Anti-freezing protection system

Abstract

The utility model discloses an anti-freezing protection system, which belongs to the field of indoor cooling and comprises an indoor evaporator case, U-shaped pipes are uniformly laid in the indoor evaporator case, two ends of each U-shaped pipe are respectively provided with a water inlet end and a water outlet end, and the water inlet end and the water outlet end are arranged on one side outside the indoor evaporator case. A control valve seat is arranged at the end, close to the water inlet end, of the surface of the U-shaped pipe, the control valve seat is arranged in an indoor evaporator case, a connecting shaft is rotationally installed on the upper portion in the control valve seat, a ball valve used for controlling the flow in the U-shaped pipe is arranged at the bottom of the connecting shaft, and a gear is arranged at the top of the connecting shaft. The gear is arranged on the upper surface of the control valve seat, a corresponding control valve is arranged at the water inlet end of an indoor evaporator pipeline, and when the stability of the surface of the pipeline is lower than a set threshold value, the temperature sensing liquid shrinks so as to push the ball valve to rotate through an internal mechanism, then the flow of a refrigerant is automatically adjusted, and the surface of an evaporator is prevented from being frozen.

Description

Technical Field

[0001] The utility model relates to the field of indoor cooling, and more specifically, to an anti-freezing protection system. Background Art

[0002] In the cooling system of a data center, it is necessary to transfer the refrigerant inside the equipment to the evaporator in the room. Through the cooperation of the evaporator and the fan, the cooling work of the room is realized. However, during the working process, due to the low temperature of the evaporator pipeline, when the temperature is lower than its dew point, condensate will be generated on the pipeline surface, and even the phenomenon of ice formation on the evaporator surface will occur, affecting the use effect of the entire air conditioning system. Summary of the Utility Model

[0003] 1. Technical Problems to be Solved

[0004] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide an anti-freezing protection system, which can automatically control the flow rate of the refrigerant according to the change of the temperature of the internal pipeline of the evaporator to ensure that the evaporator is within a reasonable temperature range and prevent ice formation on the evaporator surface.

[0005] 2. Technical Solutions

[0006] To solve the above problems, the utility model adopts the following technical solutions.

[0007] An anti-freezing protection system includes an indoor evaporator chassis. The U-shaped pipes are evenly laid inside the indoor evaporator chassis. Both ends of the U-shaped pipes are respectively provided with a water inlet end and a water outlet end, and the water inlet end and the water outlet end are placed on one side outside the indoor evaporator chassis. A control valve seat is arranged at one end of the U-shaped pipe surface close to the water inlet end, and the control valve seat is arranged inside the indoor evaporator chassis. A connecting shaft is rotatably installed above the control valve seat. A ball valve for controlling the flow rate inside the U-shaped pipe is arranged at the bottom of the connecting shaft. A gear is arranged at the top of the connecting shaft, and the gear is placed on the upper surface of the control valve seat. A liquid storage cylinder is installed at one end of the U-shaped pipe surface close to the control valve seat. A piston head is slidably installed inside the liquid storage cylinder. One end of the piston head is provided with a sliding rod, and the sliding rod penetrates through the end surface of the liquid storage cylinder. A return spring is placed inside the liquid storage cylinder, and the return spring is placed on the side of the liquid storage cylinder away from the sliding rod. A temperature-sensitive liquid is injected into the side of the liquid storage cylinder away from the return spring. An adjusting sleeve is arranged at the end of the sliding rod away from the piston head. An extension plate is installed at the end of the adjusting sleeve. The extension plate slides on the upper surface of the control valve seat. A toothed rod is arranged at the end of the extension plate, and the toothed rod meshes with the gear.

[0008] Furthermore, the adjusting sleeve is slidably installed at the end of the sliding rod, and a locking bolt is screwed on the surface of the adjusting sleeve. The adjusting sleeve is fixed to the sliding rod through the locking bolt.

[0009] Furthermore, a fixing bolt is arranged on a side of the upper surface of the control valve seat close to the liquid storage cylinder, a track groove is opened on the surface of the extension plate, and the fixing bolt is placed inside the track groove.

