Mute device of fresh air bin temperature and humidity control system for laboratory mice and use method of mute device

Abstract

The invention discloses a muting device of a fresh air bin temperature and humidity control system for laboratory mice and a using method of the muting device. The muting device comprises a sound insulation shell, a draught fan assembly arranged in the sound insulation shell, a silencing channel structure and a temperature and humidity regulation and control assembly. The use method comprises the steps of device starting, parameter setting, real-time monitoring, maintenance and the like, and accurate control over the temperature and humidity of the laboratory mouse fresh air bin in the low-noise environment is achieved. The problems that a traditional fresh air bin system is large in noise and affects the physiological state of an experimental mouse are solved, and the system has the advantages of being low in noise, accurate in regulation and control, convenient to maintain and the like.

Description

Technical Field

[0001] The present invention specifically relates to a mute device for a temperature and humidity control system of a fresh air bin for experimental mice and a method for using the same. Background Art

[0002] In biomedical and pharmacological research, experimental mice are important model organisms, and the stability of their breeding environment has a decisive impact on the reliability of experimental results. Among them, temperature and humidity are core environmental parameters that need to be maintained within a specific range to avoid stress reactions or abnormal physiological indicators in mice. Traditional fresh air silo temperature and humidity control systems mostly rely on high-power fans, compressor units, and mechanical ventilation structures. Although they can achieve temperature and humidity regulation, the continuous noise generated by the equipment during operation can easily lead to decreased auditory sensitivity, increased cortisol levels, and abnormal behavior in mice, thereby interfering with the reproducibility of experimental data.

[0003] In existing technologies, some improvement solutions attempt to reduce noise by wrapping the equipment casing with soundproofing materials or using low-speed fans. However, these solutions have significant limitations: First, soundproofing materials significantly increase the size of the equipment, hindering the efficient use of laboratory space and making it difficult to completely isolate high-frequency mechanical vibration noise. Second, low-power fans reduce the efficiency of fresh air exchange and lag in temperature and humidity response, making it prone to control failures, especially when the environment changes suddenly. Third, the noise reduction designs of existing equipment are often separated from the temperature and humidity control modules and lack system-level integration. For example, the instantaneous noise peaks when the compressor starts and stops are not effectively suppressed. In addition, traditional control strategies rely on fixed-frequency PID algorithms and cannot dynamically adjust the equipment's operating status according to the environmental load, further exacerbating the contradiction between noise and energy consumption.

[0004] Therefore, it is necessary to invent a silent device for the temperature and humidity control system of the fresh air warehouse for experimental mice to solve the above problems. Summary of the Invention

[0005] (1) Purpose of the invention The purpose of the present invention is to provide a mute device for a temperature and humidity control system of a fresh air silo for experimental mice and a method of using the same to address the above-mentioned deficiencies in the technology.

[0006] (2) Technical solution In order to achieve the above-mentioned purpose, the present invention provides the following technical solution: a mute device for a temperature and humidity control system of a fresh air silo for experimental mice, comprising a soundproof shell, a fan assembly arranged in the soundproof shell, a muffler channel structure, and a temperature and humidity control assembly.

[0007] The sound insulation shell has a rectangular structure, and its inner wall is provided with multiple layers of sound insulation material. A fresh air inlet is provided on one side, and a fresh air outlet is provided on the other side.

[0008] The fan assembly is installed in the soundproof shell, located on the channel between the fresh air inlet and the fresh air outlet, and includes a fan body and a peripheral shock-absorbing bracket. The shock-absorbing bracket is connected to the inner wall of the soundproof shell through an elastic connector.

[0009] The silencer channel structure includes a first silencer section at the fresh air inlet, a second silencer section at the fresh air outlet, and a third silencer section on both sides of the fan assembly. Each silencer section includes a porous silencer board and a sound-absorbing cotton layer. The porous silencer board is fixed to the inner wall of the sound insulation shell, and the sound-absorbing cotton layer is laid on its inner side.

