CN112710041A - Double-pump hybrid-driven composite heat pipe energy-saving air conditioning system - Google Patents
Double-pump hybrid-driven composite heat pipe energy-saving air conditioning system Download PDFInfo
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- CN112710041A CN112710041A CN202110095608.7A CN202110095608A CN112710041A CN 112710041 A CN112710041 A CN 112710041A CN 202110095608 A CN202110095608 A CN 202110095608A CN 112710041 A CN112710041 A CN 112710041A
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- pump
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- heat pipe
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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
- F24F5/001—Compression cycle type
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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
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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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
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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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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- 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
- F24F5/0046—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 using natural energy, e.g. solar energy, energy from the ground
Abstract
A double-pump hybrid-driven composite heat pipe energy-saving air conditioning system comprises a compressor, an air pump, an evaporator, an indoor fan, a first electromagnetic valve, an electronic expansion valve, a fluorine pump, a second electromagnetic valve, a condenser and an outdoor fan; the compressor is connected with an air pump in parallel; a plurality of evaporators are arranged in parallel; the air outlets of the compressor and the air pump are connected with the air inlet of the condenser; the liquid outlet of the condenser is connected with the liquid inlet of the fluorine pump, and the discharge end of the electronic expansion valve is connected with the liquid inlet of the evaporator; the air outlet of the evaporator is connected with the compressor and the air inlet of the air pump. According to the invention, a double-pump technology, namely an air pump and liquid pump (fluorine pump) technology, is added to a mechanical refrigeration mode of a traditional compressor, so that the double-pump hybrid-driven efficient energy-saving heat pipe air conditioning system is realized, a natural cold source is fully utilized, the energy consumption of an air conditioner in a machine room is reduced, the energy is saved, the stability and the reliability of the system are improved, the safe operation of equipment in the machine room is ensured, and the service life of a unit is effectively prolonged.
Description
Technical Field
The invention relates to the field of refrigeration equipment, in particular to a double-pump hybrid-driven composite type heat pipe energy-saving air conditioning system.
Background
With the development of communication technology, the size of data centers is increasing and the power density is increasing. In order to improve the economic benefit of the communication machine room and respond to the national concepts of energy conservation, emission reduction and environmental protection, the study on the energy-saving technology of the air conditioner of the machine room is increased, which is very important.
The application of the energy-saving technology of the machine room air conditioner in the current telecommunication industry is mainly embodied as follows: on the basis of a traditional compressor mechanical refrigeration mode, an outdoor natural cold source is fully utilized by introducing a refrigerant pump (hereinafter referred to as a fluorine pump).
When the outdoor ambient temperature is higher than 25 ℃, the compressor is started, the fluorine pump is closed, and the system is in a traditional mechanical refrigeration mode.
When the outdoor environment temperature is lower than 5 ℃, the fluorine pump is started, and the compressor is closed. At this time, the refrigerant liquid in the indoor unit evaporator absorbs heat from the machine room or IT equipment, evaporates into refrigerant vapor, and then enters the outdoor condenser. After heat exchange with outdoor cold air is carried out in the condenser, the heat is condensed into liquid, and the liquid is conveyed to the evaporator through the fluorine pump, and the steps are repeated.
When the outdoor environment temperature is 5-25 ℃, the compressor and the fluorine pump are both started, and the system is in a mixed refrigeration mode. The fluorine pump is used for pressurizing, so that the evaporation temperature of the compressor is increased, the pressure ratio of the compressor is reduced, and the energy efficiency of the whole machine is improved. The system has the defects that the fluorine pump is easy to generate cavitation, the failure rate of the compressor and the fluorine pump is increased, and the service life of system components is shortened. Meanwhile, as the compression ratio of the compressor is still high, the operation energy consumption is only reduced compared with the mode of the compressor in operation all the year round, and the improvement and optimization are still needed.
Disclosure of Invention
Objects of the invention
In order to solve the technical problems in the background art, the invention provides a double-pump hybrid-driven composite heat pipe energy-saving air conditioning system, which makes full use of a natural cold source, reduces the energy consumption of an air conditioner in a machine room, realizes energy conservation, improves the stability and reliability of the system, ensures the safe operation of equipment in the machine room, and effectively prolongs the service life of a unit.
