Anti-freezing mechanism of heat pump heating system

Abstract

The application discloses a kind of freeze-proof mechanism of heat pump heating system, including function box, the top end of the function box is equipped with air pump, the inside left side of the function box is equipped with gas cylinder, the air charging end of the air pump is connected with air pipe, the left side of lower valve is equipped with drain pipe, another end of its drain pipe is penetrated to the lower of function box, the upper valve and lower valve are communicated with intermediate pipe.The application is matched by electromagnet and tension spring structure, when sudden power failure occurs, moving platform moves right under the action of tension spring and finally drives rotary valve to rotate, upper valve opens air blowing pipe and blocks intermediate pipe at this time, its lower valve opens drain pipe and blocks intermediate pipe, so compressed air in gas cylinder can be quickly blown out, to blow and discharge the water in circulating pipeline, so as to avoid the case that water is stored in heat pump heating system and causes freeze cracking under low temperature, avoid economic loss and operation safety accident hidden danger.

Description

Technical Field

[0001] This invention relates to the field of heat pump heating technology, and in particular to an antifreeze mechanism for a heat pump heating system. Background Technology

[0002] To reduce fossil fuel consumption and carbon emissions, heat pump heating systems (coal-to-electricity conversion) are being vigorously promoted in northern China for winter heating. Heat pump heating systems are clean, energy-efficient, and low-carbon, making them the best heating solution in northern China under current technological conditions. However, both heat pump and electric heating systems have a drawback: their anti-freezing measures rely on electricity. If the unit loses power and the user cannot drain the circulating water in time, there is a risk of freezing and cracking, leading to economic losses and operational safety accidents. Summary of the Invention

[0003] The purpose of this invention is to solve the above-mentioned technical problems by proposing an antifreeze mechanism for a heat pump heating system.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An antifreeze mechanism for a heat pump heating system includes a functional box. An air pump is installed at the top of the functional box, and a gas cylinder is installed on the left side inside the functional box. An air pump is connected to an air pump with an air pump pipe at the air pump's air pump end, and the other end of the air pump pipe is connected to the gas cylinder. A water outlet pipe and a water inlet pipe are installed through the right side of the functional box. An upper valve is fitted on the left end of the water outlet pipe, and an air blowing pipe is fitted on the left side of the upper valve. The air blowing pipe is connected to the gas cylinder. A lower valve is fitted on the left end of the water inlet pipe, and a drain pipe is fitted on the left side of the lower valve. The other end of the drain pipe pipe extends to the bottom of the functional box. An intermediate pipe connects the upper valve and the lower valve.

[0006] Preferably, both the upper and lower valves are equipped with rotatable rotary valves, and a drive shaft is sleeved at the center of the rotary valve. The other end of the drive shaft passes through the interior of the functional box and is sleeved with a swing rod.

[0007] Preferably, the other end of each swing rod is connected to a connecting column, and the end of the connecting column is movably connected to a movable platform that can move left and right.

[0008] Preferably, the moving platform has sliding grooves at both the top and bottom, and the connecting column is engaged with the moving platform through the sliding grooves. A permanent magnet is installed at the left end of the moving platform.

[0009] Preferably, an electromagnet is fixedly installed on the right side surface of the gas cylinder, and the electromagnet attracts a permanent magnet and moves to the left after the power is turned on.

[0010] Preferably, a tension spring is connected to the right end of the mobile platform, and the other end of the tension spring is connected to a fixed part of the functional box.

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

[0012] Preferably, the electromagnet has its magnetic poles opposite to those of the permanent magnet when energized.

[0013] Preferably, two top blocks are installed on the inner right side of the functional box, and the other end of the tension spring is located between the two top blocks, with the top blocks being positioned opposite to the moving platform.

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

[0015] The beneficial effects of this invention are as follows:

[0016] This invention utilizes the combination of electromagnets and tension springs. In the event of a sudden power outage, the moving platform moves to the right under the action of the tension spring, ultimately driving the rotary valve to rotate. At this time, the upper valve opens the air blowing pipe and blocks the middle pipe, while the lower valve opens the drain pipe and blocks the middle pipe. In this way, the compressed air in the gas cylinder can be quickly blown out, thereby blowing and discharging the stagnant water in the circulation pipe. This prevents water from remaining in the heat pump heating system and causing it to freeze and crack at low temperatures, thus avoiding economic losses and potential safety hazards. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the antifreeze mechanism of a heat pump heating system proposed in this invention;

[0018] Figure 2 This is a schematic diagram of the internal structure of an antifreeze mechanism for a heat pump heating system proposed in this invention;

[0019] Figure 3 This is a schematic diagram of the upper and lower valves in the antifreeze mechanism of a heat pump heating system proposed in this invention;

[0020] Figure 4 This is a cross-sectional view of an antifreeze mechanism for a heat pump heating system proposed in this invention.

[0021] In the diagram: 1 Functional box, 2 Air pump, 3 Air inlet 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 Intermediate 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 Slide groove, 22 Gas cylinder. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0023] Reference Figures 1-4 A heat pump heating system antifreeze mechanism includes a functional box 1. Two pairs of support frames 4 are fixedly installed at the bottom of the functional box 1. Each 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 on the top of the functional box 1. A gas cylinder 22 is installed on the left side inside the functional box 1. When the pressure in the gas cylinder 22 is insufficient, the air pump 2 will automatically inflate the gas cylinder 22 after the power is turned on. The inflation end of the air pump 2 is connected to an inflation pipe 3, and the other end of the inflation pipe 3 is connected to the gas cylinder 22. A water outlet pipe 5 and a water inlet pipe 6 are installed through the right side of the functional box 1. An upper valve 8 is fitted on the left end of the water outlet pipe 5, and a lower valve 9 is fitted on the left end of the water inlet pipe 6.