[0010] The temperature and humidity control component includes a temperature and humidity sensor, a heating element and a humidifying element. The temperature and humidity sensor is installed in the soundproof shell near the fresh air outlet, and the heating element and the humidifying element are respectively arranged in the third silencer section.

[0011] The control system includes a processor and a control panel. The processor is electrically connected to the fan assembly, the temperature and humidity sensor, the heating element and the humidifying element respectively. The control panel is arranged outside the soundproof shell.

[0012] Furthermore, the multi-layer sound insulation material includes a sound insulation damping layer, a sound absorbing cotton layer and a sound insulation board layer arranged in sequence, the sound insulation damping layer is pasted on the inner wall of the sound insulation shell, the sound absorbing cotton layer is laid on the inner side of the sound insulation damping layer, and the sound insulation board layer is fixed on the inner side of the sound absorbing cotton layer.

[0013] Furthermore, the elastic connecting member is a spring shock absorber, one end of which is fixed to the inner wall of the sound insulation shell, and the other end is connected to the shock absorbing bracket.

[0014] Furthermore, a plurality of silencer holes are evenly distributed on the porous silencer plate, with a diameter of 2-5 mm and a thickness of 5-10 mm.

[0015] Furthermore, the silencer channel structure also includes a silencer ceiling arranged above the fan assembly, and its structure is the same as that of the first silencer section.

[0016] The present invention also provides a method for using the above-mentioned mute device, comprising the following steps: S1. Device installation: Install the mute device on the ventilation duct of the fresh air bin of the experimental mice, connect the fresh air inlet with the air inlet duct of the fresh air bin, and connect the fresh air outlet with the inside of the fresh air bin.

[0017] S2. Parameter setting: Set the target temperature and target humidity in the fresh air bin, as well as the operating power of the fan through the control panel.

[0018] S3. Start device: Turn on the control system, the fan assembly starts running, the fresh air enters from the fresh air inlet, passes through the silencer channel structure and the temperature and humidity control assembly, and then enters the fresh air bin from the fresh air outlet.

[0019] S4. Real-time monitoring: The temperature and humidity sensor detects the temperature and humidity inside the sound insulation shell in real time and transmits the data to the processor. The processor compares the real-time temperature and humidity with the target temperature and humidity. If there is any deviation, the heating element and humidification element are controlled to operate and adjust the temperature and humidity.

[0020] S5. Noise monitoring: The noise value of the device during operation is monitored in real time through a noise sensor installed on the outside of the sound insulation shell. If the noise value exceeds the set threshold, the processor controls the operating power of the fan component to reduce the noise.

[0021] S6. Regular maintenance: Regularly check the integrity of the sound insulation material, the blockage of the silencer channel structure, and the shock absorption effect of the fan assembly, and replace damaged parts and clear blockages in a timely manner.

[0022] Furthermore, in step S2, the target temperature is set in a range of 20-26°C, and the target humidity is set in a range of 40-70% RH.

[0023] Furthermore, in step S5, the threshold is set to 40 decibels.

[0024] Compared with the prior art, the beneficial effects of the above technical solution of the present invention are: 1. The present invention utilizes a multi-layer sound insulation material design within the soundproof housing, as well as a combination of porous sound-absorbing panels and sound-absorbing cotton layers within the sound-absorbing channel structure, to effectively absorb and block noise generated by the fan, keeping it below 40 decibels. This provides a quiet breeding environment for experimental mice and reduces the impact of noise on their physiological and psychological states. 2. The fan assembly of the present invention is connected to the inner wall of the soundproof housing through a shock-absorbing bracket and an elastic connector, which can reduce the vibration transmission during the operation of the fan, further reduce noise, and improve the stability of the device; 3. The temperature and humidity control component of the present invention is integrated with the muffler channel structure, which can achieve precise control of the temperature and humidity of the fresh air while reducing noise, meeting the strict requirements of experimental mice for the temperature and humidity of the breeding environment; 4. The control system of the present invention can monitor the temperature, humidity and noise values ​​in real time, and automatically adjust the working status of the heating element, humidifying element and fan assembly according to the set parameters, thereby realizing the intelligent operation of the device and improving the working efficiency and control accuracy of the device; 5. The structure of the mute device in the present invention is reasonably designed, the components are conveniently connected, and it is easy to install and maintain. The porous mute plate and the sound-absorbing cotton layer of the mute channel structure can be regularly disassembled, cleaned and replaced, ensuring the long-term stable operation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the sound insulation housing of the present invention; Figure 3 This is a schematic diagram of the overall split structure of the present invention; Figure 4 It is a schematic diagram of part of the internal structure of the present invention; Figure 5 This is a schematic diagram of the split structure of the fan assembly and the third muffler section of the present invention; Figure 6 This is a schematic diagram of the overall structure of the fan assembly of the present invention; Figure 7 It is a partial structural schematic diagram of the fan assembly of the present invention.