(II) technical scheme
In order to solve the problems, the invention provides a double-pump hybrid-driven composite type heat pipe energy-saving air conditioning system which comprises a compressor, an air pump, a plurality of evaporators, an indoor fan, a first electromagnetic valve, an electronic expansion valve, a fluorine pump, a second electromagnetic valve, a condenser and an outdoor fan;
the compressor, the air pump and the first electromagnetic valve are arranged in parallel; the fluorine pump and the second electromagnetic valve are arranged in parallel; a plurality of evaporators are arranged in parallel;
the air outlets of the compressor and the air pump are connected with the air inlet of the condenser; the liquid outlet of the condenser is connected with the liquid inlet of the fluorine pump; the liquid outlet of the electronic expansion valve is connected with the liquid inlet of the evaporator; the air outlet of the evaporator is respectively connected with the air inlet of the compressor and the air inlet of the air pump.
Preferably, the compressor is a direct current variable frequency scroll compressor.
Preferably, the air pump is a direct-current variable-frequency air pump, and the small pressure ratio is within the range of 0.5-2.
Preferably, the evaporator is of a V-shaped structure, and the evaporator is arranged in the indoor unit in the forward direction.
Preferably, the indoor fan is an EC centrifugal fan, the indoor fan is positioned above the evaporator, and a negative pressure area is arranged around the indoor fan.
Preferably, the electronic expansion valve is a valve for performing PID automatic adjustment of the refrigerant flow rate in accordance with the degree of superheat.
Preferably, the condenser is of a U-shaped configuration.
Preferably, the fluorine pump is a direct current variable frequency rotor pump.
Preferably, the outdoor fan is an EC axial flow fan.
Preferably, the following working modes are included:
s1: when the outdoor environment temperature is higher than 25 ℃, the compressor and the second electromagnetic valve 8 are opened, the air pump and the fluorine pump are closed, and the system starts the compressor refrigeration mode:
the refrigerant vapor absorbing heat in the evaporator is compressed into high-temperature and high-pressure gas by a compressor and then enters a condenser; then, the mixture enters the evaporator again through the electronic expansion valve, and the circulation is repeated in the way;
s2: when the outdoor environment temperature is 5-25 ℃, the air pump and the second electromagnetic valve are opened, the compressor, the first electromagnetic valve and the fluorine pump are closed, and the system starts the air pump operation mode:
the refrigerant vapor absorbing heat in the evaporator is pressurized by the air pump and then enters the condenser; the condensed refrigerant liquid returns to the evaporator again through the electronic expansion valve, and the circulation is carried out in this way;
s3: when the outdoor environment temperature is lower than 5 ℃, the fluorine pump and the first electromagnetic valve are opened, the compressor, the air pump and the second electromagnetic valve are closed, and the liquid pump operation mode is started:
refrigerant gas in the evaporator directly enters the condenser to exchange heat with external low-temperature air without being compressed and pressurized; then, the fluorine is forcibly conveyed into the evaporator by a fluorine pump, and the circulation is carried out in a reciprocating way.
According to the invention, the air pump is added to replace the operation of the compressor under the working condition that the outdoor environment temperature is 5-25 ℃, so that the compression ratio is greatly reduced on the premise of meeting the requirement of the refrigerating capacity, the overall energy efficiency under the working condition is improved, and the damage to the liquid pump and the compressor is avoided. Through increasing the rotor liquid pump, replace the compressor operation, abundant natural cold source that utilizes is particularly suitable for northern cold area, and energy-conserving effect is showing. Wherein, the system adopts a small pressure ratio air pump with the pressure sigma more than or equal to 0.5 and less than or equal to 2, and the energy consumption is far lower than that of the traditional compressor.
The invention realizes a double-pump mixed-drive efficient energy-saving heat pipe air conditioning system by introducing double-pump technologies, namely air pump and liquid pump technologies, fully utilizes natural cold sources, further reduces the energy consumption of the air conditioner in a machine room, and realizes energy conservation. Meanwhile, the stability and the reliability of the system are improved, the safe operation of equipment in a machine room is guaranteed, and the service life of the unit is effectively prolonged.
