All-air air conditioning system for thermal control of telescope dome

Abstract

The utility model relates to the technical field of telescopes, in particular to an all-air air conditioning system for thermal control of a telescope dome. The all-air air conditioning system for thermal control of the telescope dome comprises a shell; the air return assembly is arranged in the shell, the air return assembly is provided with a first air return pipe, and the first air return pipe is communicated with the main mirror chamber; the air supply assembly is arranged in the shell, the air supply assembly is provided with a fresh air pipe and an air supply pipe, the fresh air pipe is communicated with the outside, and the air supply pipe is communicated with the main mirror chamber; the temperature control assembly is arranged in the shell, the temperature control assembly communicates with the fresh air pipe and the air supply pipe, and the temperature control assembly is used for heating or refrigerating air in the air supply pipe; and the detection assembly comprises sensors arranged in the main mirror chamber, the air supply pipe and the outside, and the sensors are connected with the temperature control assembly so as to transmit detected temperature information to the temperature control assembly. The air return assembly, the air supply assembly and the temperature control assembly are integrated in the shell, and the whole air conditioning system is simple in structure and convenient to control.

Description

TECHNICAL FIELD

[0001] The utility model relates to telescope technical field, concretely relates to a kind of full air conditioning system for telescope dome heat control BACKGROUND

[0002] Good pointing accuracy and imaging quality are the inevitable requirement for optical telescope to achieve scientific benefits maximization. With the continuous increase of telescope aperture, the thermal inertia of each component of the system increases, and the adverse effects of local seeing caused by the temperature change lag of each component on the imaging accuracy of the optical system are more and more obvious. Studies have shown that when the temperature difference between the telescope surface and the surrounding environment is too large, the convective heat exchange between the two will cause frequent changes in the refractive index of the air in the optical path range, resulting in the movement and distortion of the observation image plane; under the premise that the site conditions, telescope performance, terminal instrument equipment and other conditions have been basically determined, the improvement measures and observation strategies of local seeing will significantly affect the imaging quality of the telescope. Therefore, it is necessary to control the temperature difference between the inside and outside of the large-aperture optical telescope cover by using necessary thermal control means, which is a key link in the application of such devices.

[0003] In the related art, the air conditioning system and the ventilation system are independently arranged, the air conditioning and ventilation system control is complex, and the air conditioning system terminal is directly placed in the primary mirror chamber of the dome, and the vibration and heat dissipation generated during the operation of the air conditioner will have adverse effects on the precision optical instrument. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model provides a kind of full air conditioning system with air conditioning, fresh air and exhaust function, by the flexible switching of the function section of unit, meet the heat control demand of telescope dome under complex and changeable environment, to solve the problem of air conditioning and ventilation system control complex in the prior art, vibration and heat dissipation generated during the operation of the air conditioner will have adverse effects on the precision optical instrument.

[0005] The utility model provides a kind of full air conditioning system for telescope dome heat control, it includes:

[0006] Shell;

[0007] Return air component, the return air component is arranged in the shell, the return air component has first return air pipe, and the first return air pipe is communicated with primary mirror chamber;

[0008] Air supply component, the air supply component is arranged in the shell, the air supply component has fresh air pipe and air supply pipe, the fresh air pipe is communicated with outdoor, and the air supply pipe is communicated with primary mirror chamber;

[0009] Temperature control component, the temperature control component is arranged in the shell, the temperature control component is communicated with fresh air pipe and air supply pipe respectively, and the temperature control component is used to heat or refrigerate the air in air supply pipe;

[0010] a detection assembly, which comprises a sensor arranged in the main mirror chamber, the air supply pipe and the outdoor, and which is connected with the temperature control assembly to transmit the detected temperature information to the temperature control assembly.

[0011] In an alternative embodiment, the shell has a return air cavity, a mixed air cavity, a temperature control cavity and an air supply cavity, the return air cavity is located on one side of the mixed air cavity, the air supply cavity is arranged on the side of the mixed air cavity away from the return air cavity, the temperature control cavity is arranged between the mixed air cavity and the air supply cavity, the other end of the first return air pipe is in communication with the return air cavity, the other end of the fresh air pipe is in communication with the mixed air cavity, the other end of the air supply pipe is in communication with the air supply cavity, the temperature control assembly is arranged in the temperature control cavity, and the mixed air cavity, the temperature control cavity and the air supply cavity are in sequence communication.

[0012] In an alternative embodiment, the shell further has an exhaust air cavity, the exhaust air cavity is arranged on the side of the return air cavity away from the mixed air cavity, the exhaust air cavity is provided with an exhaust air assembly, the exhaust air cavity is in communication with the return air cavity, and the exhaust air assembly has an exhaust air pipe, the two ends of the exhaust air pipe are in communication with the exhaust air cavity and the exhaust air trench respectively.

