Anti-freezing mechanism of heat pump heating system

Abstract

The utility model discloses a heat pump heating system anti-freezing mechanism which comprises a function box, an inflation pump is installed at the top end of the function box, an air bottle is installed on the left side of the interior of the function box, the inflation end of the inflation pump is connected with an inflation pipe, and the left side of a lower valve is sleeved with a drainage pipe. The other end of the drainage pipe penetrates to the lower part of the functional box, and a middle pipe is communicated between the upper valve and the lower valve. Through the cooperation of the electromagnet, the tension spring and other structures, when sudden power failure occurs, the movable table moves rightwards under the action of the tension spring and finally drives the rotating valve to rotate, the upper valve opens the air blowing pipe and blocks the middle pipe at the moment, and the lower valve opens the water drainage pipe and blocks the middle pipe; in this way, compressed air in the air cylinder can be quickly blown out, static water in the circulating pipeline is blown and discharged, the situation that the heat pump heating system is frozen to crack at the low temperature due to the fact that water exists in the heat pump heating system can be avoided, and economic losses and potential safety accidents of operation are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of heat pump heating, in particular to an antifreeze mechanism for a heat pump heating system. Background Art

[0002] In northern China, heat pump heating systems (coal-to-electricity conversion) are being vigorously promoted for winter heating. Heat pump heating systems are clean and energy-saving, and are the best solution for northern heating under current technical conditions. However, there is currently a defect in heat pump heating and electric heating: their antifreeze measures rely on the operation of the power supply. Once the unit loses power and the user cannot drain the circulating water in the system in time, there is a risk of freezing and cracking. Content of the Utility Model

[0003] The purpose of the utility model is to solve the above technical problems and propose an antifreeze mechanism for a heat pump heating system.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0005] An antifreeze mechanism for a heat pump heating system includes a function box. An air pump is installed at the top of the function box. A gas cylinder is installed on the left side inside the function box. The inflation end of the air pump is connected to an inflation pipe, and the other end of the inflation pipe communicates with the gas cylinder. A water outlet pipe and a water inlet pipe penetrate through the right side of the function box. A upper valve is sleeved at the left end of the water outlet pipe. A blowing pipe is sleeved on the left side of the upper valve. The blowing pipe communicates with the gas cylinder. A lower valve is sleeved at the left end of the water inlet pipe. A drain pipe is sleeved on the left side of the lower valve. The other end of the drain pipe penetrates to the lower part of the function box. An intermediate pipe communicates between the upper valve and the lower valve.

[0006] Preferably, rotatable rotary valves are provided inside both the upper valve and the lower valve. A driving shaft is sleeved in the center of the rotary valve. The other end of the driving shaft penetrates into the function box and is sleeved with a swing rod.

[0007] Preferably, connecting columns are connected to the other ends of the swing rods. The ends of the connecting columns are movably connected with a movable platform that can move left and right.

[0008] Preferably, sliding grooves are formed at both the upper and lower ends of the movable platform. The connecting columns are clamped inside the movable platform through the sliding grooves. A permanent magnet is installed at the left end of the movable platform.

[0009] Preferably, an electromagnet is fixedly installed on the right side surface of the gas cylinder. After the electromagnet is powered on, it adsorbs the permanent magnet and moves it to the left.

[0010] Preferably, a tension spring is connected to the right end of the movable platform. The other end of the tension spring is fixed to the function box.

[0011] Preferably, two pairs of support frames are fixedly installed at the bottom end of the function box. One pair of support frames includes two L-shaped support legs, and positioning holes are penetrated through the L-shaped support legs.

[0012] Preferably, the poles of the electromagnet on the side opposite to the permanent magnet are arranged in the opposite direction after the electromagnet is energized.

[0013] Preferably, two top blocks are installed at the right inner wall of the function box. The other end of the tension spring is located between the two top blocks, and the top blocks are arranged opposite to the moving platform.

[0014] Preferably, the bottom of the drain pipe is higher than the bottoms of the two pairs of support frames.

