CN107401786B - Evaporation type condensation temperature regulating equipment and defrosting method thereof - Google Patents

Evaporation type condensation temperature regulating equipment and defrosting method thereof Download PDF

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Publication number
CN107401786B
CN107401786B CN201710365702.3A CN201710365702A CN107401786B CN 107401786 B CN107401786 B CN 107401786B CN 201710365702 A CN201710365702 A CN 201710365702A CN 107401786 B CN107401786 B CN 107401786B
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water
evaporation
way reversing
inlet
reversing valve
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CN107401786A (en
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倪仁建
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Zhuji Feimante Environmental Protection Equipment Co ltd
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Zhuji Feimante Environmental Protection Equipment Co ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00Air-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
    • F24F5/0007Air-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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00Air-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
    • F24F5/0007Air-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
    • F24F5/0035Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using evaporation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B47/00Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02Defrosting cycles
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2347/00Details for preventing or removing deposits or corrosion
    • F25B2347/02Details of defrosting cycles
    • F25B2347/021Alternate defrosting

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Removal Of Water From Condensation And Defrosting (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The invention provides an evaporative condensing temperature regulating device and a defrosting method thereof, and belongs to the technical field of refrigeration. The water pump blockage device solves the technical problems that the cooling water of the existing evaporative cooling air conditioner is small in temperature reduction, the water tank is easy to accumulate ash, the water pump is blocked, and the like. The water collecting device comprises a frame, wherein a lower chamber and an evaporation chamber positioned above the lower chamber are arranged on the frame, an evaporation heat dissipation mechanism and a water distribution mechanism are arranged on the evaporation chamber, a water collecting and recycling mechanism is arranged in the lower chamber, the water distribution mechanism, the evaporation heat dissipation mechanism and the water collecting and recycling mechanism are connected in series to form a circulating loop, a filter screen is arranged in a water collecting tank, and a flow guiding structure is arranged on a water receiving disc. The invention has the advantages of effectively preventing the water pump from being blocked, greatly increasing the cooling degree of the coolant and reducing the power of the compressor.

Description

Evaporation type condensation temperature regulating equipment and defrosting method thereof
Technical Field
The invention belongs to the technical field of refrigeration equipment, and relates to evaporative condensation temperature adjusting equipment and a defrosting method thereof.
Background
The low carbon environment-friendly is the main melody of the current world, the energy conservation and emission reduction are important in sustainable development, the prior energy consumption is saved, the unnecessary energy waste is reduced, and the key is that the energy conservation and environment-friendly efficiency of energy consumption equipment is improved. In the production and daily life of enterprises, the energy consumption of the refrigeration equipment is high, in the general production enterprises, the energy consumption of the refrigeration equipment is more than 20%, the energy consumption of the office building refrigeration equipment can be more than 50%, and the effective energy conservation of the refrigeration equipment has great significance on energy conservation and emission reduction. In the prior art, a water circulation system is often used for fully cooling the refrigerant, and a closed water cavity is adopted in a heat exchanger for fully cooling the refrigerant passing through the heat exchanger.
For example, chinese patent literature discloses an energy-saving air conditioning system [ application number: 201110357887.6 it includes air circulation loop, variable-frequency ice water circulation loop, variable-frequency cold water circulation loop and control center. The control center can dynamically change and adjust the efficiency of the air circulation loop and the cold water circulation loop according to the ambient temperature. The variable-frequency cooling water loop comprises a cooling fan cooling water outlet pipeline and a cooling water return pipeline, high-temperature cooling water after absorbing heat is sent to the cooling fan to exchange heat with the outside, and cooling water is sent to the condenser to exchange heat with a refrigerant.
In the scheme, through water circulation cooling, the cooling speed of the coolant is increased and the temperature reduction of the coolant is increased to a certain extent in a physical dispersion mode, but the cooling water is cooled only through the cooling fan when being cooled, so that the cooling rate of the cooling water is slow, and the cooling rate of the coolant is directly influenced. Meanwhile, in the recycling process of the cooling water, impurities are inevitably led into the water tank through the cooling fan to pollute the cooling water, and accumulated ash and even massive impurities can cause blockage of the cooling water circulating pump.
When heating, the outdoor heat exchange plate is extremely low in temperature, and frosting is easy to cause, and the heat exchange effect of the refrigerant is affected, so that the compressor is required to provide higher working efficiency, energy waste is caused, and a self-defrosting function is also indispensable.
Disclosure of Invention
The object of the present invention is to provide an evaporative condensing temperature regulating device, which addresses the above-mentioned problems.