[0013] In an alternative embodiment, the temperature control assembly has a first-level refrigeration structure, a second-level refrigeration structure and a heating structure, the temperature control cavity has a first temperature control cavity and a second temperature control cavity, the first temperature control cavity is located on one side of the mixed air cavity, the second temperature control cavity is located on the other side of the mixed air cavity, the first-level refrigeration structure is arranged in the first temperature control cavity, the second-level refrigeration structure and the heating structure are arranged in the second temperature control cavity, and the first temperature control cavity and the second temperature control cavity are in communication with each other.

[0014] In an alternative embodiment, a dehumidification cavity is arranged between the first temperature control cavity and the second temperature control cavity, and a dehumidification runner is arranged in the dehumidification cavity, and the dehumidification cavity is in communication with the first temperature control cavity and the second temperature control cavity respectively.

[0015] In an alternative embodiment, a regeneration assembly is further included, the regeneration assembly comprises a regeneration fan, a regeneration air inlet pipe, a regeneration air outlet pipe and an electric heating regenerator, the regeneration fan is arranged on the shell, the regeneration fan is in communication with the electric heating regenerator, one end of the regeneration air inlet pipe is in communication with the electric heating regenerator, the other end of the regeneration air inlet pipe is in communication with the outdoor, the two ends of the regeneration air outlet pipe are in communication with the regeneration fan and the exhaust air pipe respectively, and the electric heating regenerator is connected with the dehumidification runner.

[0016] In an alternative embodiment, the sensors include temperature and humidity sensors, air volume sensors, and pressure difference sensors, the temperature and humidity sensors are respectively arranged between the fresh air pipe, the air supply pipe, the first return air pipe, the dehumidification cavity and the first temperature control cavity, between the dehumidification cavity and the second temperature control cavity, between the secondary refrigeration structure and the heating structure, and in the main mirror chamber, the air volume sensors are respectively arranged at the air intake of the fresh air pipe, the air supply port of the air supply pipe, and the return air port of the first return air pipe, and the pressure difference sensors are arranged at the exhaust assembly, the air mixing cavity, and the air supply assembly.

[0017] In an alternative embodiment, the air mixing cavity and the return air cavity are connected through an air valve.

[0018] In an alternative embodiment, a tracking frame is arranged in the main mirror chamber, the tracking frame is provided with a first return air port, the tracking frame has a cavity, the first return air port respectively communicates with the cavity and the main mirror chamber, the main mirror chamber has an underlying space below, the cavity communicates with the underlying space, the underlying space has a second return air pipe therein, one end of the second return air pipe communicates with the underlying space, and the other end of the second return air pipe communicates with the first return air pipe.

[0019] In an alternative embodiment, the return air assembly further has a plurality of second return air ports, the plurality of second return air ports are arranged in a ring shape with the tracking frame as the center, the air supply assembly further has a plurality of air supply ports, the plurality of air supply ports are arranged in a ring shape with the tracking frame as the center, the diameter of the ring where the air supply ports are located is greater than the diameter of the ring where the second return air ports are located, the plurality of second return air ports communicate with the first return air pipe, and the plurality of air supply ports communicate with the air supply pipe.

[0020] In an alternative embodiment, the air supply port is an adjustable spherical air port, an actuator is arranged on the adjustable spherical air port, and the actuator is connected with the adjustable spherical air port to drive the adjustable spherical air port to rotate and adjust the air supply angle.

[0021] In an alternative embodiment, the air supply port is connected with the air supply pipe through an air supply branch pipe, the air supply branch pipe is perpendicular to the bottom surface of the main mirror chamber, one end of the air supply branch pipe connected with the air supply port is higher than the bottom surface of the main mirror chamber, and the air supply branch pipe is wrapped with an aluminum foil heat preservation layer.

[0022] Beneficial effects:

[0023] The utility model provides a kind of full air air conditioning system for telescope dome heat control, air return assembly, air supply assembly and temperature control assembly are integrated in shell, can make the whole full air air conditioning system for telescope dome heat control Simple structure, control is convenient, simultaneously, the full air air conditioning system for telescope dome heat control is set in primary mirror room outside, avoid the problem that vibration, heat dissipation generated in air conditioning operation will be adversely affected to precision optical instrument, effectively guarantee the precision of telescope, further, by the flexible switching of different component functions, meet the heat control demand of telescope dome under complex and changeable environment, improve its scientific benefit 。 SHEET

[0024] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description, obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating labor.

