; 31. a liquid storage tank; 32. a liquid distributor; 33. an infusion pipeline; 34. a solution pump; 35. a first liquid baffle; 36. a second liquid baffle; 40. a return air heat exchange unit; 41. a first filler block; 50. fresh air heat exchange unit; 51. and a second filler block.
Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
According to the solution heat recovery unit disclosed by the embodiment of the invention, as shown in fig. 1, the solution heat recovery unit comprises a tower body 10, an airflow isolation layer 20, a solution circulation unit 30, a return air heat exchange unit 40 and a fresh air heat exchange unit 50; an air flow isolation layer 20 is provided in the tower body 10 to divide the inner space of the tower body 10 into a first heat exchange region 11 at the top and a second heat exchange region 12 at the bottom; the solution circulation unit 30 is used for conveying the heat exchange solution at the bottom of the tower body 10 to the top of the tower body 10 and spraying the heat exchange solution from top to bottom along the height direction of the tower body 10, so that the heat exchange solution returns to the bottom of the tower body 10 after sequentially passing through the first heat exchange area 11 and the second heat exchange area 12; the return air heat exchange unit 40 is arranged in the first heat exchange area 11, and is used for exchanging heat between indoor return air entering the first heat exchange area 11 and sprayed heat exchange solution and then discharging the heat exchange solution to the outside; the fresh air heat exchange unit 50 is disposed in the second heat exchange area 12, and is configured to exchange heat between the outdoor fresh air entering the second heat exchange area 12 and the heat exchange solution after passing through the first heat exchange area 11, and then send the heat exchange solution to the room.
The solution heat recovery unit applying the technical scheme of the invention comprises a tower body 10, an airflow isolation layer 20, a solution circulation unit 30, a first heat exchange area 11 and a second heat exchange area 12; an air flow isolation layer 20 is provided in the tower body 10 to divide the inner space of the tower body 10 into a first heat exchange region 11 at the top and a second heat exchange region 12 at the bottom; the solution circulation unit 30 is used for conveying the heat exchange solution at the bottom of the tower body 10 to the top of the tower body 10 and spraying the heat exchange solution from top to bottom along the height direction of the tower body 10, so that the heat exchange solution returns to the bottom of the tower body 10 after sequentially passing through the first heat exchange area 11 and the second heat exchange area 12; the return air heat exchange unit 40 is arranged in the first heat exchange area 11, and is used for exchanging heat between indoor return air entering the first heat exchange area 11 and sprayed heat exchange solution and then discharging the heat exchange solution to the outside; the fresh air heat exchange unit 50 is disposed in the second heat exchange area 12, and is configured to exchange heat between the outdoor fresh air entering the second heat exchange area 12 and the heat exchange solution after passing through the first heat exchange area 11, and then send the heat exchange solution to the room. Thereby make new trend and exhaust air and heat transfer solution carry out the heat transfer along the direction of height of tower body 10 against current, effectively improve heat exchange efficiency, solved the solution heat recovery unit heat recovery efficiency among the prior art lower problem.
In specific implementation, the return air heat exchange unit 40 includes a first filler block 41, where the first filler block 41 is disposed in the first heat exchange area 11 and divides the first heat exchange area 11 into a return air area located at a lower portion and a exhaust air area located at an upper portion; the outer wall of the tower body 10 is provided with a return air inlet 13 communicated with the return air area and an air outlet 14 communicated with the air exhaust area, further, the return air inlet 13 is formed in the side wall of the tower body 10, the air outlet 14 is formed in the top wall of the tower body 10, so that indoor return air enters the return air area of the first heat exchange area 11 from the return air inlet 13, then the return air flow turns 90 degrees to carry out mass transfer heat exchange with heat exchange solution sprayed on the upper part through the first filler block 41, and then reaches the air exhaust area on the upper part, and finally the return air is discharged outdoors through the air outlet 14.
