CN107062727B - Snow making system for performance testing device of freezing and refrigerating cabinet - Google Patents
Snow making system for performance testing device of freezing and refrigerating cabinet Download PDFInfo
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- CN107062727B CN107062727B CN201710191371.6A CN201710191371A CN107062727B CN 107062727 B CN107062727 B CN 107062727B CN 201710191371 A CN201710191371 A CN 201710191371A CN 107062727 B CN107062727 B CN 107062727B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25C—PRODUCING, WORKING OR HANDLING ICE
- F25C3/00—Processes or apparatus specially adapted for producing ice or snow for winter sports or similar recreational purposes, e.g. for sporting installations; Producing artificial snow
- F25C3/04—Processes or apparatus specially adapted for producing ice or snow for winter sports or similar recreational purposes, e.g. for sporting installations; Producing artificial snow for sledging or ski trails; Producing artificial snow
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/008—Subject matter not provided for in other groups of this subclass by doing functionality tests
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25C—PRODUCING, WORKING OR HANDLING ICE
- F25C2303/00—Special arrangements or features for producing ice or snow for winter sports or similar recreational purposes, e.g. for sporting installations; Special arrangements or features for producing artificial snow
- F25C2303/048—Snow making by using means for spraying water
- F25C2303/0481—Snow making by using means for spraying water with the use of compressed air
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- General Engineering & Computer Science (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention relates to a snow making system for a performance testing device of a freezing and refrigerating cabinet. The invention comprises a water vapor mixing and spraying unit, a water tank and an air compressor for providing compressed air for the water vapor mixing and spraying unit, wherein the bottom surface of the water tank is provided with a water outlet and a snow making water supply port, the side surface of the water tank, which is far away from the water outlet and the snow making water supply port, is provided with a water inlet, the water tank is communicated with an air-cooled water chilling unit through the water outlet and the water inlet to form a water cooling circulation loop, and the snow making water supply port is communicated with the. According to the invention, water in the water tank flows from top to bottom, water with low temperature flows in the water inlet and is mixed with water in the water tank, and the longer the mixing process is, the more uniform the temperature is, so that a snow making water area with the most uniform and constant temperature is naturally formed in the bottom area of the water tank, meanwhile, the heat loss caused by the vortex formed in the water tank is avoided, the stability of the temperature of the snow making water is ensured, and the snow making density and the snow making efficiency are improved.
Description
Technical Field
The invention belongs to the field of a performance testing device of a freezing and refrigerating cabinet, and particularly relates to a snow making system for the performance testing device of the freezing and refrigerating cabinet.
Background
Along with the more and more extensive use of freezing and refrigerating, the performance effect of various freezing and refrigerating cabinets draws more and more attention of people, so the device system for testing the performance of the freezing and refrigerating cabinets is also particularly important, and the snow making system in the performance testing device system is important.
The freezing and refrigerating cabinet directly exchanges heat with the external environment, the external environment has great influence on the running performance and the service life of the freezing and refrigerating cabinet, and relevant environmental tests are required to be carried out in order to obtain whether the freezing and refrigerating cabinet can normally run under the climate environment where the freezing and refrigerating cabinet is located, the relation between the refrigerating capacity and the external environment and whether the freezing and refrigerating cabinet is suitable for various severe climate environments. In winter, the gaps between the fins of the heat exchanger of the freezer and refrigerator can be blocked by the sucked snowflakes, so that the heat exchange capacity of the heat exchanger is reduced. If the test device has the snow making condition, the data of the influence of the snowfall on the performance of the freezing and refrigerating cabinet can be obtained, and the performance improvement of the freezing and refrigerating cabinet is facilitated.
The existing snow making system using a cold water tank as a water source keeps the temperature of water in the cold water tank stable by controlling the operation of a cold water unit, and a ball float valve in the cold water tank automatically controls the water inflow of tap water to supplement the amount of snowfall water. However, the water tank is large in size and lacks of a temperature sensor, so that temperature stratification is easily formed inside the water tank, and the non-uniformity of water temperature greatly influences the snow making effect, such as small snow making density, low efficiency and the like.
