CN111561755A - Combined type energy-saving air conditioner - Google Patents
Combined type energy-saving air conditioner Download PDFInfo
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- CN111561755A CN111561755A CN202010560701.6A CN202010560701A CN111561755A CN 111561755 A CN111561755 A CN 111561755A CN 202010560701 A CN202010560701 A CN 202010560701A CN 111561755 A CN111561755 A CN 111561755A
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- 239000003507 refrigerant Substances 0.000 claims abstract description 117
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 96
- 238000001816 cooling Methods 0.000 claims abstract description 47
- 238000005057 refrigeration Methods 0.000 description 15
- 238000005516 engineering process Methods 0.000 description 9
- 238000004378 air conditioning Methods 0.000 description 7
- 238000004134 energy conservation Methods 0.000 description 6
- 230000009467 reduction Effects 0.000 description 6
- 238000012546 transfer Methods 0.000 description 6
- 238000004891 communication Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000007791 dehumidification Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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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
-
- 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
- F24F11/64—Electronic processing using pre-stored data
-
- 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
-
- 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
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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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
- 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
- F24F11/85—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 variable-flow pumps
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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
- F24F11/89—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
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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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]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Signal Processing (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Fuzzy Systems (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Fluid Mechanics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a combined type energy-saving air conditioner, which comprises a cold water tank, a water cooling plate, a first cold water pump ball valve, a first shockproof tapered end, a cold water pump, a second shockproof tapered end and a second cold water pump ball valve, wherein a fourth electromagnetic valve is respectively connected with a fourth indoor device, a third indoor device, a second indoor device, a first indoor device and a first electromagnetic valve through pipelines, the first electromagnetic valve is connected with a first electromagnetic valve through a pipeline, the first electromagnetic valve is respectively connected with a high-pressure sensor, a variable-frequency refrigerant pump, a low-pressure sensor and a second electromagnetic valve through pipelines, the low-pressure sensor is connected with an air-cooled condenser through a pipeline, a first outdoor fan is fixedly installed on the outer side of the air-cooled condenser, the air-cooled condenser is connected with a one-way valve through a pipeline, the. The mode of water-cooling multi-connected heat pipes at high outdoor temperature and the mode of variable-frequency refrigerant pumps at low outdoor temperature are adopted, and natural cold sources are utilized to save energy better.
Description
Technical Field
The invention relates to the technical field of energy-saving air conditioners, in particular to a combined type energy-saving air conditioner.
Background
With the high-speed development of the information industry, the energy conservation and emission reduction work of the communication network becomes one of important indexes for examining operation enterprises, and under the dual index pressure of energy conservation and emission reduction and low-cost operation, the energy conservation and emission reduction work of telecommunication operation enterprises is mainly focused on reducing the consumption of electric power energy. The energy conservation and emission reduction work of the comprehensive hub area is mainly to reduce the energy consumption of communication main equipment and an air conditioner, and the energy conservation of a high-voltage system and a low-voltage system and a communication power supply is not neglected. Firstly, ensuring various communication devices to be in the best energy-saving working state, reasonably configuring the system capacity of the communication network devices, improving the input power factor of power equipment, scientifically managing the harm of harmonic waves in a circuit, and secondly, directly and indirectly utilizing a natural cold source to reduce the power consumption of an air conditioner in a machine room to the maximum extent. Telecom operation enterprises have made clear the focus and direction of energy saving and emission reduction work through the continuous popularization and application of energy saving and emission reduction products in recent years, that is, the energy saving of air conditioning equipment, the energy saving potential of the air conditioning equipment is huge, and the air conditioning equipment is an important link of energy saving. With the application of high power density technology, cloud computing and IDC development, the air conditioner in the machine room almost accounts for more than 50% of the total power consumption. At present, a plurality of mature application technologies for machine room air conditioners comprise a variable frequency energy-saving technology, a condenser atomization spraying technology, an air conditioner water chilling unit water treatment energy-saving technology, an ethylene glycol energy-saving unit, a wet film humidification energy-saving technology, a fluorine pump energy-saving technology, a group control energy-saving technology and the like.
Most of the air conditioning systems of today are in a form of combining a pump and a compressor, and the form is slightly single, so that natural resources cannot be fully utilized. Most of the air conditioners in the cooling equipment for year round refrigeration in use at present are air-cooled air conditioners, the outdoor temperature is lower than the indoor temperature in many high-latitude areas, heat spontaneously diffuses and transfers to the outdoor along with the temperature gradient, and the heat transfer by utilizing the compression refrigeration cycle of the air conditioner is extremely waste of energy. The outdoor natural cold source can be repeatedly utilized for the operation of the single refrigerant pump, the refrigerant pump provides power to efficiently save energy, and the low-temperature refrigerant on the outdoor side is transferred to the indoor side to exchange heat with the high-temperature heat source; however, the refrigerant pump is generally only used for refrigerant liquid, and refrigerant gas cannot be completely transferred, so that the phenomenon of 'gas lock' of the refrigerant pump is easily caused, and the refrigerant pump cannot work. At the same time, the refrigerant pump should be operated with a suitable pressure difference interval. The larger the pressure difference between the front and the back of the pump is, the more the power of the refrigerant pump can be increased, but the energy is not saved; the smaller the pressure difference between the front and the rear of the pump is, the lower the flow rate of the refrigerant is, the lower the cooling capacity of the indoor side is, and the higher the temperature of the equipment in the machine room is. Therefore, the refrigerant pump can be operated efficiently and energy-saving only by directly controlling the outdoor fan and the refrigerant pump. Therefore, a combined type energy-saving air conditioner is provided.
