CN112344462B - Refrigeration system for introducing outdoor air conditioning system - Google Patents
Refrigeration system for introducing outdoor air conditioning system Download PDFInfo
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- CN112344462B CN112344462B CN202011221151.1A CN202011221151A CN112344462B CN 112344462 B CN112344462 B CN 112344462B CN 202011221151 A CN202011221151 A CN 202011221151A CN 112344462 B CN112344462 B CN 112344462B
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 62
- 238000004378 air conditioning Methods 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 127
- 238000001816 cooling Methods 0.000 claims abstract description 112
- 239000012530 fluid Substances 0.000 claims abstract description 46
- 239000007788 liquid Substances 0.000 claims abstract description 43
- 238000000926 separation method Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 8
- 230000008569 process Effects 0.000 claims abstract description 7
- 239000007921 spray Substances 0.000 claims description 6
- 239000000110 cooling liquid Substances 0.000 claims description 5
- 238000009792 diffusion process Methods 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 230000005855 radiation Effects 0.000 abstract description 29
- 239000007789 gas Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C19/00—Rotary-piston pumps with fluid ring or the like, specially adapted for elastic fluids
- F04C19/002—Rotary-piston pumps with fluid ring or the like, specially adapted for elastic fluids with rotating outer members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C19/00—Rotary-piston pumps with fluid ring or the like, specially adapted for elastic fluids
- F04C19/004—Details concerning the operating liquid, e.g. nature, separation, cooling, cleaning, control of the supply
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C19/00—Rotary-piston pumps with fluid ring or the like, specially adapted for elastic fluids
- F04C19/005—Details concerning the admission or discharge
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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
- F24F11/64—Electronic processing using pre-stored data
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
-
- 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
- F24F5/0089—Systems using radiation from walls or panels
- F24F5/0092—Systems using radiation from walls or panels ceilings, e.g. cool ceilings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C1/00—Direct-contact trickle coolers, e.g. cooling towers
- F28C1/14—Direct-contact trickle coolers, e.g. cooling towers comprising also a non-direct contact heat exchange
-
- 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
-
- 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
-
- 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
- F24F2110/20—Humidity
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
The invention relates to a refrigeration system for introducing an outdoor air conditioning system, which is characterized in that: the water cooling fin structure comprises water cooling fins, wherein water outlets of the water cooling fins are connected with a three-way valve, a first branch of the three-way valve is connected with a plurality of refrigerating impeller pumps which are connected in series, the rear parts of the plurality of refrigerating impeller pumps which are connected in series are connected with a gas-liquid separation chamber, and water outlets of the gas-liquid separation chamber are connected with a fluid inlet of a cooling tower of an air-conditioning system through a third branch; the second branch of the three-way valve is connected with a fluid inlet of the cooling tower; the refrigerating system of the invention can lead outdoor air to enter the room through the air inlet pipe after passing through the refrigerating part, the fluid outlet of the cooling tower of the invention is connected with the indoor radiation system to supply cold water to the radiation system to finish the traditional refrigeration, the water outlet of the radiation system is connected with the refrigerating part, the outdoor air enters the room through the air inlet pipe after passing through the refrigerating part, and the outdoor air is further cooled in the process of leading the outdoor air into the room after the water is processed at low temperature.
Description
The application is a divisional application of an invention patent application with the application date of 2020, 03 and 27, and the application number of 202010227965X, and the name of the invention is 'a system for introducing outdoor air conditioning'.
Technical Field
The invention relates to the technical field of air conditioners, in particular to a refrigerating system for introducing outdoor air conditioning systems.
Background
At present, a ceiling radiation system is used as a refrigerating system to enter a user home more and more, high-price cooling liquid is not used, only water is used as a medium, heat exchange is carried out on an indoor ceiling, and the ceiling radiation system is a comfortable energy-saving air conditioning system.
Disclosure of Invention
It is an object of the present invention to provide a ceiling radiating system that provides a lower temperature. The air conditioning system is provided with a cooling tower, a fluid outlet of the cooling tower is connected with an indoor radiation system, a water outlet of the radiation system is connected with a refrigerating part, and outdoor air enters the room through an air inlet pipe after passing through the refrigerating part.
The refrigeration part comprises a water cooling fin connected with a water outlet of the radiation system, the water outlet of the water cooling fin is connected with a three-way valve, a first branch of the three-way valve is connected with a plurality of refrigeration impeller pumps connected in series, the rear parts of the refrigeration impeller pumps connected in series are connected with a gas-liquid separation chamber, and the water outlet of the gas-liquid separation chamber is connected with a fluid inlet of the cooling tower through a third branch; the second branch of the three-way valve is connected with the fluid inlet of the cooling tower.
