Anti-freezing device for condenser

Abstract

An anti-freezing device for a condenser comprises the condenser, the periphery of the condenser is sleeved with a first round pipe, the periphery of the first round pipe is sleeved with a second round pipe, the first round pipe and the second round pipe are installed on the condenser in a sealed mode, a heating assembly is arranged on the first round pipe, a temperature sensor is fixedly installed on the condenser, and the second round pipe is installed on a base. A vacuum pump is fixedly installed on the base and communicates with the second round pipe through a one-way valve. The condenser is simple in structure and ingenious in conception, a vacuum environment is arranged in a sleeving mode while the periphery of the condenser is heated, in the vacuum environment, heat transfer of a heated object is mainly conducted through radiation, the convective heat transfer and heat conduction effects of gas are greatly weakened, vacuumizing has the effects of heat preservation, heat insulation and the like, and the service life of the condenser is prolonged. And meanwhile, continuous heating is not needed, the energy consumption is reduced, the cost is reduced, the market requirement can be met, and the device is suitable for popularization.

Description

Technical Field

[0001] This utility model belongs to the field of antifreeze equipment, specifically an antifreeze device for condensers. Background Technology

[0002] As is well known, winters in northern my country are extremely cold with very low temperatures. Therefore, after the refrigeration unit stops working, the water in the condenser must be drained; otherwise, the copper tubes of the condenser may freeze and crack. However, in reality, it is difficult to completely drain the water manually, and it is also common to forget to drain the water due to oversight. This is where antifreeze devices come in. Patent CN218065435U, entitled "An Antifreeze Device for Condensers," discloses a device that can prevent condensers from freezing. However, when using this device, the outer wall temperature is high, which can easily cause burns. At the same time, heat loss is rapid, requiring frequent heating to prevent freezing, resulting in high energy costs. Therefore, we have designed an antifreeze device for condensers that is heat-insulating and has slower heat loss. Utility Model Content

[0003] This invention provides an antifreeze device for condensers to address the deficiencies in the prior art.

[0004] This utility model is achieved through the following technical solution:

[0005] An antifreeze device for a condenser includes a condenser, a first circular tube fitted around the outer periphery of the condenser, and a second circular tube fitted around the outer periphery of the first circular tube. The first and second circular tubes are respectively sealed to the condenser. A heating element is provided on the first circular tube, and a temperature sensor is fixedly installed on the condenser. The second circular tube is mounted on a base, and a vacuum pump is fixedly installed on the base. The vacuum pump is connected to the second circular tube through a one-way valve. A vacuum pressure relief valve is fixedly provided on the second circular tube. A controller is fixedly installed on the base, and the controller is electrically connected to the heating element, the vacuum pump, the vacuum pressure relief valve, and the temperature sensor.

[0006] As described above, in a condenser antifreeze device, the first round tube and the second round tube are two semicircular tubes, which are fixedly connected by several connecting rods. The outer periphery of one side of the second round tube is fixedly mounted on the base by a bracket, and the outer periphery of the other side of the second round tube is movably mounted on the base. The base is provided with a drive mechanism for driving the other side of the second round tube to move back and forth.

[0007] As described above, the antifreeze device for a condenser includes a drive mechanism comprising screws. Two screws are rotatably mounted on a base, and nuts are threaded onto the screws. The nuts are fixedly mounted on the outer periphery of the semi-circular tube on the other side of the second circular tube via support rods. One end of each screw is fixedly connected to the rotating shaft of a motor and is coaxially arranged. The motor is fixedly mounted on the base.

[0008] As described above, in a condenser antifreeze device, the heating component includes an electric heating wire. The inner circumference of the two semicircular tubes of the first circular tube is respectively provided with an electric heating wire, which passes through the sealing holes provided on the first and second circular tubes and is electrically connected to the controller.

[0009] As described above, in a condenser antifreeze device, a pressure gauge is provided on one side of the semicircular tube of the second circular tube, and the bottom end of the pressure gauge is installed in a threaded hole opened on the second circular tube by means of a threaded winding.

[0010] As described above, in a condenser antifreeze device, sealing gaskets are provided at the corresponding joints of the two semicircular sections of the first and second round tubes, and sealing gaskets are also provided at the joints of the first and second round tubes with the two ends of the condenser.

[0011] The advantages of this utility model are: the utility model has a simple structure and ingenious design. By heating the outer periphery of the condenser while simultaneously setting up a vacuum environment, the heat transfer of a heated object in the vacuum environment is mainly through radiation, while the convective heat transfer and conduction of the gas are greatly reduced. The vacuuming has the effects of heat preservation and insulation, preventing the outer wall of the second circular tube from overheating and burning workers. At the same time, it does not require continuous heating, which reduces energy consumption and costs, meets market demand, and is suitable for promotion. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 A-direction view.