Disclosure of Invention
In order to solve the technical problems, the invention provides a snow making system for a performance testing device of a freezing and refrigerating cabinet, which has high snow making density and high efficiency.
In order to realize the purpose of the invention, the invention adopts the following technical scheme:
the utility model provides a freezing freezer capability test device is with making snow system, including steam mixed blowout unit, water tank and to steam mixed blowout unit provides compressed air's air compressor, the water tank bottom surface is equipped with the delivery port and makes snow supply port, the water tank is kept away from be equipped with the water inlet on the delivery port and the side of making snow supply port, the water tank passes through delivery port, water inlet and air-cooled chiller unit intercommunication and form water-cooling circulation loop, make snow supply port with steam mixed blowout unit intercommunication.
Further, the water outlet and the snow making water supply port are close to a first side face of the water tank, a connecting line of the water outlet and the snow making water supply port is parallel to the first side face, and the water inlet is located on a second side face, opposite to the first side face, of the water tank and far away from the bottom face of the water tank.
Further, steam mix blowout unit include with snow making feed water inlet intercommunication and along the test between the spray tube that length direction arranged and with the trachea of air compressor intercommunication, be equipped with a plurality of vertical water spray branch pipes along spray tube length direction interval arrangement on the spray tube, the water spray is divided the pipe end and is installed the shower nozzle, be equipped with on the shower nozzle with the compressed air inlet of trachea intercommunication, the gas-liquid mixture orientation is tested between wall and slope blowout downwards, the shower nozzle with the water spray is divided the contained angle between the pipe axis and is 30 ~ 60.
Further, the water tank is made by double-deck 304 corrosion resistant plate, be equipped with the foaming polyurethane intermediate layer in the middle of the double-deck 304 corrosion resistant plate, the outside 304 corrosion resistant plate of water tank constitutes shell and thickness and is 1 ~ 1.2mm, the inside 304 corrosion resistant plate of water tank constitutes inner bag and thickness and is 1.8 ~ 2.2mm, intermediate layer thickness is 30 ~ 50 mm.
Further, the air compressor is an oil-free air compressor, and the air-cooled water chilling unit is an industrial water chilling unit.
Furthermore, a water replenishing port is arranged on the first side surface of the water tank, a liquid level monitoring pipe is installed on the first side surface of the water tank, and the arrangement height of the water replenishing port is slightly higher than that of the water inlet; an overflow port is formed in the bottom surface of the water tank, an overflow pipe vertically connected to the overflow port is arranged in the water tank, and the height of the overflow pipe is slightly higher than that of the water replenishing port; the top of the water tank is provided with a water tank cover, the water tank cover is provided with two liquid level electrode mounting openings which are far away from each other, and the height difference between liquid level electrodes mounted in the two liquid level electrode mounting openings is 25-35 mm; a platinum resistor mounting port for monitoring water temperature and an escalator convenient for personnel to overhaul are arranged on a third side surface of the water tank adjacent to the first side surface, and the platinum resistor mounting port is arranged close to the bottom surface of the water tank; the center of the bottom surface of the water tank is provided with a water outlet.
Further, be equipped with the runner in the shower nozzle, the runner includes liquid entering section, steam mixing section and the steam blowout section that arranges along fluid outflow direction, be equipped with in the steam mixing section the air inlet, the air inlet is located steam mixing section middle part, the terminal runner diameter of liquid entering section reduces gradually and is the binding off form, the runner diameter crescent of steam blowout section just is the opening form.
Further, 8-12 vertical water spraying branch pipes and spray heads installed at the two ends of the spray pipe are installed on the spray pipe per meter at equal intervals, and 6-8 vertical water spraying branch pipes and spray heads installed at the middle position of the spray pipe are installed on the spray pipe per meter at equal intervals.
Further, the closing angle of the flow channel at the tail end of the liquid inlet section is 30-45 degrees, and the opening angle of the flow channel of the water vapor spraying section is 45-60 degrees.