The refrigeration impeller pump comprises a rotor and an impeller on the rotor, wherein the rotor also comprises a cylindrical shell which is arranged outside the impeller; the impeller is provided with a plurality of spaced blades which are arranged in a central symmetry way; a support shaft with an internal duct passes through the rotor, said support shaft being mounted eccentrically with respect to the axis of symmetry of the tubular housing, the tubular housing being fixedly coupled to the impeller and arranged to allow its rotation about its support shaft axis, the tubular housing being capable of different speeds by means of a drive; a frame is further arranged and used as rigid fixing equipment for fixing the supporting shaft; the cylindrical shell contains liquid, and the liquid forms a liquid piston ring on the inner wall of the cylindrical shell under the action of centrifugal force during the rotation of the impeller, and the tip of a circumferential blade of the impeller, which is far away from the axis, is inserted into the liquid piston ring; the support shaft comprises an inlet guide pipe and an outlet guide pipe, the sectional area of the inlet guide pipe is larger than that of the outlet guide pipe, the support shaft is eccentrically arranged in the cylindrical shell, one end, close to the liquid piston ring, of the support shaft is called a high-pressure end, the end, opposite to the high-pressure end, of the support shaft is a diffusion end, the inlet guide pipe is adjacent to the outlet guide pipe and is located at the high-pressure end of the support shaft, the support shaft further comprises a cooling spray pipe, the cooling spray pipe is arranged at the diffusion end, is arranged in the support shaft and is provided with a plurality of nozzles, and cooling liquid is supplied under pressure.
A plurality of refrigeration impeller pumps are connected in series with the discharge conduit of an upstream refrigeration impeller pump being connected to the inlet conduit of a downstream refrigeration impeller pump.
The water distribution assembly sprays water downwards to the internal circulation heat exchanger, and the water is cooled and then supplied to the external circulation heat exchanger by the pump and enters the water distribution assembly again; the external circulation heat exchanger comprises a plurality of fins, the plurality of fins are arranged in a shell, liquid to be cooled outside enters the plurality of fins from a fluid inlet and returns from a fluid outlet, and external circulation water in the plurality of fins and circulation water in the cooling tower are subjected to heat exchange in the shell.
The cooling tower is characterized in that an air cooling device, namely an air supply fan and an air outlet, is also arranged in the shell of the cooling tower, the air supply fan and the air outlet are communicated with the inner cavity of the shell through a control valve, the air supply fan can directly introduce the air outside the cooling tower into the external circulation heat exchanger to exchange heat with external circulation water, and the air cooling device is selected from a pump for use.
The indoor temperature sensor and the indoor humidity sensor are arranged indoors, and the outdoor temperature sensor and the outdoor humidity sensor are arranged on the outer wall of the cooling tower.
An air supply method of an air conditioning system for introducing outdoor air uses the air conditioning system for introducing outdoor air, and the operation is as follows:
s1, judging whether the indoor temperature and humidity are higher than a preset temperature T and a preset humidity H; if so, go to S2; if not, ending;
s2, judging whether the difference value of the indoor temperature and the outdoor temperature is larger than a preset temperature difference value threshold value delta T and a preset humidity difference value threshold value delta H or not; if yes, go to S3, if no, go to S4;
s3, a pump of the cooling tower works, an internal circulation heat exchanger is used for cooling water passing through an external circulation heat exchanger in a circulating manner, a fluid outlet of the cooling tower is connected with a radiation system in a room, a water outlet pipe of the radiation system is connected with a water-cooling fin, cold water prepared by the cooling tower firstly enters the radiation system to pre-cool the room and then returns to the water-cooling fin, outdoor air enters the water-cooling fin to be subjected to cooling treatment, outdoor air further enters a plurality of refrigeration impeller pumps which are connected in series to further perform continuous refrigeration of cooling and depressurization, then gas-liquid mixed fluid enters a gas-liquid separation chamber to be separated, gas enters the room, and water returns to a fluid inlet of the cooling tower to be further treated;
and S4, an air supply fan and an air outlet of the cooling tower work, the cooling tower is cooled by air in the external circulation heat exchanger, a fluid outlet of the cooling tower is connected with a radiation system in a room, a water outlet pipe of the radiation system is connected with a water-cooling fin, cold water prepared by the cooling tower firstly enters the radiation system to pre-cool the room and then returns to the water-cooling fin, outdoor air enters the water-cooling fin to be cooled, and then returns to the fluid inlet of the cooling tower through a three-way valve.