[0010] Furthermore, a heat-conducting seat is provided at the bottom of the liquid storage cylinder, and the cross-section of the heat-conducting seat is C-shaped. The heat-conducting seat is clamped on the upper surface of the U-shaped tube, and clamping rings are hinged on both sides of the bottom of the heat-conducting seat. The side of the clamping ring facing away from the rotating axis is fixed to one side of the heat-conducting seat by bolts.

[0011] Furthermore, an inspection cover is installed on one side of the upper surface of the indoor evaporator chassis, and the inspection cover is placed directly above the liquid storage cylinder.

[0012] Furthermore, a fan is arranged on the front side of the indoor evaporator chassis, and a mounting base is symmetrically installed on the top of the indoor evaporator chassis.

[0013] 3. Beneficial effects

[0014] Compared with the prior art, the utility model has the following advantages: the utility model provides an antifreeze protection system, in which a corresponding control valve is arranged at the water inlet end of the indoor evaporator pipe. When the stability of the pipe surface is lower than the set threshold, the temperature-sensitive liquid contracts to push the ball valve to rotate through the internal mechanism, and then automatically adjusts the flow rate of the refrigerant to prevent the evaporator surface from freezing, thereby achieving a protective effect on the air-conditioning system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the longitudinal cross-sectional structure of the chassis of the utility model;

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of the liquid storage cylinder of the utility model;

[0018] Figure 4 This is a schematic diagram of the ball valve structure of the utility model;

[0019] Figure 5 For the utility model Figure 3 Schematic diagram of the enlarged structure of area A.

[0020] Explanation of the numbers in the figure: 1. Indoor evaporator chassis; 2. Fan; 3. Mounting seat; 4. U-shaped pipe; 5. Water inlet end; 6. Water outlet end; 7. Inspection cover; 8. Control valve seat; 9. Ball valve; 10. Connecting shaft; 11. Gear; 12. Fixing bolt; 13. Heat transfer seat; 14. Retaining ring; 15. Liquid storage cylinder; 151. Return spring; 16. Piston head; 17. Sliding rod; 18. Adjusting sleeve; 19. Locking bolt; 20. Extension plate; 21. Gear rod; 22. Track groove. Detailed implementation manners

[0021] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model; obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0022] Embodiment:

[0023] Please refer to Figures 1 - 5 As shown, an anti-freezing protection system includes an indoor evaporator chassis 1. A U-shaped tube 4 is evenly laid inside the indoor evaporator chassis 1. An inlet end 5 and an outlet end 6 are respectively arranged at both ends of the U-shaped tube 4. A blower 2 is arranged on the front side of the indoor evaporator chassis 1. Mounting seats 3 are symmetrically installed on the top of the indoor evaporator chassis 1. During installation, the coolant flows into the U-shaped tube 4 through the inlet end 5, and the blower 2 blows air outwards to drive the air flow to take out the temperature on the surface of the U-shaped tube 4. The inlet end 5 and the outlet end 6 are arranged on one side outside the indoor evaporator chassis 1 to facilitate the installation and docking of the pipeline. A control valve seat 8 is arranged at one end of the surface of the U-shaped tube 4 close to the inlet end 5. The control valve seat 8 is arranged inside the indoor evaporator chassis 1. A connecting shaft 10 is rotatably installed above the control valve seat 8. A ball valve 9 for controlling the flow rate inside the U-shaped tube 4 is arranged at the bottom of the connecting shaft 10. A gear 11 is arranged at the top of the connecting shaft 10. The gear 11 is arranged on the upper surface of the control valve seat 8 to drive the angle of the ball valve 9 by controlling the outer gear 11, thereby controlling the flow rate of the U-shaped tube 4.