Disclosure of Invention
The invention aims to provide a composite energy-saving air conditioner, which solves the problem that most of the existing air conditioning systems are in a form of combining a pump and a compressor, the form is slightly single, and natural resources cannot be fully utilized. Most of the air conditioners in the cooling equipment for year round refrigeration in use at present are air-cooled air conditioners, the outdoor temperature is lower than the indoor temperature in many high-latitude areas, heat spontaneously diffuses and transfers to the outdoor along with the temperature gradient, and the heat transfer by utilizing the compression refrigeration cycle of the air conditioner is extremely waste of energy. The outdoor natural cold source can be repeatedly utilized for the operation of the single refrigerant pump, the refrigerant pump provides power to efficiently save energy, and the low-temperature refrigerant on the outdoor side is transferred to the indoor side to exchange heat with the high-temperature heat source; however, the refrigerant pump is generally only used for refrigerant liquid, and refrigerant gas cannot be completely transferred, so that the phenomenon of 'gas lock' of the refrigerant pump is easily caused, and the refrigerant pump cannot work. At the same time, the refrigerant pump should be operated with a suitable pressure difference interval. The larger the pressure difference between the front and the back of the pump is, the more the power of the refrigerant pump can be increased, but the energy is not saved; the smaller the pressure difference between the front and the rear of the pump is, the lower the flow rate of the refrigerant is, the lower the cooling capacity of the indoor side is, and the higher the temperature of the equipment in the machine room is. Therefore, the refrigerant pump can be operated efficiently and energy-saving only by the direct control of the outdoor fan and the refrigerant pump.
In order to achieve the purpose, the invention provides the following technical scheme: a combined energy-saving air conditioner comprises a cold water tank and a water cooling plate exchanger, wherein a two-way valve + actuator, a first cold water pump ball valve, a first shockproof lock head, a cold water pump, a second shockproof lock head and a second cold water pump ball valve are respectively arranged between the cold water tank and the water cooling plate exchanger, the first cold water pump ball valve, the first shockproof lock head, the cold water pump, the second shockproof lock head and the second cold water pump ball valve are connected in series, the first cold water pump ball valve, the first shockproof lock head, the cold water pump, the second shockproof lock head and the second cold water pump ball valve are all connected in parallel with the two-way valve + actuator, the water cooling plate exchanger is connected with a fourth electromagnetic valve through a pipeline, the fourth electromagnetic valve is respectively connected with a fourth indoor device, a third indoor device, a second indoor device, a first indoor device and a first electromagnetic valve through pipelines, the fourth indoor device, the third indoor device, the second device and the first indoor device, first solenoid valve has first solenoid valve through the pipe connection, first solenoid valve is connected with high pressure sensor, frequency conversion refrigerant pump, low pressure sensor, second solenoid valve respectively through the pipeline, high pressure sensor, frequency conversion refrigerant pump and low pressure sensor establish ties, just the second solenoid valve, high pressure sensor, frequency conversion refrigerant pump and low pressure sensor all with the second solenoid valve between parallelly connected, low pressure sensor has the air cooled condenser through the pipe connection, air cooled condenser outside fixed mounting has first outdoor fan, just the air cooled condenser has the check valve through the pipe connection, the check valve has the filter through the pipe connection, the filter has the fifth solenoid valve through the pipe connection, the third solenoid valve that is connected is traded with the water-cooling board through the pipe connection.
Preferably, the first indoor unit comprises a first terminal electronic expansion valve and a fifth terminal electronic expansion valve which are connected with the fourth solenoid valve and the first solenoid valve, the fifth terminal electronic expansion valve is connected with a fifth terminal through a pipeline, a fifth indoor fan is fixedly installed on the outer side of the fifth terminal, the first terminal electronic expansion valve is connected with a first terminal through a pipeline, and a first indoor fan is fixedly installed on the outer side of the first terminal.
Preferably, the second indoor unit comprises a second end connected with the first end, a second indoor fan is fixedly mounted on the outer side of the second end, the second end is connected with a second end electronic expansion valve connected with a first end electronic expansion valve through a pipeline, the second indoor unit comprises a sixth end connected with a fifth end, a sixth indoor fan is fixedly mounted on the outer side of the sixth end, and the sixth end is connected with a sixth end electronic expansion valve connected with the fifth end electronic expansion valve through a pipeline.