Compared with the prior art, beneficial effect:
1) the fluid outlet of the cooling tower is connected with an indoor radiation system to supply cold water to the radiation system to finish traditional refrigeration, the water outlet of the radiation system is connected with a refrigerating part, outdoor air enters the room through an air inlet pipe after passing through the refrigerating part, and the outdoor air is further cooled in the process of introducing the outdoor air into the room after being treated at low temperature. Particularly, the refrigeration part is creatively provided with refrigeration impeller pumps which can be connected in series in multiple stages and flexibly arranged, and after the series stage number of the refrigeration impeller pumps is determined according to the requirement of the refrigeration effect, wind enters the refrigeration impeller pumps and then is continuously cooled and refrigerated. And the refrigeration impeller pump structure of multistage series connection has replaced traditional centrifugal fan, because the next refrigeration impeller pump in a plurality of refrigeration impeller pumps can further compress and pull the suction air on the basis of the previous refrigeration impeller pump, is the structure of locking the wind simultaneously, accomplishes the air supply while refrigerating, therefore, the wind has sufficient power to get into indoor and accomplishes the refrigeration.
2) The cooling tower which can be switched according to the air temperature is used, and only air cooling heat exchange needs to be started on the premise that the temperature difference between the indoor space and the outdoor space is not large and excessive refrigeration is not needed, so that the electric energy is saved; the use of electric energy can be greatly reduced by selecting whether a multistage serial cold impeller pump is adopted according to objective refrigeration requirements.
The system comprises a first branch, a second branch, a third branch, a control device and a control device, wherein the first branch is connected with the second branch through the first branch; the control device comprises a valve body with a first cavity and a second cavity, a first water outlet and a second water outlet which are arranged on the valve body and communicated with the first cavity or the second cavity, a first water inlet and a second water inlet which are arranged on the valve body and communicated with the first cavity, and a third water inlet communicated with the first cavity and the second cavity; the second water inlet, the first chamber, the third water inlet, the second chamber and the second water outlet form a first control channel for controlling the opening and closing of the third branch, and the first water inlet, the first chamber and the first water outlet form a second control channel for controlling the opening and closing of the second branch; and valve cores which are driven by the electromagnetic assemblies and are respectively used for opening or closing the first control channel and the second control channel are arranged in the first cavity and the second cavity.
Furthermore, the valve core comprises a first valve core arranged in the first cavity and a second valve core arranged in the second cavity, a first spring fixedly connected with the inner wall of the first cavity is arranged at one end, far away from the first water outlet, of the first valve core, and a second spring fixedly connected with the inner wall of the second cavity is arranged at one end, far away from the third water inlet, of the second valve core; the electromagnetic assembly is an electromagnetic coil wound on the valve body and used for controlling the second valve core.
By adopting the technical scheme, the advantages are that: the second branch and the third branch can be controlled, more specifically: the two branches (namely, the second branch and the third branch, the same below) can be controlled simultaneously by using one device, so that the purpose of saving energy is achieved (although the second branch and the third branch can be controlled by different valves in a seemingly simple way, the flow control of the two branches is extremely difficult, the application can achieve the purpose and the effect of a plurality of devices by using one device, and the device is more convenient and accurate in the using process and the subsequent maintenance process, and can also greatly reduce energy consumption);
furthermore, although the present application only uses one device to achieve the purpose of controlling two branches simultaneously, the effect of the flow control is beyond the traditional two "control components" (e.g. valves), such as: the control device is provided with two chambers (namely a first chamber and a second chamber, the same below), and two first control channels and two second control channels which can carry out interaction are formed in the valve body by utilizing the valve cores arranged in the chambers, so that the use effect of the air conditioning system in different seasons (even the same season and different air temperatures) can be enhanced.
Drawings
FIG. 1 is a schematic front cross-sectional view of a refrigeration vane pump of embodiment 1 of the present invention;
FIG. 2 is a schematic side sectional series view of two refrigeration impeller pumps of example 1 of the present invention;
fig. 3 is a schematic volume-pressure diagram of a refrigerating vane pump of embodiment 1 of the present invention;
FIG. 4 is a schematic view of a cooling tower according to embodiment 1 of the present invention;
fig. 5 is a schematic view of an air conditioning system for outdoor air induction according to embodiment 1 of the present invention;
FIG. 6 is a schematic view of an air conditioning system for introducing outdoor air according to embodiment 2 of the present invention;
fig. 7 is a schematic structural view of the control device in embodiment 2 of the present invention, which is fully enclosed;
fig. 8 is a schematic structural diagram illustrating the opening of a first control channel of the control device in embodiment 2 of the present invention;
fig. 9 is a schematic structural view of the control device in embodiment 2 of the present invention when fully opened;
in the figure: the cooling system 1, the water-cooling fin 2, the gas-liquid separation chamber 21, the three-way valve 22, the air inlet pipe 3, the refrigeration impeller pump 4, the cylindrical housing 41, the inlet duct 42, the gap 43, the discharge duct 44, the nozzle 45, the high-pressure end 46, the diffuser end 47, the cooling nozzle 48, the blades 49, the chamber 5, the cooling tower 6, the blower fan 60, the fluid inlet 61, the fluid outlet 62, the water distribution assembly 63, the internal circulation heat exchanger 64, the external circulation heat exchanger 65, the fins 66, the air outlet 67, the air inlet 68, the pump 69, the control device 70, the valve body 710, the first chamber 711, the second chamber 712, the first water outlet 711a, the second water outlet 712a, the first water inlet 711b, the second water inlet 712b, the third water inlet 713b, the solenoid assembly 74, the valve spool 75, the first valve spool 751, the second valve spool 751, the first spring 751a, the first spring 752a, the second spring 72, and the third branch 73.
