CN104566690A - Split-range type condensation indirect reheating type double-cold-source fresh air unit - Google Patents
Split-range type condensation indirect reheating type double-cold-source fresh air unit Download PDFInfo
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- CN104566690A CN104566690A CN201310479721.0A CN201310479721A CN104566690A CN 104566690 A CN104566690 A CN 104566690A CN 201310479721 A CN201310479721 A CN 201310479721A CN 104566690 A CN104566690 A CN 104566690A
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- water
- triple valve
- surface cooler
- cooling
- cold
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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
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Air Conditioning Control Device (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention discloses a split-range type condensation indirect reheating type double-cold source fresh air unit which comprises a fresh air unit shell with an air inlet and an air outlet, wherein a front-step surface cooling dehumidification system, a middle direct expansion dehumidification system, a rear-step surface cooling temperature adjusting system, a water inlet pipe and a water outlet pipe are arranged in the fresh air unit shell, ; the front-step surface cooling dehumidification system comprises a dehumidification surface cooler and a first water path three-way valve; the middle direct expansion dehumidification system is a single cooling system and comprises an evaporator, a water cooling condenser and a second water path three-way valve; the rear-step surface cooling temperature adjusting system comprises a temperature adjusting surface cooler and a third water path three-way valve. Discharged air is indirectly reheated through the condensation heat of the middle direct expansion dehumidification system, so that stepless adjustment on the discharged air temperature is achieved. The middle direct expansion dehumidification system is the single cooling system, and reheating condensers and a plurality of refrigeration valves are eliminated, so that the system is simplified, and moreover as cooling water of the water cooling condenser is just the low-temperature effluent of the dehumidification surface cooler, the cooling effect is good, the refrigeration efficiency is high, and a cooling tower is also eliminated.
Description
Technical field
The present invention relates to a kind of two low-temperature receiver Fresh air handling units, particularly relate to the two low-temperature receiver Fresh air handling units of the indirect pattern of fever again of a kind of point formula condensation.
Background technology
Two low-temperature receiver Fresh air handling units have employed the low-temperature receiver of high and low two kinds of different evaporating temperatures, and high temperature low-temperature receiver adopts 15-20 DEG C of chilled water or natural cooling source, and low temperature cold source is provided by straight swollen dehumidification system.Hot and humid new wind becomes the air of low temperature and low humidity after the dehumidifying of the twin-stage low-temperature receiver degree of depth, carries out step-less adjustment for realizing leaving air temp between 16-22 DEG C, and air-out needs to heat, and it is controlled continuously to add thermal requirement.
Existing pair of low-temperature receiver Fresh air handling units, air-out reheating is rely on the condensation heat of straight swollen dehumidification system directly to heat to realize mostly.Straight swollen dehumidification system has major and minor two condensers, main condenser discharge condensation heat, and secondary condenser recovery section condensation heat is used for heating the air of low temperature and low humidity after refrigerated dehumidification.
Major and minor condenser has series and parallel connections two kinds of connected modes.Major and minor condenser is by being connected in series, and rely on two on-off type magnetic valves to carry out change working, a large amount of the results shows, this kind of connected mode, air-out again heat can not obtain continuous control, cannot realize the step-less adjustment of leaving air temp.Major and minor condenser is by being connected in parallel, ratio adjusting valve is relied on to control to enter the refrigerant flow of secondary condenser, thus continuous control heat again, though can realize the step-less adjustment of leaving air temp, but a large amount of practical applications finds, threeway ratio adjusting valve is difficult to realize closing completely, there is coolant leakage, cause adjustment differential comparatively large, precision is not high, and stability is bad.And refrigeration system is with reheater condenser and multiple refrigeration valve member again, and the system refrigerant pipeline of making is comparatively complicated.
Summary of the invention
The object of the invention is the deficiency existed for prior art, provide that a kind of pipeline is comparatively simple, leaving air temp degree of regulation is high, point formula condensation of good stability pattern of fever pair low-temperature receiver Fresh air handling units more indirectly.