[0025] Figure 1 It is a schematic view of the full air air conditioning system for telescope dome heat control of the utility model embodiment;

[0026] Figure 2 It is a schematic view of the shell of the utility model embodiment;

[0027] Figure 3 It is a control unit schematic view of the full air air conditioning system for telescope dome heat control of the utility model embodiment;

[0028] Mark explanation:

[0029] 1. Housing; 101. Return air chamber; 102. Mixing air chamber; 103. Temperature control chamber; 1031. First temperature control chamber; 1032. Second temperature control chamber; 104. Supply air chamber; 105. Exhaust air chamber; 106. Dehumidification chamber; 2. Return air assembly; 201. First return air duct; 202. First return air outlet; 203. Second return air duct; 204. Second return air outlet; 3. Supply air assembly; 301. Fresh air duct; 302. Supply air duct; 303. Supply air outlet; 304. Supply air branch duct; 305. Supply air header; 4. Temperature control assembly; 401. 1. Primary refrigeration structure; 402. Secondary refrigeration structure; 5. Main mirror chamber; 6. Exhaust assembly; 601. Exhaust duct; 602. Exhaust manifold; 7. Exhaust trench; 8. Regeneration assembly; 801. Regeneration fan; 802. Regeneration inlet duct; 803. Regeneration exhaust duct; 9. Tracking frame; 10. Lower space; 11. Primary filter; 12. Secondary filter; 13. Exhaust fan; 14. Supply fan; 15. Heating structure; a. Temperature and humidity sensor; b. Air volume sensor; c. Differential pressure sensor; d. Air valve; e. Control valve. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0031] The following is combined Figures 1 to 3 The following describes embodiments of the present invention.

[0032] According to an embodiment of the present invention, an all-air air conditioning system for thermal control of a telescope dome is provided, comprising: a housing 1, a return air assembly 2, an air supply assembly 3, a temperature control assembly 4, and a detection assembly.

[0033] Specifically, the return air assembly 2 is housed within the casing 1, and includes a first return air duct 201 connected to the main mirror chamber 5. The supply air assembly 3 is also housed within the casing 1, and includes a fresh air duct 301 and a supply air duct 302. The fresh air duct 301 connects to the outside, and the supply air duct 302 connects to the main mirror chamber 5. The temperature control assembly 4 is housed within the casing 1 and is connected to both the fresh air duct 301 and the supply air duct 302. The temperature control assembly 4 is used to heat or cool the air in the supply air duct. The detection assembly includes sensors located in the main mirror chamber 5, the supply air duct, and the outside. These sensors are connected to the temperature control assembly 4 to transmit the detected temperature information.

[0034] In the embodiment, the air outlet of the fresh air pipe 301 is communicated with the temperature control assembly 4, the air inlet of the fresh air pipe 301 is arranged outdoors, outdoor air can enter the temperature control assembly 4 through the fresh air pipe 301, the air inlet of the fresh air pipe 301 is arranged at the outer wall of the air conditioner room, the air inlet of the fresh air pipe 301 adopts a rainproof louver air inlet, the temperature control assembly 4 can heat or cool the air, the air after heating or cooling is delivered to the primary mirror room 5 through the air supply pipe 302, so as to reduce the temperature difference between the primary mirror room 5 and the outdoor, the air in the primary mirror room 5 is discharged from the primary mirror room 5 through the first return air pipe 201, and the first return air pipe 201 and the air supply pipe 302 cooperate to realize air circulation in the primary mirror room 5. The primary mirror room 5, the air supply pipe and the outdoor are provided with sensors, the sensors can detect temperature, humidity, air volume and pressure difference, the sensors can transmit the detected data to the control system, the control system is signal connected with the temperature control assembly 4, the control system controls the temperature control assembly 4 to heat or cool the air according to the temperature difference, pressure difference and humidity information of the primary mirror room 5 and the outdoor, and when the data information is greater than or less than the set value, the control system can alarm.

[0035] It should be noted that the return air assembly 2, the air supply assembly 3 and the temperature control assembly 4 are integrated in the shell 1, so that the whole air conditioner system for the thermal control of the telescope dome has a simple structure and is convenient to control, at the same time, the air conditioner system for the thermal control of the telescope dome is arranged outside the primary mirror room 5, so that the problem that vibration and heat dissipation generated during air conditioner operation will adversely affect the precision optical instrument is avoided, and the precision of the telescope is effectively ensured.

[0036] In one embodiment, the shell 1 has a return air cavity 101, a mixed air cavity 102, a temperature control cavity 103 and an air supply cavity 104, the return air cavity 101 is located on one side of the mixed air cavity 102, the air supply cavity 104 is arranged on the side of the mixed air cavity 102 away from the return air cavity 101, the temperature control cavity 103 is arranged between the mixed air cavity 102 and the air supply cavity 104, the other end of the first return air pipe 201 is communicated with the return air cavity 101, the other end of the fresh air pipe 301 is communicated with the mixed air cavity 102, the other end of the air supply pipe 302 is communicated with the air supply cavity 104, the temperature control assembly 4 is arranged in the temperature control cavity 103, and the mixed air cavity 102, the temperature control cavity 103 and the air supply cavity 104 are communicated in sequence.

