CN212746854U - Air conditioning system combining natural cold source, dry air energy and mechanical refrigeration - Google Patents
Air conditioning system combining natural cold source, dry air energy and mechanical refrigeration Download PDFInfo
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- CN212746854U CN212746854U CN201922187170.6U CN201922187170U CN212746854U CN 212746854 U CN212746854 U CN 212746854U CN 201922187170 U CN201922187170 U CN 201922187170U CN 212746854 U CN212746854 U CN 212746854U
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Abstract
The utility model discloses an utilize natural cold source, dry air can and mechanical refrigeration compound air conditioning system, through survey outdoor air, the dry wet bulb temperature of unit import and unit air supply, judge the operational mode of unit, and realize the operation of corresponding mode through start-stop electric air valve, a compressor, drench water pump, exhaust fan, forced draught blower, according to the dry wet bulb temperature of outdoor air, the dry wet bulb temperature of air supply and the dry wet bulb temperature of return air that three probe surveyed, the operational mode of control unit, can select the most energy-conserving operational mode according to the change of outdoor weather, thereby reach the purpose that the unit practiced thrift the energy consumption; under different operation modes of the unit, the resistance of the evaporator and the condenser is reduced as much as possible by controlling the opening of different electric control air valves, so that the energy consumption of the fan is reduced; and a supplementary air inlet is arranged at the upper side of the air inlet, an electric control air valve b is arranged, the opening of the electric control air valve b is controlled, and the air quantity required by the condenser is supplemented.
Description
Technical Field
The utility model belongs to the technical field of the air conditioner, a utilize natural cold source, dry air can and mechanical refrigeration compound air conditioning system is related to.
Background
Under the influence of energy-saving policies, evaporative cooling air conditioning technology is more and more emphasized in China, and at present, evaporative cooling air conditioning units are widely applied to northwest dry areas of China, but are not widely applied to other areas with medium humidity and high humidity of China, the main reason is that the evaporative cooling air conditioning technology is not suitable for being adopted in the high-temperature and high-humidity periods of the areas, but a time period suitable for adopting the evaporative cooling technology exists in part of the time period, and the time period is not utilized, for example, a data machine room which needs cooling all the year round. Therefore, the control method of the indirect evaporative cooling and mechanical refrigeration combined air conditioning unit is provided, is suitable for the time period of adopting the evaporative cooling technology, and does not utilize mechanical refrigeration any more, so that the aim of saving energy is fulfilled.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an utilize natural cold source, dry air can and mechanical refrigeration compound air conditioning system, can select evaporative cooling, mechanical refrigeration's start-stop according to outdoor climate change, and reach the purpose of practicing thrift the energy consumption.
The utility model discloses the technical scheme who adopts as follows:
a utilizes the natural cold source, dry air energy and mechanical refrigeration to compound the air conditioning system, through determining the outdoor air, unit import and unit air supply dry wet bulb temperature, judge the operation mode of the unit, and realize the operation of the corresponding mode through the electronic blast gate of start-stop, compressor, drench the water pump, exhaust fan, forced draught blower; wherein the content of the first and second substances,
the air conditioning unit comprises an indirect evaporative cooler, an evaporator, a condenser, a compressor, a throttle valve, an exhaust fan and a blower;
the indirect evaporative cooler comprises a water distributor, a water spraying pump and an indirect evaporative cooling core body;
the evaporator is arranged in the air outlet direction of the primary air of the indirect evaporative cooler, and the condenser is arranged in the air outlet direction of the secondary air of the indirect evaporative cooler;
four groups of bypass air ports are arranged on the upper side, the lower side, the left side, the right side and the side of the evaporator, and two groups of bypass air ports are also arranged on the upper side and the lower side of the condenser; a first electric control air valve is arranged between the third group of bypass air openings and the fourth group of bypass air openings arranged at the two sides of the evaporator and at the upper side of the evaporator; a second electric control air valve is arranged between the first group of bypass air openings and the second group of bypass air openings arranged at the two sides of the evaporator and at the lower side of the evaporator; a third electric control air valve is arranged between the first group of bypass air openings and the second group of bypass air openings arranged on the upper side and the lower side of the condenser and on the upper side of the evaporator; a fourth group of electric control air valves are arranged between the condenser and the indirect evaporative cooler and above the air inlet;
a first probe is arranged at an air supply outlet of the unit, a second probe is arranged outside the unit, and a third probe is arranged at an air inlet.