The object of the present invention is to provide a defrosting method of an evaporative condensing temperature adjusting apparatus, aiming at the above problems.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the utility model provides an evaporation type condensation temperature regulation equipment, includes the frame, is equipped with the lower cavity and is located the evaporation chamber on the lower cavity in the frame, the evaporation chamber on be equipped with evaporation heat dissipation mechanism and can be to evaporation heat dissipation mechanism water distribution mechanism, the lower cavity in be equipped with the water catch basin that can retrieve the water that flows through evaporation heat dissipation mechanism, evaporation heat dissipation mechanism and water catch basin establish ties and form circulation loop, circulation loop on concatenate circulating water pump, circulation loop with set up heat exchanger in the lower cavity link to each other and can carry out heat exchange through heat exchanger and refrigerant circuit, water catch basin that is located the lower cavity including being located the water catch basin of water catch basin top be equipped with and be located evaporation heat dissipation mechanism below, be equipped with the filter screen that can separate the water catch basin into water purification district and recovery district in the water catch basin, the water catch basin on be equipped with the water guide structure that can retrieve the water that flows through evaporation heat dissipation mechanism to the recovery district, the water purification district be equipped with the play water structure that is connected in circulation loop.
In the evaporation type condensation temperature adjusting device, the flow guiding structure comprises a water blocking surrounding edge which is provided with a water passing notch and can prevent water from entering the water purifying area, and the water blocking surrounding edge is arranged at the opening of the top of the water collecting tank and is communicated with the recovery area; the water outlet structure comprises a water outlet arranged in the water purifying area and a ball float valve which is arranged in the water purifying area and can control the water outlet to be opened or closed.
In the evaporation type condensation temperature adjusting device, the water collecting and recycling mechanism further comprises an overflow pipe arranged on the water collecting tank, an overflow hole of the overflow pipe is higher than the water receiving disc, an overflow sensor and an overflow electromagnetic valve are sequentially arranged on the overflow pipe from inside to outside, and when the overflow sensor detects data, the overflow electromagnetic valve can be opened, so that the overflow pipe is in a passage state.
In the evaporation type condensation temperature regulating device, a drain pipe is arranged at the bottom of the recovery area, and a drain electromagnetic valve is arranged on the drain pipe; the circulating loop is also connected with a water supplementing pipe for supplementing water to the circulating loop.
In the above-mentioned evaporative condensation temperature regulation apparatus, the said evaporative heat dissipation mechanism includes several evaporating plates used for increasing the evaporation area and accelerating the evaporation room air flow and forming the negative pressure blower, the said evaporating plate is connected to stander removably, every evaporating plate and negative pressure blower enclose into the said evaporation room; the evaporation plate comprises an evaporation plate frame, wet curtain paper stacking filled with the evaporation plate frame is arranged in the evaporation plate frame, an outer cover is arranged on the side surface, far away from the evaporation chamber, of the evaporation plate frame, a filtering baffle plate is arranged between the outer cover and the evaporation plate frame, and a water inlet groove and a water outlet groove are respectively arranged at the upper end and the lower end of the evaporation plate frame; the water distribution mechanism comprises a water supply pipe penetrating the water collection tank and extending upwards to the evaporation chamber, a plurality of water distribution pipes connected end to end are connected to the water supply pipe, the water distribution pipes are arranged in the water inlet tank, and the lower end of the water supply pipe penetrates out of the evaporation chamber and is connected with the circulating water pump.
In the above-mentioned evaporative condensing temperature regulating device, the refrigerant circuit is connected to the heat exchanger and is capable of exchanging heat with the circulation circuit through the heat exchanger; the refrigerant loop comprises a compressor, a first four-way reversing valve, a second four-way reversing valve, an oil, gas and liquid separator, a one-way valve, a drying filter, a first four-way valve, a second four-way valve, a first outdoor heat exchanger and a second outdoor heat exchanger; the outlet of the compressor is connected with the inlet of oil, the liquid outlet of the oil is connected with the inlet D of a first four-way reversing valve, the oil outlet of the oil and the outlet of a gas-liquid separator are connected with the inlet of the compressor, the C port of the first four-way reversing valve is connected with the inlet of a heat exchanger, the E port of the first four-way reversing valve is connected with the inlet D of a second four-way reversing valve, the outlet of the heat exchanger is connected with one end of a drying filter through a one-way valve, the other end of the drying filter is connected with an electromagnetic valve, an unloading valve and a throttle valve in parallel, the electromagnetic valve is connected with the inlet of a first outdoor heat exchanger, the outlet of the first outdoor heat exchanger is connected with the E port of a second four-way reversing valve, the throttle valve is connected with the first interface of the second outdoor heat exchanger, the second interface of the second outdoor heat exchanger is connected with the C port of the second four-way reversing valve, the unloading valve is connected with the gas-liquid separator, and the S port of the first four-way reversing valve and the second reversing valve are connected with the gas-liquid separator in parallel; when the refrigerating state is in the refrigerating state, an inlet D and a C of the first four-way reversing valve are communicated, an S and an E of the first four-way reversing valve are communicated, and an inlet D and a C of the second four-way reversing valve are communicated, and an S and an E of the second four-way reversing valve are cut off; when the four-way reversing valve is in a heating state, an inlet D and an inlet E of the first four-way reversing valve are communicated, a C and an S are cut off, and an inlet D and a C of the second four-way reversing valve are communicated, and an S and an E are communicated.