Preferably, the indoor unit three comprises a third end connected with the second end, a third indoor fan is fixedly mounted on the outer side of the third end, the third end is connected with a third electronic expansion valve connected with a second electronic expansion valve at the end through a pipeline, the third indoor unit comprises a seventh end connected with a sixth end, a seventh indoor fan is fixedly mounted on the outer side of the seventh end, and the seventh end is connected with a seventh electronic expansion valve connected with the sixth end through a pipeline.
Preferably, indoor set four is including the end four of being connected with end three, the outside fixed mounting of end four has the indoor fan of fourth, just end four-way cross the pipe connection have the end four electronic expansion valve of being connected with the three electronic expansion valve of end, indoor set four is including the end eight of being connected with end seven, the outside fixed mounting of end eight has the indoor fan of eighth, just end eight has the eight electronic expansion valve of end of being connected with seven electronic expansion valves of end through the pipe connection.
Preferably, the fifth electromagnetic valve and the third electromagnetic valve are both fixedly connected with the end four through a pipeline, and the fifth electromagnetic valve and the third electromagnetic valve are both fixedly connected with the end eight through a pipeline.
Preferably, the high-pressure sensor, the variable-frequency refrigerant pump, the low-pressure sensor, the first outdoor fan, the air-cooled condenser, the one-way valve, the filter, the fifth electromagnetic valve, the third electromagnetic valve, the water-cooled plate, the fourth electromagnetic valve and the first electromagnetic valve form a closed loop.
Preferably, a closed loop is formed among the first outdoor fan, the air-cooled condenser, the one-way valve, the filter, the fifth electromagnetic valve, the third electromagnetic valve, the water-cooled plate exchanger, the fourth electromagnetic valve, the first electromagnetic valve and the second electromagnetic valve.
Preferably, a closed loop is formed among the third solenoid valve, the water cooling plate, the fourth solenoid valve, the first end electronic expansion valve, the first end, the second end, the third end and the fourth end.
Preferably, a closed loop is formed among the third solenoid valve, the water cooling plate, the fourth solenoid valve, the electronic expansion valve at the end five, the end six, the end seven and the end eight.
Compared with the prior art, the invention has the following beneficial effects:
1. the mode of water-cooling multi-connected heat pipes is adopted for high outdoor temperature, and the mode of variable-frequency refrigerant pumps is adopted for low outdoor temperature, so that natural cold sources are utilized, and energy is saved;
2. in order to prevent the phenomenon of 'gas lock' when the refrigerant pump is just started again, a bypass branch is added at the refrigerant pump to protect the refrigerant pump;
3. when the variable-frequency refrigerant pump detects a problem due to the front and back pressure difference and cannot be solved temporarily, the variable-frequency refrigerant pump system is closed, and the water-cooling multi-connected heat pipe system is opened to ensure the operation of the whole system;
4. when the system is in a water-cooling multi-connected heat pipe mode, if the system cannot meet the required refrigerating capacity in the comprehensive operation mode, the variable-frequency refrigerant pump mode is started, so that the system enters a double-system operation mode to meet the refrigerating requirement.
Drawings
Fig. 1 is an explanatory diagram of a multiple heat pipe air conditioning system device system according to the present invention;
FIG. 2 is a flow chart of the start-up inverter refrigerant pump mode of the present invention;
FIG. 3 is a flow chart of a water-cooling multiple heat pipe mode according to the present invention.
In the figure: 1. a high pressure sensor; 2. a variable frequency refrigerant pump; 3. a low pressure sensor; 4. a first outdoor fan; 5. an air-cooled condenser; 6. a one-way valve; 7. a filter; 8. a fifth solenoid valve; 9. a cold water tank; 10. indoor equipment IV; 11. indoor equipment III; 12. indoor equipment II; 13. indoor equipment I; 14. a first solenoid valve; 15. a second solenoid valve; 16. a third electromagnetic valve; 17. changing a water-cooling plate; 18. a two-way valve + actuator; 19. a fourth solenoid valve; 20. a first cold water pump ball valve; 21. a first shockproof tapered end; 22. a cold water pump; 23. a second shockproof tapered end; 24. a second cold water pump ball valve; 25. the tail end is provided with an electronic expansion valve; 26. a first indoor fan; 27. a first terminal; 28. the second electronic expansion valve at the tail end; 29. a second indoor fan; 30. a second terminal; 31. the tail end is provided with three electronic expansion valves; 32. a third indoor fan; 33. a third terminal; 34. the tail end is provided with four electronic expansion valves; 35. a fourth indoor fan; 36. end four; 37. a five-end electronic expansion valve; 38. a fifth indoor fan; 39. end five; 40. the tail end is provided with six electronic expansion valves; 41. a sixth indoor fan; 42. the tail end is six; 43. a terminal seven electronic expansion valve; 44. a seventh indoor fan; 45. a seventh end; 46. eight electronic expansion valves at the tail end; 47. an eighth indoor fan; 48. and the tail end is eight.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Example 1:
referring to fig. 1-3, a combined energy-saving air conditioner includes a cold water tank 9 and a water cooling plate exchanger 17, a two-way valve + actuator 18, a first cold water pump ball valve 20, a first shockproof tapered end 21, a cold water pump 22, a second shockproof tapered end 23 and a second cold water pump ball valve 24 are respectively disposed between the cold water tank 9 and the water cooling plate exchanger 17, the first cold water pump ball valve 20, the first shockproof tapered end 21, the cold water pump 22, the second shockproof tapered end 23 and the second cold water pump ball valve 24 are connected in series, the first cold water pump ball valve 20, the first shockproof tapered end 21, the cold water pump 22, the second shockproof tapered end 23 and the second cold water pump ball valve 24 are all connected in parallel with the two-way valve + actuator 18, the water cooling plate exchanger 17 is connected with a fourth electromagnetic valve 19 through a pipeline, the fourth electromagnetic valve 19 is respectively connected with an indoor equipment four 10, an indoor equipment three 11, an indoor equipment two 12, an indoor equipment one 13 and a first, the fourth indoor equipment 10, the third indoor equipment 11, the second indoor equipment 12 and the first indoor equipment 13 are connected in parallel, the first electromagnetic valve 14 is connected with a first electromagnetic valve 14 through a pipeline, the first electromagnetic valve 14 is respectively connected with a high-pressure sensor 1, a variable-frequency refrigerant pump 2, a low-pressure sensor 3 and a second electromagnetic valve 15 through pipelines, the high-pressure sensor 1, the variable-frequency refrigerant pump 2 and the low-pressure sensor 3 are connected in series, a second electromagnetic valve 15, a high-pressure sensor 1, a variable-frequency refrigerant pump 2 and a low-pressure sensor 3 are connected in parallel with the second electromagnetic valve 15, the low-pressure sensor 3 is connected with an air-cooled condenser 5 through a pipeline, a first outdoor fan 4 is fixedly arranged on the outer side of the air-cooled condenser 5, and the air-cooled condenser 5 is connected with a one-way valve 6 through a pipeline, the one-way valve 6 is connected with a filter 7 through a pipeline, the filter 7 is connected with a fifth electromagnetic valve 8 through a pipeline, and the fifth electromagnetic valve 8 is connected with a third electromagnetic valve 16 connected with a water-cooled plate 17 through a pipeline.
Referring to fig. 1, the first indoor unit 13 includes a first-end electronic expansion valve 25 and a fifth-end electronic expansion valve 37 connected to the fourth solenoid valve 19 and the first solenoid valve 14, the fifth-end electronic expansion valve 37 is connected to a fifth end 39 through a pipe, a fifth indoor fan 38 is fixedly installed on an outer side of the fifth end 39, the first-end electronic expansion valve 25 is connected to a first end 27 through a pipe, and a first indoor fan 26 is fixedly installed on an outer side of the first end 27.
Referring to fig. 1, the second indoor unit 12 includes a second end 30 connected to the first end 27, a second indoor fan 29 is fixedly installed on an outer side of the second end 30, the second end 30 is connected to a second end electronic expansion valve 28 connected to the first end electronic expansion valve 25 through a pipe, the second indoor unit 12 includes a sixth end 42 connected to a fifth end 39, a sixth indoor fan 41 is fixedly installed on an outer side of the sixth end 42, and the sixth end 42 is connected to a sixth end electronic expansion valve 40 connected to the fifth end electronic expansion valve 37 through a pipe.
Referring to fig. 1, the third indoor unit 11 includes a third terminal 33 connected to the second terminal 30, a third indoor fan 32 is fixedly installed outside the third terminal 33, the third terminal 33 is connected to a third terminal electronic expansion valve 31 connected to the second terminal electronic expansion valve 28 through a pipe, the third indoor unit 11 includes a seventh terminal 45 connected to a sixth terminal 42, a seventh indoor fan 44 is fixedly installed outside the seventh terminal 45, and the seventh terminal 45 is connected to a seventh terminal electronic expansion valve 43 connected to the sixth terminal electronic expansion valve 40 through a pipe.
Referring to fig. 1, the indoor unit four 10 includes a terminal four 36 connected to the terminal three 33, a fourth indoor fan 35 is fixedly installed on an outer side of the terminal four 36, the terminal four 36 is connected to a terminal four electronic expansion valve 34 connected to the terminal three electronic expansion valve 31 through a pipe, the indoor unit four 10 includes a terminal eight 48 connected to a terminal seven 45, an eighth indoor fan 47 is fixedly installed on an outer side of the terminal eight 48, and the terminal eight 48 is connected to a terminal eight electronic expansion valve 46 connected to the terminal seven electronic expansion valve 43 through a pipe.
Referring to fig. 1, the fifth solenoid valve 8 and the third solenoid valve 16 are both fixedly connected to the fourth end 36 through a pipeline, and the fifth solenoid valve 8 and the third solenoid valve 16 are both fixedly connected to the eighth end 48 through a pipeline.
Referring to fig. 1, a high pressure sensor 1, a variable frequency refrigerant pump 2, a low pressure sensor 3, a first outdoor fan 4, an air-cooled condenser 5, a check valve 6, a filter 7, a fifth solenoid valve 8, a third solenoid valve 16, a water-cooled plate 17, a fourth solenoid valve 19, and a first solenoid valve 14 form a closed loop.
