Heating protection device for detecting refrigerant leakage

Abstract

The utility model provides a heating protection device for detecting refrigerant leakage, which belongs to the technical field of heating equipment and comprises a casing, an electric control component, a refrigerant leakage sensor, a fan and a heat pump component, the output end of the fan is opposite to the heat pump component, and an air outlet corresponding to the fan is arranged on the casing. The refrigerant leakage sensor is fixedly installed at the bottom of the interior of the machine shell, a probe capable of flexibly responding is hinged to the refrigerant leakage sensor, the refrigerant leakage sensor arranged at the bottom of the device is in linkage with the draught fan, information can be rapidly sensed and fed back to the electric control assembly, the draught fan is triggered to be started, and a heat pump is triggered to stop running; and it is ensured that refrigerant leakage does not continue to diffuse, and safety accidents such as fire disasters, explosions or poisonous gas leakage caused by too high refrigerant concentration are effectively prevented.

Description

Technical Field

[0001] This utility model belongs to the field of heating equipment technology, specifically relating to a heating protection device for detecting refrigerant leakage. Background Technology

[0002] With increasing global concern about climate change, many countries and regions are promoting the reduction of fossil fuel use, especially electric heating systems that combine with renewable energy sources (such as wind and solar power), which can significantly reduce carbon emissions. R290 refrigerant, as a natural and environmentally friendly refrigerant, performs excellently in terms of efficiency and environmental protection, meeting the needs of modern energy conservation and emission reduction, and providing users with efficient and safe heating solutions. However, existing products using R290 refrigerant typically have an indoor refrigerant charge of no more than 150g, which is far from meeting the heating requirements of indoor heating units. According to the European IEC 60335 regulation, although the limit for R290 refrigerant usage has been increased from 150g to 500g to ensure heating needs are met, this increase also brings significant safety risks because R290 refrigerant is classified as A3 (flammable and explosive). Conventional products cannot avoid these potential fire or explosion hazards.

[0003] Currently, most existing products lack dedicated safety detection devices for R290 refrigerant leaks and effective emergency response mechanisms, making it impossible to take timely safety measures in the event of a leak, potentially leading to safety hazards. How to effectively prevent the accumulation of leaked refrigerant and quickly discharge it remains a problem that current technologies have not fully solved.

[0004] Therefore, there is an urgent need to design a heating protection device that can detect refrigerant leaks in a timely manner and ensure a high level of safety. Utility Model Content

[0005] The purpose of this invention is to provide a heating protection device for detecting refrigerant leakage, aiming to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A heating protection device for detecting refrigerant leakage includes a housing, an electrical control assembly, a refrigerant leakage sensor, and a fan and a heat pump assembly fixedly installed inside the housing. The output end of the fan faces the heat pump assembly and is used to dissipate the leaked refrigerant from the heat pump assembly. An air outlet is provided on the housing corresponding to the position of the fan's output end. The refrigerant leakage sensor is fixedly installed at the bottom inside the housing. The refrigerant leakage sensor, the fan, and the heat pump assembly are all electrically connected to the electrical control assembly.

[0008] Furthermore, several refrigerant leakage sensors are evenly distributed around the bottom perimeter of the housing.

[0009] Furthermore, several refrigerant leakage sensors are provided in the middle and top of the housing, with the refrigerant sensors at the bottom and top being coaxially aligned, and the refrigerant sensors in the middle and bottom being spaced apart.

[0010] Furthermore, the refrigerant leakage sensor includes an infrared light source assembly, a gas chamber, a filter, an infrared detector, and a probe. The output end of the infrared light source assembly is aligned with the interior of the gas chamber. The output end of the gas chamber is provided with the filter. The output end of the filter is matched with the input end of the infrared detector. The infrared detector is electrically connected to the electronic control assembly. The probe is hinged to the gas chamber and communicates with the gas chamber, used to guide the leaked refrigerant in the device into the gas chamber for detection.

[0011] Furthermore, the probe is tilted downwards at 15° relative to the refrigerant leak sensor.

[0012] Furthermore, the air outlet is provided with a guide plate, which is inclined downward at 30° relative to the air outlet.