In the above evaporation-type condensation temperature regulation device, the refrigerant circuit further comprises a control circuit, and the control circuit is connected with the compressor, the first four-way reversing valve, the second four-way reversing valve and the electromagnetic valve.
In the evaporation type condensation temperature regulating device, a low-pressure gauge and a low-pressure switch are arranged on a pipeline connected between the gas-liquid separator and the unloading valve; and a high-pressure meter and a high-pressure switch are arranged on a pipeline between the oil content and the inlet D of the second four-way reversing valve.
In the above-mentioned evaporative condensation temperature regulation apparatus, the heat exchanger is characterized by comprising a hollow shell tube, wherein the shell tube is spirally arranged and is provided with at least one refrigerant tube arranged along the axis of the shell tube, the shell tube is connected in series with the circulation loop, and the refrigerant tube is connected in series with the refrigerant loop.
The control circuit controls the refrigerant circuit to enable the evaporative condensing temperature regulating device to be switched to the refrigerating working state when the evaporative condensing temperature regulating device is in the heating working state and needs defrosting, and controls the refrigerant circuit to enable the evaporative condensing temperature regulating device to be switched to the heating working state when defrosting is completed.
Compared with the prior art, the invention has the advantages that:
1. the cooling mode of the refrigerant is adopted, more heat is dissipated by the cooling loops with the same length, more heat can be absorbed in the refrigeration actuator, and the refrigeration efficiency and the refrigeration energy consumption are improved.
2. The water tank is divided into a water purifying area and a recycling area through the filter screen, and the water pump water pumping port is arranged in the water purifying area to avoid the blockage of the water pump.
3. The fluorine circulation defrosting function is realized, and an external heating system is not needed to be used for keeping the frostless state of the heat exchanger.
4. The evaporating cooling circuit and the air cooling circuit of the cold-warm air conditioner can be freely switched at any time, and are not influenced by time and air temperature.
Drawings
Fig. 1 is a schematic view of the structure provided by the present invention.
FIG. 2 is a schematic view of another angle configuration provided by the present invention;
FIG. 3 is a schematic diagram of an evaporative heat dissipation mechanism according to the present invention;
FIG. 4 is a schematic diagram of a water distribution mechanism provided by the invention;
FIG. 5 is a schematic diagram of the refrigeration operation provided by the present invention;
in the figure, a frame 1, a lower chamber 11, an evaporation chamber 12, an evaporation heat dissipation mechanism 2, an evaporation plate 21, an inlet tank 211, an outlet tank 212, a negative pressure fan 22, an evaporation rack 23, a wet curtain paper stack 24, a housing 25, a filter partition 26, a water distribution mechanism 3, a water supply pipe 31, a water distribution pipe 32, a water collection mechanism 4, a water collection tank 41, a water purification area 411, a recovery area 412, a filter screen 413, a blow-off pipe 414, a blow-off solenoid valve 415, a water receiving tray 42, an overflow pipe 43, an overflow hole 431, a sensor 432, an overflow solenoid valve 433, a flow guiding structure 5, a water gap 51, a water retaining surrounding edge 52, an outlet structure 6, a float valve 61, a compressor 7, a first four-way reversing valve 71, a second four-way reversing valve 72, an oil content 73, a gas-liquid separator 74, a one-way valve 75, a dry filter 76, a solenoid valve 77, an unloading valve 78, a throttle valve 79, a housing pipe 8, a refrigerant pipe 81, a circulation loop a, a water pump a1, a heat exchanger a2, a water supplementing pipe a3, a first outdoor heat exchanger a4, a second outdoor heat exchanger a5, a refrigerant loop b2, a low-pressure table b2, a low pressure table b21, and a high pressure table 31 b.
Detailed Description
As shown in fig. 1, an evaporative condensation temperature adjusting device comprises a frame 1, a lower chamber 11 and an evaporation chamber 12 positioned above the lower chamber 11 are arranged on the frame 1, an evaporation heat dissipation mechanism 2 and a water distribution mechanism 3 capable of supplying water to the evaporation heat dissipation mechanism 2 are arranged on the evaporation chamber 12, a water collection and recovery mechanism 4 capable of recovering water flowing through the evaporation heat dissipation mechanism 2 is arranged in the lower chamber 11, the water distribution mechanism 3, the evaporation heat dissipation mechanism 2 and the water collection and recovery mechanism 4 are connected in series to form a circulation loop a, a circulating water pump a1 is connected in series on the circulation loop a, the circulation loop a is connected with a heat exchanger a2 arranged in the lower chamber 11 and can exchange heat with a refrigerant loop b through the heat exchanger a2, the water collection and recovery mechanism 4 comprises a water collection tank 41 positioned in the lower chamber 11, a water collection tray 42 positioned below the evaporation heat dissipation mechanism 2 is arranged at the top of the water collection tank 41, a filter screen 411 and a recovery area 412 are arranged in the water collection tank 41, the water collection tray 42 is provided with a water collection and recovery area 411, and the water collection and recovery area is connected with the heat dissipation area 6 through the heat dissipation structure.
