Anti-freezing device of compressor

Abstract

The utility model discloses a compressor anti-freezing device which comprises a heating piece arranged on the outer surface of a compressor, a temperature sensor used for sensing the environment temperature t and an electric control system used for controlling the heating piece to start or stop heating, and a minimum temperature value T is preset for the electric control system before application. In practical application, the temperature sensor senses the environment temperature in real time and transmits the environment temperature t to the electric control system, the electric control system compares the environment temperature t with the minimum temperature value T, and when t is smaller than or equal to T, the electric control system controls the heating piece to start heating, so that the compressor oil is prevented from being thick and even frozen and solidified due to the too low temperature. According to the compressor anti-freezing device, the situation that when the temperature of the compressor is low in winter, engine oil is frozen to be thick or solidified is effectively prevented, and the problem that the compressor runs abnormally or breaks down due to the low temperature in winter is solved.

Description

Technical Field

[0001] The utility model relates to the field of compressors, in particular to an anti-freezing device for compressors. Background Art

[0002] Generally speaking, the operating environment temperature of the compressor should be between 5℃ and 40℃. Within this temperature range, the compressor can maintain normal working conditions without abnormal operation. However, the sudden drop in temperature in winter may cause short-term or long-term damage to the air compressor. For example, the compressor oil becomes thicker or even freezes due to low temperature, which will cause the oil's lubrication ability to decrease. The compressor needs more power to maintain normal operation. If similar situations continue for a long time, it may shorten the normal service life of the compressor. When the ambient temperature drops below freezing, more serious problems will occur. The oil may not be able to lubricate or seal the machine, causing the compressor to fail or stop working completely.

[0003] It can be seen that the existing technology still needs to be improved and enhanced. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a compressor anti-freezing device, aiming to solve the technical problem in the prior art that when the temperature of the compressor is low in winter, the oil in the compressor is easily frozen, resulting in abnormal operation or failure of the compressor.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A compressor antifreeze device, comprising: a heating element, an electric control system and a temperature sensor, wherein the heating element is arranged on the outer surface of the compressor, the heating element is electrically connected to the electric control system, the electric control system is used to control the heating element to start or stop heating, the temperature sensor is arranged outside the compressor and is used to sense the ambient temperature t, the temperature sensor is connected to the electric control system signal to transmit the ambient temperature t value to the electric control system; and also includes a minimum temperature value T set in the electric control system, the minimum temperature T is used to compare with the ambient temperature t, if the ambient temperature t≦T, the electric control system controls the heating element to start heating.

[0007] The compressor anti-freeze device, wherein the heating element includes a strip-shaped heating portion, both ends of the heating portion are respectively provided with connecting portions, one end of the heating portion is provided with a power lead, the heating portion is connected to each other via the two connecting portions to form a ring and surrounds the outer surface of the compressor near the storage position of the refrigeration oil, and the power lead is connected to the electronic control system.

[0008] The compressor anti-freezing device, wherein the two connecting parts are each provided with a connecting piece, one of the connecting pieces is provided with a connecting hole, and a tension spring is connected and installed in the connecting hole.

[0009] The compressor anti-freezing device, wherein the other connecting piece is provided with a hook, and the hook is connected to the tension spring to connect the two ends of the heating part.

[0010] In the compressor anti-freezing device, a power connector is provided at one end of the power lead away from the heating part, and the power connector is used to be plugged into the electric control system.

[0011] Beneficial effects:

[0012] The utility model provides a compressor anti-freezing device, including a heating element arranged on the outer surface of the compressor, a temperature sensor for sensing the ambient temperature t, and an electric control system for controlling the heating element to start or stop heating. The electric control system is preset with a minimum temperature value T before application. In actual application, the temperature sensor senses the temperature of the environment in real time, and transmits the ambient temperature t to the electric control system, which compares the ambient temperature t with the minimum temperature value T. When t≦T, the electric control system controls the heating element to start heating, thereby preventing the compressor oil from becoming viscous or even freezing and solidifying due to excessively low temperature. The compressor anti-freezing device effectively prevents the compressor from becoming viscous or solidifying due to freezing of the oil when the temperature is low in winter, thereby solving the problem of abnormal operation or failure of the compressor caused by low temperature in winter. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of the installation structure of the compressor anti-freezing device provided by the utility model;

[0014] Figure 2 A schematic diagram of the top view of the heating element provided by the utility model;

[0015] Figure 3 This is a schematic diagram of the main structure of the heating element provided by the utility model.