[0037] In the embodiment, as Figure 2As shown, the air supply cavity 104, the temperature control cavity 103, the air mixing cavity 102 and the air return cavity 101 are sequentially arranged in the casing 1 from left to right, the air outlet of the fresh air pipe 301 is communicated with the air mixing cavity 102, the air mixing cavity 102 is communicated with the temperature control cavity 103, the outdoor air enters the air mixing cavity 102 through the fresh air pipe 301, and then enters the temperature control cavity 103 through the air mixing cavity 102, the temperature control assembly 4 is arranged in the temperature control cavity 103, the temperature control assembly 4 can heat or cool the air entering the temperature control cavity 103, the temperature control cavity 103 is communicated with the air supply cavity 104, the air heated or cooled by the temperature control assembly 4 flows into the air supply cavity 104, the air inlet of the air supply pipe 302 is communicated with the air supply cavity 104, and the air in the air supply cavity 104 enters the main mirror chamber 5 through the air supply pipe 302. The air outlet of the first air return pipe 201 is communicated with the air return cavity 101, the air in the main mirror chamber 5 enters the air return cavity 101 through the first air return pipe 201, and the air return cavity 101 can discharge the air to the outdoor.

[0038] Specifically, the air supply assembly 3 further has an air supply fan 14, the air supply fan 14 is arranged in the air supply cavity 104, and the air supply fan 14 can suck the outdoor air into the casing 1 through the fresh air pipe 301 and send the air into the main mirror chamber 5 through the air supply pipe 302. The air mixing cavity 102 and the air supply cavity 104 are respectively provided with a primary filter 11 and a medium filter 12, the filtering grade of the primary filter 11 is G4, and the filtering grade of the medium filter 12 is F7. The primary filter 11 can perform primary filtration on the air entering the air mixing cavity 102, and the medium filter 12 can perform secondary filtration on the air.

[0039] Specifically, the side wall of the air return cavity 101 has a flexible joint, the air return cavity 101 is communicated with the first air return pipe 201 through the flexible joint, the side wall of the air mixing cavity 102 has a flexible joint, the air mixing cavity 102 is communicated with the fresh air pipe 301 through the flexible joint, and the side wall of the air supply cavity 104 has a flexible joint. The air supply cavity 104 is communicated with the air supply pipe 302 through the flexible joint.

[0040] In an embodiment, the casing 1 further has an exhaust cavity 105, the exhaust cavity 105 is arranged on the side of the air return cavity 101 away from the air mixing cavity 102, the exhaust cavity 105 is provided with an exhaust assembly 6, the exhaust cavity 105 is communicated with the air return cavity 101, and the exhaust assembly 6 has an exhaust pipe 601, the two ends of the exhaust pipe 601 are respectively communicated with the exhaust cavity 105 and the exhaust ditch 7.

[0041] In this embodiment, as Figure 2As shown, the exhaust cavity 105 is arranged on the right side of the return air cavity 101, the exhaust cavity 105 is communicated with the return air cavity 101, the exhaust cavity 105 is provided with an exhaust assembly 6, the exhaust assembly 6 includes an exhaust pipe 601 and an exhaust fan 13, the side wall of the exhaust cavity 105 has a flexible joint, the exhaust cavity 105 is communicated with the air inlet of the exhaust pipe 601 through the flexible joint, the exhaust fan 13 can suck the air in the return air cavity 101 into the exhaust cavity 105, and the air is discharged from the casing 1 through the exhaust pipe 601, and the air outlet of the exhaust pipe 601 is connected with the exhaust ditch 7.

[0042] Specifically, the exhaust pipe 601 is provided with an exhaust header 602, and the exhaust header 602 is provided with sound insulation cotton. The air supply pipe 302 is provided with an air supply header 305, and the air supply header 305 is provided with sound insulation cotton.

[0043] In one embodiment, the temperature control assembly 4 has a first refrigeration structure 401, a second refrigeration structure 402 and a heating structure 15, the temperature control cavity 103 has a first temperature control cavity 1031 and a second temperature control cavity 1032, the first temperature control cavity 1031 is located on one side of the mixed air cavity 102, the second temperature control cavity 1032 is located on the other side of the mixed air cavity 102, the first refrigeration structure 401 is arranged in the first temperature control cavity 1031, the second refrigeration structure 402 and the heating structure 15 are arranged in the second temperature control cavity 1032, and the first temperature control cavity 1031 and the second temperature control cavity 1032 are communicated with each other.