When the evaporative condensing temperature adjusting apparatus performs a cooling operation, the circulation water path a is started, and the circulation water pump a1 pumps cooling water from the water purification area 411 of the water header 41 and cools the refrigerant in the refrigerant pipe 81 as in the case pipe 8.
After heat exchange in the heat exchanger a2 is completed, the cooling water is uniformly distributed into the evaporative heat dissipation mechanism 2 for cooling by the cooling water fed back through the water distribution mechanism 3. Wherein the wet curtain paper stack 24 breaks up the cooling water by the gravity of the cooling water falling down, and the broken cooling water is cooled by the negative pressure fan 22 in an accelerated manner. Factors for water cooling include the surface area of the body of water and the flow rate of the surface air.
Cooling water enters the wet curtain paper stack 24 from the water inlet tank 211, leaves the wet curtain paper stack 24 from the water outlet tank 212 and falls on the water receiving disc 42, flows to the water gap 51 along the water blocking peripheral edge 52 of the flow guiding mechanism 5, enters the recovery area 412, passes through the filter screen 413, and enters the water purifying area after impurities are filtered out from the cooling water in the recovery area 412, so that the circulation loop a is completed.
Specifically, the diversion structure 5 includes a water blocking surrounding edge 52 with a water passing notch 51 and capable of preventing water from entering the water purifying area 411, the water blocking surrounding edge 52 is arranged at an opening at the top of the water collecting tank 41 and the water passing notch 51 is communicated with the recovery area 412; the water outlet structure 6 comprises a water outlet arranged in the water purifying area 411 and a float valve 61 which is arranged in the water purifying area 411 and can control the water outlet to be opened or closed.
After the cooling water is evaporated and radiated, part of the cooling water is converted into water vapor, and when the water level of the cooling water in the water collection tank 41 is lower than a set value, the float valve 61 opens a water outlet to supply the cooling water in the water collection tank 41.
The water collection and recovery mechanism 4 further comprises an overflow pipe 43 arranged on the water collection tank 41, wherein an overflow hole 431 of the overflow pipe 43 is higher than the water receiving disc 42, an overflow sensor 432 and an overflow electromagnetic valve 433 are sequentially arranged on the overflow pipe 43 from inside to outside, and the overflow electromagnetic valve 433 can be opened when the overflow sensor 432 detects data, so that the overflow pipe 43 is in a passage state.
When the float valve 61 cannot be closed in time or the circulating water pump a1 works abnormally in normal operation, the water level in the water collecting tank 41 is too high, cooling water enters the overflow pipe 43 through the overflow hole 431, the overflow sensor 432 sends out a signal to control the overflow electromagnetic valve 433 to open, and an abnormal operation alarm is sent out.
A drain pipe 414 is arranged at the bottom of the recovery area 412, and a drain electromagnetic valve 415 is arranged on the drain pipe 414; the circulating loop a is also connected with a water supplementing pipe a3 for supplementing water to the circulating loop a. When the evaporative condensing temperature adjusting apparatus is operated for a long time, impurities are accumulated in the recovery area 412, and the impurities in the recovery area 412 are discharged from the drain pipe 414 through the continuous opening and closing of the drain solenoid valve 415 and the intermittent water replenishment of the water replenishment pipe a3.
Specifically, as shown in fig. 3, the evaporation heat dissipation mechanism 2 includes a plurality of evaporation plates 21 for increasing evaporation area and a negative pressure fan 22 for accelerating the air flow of the evaporation chamber 12 to form negative pressure, the evaporation plates 21 are detachably connected to the frame 1, and each evaporation plate 21 and the negative pressure fan 22 are surrounded to form the evaporation chamber 12; the evaporation plate 21 comprises an evaporation plate frame 23, wet curtain paper stacking 24 filled with the evaporation plate frame 23 is arranged in the evaporation plate frame 23, an outer cover 25 is arranged on the side surface of the evaporation plate frame 23 far away from the evaporation chamber 12, a filtering baffle 26 is arranged between the outer cover 25 and the evaporation plate frame 23, and a water inlet groove 211 and a water outlet groove 212 are respectively arranged at the upper end and the lower end of the evaporation plate frame 23;
specifically, as shown in fig. 4, the water distribution mechanism 3 includes a water supply pipe 31 penetrating the water collection tank 41 and extending upward to the evaporation chamber 12, a plurality of water distribution pipes 32 connected end to end are connected to the water supply pipe 31, the water distribution pipes 32 are disposed in the water inlet tank 211, and the lower end of the water supply pipe 31 penetrates out of the evaporation chamber 12 and is connected to the circulating water pump a 1.