Drawings
Fig. 1 is a schematic structural diagram of an indoor unit in a dual-pump hybrid-driven composite heat pipe energy-saving air conditioning system provided by the invention.
Fig. 2 is a schematic structural diagram of an outdoor unit in the dual-pump hybrid-driven composite heat pipe energy-saving air conditioning system provided by the invention.
Fig. 3 is a general schematic diagram of a dual-pump hybrid-driven composite heat pipe energy-saving air conditioning system according to the present invention.
Fig. 4 is a schematic diagram of a refrigeration mode of a compressor in the dual-pump hybrid-driven composite heat pipe energy-saving air conditioning system according to the present invention.
Fig. 5 is a schematic diagram of an operation mode of an air pump in the dual-pump hybrid-driven composite heat pipe energy-saving air conditioning system provided by the invention.
Fig. 6 is a schematic view of an operation range of an air pump in a dual-pump hybrid-driven composite heat pipe energy-saving air conditioning system according to the present invention.
Fig. 7 is a schematic diagram of the operation mode of a liquid pump in the dual-pump hybrid-driven composite heat pipe energy-saving air conditioning system provided by the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
As shown in fig. 1-2, the dual-pump hybrid-driven composite heat pipe energy-saving air conditioning system provided by the invention comprises a compressor 1, an air pump 2, a plurality of evaporators 3, an indoor fan 4, a first electromagnetic valve 5, an electronic expansion valve 6, a fluorine pump 7, a second electromagnetic valve 8, a condenser 9 and an outdoor fan 10;
the compressor 1, the air pump 2 and the first electromagnetic valve 5 are arranged in parallel; the fluorine pump 7 and the second electromagnetic valve 8 are arranged in parallel; a plurality of evaporators 3 are arranged in parallel;
the air outlets of the compressor 1 and the air pump 2 are connected with the air inlet of the condenser 9; the liquid outlet of the condenser 9 is connected with the liquid inlet of the fluorine pump 7; the liquid outlet of the electronic expansion valve 6 is connected with the liquid inlet of the evaporator 3; the air outlet of the evaporator 3 is respectively connected with the air inlet of the compressor 1 and the air inlet of the air pump 2.
Wherein, the first electromagnetic valve 5 is used for performing pipeline bypass on the compressor 1 and the air pump 2, and the second electromagnetic valve 8 is used for performing pipeline bypass on the fluorine pump 7.
In an alternative embodiment, the following modes of operation are included:
s1: when the outdoor environment temperature is higher than 25 ℃, the compressor 1 and the second electromagnetic valve 8 are opened, the air pump 2 and the fluorine pump 7 are closed, and the system starts the compressor refrigeration mode:
the refrigerant vapor absorbing heat in the evaporator 3 is compressed into high-temperature and high-pressure gas by the compressor 1 and then enters the condenser 9; then, the liquid enters the evaporator 3 again through the electronic expansion valve 6, and the circulation is repeated in such a way;
s2: when the outdoor environment temperature is 5-25 ℃, the air pump 2 and the second electromagnetic valve 8 are opened, the compressor 1, the first electromagnetic valve 5 and the fluorine pump 7 are closed, and the system starts an air pump operation mode:
the refrigerant vapor absorbing heat in the evaporator 3 is pressurized by the air pump 2 and then enters the condenser 9; the condensed refrigerant liquid returns to the evaporator 3 again through the electronic expansion valve 6, and the cycle is repeated;
s3: when the outdoor environment temperature is lower than 5 ℃, the fluorine pump 7 and the first electromagnetic valve 5 are opened, the compressor 1, the air pump 2 and the second electromagnetic valve 8 are closed, and the liquid pump operation mode is started:
refrigerant gas in the evaporator 3 directly enters the condenser 9 to exchange heat with external low-temperature air without being compressed and pressurized; then, the fluorine is forcibly fed into the evaporator 3 by the fluorine pump 7, and the cycle is repeated.