[0016] Reference numerals:

[0017] 1—Heating element 2—Electronic control system 3—Compressor

[0018] 11—heating part 12—connecting part 13—power lead

[0019] 14—connecting piece 15—connecting hole 16—tension spring

[0020] 17—Hook 18—Power connector. DETAILED DESCRIPTION

[0021] The utility model provides a compressor antifreeze device. In order to make the purpose, technical solution and effect of the utility model clearer and more specific, the utility model is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0022] In the description of the present utility model, it should be understood that the terms "upper", "lower", "left", "right", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present utility model. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0023] See also Figures 1 to 3As shown, the utility model provides a compressor antifreeze device, which includes: a heating element 1, an electric control system 2 and a temperature sensor (not shown in the figure), wherein the heating element 1 is arranged on the outer surface of the compressor 3, the heating element 1 is electrically connected to the electric control system 2, the electric control system 2 is used to control the heating element 1 to start or stop heating, the temperature sensor is arranged outside the compressor 3 and is used to sense the ambient temperature t, the temperature sensor is connected to the electric control system 2 signal to transmit the ambient temperature t value to the electric control system 2; and also includes a minimum temperature value T set in the electric control system 2, the minimum temperature T is used to compare with the ambient temperature t, if the ambient temperature t≦T, then the electric control system 2 controls the heating element 1 to start heating. Different engine oils have different freezing points, and the value of the minimum temperature value T can be set according to the freezing point of the engine oil used in the compressor 3, such as T=-3°C. In this embodiment, the electric control system 2 is the same as the electric control system 2 for controlling the compressor 3, preferably an STM32 single chip microcomputer; the heating element 1 preferably adopts a heating belt, and other heaters that can surround the outer side of the compressor 3 can also be adopted. The installation position of the heating element 1 should be close to the oil storage position of the compressor 3 to ensure that the heating effect of the heating element 1 is optimal. In actual application, the temperature sensor senses the temperature in the environment and transmits the ambient temperature t to the electric control system 2. The electric control system 2 makes relevant instructions to control the heating element 1 by comparing the ambient temperature t with the minimum temperature value T: if t>T, the electric control system 2 does not control the heating element 1 to start heating, or controls the started heating element 1 to stop heating; if t≦T, the electric control system 2 controls the heating element 1 to start heating.

[0024] Preferably, since the electronic control system 2 also controls the compressor 3, when the compressor 3 stops running for more than 3 hours and the ambient temperature t≦T, but the compressor 3 needs to be started, the electronic control system 2 first controls the heating element 1 to start heating, and after the heating element 1 is heated for a certain period of time, the electronic control system 2 controls the compressor 3 to start running, thereby ensuring the lubrication ability and sealing effect of the engine oil, and ensuring that the compressor 3 can operate normally.

[0025] See also Figures 2 to 3As shown, the heating element 1 includes a strip-shaped heating portion 11, and a connecting portion 12 is provided at both ends of the heating portion 11. A power lead 13 is provided at one end of the heating portion 11. The heating portion 11 is connected to each other via two connecting portions 12 to form a ring and surround the outer surface of the compressor 3 near the storage position of the refrigeration oil, and the power lead 13 is connected to the electric control system 2. The length of the heating portion 11 can be designed and customized according to the outer diameter of the compressor 3, and the heating portion 11 is flexible and can be bent and curled. During installation, the heating portion 11 is bent and surrounded on the outside of the compressor 3, and the two connecting portions 12 are connected to fix the heating portion 11 on the outer side of the compressor 3, and then the power lead 13 is connected to the electric control system 2.

[0026] See also Figures 2 to 3 As shown, the two connecting parts 12 are both provided with connecting pieces 14, one of the connecting pieces 14 is provided with a connecting hole 15, and the connecting hole 15 is connected and installed with a tension spring 16. The other connecting piece 14 is provided with a hook 17, and the hook 17 is connected to the tension spring 16 to connect the two ends of the heating part 11. The two connecting pieces 14 can be connected to the connecting part 12 by screws or riveting processes, and the free end of the tension spring 16 is provided with a ring, and the hook 17 connects the two connecting parts 12 by hooking the ring. Due to the elastic characteristics of the tension spring 16, the heating element 1 can be fixed at a designated position on the outer side of the compressor 3 without falling, ensuring that the heating element 1 can be effectively heated.