Wherein, the water distribution pipe 32 is provided with a spray opening on the upper surface, and the cooling water is sprayed upwards through the spray opening and then uniformly reflected by the water inlet groove 211 to fall into the wet curtain stacked paper 24 for re-dispersion.
The evaporative condensation temperature regulating device can be used for refrigeration and heating, and a first four-way reversing valve 71 and a second four-way reversing valve 72 are arranged in the refrigerant loop b to form the refrigerant loop b with freely switched refrigeration and heating.
Specifically, as shown in fig. 5, the refrigerant circuit b is connected to the heat exchanger a2 and can exchange heat with the circulation circuit a through the heat exchanger a 2; the refrigerant loop b comprises a compressor 7, a first four-way reversing valve 71, a second four-way reversing valve 72, oil 73, a gas-liquid separator 74, a one-way valve 75, a dry filter 76, a first outdoor heat exchanger a4 and a second outdoor heat exchanger a5; the outlet of the compressor 7 is connected with the inlet of the oil 73, the liquid outlet of the oil 73 is connected with the inlet D of the first four-way reversing valve 71, the oil outlet of the oil 73 and the outlet of the gas-liquid separator 74 are connected with the inlet of the compressor 7, the C port of the first four-way reversing valve 71 is connected with the inlet of the heat exchanger a2, the E port of the first four-way reversing valve 71 is connected with the inlet D of the second four-way reversing valve 72, the outlet of the heat exchanger a2 is connected with one end of the drying filter 76 through a one-way valve 75, the other end of the drying filter 76 is connected with an electromagnetic valve 77, an unloading valve 78 and a throttle valve 79 in parallel, the electromagnetic valve 77 is connected with the inlet of the first outdoor heat exchanger a4, the outlet of the first outdoor heat exchanger a4 is connected with the E port of the second four-way reversing valve 72, the throttle valve 79 is connected with the first port of the second outdoor heat exchanger a5, the second port of the second outdoor heat exchanger a5 is connected with the C port of the second four-way reversing valve 72, the unloading valve 78 is connected with the outlet of the gas-liquid separator 74 and the four-way reversing valve 72 is connected with the four-way valve 72; when the refrigerating state is in the refrigerating state, the inlet D and the C of the first four-way reversing valve 71 are communicated, the inlet S and the inlet E are communicated, and the inlet D and the C of the second four-way reversing valve 72 are communicated, and the inlet S and the outlet E are blocked; when in a heating state, the inlet D and the inlet E of the first four-way reversing valve 71 are communicated and the inlet C and the inlet S are cut off, and the inlet D and the inlet C of the second four-way reversing valve 72 are communicated and the inlet S and the inlet E are communicated.
In the heating process, since the outdoor weather is cold, and at the same time, the refrigerant exchanges heat in the first outdoor heat exchanger a4 to absorb heat around it, and the situation that the first outdoor heat exchanger a4 frosts easily occurs, at this time, the evaporative condensing temperature adjusting device is temporarily switched to the cooling condition, the refrigerant releases heat in the shell tube 8, and at the same time, the circulation circuit a is in the closed state, and the heat emitted by the refrigerant acts on the first outdoor heat exchanger a4 to perform the defrosting operation.
Preferably, the refrigerant circuit b further comprises a control circuit connected to the compressor 7, the first four-way reversing valve 71, the second four-way reversing valve 72 and the solenoid valve 77.
Preferably, a low-pressure gauge b2 and a low-pressure switch b21 are arranged on a pipeline connecting the gas-liquid separator 74 and the unloading valve 78; a high-pressure gauge b3 and a high-pressure switch b31 are provided on a line connecting the oil 73 and the inlet D of the second four-way selector valve 72. When any one of the low-voltage meter b2 or the high-voltage meter b3 is abnormal, the whole machine stops and alarms.
Preferably, the heat exchanger a2 comprises a hollow shell tube 8, the shell tube 8 is arranged in a spiral shape, at least one refrigerant tube 81 arranged along the axis of the shell tube 8 is arranged in the shell tube 8, the shell tube 8 is connected in series with the circulation circuit a, and the refrigerant tube 81 is connected in series with the refrigerant circuit b.
The inlet of the refrigerant tube 81 is not at the same end as the inlet of the housing tube 8, and is intended for the refrigerant to contact the cold water at the lowest temperature in the final stage of heat exchange in the housing tube 8.
