Industrial air-cooled water chiller

Abstract

The invention discloses an industrial air-cooled water chiller and aims to overcome the defect that an existing water chiller is poor in heat exchange efficiency. A refrigerating system and a heat exchanger are installed in the machine body, at least two evaporators are connected to a refrigerating system pipeline in parallel, the evaporators are installed in the heat exchanger, a liquid outlet of the heat exchanger is connected with a liquid inlet of a water pump, and a liquid inlet connector and a liquid outlet connector are arranged on the machine body. A liquid outlet of the water pump is communicated with the liquid outlet connector. At least two evaporators are connected in parallel on a refrigerating system pipeline, and a refrigerant simultaneously flows into the at least two evaporators for heat exchange, so that the evaporation temperature is further reduced, the refrigerating capacity is improved, the heat exchange efficiency is improved, and the energy consumption required for reaching the set temperature of the refrigerating fluid is reduced.

Description

Technical Field

[0001] The invention relates to a refrigeration device, and more particularly to an industrial air-cooled chiller. Background Art

[0002] At present, chillers are mainly divided into air-cooled chillers and water-cooled chillers. According to the refrigeration temperature range, they can be divided into normal temperature chillers and low temperature chillers. The working principle of the chiller is to inject the refrigerant into the water tank inside the refrigeration system, cool the refrigerant through the chiller refrigeration system, and then inject the low-temperature refrigerant into the equipment that needs to be cooled by the water pump. The low-temperature refrigerant takes away the heat inside the equipment, and the high-temperature refrigerant after heat exchange flows back to the refrigeration system for cooling again. In this way, the heat is exchanged in a cycle to achieve the effect of cooling the equipment. However, the existing chillers have poor heat exchange efficiency, and to achieve the set temperature of the refrigerant, it will increase energy consumption. Summary of the invention

[0003] In order to overcome the above-mentioned shortcomings, the present invention provides an industrial air-cooled chiller, which has high heat exchange efficiency and reduces the energy consumption required to reach the set temperature of the refrigerant.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: an industrial air-cooled chiller, comprising a body, a refrigeration system and a heat exchanger installed in the body, at least two evaporators are connected in parallel on the refrigeration system pipeline, the evaporator is installed in the heat exchanger, the liquid outlet of the heat exchanger is connected to the liquid inlet of the water pump, a liquid inlet joint and a liquid outlet joint are arranged on the body, the liquid inlet of the heat exchanger is connected to the liquid inlet joint, and the liquid outlet of the water pump is connected to the liquid outlet joint.

[0005] When the chiller is working, the refrigeration system and water pump are started, and the low-temperature refrigerant passes through the evaporator, gasifies and absorbs heat to achieve the refrigeration effect, thereby cooling the heat exchanger. Refrigerant is introduced into the heat exchanger, and the external refrigerant is input through the liquid inlet joint. After cooling through the heat exchanger, it is output from the liquid outlet joint through the water pump. The output refrigerant can be adjusted within the temperature range of -40℃-30℃. At least two evaporators are connected in parallel on the refrigeration system pipeline, and the refrigerant flows into at least two evaporators at the same time for heat exchange, which further reduces the evaporation temperature and increases the cooling capacity, improves the heat exchange efficiency, and reduces the energy consumption required to achieve the set temperature of the refrigerant.

[0006] The refrigerant is injected into the heat exchanger through the liquid inlet joint, cooled by the chiller refrigeration system, and then injected into the equipment that needs to be cooled by the water pump. The low-temperature refrigerant takes away the heat inside the equipment, and the high-temperature refrigerant after heat exchange flows back to the heat exchanger through the liquid inlet joint for cooling again. The heat is exchanged in this cycle to achieve the effect of cooling the equipment.

[0007] Preferably, a liquid storage tank is installed in the machine body, the liquid storage tank is connected between the liquid inlet joint and the heat exchanger, and a liquid level switch is installed in the liquid storage tank.

[0008] The liquid storage tank is used to store the returned refrigerant, and the liquid level switch is used to monitor the liquid level in the liquid storage tank. When the liquid level reaches a critical value, an insufficient liquid level alarm is automatically triggered.

[0009] Preferably, a visual liquid level display tube is installed on the outer wall of the casing, and the liquid level display tube includes a display section, an upper connecting section and a lower connecting section. The display section is installed on the side wall of the casing, the upper connecting section is connected to the upper part of the liquid storage tank, and the lower connecting section is connected to the lower part of the liquid storage tank.

[0010] The liquid level display tube can visually observe the liquid level, which is convenient for visually observing the liquid level height. The upper connecting section is connected to the upper part of the liquid storage tank, and the lower connecting section is connected to the lower part of the liquid storage tank, so that a connecting pipe structure is formed between the liquid level display tube and the liquid storage tank, so that the liquid level height of the display section is moderate and consistent with the liquid level height in the liquid storage tank.