For achieving the above object, the technical solution used in the present invention is the two low-temperature receiver Fresh air handling units of the indirect pattern of fever again of a kind of point formula condensation, comprise the Fresh air handling units housing with air inlet and air outlet, in this housing, be provided with the cold dehumidification system of prime table, the swollen dehumidification system of middle straight, the cold thermoregulating system of rear class table, water inlet pipe and outlet pipe, the cold dehumidification system of described prime table comprises dehumidifying surface cooler and the first water route triple valve, described straight swollen dehumidification system is single cooling system, comprises evaporimeter, water-cooled condenser and the second water route triple valve, the cold thermoregulating system of described rear class table comprises temperature adjustment surface cooler and the 3rd water route triple valve, described water inlet pipe connects the water inlet end of the first water route triple valve, this triple valve first water side, the first water route connects the water inlet end of dehumidifying surface cooler, second water side with dehumidifying surface cooler water side be connected converge after be connected with the water inlet end of the second water route triple valve, second water side of this second water route triple valve connects return pipe, first water side connects the water inlet end of water-cooled condenser, this water-cooled condenser is connected with evaporimeter, and the water side of this water-cooled your device cold is also connected with the water inlet end of the 3rd water route triple valve, first water side of the 3rd water route triple valve connects the water inlet end of temperature adjustment surface cooler, second water side be connected with the water side of temperature adjustment surface cooler converge after be connected with return pipe.
As preferably, in housing, be also provided with blower fan, and described dehumidifying surface cooler, evaporimeter, temperature adjustment surface cooler and blower fan are arranged in order to air outlet from housing air inlet.
The mode that the present invention adopts two dehumidifying surface cooler of the cold dehumidification system of low-temperature receiver prime table and the temperature adjustment surface cooler of the cold thermoregulating system of rear class table to be connected in series, the air of the low temperature and high relative humidity of the heat heating utilizing prime high temperature low-temperature receiver to absorb from new wind after two low-temperature receiver degree of depth dehumidifying, passing ratio three-way control valve controls rear class discharge and realizes the step-less adjustment of leaving air temp between 16-20 DEG C.The mode that this dehumidifying surface cooler and temperature adjustment surface cooler are connected in series makes machine set system flow process be optimized, and internal structure is more succinct, control is simple and leaving air temp control accuracy is high, and the stability of a system is good.
Beneficial effect: the present invention compared with prior art, has following beneficial effect:
(1) utilize the condensation heat of straight swollen dehumidification system to carry out indirect reheating to air-out, realize the step-less adjustment of leaving air temp.
(2) straight swollen dehumidification system is single cooling system, and eliminate reheater condenser and multiple refrigeration valve member, system is simplified again, and the cooling water of water-cooled condenser comes from the low temperature water outlet of dehumidifying surface cooler, good cooling results, and refrigerating efficiency is high, also eliminates cooling tower;
(3) compared with control refrigerant flow, the control accuracy that control discharge carrys out regulating outlet air temperature wants high, and stability will be got well;
(4) by water system flow process hierarchical arrangement, realize applying the segmented of low-temperature receiver, improve low-temperature receiver comprehensive energy efficiency.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, illustrate the present invention further, the present embodiment is implemented under premised on technical solution of the present invention, should understand these embodiments and only be not used in for illustration of the present invention and limit the scope of the invention.
As shown in Figure 1, the two low-temperature receiver Fresh air handling units of the indirect pattern of fever again of a kind of point formula condensation, comprise the Fresh air handling units housing with air inlet and air outlet, in this housing, be provided with the cold dehumidification system of prime table, the swollen dehumidification system of middle straight, the cold thermoregulating system of rear class table, water inlet pipe 1 and outlet pipe 2, the cold dehumidification system of described prime table comprises dehumidifying surface cooler 3 and the first water route triple valve 4, described straight swollen dehumidification system is single cooling system, comprises evaporimeter 5, water-cooled condenser 6 and the second water route triple valve 7, the cold thermoregulating system of described rear class table comprises temperature adjustment surface cooler 8 and the 3rd water route triple valve 9, described water inlet pipe 1 connects the water inlet end of the first water route triple valve 4, this the first water route triple valve 4 first water side connects the water inlet end of dehumidifying surface cooler 3, second water side with dehumidifying surface cooler 3 water side be connected converge after be connected with the water inlet end of the second water route triple valve 7, second water side of this second water route triple valve 7 connects return pipe 2, first water side connects the water inlet end of water-cooled condenser 6, this water-cooled condenser 6 is connected with evaporimeter 5, and the water side of this water-cooled your device 6 cold is also connected with the water inlet end of the 3rd water route triple valve 9, first water side of the 3rd water route triple valve 9 connects the water inlet end of temperature adjustment surface cooler 8, second water side be connected with the water side of temperature adjustment surface cooler 8 converge after be connected with return pipe 2.