[0044] In this embodiment, as shown in the figure, Figure 2 The left side of the mixed air cavity 102 is the first temperature control cavity 1031, the left side of the first temperature control cavity 1031 is the second temperature control cavity 1032, the first temperature control cavity 1031 is communicated with the second temperature control cavity 1032 and the mixed air cavity 102 respectively, and the second temperature control cavity 1032 is communicated with the air supply cavity 104. The first refrigeration structure 401 and the second refrigeration structure 402 are both water-cooled surface coolers, the water-cooled surface cooler is installed on the windward surface in the cavity, the refrigeration capacity of the water-cooled surface cooler of the first refrigeration structure 401 is 120 k W , the cold source is the chilled water provided by the normal temperature cold water unit, the temperature is 1℃-6℃, the two are connected through the chilled water pipe, the refrigeration capacity of the water-cooled surface cooler of the second refrigeration structure 402 is 200 kW , the cold source is the chilled water provided by the low-temperature cold water unit, the temperature is minus 10℃-minus 6℃, the two are connected through the chilled water pipe. The heating structure 15 is an electric heater, the heating capacity of the electric heater is 160 k WThe electric heater is installed vertically on the windward side of the cavity. The control system controls the primary refrigeration structure 401, the secondary refrigeration structure 402, and the heating structure 15 to cool or heat the air. When the primary refrigeration structure 401 cannot meet the cooling demand, the control system shuts down the primary refrigeration structure 401 and starts the secondary refrigeration structure 402. When cooling or heating is required, the control system only needs to turn on the refrigeration structure or the heating structure.

[0045] In one embodiment, a dehumidification chamber 106 is provided between the first temperature control chamber 1031 and the second temperature control chamber 1032. A dehumidification wheel is provided in the dehumidification chamber 106, and the dehumidification chamber 106 is connected to the first temperature control chamber 1031 and the second temperature control chamber 1032 respectively.

[0046] In this embodiment, as Figure 2 As shown, a dehumidification chamber 106 is provided between the first temperature control chamber 1031 and the second temperature control chamber 1032. The control system is connected to the dehumidification wheel by a signal, and the control system can control the dehumidification wheel to start dehumidifying the air.

[0047] In one embodiment, a regeneration component 8 is also included. The regeneration component 8 includes a regeneration fan 801, a regeneration air inlet duct 802, a regeneration air outlet duct 803, and an electric heating regenerator. The regeneration fan 801 is mounted on the housing 1 and is connected to the electric heating regenerator. One end of the regeneration air inlet duct 802 is connected to the electric heating regenerator, and the other end of the regeneration air inlet duct 802 is connected to the outside. Both ends of the regeneration air outlet duct 803 are connected to the regeneration fan 801 and the air outlet duct 801, respectively. The electric heating regenerator is connected to the dehumidification rotor.

[0048] In this embodiment, as Figure 2 As shown, the electric heating regenerator is located on one side of the dehumidification rotor. The fan blades of the dehumidification rotor can extend into the electric heating regenerator. The control system is connected to the regeneration fan 801 and the electric heating regenerator. The regeneration fan 801 can draw outdoor air into the electric heating regenerator through the regeneration air inlet pipe 802. The electric heating regenerator can heat the air to dry the fan blades of the dehumidification rotor. The regeneration fan 801 can draw the air in the electric heating regenerator into the regeneration exhaust pipe 803. The air in the regeneration exhaust pipe 803 enters the exhaust pipe 601 and is discharged from the air outlet of the exhaust pipe 601.

[0049] In one embodiment, the sensors include temperature and humidity sensors a, air volume sensors b, and pressure difference sensors c, the temperature and humidity sensors a are respectively arranged between the fresh air pipe 301, the supply air pipe 302, the first return air pipe 201, the dehumidification cavity 106 and the first temperature control cavity 1031, between the dehumidification cavity 106 and the second temperature control cavity 1032, between the secondary refrigeration structure 402 and the heating structure 15, and in the main mirror chamber 5, the air volume sensors b are respectively arranged at the air inlet of the fresh air pipe 301, the air outlet 303 of the supply air pipe 302, and the air return port of the first return air pipe 201, and the pressure difference sensors c are arranged at the exhaust air assembly 6, the air mixing cavity 102, and the supply air assembly 3.

[0050] In the present embodiment, as shown in Figure 3 , the control system is in signal connection with the temperature and humidity sensors a, the air volume sensors b, and the pressure difference sensors c, respectively, the temperature and humidity sensors a, the air volume sensors b, and the pressure difference sensors c can transmit the monitored information to the control system, and the control system starts the primary refrigeration structure 401, the secondary refrigeration structure 402, the heating structure 15, the dehumidification runner, and the regeneration assembly 8 according to the data information.