[0011] Preferably, an exhaust valve is connected to the top of the liquid storage tank.

[0012] The exhaust valve is installed to facilitate the exhaust of air from the entire system.

[0013] Preferably, a compressor is arranged on the refrigeration system pipeline, a mounting plate is arranged at the bottom of the compressor, and the mounting plate is fastened to the bottom of the machine body.

[0014] The compressor is fixed to the bottom of the machine body through a mounting plate, and the connection is convenient and reliable.

[0015] Preferably, a sound insulation cover is installed around the compressor.

[0016] The soundproof cover has a good sound insulation effect and effectively reduces the noise during the operation of the compressor.

[0017] Preferably, a condenser is provided on the refrigeration system pipeline, the condenser is installed on the top of the machine body, and heat dissipation fans are installed on the top of the machine body and the condenser correspondingly.

[0018] The cooling fan works to extract air from the machine body, and the airflow passes through the condenser to dissipate the heat of the condenser. At the same time, the external air enters the machine body, which can also dissipate the heat of the compressor in the machine body. The airflow can evaporate the condensed water generated by the refrigeration system, eliminating the need to install a drain pipe, and the machine body will not discharge condensed water to the outside.

[0019] Preferably, a heater is installed in the machine body, a heating tube is arranged in the heater, and a liquid outlet of the heating tube is connected in series with a liquid inlet of the heat exchanger.

[0020] The setting of the heater prevents the refrigerant from freezing in a low temperature environment, and is also conducive to achieving precise control of the refrigeration temperature of the refrigerant.

[0021] Preferably, the evaporator is built into the heat exchanger to form a plate heat exchanger structure.

[0022] The plate heat exchanger has high heat exchange efficiency, small heat loss, compact and lightweight structure, small footprint and long service life.

[0023] Preferably, an economizer, an oil-water separator, a gas-liquid separator and a throttle are installed on the refrigeration system pipeline.

[0024] Economizers can improve refrigeration efficiency and energy efficiency ratio. The refrigerant absorbs heat through throttling and evaporation, so that another part of the refrigerant is supercooled, thereby improving the efficiency of the refrigeration system.

[0025] The oil-water separator can separate the refrigerant and the lubricating oil, preventing the lubricating oil from entering the condenser and evaporator along with the refrigerant and forming an oil film on the inner walls of the condenser and evaporator, thereby affecting the heat exchange efficiency.

[0026] The gas-liquid separator protects the compressor from the impact of liquids (such as lubricating oil or refrigerant), ensuring that the compressor operates normally in a safe state.

[0027] Compared with the prior art, the present invention has the following beneficial effects: (1) the heat exchange efficiency of the industrial air-cooled chiller is high, and the energy consumption required to reach the set temperature of the refrigerant is reduced; (2) the refrigeration temperature control of the refrigerant is accurate and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the present invention.

[0029] Figure 2 It is a structural schematic diagram of one aspect of the present invention.

[0030] Figure 3 It is a structural schematic diagram of another aspect of the present invention.

[0031] Figure 4 It is an internal side view of Example 1 of the present invention.

[0032] Figure 5 It is an internal side view of Example 2 of the present invention.

[0033] Figure 6 It is an internal side view of Example 3 of the present invention.

[0034] Figure 7 It is a side view of a vibration damping pad according to Example 3 of the present invention.

[0035] In the figure: 1, machine body, 2, heat exchanger, 3, water pump, 4, liquid inlet joint, 5, liquid outlet joint, 6, liquid storage tank, 7, liquid level display tube, 8, display section, 9, upper connecting section, 10, lower connecting section, 11, installation groove, 12, extension pipe, 13, compressor, 14, installation plate, 15, water receiving tray, 16, heater, 17, cooling fan, 18, economizer, 19, oil-water separator, 20, gas-liquid separator, 21, sound insulation cover, 22, vibration damping pad, 23, body frame, 24, sound-absorbing cotton pad, 25, vibration damping pad, 26, ventilation slot, 27, universal wheel, 28, mounting frame, 29, electric control cabinet, 30, cross bar, 31, top plate. DETAILED DESCRIPTION

[0036] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings: Example 1: An industrial air-cooled chiller (see attached Figure 1 To Attachment Figure 4 ), comprising a body 1, a refrigeration system and a heat exchanger 2 are installed in the body 1, at least two evaporators are connected in parallel on the refrigeration system pipeline, and two evaporators are connected in parallel in this embodiment. The evaporator is installed in the heat exchanger 2, the liquid outlet of the heat exchanger 2 is connected to the liquid inlet of the water pump 3, the water pump 3 is installed at the bottom of the body 1, and a liquid inlet joint 4 and a liquid outlet joint 5 are provided on the body 1, the liquid inlet of the heat exchanger 2 is connected to the liquid inlet joint 4, and the liquid outlet of the water pump 3 is connected to the liquid outlet joint 5.