[0025] The upper valve 8 and the lower valve 9 are further explained as follows: Both the upper valve 8 and the lower valve 9 are equipped with a rotatable rotary valve 12. A drive shaft 13 is sleeved in the center of the rotary valve 12. The other end of the drive shaft 13 passes through the interior of the functional box 1 and is sleeved with a swing rod 19. The swing rod 19 and the rotary valve 12 are coaxially connected, that is, the rotary valve 12 and the swing rod 19 have the same rotation angle.

[0026] The other end of each swing rod 19 is connected to a connecting column 20. The end of the connecting column 20 is movably connected to a movable platform 16 that can move left and right. Both the upper and lower ends of the movable platform 16 are provided with sliding grooves 21. The connecting column 20 is engaged in the movable platform 16 through the sliding grooves 21. A permanent magnet 15 is installed on the left end of the movable platform 16. An electromagnet 14 is fixedly installed 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 it to the left. To further explain the attraction of the permanent magnet 15: when the electromagnet 14 is powered on, the magnetic poles on the side opposite to the permanent magnet 15 are set opposite. After the permanent magnet 15 is magnetized, it can pull the movable platform 16 to the left.

[0027] Two top blocks 17 are installed on the inner right side of the functional 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 moving platform 16. When the moving platform 16 moves to the right, the top blocks 17 can abut against the right surface of the moving platform 16, and the tension spring 18 can be stored between the two top blocks 17.

[0028] An air blowing pipe 10 is fitted on the left side of the upper valve 8, and the air blowing pipe 10 is connected to the gas cylinder 22. A drain pipe 7 is fitted on the left side of the lower valve 9. The bottom of the drain pipe 7 is set higher than the bottom of the two pairs of support frames 4, which is conducive to discharge. The other end of the drain pipe 7 extends to the bottom of the functional box 1. An intermediate pipe 11 connects the upper valve 8 and the lower valve 9.

[0029] The working principle of this invention is as follows: When the functional box 1 is in the power-on state (e.g., Figure 4 As shown), at this time, hot water in the heat pump pipe flows in from the inlet pipe 6 (as shown). Figure 3 As shown), after being blocked by two rotary valves 12, the water eventually flows out from the outlet pipe 5. When the power is off, the electromagnet 14 can no longer maintain the attraction 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 movement of the moving platform 16 to the right will drive the swing rod 19 to deflect. In this way, the rotary valve 12 in the upper valve 8 rotates counterclockwise and blocks the middle pipe 11, opening the blowing pipe 10. The rotary valve 12 in the lower valve 9 will also block the middle 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 pipe, and the water in the circulation pipe will be discharged from the drain pipe 7 at the other end.

[0030] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A frost protection mechanism for a heat pump heating system, comprising a functional box (1), characterized in that: An air pump (2) is installed at the top of the functional box (1). A gas cylinder (22) is installed on the left side inside the functional box (1). An air pump (2) is connected to an air pump pipe (3) at the air pump (2). The other end of the air pump pipe (3) is connected to the gas cylinder (22). A water outlet pipe (5) and a water inlet pipe (6) are installed through the right side of the functional box (1). An upper valve (8) is fitted on the left end of the water outlet pipe (5). An air blowing pipe (10) is fitted on the left side of the upper valve (8). The air blowing pipe (10) is connected to the gas cylinder (22). A lower valve (9) is fitted on the left end of the water inlet pipe (6). A drain pipe (7) is fitted on the left side of the lower valve (9). The other end of the drain pipe (7) extends through to the bottom of the functional box (1). An intermediate pipe (11) connects the upper valve (8) and the lower valve (9). The upper valve (8) and the lower valve (9) are both equipped with a rotatable rotary valve (12). A drive shaft (13) is sleeved in the center of the rotary valve (12). The other end of the drive shaft (13) passes through the interior of the functional box (1) and is sleeved with a swing rod (19). The other end of each 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. The upper and lower ends of the mobile platform (16) are provided with sliding grooves (21), and the connecting column (20) is engaged in the mobile platform (16) through the sliding grooves (21). A permanent magnet (15) is installed on the left end of the mobile platform (16). An electromagnet (14) is fixedly installed 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. When the electromagnet (14) is energized, the magnetic poles on the side opposite to those on the permanent magnet (15) are set in opposite directions; The right end of the mobile platform (16) is connected to a tension spring (18), and the other end of the tension spring (18) is connected to a fixed part of the functional box (1). When the function box (1) is powered on, hot water in the heat pump pipe flows in from the inlet pipe (6), and after being blocked by two rotary valves (12), it finally flows out from the outlet pipe (5). When the function box (1) is powered off, the electromagnet (14) cannot maintain the attraction 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 moving platform (16) will move to the right and drive the swing rod (19) to deflect. In this way, the rotary valve (12) in the upper valve (8) rotates counterclockwise and blocks the middle pipe (11), opening the blowing pipe (10). The rotary valve (12) in the lower valve (9) will also block the middle 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 pipe, and the water in the circulation pipe will be discharged from the drain pipe (7) at the other end.

2. The antifreeze mechanism for a heat pump heating system according to claim 1, characterized in that, Two pairs of support frames (4) are fixedly installed at the bottom of the functional box (1). Each pair of support frames (4) includes two L-shaped support legs, and positioning holes are provided through the L-shaped support legs.

3. The antifreeze mechanism for a heat pump heating system according to claim 1, characterized in that, Two top blocks (17) are installed on the inner right side of the functional box (1), and 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 moving platform (16).

4. The antifreeze mechanism for a heat pump heating system according to claim 2, characterized in that, The bottom of the drain pipe (7) is set higher than the bottom of the two pairs of support frames (4).

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