The control circuit controls the refrigerant circuit b to enable the evaporative condensing temperature regulating device to be switched to the refrigerating working state when the evaporative condensing temperature regulating device is in the heating working state and needs defrosting, and controls the refrigerant circuit b to enable the evaporative condensing temperature regulating device to be switched to the heating working state when defrosting is finished.
The working principle of the invention is as follows:
when the evaporative condensing temperature adjusting apparatus performs a cooling operation, the circulation water path a is started, and the circulation water pump a1 pumps cooling water from the water purification area 411 of the water header 41 and cools the refrigerant in the refrigerant pipe 81 as in the case pipe 8.
After heat exchange in the heat exchanger a2 is completed, the cooling water is uniformly distributed into the evaporative heat dissipation mechanism 2 for cooling by the cooling water fed back through the water distribution mechanism 3. Wherein the wet curtain paper stack 24 breaks up the cooling water by the gravity of the cooling water falling down, and the broken cooling water is cooled by the negative pressure fan 22 in an accelerated manner. Factors for water cooling include the surface area of the body of water and the flow rate of the surface air.
Cooling water enters the wet curtain paper stack 24 from the water inlet tank 211, leaves the wet curtain paper stack 24 from the water outlet tank 212 and falls on the water receiving disc 42, flows to the water gap 51 along the water blocking peripheral edge 52 of the flow guiding mechanism 5, enters the recovery area 412, passes through the filter screen 413, and enters the water purifying area after impurities are filtered out from the cooling water in the recovery area 412, so that the circulation loop a is completed.
After the cooling water is evaporated and radiated, part of the cooling water is converted into water vapor, and when the water level of the cooling water in the water collection tank 41 is lower than a set value, the float valve 61 opens a water outlet to supply the cooling water in the water collection tank 41.
When the float valve 61 cannot be closed in time or the circulating water pump a1 works abnormally in normal operation, the water level in the water collecting tank 41 is too high, cooling water enters the overflow pipe 43 through the overflow hole 431, the overflow sensor 432 sends out a signal to control the overflow electromagnetic valve 433 to open, and an abnormal operation alarm is sent out.
When the evaporative condensing temperature adjusting apparatus is operated for a long time, impurities are accumulated in the recovery area 412, and the impurities in the recovery area 412 are discharged from the drain pipe 414 through the continuous opening and closing of the drain solenoid valve 415 and the intermittent water replenishment of the water replenishment pipe a3.
The evaporative condensation temperature regulating device can be used for refrigeration and heating, and a first four-way reversing valve 71 and a second four-way reversing valve 72 are arranged in the refrigerant loop b to form the refrigerant loop b with freely switched refrigeration and heating.
In the heating process, since the outdoor weather is cold, and at the same time, the refrigerant exchanges heat in the first outdoor heat exchanger a4 to absorb heat around it, and the situation that the first outdoor heat exchanger a4 frosts easily occurs, at this time, the evaporative condensing temperature adjusting device is temporarily switched to the cooling condition, the refrigerant releases heat in the shell tube 8, and at the same time, the circulation circuit a is in the closed state, and the heat emitted by the refrigerant acts on the first outdoor heat exchanger a4 to perform the defrosting operation.
The invention has the advantages that:
1. the cooling mode of the refrigerant is adopted, more heat is dissipated by the cooling loops with the same length, more heat can be absorbed in the refrigeration actuator, and the refrigeration efficiency and the refrigeration energy consumption are improved.
2. The water tank is divided into a water purifying area and a recycling area through the filter screen, and the water pump water pumping port is arranged in the water purifying area to avoid the blockage of the water pump.
3. The fluorine circulation defrosting function is realized, and an external heating system is not needed to be used for keeping the frostless state of the heat exchanger.
4. The evaporating cooling circuit and the air cooling circuit of the cold-warm air conditioner can be freely switched at any time, and are not influenced by time and air temperature.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Although the housing 1, the lower chamber 11, the evaporation chamber 12, the evaporation heat dissipation mechanism 2, the evaporation plate 21, the water inlet tank 211, the water outlet tank 212, the negative pressure fan 22, the evaporation rack 23, the wet curtain paper stack 24, the housing 25, the filter partition 26, the water distribution mechanism 3, the water supply pipe 31, the water distribution pipe 32, the water collection recovery mechanism 4, the water collection tank 41, the water purification area 411, the recovery area 412, the filter screen 413, the blowdown solenoid valve 415, the water receiving tray 42, the overflow pipe 43, the overflow hole 431, the sensor 432, the overflow solenoid valve 433, the diversion structure 5, the water gap 51, the water retaining surrounding edge 52, the water outlet structure 6, the float valve 61, the compressor 7, the first four-way reversing valve 71, the second four-way reversing valve 72, the oil content 73, the gas-liquid separator 74, the one-way valve 75, the dry filter 76, the solenoid valve 77, the unloading valve 78, the throttle valve 79, the housing pipe 8, the refrigerant pipe 81, the circulation loop a, the circulation pump a1, the heat exchanger a2, the water supplementing pipe a3, the first outdoor heat exchanger a4, the second outdoor heat exchanger a5, the refrigerant loop b, the low-pressure switch b2, the low-pressure switch b21, the high-pressure switch 31, and the high-pressure switch 31, etc. are used herein in a large number. These terms are only used to more conveniently describe and explain the nature of the invention and should be construed in a manner consistent with their spirit and scope.