[0015] The beneficial effects of the present utility model are as follows:

[0016] Through the cooperation of structures such as an electromagnet and a tension spring, when a sudden power failure occurs, the moving platform moves to the right under the action of the tension spring and finally drives the rotary valve to rotate. At this time, the upper valve will open the air blowing pipe and block the middle pipe, and its lower valve will open the drain pipe and block the middle pipe. In this way, the compressed air in the gas cylinder can be quickly blown out, so as to blow and discharge the static water in the circulation pipeline. In this way, it can be avoided that the water stored in the heat pump heating system freezes and cracks at low temperatures. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of an anti-freezing mechanism of a heat pump heating system proposed by the present utility model;

[0018] Figure 2 is an internal structural diagram of an anti-freezing mechanism of a heat pump heating system proposed by the present utility model;

[0019] Figure 3 is a schematic structural diagram of an upper valve and a lower valve of an anti-freezing mechanism of a heat pump heating system proposed by the present utility model;

[0020] Figure 4 is a sectional view of an anti-freezing mechanism of a heat pump heating system proposed by the present utility model.

[0021] In the figure: 1 function box, 2 air inflation pump, 3 air inflation pipe, 4 support frame, 5 water outlet pipe, 6 water inlet pipe, 7 drain pipe, 8 upper valve, 9 lower valve, 10 air blowing pipe, 11 middle pipe, 12 rotary valve, 13 drive shaft, 14 electromagnet, 15 permanent magnet, 16 moving platform, 17 top block, 18 tension spring, 19 swing rod, 20 connecting column, 21 sliding groove, 22 gas cylinder. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with 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.

[0023] Referring to Figures 1-4 , an antifreeze mechanism for a heat pump heating system, including a function box 1. At the bottom end of the function box 1, two pairs of support frames 4 are fixedly installed. One pair of support frames 4 includes two L-shaped support legs, and positioning holes are provided through the L-shaped support legs;

[0024] An air pump 2 is installed at the top end of the function box 1. On the left side inside the function box 1, a gas cylinder 22 is installed. After the pressure in the gas cylinder 22 is insufficient, when the air pump 2 is in the powered-on state, it will automatically inflate the gas cylinder 22. The inflation end of the air pump 2 is connected to an inflation pipe 3, and the other end of the inflation pipe 3 communicates with the gas cylinder 22. A water outlet pipe 5 and a water inlet pipe 6 are provided through the right side of the function box 1. A upper valve 8 is sleeved at the left end of the water outlet pipe 5, and a lower valve 9 is sleeved at the left end of the water inlet pipe 6;

[0025] Further explanation of the upper valve 8 and the lower valve 9: Inside both the upper valve 8 and the lower valve 9, there is a rotatable rotary valve 12. A drive shaft 13 is sleeved at the center of the rotary valve 12. The other end of the drive shaft 13 penetrates to the inside of the function box 1 and is sleeved with a swing rod 19. The swing rod 19 is coaxially connected to the rotary valve 12, that is, the rotary valve 12 and the swing rod 19 have the same rotation angle;

[0026] The other ends of the swing rods 19 are both connected to connecting columns 20. The end of the connecting column 20 is movably connected to a movable table 16 that can move left and right. Sliding grooves 21 are provided at both the upper and lower ends of the movable table 16. The connecting column 20 is clamped inside the movable table 16 through the sliding grooves 21. A permanent magnet 15 is installed at the left end of the movable table 16. Among them, an electromagnet 14 is fixedly installed on the right surface of the gas cylinder 22. After the electromagnet 14 is powered on, it adsorbs the permanent magnet 15 to move leftward; Among them, further explanation of the adsorption of the permanent magnet 15: After the electromagnet 14 is powered on, the magnetic poles of the surface opposite to the permanent magnet 15 are set oppositely. After the permanent magnet 15 is magnetized, it can pull the movable table 16 to move leftward;

[0027] Among them, two top blocks 17 are installed on the right inner wall of the function box 1. The other end of the tension spring 18 is located between the two top blocks 17. The top blocks 17 are arranged opposite to the movable table 16. When the movable table 16 moves to the right, the top blocks 17 can abut against the right surface of the movable table 16, and the tension spring 18 can be received between the two top blocks 17;

[0028] A blow pipe 10 is sleeved on the left side of the upper valve 8. The blow pipe 10 is communicated with the gas cylinder 22. A drain pipe 7 is sleeved on the left side of the lower valve 9. The bottom of the drain pipe 7 is higher than the bottoms of the two pairs of support frames 4, which is beneficial to drainage. The other end of the drain pipe 7 penetrates below the functional box 1. An intermediate pipe 11 is communicated between the upper valve 8 and the lower valve 9.