[0024] Please refer to Figures 2 - 5As shown in the figure, a liquid storage cylinder 15 is installed at one end of the surface of the U-shaped tube 4 close to the control valve seat 8. A piston head 16 is slidably installed inside the liquid storage cylinder 15. One end of the piston head 16 is provided with a sliding rod 17. The sliding rod 17 penetrates through the end surface of the liquid storage cylinder 15. A return spring 151 is placed inside the liquid storage cylinder 15. The return spring 151 is placed on the side of the liquid storage cylinder 15 away from the sliding rod 17. The elastic force of the return spring 151 is used to make the piston head 16 always have a force towards the control valve seat 8 to maintain the extrusion of the temperature-sensitive liquid. Temperature-sensitive liquid is injected into the side of the liquid storage cylinder 15 away from the return spring 151. When the temperature on the surface of the U-shaped tube 4 changes, its heat is transferred to the inside of the liquid storage cylinder 15, so that the temperature-sensitive liquid expands and contracts. When the temperature decreases, the temperature-sensitive liquid shrinks and its volume becomes smaller. At this time, the return spring 151 can push the piston head 16 towards the control valve seat 8. One end of the sliding rod 17 away from the piston head 16 is provided with an adjusting sleeve 18. An extension plate 20 is installed at the end of the adjusting sleeve 18. The extension plate 20 slides on the upper surface of the control valve seat 8. A toothed rod 21 is provided at the end of the extension plate 20. The toothed rod 21 meshes with the gear 11. The cooperation direction should ensure that when the temperature of the U-shaped tube 4 decreases, the temperature-sensitive liquid shrinks. At this time, the gear 11 can be pushed to drive the ball valve 9 to control the flow rate to decrease, so as to reduce the flow rate of the coolant entering the U-shaped tube 4 and prevent the surface of the U-shaped tube 4 from generating condensate or icing due to too low temperature.

[0025] Among them, the temperature-sensitive liquid can adopt common liquids with high thermal expansion coefficients in the market, such as mercury and kerosene, to improve the sensitivity to temperature changes and achieve thermal expansion and contraction.

[0026] Please refer to Figure 5 As shown in the figure, the adjusting sleeve 18 is slidably installed at the end of the sliding rod 17. A locking bolt 19 is screwed on the surface of the adjusting sleeve 18. The adjusting sleeve 18 is fixed to the sliding rod 17 through the locking bolt 19 to adjust the relative position of the toothed rod 21 and keep it fixed, and then adjust the threshold value of the flow rate and temperature change.

[0027] Among them, a fixing bolt 12 is provided on the upper surface of the control valve seat 8 close to the liquid storage cylinder 15. A track groove 22 is opened on the surface of the extension plate 20. The fixing bolt 12 is placed inside the track groove 22, so that the extension plate 20 can only move along the axis of the pipeline to ensure the stability of the extension plate 20 when it moves.

[0028] Please refer to Figure 3 As shown in the figure, a heat conduction seat 13 is provided at the bottom of the liquid storage cylinder 15. The cross section of the heat conduction seat 13 is C-shaped. The heat conduction seat 13 is stuck on the upper surface of the U-shaped tube 4. Clamping rings 14 are hinged on both sides of the bottom of the heat conduction seat 13. One side of the clamping ring 14 away from the rotation axis is fixed to one side of the heat conduction seat 13 through a bolt to improve the convenience of installing the liquid storage cylinder 15 and the U-shaped tube 4.

[0029] Please refer to Figure 1As shown, an inspection cover 7 is installed on one side of the upper surface of the indoor evaporator chassis 1. The inspection cover 7 is placed directly above the liquid storage cylinder 15 to facilitate the inspection and maintenance of the internal mechanism. The inspection cover 7 is flush with the upper surface of the indoor evaporator chassis 1 and is fixed by bolts.