Referring to fig. 1, a closed loop is formed among a first outdoor fan 4, an air-cooled condenser 5, a check valve 6, a filter 7, a fifth solenoid valve 8, a third solenoid valve 16, a water-cooled plate 17, a fourth solenoid valve 19, and a first solenoid valve 14 and a second solenoid valve 15.
Referring to fig. 1, a closed loop is formed among the third solenoid valve 16, the water-cooling plate 17, the fourth solenoid valve 19, the one-end electronic expansion valve 25, the one-end 27, the two-end 30, the three-end 33 and the four-end 36.
Referring to fig. 1, a closed loop is formed among the third solenoid valve 16, the water-cooling plate 17, the fourth solenoid valve 19, the five-end electronic expansion valve 37, the five-end 39, the six-end 42, the seven-end 45 and the eight-end 48.
The working principle is as follows: the first mode of operation is a variable frequency refrigerant pump mode. In the working process, a high-pressure sensor 1, a first electromagnetic valve 14, a tail end one electronic expansion valve 25, a first indoor fan 26, a tail end one 27, a tail end two electronic expansion valve 28, a second indoor fan 29, a tail end two 30, a tail end three electronic expansion valve 31, a third indoor fan 32, a tail end three 33, a tail end four electronic expansion valve 34, a fourth indoor fan 35, a tail end four 36, a fifth electromagnetic valve 8, a filter 7, a one-way valve 6, an air-cooled condenser 5, a first outdoor fan 4, a low-pressure sensor 3, a variable-frequency refrigerant pump 2 and a second electromagnetic valve 15 form a mode.
The second mode of operation is a water cooled panel exchange mode. In the working process, a fifth electronic expansion valve 37 at the tail end, a fifth indoor fan 38, a fifth electronic expansion valve 39 at the tail end, a sixth electronic expansion valve 40 at the tail end, a sixth indoor fan 41, a sixth electronic expansion valve 42 at the tail end, a seventh electronic expansion valve 43 at the tail end, a seventh indoor fan 44, a seventh electronic expansion valve 45 at the tail end, an eighth electronic expansion valve 46 at the tail end, an eighth indoor fan 47, a third electromagnetic valve 16, a water cooling plate switch 17, a cold water tank 9, a two-way valve + an actuator 18, a first cold water pump ball valve 20, a first shockproof tapered end 21, a cold water pump 22, a second shockproof tapered end 23, a second cold water pump ball valve 24 and a fourth.
The energy-saving characteristic of the device is as follows: the operation mode is controlled according to the outdoor dry bulb temperature obtained by the measurement of the outdoor dry bulb temperature instrument, so that outdoor natural resources are fully utilized, and the energy conservation is maximized. According to the outdoor temperature, an inverter refrigerant pump is used for adjusting the flow rate, so that the excessive refrigeration condition caused by low outdoor temperature in winter is prevented. When the outdoor temperature is too low, the excessive dehumidification phenomenon is prevented by adjusting or adding the humidifying equipment by changing the air volume. The flow rate of the water cooling plate is adjusted according to the temperature difference of the inlet and the outlet of the refrigerant. The device adopts a water-cooling multi-connected heat pipe mode at high outdoor temperature and a variable-frequency refrigerant pump mode at low outdoor temperature, and fully uses natural resources. The traditional air conditioner compresses a refrigerant into high-temperature high-pressure steam from low-temperature steam by a compressor, has high energy consumption, does not need to start the compressor to ensure that the air conditioner obtains a refrigeration effect under the appropriate conditions of natural cold source utilization, transition seasons and the like, and can obtain a better refrigeration effect when the cooling capacity meets the indoor cooling load requirement. This device switches the operation mode through outdoor dry bulb temperature, and is more sensitive, more convenient control entire system. The operation pipeline of the heat pipe multi-system and the variable-frequency refrigerant pump of the whole system is optimized, and the system performance is optimized through control.