The invention has the beneficial effects that:
(1) when the invention is used for testing snow making in a room: the water tank passes through delivery port, water inlet with the air-cooled chiller constitutes water-cooling circulation circuit for make the water for snow in the water tank by the air-cooled chiller cools down the processing, ensures that the water temperature reaches the required temperature of making snow in the water tank. The water outlet and the snow-making water supply port are both positioned on the bottom surface of the water tank, the water inlet is positioned on the side surface of the water tank and is far away from the water outlet and the snow-making water supply port, and the snow-making water supply port has the advantages of being arranged: the water top-down flows in the water tank, and the water that the temperature is low is flowed into to the water inlet and is mixed with the inside water of water tank, and mixing process is longer, and then the temperature refrigerated is even more, so just formed the snow making water area that the temperature is the most even invariable naturally in water tank bottom region, avoid the inside vortex that forms of water tank simultaneously and cause calorific loss, guaranteed the stability of making snow water temperature, improved snow making density and snow making efficiency.
The water tank in the system does not need to be additionally provided with special stirring equipment, and the distances between the water outlet, the snow making water supply port and the water inlet are set to be far as possible, so that the water in the water tank can be ensured to well depend on the water cooling circulation of a test system to realize the heat dissipation and the mixing balance process, and the constancy of the water temperature of the snow making water area in the water tank is ensured.
(2) The gas-liquid mixture is sprayed towards the wall surface of the test room, the high-speed water mist quickly rebounds after meeting the wall surface and moves towards the center of the test room, the speed of the water mist is reduced, the water mist gradually falls down while contacting with cold air of the test room, and snow is accumulated. The effect of 30 ~ 60 contained angles is formed between shower nozzle and the water spray branch pipe axis: the spraying stroke of the gas-liquid mixture is effectively increased, the high-speed water mist is fully contacted with the low-temperature environment of the test room, the snow making density and the snow making efficiency are obviously improved, and the space occupied by a snow making system is saved under the condition of limited space of the test room, so that the device is particularly suitable for the snow making test environment with limited space.
(3) The water tank disclosed by the invention is good in heat preservation performance and easy to manufacture. The invention detects the liquid level in the water tank through the liquid level electrodes, the two liquid level electrodes respectively extend into water through the mounting ports on the water tank cover and are divided into an electrode with a fixed upper water level limit and an electrode with a fixed lower water level limit, the circuit communication is realized through the electric conduction of water, the measurement and the control of the liquid level in the water tank can be started, when the liquid level is lower than the lower limit set value, the corresponding control system starts the water pump and replenishes new water into the water tank through the water replenishing port, when the liquid level exceeds the upper limit set value, the water pump is closed, the excess water overflows through the overflow pipe, and in addition, the liquid level monitoring pipe is convenient for workers to visually check the water level in the water tank. The platinum resistor is close to the bottom surface of the water tank, namely close to the snow making water area, so that the water temperature measured by the platinum resistor is the water temperature of the snow making water area, and technicians can adjust the water cooling circulation timely according to the change of the water temperature to ensure the constancy of the temperature of the snow making water.
(4) The diameter of the flow passage at the tail end of the liquid inlet section is gradually reduced and is in a closing-in shape, the structure is favorable for reducing the pressure of the liquid entering the water-vapor mixing section, the vortex caused by the sudden change of the diameter of the flow passage is reduced conveniently, the damage caused by overlarge pressure of the spray head is prevented, and the service life of the spray head is prolonged. The diameter of the flow channel at the tail end of the liquid inlet section is the smallest, so that the flow channel pressure of the water-vapor mixing section is increased, the gas and the liquid are fully mixed, and the gas and the liquid are sprayed out better.
(5) The invention is particularly suitable for being matched with a long and narrow test room, namely the length-width ratio of the test room is more than 2.5, the air return opening and the air outlet on the air return plate in the long and narrow test room are usually respectively positioned at two ends in the length direction of the test room, so that the air speeds at the two ends in the length direction of the test room are more than the air speed in the middle of the test room, and in order to ensure the uniformity of snowfall in the test room and better simulate the snowfall condition in the actual environment, the densities of the vertical water spraying branch pipes and the spray heads which are arranged at the two ends of the spray pipe are more than the densities of the vertical water spraying branch pipes and the spray heads which are.