[0030] Working principle: When in use, connect the coolant circulation pipeline to the water inlet end 5 and the water outlet end 6 of the U-shaped tube 4. The coolant enters through the water inlet end 5, first enters the inside of the control valve seat 8, then flows into the inside of the U-shaped tube 4, and is discharged through the water outlet end 6. Start the fan 2 to achieve indoor cooling. When the temperature of the surface of the U-shaped tube 4 changes, its temperature will be transferred to the inside of the liquid storage cylinder 15, causing the temperature-sensitive liquid inside to expand and contract. At the same time, due to the presence of the reset spring 151, the piston head 16 always has the function of returning to the control valve. The force on one side of the seat 8, when the temperature drops, the internal temperature-sensitive liquid contracts, and the thrust of the reset spring 151 on the piston head 16 can make the piston head 16 move to the side of the control valve seat 8, and then drive the gear rod 21 to move, and through the cooperation with the gear 11, the rotation of the ball valve 9 is realized to adjust the flow, and the position of the adjustment sleeve 18 and the slide rod 17 can be adjusted according to the usage, and fixed by the locking bolt 19, and then the threshold of the temperature change is adjusted to prevent the surface of the U-tube 4 from freezing due to condensed water generated on the surface due to too low temperature.

[0031] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. An anti-freezing protection system, comprising an indoor evaporator chassis (1), wherein a U-shaped pipe (4) is evenly laid inside the indoor evaporator chassis (1), and is characterized in that: The two ends of the U-shaped tube (4) are respectively provided with a water inlet end (5) and a water outlet end (6), the water inlet end (5) and the water outlet end (6) are placed on one side of the outside of the indoor evaporator case (1), a control valve seat (8) is provided on the surface of the U-shaped tube (4) at one end close to the water inlet end (5), the control valve seat (8) is placed inside the indoor evaporator case (1), a connecting shaft (10) is rotatably mounted above the inside of the control valve seat (8), a ball valve (9) for controlling the flow rate inside the U-shaped tube (4) is provided at the bottom of the connecting shaft (10), a gear (11) is provided on the top of the connecting shaft (10), the gear (11) is placed on the upper surface of the control valve seat (8), a liquid storage cylinder (15) is installed on the surface of the U-shaped tube (4) at one end close to the control valve seat (8), the liquid storage cylinder (15) A piston head (16) is slidably mounted inside, a slide rod (17) is arranged at one end of the piston head (16), the slide rod (17) penetrates the end surface of the liquid storage cylinder (15), a return spring (151) is arranged inside the liquid storage cylinder (15), the return spring (151) is arranged on the side of the liquid storage cylinder (15) away from the slide rod (17), a temperature-sensitive liquid is injected into the side of the liquid storage cylinder (15) away from the return spring (151), an adjustment sleeve (18) is arranged at one end of the slide rod (17) away from the piston head (16), an extension plate (20) is arranged at the end of the adjustment sleeve (18), the extension plate (20) slides on the upper surface of the control valve seat (8), a gear rod (21) is arranged at the end of the extension plate (20), and the gear rod (21) is meshed with the gear (11).

2. The anti-freezing protection system according to claim 1, characterized in that: The adjusting sleeve (18) is slidably mounted on the end of the slide rod (17); a locking bolt (19) is screwed on the surface of the adjusting sleeve (18); and the adjusting sleeve (18) is fixed to the slide rod (17) via the locking bolt (19).

3. The anti-freezing protection system according to claim 1, characterized in that: A fixing bolt (12) is arranged on the side of the upper surface of the control valve seat (8) close to the liquid storage cylinder (15), a track groove (22) is opened on the surface of the extension plate (20), and the fixing bolt (12) is placed inside the track groove (22).

4. The anti-freezing protection system according to claim 3, characterized in that: A heat-conducting seat (13) is arranged at the bottom of the liquid storage cylinder (15). The cross section of the heat-conducting seat (13) is C-shaped. The heat-conducting seat (13) is clamped on the upper surface of the U-shaped tube (4). Both sides of the bottom of the heat-conducting seat (13) are hinged with clamping rings (14). The side of the clamping ring (14) facing away from the rotating axis is fixed to one side of the heat-conducting seat (13) by bolts.

5. The anti-freezing protection system according to claim 1, characterized in that: An inspection cover plate (7) is installed on one side of the upper surface of the indoor evaporator chassis (1), and the inspection cover plate (7) is placed directly above the liquid storage cylinder (15).

6. The anti-freezing protection system according to claim 1, characterized in that: A fan (2) is arranged on the front side of the indoor evaporator case (1), and a mounting seat (3) is symmetrically mounted on the top of the indoor evaporator case (1).

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