[0037] The evaporator is built into the heat exchanger 2 to form a plate heat exchanger 2 structure. The plate heat exchanger 2 realizes the function of the evaporator and cools the refrigerant, has high heat exchange efficiency, small heat loss, compact and light structure, small footprint, and long service life.

[0038] A liquid storage tank 6 is installed in the body 1, and the liquid storage tank 6 is connected between the liquid inlet joint 4 and the heat exchanger 2. A liquid level switch is installed in the liquid storage tank 6. The liquid storage tank 6 is installed in the body 1 near the upper position, and a visible liquid level display tube 7 is installed on the outer wall of the casing. The liquid level display tube 7 includes a display section 8, an upper connecting section 9 and a lower connecting section 10. The display section 8 is installed on the side wall of the casing, the upper connecting section 9 is connected to the upper part of the liquid storage tank 6, and the lower connecting section 10 is connected to the lower part of the liquid storage tank 6. An installation groove 11 is provided on the casing corresponding to the display section 8, and the display section 8 is adapted to be installed in the installation groove 11. The liquid level display tube 7 is a transparent tube. The top of the liquid storage tank 6 is connected to an exhaust valve. The top of the liquid storage tank 6 is connected to an extension tube 12, and the extension tube 12 extends to the outside of the body 1. The exhaust valve is installed at the end of the extension tube 12.

[0039] A compressor 13 is arranged on the refrigeration system pipeline, and a mounting plate 14 is arranged at the bottom of the compressor 13, and the mounting plate 14 is fastened to the bottom of the body 1. A water receiving tray 15 is arranged at the mounting plate 14 at the bottom of the body 1 to receive condensed water. A heater 16 is arranged in the body 1, and a heating pipe is arranged in the heater 16, and the liquid outlet of the heating pipe is connected in series with the liquid inlet of the heat exchanger 2. The arrangement of the heater 16 prevents the refrigerant from freezing in a low temperature environment, and is conducive to the precise control of the refrigeration temperature of the refrigerant.

[0040] A condenser is arranged on the refrigeration system pipeline, and the condenser is installed on the top of the machine body 1. A heat dissipation fan 17 is installed on the top of the machine body 1 and corresponding to the condenser. The heat dissipation fan 17 works to extract air from the machine body 1, and the heat of the condenser is achieved when the airflow passes through the condenser. At the same time, the external air enters the machine body 1, and the heat of the compressor 13 in the machine body 1 can also be achieved. The airflow can evaporate the condensed water generated by the refrigeration system, eliminating the need to install a drain pipe, and the machine body 1 will not discharge the condensed water to the outside. An economizer 18, an oil-water separator 19, a gas-liquid separator 20, and a throttle are installed on the refrigeration system pipeline.

[0041] Specifically, Figure 1 As shown, two cooling fans 17 are installed on the top of the body 1, and the cooling fans 17 dissipate heat for the condenser. A plurality of ventilation slots 26 are densely distributed on the front and rear panels of the body 1. When the cooling fans 17 are working, the external air enters the body 1 through the ventilation slots 26, and is discharged from the top of the body 1 after reaching the condenser. A plurality of universal wheels 27 with brakes are installed at the bottom of the body 1, and the setting of the universal wheels 27 facilitates the movement of the entire body 1.

[0042] like Figure 2 , Figure 3As shown, a mounting frame 28 is provided in the machine body 1, and the mounting frame 28 is formed by a plurality of connecting rods being fastened and connected. The mounting frame 28 includes a bottom frame, a middle frame and a top frame, and the water pump 3 is installed on the bottom frame of the mounting frame 28. The plate heat exchanger 2 and the economizer 18 are fastened and installed on the same mounting plate, and the heater 16 and the mounting plate are fastened and installed on the middle frame. The liquid storage tank 6 is installed on the top frame. An electric control cabinet 29 is installed on the side of the machine body 1, and the mounting frame 28 is arranged between the compressor 13 and the electric control cabinet 29. An electric control module is installed in the electric control cabinet 29, and a plurality of heat dissipation holes are arranged on the side of the electric control cabinet 29 to prevent the electric control module from overheating. A plurality of cross bars 30 are arranged above the mounting frame 28 at the top of the machine body 1, and a top plate 31 is installed on the top of the machine body 1. The condenser is installed between the cross bars 30 and the top plate 31. Two mounting holes are arranged on the top plate 31 corresponding to the heat dissipation fan 17, and the two heat dissipation fans 17 are respectively installed at the positions of the two mounting holes. The upper panel of the condenser is attached to the top plate 31, which ensures the installation strength while eliminating the reinforcing ribs of the top plate 31, saving space. The cooling fan 17 is facing upward, and the two side panels of the body 1 are designed with waist-shaped ventilation slots 26 to facilitate air circulation inside the body 1 and quickly dissipate heat.