According to the invention, the air pump is added to replace the operation of the compressor under the working condition that the outdoor environment temperature is 5-25 ℃, so that the compression ratio is greatly reduced on the premise of meeting the requirement of the refrigerating capacity, the overall energy efficiency under the working condition is improved, and the damage to the liquid pump and the compressor is avoided. Through increasing the rotor liquid pump, replace the compressor operation, abundant natural cold source that utilizes is particularly suitable for northern cold area, and energy-conserving effect is showing.
In an alternative embodiment, the compressor 1 is a dc frequency conversion scroll compressor, which has low noise, reliable operation balance, high efficiency and energy saving.
In an alternative embodiment, the air pump 2 is a dc variable frequency air pump, and the low pressure ratio is in the range of 0.5-2, which is much less than the power consumption of a conventional compressor.
In an alternative embodiment, the evaporator 3 is of a V-shaped configuration, and the evaporator 3 is arranged in the indoor unit in a forward direction for heat exchange with hot air in the machine room.
In an alternative embodiment, the indoor fan 4 is an EC centrifugal fan, the indoor fan 4 is located above the evaporator 3, and a negative pressure area is around the indoor fan 4, so that the hot air in the machine room flows towards the evaporator 3. The indoor fan 4 has low noise and can realize stepless speed regulation.
In an alternative embodiment, the electronic expansion valve 6 is a valve for performing PID automatic adjustment of the refrigerant flow rate according to the degree of superheat.
In an alternative embodiment, the condenser 9 is a U-shaped structure, which has a smaller footprint and a more compact overall structure.
In an alternative embodiment, the fluorine pump 7 is a dc variable frequency rotor pump, which can effectively prevent the occurrence of cavitation.
In an alternative embodiment, the outdoor fan 10 is an EC axial flow fan, which has a large air volume, a simple structure, and is stable and reliable.
It should be noted that the system uses a low pressure ratio air pump with a pressure ≤ 0.5 ≤ Σ ≤ 2, and the energy consumption is much lower than that of the conventional compressor. The detailed operation range of the air pump is shown in fig. 6.
Therefore, under the condition that the refrigerating capacity meets the requirement, the air pump running mode is adopted, and the energy efficiency ratio of the whole air conditioner is higher than that of the existing air conditioner adopting a mixed mode of a compressor and a fluorine pump.
In summary, the invention realizes a double-pump hybrid-driven high-efficiency energy-saving heat pipe air conditioning system by introducing double-pump technology, namely air pump and liquid pump technology, fully utilizes natural cold source, further reduces energy consumption of air conditioners in machine rooms, and realizes energy saving. Meanwhile, the stability and the reliability of the system are improved, the safe operation of equipment in a machine room is guaranteed, and the service life of the unit is effectively prolonged.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (10)
1. A double-pump hybrid-driven composite type heat pipe energy-saving air conditioning system is characterized by comprising a compressor (1), an air pump (2), a plurality of evaporators (3), an indoor fan (4), a first electromagnetic valve (5), an electronic expansion valve (6), a fluorine pump (7), a second electromagnetic valve (8), a condenser (9) and an outdoor fan (10);
the compressor (1), the air pump (2) and the first electromagnetic valve (5) are arranged in parallel; the fluorine pump (7) and the second electromagnetic valve (8) are arranged in parallel; a plurality of evaporators (3) are arranged in parallel;
the air outlets of the compressor (1) and the air pump (2) are connected with the air inlet of the condenser (9); the liquid outlet of the condenser (9) is connected with the liquid inlet of the fluorine pump (7); a liquid outlet of the electronic expansion valve (6) is connected with a liquid inlet of the evaporator (3); the air outlet of the evaporator (3) is respectively connected with the air inlet of the compressor (1) and the air inlet of the air pump (2).
2. The dual-pump hybrid-driven composite type heat pipe energy-saving air conditioning system as claimed in claim 1, wherein the compressor (1) is a direct-current variable-frequency scroll compressor.
3. The dual-pump hybrid-driven composite type heat pipe energy-saving air conditioning system as claimed in claim 1, wherein the air pump (2) is a direct-current variable-frequency air pump, and the low pressure ratio is in the range of 0.5-2.