[0051] In one embodiment, the air mixing cavity 102 and the return air cavity 101 are communicated through the air valve d.

[0052] In the present embodiment, the control system is in signal connection with the air valve d, and the control system can control the air valve d to be opened, so that the air mixing cavity 102 and the return air cavity 101 are communicated with each other, the air in the return air cavity 101 can enter the air mixing cavity 102, and the air in the return air cavity 101 can be effectively utilized.

[0053] In one embodiment, the main mirror chamber 5 is provided with a tracking frame 9, the tracking frame 9 is provided with a first air return port 202, the tracking frame 9 has a cavity, the first air return port 202 respectively communicates the cavity and the main mirror chamber 5, the main mirror chamber 5 has a lower space 10 below, the cavity communicates with the lower space 10, the lower space 10 has a second return air pipe 203, one end of the second return air pipe 203 communicates with the lower space 10, and the other end of the second return air pipe 203 communicates with the first return air pipe 201.

[0054] In the present embodiment, as shown in Figure 1 , a plurality of first air return ports 202 are formed on the tracking frame 9, the first air return ports 202 respectively communicate the cavity and the main mirror chamber 5, the air in the main mirror chamber 5 can enter the cavity, the cavity communicates with the lower space 10, the air can enter the lower space 10 through the cavity and be sucked into the first air return port 202 by the second air return port 204.

[0055] In one embodiment, the air return assembly 2 further has a plurality of second air return openings 204 arranged annularly with the tracking rack 9 as the center, and the air supply assembly 3 further has a plurality of air supply openings 303 arranged annularly with the tracking rack 9 as the center, the air supply openings 303 are located in a circular ring with a larger diameter than the circular ring in which the second air return openings 204 are located, the plurality of air return openings are in communication with the first air return pipe 201, and the plurality of air supply openings 303 are in communication with the air supply pipe 302.

[0056] In the embodiment, as shown in Figure 1 , the second air return openings 204 and the air supply openings 303 are both annularly arranged, the diameters of the circular rings in which the second air return openings 204 and the air supply openings 303 are located are different, the diameter of the circular ring in which the air supply openings 303 are located is larger than the diameter of the circular ring in which the second air return openings 204 are located, and the air supply openings 303 are located outside the second air return openings 204. The second air return openings 204 are ground single-layer louver air return openings, and the second air return openings 204 have filter screens and regulating valves.

[0057] Preferably, the air return assembly 2 further has six second air return openings 204, and the air supply assembly 3 further has six air supply openings 303.

[0058] In the embodiment, as shown in Figure 1 , the air supply openings 303 are adjustable spherical air supply openings, and actuators are arranged on the adjustable spherical air supply openings, the actuators are connected with the adjustable spherical air supply openings to drive the adjustable spherical air supply openings to rotate and adjust the air supply angle. A control system is connected with the actuators, and the control system drives the adjustable spherical air supply openings to rotate through the actuators.

[0059] In the embodiment, as shown in Figure 1 , the air supply openings 303 are in communication with the air supply pipe 302 through air supply branch pipes 304, the air supply branch pipes 304 are perpendicular to the bottom surface of the main mirror chamber 5, one end of the air supply branch pipes 304 connected with the air supply openings 303 is higher than the bottom surface of the main mirror chamber 5, and the air supply branch pipes 304 are wrapped with aluminum foil heat preservation layers.

[0060] Specifically, the full-air air conditioning system for the thermal control of the telescope dome has the following modes:

[0061] As shown in Figure 3As shown, when the outdoor temperature Tw ≥ 0℃, the all-air air conditioning system used for the thermal control of the telescope dome operates in air conditioning mode. At this time, air valve d1 is closed, air valves d2, d3, and d5 are open, air valve d4 is opened to opening degree I (corresponding to the minimum fresh air volume), exhaust fan 13 is closed, supply fan 14 is open, and heating structure 15 is closed. Further, when Tw ≥ 14℃, the regulating valve e1 of the primary refrigeration structure 401 is opened and adjusted to an appropriate opening degree, and the secondary refrigeration structure 402 and dehumidification rotor are closed; when 14℃ > Tw ≥ 7℃, the regulating valves e1 and e2 of the primary refrigeration structure 401 and the secondary refrigeration structure 402 are opened and adjusted to an appropriate opening degree, and the dehumidification rotor is open; when 7℃ > Tw ≥ 0℃, the regulating valve e2 of the secondary refrigeration structure 402 is opened and adjusted to an appropriate opening degree, the dehumidification rotor is open, and the primary refrigeration structure 401 is closed.