[0013] Furthermore, the electronic control components are fixedly installed inside the housing.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention links a refrigerant leak sensor with a fan. The refrigerant sensor is located at the bottom of the device and can quickly detect and feed the information back to the electronic control components, triggering the fan to start and the heat pump to stop operating. This ensures that the refrigerant leak does not continue to spread. The fan discharges the leaked refrigerant to the outside through the air outlet until the refrigerant concentration in the device is within the set safe range. This effectively prevents safety accidents such as fires, explosions, or toxic gas leaks caused by excessive refrigerant concentration. It can restore the device to a safe state in a short time, reducing equipment downtime and ensuring the rapid restoration of heating or cooling functions. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of a heating protection device for detecting refrigerant leakage according to the present invention;

[0018] Figure 2 for Figure 1 A magnified view of a portion of the image;

[0019] Figure 3 This is a schematic diagram of the refrigerant leakage sensor of this utility model;

[0020] In the diagram: 1-Casing, 2-Electrical control components, 3-Refrigerant leak sensor, 31-Probe, 4-Fan, 5-Air outlet. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] A heating protection device for detecting refrigerant leakage includes a housing 1, an electrical control component 2, a refrigerant leakage sensor 3, and a fan 4 and a heat pump component fixedly installed inside the housing 1. The output end of the fan 4 faces the heat pump component and is used to drive away the refrigerant leaking from the heat pump component. An air outlet 5 is provided on the housing 1 corresponding to the position of the output end of the fan 4. The refrigerant leakage sensor 3 is fixedly installed at the bottom inside the housing 1. The refrigerant leakage sensor 3, the fan 4, and the heat pump component are all electrically connected to the electrical control component 2.

[0023] The output end of the fan 4 in this invention is directly facing the heat pump assembly. When refrigerant leakage occurs in the heat pump assembly, the fan 4 can quickly disperse the leaked refrigerant, reducing the concentration of refrigerant inside the device and in the surrounding environment, thereby reducing the risk of refrigerant hazards to personnel and equipment, and effectively ensuring the personal safety of users and the safe operation of equipment. By setting the air outlet 5 and corresponding to the output end of the fan 4, a clear channel for refrigerant discharge is provided, preventing refrigerant accumulation inside the device and reducing the possibility of safety accidents such as combustion, explosion, or poisoning caused by excessive refrigerant concentration; the refrigerant leak sensor 3 is fixed. Installed at the bottom inside the casing 1, it facilitates timely detection of refrigerant leaks from components such as the heat pump assembly. Since R290 refrigerant (C3H8) has a molecular weight of 44.1, which is larger than air, it will settle downwards or accumulate in the bottom area after leakage. Placing the sensor at the bottom allows for more accurate monitoring of refrigerant leaks, improving detection sensitivity and reliability, and ensuring timely detection of refrigerant leaks. The electronic control component 2 can take corresponding measures in a timely manner based on the sensor signal, such as starting the fan 4 to disperse the refrigerant and issuing an alarm, effectively improving the device's response speed and handling efficiency for refrigerant leaks.

[0024] Furthermore, several refrigerant leakage sensors 3 are evenly distributed around the bottom perimeter of the casing 1.

[0025] Furthermore, several refrigerant leakage sensors 3 are provided in the middle and top of the housing 1, with the refrigerant sensors at the bottom and top being coaxially aligned, and the refrigerant sensors in the middle and bottom being spaced apart.

[0026] Refrigerant leak sensors 3 are installed at the bottom, middle, and top of the casing 1, forming a vertical detection array. The bottom refrigerant leak sensor 3 is used for initial detection of refrigerant leaks. Upon the occurrence of a refrigerant leak, a first-level response is triggered, activating an audible and visual alarm and starting the fan 4 to draw the refrigerant from the leaking area to the outside, quickly removing the leaked refrigerant and reducing the accumulation of refrigerant concentration indoors. The middle refrigerant leak sensor 3 is used for refrigerant accumulation monitoring, tracking the rise of refrigerant within the device cavity. When the refrigerant concentration detected by the middle refrigerant leak sensor 3 exceeds a set threshold, a second-level response is triggered, involving the electronic control components. 2. Stop the operation of the heat pump component and increase the exhaust volume of the fan 4 to prevent the refrigerant concentration from continuing to accumulate; the refrigerant leakage sensor 3 at the top is used for refrigerant diffusion monitoring. When the refrigerant concentration detected by the refrigerant leakage sensor 3 at the top exceeds the set threshold, a three-level response is triggered. The electronic control component 2 further increases the exhaust volume of the fan 4 to discharge the refrigerant to the maximum extent, ensuring that the system can effectively handle the refrigerant gas that has diffused to the top of the equipment; the graded response mechanism can take flexible measures according to different stages of refrigerant leakage, effectively prevent accidents from occurring, and ensure the safety of users and equipment, breaking through the planar limitations of traditional leak detection.