[0014] Reference numerals: 1. Condenser, 2. First round tube, 3. Second round tube, 4. Temperature sensor, 5. Base, 6. Vacuum pump, 7. One-way valve, 8. Vacuum relief valve, 9. Controller, 20. Bracket, 30. Screw, 31. Nut, 32. Support rod, 33. Motor, 51. Pressure gauge, 60. Sealing gasket. Detailed Implementation

[0015] 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 scope of protection of this utility model.

[0016] An antifreeze device for a condenser, such as Figure 1 , 2As shown, the device includes a condenser 1, with a first circular tube 2 fitted around its outer periphery and a second circular tube 3 fitted around its outer periphery. The first and second circular tubes 2 and 3 are respectively sealed to the condenser 1. A heating element is provided on the first circular tube 2. A temperature sensor 4 is fixedly installed on the condenser 1. The second circular tube 3 is mounted on a base 5. A vacuum pump 6 is fixedly installed on the base 5. The vacuum pump 6 is connected to the second circular tube 3 through a one-way valve 7. One end of the one-way valve 7 is connected to the suction pipe of the vacuum pump 6, and the other end of the one-way valve 7 is connected to the outlet on the second circular tube 3. A vacuum relief valve 8 is fixedly provided on the second circular tube 3. A controller 9 is fixedly provided on the base 5. The controller 9 is electrically connected to the heating element, the vacuum pump 6, the vacuum relief valve 8, and the temperature sensor 4. This utility model has a simple structure and ingenious design. By heating the outer periphery of the condenser 1 while simultaneously setting up a vacuum environment, the heat transfer of a heated object in the vacuum environment is mainly through radiation, while the convective heat transfer and conduction effects of the gas are greatly reduced. The vacuuming has the effects of heat preservation and insulation, preventing the outer wall of the second circular tube 3 from overheating and burning workers. At the same time, it eliminates the need for continuous heating, reducing energy consumption and costs, meeting market demands, and is suitable for widespread application. When using this invention, the cavity between the first circular tube 2 and the second circular tube 3 is first evacuated to a negative pressure using a vacuum pump 6. A one-way valve 7 prevents gas backflow, and a vacuum relief valve 50 can release internal pressure when the negative pressure is too high. A temperature sensor 4 can detect the temperature of the cavity inside the first circular tube 2. When the temperature inside the first circular tube 2 is below zero, the temperature sensor 4 can transmit a signal to the controller 51. The controller 51 can control the heating component to heat the inside of the first circular tube 2 to prevent ice from forming inside the condenser 1. Heating will stop when the temperature sensor 4 sets a certain temperature, reducing the energy consumption caused by continuous heating. At this time, the vacuum environment between the first circular tube 2 and the second circular tube 3 plays a role in heat preservation and insulation, reducing heat loss and preventing the outer wall of the second circular tube 3 from overheating and burning workers.

[0017] Specifically, as shown in the figure, in this embodiment, the first circular tube 2 and the second circular tube 3 are two semicircular tubes, symmetrically distributed front and back. The semicircular tubes on the same side are fixedly connected by several connecting rods. The outer circumference of the first circular tube 2 is fixedly installed on the inner circumference of the second circular tube 3 by connecting rods. The outer circumference of one side of the second circular tube 3 is fixedly installed on the base 5 by a bracket 20, and the outer circumference of the other side of the second circular tube 3 is movably installed on the base 5. The base 5 is provided with a drive mechanism to drive the other side of the second circular tube 3 to move back and forth. The drive mechanism can drive the second circular tube 3 on the front side to move the first circular tube 2 to the front side, so that the two semicircular tubes are separated. When the condenser 1 malfunctions and needs to be repaired or replaced, it is convenient to remove the internal condenser 1 without replacing the external antifreeze device together. Before removing the condenser 1, the pressure can be released through the vacuum relief valve 8 to balance the internal and external pressures.

[0018] Specifically, as shown in the figure, the driving mechanism in this embodiment includes screws 30. Two screws 30 are rotatably mounted on the base 5, arranged symmetrically on the left and right sides. The screws 30 are rotatably mounted on the base 5 via bearing seats. The outer circumference of the screws 30 is fixedly connected to the inner circumference of the bearing seats, and the outer circumference of the bearing seats is fixedly mounted on the base 5. Nuts 31 are threadedly installed on the screws 30. The nuts 31 are fixedly mounted on the outer circumference of the semi-circular tube on the other side of the second circular tube 3 via support rods 32. One end of each screw 30 is fixedly connected to the rotating shaft of a motor 33 and is coaxially arranged. The motor 33 is fixedly mounted on the base 5. The rotating shaft of the motor 33 simultaneously drives the screws 30 to rotate. The screws 30 can drive the nuts 31 and support rods 32 to move back and forth. The support rods 32 can drive the semi-circular tube on the front side of the second circular tube 3 to move back and forth.