Claims (8)

1. The evaporating condensation temperature regulating equipment comprises a frame (1), a lower chamber (11) and an evaporating chamber (12) positioned above the lower chamber (11) are arranged on the frame (1), an evaporating heat dissipation mechanism (2) and a water distribution mechanism (3) capable of supplying water to the evaporating heat dissipation mechanism (2) are arranged on the evaporating chamber (12), a water collection and recovery mechanism (4) capable of recovering water flowing through the evaporating heat dissipation mechanism (2) is arranged in the lower chamber (11), the water distribution mechanism (3), the evaporating heat dissipation mechanism (2) and the water collection and recovery mechanism (4) are connected in series to form a circulation loop (a), the circulation loop (a) is connected with a circulating water pump (a 1) in series, the circulation loop (a) is connected with a heat exchanger (a 2) arranged in the lower chamber (11) and can perform heat exchange with a refrigerant loop (b) through the heat exchanger (a 2), the water collection and recovery mechanism (4) is characterized in that the water collection and recovery mechanism (41) comprises a water collection tank (41) positioned in the lower chamber (11), the top of the water collection tank (41) is provided with a water collection and water collection tank (41) which is positioned below the evaporating mechanism (2) and a water collection area (41) is provided with a water collection and a water collection separating area (41), the water receiving disc (42) is provided with a flow guiding structure (5) which can recycle water flowing through the evaporation heat dissipation mechanism (2) to the recycling area (412), and the water purifying area (411) is provided with a water outlet structure (6) connected to the circulation loop (a);
the evaporation heat dissipation mechanism (2) comprises a plurality of evaporation plates (21) for increasing the evaporation area and a negative pressure fan (22) for accelerating the air flow of the evaporation chamber (12) to form negative pressure, the evaporation plates (21) are detachably connected to the frame (1), and the evaporation plates (21) and the negative pressure fan (22) are encircled to form the evaporation chamber (12); the evaporation plate (21) comprises an evaporation plate frame (23), wet curtain paper stacking (24) filled with the evaporation plate frame (23) is arranged in the evaporation plate frame (23), an outer cover (25) is arranged on the side surface, far away from the evaporation chamber (12), of the evaporation plate frame (23), a filtering baffle plate (26) is arranged between the outer cover (25) and the evaporation plate frame (23), and a water inlet groove (211) and a water outlet groove (212) are respectively arranged at the upper end and the lower end of the evaporation plate frame (23); the water distribution mechanism (3) comprises a water supply pipe (31) penetrating through the water collection tank (41) and extending upwards to the evaporation chamber (12), a plurality of water distribution pipes (32) connected end to end are connected to the water supply pipe (31), the water distribution pipes (32) are arranged in the water inlet tank (211), and the lower end of the water supply pipe (31) penetrates out of the evaporation chamber (12) and is connected with the circulating water pump (a 1);
the refrigerant loop (b) is connected with the heat exchanger (a 2) and can exchange heat with the circulation loop (a) through the heat exchanger (a 2); the refrigerant loop (b) comprises a compressor (7), a first four-way reversing valve (71), a second four-way reversing valve (72), oil (73), a gas-liquid separator (74), a one-way valve (75), a drying filter (76), a first outdoor heat exchanger (a 4) and a second outdoor heat exchanger (a 5); the outlet of the compressor (7) is connected with the inlet of the oil (73), the liquid outlet of the oil (73) is connected with the inlet D of the first four-way reversing valve (71), the oil outlet of the oil (73) and the outlet of the gas-liquid separator (74) are connected with the inlet of the compressor (7), the C port of the first four-way reversing valve (71) is connected with the inlet of the heat exchanger (a 2), the E port of the first four-way reversing valve (71) is connected with the inlet D of the second four-way reversing valve (72), the outlet of the heat exchanger (a 2) is connected with one end of the drying filter (76) through a one-way valve (75), the other end of the drying filter (76) is connected with an electromagnetic valve (77), an unloading valve (78) and a throttle valve (79) in parallel, the electromagnetic valve (77) is connected with the inlet of the first outdoor heat exchanger (a 4), the outlet of the first outdoor heat exchanger (a 4) is connected with the E port of the second four-way reversing valve (72), the throttle valve (79) is connected with the outlet of the second outdoor heat exchanger (a 5) and the second outdoor heat exchanger (a) is connected with the outlet of the second four-way reversing valve (72), the S port of the first four-way reversing valve (71) and the S port of the second four-way reversing valve (72) are connected in parallel with the gas-liquid separator (74); when the refrigerating state is in the refrigerating state, an inlet D of the first four-way reversing valve (71) is communicated with a C port, an inlet S of the first four-way reversing valve is communicated with an E port, and an inlet D of the second four-way reversing valve (72) is communicated with the C port, and the S port and the E port are cut off; when the four-way reversing valve is in a heating state, an inlet D of the first four-way reversing valve (71) is communicated with an inlet E, a C port is cut off from an inlet S, and an inlet D of the second four-way reversing valve (72) is communicated with the C port, and the S port is communicated with the E port.