Further, the fresh air heat exchange unit 50 includes a second filler block 51, where the second filler block 51 is disposed in the second heat exchange area 12 and divides the second heat exchange area 12 into a fresh air area located at the lower part and a air supply area located at the upper part; the outer wall of the tower body 10 is provided with a fresh air port 15 communicated with the fresh air area and an air supply port 16 communicated with the air supply area, further, the fresh air port 15 and the air supply port 16 are respectively arranged on two opposite side walls of the tower body 10 in a diagonal mode, so that outdoor fresh air enters the fresh air area of the second heat exchange area 12 through the fresh air port 15, then the fresh air flow turns through 90 degrees, and passes through the second filler block 51 to carry out mass transfer heat exchange with heat exchange solution subjected to mass transfer heat exchange in the first heat exchange area 11 again, and then reaches the air supply area on the upper portion, and finally, the fresh air is sent indoors through the air supply port 16.
Further, the solution circulation unit 30 includes a liquid storage tank 31, a liquid distributor 32, a liquid delivery line 33, and a solution pump 34, and the liquid storage tank 31 is disposed at the bottom of the tower body 10, and is used for collecting the heat exchange solution returned through the first heat exchange area 11 and the second heat exchange area 12. The liquid distributor 32 is arranged at the top of the tower body 10, and the liquid distributor 32 is communicated with the liquid storage tank 31 through a liquid delivery pipeline 33; the solution pump 34 is disposed on the infusion line 33, the solution pump 34 is used for pumping the heat exchange solution collected in the liquid storage tank 31 to the liquid distributor 32, a plurality of spray heads are disposed on the liquid distributor 32 at intervals along the horizontal direction, the plurality of spray heads of the liquid distributor 32 spray the heat exchange solution to the first heat exchange area 11 from top to bottom along the height direction of the tower body 10 under the action of the pumping pressure of the solution pump 34, the heat exchange solution firstly performs mass transfer heat exchange with the return air flow entering the first heat exchange area 11, then enters the second heat exchange area 12 through the air flow isolation layer 20 to perform mass transfer heat exchange with the fresh air flow, and finally returns to the liquid storage tank 31 at the bottom of the tower body 10 to form a complete solution cycle.
The liquid distributor 32 is located the air exit 14 department at tower body 10 top, and liquid distributor 32 is in the in-process of spraying the solution, in order to prevent that the solution of spraying from being taken out the tower body 10 by the air current of airing exhaust and causing the loss of heat transfer solution, and further, solution circulation unit 30 still includes first fender liquid board 35, and first fender liquid board 35 sets up in air exit 14 department and is located the top of liquid distributor 32, when liquid distributor 32 sprays the solution, and first fender liquid board 35 can guarantee to airing exhaust the air current and pass through effectively to block heat transfer solution and discharge outdoor along with indoor return air.
In addition, in the mass transfer heat exchange process of the heat exchange solution in the second heat exchange area 12, outdoor fresh air which is easy to enter the second heat exchange area 12 is brought into a room by the air supply opening 16, so that the indoor air quality is affected, further, the solution circulation unit 30 further comprises a second liquid baffle 36, the second liquid baffle 36 is arranged at the air supply opening 16, and the second liquid baffle 36 can ensure the passing of the air supply flow and simultaneously prevent the heat exchange solution which enters the second heat exchange area 12 from being sent into the room along with the outdoor fresh air.
In order to ensure the solution flow from the first heat exchange area 11 to the second heat exchange area 12, the return air flow of the first heat exchange area 11 is blocked from entering the second heat exchange area 12, and the fresh air flow of the second heat exchange area 12 is blocked from entering the first heat exchange area 11. Further, the airflow isolation layer 20 includes a first liquid distribution plate 21 and a second liquid distribution plate 23, where the first liquid distribution plate 21 and the second liquid distribution plate 23 are disposed at intervals along the height direction of the tower 10 in the middle of the tower 10 to divide the tower 10 into a first heat exchange area 11 at the upper part and a second heat exchange area 12 at the lower part, and the second liquid distribution plate 23 is disposed below the first liquid distribution plate 21.