[0062] like Figure 3 As shown, when the outdoor temperature Tw < 0℃, the all-air air conditioning system used for the thermal control of the telescope dome operates in ventilation and cooling mode. At this time, air valve d3 is closed, air valves d1, d2, and d5 are open, air valve d4 is opened to opening degree II (corresponding to the maximum fresh air volume), exhaust fan 13 and supply fan 14 are on, and the primary cooling structure 401, secondary cooling structure 402, dehumidification impeller, and heating structure 15 are closed. In this mode, the system exhaust volume is 80% of the intake volume, and a slight positive pressure is maintained inside the dome.

[0063] like Figure 3 As shown, when the dome is opened, the all-air air conditioning system used for the thermal control of the telescope dome operates in observation ventilation mode. At this time, air valves d3, d4, and d5 are closed, air valves d1 and d2 are open, exhaust fan 13 is on, supply fan 14 is off, and the primary cooling structure 401, secondary cooling structure 402, dehumidification impeller, and heating structure 15 are off. In this mode, natural air supply is achieved through the dome opening.

[0064] like Figure 3 As shown, when the telescope needs maintenance in winter, in order to improve the working environment for personnel, the all-air air conditioning system used for the thermal control of the telescope dome operates in winter heating mode. At this time, air valves d2, d3, and d5 are open, air valves d1 and d4 are closed, exhaust fan 13 is closed, exhaust fan 13 is open, heating structure 15 is open, primary cooling structure 401, secondary cooling structure 402 and dehumidification wheel are closed, and indoor air is circulated for heating.

[0065] The all-air air conditioning system for thermal control of a telescope dome disclosed in this embodiment meets the thermal control requirements of the telescope dome in complex and variable environments by flexibly switching the functions of different components, thereby improving its scientific benefits. 。

[0066] Specifically, the full-air air conditioning system for the telescope dome heat control has the following safety modes:

[0067] When the pressure difference ΔP1 of the primary filter 11 is greater than or equal to 100 Pa, the system alarms; when the pressure difference ΔP2 of the medium filter 12 is greater than or equal to 200 Pa, the system alarms.

[0068] When the pressure difference ΔP3 of the supply fan 14 is equal to 0, the system alarms; when the pressure difference ΔP4 of the exhaust fan 13 is equal to 0, the system alarms.

[0069] The heating structure 15 is interlocked with the supply fan 14 to start and stop; when starting, the supply fan 14 is started first, and then the heating structure 15 is started; when stopping, the heating structure 15 is stopped first, and then the supply fan 14 is stopped after a delay of 5 minutes.

[0070] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the appended claims.

Claims

1. An all-air air conditioning system for thermal control of a telescope dome, characterized in that, include: Shell (1); Return air assembly (2), the return air assembly (2) is disposed in the housing (1), the return air assembly (2) has a first return air duct (201), the first return air duct (201) is connected to the main mirror chamber (5); An air supply assembly (3) is disposed inside the housing (1). The air supply assembly (3) has a fresh air duct (301) and an air supply duct (302). The fresh air duct (301) is connected to the outside, and the air supply duct (302) is connected to the main mirror chamber (5). Temperature control component (4), the temperature control component (4) is disposed in the housing (1), the temperature control component (4) is connected to the fresh air duct (301) and the air supply duct (302) respectively, and the temperature control component (4) is used to heat or cool the air in the air supply duct; The detection component includes sensors installed in the main mirror chamber (5), the air supply duct and the outside, and the sensors are connected to the temperature control component (4) to transmit the detected temperature information to the temperature control component (4).

2. The all-air air conditioning system for thermal control of a telescope dome according to claim 1, characterized in that, The housing (1) has a return air chamber (101), a mixing air chamber (102), a temperature control chamber (103), and a supply air chamber (104). The return air chamber (101) is located on one side of the mixing air chamber (102). The supply air chamber (104) is located on the side of the mixing air chamber (102) away from the return air chamber (101). The temperature control chamber (103) is located between the mixing air chamber (102) and the supply air chamber (104). The other end of the first return air duct (201) is connected to the return air chamber (101). The other end of the fresh air duct (301) is connected to the mixing air chamber (102). The other end of the supply air duct (302) is connected to the supply air chamber (104). The temperature control component (4) is located in the temperature control chamber (103). The mixing air chamber (102), the temperature control chamber (103), and the supply air chamber (104) are connected in sequence.

3. The all-air air conditioning system for thermal control of a telescope dome according to claim 2, characterized in that, The housing (1) also has an exhaust chamber (105), which is located on the side of the return air chamber (101) away from the mixing chamber (102). An exhaust assembly (6) is provided in the exhaust chamber (105). The exhaust chamber (105) is connected to the return air chamber (101). The exhaust assembly (6) has an exhaust pipe (601), and the two ends of the exhaust pipe (601) are connected to the exhaust chamber (105) and the exhaust trench (7), respectively.