(6) According to the invention, the closing angle value of the flow channel at the tail end of the liquid inlet section and the opening angle value of the flow channel of the water vapor spraying section are obtained through a snow making test, and the spray head has the advantages of uniform snow making, high snow making density and high snow making efficiency under the conditions of the design parameters. The spray head disclosed by the invention is simple in structure and good in snow making effect, and provides guarantee for the performance test of the refrigerating cabinet.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention.
FIG. 2 is a front view of the constant temperature water tank of the present invention.
FIG. 3 is a left side view of the constant temperature water tank of the present invention
FIG. 4 is a top view of the constant temperature water tank of the present invention.
FIG. 5 is a sectional view showing the inside of the constant-temperature water tank of the present invention.
FIG. 6 is a schematic view of the installation of the water spray branch pipe and the spray head.
Fig. 7 is a sectional view of the head of the present invention.
The designations in the drawings have the following meanings:
1-a water tank; 11-a water outlet; 12-a snow making water supply port; 13-a water inlet; 14-water replenishing port; 15-liquid level monitoring pipe; 16-an overflow pipe; 17-water tank cover; 171-liquid level electrode mounting port; 18-platinum resistor mounting ports; 19-a water outlet; 2-an air compressor; 3-air cooling water chilling unit; 4-test room; 51-a spray pipe; 52-trachea; 53-water spraying and pipe distribution; 54-a spray head; 54 a-liquid entry section; 54 b-a water-vapor mixing section; 54 c-a vapor ejection section; 541-a gas inlet; 6-an escalator; a-a first side; b-a second side; c-a third side; d-the fourth side.
Detailed Description
The technical scheme of the invention is more specifically explained by combining the following embodiments:
as shown in fig. 1, the present invention includes a water vapor mixture ejection unit, a water tank 1, and an air compressor 2 that supplies compressed air to the water vapor mixture ejection unit, and is characterized in that: 1 bottom surface of water tank is equipped with delivery port 11 and makes snow supply port 12, water tank 1 keeps away from be equipped with water inlet 13 on the side of delivery port 11 and the snow supply port 12 of making, water tank 1 passes through delivery port 11, water inlet 13 and the 3 intercommunications of air-cooled cooling water set and formation water-cooling circulation circuit, make snow supply port 12 with the mixed blowout unit intercommunication of steam.
The invention is used in test chamber 4 snow making: the water tank 1 passes through delivery port 11, water inlet 13 with air-cooled chiller 3 constitutes water-cooling circulation circuit for make the snow water in the water tank 1 by air-cooled chiller 3 carries out the cooling treatment, ensures that the temperature of water in the water tank 1 reaches the required temperature of making snow. The water outlet 11 and the snow making water supply port 12 are both positioned on the bottom surface of the water tank 1, and the water inlet 13 is positioned on the side surface of the water tank 1 and is far away from the water outlet 11 and the snow making water supply port 12, so that the snow making water supply device has the advantages that: the water top-down of water tank 1 flows, and water that the temperature is low that water inlet 13 flowed into mixes with the water of water tank 1 inside, and mixing process is longer, and then the temperature refrigerated is even more, so just formed the most even invariable snow making water region of temperature naturally in water tank 1 bottom region, avoided the inside vortex that forms of water tank 1 simultaneously and cause calorific loss, guaranteed the stability of making snow water temperature, improved snow making density and snow making efficiency.
The water outlet 11 and the snow making water supply port 12 are close to a first side surface of the water tank 1, a connecting line of the water outlet 11 and the snow making water supply port 12 is parallel to the first side surface, and the water inlet 13 is located on a second side surface of the water tank 1 opposite to the first side surface and is far away from the bottom surface of the water tank 1. In the system, the water tank 1 does not need to be additionally provided with special stirring equipment, and the distances between the water outlet 11, the snow making water supply port 12 and the water inlet 13 are set far as possible, so that the water in the water tank 1 can well depend on the water cooling circulation of a test system to realize the heat dissipation and the mixing balance process, and the constancy of the water temperature of the water area for making snow in the water tank 1 is ensured.
