Novel intelligent refrigerant detection module
By designing an intelligent refrigerant detection module in the refrigerant system and using refrigerant detection sensors to detect the leakage of R290 refrigerant, the leakage detection problem caused by the flammability of R290 refrigerant is solved, and the safe operation and rapid early warning of the equipment are achieved.
Patent Information
- Application Number
- CN202421832178.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-07-31
AI Technical Summary
The flammability of R290 refrigerant leads to the possibility of working fluid leakage in the refrigeration system, and the existing technology is difficult to effectively detect and warn in real time, affecting the safe operation of the equipment.
A new type of intelligent refrigerant detection module is designed. By setting a refrigerant detection sensor in the outer shell, the refrigerant gas concentration in the air inside the device is detected, the refrigerant gas leakage situation is determined, and an early warning is issued to the external receiving end through the PWM signal.
Real-time and rapid detection of refrigerant gas concentration is achieved, ensuring the safety of equipment use and avoiding potential safety risks caused by leakage.
Smart Images
Figure CN222925690U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sensors, in particular to a new type of intelligent refrigerant detection module. Background Technique
[0002] As a new type of green and environment-friendly refrigerant, R290 is widely used in the number of refrigeration equipment globally and has good market prospects. The disadvantage of using R290 as a refrigerant is the flammability of R290. Leakage of the working medium may occur in components such as the compressor, condenser, evaporator, and pipeline of the refrigeration system, and electronic components such as thermostats, compressor relays, and lighting lamps may all be ignition sources. To ensure safe operation, the R290 refrigeration system should be enclosed, and the refrigeration system and control components should be set in different spaces respectively. A gas leakage detection function module should be installed in places where leakage is likely to occur. Therefore, we propose a new type of intelligent refrigerant detection module. Content of the Utility Model
[0003] To solve the problems in the background technique, the utility model discloses a new type of intelligent refrigerant detection module. By setting a refrigerant detection sensor inside the housing, the utility model aims to facilitate real-time and rapid detection of the concentration of refrigerant gas and ensure the safe use of the equipment.
[0004] To achieve the purpose of the utility model, the following technical scheme is adopted:
[0005] A new type of intelligent refrigerant detection module includes a housing and a refrigerant detection sensor installed inside the housing. The housing is composed of an upper cover and a base. The upper cover is snap-connected to the base, and a refrigerant detection sensor is arranged between the upper cover and the base. The refrigerant detection sensor is used to detect the concentration of refrigerant gas in the air inside the equipment to determine the leakage condition of the refrigerant gas and send a PWM signal to an external receiving end. The refrigerant detection sensor is provided with a socket, and the socket is connected to a plug on the external receiving end.
[0006] The upper surface of the upper cover is distributed with holes for air intake.
[0007] Both sides of the base are provided with fixing plates, and both fixing plates are provided with holes for installation.
[0008] The refrigerant detection sensor includes a PCB board, a power supply, an MCU, an ESD circuit, a filter, an EEPROM, a gas sensor element, and a MOS transistor. The PCB board is fixedly installed on the inner wall of the base, and the front surface of the PCB board is provided with a power supply, an MCU, an ESD circuit, a filter, an EEPROM, and a gas sensor element that are electrically connected.
[0009] One end of the PCB board is provided with a socket that is electrically connected, and the socket passes through the side surface of the base.
[0010] The front side of the PCB board is also provided with an indicator light.
[0011] The gas sensor is mounted on the front side of the PCB board. The gas sensor is arranged directly below the hole for air intake on the upper cover. The gas sensor is electrically connected to an MOS transistor, and the MOS transistor is mounted on the front side of the PCB board.
[0012] For the novel intelligent refrigerant detection module of the present utility model, the present utility model has strong practicability and is very convenient to use. By providing a fixing plate on the outer shell, it is convenient for installation, maintenance or replacement; by providing a refrigerant detection sensor, it is convenient to detect the concentration of refrigerant gas in real time and quickly, ensuring the safe use of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;
[0014] Figure 2 is a cross-sectional view of the present utility model;
[0015] Figure 3 is a top view of the PCB board of the present utility model;
[0016] In the figure: 1, upper cover; 2, base; 3, fixing plate; 4, PCB board; 5, power supply; 6, socket; 7, MCU; 8, ESD circuit; 9, indicator light; 10, filter; 11, EEPROM; 12, gas sensor; 13, MOS transistor. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0017] The present utility model can be explained in detail through the following embodiments. The purpose of disclosing the present utility model is to protect all technical improvements within the scope of the present utility model.
[0018] Combined with the attached Figures 1 to 3 A novel intelligent refrigerant detection module includes a housing and a refrigerant detection sensor installed inside the housing. The housing is composed of an upper cover 1 and a base 2. The upper cover 1 and the base 2 are snap-connected. A refrigerant detection sensor is arranged between the upper cover 1 and the base 2. The refrigerant detection sensor is used to detect the concentration of refrigerant gas in the air inside the equipment to determine the leakage condition of the refrigerant gas and send a PWM signal to an external receiving end. The refrigerant detection sensor is provided with a socket 6, and the socket 6 is connected to a plug on the external receiving end.