As shown in fig. 2 and 3, the first liquid distribution plate 21 is provided with a plurality of first liquid distribution holes 22, the second liquid distribution plate 23 is provided with a plurality of second liquid distribution holes 24, and the areas of the first liquid distribution plate 21 and the second liquid distribution plate 23 are the same, but the number of the second liquid distribution holes 24 is greater than that of the first liquid distribution holes 22, i.e. the second liquid distribution plate 23 has better solution passing property. In the working process, the heat exchange solution sprayed by the top liquid distributor 32 falls on the first liquid distribution plate 21 after the mass transfer and heat exchange in the first heat exchange area 11, and as the number of the first liquid distribution holes 22 on the first liquid distribution plate 21 is smaller, the speed of the heat exchange solution passing through the first liquid distribution plate 21 is slower, so that a liquid level with a certain height is formed on the upper surface of the first liquid distribution plate 21, thereby blocking the airflow flow between the first heat exchange area 11 and the second heat exchange area 12, the heat exchange solution passing through the first liquid distribution plate 21 falls on the second liquid distribution plate 23, and as the number of the second liquid distribution holes 24 is larger, the heat exchange solution falling on the second liquid distribution plate 23 can quickly enter the second heat exchange area 12 through the second liquid distribution holes 24 and fall on the fresh air heat exchange unit 50 for mass transfer and heat exchange.
The solution heat recovery unit provided by the embodiment of the invention has the advantages that the solution and the air are in countercurrent heat and mass transfer, the machine components are an upper layer and a lower layer, the lower layer is provided with a liquid storage tank, and the solution pump pumps the solution to the upper layer liquid distributor and then sprays the solution on the heat recovery filler at the upper layer to perform total heat recovery with the air. And after the heat recovery solution on the upper layer flows back, the solution is collected and then directly sprayed on the heat recovery filler on the lower layer through a solution tank with a solution collecting and distributing function, heat recovery is carried out with air, and finally the solution flows back to the liquid storage tank on the lower layer, so that a complete solution cycle is completed.
The unit design air and the solution are subjected to countercurrent heat exchange, the unit is integrally divided into an upper layer and a lower layer, the upper layer and the lower layer are respectively used as a fresh air recovery section and an exhaust recovery section, and the fresh air recovery section and the exhaust recovery section are respectively communicated with fresh air and exhaust air. The unit is provided with a liquid storage tank 31, a second filler block 51, an airflow isolation layer 20, a first filler block 41, a liquid distributor 32 and a first liquid baffle 35 from bottom to top, wherein the airflow isolation layer 20 is arranged between the first filler block 41 and the second filler block 51. A reservoir 31 is provided at the bottom of the unit to receive the solution from the second filler block 51. The solution pump is arranged on the infusion pipeline 33 connecting the liquid storage tank 31 and the liquid distributor 32, after the solution is conveyed to the liquid distributor 32 at the upper layer, the solution is sprayed on the first filler block 41 at the upper layer and flows back to the airflow isolation layer 20, the upper layer of the reflux solution is collected by the airflow isolation layer 20 and then redistributed to the second filler block 51 at the lower layer, and the solution flows back to the liquid storage tank 31 at the bottom after passing through the second filler block 51 at the lower layer, so that the solution circulation is completed. Fresh air and return air respectively enter from the side face of the unit, and flow out of the unit from the upper part of the filler after heat and mass transfer with the solution respectively. Fresh air enters the unit from the side surface of the bottom of the lower layer, passes through the second filler block 51 upwards, passes through the upper part of the second filler block 51, and passes through the second liquid baffle 36 from the side surface of the unit to be sent out of the unit. Return air enters the unit from the bottom side of the upper layer, passes upward through the first filler block 41, the liquid distributor 32 and the first liquid baffle 35, and is discharged from the top of the unit.