4. The all-air air conditioning system for thermal control of a telescope dome according to claim 3, characterized in that, The temperature control component (4) has a primary refrigeration structure (401), a secondary refrigeration structure (402), and a heating structure (15). The temperature control cavity (103) has a first temperature control cavity (1031) and a second temperature control cavity (1032). The first temperature control cavity (1031) is located on one side of the mixing chamber (102), and the second temperature control cavity (1032) is located on the other side of the mixing chamber (102). The primary refrigeration structure (401) is disposed in the first temperature control cavity (1031), and the secondary refrigeration structure (402) and the heating structure (15) are disposed in the second temperature control cavity (1032). The first temperature control cavity (1031) and the second temperature control cavity (1032) are interconnected.

5. The all-air air conditioning system for thermal control of a telescope dome according to claim 4, characterized in that, A dehumidification chamber (106) is provided between the first temperature control chamber (1031) and the second temperature control chamber (1032). A dehumidification wheel is provided in the dehumidification chamber (106). The dehumidification chamber (106) is connected to the first temperature control chamber (1031) and the second temperature control chamber (1032) respectively.

6. The all-air air conditioning system for thermal control of a telescope dome according to claim 5, characterized in that, It also includes a regeneration component (8), which includes a regeneration fan (801), a regeneration air inlet pipe (802), a regeneration air outlet pipe (803), and an electric heating regenerator. The regeneration fan (801) is mounted on the housing (1) and is connected to the electric heating regenerator. One end of the regeneration air inlet pipe (802) is connected to the electric heating regenerator, and the other end of the regeneration air inlet pipe (802) is connected to the outside. Both ends of the regeneration air outlet pipe (803) are connected to the regeneration fan (801) and the air outlet pipe (601) respectively. The electric heating regenerator is connected to the dehumidification rotor.

7. The all-air air conditioning system for thermal control of a telescope dome according to claim 6, characterized in that, The sensors include a temperature and humidity sensor (a), an air volume sensor (b), and a differential pressure sensor (c). The temperature and humidity sensor (a) is respectively disposed in the fresh air duct (301), the supply air duct (302), the first return air duct (201), between the dehumidification chamber (106) and the first temperature control chamber (1031), between the dehumidification chamber (106) and the second temperature control chamber (1032), between the secondary refrigeration structure (402) and the heating structure (15), and in the main mirror chamber (5). The air volume sensor (b) is respectively disposed in the air intake of the fresh air duct (301), the air outlet (303) of the supply air duct (302), and the return air outlet of the first return air duct (201). The differential pressure sensor (c) is disposed in the exhaust assembly (6), the mixing chamber (102), and the supply air assembly (3).

8. The all-air air conditioning system for thermal control of a telescope dome according to claim 3, characterized in that, The mixing chamber (102) and the return air chamber (101) are connected by a damper (d).

9. The all-air air conditioning system for thermal control of a telescope dome according to any one of claims 1 to 8, characterized in that, A tracking frame (9) is provided inside the main mirror chamber (5). A first return air vent (202) is provided on the tracking frame (9). The tracking frame (9) has a cavity. The first return air vent (202) is connected to the cavity and the main mirror chamber (5). A lower space (10) is provided below the main mirror chamber (5). The cavity is connected to the lower space (10). A second return air duct (203) is provided in the lower space (10). One end of the second return air duct (203) is connected to the lower space (10), and the other end of the second return air duct (203) is connected to the first return air duct (201).

10. The all-air air conditioning system for thermal control of a telescope dome according to claim 9, characterized in that, The return air assembly (2) also has a plurality of second return air inlets (204), which are arranged in a ring around the tracking frame (9). The air supply assembly (3) also has a plurality of air supply outlets (303), which are arranged in a ring around the tracking frame (9). The diameter of the ring where the air supply outlets (303) are located is larger than the diameter of the ring where the second return air inlets are located. The plurality of second return air inlets (204) are connected to the first return air duct (201), and the plurality of air supply outlets (303) are connected to the air supply duct (302).

11. The all-air air conditioning system for thermal control of a telescope dome according to claim 10, characterized in that, The air outlet (303) is an adjustable spherical air outlet. An actuator is provided on the adjustable spherical air outlet. The actuator is connected to the adjustable spherical air outlet to drive the adjustable spherical air outlet to rotate and adjust the air supply angle.

12. The all-air air conditioning system for thermal control of a telescope dome according to claim 10, characterized in that, The air outlet (303) is connected to the air supply pipe (302) through the air supply branch pipe (304). The air supply branch pipe (304) is perpendicular to the bottom surface of the main mirror chamber (5). One end of the air supply branch pipe (304) connected to the air outlet (303) is higher than the bottom surface of the main mirror chamber (5). The air supply branch pipe (304) is wrapped with an aluminum foil insulation layer.

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