[0019] The upper part of the upper cover 1 is distributed with holes for air intake. The leaked R290 refrigerant gas inside the equipment enters the housing through each hole for air intake, so that the internal refrigerant detection sensor can detect the gas concentration.
[0020] Both sides of the base 2 are provided with fixing plates 3, and both fixing plates 3 are provided with holes for installation, which is convenient for its installation, maintenance or replacement.
[0021] The refrigerant detection sensor includes a PCB board 4, a power supply 5, an MCU 7, an ESD circuit 8, a filter 10, an EEPROM 11, a gas sensor element 12, and a MOS transistor 13. The PCB board 4 is fixedly installed on the inner wall of the base 2. On the front of the PCB board 4, there are electrically connected the power supply 5, the MCU 7, the ESD circuit 8, the filter 10, the EEPROM 11, and the gas sensor element 12.
[0022] One end of the PCB board 4 is provided with a socket 6 that is electrically connected. The socket 6 passes through the side of the base 2, and the plug on the external receiving end is inserted into the socket 6. A 5V power supply is input to the refrigerant detection sensor through the socket 6, and the PWM signal of the refrigerant detection sensor status is output through the socket 6.
[0023] The front of the PCB board 4 is also provided with an indicator light 9. The indicator light 9 is used to identify the current status of the refrigerant detection sensor, which is convenient for the factory to conduct debugging.
[0024] The gas sensor element 12 is mounted on the front of the PCB board 4. The gas sensor element 12 is arranged directly below the hole for air intake of the upper cover 1. The gas sensor element 12 is electrically connected to a MOS transistor 13. The MOS transistor 13 is mounted on the front of the PCB board 4, and the MOS transistor 13 controls the PWM pulse power supply of the heating wire of the gas sensor element 12.
[0025] In the use of the novel intelligent refrigerant detection module described in the embodiment, first install the outer shell at the place where the R290 refrigerant gas in the equipment is likely to leak. After installation, install the plug on the external receiving end on the socket 6. Input a 5V power supply to the refrigerant detection sensor through the socket 6, and perform a power-on preheating for 2 - 3 minutes. After the preheating is completed, enter normal monitoring, and output the PWM signal of the refrigerant detection sensor status through the socket 6. The leaked R290 refrigerant gas in the equipment enters the outer shell through each air intake hole. The gas sensor element 12 detects the concentration of the R290 refrigerant gas. The MCU 7 drives the MOS transistor 13 to generate a PWM signal to supply power to the heating wire of the gas sensor element 12, with a period of 4MS. After the gas sensor element 12 detects the leakage of the R290 refrigerant gas, it sends a PWM signal to the MCU 7. The MCU 7 outputs the PWM signal of the refrigerant detection sensor status through the socket 6, and a warning is sent out by the external signal receiving end.
[0026] The parts not detailed in the present utility model are prior art. Although the present utility model is specifically shown and introduced in combination with the preferred implementation embodiments, there are many methods and ways to specifically implement this technical solution. The above description is only the preferred implementation manner of the present utility model. However, those skilled in the art should understand that various changes can be made to the present utility model in terms of form and details without departing from the spirit and scope of the present utility model defined by the appended claims, and all of them fall within the protection scope of the present utility model.
Claims
1. A novel intelligent refrigerant detection module comprises a housing and a refrigerant detection sensor installed in the housing, wherein the housing is composed of an upper cover (1) and a base (2), the upper cover (1) and the base (2) are snap-connected, and a refrigerant detection sensor is arranged between the upper cover (1) and the base (2), and the module is characterized in that: The refrigerant detection sensor is used to detect the refrigerant gas concentration in the air inside the equipment to determine the refrigerant gas leakage status and send a PWM signal to the external receiving end. The refrigerant detection sensor is provided with a socket (6), and the socket (6) is connected to the plug on the external receiving end.
2. The novel intelligent refrigerant detection module according to claim 1 is characterized in that: The upper surface of the upper cover (1) is provided with air intake holes.
3. The novel intelligent refrigerant detection module according to claim 1 is characterized in that: The base (2) is provided with fixing plates (3) on both sides, and both fixing plates (3) are provided with holes for installation.
4. The novel intelligent refrigerant detection module according to claim 1 is characterized in that: The refrigerant detection sensor comprises a PCB board (4), a power supply (5), an MCU (7), an ESD circuit (8), a filter (10), an EEPROM (11), a gas sensor (12) and a MOS tube (13). The PCB board (4) is fixedly mounted on the inner wall of the base (2). The front side of the PCB board (4) is provided with an electrically connected power supply (5), an MCU (7), an ESD circuit (8), a filter (10), an EEPROM (11) and a gas sensor (12).
5. The novel intelligent refrigerant detection module according to claim 4 is characterized in that: One end of the PCB board (4) is provided with an electrically connected socket (6), and the socket (6) passes through the side surface of the base (2).
6. The novel intelligent refrigerant detection module according to claim 4 is characterized in that: An indicator light (9) is also provided on the front side of the PCB board (4).
7. The novel intelligent refrigerant detection module according to claim 4 is characterized in that: The gas sensor (12) is mounted on the front side of the PCB board (4); the gas sensor (12) is arranged directly below the air inlet hole of the upper cover (1); the gas sensor (12) is electrically connected to a MOS tube (13); and the MOS tube (13) is mounted on the front side of the PCB board (4).