The beneficial effects of the utility model reside in that:
(1) the utility model discloses an utilize natural cold source, dry air can and mechanical refrigeration composite air conditioning system, according to outdoor air wet-dry bulb temperature, air supply wet-dry bulb temperature and return air wet-dry bulb temperature that three probe surveyed, control the running mode of unit, can select the most energy-conserving running mode according to the change of outdoor weather to reach the purpose that the unit economized on energy consumption;
(2) under different operation modes of the unit, the resistance of the evaporator and the condenser is reduced as much as possible by controlling the opening of different electric control air valves, so that the energy consumption of the fan is reduced;
(3) and a supplementary air inlet is arranged at the upper side of the air inlet, an electric control air valve b is arranged, the opening of the electric control air valve b is controlled, and the air quantity required by the condenser is supplemented.
Drawings
Fig. 1 is a schematic structural diagram of an air conditioning unit of the composite air conditioning system using natural cold source, dry air energy and mechanical refrigeration according to the present invention;
fig. 2 is a control point layout diagram of an air conditioning unit of the composite air conditioning system utilizing natural cold source, dry air energy and mechanical refrigeration of the utility model;
fig. 3 is the air flow chart of the air conditioning unit operation mode 4 and operation mode 1 of the composite air conditioning system using natural cold source, dry air energy and mechanical refrigeration of the present invention.
Fig. 4 is the air flow chart of the air conditioning unit operation mode 2 and operation mode 3 of the composite air conditioning system using natural cold source, dry air energy and mechanical refrigeration of the present invention.
In the figure, 1, an exhaust outlet, 2, an exhaust fan, 3, a first bypass vent hole a, 4, a first electronic control air valve, 5, a second electronic control air valve, 6, a supplementary air inlet, 7, an air inlet, 8, a second bypass air hole b, 9, a water spraying pump, 10, a water tank, 11, a secondary air inlet, 12, a third bypass air hole c, 13, a third electronic control air valve, 14, a fourth bypass vent hole d, 15, a compressor, 16, an evaporator, 17, a water distributor, 18, an air outlet, 19, a blower, 20, a fifth bypass air hole e, 21, a fourth electronic control air valve, 22, a condenser, 23, a throttle valve, 24, a sixth bypass f, 25, a controller, 26, an indirect evaporative cooling core, 27, a first probe, 28, a second probe, 29 and a third probe are arranged.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model discloses indirect evaporative cooling and mechanical refrigeration compound air conditioning unit, as shown in fig. 1-4, including indirect evaporative cooler, evaporimeter 16, condenser 22, compressor 15, choke valve 23, exhaust fan 2, forced draught blower 19 etc..
The indirect evaporative cooler comprises a water distributor 17, a water spraying pump 9, an indirect evaporative cooling core 26 and a water tank 10.
The evaporator 16 is disposed in the outlet direction of the primary air of the indirect evaporative cooler, and the condenser 22 is disposed in the outlet direction of the secondary air of the indirect evaporative cooler.
The evaporator 16 is provided with a bypass tuyere c12, a bypass tuyere d14, a bypass tuyere e20 and a bypass tuyere f24 at upper, lower, left and right sides thereof, and the condenser 22 is provided with a bypass tuyere a3 and a bypass tuyere b8 at upper, lower, left and right sides thereof. A fourth electric control air valve 21 is arranged between the bypass air opening e20 and the bypass air opening f24 and on the upper side of the evaporator 16; a third electric control air valve 13 is arranged between the bypass air opening c12 and the bypass air opening d14 and at the lower side of the evaporator 16; a first electric control air valve 4 is arranged between the bypass air inlet a3 and the bypass air inlet b8 on the right side of the condenser;
the second probe 28 is arranged at the unit air supply outlet 18, the first probe 27 is arranged outside the unit, and the third probe 29 is arranged at the air inlet.