[0043] All refrigeration components, refrigerant pipes and cooling pipes are wrapped with thermal insulation cotton to minimize the loss of cooling capacity. Pressure sensors and temperature sensors are installed at the liquid inlet joint 4 and the liquid outlet joint 5.

[0044] The circulation pipeline of the refrigeration system is connected in sequence from the outlet of the compressor 13 to an oil-water separator 19, a condenser, an economizer 18, a throttle, and an evaporator. The evaporator is connected to the inlet of the compressor 13, and the gas-liquid separator 20 is connected in parallel between the inlet and outlet of the compressor 13.

[0045] The cooling pipeline is installed with a liquid inlet joint 4, a liquid storage tank 6, a heater 16, a heat exchanger 2, a water pump 3, and a liquid outlet joint 5 in sequence. When the water pump 3 is working, the refrigerant enters from the liquid inlet joint 4, flows into the liquid storage tank 6, passes through the heater 16, enters the heat exchanger 2 for cooling, and then passes through the water pump 3 and is transported out from the liquid outlet joint 5.

[0046] When the chiller is working, the refrigeration system and water pump 3 are started, and the low-temperature refrigerant passes through the evaporator, gasifies and absorbs heat, achieving the refrigeration effect, thereby cooling the heat exchanger 2. Refrigerant is introduced into the heat exchanger 2, and the external refrigerant is input through the liquid inlet joint 4. After being cooled by the heat exchanger 2, it is output from the liquid outlet joint 5 through the water pump 3. The output refrigerant can be adjusted within the temperature range of -40℃-30℃. At least two evaporators are connected in parallel on the refrigeration system pipeline, and the refrigerant flows into at least two evaporators at the same time for heat exchange, which further reduces the evaporation temperature and increases the cooling capacity, improves the heat exchange efficiency, and reduces the energy consumption required to achieve the set temperature of the refrigerant.

[0047] The refrigerant is injected into the heat exchanger 2 through the liquid inlet joint 4, and the refrigerant is cooled by the chiller refrigeration system. The water pump 3 then injects the low-temperature refrigerant into the equipment that needs to be cooled. The low-temperature refrigerant takes away the heat inside the equipment, and the high-temperature refrigerant after heat exchange flows back to the heat exchanger 2 through the liquid inlet joint 4 to be cooled again. In this way, the heat is circulated and exchanged to achieve the effect of cooling the equipment.

[0048] Example 2: An industrial air-cooled chiller (see attached Figure 5 ), comprising a body 1, a refrigeration system and a heat exchanger 2 are installed in the body 1, at least two evaporators are connected in parallel on the refrigeration system pipeline, and two evaporators are connected in parallel in this embodiment. The evaporator is installed in the heat exchanger 2, the liquid outlet of the heat exchanger 2 is connected to the liquid inlet of the water pump 3, the water pump 3 is installed at the bottom of the body 1, and a liquid inlet joint 4 and a liquid outlet joint 5 are provided on the body 1, the liquid inlet of the heat exchanger 2 is connected to the liquid inlet joint 4, and the liquid outlet of the water pump 3 is connected to the liquid outlet joint 5.

[0049] The evaporator is built into the heat exchanger 2 to form a plate heat exchanger 2 structure. The plate heat exchanger 2 realizes the function of the evaporator and cools the refrigerant, has high heat exchange efficiency, small heat loss, compact and light structure, small footprint, and long service life.

[0050] A liquid storage tank 6 is installed in the body 1, and the liquid storage tank 6 is connected between the liquid inlet joint 4 and the heat exchanger 2. A liquid level switch is installed in the liquid storage tank 6. The liquid storage tank 6 is installed in the body 1 near the upper position, and a visible liquid level display tube 7 is installed on the outer wall of the casing. The liquid level display tube 7 includes a display section 8, an upper connecting section 9 and a lower connecting section 10. The display section 8 is installed on the side wall of the casing, the upper connecting section 9 is connected to the upper part of the liquid storage tank 6, and the lower connecting section 10 is connected to the lower part of the liquid storage tank 6. An installation groove 11 is provided on the casing corresponding to the display section 8, and the display section 8 is adapted to be installed in the installation groove 11. The liquid level display tube 7 is a transparent tube. The top of the liquid storage tank 6 is connected to an exhaust valve. The top of the liquid storage tank 6 is connected to an extension tube 12, and the extension tube 12 extends to the outside of the body 1. The exhaust valve is installed at the end of the extension tube 12.