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.
Example 1
Referring to fig. 1, fig. 1 shows a schematic sectional view of a refrigeration vane pump, which includes a rotor and an impeller on the rotor, the rotor further includes a cylindrical housing 41, the cylindrical housing 41 is disposed outside the impeller; the impeller is provided with a plurality of spaced blades 49, the blades 49 preferably being symmetrically arranged; a hollow support shaft 40 passes through the rotor, said shaft 40 being mounted eccentrically with respect to the axis of symmetry of a cylindrical housing 41, the cylindrical housing 41 being fixedly coupled to the impeller and arranged to allow its rotation about its support shaft 40 axis, the cylindrical housing 41 being capable of different speeds by suitable drive means. As an illustrative embodiment, embodiment 10 of the present invention operates counterclockwise. A frame (not shown) may additionally be provided as a rigid fixture to receive the support shaft 40. Liquid is injected into the cylindrical housing 41, and during rotation of the impeller, the liquid forms a liquid piston ring on the inner wall of the cylindrical housing 41 under the action of centrifugal force, and the tips of the circumferential blades of the impeller, which are far from the axis, are inserted into the liquid piston ring.
The hollow support shaft 40 includes an inlet conduit 42 for supplying a working fluid to the cylindrical housing 41, and a discharge conduit 44 for discharging a working fluid, and a sectional area of the inlet conduit 42 is larger than a sectional area of the discharge conduit 44, the support shaft 40 is eccentrically installed in the cylindrical housing 41, an end of the support shaft 40 near the liquid piston ring is referred to as a high pressure end, an end of the support shaft 40 opposite to the high pressure end is a diffuser end, the inlet conduit 42 is adjacent to the discharge conduit 44 and is located at the high pressure end of the support shaft 40, and the support shaft 40 further includes a cooling nozzle 48 disposed at the diffuser end, and the cooling nozzle 48 is disposed in the support shaft 40 and supplies a cooling fluid under pressure, and has a plurality of nozzles 45.
In use, the refrigeration impeller pump is arranged to draw working fluid to be refrigerated, such as incoming outdoor air flow, axially into the inlet duct 42 of the support shaft 40 in the embodiment in which the inlet duct 42 is located at the high pressure end 46, and through the gap 43 between a pair of adjacent blades 49 of the rotor impeller, and the support shaft 40 is located closer to the liquid piston rings of the fluid, and the cylindrical housing 41 is arranged such that during rotation of the impeller, the portion of the working fluid is entrained into the diffuser end 47, at which time the spacing of the support shaft 40 from the liquid piston rings is increased to reduce the pressure of the incoming outdoor air flow, thereby generating a motive force for drawing further incoming outdoor air flow from the inlet duct 42 and cooling the same by the cooling liquid sprayed from the cooling nozzle 48. Then, the cooled air flow introduced into the outdoor space is pushed by the blades to enter the high-pressure end again, the volume of the air flow is obviously reduced, and the air flow enters the discharge conduit 44 in a high-pressure mode.
Preferably, there may be a plurality of refrigeration vane pumps connected in series, and the discharge conduit 44 of the upstream refrigeration vane pump is connected to the downstream intake conduit 42, and since the cooling liquid, and most of the time water, is introduced during the refrigeration process, only at a relatively low temperature, the thickness of the liquid piston inside the cylindrical housing 41 will increase, and in order to maintain the thickness of the liquid piston constant and thereby provide a stable pressure for introducing the outdoor air stream, excess water or other working fluid will be discharged from the discharge conduit 44 together with the compressed air and will be introduced into the downstream intake conduit 42 of the refrigeration vane pump when connected in series.
It will be understood by those skilled in the art that the number of stages of the refrigerating impeller pumps connected in series can be flexibly set according to the actual cooling and air supply pressures, and a plurality of refrigerating impeller pumps can be used with the same or different diameters of the cylindrical housing 41 and can provide the pressure of the compressed air supply continuously introduced into the outdoor air flow. At this time, the introduced outdoor air flow enters the duct 42 through the gaps between the water-cooled fins 2, and the water discharged from the water-cooled fins 2 enters the cooling nozzle 48 to be more heat-exchanged with the air so as to obtain a lower gas temperature.
For the refrigeration vane pump of fig. 1 or fig. 2, which shows the principle of the pressure-volume relationship in ideal thermodynamics in fig. 3, the treatment of the working fluid in the embodiment will be described here.