[0027] Furthermore, the refrigerant leak sensor 3 includes an infrared light source assembly, a gas chamber, a filter, an infrared detector, and a probe 31. The output end of the infrared light source assembly is aligned with the interior of the gas chamber. The output end of the gas chamber is equipped with a filter, which is matched with the input end of the infrared detector. The infrared detector is electrically connected to the electronic control assembly 2. The probe 31 is hinged to the gas chamber and communicates with it, used to guide the leaked refrigerant in the device into the gas chamber for detection. Refrigerant leak sensors 3 are installed at the bottom, middle, and top of the housing 1, forming a vertical detection array. The refrigerant leak sensor 3 at the bottom is used for initial refrigerant leak detection. When a refrigerant leak occurs, a first-level response is triggered, triggering an audible and visual alarm and activating the fan 4 to draw the refrigerant from the leaking area at the bottom to the outside, quickly removing the leaked refrigerant and reducing the accumulation of refrigerant concentration indoors. The refrigerant leak sensor 3 in the middle is used for refrigerant accumulation monitoring, monitoring the rise of refrigerant in the device cavity. When the refrigerant concentration detected by the refrigerant leak sensor 3 in the middle exceeds a set threshold, a second-level response is triggered, and the electronic control assembly... 2. Stop the operation of the heat pump component and increase the exhaust volume of the fan 4 to prevent the refrigerant concentration from continuing to accumulate; the refrigerant leakage sensor 3 at the top is used for refrigerant diffusion monitoring. When the refrigerant concentration detected by the refrigerant leakage sensor 3 at the top exceeds the set threshold, a three-level response is triggered. The electronic control component 2 further increases the exhaust volume of the fan 4 to discharge the refrigerant to the maximum extent, ensuring that the system can effectively handle the refrigerant gas that has diffused to the top of the equipment; the graded response mechanism can take flexible measures according to different stages of refrigerant leakage, effectively prevent accidents from occurring, and ensure the safety of users and equipment, breaking through the planar limitations of traditional leak detection.

[0028] Furthermore, probe 31 is tilted downwards by 15° relative to refrigerant leak sensor 3.

[0029] Furthermore, the air outlet 5 is equipped with a guide vane, which is tilted downward at 30° relative to the air outlet 5.

[0030] The deflector plate of the air outlet 5 clearly defines the direction of refrigerant discharge, allowing the refrigerant dispersed by the fan 4 to be discharged from the outside of the device in an orderly manner, avoiding disorderly diffusion and flow of refrigerant, and improving the efficiency of refrigerant dispersal.

[0031] Furthermore, the electronic control component 2 is fixedly installed inside the housing 1.

[0032] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A heating protection device for detecting refrigerant leakage, characterized in that: The device includes a housing, an electronic control assembly, a refrigerant leak sensor, and a fan and a heat pump assembly fixedly installed inside the housing. The output end of the fan faces the heat pump assembly and is used to dissipate refrigerant leaking from the heat pump assembly. The housing has an air outlet corresponding to the position of the fan's output end. The refrigerant leak sensor is fixedly installed at the bottom inside the housing. The refrigerant leak sensor, the fan, and the heat pump assembly are all electrically connected to the electronic control assembly.

2. A heating protection device for detecting refrigerant leakage according to claim 1, characterized in that: Several refrigerant leakage sensors are evenly distributed around the bottom perimeter of the casing.

3. A heating protection device for detecting refrigerant leakage according to claim 2, characterized in that: Several refrigerant leakage sensors are provided in the middle and top of the housing. The refrigerant sensors at the bottom and top are coaxially aligned, and the refrigerant sensors in the middle and bottom are spaced apart.

4. A heating protection device for detecting refrigerant leakage according to claim 1, characterized in that: The refrigerant leak sensor includes an infrared light source assembly, a gas chamber, a filter, an infrared detector, and a probe. The output end of the infrared light source assembly is aligned with the interior of the gas chamber. The output end of the gas chamber is equipped with the filter, and the output end of the filter is matched with the input end of the infrared detector. The infrared detector is electrically connected to the electronic control assembly. The probe is hinged to the gas chamber and communicates with the gas chamber, used to guide the leaked refrigerant in the device into the gas chamber for detection.

5. A heating protection device for detecting refrigerant leakage according to claim 4, characterized in that: The probe is tilted downwards at 15° relative to the refrigerant leak sensor.

6. A heating protection device for detecting refrigerant leakage according to claim 1, characterized in that: The air outlet is equipped with a guide plate, which is tilted downward at 30° relative to the air outlet.

7. A heating protection device for detecting refrigerant leakage according to claim 1, characterized in that: The electronic control components are fixedly installed inside the housing.

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