[0051] A compressor 13 is arranged on the refrigeration system pipeline, and a mounting plate 14 is arranged at the bottom of the compressor 13, and the mounting plate 14 is fastened to the bottom of the body 1. A water receiving tray 15 is arranged at the mounting plate 14 at the bottom of the body 1 to receive condensed water. A heater 16 is arranged in the body 1, and a heating pipe is arranged in the heater 16, and the liquid outlet of the heating pipe is connected in series with the liquid inlet of the heat exchanger 2. The arrangement of the heater 16 prevents the refrigerant from freezing in a low temperature environment, and is conducive to the precise control of the refrigeration temperature of the refrigerant.

[0052] A condenser is arranged on the refrigeration system pipeline, and the condenser is installed on the top of the machine body 1. A heat dissipation fan 17 is installed on the top of the machine body 1 and corresponding to the condenser. The heat dissipation fan 17 works to extract air from the machine body 1, and the heat of the condenser is achieved when the airflow passes through the condenser. At the same time, the external air enters the machine body 1, and the heat of the compressor 13 in the machine body 1 can also be achieved. The airflow can evaporate the condensed water generated by the refrigeration system, eliminating the need to install a drain pipe, and the machine body 1 will not discharge the condensed water to the outside. An economizer 18, an oil-water separator 19, a gas-liquid separator 20, and a throttle are installed on the refrigeration system pipeline.

[0053] A soundproof cover 21 is mounted on the periphery of the compressor 13, the lower end of the soundproof cover 21 is open, and the lower end of the soundproof cover 21 is tightly connected to the water receiving tray 15. The soundproof cover 21 has a good sound insulation effect and effectively reduces the noise during the operation of the compressor 13. Avoidance windows are set on the soundproof cover 21 corresponding to the air intake and exhaust ports.

[0054] Specifically, Figure 1 As shown, two cooling fans 17 are installed on the top of the body 1, and the cooling fans 17 dissipate heat for the condenser. A plurality of ventilation slots 26 are densely distributed on the front and rear panels of the body 1. When the cooling fans 17 are working, the external air enters the body 1 through the ventilation slots 26, and is discharged from the top of the body 1 after reaching the condenser. A plurality of universal wheels 27 with brakes are installed at the bottom of the body 1, and the setting of the universal wheels 27 facilitates the movement of the entire body 1.

[0055] like Figure 2 , Figure 3 As shown, a mounting frame 28 is provided in the machine body 1, and the mounting frame 28 is formed by a plurality of connecting rods being fastened and connected. The mounting frame 28 includes a bottom frame, a middle frame and a top frame, and the water pump 3 is installed on the bottom frame of the mounting frame 28. The plate heat exchanger 2 and the economizer 18 are fastened and installed on the same mounting plate, and the heater 16 and the mounting plate are fastened and installed on the middle frame. The liquid storage tank 6 is installed on the top frame. An electric control cabinet 29 is installed on the side of the machine body 1, and the mounting frame 28 is arranged between the compressor 13 and the electric control cabinet 29. An electric control module is installed in the electric control cabinet 29, and a plurality of heat dissipation holes are arranged on the side of the electric control cabinet 29 to prevent the electric control module from overheating. A plurality of cross bars 30 are arranged above the mounting frame 28 at the top of the machine body 1, and a top plate 31 is installed on the top of the machine body 1. The condenser is installed between the cross bars 30 and the top plate 31. Two mounting holes are arranged on the top plate 31 corresponding to the heat dissipation fan 17, and the two heat dissipation fans 17 are respectively installed at the positions of the two mounting holes. The upper panel of the condenser is attached to the top plate 31, which ensures the installation strength while eliminating the reinforcing ribs of the top plate 31, saving space. The cooling fan 17 is facing upward, and the two side panels of the body 1 are designed with waist-shaped ventilation slots 26 to facilitate air circulation inside the body 1 and quickly dissipate heat.

[0056] like Figure 5As shown, a soundproof cover 21 is mounted on the periphery of the compressor 13 , the lower end of the soundproof cover 21 is open, and the lower end of the soundproof cover 21 is tightly connected to the water receiving tray 15 .

[0057] All refrigeration components, refrigerant pipes and cooling pipes are wrapped with thermal insulation cotton to minimize the loss of cooling capacity. Pressure sensors and temperature sensors are installed at the liquid inlet joint 4 and the liquid outlet joint 5.

[0058] The circulation pipeline of the refrigeration system is connected in sequence from the outlet of the compressor 13 to an oil-water separator 19, a condenser, an economizer 18, a throttle, and an evaporator. The evaporator is connected to the inlet of the compressor 13, and the gas-liquid separator 20 is connected in parallel between the inlet and outlet of the compressor 13.