The mixed blowout unit of steam include with snow making water supply port 12 intercommunication and along the test 4 length direction arrangement's spray tube 51 and with the trachea 52 of air compressor 2 intercommunication, be equipped with a plurality of vertical water spray branch pipes 53 along spray tube 51 length direction interval arrangement on the spray tube 51, the shower nozzle 54 is installed to the branch pipe 53 end of water spray, be equipped with on the shower nozzle 54 with the compressed air inlet 541 of trachea 52 intercommunication, the gas-liquid mixture spouts downwards towards 4 walls and slopes between the test in the shower nozzle 54, shower nozzle 54 with the contained angle of water spray branch pipe 53 between the axis is 30 ~ 60. The gas-liquid mixture is sprayed towards the wall surface of the test chamber 4, the high-speed water mist quickly rebounds after meeting the wall surface and moves towards the center of the test chamber 4, the water mist gradually falls down while being in contact with cold air in the test chamber 4 at a reduced speed, and snow is accumulated. The shower nozzle 54 and the axis of the water spray branch pipe 53 form an included angle of 30-60 degrees: the spraying stroke of the gas-liquid mixture is effectively increased, the high-speed water mist is fully contacted with the low-temperature environment of the test room 4, the snow making density and the snow making efficiency are obviously improved, and the space occupied by a snow making system is saved under the condition of limited space of the test room 4, so that the device is particularly suitable for the snow making test environment room with limited space.
As shown in fig. 6, a flow channel is provided in the nozzle 54, the flow channel includes a liquid inlet section 54a, a water vapor mixing section 54b and a water vapor spraying section 54c arranged along the fluid outflow direction, the water vapor mixing section 54b is provided with the air inlet 541, the air inlet 541 is located in the middle of the water vapor mixing section 54b, the diameter of the flow channel at the end of the liquid inlet section 54a gradually decreases and is in a closed-up shape, and the diameter of the flow channel of the water vapor spraying section 54c gradually increases and is in an open shape. The diameter of the flow passage at the tail end of the liquid inlet section 54a is gradually reduced and is in a closing-in shape, the structure is favorable for reducing the pressure of the liquid entering the water-vapor mixing section 54b, the vortex caused by the sudden change of the diameter of the flow passage is convenient to reduce, the damage of the spray head 54 due to overlarge pressure is prevented, and the service life of the spray head 54 is prolonged. The diameter of the flow channel at the tail end of the liquid inlet section 54a is the smallest, so that the flow channel pressure of the water-vapor mixing section is increased, the gas and the liquid are fully mixed, and the gas and the liquid are sprayed out better.
The density of the vertical water spraying branched pipes 53 and the spray heads 54 arranged at the two ends of the spray pipe 51 is 8-12 installed at equal intervals on each meter of the spray pipe 51, and the density of the vertical water spraying branched pipes 53 and the spray heads 54 arranged at the middle position of the spray pipe 51 is 6-8 installed at equal intervals on each meter of the spray pipe 51. The invention is particularly suitable for being matched with a long and narrow test room, namely the length-width ratio of the test room is more than 2.5, the air return opening and the air outlet on the air return plate in the long and narrow test room are usually respectively positioned at two ends in the length direction of the test room 4, so that the air speed at two ends in the length direction of the test room 4 is more than that in the middle of the test room 4, and the density of the vertical water spraying branch pipes 53 and the spray heads 54 arranged at two ends of the spray pipe 51 is more than that of the vertical water spraying branch pipes 53 and the spray heads 54 arranged at the middle of the spray pipe 51 in order to ensure the uniformity of snow falling in the test room 4 and better simulate the snow falling condition in the real environment.
The closing angle of the flow channel at the tail end of the liquid inlet section 54a is 30-45 degrees, and the opening angle of the flow channel of the water vapor spraying section 54c is 45-60 degrees. According to the invention, the closing angle value of the flow passage at the tail end of the liquid inlet section 54a and the opening angle value of the flow passage of the water vapor spraying section 54c are obtained through a snow making test, and the spray head 54 has the advantages of uniform snow making, high snow making density and high snow making efficiency under the conditions of the design parameters. The spray head 54 has simple structure and good snow making effect, and provides guarantee for the performance test of the freezing and refrigerating cabinet.