2. The evaporative condensation temperature control apparatus according to claim 1, wherein the flow guiding structure (5) comprises a water blocking surrounding edge (52) which is provided with a water passing notch (51) and can prevent water from entering the water purifying area (411), the water blocking surrounding edge (52) is arranged at an opening at the top of the water collecting tank (41) and the water passing notch (51) is communicated with the recovery area (412); the water outlet structure (6) comprises a water outlet arranged in the water purifying area (411) and a float valve (61) which is arranged in the water purifying area (411) and can control the water outlet to be opened or closed.
3. The evaporative condensing temperature adjusting device according to claim 2, wherein the water collecting and recycling mechanism (4) further comprises an overflow pipe (43) arranged on the water collecting tank (41), an overflow hole (431) of the overflow pipe (43) is higher than the water receiving tray (42), an overflow sensor (432) and an overflow electromagnetic valve (433) are sequentially arranged on the overflow pipe (43) from inside to outside, and the overflow electromagnetic valve (433) can be opened when the overflow sensor (432) detects data, so that the overflow pipe (43) is in a passage state.
4. An evaporative condensing temperature conditioning apparatus according to claim 3, wherein a drain pipe (414) is provided at the bottom of the recovery zone (412), and a drain solenoid valve (415) is provided on the drain pipe (414); the circulating loop (a) is also connected with a water supplementing pipe (a 3) for supplementing water to the circulating loop (a).
5. The evaporative condensing temperature control device according to claim 4, wherein the refrigerant circuit (b) further comprises a control circuit connected to the compressor (7), the first four-way reversing valve (71), the second four-way reversing valve (72) and the solenoid valve (77).
6. The evaporative condensing temperature adjusting device according to claim 5, wherein a low-pressure gauge (b 2) and a low-pressure switch (b 21) are provided on a pipe connecting the gas-liquid separator (74) and the unloading valve (78); a high-pressure gauge (b 3) and a high-pressure switch (b 31) are arranged on a pipeline connecting the oil (73) and the inlet D of the second four-way reversing valve (72).
7. The evaporative condensing temperature control device according to claim 1, 2, 3 or 4, wherein the heat exchanger (a 2) comprises a hollow shell tube (8), the shell tube (8) is arranged in a spiral shape, at least one refrigerant tube (81) arranged along the axis of the shell tube (8) is arranged in the shell tube (8), the shell tube (8) is connected in series with the circulation loop (a), and the refrigerant tube (81) is connected in series with the refrigerant loop (b).
8. A defrosting method based on an evaporative condensing temperature adjusting apparatus as claimed in any one of claims 1 to 7, wherein the refrigerant circuit (b) is connected to a control circuit which can control the refrigerant circuit (b) to make the evaporative condensing temperature adjusting apparatus in a cooling operation state or a heating operation state, when the evaporative condensing temperature adjusting apparatus is in the heating operation state and defrosting is required, the control circuit controls the refrigerant circuit (b) to make the evaporative condensing temperature adjusting apparatus switch to the cooling operation state, and when defrosting is completed, the control circuit controls the refrigerant circuit (b) to make the evaporative condensing temperature adjusting apparatus switch back to the heating operation state.
CN201710365702.3A 2017-05-23 2017-05-23 Evaporation type condensation temperature regulating equipment and defrosting method thereof Active CN107401786B (en)

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CN108266832B (en) * 2018-02-06 2023-12-01 贵州电网有限责任公司 Solution type frosting prevention compound outdoor heat exchange device
CN209763553U (en) * 2018-12-16 2019-12-10 诸暨市菲曼特环保设备有限公司 evaporative cooling oil path circulating system of refrigeration equipment
CN110307613A (en) * 2019-08-02 2019-10-08 艾科尔新能源科技有限公司 It is a kind of to evaporate the double energy-saving type air conditioners utilized of cooling cold wind cold water and its working method

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