[0059] The cooling pipeline is installed with a liquid inlet joint 4, a liquid storage tank 6, a heater 16, a heat exchanger 2, a water pump 3, and a liquid outlet joint 5 in sequence. When the water pump 3 is working, the refrigerant enters from the liquid inlet joint 4, flows into the liquid storage tank 6, passes through the heater 16, enters the heat exchanger 2 for cooling, and then passes through the water pump 3 and is transported out from the liquid outlet joint 5.

[0060] When the chiller is working, the refrigeration system and water pump 3 are started, and the low-temperature refrigerant passes through the evaporator, gasifies and absorbs heat, achieving the refrigeration effect, thereby cooling the heat exchanger 2. Refrigerant is introduced into the heat exchanger 2, and the external refrigerant is input through the liquid inlet joint 4. After being cooled by the heat exchanger 2, it is output from the liquid outlet joint 5 through the water pump 3. The output refrigerant can be adjusted within the temperature range of -40℃-30℃. At least two evaporators are connected in parallel on the refrigeration system pipeline, and the refrigerant flows into at least two evaporators at the same time for heat exchange, which further reduces the evaporation temperature and increases the cooling capacity, improves the heat exchange efficiency, and reduces the energy consumption required to achieve the set temperature of the refrigerant.

[0061] The refrigerant is injected into the heat exchanger 2 through the liquid inlet joint 4, and the refrigerant is cooled by the chiller refrigeration system. The water pump 3 then injects the low-temperature refrigerant into the equipment that needs to be cooled. The low-temperature refrigerant takes away the heat inside the equipment, and the high-temperature refrigerant after heat exchange flows back to the heat exchanger 2 through the liquid inlet joint 4 to be cooled again. In this way, the heat is circulated and exchanged to achieve the effect of cooling the equipment.

[0062] Example 3: An industrial air-cooled chiller (see attached Figure 6 , Attachment Figure 7 ), comprising a body 1, a refrigeration system and a heat exchanger 2 are installed in the body 1, at least two evaporators are connected in parallel on the refrigeration system pipeline, and two evaporators are connected in parallel in this embodiment. The evaporator is installed in the heat exchanger 2, the liquid outlet of the heat exchanger 2 is connected to the liquid inlet of the water pump 3, the water pump 3 is installed at the bottom of the body 1, and a liquid inlet joint 4 and a liquid outlet joint 5 are provided on the body 1, the liquid inlet of the heat exchanger 2 is connected to the liquid inlet joint 4, and the liquid outlet of the water pump 3 is connected to the liquid outlet joint 5.

[0063] The evaporator is built into the heat exchanger 2 to form a plate heat exchanger 2 structure. The plate heat exchanger 2 realizes the function of the evaporator and cools the refrigerant, has high heat exchange efficiency, small heat loss, compact and light structure, small footprint, and long service life.

[0064] A liquid storage tank 6 is installed in the body 1, and the liquid storage tank 6 is connected between the liquid inlet joint 4 and the heat exchanger 2. A liquid level switch is installed in the liquid storage tank 6. The liquid storage tank 6 is installed in the body 1 near the upper position, and a visible liquid level display tube 7 is installed on the outer wall of the casing. The liquid level display tube 7 includes a display section 8, an upper connecting section 9 and a lower connecting section 10. The display section 8 is installed on the side wall of the casing, the upper connecting section 9 is connected to the upper part of the liquid storage tank 6, and the lower connecting section 10 is connected to the lower part of the liquid storage tank 6. An installation groove 11 is provided on the casing corresponding to the display section 8, and the display section 8 is adapted to be installed in the installation groove 11. The liquid level display tube 7 is a transparent tube. The top of the liquid storage tank 6 is connected to an exhaust valve. The top of the liquid storage tank 6 is connected to an extension tube 12, and the extension tube 12 extends to the outside of the body 1. The exhaust valve is installed at the end of the extension tube 12.

[0065] A compressor 13 is arranged on the refrigeration system pipeline, and a mounting plate 14 is arranged at the bottom of the compressor 13, and the mounting plate 14 is fastened to the bottom of the body 1. A water receiving tray 15 is arranged at the mounting plate 14 at the bottom of the body 1 to receive condensed water. A heater 16 is arranged in the body 1, and a heating pipe is arranged in the heater 16, and the liquid outlet of the heating pipe is connected in series with the liquid inlet of the heat exchanger 2. The arrangement of the heater 16 prevents the refrigerant from freezing in a low temperature environment, and is conducive to the precise control of the refrigeration temperature of the refrigerant.