Figure 3 shows the working fluid circulating through the ideal pressure-volume, using four points ABCDEF to form a closed loop, increasing the pressure and volume of the working fluid from point a to point D, indicated by the pair, from D, E, F to a if the cooling gas is from high temperature and high pressure to reduced temperature and pressure, when the flow of incoming outdoor air once enters the refrigeration impeller pump, it is high temperature and high pressure gas, then after the diffusion zone is cooled, the same volume of air drops from E to point F, then from point F to pressure and back to point a, at which time the flow of incoming outdoor air becomes reduced temperature and pressure gas, and at the same time the water content in the gas also decreases, more suitable for the comfort of human body.
Fig. 4 shows a cooling tower 6 of the present invention for cooling the discharged water of the refrigeration impeller pump. The cooling tower 6 has an internal circulation heat exchanger 64 and an external circulation heat exchanger 65 inside.
The internal circulation heat exchanger 64 is used for cooling the cooling water supplied to the external circulation heat exchanger 65 in a circulating manner, the internal circulation heat exchanger 64 receives the cold air outside 6 of the cooling tower 6 through the air inlet 68, and the cold air crosses the internal circulation heat exchanger 64 after the heat exchange is completed by the internal circulation heat exchanger 64 and is discharged out of the cooling tower upwards through the fan. Inside cooling tower 6, water distribution assembly 63 typically sprays water down to internal circulation heat exchanger 64, which is cooled by pump 69 to external circulation heat exchanger 65 and re-enters water distribution assembly 63.
The external circulation heat exchanger 65 is generally formed by a plurality of fins 66, the plurality of fins 66 being housed in the casing, and the water to be cooled externally entering the plurality of fins 66 from the fluid inlet 61 and returning from the fluid outlet 62. Inside the casing, the circulating water outside the plurality of fins 66 exchanges heat with the circulating water inside the cooling tower 6.
Meanwhile, the shell is also internally provided with an air cooling device, namely an air supply fan 60 and an air outlet 67, wherein the air supply fan 60 and the air outlet 67 are communicated with the inner cavity of the shell through control valves. The blower fan 60 can introduce air outside the cooling tower 6 directly into the external circulation heat exchanger 65 to exchange heat with external circulation water.
As shown in fig. 5, an air conditioning system introducing outdoor air is provided, which comprises a cooling tower 6, a fluid outlet 62 of the cooling tower 6 is connected with a radiation system 1 in a room, a water outlet pipe of the radiation system 1 is connected with a water cooling fin 2, cold water prepared by the cooling tower 6 firstly enters the radiation system 1 to pre-cool the room and then returns to the water cooling fin 2, the air outside the room enters the water cooling fin 2 to be cooled, outdoor air further enters a plurality of refrigeration impeller pumps connected in series to further cool and depressurize continuously for refrigeration, then a gas-liquid mixed fluid enters a gas-liquid separation chamber 21 to be separated, gas enters the room, and liquid, namely water, returns to a fluid inlet 61 of the cooling tower 6 to be further processed. A three-way valve is arranged between the water-cooling fin 2 and a plurality of refrigeration impeller pumps connected in series, and a lead-out branch of the three-way valve is directly returned to a fluid inlet 61 of the cooling tower 6.
An indoor temperature sensor and an indoor humidity sensor are arranged indoors, and an outdoor temperature sensor and an outdoor humidity sensor are arranged on the outer wall of the cooling tower 6.
In the use of the air conditioning system for introducing outdoor air, the specific operation is as follows:
s1, judging whether the indoor temperature and humidity are higher than a preset temperature T and a preset humidity H; if so, go to S2; if not, ending;
s2, judging whether the difference value of the indoor temperature and the outdoor temperature is larger than a preset temperature difference value threshold value delta T and a preset humidity difference value threshold value delta H or not; if yes, executing S3, and if not, executing S4;
s3, a pump 69 of the cooling tower 6 works, an internal circulation heat exchanger 64 is used for cooling water supplied to an external circulation heat exchanger 65 in a circulating manner, the internal circulation heat exchanger 64 receives cold air on the outer side 6 of the cooling tower 6 through an air inlet 68, the cold air crosses the internal circulation heat exchanger 64 after heat exchange is completed through the internal circulation heat exchanger 64 and is discharged out of the cooling tower upwards through a fan, an air supply fan 60 and an air outlet 67 do not work, a fluid outlet 62 of the cooling tower 6 is connected with a radiation system 1 in a room, a water outlet pipe of the radiation system 1 is connected with water-cooling fins 2, cold water prepared by the cooling tower 6 firstly enters the radiation system 1 to pre-cool the room and then returns to the water-cooling fins 2, the outdoor air enters the water-cooling fins 2 to be cooled, outdoor air further enters a plurality of refrigeration impeller pumps connected in series to further perform continuous cooling and depressurization, and then the gas-liquid mixed fluid enters a gas-liquid separation chamber 21 to be separated, gas enters the chamber and liquid water, i.e. water, is returned to the fluid inlet 61 of the cooling tower 6 for further treatment;
s4, a pump 69 of the cooling tower 6 does not work, the air supply fan 60 and the air outlet 67 work, air cooling is carried out in the external circulation heat exchanger 65, the fluid outlet 62 of the cooling tower 6 is connected with the radiation system 1 in a room, the water outlet pipe of the radiation system 1 is connected with the water cooling fins 2, cold water prepared by the cooling tower 6 firstly enters the radiation system 1 to pre-cool the room, then returns to the water cooling fins 2, carries out cooling treatment after outdoor air enters the water cooling fins 2, and then returns to the fluid inlet 61 of the cooling tower 6 through the three-way valve 23.