And a supplementary air inlet 6 is arranged at the upper side of the air inlet 7, and a second electric control air valve 5 is arranged.
The utility model discloses a control method process for indirect evaporative cooling and mechanical refrigeration compound air conditioning unit as follows:
air outlet temperature of the indirect evaporative cooler:
t1，out＝t1，in-ηIEC(to-to，s) (1)
air-out temperature when indirect evaporative cooler is as air heat exchanger:
t1，out＝t1，in-ηt(to，out-to) (2)
the unit is provided with three air temperature and humidity probes, wherein a first probe 27 is arranged outside the unit to test the temperature of outdoor air dry and wet balls, a second probe 28 is arranged at the air supply outlet 18 to test the temperature of air supply dry and wet balls, and a third probe 29 is arranged at the air inlet 7 to test the temperature of return air dry and wet balls.
The outdoor dry bulb temperature t is measured by the first probe 27oOutdoor wet bulb temperature to，sThe third probe 29 measures the temperature t of the return air dry bulb1，inT is calculated by the controller 25 program according to equation (1)1，out. Setting a design temperature range T (e.g. 18-27 deg.C) according to user in program, calculating T1，outAnd T and T1，inA comparison is made.
If t is1，out≥t1，inThe operation mode 4 starts: the controller 25 closes the first electric control air valve 4, the third electric control air valve 13 and the fourth electric control air valve 21; opening the second electric control air valve 5; start rowA fan 2, a blower 19, and a compressor 15; the water drench pump 9 is turned off. Under the working condition, the temperature of the outdoor air wet bulb is higher than that of the indoor return air, and the indirect evaporative cooler is started to heat the treated air only and cannot cool the treated air, so that only mechanical refrigeration is started, and the running mode 4 is adopted.
If T ismax≤t1，out＜t1，inThe operation mode 1 starts: the controller 25 closes the first electric control air valve 4, the third electric control air valve 13 and the fourth electric control air valve 21; opening the second electric control air valve 5; the exhaust fan 2, the water spray pump 9, the blower 19, and the compressor 15 are started. Under the working condition, the single mechanical refrigeration can reach the required working condition, but the electric energy is wasted, and in order to save energy consumption, the working condition is suitable for the simultaneous opening of the mechanical refrigeration and the indirect evaporative cooler, so that the starting mode 1 is realized.
If T ismin＜t1，out＜TmaxAnd is and
the operation mode 2 starts: opening a first electric control air valve 4, a third electric control air valve 13 and a fourth electric control air valve 21; closing the second electric control air valve 5; starting the exhaust fan 2, the water spraying pump 9 and the blower 19; the compressor 15 is turned off. In the working condition, in order to save energy consumption, mechanical refrigeration is not needed for cooling, and the air supply requirement can be met only by opening the indirect evaporative cooler, namely the running mode 2.
If it is not
The operation mode 3 starts: the controller 25 opens the first electric control air valve 4, the third electric control air valve 13 and the fourth electric control air valve 21; closing the second electric control air valve 5; starting the exhaust fan 2 and the blower 19; the compressor 15 and the water spraying pump 9 are closed. Under the working condition, the temperature of outdoor air is further reduced, the air supply requirement can be met only by cooling the processed air through the outdoor air, and the operation mode is 3.
Through the control method, the utility model discloses a be used for indirect evaporative cooling and mechanical refrigeration compound air conditioning unit adjusts the operational mode of unit according to outdoor climate change, realizes furthest saving unit operation energy consumption.