As preferably, in housing, be also provided with blower fan 10, and described dehumidifying surface cooler 3, evaporimeter 5, temperature adjustment surface cooler 8 and blower fan 10 are arranged in order to air outlet from housing air inlet.
Time of the present invention, dehumidifying surface cooler, water-cooled condenser and described temperature adjustment surface cooler adopt point formula to arrange, are sequentially connected in series.Cold water is provided by feed pipe, feed pipe is two branch roads by the first water route triple valve, first branch road connects the water inlet end of dehumidifying surface cooler, second branch road is connected with the entrance point of the second water route triple valve after collecting with the water side of dehumidifying surface cooler, second water route triple valve has two ports of export, first port of export is connected with the water inlet end of water-cooled condenser 6, second port of export is connected with return pipe, the water side of water-cooled condenser is connected with the entrance point of the 3rd water route triple valve, 3rd water route triple valve has two ports of export, first port of export is connected with the water inlet end of temperature adjustment surface cooler, second port of export is connected with return pipe, the water side of described temperature adjustment surface cooler is connected with return pipe,
Air-out water capacity is regulated by the first water route triple valve, when air-out water capacity is greater than setting water capacity, preferential adjustment first water route triple valve, the aperture of continuous increase by first water route triple valve first port of export, when first openend aperture reaches maximum, if air-supply water capacity is still greater than setting water capacity, now start straight swollen dehumidification system, the aperture of the first water route triple valve first openend reduces to minimum simultaneously, if air-supply water capacity is still greater than setting water capacity, at this moment the aperture of the first water route triple valve first openend constantly increases, until air-supply water capacity equals to set water capacity, when water capacity of blowing is less than setting water capacity, now preferentially reduce the aperture of first water route triple valve first port of export, when the aperture of first water route triple valve first port of export reduces to minimum, and water capacity of blowing still be less than setting water capacity time, now straight swollen dehumidification system is out of service, first water route triple valve first openend is reached maximum simultaneously, if water capacity of now blowing still is less than setting water capacity, keep the aperture of reduction first openend, until air-supply water capacity equals to set water capacity.
Leaving air temp is regulated by the second water route triple valve, when leaving air temp is greater than design temperature, constantly reduces the aperture of second water route triple valve first port of export, until reach setting value; When leaving air temp is less than design temperature, constantly increase the aperture of first port of export, until reach setting value.
The control of straight swollen dehumidification system condensing pressure is regulated by the 3rd water route triple valve, when pressure is higher, constantly increases the aperture of the 3rd water route triple valve first port of export, until pressure reaches normal range (NR); When pressure is on the low side, constantly reduce the aperture of the 3rd water route triple valve first port of export, until pressure reaches normal range (NR).
Claims (2)
1. one kind of point of two low-temperature receiver Fresh air handling units of the indirect pattern of fever again of formula condensation, comprise the Fresh air handling units housing with air inlet and air outlet, it is characterized in that: in this housing, be provided with the cold dehumidification system of prime table, the swollen dehumidification system of middle straight, the cold thermoregulating system of rear class table, water inlet pipe (1) and outlet pipe (2), the cold dehumidification system of described prime table comprises dehumidifying surface cooler (3) and the first water route triple valve (4), described straight swollen dehumidification system is single cooling system, comprises evaporimeter (5), water-cooled condenser (6) and the second water route triple valve (7), the cold thermoregulating system of described rear class table comprises temperature adjustment surface cooler (8) and the 3rd water route triple valve (9), described water inlet pipe (1) connects the water inlet end of the first water route triple valve (4), this the first water route triple valve (4) first water side connects the water inlet end of dehumidifying surface cooler (3), second water side with dehumidifying surface cooler (3) water side be connected converge after be connected with the water inlet end of the second water route triple valve (7), second water side in this second water route triple valve (7) connects return pipe (2), first water side connects the water inlet end of water-cooled condenser (6), this water-cooled condenser (6) is connected with evaporimeter (5), and the water side of this water-cooled your device (6) cold is also connected with the water inlet end of the 3rd water route triple valve (9), first water side of the 3rd water route triple valve (9) connects the water inlet end of temperature adjustment surface cooler (8), second water side is connected with the water side of temperature adjustment surface cooler (8) to converge and is connected with return pipe (2) afterwards.