[0027] See also Figure 2 and Figure 3 As shown, the end of the power lead 13 away from the heating part 11 is provided with a power connector 18, and the power connector 18 is used to be plugged into the electric control system 2. The shape and model of the power connector 18 must match the wiring terminal of the electric control system 2, and the electric control system 2 controls the heating element 1 to start or stop heating by controlling the power on and off of the power connector 18.

[0028] Furthermore, the compressor anti-freezing device further comprises the following operating steps:

[0029] S01. The temperature sensor senses the ambient temperature t and transmits the value of the ambient temperature t to the electronic control system 2. The temperature sensor can be set to work continuously throughout the year or only in winter. The manufacturer can set it according to the actual use environment of the sales area and choose the most suitable, energy-saving and environmentally friendly mode.

[0030] S02, the electronic control system 2 compares the ambient temperature t with the preset minimum temperature value T; after the comparison processing, the electronic control system 2 will issue corresponding instructions to control the start and stop of the heating element 1 according to the comparison result, and can even control the heating time of the heating element 1.

[0031] S03. If t>T, the electronic control system 2 does not control the heating element 1 to start heating, or controls the started heating element 1 to stop heating; if t≦T, the electronic control system 2 controls the heating element 1 to start heating to prevent the engine oil from freezing, becoming sticky or solidifying.

[0032] In this embodiment, steps S01 to S03 are performed repeatedly to ensure that the compressor 3 can operate normally throughout the winter and protect the compressor 3 from damage.

[0033] In summary, the utility model discloses a compressor anti-freezing device, including a heating element 1 arranged on the outer surface of a compressor 3, a temperature sensor for sensing the ambient temperature t, and an electric control system 2 for controlling the heating element 1 to start or stop heating. The electric control system 2 is preset with a minimum temperature value T before application. In actual application, the temperature sensor senses the temperature of the environment in real time, and transmits the ambient temperature t to the electric control system 2, which compares the ambient temperature t with the minimum temperature value T. When t≦T, the electric control system 2 controls the heating element 1 to start heating, thereby preventing the oil in the compressor 3 from becoming viscous or even freezing and solidifying due to too low a temperature. The compressor anti-freezing device effectively prevents the compressor 3 from becoming viscous or solidifying due to freezing of the oil when the temperature is low in winter, thereby solving the problem of abnormal operation or failure of the compressor 3 caused by low temperatures in winter.

[0034] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and utility model concept of the utility model, and all these changes or substitutions should fall within the protection scope of the claims attached to the utility model.

Claims

1. A compressor anti-freezing device, characterized in that: include: A heating element (1), an electric control system (2) and a temperature sensor, wherein the heating element (1) is arranged on the outer surface of a compressor (3), the heating element (1) is electrically connected to the electric control system (2), the electric control system (2) is used to control the heating element (1) to start or stop heating, the temperature sensor is arranged outside the compressor (3) and is used to sense an ambient temperature t, the temperature sensor is connected to the electric control system (2) by signal so as to transmit the value of the ambient temperature t to the electric control system (2); and further comprises a minimum temperature value T arranged in the electric control system (2), the minimum temperature value T being used to compare with the ambient temperature t, and if the ambient temperature t≦T, the electric control system (2) controls the heating element (1) to start heating.

2. The compressor antifreeze device according to claim 1, characterized in that: The heating element (1) comprises a strip-shaped heating portion (11), the two ends of the heating portion (11) are respectively provided with connecting portions (12), one end of the heating portion (11) is provided with a power lead (13), the heating portion (11) is connected to each other via the two connecting portions (12) to form a ring shape and surround the outer surface of the compressor (3) near the storage position of the refrigeration oil, and the power lead (13) is connected to the electric control system (2).

3. The compressor anti-freezing device according to claim 2, characterized in that: The two connecting parts (12) are each provided with a connecting piece (14), one connecting piece (14) is provided with a connecting hole (15), and a tension spring (16) is connected and installed in the connecting hole (15).

4. The compressor antifreeze device according to claim 3, characterized in that: The other connecting piece (14) is provided with a hook (17), and the hook (17) is connected to the tension spring (16) so as to connect the two ends of the heating part (11).

5. The compressor anti-freezing device according to claim 2, characterized in that: A power connector (18) is provided at one end of the power lead (13) away from the heating portion (11), and the power connector (18) is used to be plugged into the electric control system (2).

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