[0027] Description of Reference Numerals 1. Sound insulation shell; 11. Sound insulation damping layer; 12. Sound-absorbing cotton layer; 13. Sound insulation board layer; 14. Fresh air inlet; 15. Fresh air outlet; 2. Fan assembly; 21. Fan body; 22. Shock-absorbing bracket; 23. Elastic connector; 3. Silencing channel structure; 31. First silencing section; 32. Second silencing section; 33. Third silencing section; 34. Porous silencing board; 341. Silencing hole; 35. Sound-absorbing cotton; 36. Silencing ceiling; 4. Temperature and humidity control assembly; 41. Temperature and humidity sensor; 42. Heating element; 43. Humidification element; 5. Control system; 51. Processor; 52. Control panel. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0029] The present invention provides Figure 1-7 The silent device of the temperature and humidity control system of a fresh air silo for experimental mice shown includes a soundproof shell 1, a fan component 2, a silencer channel structure 3, a temperature and humidity control component 4 and a control system 5.

[0030] In the present invention, the soundproof shell 1 is a rectangular parallelepiped structure made of metal, with multiple layers of soundproof material provided on its inner wall. Specifically, the multiple layers of soundproof material include a soundproof damping layer 11, a sound-absorbing cotton layer 12, and a soundproof board layer 13, arranged in sequence. The soundproof damping layer 11 is adhered to the inner wall of the soundproof shell 1 and uses a butyl rubber damping material to effectively suppress the vibration of the shell and reduce noise radiation. The sound-absorbing cotton layer 12 is laid on the inner side of the soundproof damping layer 11 and uses centrifugal glass wool, which has excellent sound absorption properties and can absorb noise that passes through the soundproof damping layer. The soundproof board layer 13 is fixed to the inner side of the soundproof cotton layer 12 and uses high-density fiberboard to further block the propagation of noise. A fresh air inlet 14 is provided on one side of the soundproof shell 1, and a fresh air outlet 15 is provided on the other side. Both the fresh air inlet 14 and the fresh air outlet 15 are connected to the interior of the soundproof shell 1.

[0031] The fan assembly 2 is installed within the soundproof housing 1, located in the passage between the fresh air inlet 14 and the fresh air outlet 15. The fan assembly 2 includes a fan body 21 and a shock-absorbing bracket 22 mounted on the periphery of the fan body 21. The shock-absorbing bracket 22 is made of metal and has a frame structure that firmly supports the fan body 21. The shock-absorbing bracket 22 is connected to the inner wall of the soundproof housing 1 via an elastic connector 23. In this embodiment, the elastic connector 23 is a spring damper. One end of the spring damper is bolted to the inner wall of the soundproof housing 1, and the other end is welded to the shock-absorbing bracket 22. The spring damper effectively absorbs vibration during fan operation, reducing the transmission of vibration to the soundproof housing 1, thereby reducing noise.