[0066] A condenser is arranged on the refrigeration system pipeline, and the condenser is installed on the top of the machine body 1. A heat dissipation fan 17 is installed on the top of the machine body 1 and corresponding to the condenser. The heat dissipation fan 17 works to extract air from the machine body 1, and the heat of the condenser is achieved when the airflow passes through the condenser. At the same time, the external air enters the machine body 1, and the heat of the compressor 13 in the machine body 1 can also be achieved. The airflow can evaporate the condensed water generated by the refrigeration system, eliminating the need to install a drain pipe, and the machine body 1 will not discharge the condensed water to the outside. An economizer 18, an oil-water separator 19, a gas-liquid separator 20, and a throttle are installed on the refrigeration system pipeline.

[0067] A soundproof cover 21 is mounted on the periphery of the compressor 13, and the lower end of the soundproof cover 21 is open, and the lower end of the soundproof cover 21 is tightly connected to the water receiving tray 15. A vibration-damping pad 22 is tightly mounted between the soundproof cover 21 and the compressor 13. The soundproof cover 21 has a good sound insulation effect, and effectively reduces the noise during the operation of the compressor 13. Avoidance windows are arranged on the soundproof cover 21 corresponding to the air intake and exhaust ports. The vibration-damping pad 22 has the effect of sound insulation and vibration reduction. The vibration-damping pad 22 includes a main body frame 23, and sound-absorbing cotton pads 24 are arranged on both sides of the main body frame 23. The main body frame 23 is alternately arranged to protrude inwardly and outwardly to form a trapezoidal wavy structure. A number of vibration-damping pads 25 are installed on the main body frame 23 at intervals, and the two ends of the vibration-damping pads 25 are respectively pressed against the outer wall of the compressor 13 and the inner wall of the soundproof cover 21. The vibration-damping pads 25 are made of rubber material, which can buffer and absorb energy to achieve vibration reduction.

[0068] Specifically, Figure 1 As shown, two cooling fans 17 are installed on the top of the body 1, and the cooling fans 17 dissipate heat for the condenser. A plurality of ventilation slots 26 are densely distributed on the front and rear panels of the body 1. When the cooling fans 17 are working, the external air enters the body 1 through the ventilation slots 26, and is discharged from the top of the body 1 after reaching the condenser. A plurality of universal wheels 27 with brakes are installed at the bottom of the body 1, and the setting of the universal wheels 27 facilitates the movement of the entire body 1.

[0069] like Figure 2 , Figure 3 As shown, a mounting frame 28 is provided in the machine body 1, and the mounting frame 28 is formed by a plurality of connecting rods being fastened and connected. The mounting frame 28 includes a bottom frame, a middle frame and a top frame, and the water pump 3 is installed on the bottom frame of the mounting frame 28. The plate heat exchanger 2 and the economizer 18 are fastened and installed on the same mounting plate, and the heater 16 and the mounting plate are fastened and installed on the middle frame. The liquid storage tank 6 is installed on the top frame. An electric control cabinet 29 is installed on the side of the machine body 1, and the mounting frame 28 is arranged between the compressor 13 and the electric control cabinet 29. An electric control module is installed in the electric control cabinet 29, and a plurality of heat dissipation holes are arranged on the side of the electric control cabinet 29 to prevent the electric control module from overheating. A plurality of cross bars 30 are arranged above the mounting frame 28 at the top of the machine body 1, and a top plate 31 is installed on the top of the machine body 1. The condenser is installed between the cross bars 30 and the top plate 31. Two mounting holes are arranged on the top plate 31 corresponding to the heat dissipation fan 17, and the two heat dissipation fans 17 are respectively installed at the positions of the two mounting holes. The upper panel of the condenser is attached to the top plate 31, which ensures the installation strength while eliminating the reinforcing ribs of the top plate 31, saving space. The cooling fan 17 is facing upward, and the two side panels of the body 1 are designed with waist-shaped ventilation slots 26 to facilitate air circulation inside the body 1 and quickly dissipate heat.

[0070] like Figure 6 , Figure 7As shown, a soundproof cover 21 is mounted on the periphery of the compressor 13, the lower end of the soundproof cover 21 is open, the lower end of the soundproof cover 21 is tightly connected to the water receiving tray 15, and a vibration-damping pad 22 is tightly mounted between the soundproof cover 21 and the compressor 13. The vibration-damping pad 22 includes a body frame 23, and sound-absorbing cotton pads 24 are arranged on both sides of the body frame 23. The body frame 23 is alternately arranged to protrude inwardly and outwardly to form a trapezoidal wavy structure. A plurality of vibration-damping pads 25 are installed on the body frame 23 at intervals, and the two ends of the vibration-damping pads 25 are respectively pressed against the outer wall of the compressor 13 and the inner wall of the soundproof cover 21.

[0071] All refrigeration components, refrigerant pipes and cooling pipes are wrapped with thermal insulation cotton to minimize the loss of cooling capacity. Pressure sensors and temperature sensors are installed at the liquid inlet joint 4 and the liquid outlet joint 5.