4. The dual-pump hybrid-driven composite type heat pipe energy-saving air conditioning system according to claim 1, wherein the evaporator (3) is of a V-shaped structure, and the evaporator (3) is arranged in the indoor unit in the forward direction.
5. The dual-pump hybrid-driven composite type heat pipe energy-saving air conditioning system according to claim 1, wherein the indoor fan (4) is an EC centrifugal fan, the indoor fan (4) is located above the evaporator (3), and a negative pressure region is arranged around the indoor fan (4).
6. The dual-pump mixed-driving composite heat pipe energy-saving air-conditioning system as claimed in claim 1, wherein the electronic expansion valve (6) is a valve for performing PID automatic adjustment of refrigerant flow rate according to superheat degree.
7. The dual-pump hybrid-driven composite type heat pipe energy-saving air-conditioning system as claimed in claim 1, wherein the condenser (9) is of a U-shaped structure.
8. The dual-pump hybrid-driven composite type heat pipe energy-saving air conditioning system as claimed in claim 1, wherein the fluorine pump (7) is a direct-current variable-frequency rotor pump.
9. The dual-pump hybrid-driven composite type heat pipe energy-saving air conditioning system according to claim 1, wherein the outdoor fan (10) is an EC axial flow fan.
10. The dual-pump hybrid-driven composite heat pipe energy-saving air conditioning system according to any one of claims 1 to 9, characterized by comprising the following working modes:
s1: when the outdoor environment temperature is higher than 25 ℃, the compressor (1) and the second electromagnetic valve (8) are opened, the air pump (2) and the fluorine pump (7) are closed, and the system starts the compressor refrigeration mode:
the refrigerant vapor absorbing heat in the evaporator (3) is compressed into high-temperature and high-pressure gas by the compressor (1) and then enters the condenser (9); then, the liquid enters the evaporator (3) again through the electronic expansion valve (6) and is circulated in a reciprocating way;
s2: when the outdoor environment temperature is 5-25 ℃, the air pump (2) and the second electromagnetic valve (8) are opened, the compressor (1), the first electromagnetic valve (5) and the fluorine pump (7) are closed, and the system starts an air pump operation mode:
the refrigerant vapor absorbing heat in the evaporator (3) is subjected to pressure increase by the air pump (2) and then enters the condenser (9); the condensed refrigerant liquid returns to the evaporator (3) again through the electronic expansion valve (6), and the cycle is repeated;
s3: when the outdoor environment temperature is lower than 5 ℃, the fluorine pump (7) and the first electromagnetic valve (5) are opened, the compressor (1), the air pump (2) and the second electromagnetic valve (8) are closed, and the liquid pump operation mode is started:
refrigerant gas in the evaporator (3) directly enters the condenser (9) to exchange heat with external low-temperature air without being compressed and pressurized; then, the fluorine is forcibly transferred into the evaporator (3) by the fluorine pump (7), and the circulation is repeated.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110095608.7A CN112710041A (en) | 2021-01-25 | 2021-01-25 | Double-pump hybrid-driven composite heat pipe energy-saving air conditioning system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110095608.7A CN112710041A (en) | 2021-01-25 | 2021-01-25 | Double-pump hybrid-driven composite heat pipe energy-saving air conditioning system |
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| CN112710041A true CN112710041A (en) | 2021-04-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114087738A (en) * | 2021-11-11 | 2022-02-25 | 珠海格力电器股份有限公司 | Control method and device of air conditioner, storage medium and air conditioner |
| CN114110975A (en) * | 2021-11-11 | 2022-03-01 | 珠海格力电器股份有限公司 | Control method and device of air conditioner, storage medium and air conditioner |
-
2021
- 2021-01-25 CN CN202110095608.7A patent/CN112710041A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114087738A (en) * | 2021-11-11 | 2022-02-25 | 珠海格力电器股份有限公司 | Control method and device of air conditioner, storage medium and air conditioner |
| CN114110975A (en) * | 2021-11-11 | 2022-03-01 | 珠海格力电器股份有限公司 | Control method and device of air conditioner, storage medium and air conditioner |
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