The solution is conveyed from the liquid storage tank 31 at the bottom of the unit to the liquid distributor 32 at the upper layer of the unit by the solution pump 34, sprayed on the first filler block 41, flows back to the air flow isolation layer 20 in the middle of the unit after heat and mass transfer with air, is distributed by the air flow isolation layer 20, sprayed on the second filler block 51 again, flows back to the liquid storage tank 31 at the bottom of the unit after heat and mass transfer with air, and completes solution circulation.
The airflow isolation layer 20 is composed of a first liquid distribution plate 21 and a second liquid distribution plate 23, a small number of first liquid distribution holes 22 are formed in the first liquid distribution plate 21, liquid distribution resistance of the solution is large, liquid level with a certain height can be formed, liquid sealing effect is formed on air on upper and lower layers, and internal air leakage is prevented. After flowing from the first liquid distribution plate 21 to the second liquid distribution plate 23, the solution is subjected to secondary liquid distribution by the second liquid distribution plate, and is sprayed on the second filler block 51. The airflow isolation layer 20 may also be other forms of structure that can collect and distribute solution.
Compared with a cross flow unit, the heat transfer and mass transfer flow is more optimized, the structure is more compact, the solution filling amount is less, the number of heat recovery solution pumps is reduced to one, and the cost and the power consumption are reduced.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A solution heat recovery unit, comprising:
A tower body (10);
An airflow isolation layer (20) arranged in the tower body (10) to divide the inner space of the tower body (10) into a first heat exchange area (11) positioned at the top and a second heat exchange area (12) positioned at the bottom;
The solution circulation unit (30) is used for conveying the heat exchange solution at the bottom of the tower body (10) to the top of the tower body (10) and spraying the heat exchange solution from top to bottom along the height direction of the tower body (10) so as to enable the heat exchange solution to return to the bottom of the tower body (10) after sequentially passing through the first heat exchange area (11) and the second heat exchange area (12);
The return air heat exchange unit (40) is arranged in the first heat exchange area (11) and is used for enabling indoor return air entering the first heat exchange area (11) to exchange heat with the sprayed heat exchange solution and then to be discharged to the outside;
The fresh air heat exchange unit (50) is arranged in the second heat exchange area (12) and is used for enabling outdoor fresh air entering the second heat exchange area (12) to exchange heat with heat exchange solution passing through the first heat exchange area (11) and then to be sent to the indoor;
The return air heat exchange unit (40) comprises: a first filler block (41) which is arranged in the first heat exchange area (11) and divides the first heat exchange area (11) into a return air area positioned at the lower part and a discharge air area positioned at the upper part; the outer wall of the tower body (10) is provided with an air return opening (13) communicated with the air return area and an air outlet (14) communicated with the air exhaust area, so that indoor air return enters the first heat exchange area (11) from the air return opening (13) and is discharged to the outside from the air outlet (14) after heat exchange is performed through the first filler block (41);
The fresh air heat exchange unit (50) comprises: the second filler block (51) is arranged in the second heat exchange area (12) and divides the second heat exchange area (12) into a fresh air area positioned at the lower part and a air supply area positioned at the upper part; the outer wall of the tower body (10) is provided with a fresh air port (15) communicated with the fresh air area and an air supply port (16) communicated with the air supply area, so that outdoor fresh air enters the second heat exchange area (12) through the fresh air port (15) and is sent to the room through the air supply port (16) after heat exchange is carried out through the second filler block (51);
The airflow isolation layer (20) comprises: the first liquid distribution plate (21) is arranged in the tower body (10); the first liquid distribution plate (21) is provided with a plurality of first liquid distribution holes (22) so that heat exchange solution passing through the first heat exchange area (11) can enter the second heat exchange area (12) through the first liquid distribution holes (22) and indoor return air is prevented from entering the second heat exchange area (12) from the first heat exchange area (11) and outdoor fresh air is prevented from entering the first heat exchange area (11) from the second heat exchange area (12);
The airflow isolation layer (20) further comprises: the second liquid distribution plates (23) are arranged below the first liquid distribution plates (21) at intervals; the second liquid distribution plate (23) is provided with a plurality of second liquid distribution holes (24) so that the heat exchange solution passing through the first liquid distribution holes (22) is sprayed on the fresh air heat exchange unit (50) through the second liquid distribution holes (24); wherein the number of the second liquid distribution holes (24) is larger than the number of the first liquid distribution holes (22).