When the outdoor side temperature is less than: when the refrigerant pump is in operation, the specific control requirements are as follows: the second solenoid valve 15 is opened to open its bypass branch. The outdoor fan is operated at a certain speed (generally 50%), and then the temperature of the refrigerant entering the refrigerant pump and the inlet pressure of the refrigerant pump are detected. If the saturation temperature corresponding to the inlet pressure of the refrigerant pump is lower than the inlet temperature of the refrigerant pump of the refrigerant, the refrigerant pump is not started firstly. If the refrigerant pump is activated at this time, it will cause "gas lock" of the refrigerant pump, mainly because: the refrigerant pump only powers the refrigerant liquid, and at this time, the refrigerant pressure is too low, which may cause the refrigerant to enter the refrigerant pump to vaporize, causing the refrigerant pump to fail to operate, and damaging the devices inside the refrigerant pump. In this case, the pressure of the indoor-side refrigerant is increased by increasing the rotation speed of the indoor fan to increase the temperature of the indoor-side refrigerant. After the refrigerant in the indoor side migrates to the outdoor side (because the temperature in the outdoor side is low at this time, the refrigerant in the indoor side migrates to the outdoor side due to the pressure difference), the pressure of the refrigerant increases; when the rotating speed is larger than the preset rotating speed, the bypass branch is closed, and then the refrigerant pump is started, and the rotating speed of the variable-frequency refrigerant pump is started at 50 percent; and then detecting the pressure difference of an inlet and an outlet of the variable-frequency refrigerant pump to control the rotating speed of the variable-frequency refrigerant pump, and specifically controlling and implementing: ensuring that the pressure difference of the refrigerant before and after the variable-frequency refrigerant pump is (generally 3bar or other pressure differences can be selected), is higher than the rotating speed of the variable-frequency refrigerant pump and lower than the rotating speed of the variable-frequency refrigerant pump, and controlling the rotating speed of the variable-frequency refrigerant pump according to the requirement of the rotating speed P (the known technology in the industry); and if the pressure difference between the front and the rear of the variable-frequency refrigerant pump is detected to be smaller than (generally 1bar or other pressure differences), closing the air-cooled refrigerant pump system and operating in a water-cooled multi-heat-pipe mode. This situation may be the case if the inverter refrigerant pump fails, and the fluorine pump operation is stopped for about 5 minutes. If the fault is eliminated, the variable-frequency refrigerant pump is started; if the fault can not be eliminated temporarily, the multi-heat-pipe water-cooling system is operated in a water-cooling multi-heat-pipe mode; in the running process of the air-cooled refrigerant pump, the outdoor fan is adjusted according to the temperature of the refrigerant at the inlet of the variable-frequency refrigerant pump, if the target temperature of the refrigerant is (generally 0 ℃ or other temperatures), the outdoor fan runs at full speed and is lower than the target temperature, the outdoor fan runs at reduced speed, and the temperature of the refrigerant is maintained; the main reasons are: if the temperature of the refrigerant is too low, return air (generally 27 ℃) to the indoor side and the indoor side can cause larger dehumidification of the indoor side, and cause lower moisture content of the indoor side; if the temperature of the refrigerant is high, the refrigerating capacity to the indoor side is low, and the energy-saving effect is low. In addition, for the system, each tail end can control the refrigeration requirement of the indoor side through the opening degree of the indoor side electronic expansion valve, and when the indoor side return air temperature is detected to be lower, the rotating speed of the indoor side fan and the opening degree of the electronic expansion valve are reduced to achieve the refrigeration requirement of the indoor side refrigerant. The intelligent control process is briefly explained by fig. 2.
And when the outdoor temperature is higher than the preset temperature, operating the water-cooling multi-connected heat pipe mode. When the water level in the cold water tank is lower and touches a water replenishing point, the low water level switch is switched on for automatic water replenishing, and the flow of the frozen water in the frozen water system is increased; when the water level in the cold water tank is higher than the designated point, the high water level switch is automatically switched off to remove the redundant water quantity so as to ensure the flow of the frozen water in the system.
The temperature of the refrigerant which is exchanged through the water cooling plate and meets the refrigerating capacity is detected, and the temperature of the refrigerant at the exchanging outlet of the water cooling plate is actually detected. When the time is equal, the system operates normally and stably. When > then the two-way valve + actuator 18 will decrease the opening of the valve, decrease the amount of chilled water, decrease heat transfer, and achieve the refrigeration demand of the indoor side refrigerant by increasing the rotational speed of the indoor side fan and the opening of the electronic expansion valve. When the temperature is higher than the preset temperature, the two-way valve + actuator 18 increases the opening degree of the valve to increase the amount of the chilled water to increase the heat transfer, and the refrigerating requirement of the indoor side refrigerant is met by reducing the rotating speed of the indoor side fan and the opening degree of the electronic expansion valve. When the temperature difference value is generally 15 ℃ or other temperature differences, the maximum opening degree of the two-way valve and the actuator 18 does not meet the refrigerating capacity, the variable-frequency refrigerant pump is started to enter a dual-system mode, and the operation is finished. The double-system mode refers to that the water-cooling multi-connected heat pipe mode and the frequency conversion refrigerant pump mode are started together for cooling. When the water-cooling multi-heat-pipe mode is operated in full load but does not meet the indoor refrigeration requirement, the fifth electromagnetic valve 8 and the first electromagnetic valve 14 are opened, the variable-frequency refrigerant pump 2 is opened, and meanwhile, the first indoor fan 26, the second indoor fan 29, the third indoor fan 32, the fourth indoor fan 35, the first tail-end electronic expansion valve 25, the second tail-end electronic expansion valve 28, the third tail-end electronic expansion valve 31 and the fourth tail-end electronic expansion valve 34 are started by corresponding numbers according to the indoor refrigeration requirement to meet the indoor refrigeration capacity. The double-system mode is started to meet the refrigerating capacity, so that more energy is saved, and the system can run all the year round. The intelligent control process is briefly explained by fig. 3.