Water tank 1 is made by double-deck 304 corrosion resistant plate, be equipped with the foaming polyurethane intermediate layer in the middle of the double-deck 304 corrosion resistant plate, 1 outside 304 corrosion resistant plate of water tank constitutes shell and thickness and is 1 ~ 1.2mm, 1 inside 304 corrosion resistant plate of water tank constitutes inner bag and thickness and is 1.8 ~ 2.2mm, intermediate layer thickness is 30 ~ 50 mm. The water tank 1 has good heat-insulating performance and is easy to manufacture.
The air compressor 2 is an oil-free air compressor, the air-cooled water chilling unit 3 must be guaranteed not to stop when the outlet water temperature is 3 ℃, and therefore an industrial water chilling unit is used. The oil-free compressor not only greatly improves the quality of compressed air, but also ensures the oil-free property of the air so as to ensure that no oil exists in low-temperature water and ensure that no oil-containing pure water exists, so that snow can be normally produced, and the energy consumption of the oil-free air compressor is lower; the industrial water chilling unit can ensure that water in the water tank 1 is stabilized at a lower temperature level, the industrial water chilling unit is stable in operation, and a halt fault cannot occur at a low temperature, so that the low-temperature water required for snow making is guaranteed.
As shown in fig. 2, 3, 4 and 5, a water replenishing port 14 is arranged on a first side surface of the water tank 1, and a liquid level monitoring pipe 15 is installed on the first side surface, wherein the water replenishing port 14 is arranged at a height slightly higher than the water inlet 13; an overflow port is formed in the bottom surface of the water tank 1, an overflow pipe 16 vertically connected to the overflow port is arranged in the water tank 1, and the height of the overflow pipe 16 is slightly higher than that of the water replenishing port 14; a water tank cover 17 is arranged at the top of the water tank 1, and two liquid level electrode mounting holes 171 which are far away from each other are arranged on the water tank cover 17; a platinum resistor installation port 18 for monitoring water temperature and an escalator 6 convenient for personnel to overhaul are arranged on a third side surface, adjacent to the first side surface, of the water tank 1, and the platinum resistor installation port 18 is arranged close to the bottom surface of the water tank 1; a water outlet 19 is arranged at the center of the bottom surface of the water tank 1. The water tank 1 needs to keep the liquid level constant when in use, the invention detects the liquid level in the water tank 1 through the liquid level electrodes, the two liquid level electrodes respectively extend into the water through the liquid level electrode mounting port 171 on the water tank cover 17 and are divided into an electrode with fixed upper water level limit and an electrode with fixed lower water level limit, the circuit is communicated through the conducting function of water and the liquid level in the water tank 1 can be measured and controlled, when the liquid level is lower than the lower limit set value, the corresponding control system starts the water pump and supplies new water into the water tank 1 through the water supply port 14, when the liquid level exceeds the upper limit set value, the water pump is closed, the length difference of the two liquid level electrodes is 25-35 mm, if the distance is too short, water is frequently replenished, if the distance is too long, insufficient water replenishing is easy to cause water shortage in the water tank, and the redundant water overflows through the overflow pipe 16, in addition, the liquid level monitoring pipe 15 is convenient for workers to visually check the water level in the water tank 1. The platinum resistor is close to the bottom surface of the water tank 1, namely close to the snow making water area, so that the water temperature measured by the platinum resistor is the water temperature of the snow making water area, and technicians can adjust the water cooling circulation timely according to the change of the water temperature to ensure the constancy of the temperature of the snow making water.