2. one according to claim 1 divides the indirect pattern of fever again of formula condensation two low-temperature receiver Fresh air handling units, it is characterized in that: in housing, be also provided with blower fan (10), and described dehumidifying surface cooler (3), evaporimeter (5), temperature adjustment surface cooler (8) and blower fan (10) are arranged in order from housing air inlet to air outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310479721.0A CN104566690A (en) | 2013-10-14 | 2013-10-14 | Split-range type condensation indirect reheating type double-cold-source fresh air unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310479721.0A CN104566690A (en) | 2013-10-14 | 2013-10-14 | Split-range type condensation indirect reheating type double-cold-source fresh air unit |
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| CN104566690A true CN104566690A (en) | 2015-04-29 |
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| CN201310479721.0A Pending CN104566690A (en) | 2013-10-14 | 2013-10-14 | Split-range type condensation indirect reheating type double-cold-source fresh air unit |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107036194A (en) * | 2017-05-27 | 2017-08-11 | 山东美诺邦马节能科技有限公司 | The double low-temperature receiver dehumidifying fresh-air ventilation units of high-temperature water cooling |
| CN107747775A (en) * | 2017-09-27 | 2018-03-02 | 上海朗绿建筑科技股份有限公司 | A kind of new new blower fan of double low-temperature receivers and air-conditioning system |
| CN110701691A (en) * | 2019-10-14 | 2020-01-17 | 珠海格力电器股份有限公司 | Fresh air handling unit and control method |
| CN110986208A (en) * | 2019-12-11 | 2020-04-10 | 泰豪科技股份有限公司 | Fresh air temperature-adjusting dehumidifier with air pretreatment device |
| CN111397009A (en) * | 2020-03-27 | 2020-07-10 | 北京金茂绿建科技有限公司 | Energy-saving air-out temperature adjustable dehumidification system |
| CN112524718A (en) * | 2020-12-01 | 2021-03-19 | 西安西热控制技术有限公司 | Automatic cooling system for thermal power plant and cooling method thereof |
| CN114263990A (en) * | 2021-12-03 | 2022-04-01 | 雅凯热能技术(江苏)有限公司 | Take domestic central air conditioning system of new trend dehumidification function |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107036194A (en) * | 2017-05-27 | 2017-08-11 | 山东美诺邦马节能科技有限公司 | The double low-temperature receiver dehumidifying fresh-air ventilation units of high-temperature water cooling |
| CN107747775A (en) * | 2017-09-27 | 2018-03-02 | 上海朗绿建筑科技股份有限公司 | A kind of new new blower fan of double low-temperature receivers and air-conditioning system |
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| CN110986208A (en) * | 2019-12-11 | 2020-04-10 | 泰豪科技股份有限公司 | Fresh air temperature-adjusting dehumidifier with air pretreatment device |
| CN111397009A (en) * | 2020-03-27 | 2020-07-10 | 北京金茂绿建科技有限公司 | Energy-saving air-out temperature adjustable dehumidification system |
| CN112524718A (en) * | 2020-12-01 | 2021-03-19 | 西安西热控制技术有限公司 | Automatic cooling system for thermal power plant and cooling method thereof |
| CN114263990A (en) * | 2021-12-03 | 2022-04-01 | 雅凯热能技术(江苏)有限公司 | Take domestic central air conditioning system of new trend dehumidification function |
| CN114263990B (en) * | 2021-12-03 | 2024-01-30 | 雅凯热能技术(江苏)有限公司 | Domestic central air conditioning system with fresh air dehumidification function |
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Application publication date: 20150429 |