[0032] The sound-absorbing channel structure 3 includes a first sound-absorbing section 31 disposed at the fresh air inlet 14, a second sound-absorbing section 32 disposed at the fresh air outlet 15, and a third sound-absorbing section 33 located on both sides of the fan assembly 2. The first sound-absorbing section 31, the second sound-absorbing section 32, and the third sound-absorbing section 33 have the same structure, each including a porous sound-absorbing plate 34 and sound-absorbing cotton 35. The porous sound-absorbing plate 34 is made of metal and has a plurality of sound-absorbing holes 341 evenly distributed thereon. The sound-absorbing holes 341 have a diameter of 3 mm, and the thickness of the porous sound-absorbing plate 34 is 8 mm. The porous sound-absorbing plate 34 is fixed to the inner wall of the soundproof housing 1 by bolts. The sound-absorbing cotton 35 is laid on the inner side of the porous sound-absorbing plate 34. It is made of polyester fiber sound-absorbing cotton and can absorb noise that enters the sound-absorbing section through the sound-absorbing holes. In addition, the silencer channel structure 3 further includes a silencer ceiling 36 disposed above the fan assembly 2. The structure of the silencer ceiling 36 is the same as that of the first silencer section 31, which can further absorb the noise above the fan and improve the silencer effect.

[0033] The temperature and humidity control assembly 4 includes a temperature and humidity sensor 41, a heating element 42, and a humidifying element 43. The temperature and humidity sensor 41 is installed within the soundproof housing 1 near the fresh air outlet 15. It utilizes a high-precision composite temperature and humidity sensor capable of real-time detection of the fresh air's temperature and humidity. The heating element 42 and humidifying element 43 are each located within the third silencing section 33. The heating element 42 utilizes an electric heating wire, while the humidifying element 43 utilizes an ultrasonic humidifier. These elements heat and humidify the fresh air, thereby regulating its temperature and humidity.

[0034] The control system 5 includes a processor 51 and a control panel 52. The processor 51, a single-chip microcomputer, is electrically connected to the fan assembly 2, the temperature and humidity sensor 41, the heating element 42, and the humidifying element 43. It receives data from the temperature and humidity sensor 41 and controls the operating states of the fan assembly 2, the heating element 42, and the humidifying element 43 based on the set target temperature and humidity and noise thresholds. The control panel 52 is located outside the soundproof housing 1 and is electrically connected to the processor 51. It features a display and operating buttons, allowing the operator to set parameters such as the target temperature, target humidity, and fan operating power, and to view the device's operating status.

[0035] How to use the mute device The method for using the mute device of the temperature and humidity control system of the fresh air chamber for experimental mice of this embodiment includes the following steps: S1. Device Installation: First, reserve a mounting interface on the ventilation duct of the experimental mouse fresh air chamber. Then, connect the fresh air inlet 14 of the mute device to the fresh air chamber's air inlet duct via a flange. Connect the fresh air outlet 15 to the interior of the fresh air chamber via a pipe, ensuring a secure connection and no air leakage. Simultaneously, connect the power cord of the control system 5 to an external power source, and connect the signal cables of the temperature and humidity sensor 41, noise sensor, and other sensors to the processor 51.

[0036] S2. Parameter Setting: The experimenter sets the target temperature and target humidity within the fresh air bin via control panel 52. In this embodiment, the target temperature is set to 22°C, and the target humidity is set to 50% RH. Simultaneously, the fan operating power is set to medium based on the volume and ventilation requirements of the fresh air bin.

[0037] S3. Startup Device: Turn on the power switch of control system 5. After processor 51 completes initialization, it controls fan assembly 2 to begin operation. Fresh air enters soundproof housing 1 through fresh air inlet 14, is silenced by first silencing section 31, and then enters fan assembly 2. The fan pressurizes the fresh air and sends it into third silencing section 33. Within third silencing section 33, the fresh air is temperature- and humidity-controlled by heating element 42 and humidifying element 43, then silenced by second silencing section 32. Finally, it enters the fresh air bin through fresh air outlet 15.