The specific dimensions of the water tank 1 in this embodiment are:
the height of the overflow pipe 16 is 13/16-15/16 of the height of the water tank 1, and the distances between the overflow pipe 16 and the first side surface A and the distance between the overflow pipe 16 and the fourth side surface D are 1/16-3/16 of the side length of the bottom surface of the water tank 1; the platinum resistor mounting port 18 is arranged at a height of 1/8-3/8 of the height of the water tank 1, and the distance from the platinum resistor mounting port 18 to the second side face B is 1/8-3/8 of the side length of the bottom face of the water tank 1; the height of the water inlet 13 is 5/8-7/8 of the height of the water tank 1, and the distance from the water inlet 13 to the fourth side surface D is 1/8-3/8 of the side length of the bottom surface of the water tank 1; the height of the water replenishing port 14 is 3/4-7/8 of the height of the water tank 1, and the distance from the water replenishing port 14 to the fourth side surface D is 1/8-3/8 of the side length of the bottom surface of the water tank 1; the liquid level monitoring pipe 15 is an external transparent pipe, a lower port of the liquid level monitoring pipe 15 is communicated to a low liquid level position of the water tank 1, an upper port of the liquid level monitoring pipe 15 is communicated to a high liquid level position of the water tank 1, a lower port of the liquid level monitoring pipe 15 is located at 1/16-3/16 of the height of the water tank 1, the distance from the liquid level monitoring pipe 15 to a third side surface C is 1/8-3/8 of the side length of the bottom surface of the water tank 1, an upper port of the liquid level monitoring pipe 15 is flush with an overflow inlet of the overflow pipe 16 in height and slightly higher than the water replenishing port 14, and the height of the water replenishing port 14 is slightly higher than the water inlet 13.
The water outlet 11 and the snow making water supply port 12 are arranged side by side on the bottom surface of the constant temperature water tank 1, the water outlet 11 is far away from the third side surface C, and the distance between the water outlet 11 and the fourth side surface D is 1/8-3/8 of the side length of the bottom surface of the water tank 1; the snow making water supply port 12 is close to the third side C, and the distance between the snow making water supply port 12 and the third side C is 1/8-3/8 of the side length of the bottom surface of the water tank 1; the connecting line of the water outlet 11 and the snow making water supply port 12 is vertical to the third side surface C; the water tank cover 17 is a circular water tank cover with the diameter of 300-500 mm, and the distances from the center of the water tank cover 17 to the third side surface C and the second side surface B are both 200-300 mm; 2 the liquid level electrode mounting openings 171 are located on the diameter line of the circular water tank cover 17 and are uniformly distributed at a distance of 200-300 mm.
Claims (7)
1. The utility model provides a freezing freezer capability test device is with making snow system, includes that steam mixes blowout unit, water tank (1) and to air compressor (2) that steam mixes blowout unit provides compressed air, its characterized in that: a water outlet (11) and a snow making water supply port (12) are arranged on the bottom surface of the water tank (1), a water inlet (13) is arranged on the side surface of the water tank (1) far away from the water outlet (11) and the snow making water supply port (12), the water tank (1) is communicated with the air-cooled water chilling unit (3) through the water outlet (11) and the water inlet (13) to form a water-cooling circulation loop, and the snow making water supply port (12) is communicated with the water vapor mixing and spraying unit;
the water outlet (11) and the snow making water supply port (12) are close to a first side face of the water tank (1), the connecting line of the water outlet (11) and the snow making water supply port (12) is parallel to the first side face, and the water inlet (13) is positioned on a second side face, opposite to the first side face, of the water tank (1) and is far away from the bottom face of the water tank (1);
a water replenishing port (14) is arranged on the first side surface of the water tank (1), and the arrangement height of the water replenishing port (14) is slightly higher than that of the water inlet (13); an overflow port is formed in the bottom surface of the water tank (1), an overflow pipe (16) vertically connected to the overflow port is arranged in the water tank (1), and the height of the overflow pipe (16) is slightly higher than that of the water replenishing port (14);
the mixed blowout unit of steam include with snow making water supply port (12) intercommunication and along test spray tube (51) that (4) length direction arranged and with trachea (52) of air compressor (2) intercommunication, be equipped with a plurality of vertical water spray branch pipes (53) of arranging along spray tube (51) length direction interval on spray tube (51), shower nozzle (54) are installed to water spray branch pipe (53) end, be equipped with on shower nozzle (54) with compressed air inlet (541) of trachea (52) intercommunication, the gas-liquid mixture orientation is tested in shower nozzle (54) and is spout downwards in slope, shower nozzle (54) with the contained angle of water spray branch between pipe (53) axis is 30 ~ 60.