Therefore, in spring or autumn, under the condition that the indoor and outdoor temperature difference is not particularly large, the circulating refrigeration is started without using a refrigeration impeller pump; in addition, in summer, a large circulation is used, and a refrigeration impeller pump is used for refrigeration.
Example 2 is different from example 1 in that
Referring to fig. 6, an air conditioning system with introduced outdoor air has a cooling tower 6, a fluid outlet 62 of the cooling tower 6 is connected to a radiation system 1 in a room, a water outlet pipe of the radiation system 1 is connected to a water cooling fin 2, cold water produced by the cooling tower 6 enters the radiation system 1 to pre-cool the room, then returns to the water cooling fin 2, the outdoor air enters the water cooling fin 2 to be cooled, the outdoor air further enters a plurality of refrigeration impeller pumps 4 connected in series to further cool and depressurize continuously for refrigeration, then a gas-liquid mixed fluid enters a gas-liquid separation chamber 21 to be separated, the gas enters a room 5, and the liquid, that is, the water returns to a fluid inlet 61 of the cooling tower 6 to be further processed. Between the water-cooled fins 2 and the plurality of refrigeration vane pumps connected in series, there is a three-way valve 22, the three-way valve 22 branching off and returning the water to the fluid inlet 61 of the cooling tower 6.
The gas-liquid separation chamber 21 communicates with the fluid inlet 61 through a third branch 73, and the three-way valve 22 leads the branch of the water returning to the fluid inlet 61 of the cooling tower 6 to be a second branch 72.
Referring to fig. 6-7, the device further includes a control device 70 for controlling the opening and closing of the second branch 72 and the third branch 73; the control device 70 comprises a valve body 710 with a first chamber 711 and a second chamber 712, a first water outlet 711a and a second water outlet 712a which are arranged on the valve body 710 and communicated with the first chamber 711 or the second chamber 712, a first water inlet 711b and a second water inlet 712b which are arranged on the valve body 710 and communicated with the first chamber 711, and a third water inlet 713b communicated with the first chamber 711 and the second chamber 712; the second water inlet 712b, the first chamber 711, the third water inlet 713b, the second chamber 712 and the second water outlet 712a form a first control channel for controlling the opening and closing of the third branch 73, and the first water inlet 711b, the first chamber 711 and the first water outlet 711a form a second control channel for controlling the opening and closing of the second branch 72; disposed within the first and second chambers 711 and 74 are valve spools 75 that are driven by the solenoid assembly 74 and are used to open or close the first and second control passages, respectively.
Further, the valve core 75 comprises a first valve core 751 arranged in the first chamber 711 and a second valve core 752 arranged in the second chamber 712, wherein a first spring 751a fixedly connected with the inner wall of the first chamber 711 is arranged at one end of the first valve core 751, which is far away from the first water outlet 711a, and a second spring 752a fixedly connected with the inner wall of the second chamber 712 is arranged at one end of the second valve core 752, which is far away from the third water inlet 713 b; the solenoid assembly 74 is an electromagnetic coil wound on the valve body 710 and used to control the second spool 752.
Further, the solenoid coil can only be used for controlling the second valve core 752, and the first valve core 751 is opened based on the second valve core 752, so that after the first control channel is opened, the spring cavity of the first spring 751a is decompressed, and the first valve core 751 is pushed open by water flowing in through the first water inlet 711b, thereby completing the opening of the second control channel.
Further, the three-way valve 22 guides the water to return to the cooling tower 6 to enter from the first water inlet 711b, and the water discharged from the gas-liquid separation chamber 21 enters from the second water inlet 712 b.