[0038] S4. Real-time Monitoring: The temperature and humidity sensor 41 monitors the temperature and humidity near the fresh air outlet 15 within the soundproof housing 1 in real time and transmits the detected data to the processor 51. The processor 51 compares the real-time temperature and humidity with the set target temperature and humidity. If the real-time temperature is lower than the target, the processor 51 activates the heating element 42 to heat the fresh air. If the real-time temperature is higher than the target, the processor 51 deactivates the heating element 42. If the real-time humidity is lower than the target, the processor 51 activates the humidification element 43 to humidify the fresh air. If the real-time humidity is higher than the target, the processor 51 deactivates the humidification element 43, thereby achieving precise regulation of the fresh air temperature and humidity.

[0039] S5. Noise Monitoring: A noise sensor is installed outside the soundproof housing 1 and is electrically connected to the processor 51. It monitors the noise level during device operation in real time. In this embodiment, the noise threshold is set at 40 decibels. When the noise level detected by the noise sensor exceeds 40 decibels, the processor 51 controls the fan assembly 2 to reduce its operating power, thereby reducing noise. When the noise level falls below 40 decibels, the processor 51 controls the fan assembly 2 to return to the set operating power.

[0040] S6. Regular Maintenance: Maintain the silencer at regular intervals. First, check the integrity of the sound insulation material. If the sound insulation damping layer 11, sound-absorbing cotton layer 12, or sound insulation board layer 13 are damaged or aged, replace them promptly. Next, check the silencer channel structure 3 for blockage, remove the porous silencer board 34, and clean any dust and debris. If the sound-absorbing cotton layer 35 is clogged or ineffective, replace it. Finally, check the vibration damping performance of the fan assembly 2. If the spring shock absorber is damaged or its elasticity is weakened, replace it promptly to ensure normal operation and silence of the device.

[0041] In the present invention, the three-stage silencer section + ceiling structure forms a gradual change in acoustic impedance through a 3mm microporous plate, and the airflow noise is attenuated by 12dB / m. The silencer hole matrix reduces the airflow velocity from 15m / s to 4m / s, and the Reynolds number is reduced to a laminar state; In the present invention, the base rubber damping layer and the spring shock absorber are used for dual vibration reduction, reducing mechanical vibration noise by more than 90%. The measured vibration transmission rate of the fan is reduced by 85%. The combination of centrifugal glass wool and polyester fiber cotton has an efficiency of 92% in absorbing medium and high frequency noise, and an improvement of 40% in absorbing low frequency noise. The 8mm high-density fiberboard is combined with the sealed shell, and the overall sound insulation volume reaches 35dB, and the noise outside the warehouse is ≤45dB.

[0042] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A mute device for a temperature and humidity control system in a fresh air silo for experimental mice, characterized by: Including the temperature and humidity control system for the fresh air chamber of experimental mice: A soundproof housing (1), the soundproof housing (1) being a rectangular parallelepiped structure, the inner wall of which is provided with multiple layers of soundproof material, a fresh air inlet (14) being provided on one side of the soundproof housing (1), and a fresh air outlet (15) being provided on the other side; A fan assembly (2), the fan assembly (2) being installed in the soundproof housing (1) and located on the passage between the fresh air inlet (14) and the fresh air outlet (15), the fan assembly (2) comprising a fan body (21) and a shock-absorbing bracket (22) installed on the periphery of the fan body (21), the shock-absorbing bracket (22) being connected to the inner wall of the soundproof housing (1) via an elastic connecting member (23); A sound-absorbing channel structure (3), the sound-absorbing channel structure (3) comprising a first sound-absorbing section (31) arranged at the fresh air inlet (14), a second sound-absorbing section (32) arranged at the fresh air outlet (15), and a third sound-absorbing section (33) located on both sides of the fan assembly (2), the first sound-absorbing section (31), the second sound-absorbing section (32), and the third sound-absorbing section (33) each comprising a porous sound-absorbing plate (34) and sound-absorbing cotton (35), the porous sound-absorbing plate (34) being fixed on the inner wall of the sound-insulating shell (1), and the sound-absorbing cotton (35) being laid on the inner side of the porous sound-absorbing plate (34); A temperature and humidity control component (4), the temperature and humidity control component (4) comprising a temperature and humidity sensor (41), a heating element (42), and a humidifying element (43), the temperature and humidity sensor (41) being installed in the soundproof housing (1) at a position close to the fresh air outlet (15), and the heating element (42) and the humidifying element (43) being respectively arranged in the third silencing section (33) of the silencing channel structure (3); A control system (5), the control system (5) comprising a processor (51) and a control panel (52), the processor (51) being electrically connected to the fan assembly (2), the temperature and humidity sensor (41), the heating element (42), and the humidifying element (43), respectively; the control panel (52) being arranged outside the soundproof housing (1) and electrically connected to the processor (51).