Claims (6)
1. A utilizes the natural cold source, dry air energy and mechanical refrigeration to compound the air conditioning system, through determining the outdoor air, unit import and unit air supply dry wet bulb temperature, judge the operation mode of the unit, and realize the operation of the corresponding mode through the electronic blast gate of start-stop, compressor, drench the water pump, exhaust fan, forced draught blower; wherein the method is characterized in that the raw materials are mixed,
the air conditioning unit comprises an indirect evaporative cooler, an evaporator, a condenser, a compressor, a throttle valve, an exhaust fan and a blower;
the indirect evaporative cooler comprises a water distributor, a water spraying pump and an indirect evaporative cooling core body;
the evaporator is arranged in the air outlet direction of the primary air of the indirect evaporative cooler, and the condenser is arranged in the air outlet direction of the secondary air of the indirect evaporative cooler;
four groups of bypass air ports are arranged on the upper side, the lower side, the left side, the right side and the side of the evaporator, and two groups of bypass air ports are also arranged on the upper side and the lower side of the condenser; a first electric control air valve is arranged between the third group of bypass air openings and the fourth group of bypass air openings arranged at the two sides of the evaporator and at the upper side of the evaporator; a second electric control air valve is arranged between the first group of bypass air openings and the second group of bypass air openings arranged at the two sides of the evaporator and at the lower side of the evaporator; a third electric control air valve is arranged between the first group of bypass air openings and the second group of bypass air openings arranged on the upper side and the lower side of the condenser and on the upper side of the evaporator; a fourth group of electric control air valves are arranged between the condenser and the indirect evaporative cooler and above the air inlet;
a first probe is arranged at an air supply outlet of the unit, a second probe is arranged outside the unit, and a third probe is arranged at an air inlet.
2. The air conditioning system combining natural cooling source, dry air energy and mechanical refrigeration as claimed in claim 1, wherein the outdoor dry bulb temperature t is measured by the first probe (27)oOutdoor wet bulb temperature to，sThe third probe (29) measures the temperature t of the return air dry bulb1，inIs controlled byThe program of the controller (25) calculates t1，outIn the program, a temperature range T is set according to the user, and T is calculated1，outAnd T and T1，inAnd comparing, and judging and selecting the operation mode of the unit.
3. The air conditioning system combining natural cooling source, dry air energy and mechanical refrigeration as claimed in claim 1, wherein if t is1，out≥t1，inThe operation mode 4 starts: the controller (25) closes the first electric control air valve (4), the third electric control air valve (13) and the fourth electric control air valve (21); opening a second electric control air valve (5); starting the exhaust fan (2), the blower (19) and the compressor (15); the water drenching pump (9) is closed.
4. The air conditioning system combining natural cooling source, dry air energy and mechanical refrigeration as claimed in claim 1, wherein if T is greater than Tmax≤t1，out＜t1，inThe operation mode 1 starts: the controller (25) closes the first electric control air valve (4), the third electric control air valve (13) and the fourth electric control air valve (21); opening a second electric control air valve (5); starting the exhaust fan (2), the water spraying pump (9), the blower (19) and the compressor (15).
5. The air conditioning system combining natural cooling source, dry air energy and mechanical refrigeration as claimed in claim 1, wherein if T is greater than Tmin＜t1，out＜TmaxAnd t iso≥to，
The operation mode 2 starts: the controller (25) opens the first electric control air valve (4), the third electric control air valve (13) and the fourth electric control air valve (21); closing the second electric control air valve (5); starting the exhaust fan (2), the water spraying pump (9) and the blower (19); the compressor (15) is turned off.
6. The air conditioner as claimed in claim 1, wherein the air conditioner utilizes natural cold source, dry air energy and mechanical refrigerationModulation system, characterized in that if t iso＜to，
The operation mode 3 starts: the controller (25) opens the first electric control air valve (4), the third electric control air valve (13) and the fourth electric control air valve (21); closing the second electric control air valve (5); starting the exhaust fan (2) and the blower (19); and closing the compressor (15) and the water spraying pump (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922187170.6U CN212746854U (en) | 2019-12-09 | 2019-12-09 | Air conditioning system combining natural cold source, dry air energy and mechanical refrigeration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922187170.6U CN212746854U (en) | 2019-12-09 | 2019-12-09 | Air conditioning system combining natural cold source, dry air energy and mechanical refrigeration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212746854U true CN212746854U (en) | 2021-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922187170.6U Active CN212746854U (en) | 2019-12-09 | 2019-12-09 | Air conditioning system combining natural cold source, dry air energy and mechanical refrigeration |
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| Country | Link |
|---|---|
| CN (1) | CN212746854U (en) |
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