The principle of the control device is as shown in fig. 7-9;
taking summer as an example, the summer is also divided into early summer, full summer and late summer, and the temperature of the early summer and the late summer is generally lower than that of the full summer, so that the large circulation can be used only in the full summer (namely, the water discharged from the gas-liquid separation chamber enters the first control channel through the third branch and further enters the fluid inlet), and the large circulation and the small circulation can be used simultaneously in the early summer or the late summer, namely: (water discharged from the gas-liquid separation chamber and the water-cooling fins returns to the fluid inlet through the third branch and the second branch respectively), and can be realized by adjusting the opening of the three-way valve in the using process;
firstly, when in full summer, the three-way valve is adjusted to be full open, water discharged by the water-cooling fins completely enters the refrigeration impeller pump for refrigeration, and forms low-temperature 'cold air' to enter a room, at the moment, a second water inlet of the control device (namely, a valve body) is filled with water, the electromagnetic coil is electrified when the control device is used, the second valve core compresses a second spring through attraction after the electromagnetic coil is electrified, a third water inlet is opened, and the water entering the second water inlet enters the cooling tower for refrigeration through the first control channel and a third branch (not only in the embodiment, a plurality of second water outlets are arranged, the heat exchange efficiency of the air conditioning system can be improved, and the low-temperature cold air can be provided for the room when in full summer);
secondly, in early summer or late summer, the three-way valve is adjusted to be half-open (namely, one part of water is sent into the gas-liquid separation chamber, the other part of water is sent to the first water inlet), when the three-way valve is used, the electromagnetic coil is electrified, the second valve core firstly leaves the third water inlet, the first control channel is opened, the water in the first control channel starts to flow, the first chamber (namely, the spring cavity of the first spring) is decompressed, when the first water inlet enters water, the first valve core is jacked up (namely, the second spring is compressed), so that the first water outlet is opened, the second control channel is opened, the water in the second branch starts to circulate, at the moment, the water in the second branch and the water in the third branch can be ensured to circulate, the aim of providing cold air into the chamber can be achieved, and in the state, the water amount entering the refrigeration impeller pump is lower than that in the 'summer filling', it provides indoor cold wind just right, can also directly send into the cooling tower with other water in, it not only can reduce the energy consumption of refrigeration impeller pump, can also carry out accurate control to the discharge of second branch road and third branch road, and then improves this air conditioning system's practicality.
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 (3)
1. A refrigeration system for introducing outdoor air conditioning systems, comprising: the water cooling device comprises water cooling fins (2), wherein water outlets of the water cooling fins are connected with a three-way valve (22), a first branch of the three-way valve is connected with a plurality of refrigeration impeller pumps which are connected in series, the rear parts of the refrigeration impeller pumps which are connected in series are connected with a gas-liquid separation chamber (21), and a water outlet of the gas-liquid separation chamber (21) is connected with a fluid inlet (61) of a cooling tower (6) of an air-conditioning system through a third branch (73); the second branch (72) of the three-way valve is connected with the fluid inlet (61) of the cooling tower (6).
2. A refrigeration system for an outdoor air conditioning system according to claim 1, further comprising: the refrigeration impeller pump comprises a rotor and an impeller on the rotor, the rotor also comprises a cylindrical shell (41), and the cylindrical shell (41) is arranged outside the impeller; the impeller is provided with a plurality of spaced blades (49), and the blades (49) are arranged in a central symmetry manner; a support shaft (40) with an internal pipe passes through the rotor, said support shaft (40) being mounted eccentrically with respect to the axis of symmetry of a cylindrical housing (41), the cylindrical housing (41) being fixedly coupled to the impeller and arranged to allow its rotation about its support shaft (40) axis, the cylindrical housing (41) being capable of different speeds by means of a drive; a frame is also provided as a rigid fixing device to fix the support shaft (40); liquid is contained in the cylindrical shell (41), and in the rotating process of the impeller, the liquid forms a liquid piston ring on the inner wall of the cylindrical shell (41) under the action of centrifugal force, and the tip of a circumferential blade of the impeller, which is far away from the axis, is inserted into the liquid piston ring; the support shaft (40) comprises an inlet guide pipe (42) and an outlet guide pipe (44), the cross section area of the inlet guide pipe (42) is larger than that of the outlet guide pipe (44), the support shaft (40) is eccentrically installed in the cylindrical shell (41), one end, close to a liquid piston ring, of the support shaft (40) is called a high-pressure end, the end, opposite to the high-pressure end, of the support shaft (40) is a diffusion end, the inlet guide pipe (42) and the outlet guide pipe (44) are adjacent to each other and are located at the high-pressure end of the support shaft (40), the support shaft (40) further comprises a cooling spray pipe (48) arranged at the diffusion end, and the cooling spray pipe (48) is arranged in the support shaft (40) and provided with a plurality of nozzles and supplies cooling liquid under pressure.
3. A refrigeration system for an outdoor air conditioning system, as recited in claim 2, further comprising: a plurality of refrigeration impeller pumps are connected in series with the discharge conduit (44) of an upstream refrigeration impeller pump being connected to the downstream inlet conduit (42).