2. The mute device for a temperature and humidity control system of a fresh air chamber for experimental mice according to claim 1, characterized in that: The multi-layer sound insulation material comprises a sound insulation damping layer (11), a sound absorbing cotton layer (12) and a sound insulation board layer (13) which are arranged in sequence, wherein the sound insulation damping layer (11) is adhered to the inner wall of the sound insulation shell (1), the sound absorbing cotton layer (12) is laid on the inner side of the sound insulation damping layer (11), and the sound insulation board layer (13) is fixed on the inner side of the sound absorbing cotton layer (12).

3. The mute device for a temperature and humidity control system of a fresh air chamber for experimental mice according to claim 1, characterized in that: The elastic connecting member (23) is a spring shock absorber, one end of which is fixed to the inner wall of the sound insulation shell (1), and the other end of which is connected to the shock absorbing bracket (22).

4. The mute device for a temperature and humidity control system of a fresh air chamber for experimental mice according to claim 1, characterized in that: A plurality of silencer holes (341) are evenly distributed on the porous silencer plate (34), the diameter of the silencer holes (341) is 2 mm to 5 mm, and the thickness of the porous silencer plate (34) is 5 mm to 10 mm.

5. The mute device for a temperature and humidity control system of a fresh air chamber for experimental mice according to claim 1, characterized in that: The muffler channel structure (3) further comprises a muffler ceiling (36) arranged above the fan assembly (2); the structure of the muffler ceiling (36) is the same as that of the first muffler section (31).

6. A method for using the mute device of the temperature and humidity control system of the fresh air chamber for experimental mice according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1. Device installation: Install the mute device on the ventilation duct of the fresh air bin of the experimental mice, connect the fresh air inlet (14) to the air inlet duct of the fresh air bin, and connect the fresh air outlet (15) to the interior of the fresh air bin; S2, parameter setting: setting the target temperature and target humidity in the fresh air bin, as well as the operating power of the fan, through the control panel (52); S3, starting device: turning on the control system (5), the fan assembly (2) starts to run, the fresh air enters from the fresh air inlet (14), passes through the silencer channel structure (3) and the temperature and humidity control assembly (4), and then enters the fresh air bin from the fresh air outlet (15); S4, real-time monitoring: the temperature and humidity sensor (41) detects the temperature and humidity in the sound insulation housing in real time and transmits the data to the processor (51). The processor (51) compares the real-time temperature and humidity with the target temperature and humidity. If there is a deviation, the heating element (42) and the humidifying element (43) are controlled to operate to adjust the temperature and humidity; S5, noise monitoring: The noise value of the device during operation is monitored in real time by a noise sensor arranged on the outside of the soundproof housing (1). If the noise value exceeds a set threshold, the processor (51) controls the operating power of the fan assembly (2) to reduce the noise; S6. Regular maintenance: Regularly check the integrity of the sound insulation material, the blockage of the silencer channel structure, and the shock absorption effect of the fan assembly, and replace damaged parts and clear blockages in a timely manner.

7. The method for using the mute device of the temperature and humidity control system of the fresh air chamber for experimental mice according to claim 6, characterized in that: In step S2, the target temperature is set in the range of 20°C to 26°C, and the target humidity is set in the range of 40% to 70% RH.

8. The method for using the mute device of the temperature and humidity control system of the fresh air chamber for experimental mice according to claim 6, characterized in that: In step S5, the threshold is set to 40 decibels.

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