[0072] The circulation pipeline of the refrigeration system is connected in sequence from the outlet of the compressor 13 to an oil-water separator 19, a condenser, an economizer 18, a throttle, and an evaporator. The evaporator is connected to the inlet of the compressor 13, and the gas-liquid separator 20 is connected in parallel between the inlet and outlet of the compressor 13.

[0073] The cooling pipeline is installed with a liquid inlet joint 4, a liquid storage tank 6, a heater 16, a heat exchanger 2, a water pump 3, and a liquid outlet joint 5 in sequence. When the water pump 3 is working, the refrigerant enters from the liquid inlet joint 4, flows into the liquid storage tank 6, passes through the heater 16, enters the heat exchanger 2 for cooling, and then passes through the water pump 3 and is transported out from the liquid outlet joint 5.

[0074] When the chiller is working, the refrigeration system and water pump 3 are started, and the low-temperature refrigerant passes through the evaporator, gasifies and absorbs heat, achieving the refrigeration effect, thereby cooling the heat exchanger 2. Refrigerant is introduced into the heat exchanger 2, and the external refrigerant is input through the liquid inlet joint 4. After being cooled by the heat exchanger 2, it is output from the liquid outlet joint 5 through the water pump 3. The output refrigerant can be adjusted within the temperature range of -40℃-30℃. At least two evaporators are connected in parallel on the refrigeration system pipeline, and the refrigerant flows into at least two evaporators at the same time for heat exchange, which further reduces the evaporation temperature and increases the cooling capacity, improves the heat exchange efficiency, and reduces the energy consumption required to achieve the set temperature of the refrigerant.

[0075] The refrigerant is injected into the heat exchanger 2 through the liquid inlet joint 4, and the refrigerant is cooled by the chiller refrigeration system. The water pump 3 then injects the low-temperature refrigerant into the equipment that needs to be cooled. The low-temperature refrigerant takes away the heat inside the equipment, and the high-temperature refrigerant after heat exchange flows back to the heat exchanger 2 through the liquid inlet joint 4 to be cooled again. In this way, the heat is circulated and exchanged to achieve the effect of cooling the equipment.

[0076] The above-described embodiments are only preferred solutions of the present invention and are not intended to limit the present invention in any form. Other variations and modifications are possible without exceeding the technical solutions described in the claims.

Claims

1. An industrial air-cooled chiller, characterized in that: The invention comprises a machine body, a refrigeration system and a heat exchanger are installed in the machine body, at least two evaporators are connected in parallel on the refrigeration system pipeline, the evaporator is installed in the heat exchanger, the liquid outlet of the heat exchanger is connected to the liquid inlet of the water pump, a liquid inlet joint and a liquid outlet joint are arranged on the machine body, the liquid inlet of the heat exchanger is connected to the liquid inlet joint, and the liquid outlet of the water pump is connected to the liquid outlet joint.

2. The industrial air-cooled chiller according to claim 1, characterized in that: A liquid storage tank is installed in the machine body, the liquid storage tank is connected between the liquid inlet joint and the heat exchanger, and a liquid level switch is installed in the liquid storage tank.

3. The industrial air-cooled chiller according to claim 2, characterized in that: A visible liquid level display tube is installed on the outer wall of the casing. The liquid level display tube includes a display section, an upper connecting section and a lower connecting section. The display section is installed on the side wall of the casing. The upper connecting section is connected to the upper part of the liquid storage tank, and the lower connecting section is connected to the lower part of the liquid storage tank.

4. The industrial air-cooled chiller according to claim 2 is characterized in that: The top of the reservoir is connected to an exhaust valve.

5. The industrial air-cooled chiller according to claim 1, characterized in that: A compressor is arranged on the refrigeration system pipeline, a mounting plate is arranged at the bottom of the compressor, and the mounting plate is fastened to the bottom of the machine body.

6. The industrial air-cooled chiller according to claim 5, characterized in that: A soundproof cover is provided around the compressor.

7. The industrial air-cooled chiller according to claim 1, characterized in that: A condenser is arranged on the refrigeration system pipeline, and the condenser is installed on the top of the machine body. Cooling fans are installed on the top of the machine body and corresponding to the condenser.

8. The industrial air-cooled chiller according to claim 1, characterized in that: A heater is installed in the machine body, a heating pipe is arranged in the heater, and a liquid outlet of the heating pipe is connected in series with a liquid inlet of the heat exchanger.

9. An industrial air-cooled chiller according to any one of claims 1 to 8, characterized in that: The evaporator is built into the heat exchanger to form a plate heat exchanger structure.

10. An industrial air-cooled chiller according to any one of claims 1 to 8, characterized in that: Economizer, oil-water separator, gas-liquid separator and throttle are installed on the refrigeration system pipeline.

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