[0019] Furthermore, as shown in the figure, the heating assembly in this embodiment includes electric heating wires (not shown in the figure). Electric heating wires are respectively provided on the inner circumference of the two semicircular tubes of the first circular tube 2. The heating wires of the two semicircular tubes are independently configured so that they do not interfere with each other during movement. The electric heating wires pass through sealing holes provided on the first circular tube 2 and the second circular tube 3, respectively, and are electrically connected to the controller 9. The controller 9 energizes the two sets of electric heating wires by controlling an external power source. The electric heating wires can heat the inner circumference and internal cavity of the first circular tube 2, thereby heating the condenser 1 and preventing internal freezing.

[0020] Furthermore, as shown in the figure, in this embodiment, a pressure gauge 51 is provided on one side of the semicircular tube of the second circular tube 3. The bottom end of the pressure gauge 51 is installed in a threaded hole on the second circular tube 3 through a spiral wound tape. The pressure gauge 51 can detect the negative pressure value of the cavity between the first circular tube 2 and the second circular tube 3 in real time. Several turns of spiral wound tape are first wrapped around the bottom end of the pressure gauge 51, and then the pressure gauge 51 is rotated and installed in the threaded hole on the second circular tube 3. The spiral wound tape can increase the sealing performance, and the threaded connection facilitates quick replacement when the pressure gauge 51 is damaged.

[0021] Furthermore, as shown in the figure, in this embodiment, sealing gaskets 60 are respectively provided at the connection points of the two semicircular tubes of the first circular tube 2 and the second circular tube 3, and sealing gaskets 60 are also respectively provided at the connection points of the first circular tube 2 and the second circular tube 3 with both ends of the condenser 1. The sealing gaskets 60 can increase the sealing performance between the first circular tube 2 and the condenser 1, and between the second circular tube 3 and the first circular tube 2.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A condenser antifreeze device, comprising a condenser (1), characterized in that: The condenser (1) is fitted with a first circular tube (2) on its outer periphery, and a second circular tube (3) is fitted with the outer periphery of the first circular tube (2). The first circular tube (2) and the second circular tube (3) are respectively sealed and installed with the condenser (1). The first circular tube (2) is provided with a heating component. The condenser (1) is fixedly installed with a temperature sensor (4). The second circular tube (3) is installed on a base (5). The base (5) is fixedly installed with a vacuum pump (6). The vacuum pump (6) is connected to the second circular tube (3) through a one-way valve (7). The second circular tube (3) is fixedly provided with a vacuum pressure relief valve (8). The base (5) is fixedly provided with a controller (9). The controller (9) is electrically connected to the heating component, the vacuum pump (6), the vacuum pressure relief valve (8), and the temperature sensor (4).

2. The antifreeze device for a condenser according to claim 1, characterized in that: The first round tube (2) and the second round tube (3) are two semicircular tubes respectively. The semicircular tubes on the same side are fixedly connected by several connecting rods. The outer periphery of one side of the second round tube (3) is fixedly installed on the base (5) by the bracket (20). The outer periphery of the other side of the second round tube (3) is movably installed on the base (5). The base (5) is provided with a driving mechanism to drive the other side of the second round tube (3) to move back and forth.

3. The antifreeze device for a condenser according to claim 2, characterized in that: The drive mechanism includes a screw (30), two screws (30) are rotatably mounted on the base (5), and nuts (31) are threadedly mounted on the screws (30). The nuts (31) are fixedly mounted on the outer periphery of the semi-circular tube on the other side of the second circular tube (3) by the support rod (32). One end of the screw (30) is fixedly connected to the rotating shaft of the motor (33) and is coaxially arranged. The motor (33) is fixedly mounted on the base (5).

4. The antifreeze device for a condenser according to claim 2, characterized in that: The heating assembly includes electric heating wires. The inner circumference of the two semicircular tubes of the first round tube (2) is provided with electric heating wires, which pass through the sealing holes provided on the first round tube (2) and the second round tube (3) and are electrically connected to the controller (9).

5. The antifreeze device for a condenser according to claim 4, characterized in that: A pressure gauge (51) is provided on one side of the semicircular tube of the second round tube (3). The bottom end of the pressure gauge (51) is installed in the threaded hole opened on the second round tube (3) by means of a spiral thread.

6. A condenser antifreeze device according to claim 2, characterized in that: Sealing gaskets (60) are provided at the connection points of the two semicircular tubes of the first circular tube (2) and the second circular tube (3), and sealing gaskets (60) are also provided at the connection points of the first circular tube (2) and the second circular tube (3) with the two ends of the condenser (1).

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