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| CN202011221151.1A CN112344462B (en) | 2020-03-27 | 2020-03-27 | Refrigeration system for introducing outdoor air conditioning system |
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| CN202011221151.1A CN112344462B (en) | 2020-03-27 | 2020-03-27 | Refrigeration system for introducing outdoor air conditioning system |
| CN202010227965.XA CN111412566B (en) | 2020-03-27 | 2020-03-27 | Air conditioning system for introducing outdoor air |
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| CN202010227965.XA Division CN111412566B (en) | 2020-03-27 | 2020-03-27 | Air conditioning system for introducing outdoor air |
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| CN202011221555.0A Withdrawn CN112344463A (en) | 2020-03-27 | 2020-03-27 | Cooling tower for introducing outdoor air conditioning system |
| CN202010227965.XA Active CN111412566B (en) | 2020-03-27 | 2020-03-27 | Air conditioning system for introducing outdoor air |
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| CN201191049Y (en) * | 2008-04-10 | 2009-02-04 | 西安工程大学 | Radiation air conditioning system based on recycling wet cooling tower and cold/heat sources of ground source heat pump |
| CN201322391Y (en) * | 2008-10-20 | 2009-10-07 | 徐国风 | Central air conditioner energy-saving system |
| CN201740138U (en) * | 2010-06-04 | 2011-02-09 | 西安工程大学 | Capillary tube radiation air conditioner |
| US20120087808A1 (en) * | 2010-10-11 | 2012-04-12 | General Electric Company | Liquid ring compressors for subsea compression of wet gases |
| US9004463B2 (en) * | 2012-12-17 | 2015-04-14 | Baltimore Aircoil Company, Inc. | Cooling tower with indirect heat exchanger |
| MA40693A (en) * | 2014-06-24 | 2017-05-02 | Amirhossein Eshtiaghi | ENERGY EXTRACTION APPARATUS AND METHOD |
| KR101770258B1 (en) * | 2015-08-04 | 2017-08-22 | (주)티원엔지니어링 | Air conditioning system for maintaining constant temperature and humidity |
| CN205373440U (en) * | 2015-12-17 | 2016-07-06 | 华电莱州发电有限公司 | Condenser evacuation economizer system of thermal power factory |
| CN205842912U (en) * | 2016-06-12 | 2016-12-28 | 河北力科纺织有限责任公司 | A kind of weaving power houses heat sink |
| EP3471782A1 (en) * | 2016-06-17 | 2019-04-24 | Sterifre Medical Inc. | Sterilization, disinfection, sanitization, decontamination, and therapeutic devices, systems, and methods |
| CN206131273U (en) * | 2016-10-18 | 2017-04-26 | 深圳沃海森科技有限公司 | Alternative air conditioner of bathroom changes in temperature gas of multiplicable oxygen concentration |
| US10132569B2 (en) * | 2017-03-21 | 2018-11-20 | SPX Technologies, Inc. | Hybrid fluid cooler with extended intermediate basin nozzles |
| US11029093B2 (en) * | 2017-03-30 | 2021-06-08 | Baltimore Aircoil Company, Inc. | Cooling tower with direct and indirect heat exchanger |
| CN207751094U (en) * | 2017-09-27 | 2018-08-21 | 清华大学 | A kind of air-conditioning system carrying out load rating processing using natural energy resources |
| CN111183327B (en) * | 2017-10-10 | 2021-09-03 | 三菱电机株式会社 | Refrigeration cycle device |
| CN208702701U (en) * | 2018-07-11 | 2019-04-05 | 上海祺登电子有限公司 | A kind of vacuum pump cooling device |
| CN208939764U (en) * | 2018-08-30 | 2019-06-04 | 四川宏华电气有限责任公司 | A kind of motor evaporation cooling construction |
| CN208998230U (en) * | 2018-09-06 | 2019-06-18 | 中国科学院工程热物理研究所 | Across the season cold-storage whole year cooling system of one kind |
| CN209385341U (en) * | 2019-01-05 | 2019-09-13 | 上海述云智能科技有限公司 | A kind of energy conserving system for cold and hot vacuum system |
| CN109945354B (en) * | 2019-01-25 | 2021-07-09 | 东南大学 | Household radiation cooling and heating and fresh air efficient integrated processing device and operation method |
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2020
- 2020-03-27 CN CN202011221151.1A patent/CN112344462B/en active Active
- 2020-03-27 CN CN202011221555.0A patent/CN112344463A/en not_active Withdrawn
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| CN111412566A (en) | 2020-07-14 |
| CN111412566B (en) | 2021-02-05 |
| CN112344462A (en) | 2021-02-09 |
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Denomination of invention: A refrigeration system that introduces outdoor air conditioning systems Granted publication date: 20220513 Pledgee: CITIC Bank Co.,Ltd. Guangzhou Branch Pledgor: Guangdong haiqinyuan Information Technology Co.,Ltd. Registration number: Y2024980022445 |