When the refrigerant pump mode is on, the end five electronic expansion valve 37, the end six electronic expansion valve 40, the end seven electronic expansion valve 43, and the end eight electronic expansion valve 46 are closed. Similarly, when the water-cooling multi-connected heat pipe mode is started, the end-one electronic expansion valve 25, the end-two electronic expansion valve 28, the end-three electronic expansion valve 31 and the end electronic expansion valve 34 are closed. For the indoor end equipment of the indoor equipment four 10, the indoor equipment three 11, the indoor equipment two 12 and the indoor equipment one 13, if the variable frequency refrigerant pump mode is operated, the end-one electronic expansion valve 25, the first indoor fan 26 and the end-one 27 in the mode should be operated, and when any one of the equipment is damaged and cannot be operated, the end-five electronic expansion valve 37, the indoor fan 38 and the end-five 39 in the mode of switching the operation water cooling plate are operated. Therefore, the normal operation of the system can be ensured, and the refrigerating capacity can not meet the refrigerating requirement due to the fault of the tail end system.
The overall air conditioning unit operating conditions as shown in fig. 1 are as follows: and detecting the outdoor dry bulb temperature T by the outdoor dry temperature controller to adjust the mode.
1. When the outdoor temperature is below, the first electromagnetic valve 14 and the fifth electromagnetic valve 8 are opened, and the fourth electromagnetic valve 19 and the cold water tank 9 are closed. When the saturation temperature is less than the refrigerant entering the refrigerant pump temperature, the system first opens the second solenoid valve 15 for regulation. When the temperature is higher than the preset temperature, the second electromagnetic valve 15 is closed, the refrigerant passes through the variable frequency refrigerant pump 2, the refrigerant passes through the high pressure sensor 1, passes through the first end electronic expansion valve 25, the second end electronic expansion valve 28, the third end electronic expansion valve 31 and the fourth end electronic expansion valve 34 for throttling, enters the first end 27, the second end 30, the third end 33 and the fourth end 36 of the heat pipe, and the heat pipe at the tail end reaches the 7 filter and the one-way valve 6 by means of the gravity and the density difference of the refrigerant and then enters the air-cooled condenser 5 and the low pressure sensor 3 to complete a refrigeration cycle.
2. When the outdoor temperature is above: the fourth electromagnetic valve 19 and the cold water tank 9 are opened, and the fifth electromagnetic valve 8 and the first electromagnetic valve 14 are closed. The refrigerant is changed 17 through the water cooling plate, throttled by a five-end electronic expansion valve 37, a six-end electronic expansion valve 40, a seven-end electronic expansion valve 43 and an eight-end electronic expansion valve 46, and then enters a five-end 39, a six-end 42, a seven-end 45 and an eight-end 48 of the gravity type heat pipe, the heat pipe at the end adopts a heat pipe, and returns to the water cooling plate to be changed 17 according to the gravity and density difference of the refrigerant, so that a refrigeration cycle is completed. When the temperature reaches, the chilled water enters the cold water pump 22, and a first shockproof lock head 21 and a second shockproof lock head 23 for avoiding the water pump from shaking, and a second cold water pump ball valve 24 and a first cold water pump ball valve 20 for repairing the water pump are respectively arranged at the front and the rear of the cold water pump 22. The chilled water exchanges heat with the refrigerant in the water cooling plate exchanger 17, and then returns to the cold water tank 9 through the water cooling two-way valve and the actuator 18, so as to complete a cold water cycle.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides an energy-conserving air conditioner of combined type, includes that cold water tank (9) and water-cooling board trade (17), its characterized in that: a two-way valve + actuator (18), a first cold water pump ball valve (20), a first shockproof lock head (21), a cold water pump (22), a second shockproof lock head (23) and a second cold water pump ball valve (24) are arranged between the cold water tank (9) and the water cooling plate (17), the first cold water pump ball valve (20), the first shockproof lock head (21), the cold water pump (22), the second shockproof lock head (23) and the second cold water pump ball valve (24) are connected in series, the first cold water pump ball valve (20), the first shockproof lock head (21), the cold water pump (22), the second shockproof lock head (23) and the second cold water pump ball valve (24) are connected in parallel with the two-way valve + actuator (18), the water cooling plate (17) is connected with a fourth electromagnetic valve (19) through a pipeline, and the fourth electromagnetic valve (19) is connected with four indoor equipment (10) and four indoor equipment (10) through a pipeline respectively, The indoor equipment III (11), the indoor equipment II (12), the indoor equipment I (13) and the first electromagnetic valve (14) are connected in parallel, the indoor equipment IV (10), the indoor equipment III (11), the indoor equipment II (12) and the indoor equipment I (13) are connected in parallel, the first electromagnetic valve (14) is connected with the first electromagnetic valve (14) through a pipeline, the first electromagnetic valve (14) is respectively connected with a high-pressure sensor (1), a variable-frequency refrigerant pump (2), a low-pressure sensor (3) and a second electromagnetic valve (15) through pipelines, the high-pressure sensor (1), the variable-frequency refrigerant pump (2) and the low-pressure sensor (3) are connected in series, the second electromagnetic valve (15), the high-pressure sensor (1), the variable-frequency refrigerant pump (2) and the low-pressure sensor (3) are all connected in parallel with the second electromagnetic valve (15), the low-pressure sensor (3) is connected with, air-cooled condenser (5) outside fixed mounting has first outdoor fan (4), just air-cooled condenser (5) have check valve (6) through the pipe connection, check valve (6) have filter (7) through the pipe connection, filter (7) have fifth solenoid valve (8) through the pipe connection, fifth solenoid valve (8) have through the pipe connection trade third solenoid valve (16) of being connected with the water-cooling board (17).