[0029] The working principle of the present utility model is as follows: When the functional box 1 is in the power-on state (as Figure 4 shown), at this time, the hot water in the heat pump pipeline flows in from the water inlet pipe 6 (as Figure 3 shown), and after being blocked by the two rotary valves 12, it finally flows out from the water outlet pipe 5. After the functional box 1 is powered off, the electromagnet 14 cannot maintain the adsorption of the permanent magnet 15. At this time, the moving platform 16 will move to the right under the action of the tension spring 18. The rightward movement of the moving platform 16 will drive the swing rod 19 to deflect, so that the rotary valve 12 in the upper valve 8 rotates counterclockwise to block the intermediate pipe 11 and open the blow pipe 10; the rotary valve 12 in the lower valve 9 will also block the intermediate pipe 11 and open the drain pipe 7. In this way, the high-pressure gas in the gas cylinder 22 is blown into the circulation pipeline, and the water in the circulation pipeline is discharged from the drain pipe 7 at the other end.

[0030] The above is only a preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. A heat pump heating system antifreeze mechanism, comprising a functional box (1), characterized in that: An air pump (2) is installed at the top of the function box (1), and a gas cylinder (22) is installed on the left side of the inside of the function box (1). The air charging end of the air pump (2) is connected to an air charging pipe (3), and the other end of the air charging pipe (3) is communicated with the gas cylinder (22). A water outlet pipe (5) and a water inlet pipe (6) are arranged through the right side of the function box (1). An upper valve (8) is sleeved on the left end of the water outlet pipe (5), and an air blowing pipe (10) is sleeved on the left side of the upper valve (8). The air blowing pipe (10) is communicated with the gas cylinder (22). A lower valve (9) is sleeved on the left end of the water inlet pipe (6), and a drainage pipe (7) is sleeved on the left side of the lower valve (9). The other end of the drainage pipe (7) passes through the bottom of the function box (1), and an intermediate pipe (11) is communicated between the upper valve (8) and the lower valve (9).

2. The antifreeze mechanism of a heat pump heating system according to claim 1, characterized in that: A rotatable rotary valve (12) is provided inside the upper valve (8) and the lower valve (9), a driving shaft (13) is sleeved at the center of the rotary valve (12), and the other end of the driving shaft (13) penetrates into the interior of the function box (1) and is sleeved with a swing rod (19).

3. The antifreeze mechanism of a heat pump heating system according to claim 2, characterized in that: The other end of the swing rod (19) is connected to a connecting column (20), and the end of the connecting column (20) is movably connected to a movable platform (16) that can move left and right.

4. The antifreeze mechanism of a heat pump heating system according to claim 3, characterized in that: The upper and lower ends of the movable platform (16) are both provided with slide grooves (21), and the connecting column (20) is clamped in the movable platform (16) through the slide grooves (21). The left end of the movable platform (16) is provided with a permanent magnet (15).

5. The antifreeze mechanism of a heat pump heating system according to claim 4, characterized in that: An electromagnet (14) is fixedly mounted on the right side surface of the gas cylinder (22). When the electromagnet (14) is powered on, it attracts the permanent magnet (15) and moves to the left.

6. The antifreeze mechanism of a heat pump heating system according to claim 3, characterized in that: The right end of the moving platform (16) is connected to a tension spring (18), and the other end of the tension spring (18) is fixed on the function box (1).

7. The antifreeze mechanism of a heat pump heating system according to claim 1, characterized in that: Two pairs of support frames (4) are fixedly mounted on the bottom end of the functional box (1), and one pair of the support frames (4) comprises two L-shaped support legs, and positioning holes are penetrated through the L-shaped support legs.

8. The antifreeze mechanism of a heat pump heating system according to claim 5, characterized in that: When the electromagnet (14) is energized, the magnetic poles of the side opposite to the permanent magnet (15) are arranged opposite to each other.

9. The antifreeze mechanism of a heat pump heating system according to claim 6, characterized in that: Two top blocks (17) are installed on the right inner wall of the functional box (1), the other end of the tension spring (18) is located between the two top blocks (17), and the top block (17) is arranged opposite to the moving platform (16).

10. The antifreeze mechanism of a heat pump heating system according to claim 7, characterized in that: The bottom of the drainage pipe (7) is arranged higher than the bottoms of the two pairs of support frames (4).

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