2. Solution heat recovery unit according to claim 1, characterized in that the return air inlet (13) is provided on the side wall of the tower (10) and the air outlet (14) is provided on the top wall of the tower (10).
3. Solution heat recovery unit according to claim 1, characterized in that the fresh air port (15) and the air supply port (16) are respectively provided on two opposite side walls of the tower body (10).
4. The solution heat recovery unit according to claim 1, characterized in that the solution circulation unit (30) comprises:
And the liquid storage tank (31) is arranged at the bottom of the tower body (10) and is used for collecting heat exchange solution returned through the first heat exchange area (11) and the second heat exchange area (12).
5. The solution heat recovery unit according to claim 4, wherein the solution circulation unit (30) further comprises:
The liquid distributor (32) is arranged at the top of the tower body (10);
the liquid distributor (32) is communicated with the liquid storage tank (31) through the liquid delivery pipeline (33);
The liquid distributor (32) is used for spraying the heat exchange solution to the first heat exchange area (11) and the second heat exchange area (12) from top to bottom along the height direction of the tower body (10).
6. The solution heat recovery unit according to claim 5, wherein the liquid distributor (32) includes a plurality of spray heads, the plurality of spray heads being arranged at intervals in a horizontal direction.
7. The solution heat recovery unit according to claim 5, wherein an air return opening (13) and an air outlet (14) are formed in the outer wall of the tower body (10), so that indoor return air enters the first heat exchange area (11) from the air return opening (13) and is discharged outdoors from the air outlet (14);
Wherein the solution circulation unit (30) further comprises:
The first liquid baffle (35) is arranged at the air outlet (14) and is positioned above the liquid distributor (32), and the first liquid baffle (35) is used for blocking heat exchange solution sprayed by the liquid distributor (32) from being discharged to the outside along with indoor return air.
8. The solution heat recovery unit according to claim 5, wherein a fresh air port (15) and an air supply port (16) are formed in the outer wall of the tower body (10), and outdoor fresh air enters the second heat exchange area (12) through the fresh air port (15) and is supplied indoors through the air supply port (16);
Wherein the solution circulation unit (30) further comprises:
The second liquid baffle plate (36) is arranged at the air supply opening (16), and the second liquid baffle plate (36) is used for preventing heat exchange solution entering the second heat exchange area (12) from being sent indoors along with outdoor fresh air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN102538087A (en) * | 2012-02-09 | 2012-07-04 | 北京华创瑞风空调科技有限公司 | Solution humidifying all-air unit with total-heat recovering device and solution humidifying method |
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| CN107062941A (en) * | 2017-03-02 | 2017-08-18 | 袁军 | A kind of heat and mass method and its system using liquid as media |
| CN208205346U (en) * | 2018-04-18 | 2018-12-07 | 北京华创瑞风空调科技有限公司 | Solution recuperation of heat unit |
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| KR20110119499A (en) * | 2010-04-26 | 2011-11-02 | 전성배 | Heat pump type ventilating device using waste heat recovery |
| CN202382354U (en) * | 2011-11-09 | 2012-08-15 | 威海中天嘉能空调科技有限公司 | Fresh air exchanger for performing total heat recovery based on solution |
| CN102538087A (en) * | 2012-02-09 | 2012-07-04 | 北京华创瑞风空调科技有限公司 | Solution humidifying all-air unit with total-heat recovering device and solution humidifying method |
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