2. The combined type energy-saving air conditioner according to claim 1, characterized in that: indoor unit (13) is including terminal electronic expansion valve (25) and terminal five electronic expansion valve (37) be connected with fourth solenoid valve (19) and first solenoid valve (14), terminal five electronic expansion valve (37) have terminal five (39) through the pipe connection, the outside fixed mounting of terminal five (39) has fifth indoor fan (38), terminal electronic expansion valve (25) have terminal one (27) through the pipe connection, the outside fixed mounting of terminal one (27) has first indoor fan (26).
3. The combined type energy-saving air conditioner according to claim 2, characterized in that: indoor unit two (12) is including terminal two (30) of being connected with terminal one (27), the outside fixed mounting of terminal two (30) has second indoor fan (29), just terminal two (30) have two terminal electronic expansion valve (28) of being connected with terminal electronic expansion valve (25) through the pipe connection, indoor unit two (12) are including terminal six (42) of being connected with terminal five (39), the outside fixed mounting of terminal six (42) has sixth indoor fan (41), just terminal six (42) have terminal six electronic expansion valve (40) of being connected with terminal five electronic expansion valve (37) through the pipe connection.
4. The combined type energy-saving air conditioner according to claim 3, characterized in that: indoor unit three (11) is including the end three (33) of being connected with terminal two (30), the outside fixed mounting of end three (33) has third indoor fan (32), just end three (33) have through pipe connection with terminal three electronic expansion valve (31) of being connected with terminal two electronic expansion valve (28), indoor unit three (11) is including terminal seven (45) of being connected with terminal six (42), the outside fixed mounting of terminal seven (45) has seventh indoor fan (44), just terminal seven (45) have through pipe connection have with terminal seven electronic expansion valve (43) of being connected with terminal six electronic expansion valve (40).
5. The combined type energy-saving air conditioner according to claim 4, characterized in that: indoor unit four (10) is including the end four (36) of being connected with end three (33), the outside fixed mounting of end four (36) has fourth indoor fan (35), just end four (36) have end four electronic expansion valve (34) of being connected with end three electronic expansion valve (31) through the pipe connection, indoor unit four (10) is including the end eight (48) of being connected with end seven (45), the outside fixed mounting of end eight (48) has eighth indoor fan (47), just end eight (48) have end eight electronic expansion valve (46) of being connected with end seven electronic expansion valve (43) through the pipe connection.
6. The combined type energy-saving air conditioner according to claim 5, characterized in that: the fifth electromagnetic valve (8) and the third electromagnetic valve (16) are fixedly connected with the tail end four (36) through pipelines, and the fifth electromagnetic valve (8) and the third electromagnetic valve (16) are fixedly connected with the tail end eight (48) through pipelines.
7. The combined type energy-saving air conditioner according to claim 1, characterized in that: the high-pressure sensor (1), the variable-frequency refrigerant pump (2), the low-pressure sensor (3), the first outdoor fan (4), the air-cooled condenser (5), the one-way valve (6), the filter (7), the fifth electromagnetic valve (8), the third electromagnetic valve (16), the water-cooled plate exchanger (17), the fourth electromagnetic valve (19) and the first electromagnetic valve (14) form a closed loop.
8. The combined type energy-saving air conditioner according to claim 1, characterized in that: a closed loop is formed among the first outdoor fan (4), the air-cooled condenser (5), the one-way valve (6), the filter (7), the fifth electromagnetic valve (8), the third electromagnetic valve (16), the water-cooled plate exchanger (17), the fourth electromagnetic valve (19), the first electromagnetic valve (14) and the second electromagnetic valve (15).
9. The combined type energy-saving air conditioner according to claim 6, characterized in that: and a closed loop is formed among the third electromagnetic valve (16), the water cooling plate exchanger (17), the fourth electromagnetic valve (19), the first tail end electronic expansion valve (25), the first tail end (27), the second tail end (30), the third tail end (33) and the fourth tail end (36).
10. The combined type energy-saving air conditioner according to claim 6, characterized in that: and a closed loop is formed among the third electromagnetic valve (16), the water cooling plate exchanger (17), the fourth electromagnetic valve (19), the electronic expansion valve (37) at the end five, the end five (39), the end six (42), the end seven (45) and the end eight (48).
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| CN202010560701.6A CN111561755A (en) | 2020-06-18 | 2020-06-18 | Combined type energy-saving air conditioner |
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| CN202010560701.6A CN111561755A (en) | 2020-06-18 | 2020-06-18 | Combined type energy-saving air conditioner |
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Application publication date: 20200821 |