2. The snow making system for a performance testing apparatus of a freezer-refrigerator as claimed in claim 1, wherein: water tank (1) is made by double-deck 304 corrosion resistant plate, be equipped with the foaming polyurethane intermediate layer in the middle of the double-deck 304 corrosion resistant plate, the outside 304 corrosion resistant plate of water tank (1) constitutes shell and thickness and is 1 ~ 1.2mm, the inside 304 corrosion resistant plate of water tank (1) constitutes inner bag and thickness and is 1.8 ~ 2.2mm, intermediate layer thickness is 30 ~ 50 mm.
3. The snow making system for a performance testing apparatus of a freezer-refrigerator as claimed in claim 1, wherein: the air compressor (2) is an oil-free air compressor, and the air-cooled water chilling unit (3) is an industrial water chilling unit.
4. The snow making system for a performance testing apparatus of a freezer-refrigerator as claimed in claim 1, wherein: a liquid level monitoring pipe (15) is installed on a first side face of the water tank (1), a water tank cover (17) is arranged at the top of the water tank (1), two liquid level electrode installing openings (171) which are far away from each other are formed in the water tank cover (17), and the height difference between liquid level electrodes installed in the two liquid level electrode installing openings (171) is 25-35 mm; a platinum resistor mounting port (18) for monitoring water temperature and an escalator (6) convenient for personnel to overhaul are arranged on a third side surface, adjacent to the first side surface, of the water tank (1), and the platinum resistor mounting port (18) is arranged close to the bottom surface of the water tank (1); a water outlet (19) is arranged at the center of the bottom surface of the water tank (1).
5. The snow making system for a performance testing apparatus of a freezer-refrigerator as claimed in claim 1, wherein: be equipped with the runner in shower nozzle (54), the runner includes liquid entering section (54a), steam mixing section (54b) and steam blowout section (54c) that arrange along fluid outflow direction, be equipped with on steam mixing section (54b) air inlet (541), air inlet (541) are located steam mixing section (54b) middle part, the terminal runner diameter that liquid got into section (54a) reduces gradually and is the binding off form, the runner diameter of steam blowout section (54c) increases gradually and is the opening form.
6. The snow making system for a performance testing apparatus of a freezer-refrigerator as claimed in claim 1, wherein: the vertical water spraying branch pipes (53) and the spray heads (54) which are arranged at the two ends of the spray pipe (51) are arranged at 8-12 equal intervals on each meter of spray pipe (51), and the vertical water spraying branch pipes (53) and the spray heads (54) which are arranged at the middle position of the spray pipe (51) are arranged at 6-8 equal intervals on each meter of spray pipe (51).
7. The snow making system for a performance testing apparatus of a freezer-refrigerator as claimed in claim 5, wherein: the closing angle of the flow channel at the tail end of the liquid inlet section (54a) is 30-45 degrees, and the opening angle of the flow channel of the water vapor spraying section (54c) is 45-60 degrees.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710191371.6A CN107062727B (en) | 2017-03-28 | 2017-03-28 | Snow making system for performance testing device of freezing and refrigerating cabinet |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710191371.6A CN107062727B (en) | 2017-03-28 | 2017-03-28 | Snow making system for performance testing device of freezing and refrigerating cabinet |
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| CN107062727A CN107062727A (en) | 2017-08-18 |
| CN107062727B true CN107062727B (en) | 2020-06-02 |
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| CN201710191371.6A Active CN107062727B (en) | 2017-03-28 | 2017-03-28 | Snow making system for performance testing device of freezing and refrigerating cabinet |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108870819A (en) * | 2018-05-16 | 2018-11-23 | 何晓明 | A kind of spray high temperature snowmaker |
| CN109253565A (en) * | 2018-08-21 | 2019-01-22 | 珠海格力电器股份有限公司 | Snowfall simulation system and snowfall control method |
| CN113514235B (en) * | 2021-04-28 | 2023-05-12 | 北京建筑大学 | Nozzle for snowmaking machine and nucleon testing equipment |
| CN114370728B (en) * | 2021-12-14 | 2024-02-02 | 合肥通用机械研究院有限公司 | Real-time monitoring method and device for snow making density of snow making machine and readable storage medium |
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| CN107062727A (en) | 2017-08-18 |
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