Refrigeration and heat preservation device with automatic alarm function

Abstract

The utility model discloses a cold storage heat preservation device with an automatic alarm function, which comprises a cold storage box, a floater is arranged at the bottom of an inner cavity of the cold storage box, a metal sheet is arranged on the floater, a proximity switch is embedded at the upper end of the inner cavity of the cold storage box, and a whole piece of ice is filled among the floater, the metal sheet and the proximity switch. A wireless signal transmitter is arranged on the upper surface of the refrigerating box and electrically connected with the proximity switch through a wire. The device has the advantages of being low in cost, capable of being repeatedly used, simple in structure and easy to manufacture. Through the simple proximity switch and the wireless signal transmitter, temperature monitoring and automatic alarm of temperature sensitive products such as soldering paste in the transportation process are achieved, and the device is low in failure rate, high in reliability and completely suitable for the complex environment of long-distance logistics freight.

Description

Technical Field

[0001] The utility model relates to the technical field of cold chain logistics, and in particular refers to a refrigeration and heat preservation device with an automatic alarm function. Background Art

[0002] As a temperature-sensitive welding material for precision electronic products, solder paste needs to be stored in a strictly controlled environment within the range of 0-10°C. However, in actual transportation, due to the small amount used, the cost of using refrigerated trucks for delivery is high, so the industry generally uses foam insulation boxes with built-in disposable ice packs for delivery via ordinary trucks. However, this traditional method usually does not keep the temperature for more than 72 hours in summer. For longer distances and remote areas, the transportation time often exceeds four days, causing the solder paste to deteriorate due to the increase in temperature, resulting in economic losses.

[0003] At present, although there are some ice bag designs with temperature measurement and alarm functions, such as "A medical fitted ice bag with temperature measurement and alarm function" with patent number 202021457299.0 by Ji Liuxiang and Li Guojuan, which includes a temperature sensor, multiple power modules, a wireless communication module, an information receiving bracelet and an LED warning light, this design has a complex structure and high cost, and is mainly for medical ice bags, and is not suitable for the transportation of electronic product materials such as solder paste. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the above technical defects and provide a refrigeration and heat preservation device with automatic alarm function. The device can issue a warning message before the temperature of the solder paste rises, so that the solder paste can be replaced in time before it deteriorates, ensuring the storage environment temperature and reducing economic losses.

[0005] In order to solve the above technical problems, the technical solution provided by the utility model is: a refrigeration and heat preservation device with automatic alarm function, comprising a refrigerator, a float is provided at the bottom of the inner cavity of the refrigerator and a metal sheet is provided on the float, a proximity switch is embedded at the upper end of the inner cavity of the refrigerator, a whole block of ice is filled between the float, the metal sheet and the proximity switch, a wireless signal transmitter is provided on the upper surface of the refrigerator and the wireless signal transmitter is electrically connected to the proximity switch through a wire.

[0006] Furthermore, a protective cover for protecting the wireless signal transmitter is provided at the upper end of the refrigerator.

[0007] Furthermore, the refrigerator is made of a non-metallic material with toughness.

[0008] Furthermore, the refrigerator is made of PE material.

[0009] Furthermore, a water inlet is provided on the side of the refrigerator, and a detachable sealing cover is provided on the water inlet.

[0010] Furthermore, the refrigeration and heat preservation device also includes a wireless signal receiver and an alarm device arranged at the monitoring end. The wireless signal transmitter communicates with the wireless signal receiver through wireless signals. When the entire block of ice in the refrigerator is completely melted, causing the float to float up and triggering the proximity switch, the wireless signal transmitter sends an alarm signal to the wireless signal receiver and the wireless signal receiver triggers the alarm device to sound an alarm after receiving the alarm signal.

[0011] Furthermore, the alarm device includes a sound alarm, an indicator light, a display screen and a control module, and the sound alarm, indicator light and display screen are all connected to the control module. When the control module receives an alarm signal from a wireless signal receiver, the control module controls the activation of the sound alarm, indicator light and display screen.

[0012] The advantages of the utility model compared with the prior art are: the advantages of the present application are that it is low-cost, reusable, simple in structure and easy to prepare. Through a simple proximity switch and a wireless signal transmitter, the present application not only realizes the temperature monitoring and automatic alarm of temperature-sensitive products such as solder paste during transportation, but also the device itself has a low failure rate and high reliability, and is fully adapted to the complex environment of long-distance logistics and freight. In addition, the device of the present invention also has a wide range of applicability. It can not only be used for the transportation of solder paste, but also can be used for the transportation temperature monitoring of agricultural products that need to be preserved, such as fresh vegetables and fruits, providing an economical, efficient and reliable solution for the cold chain logistics industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model is a structural schematic diagram of a refrigeration and heat preservation device with an automatic alarm function.

[0014] Figure 2 The utility model is a schematic diagram of the internal structure of the side surface of a floater in a refrigeration and heat preservation device with an automatic alarm function.

[0015] Figure 3 It is a principle block diagram of the alarm device in the utility model.

[0016] As shown in the figure: 1. Refrigerator, 2. Protective cover, 3. Float, 4. Metal sheet, 5. Proximity switch, 6. Wire, 7. Wireless signal transmitter, 8. Whole ice, 9. Water filling port, 10. Wireless signal receiver, 11. Alarm device, 12. Sound alarm, 13. Indicator light, 14. Display screen, 15. Control module. DETAILED DESCRIPTION

[0017] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0018] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings, wherein the same parts are represented by the same reference numerals.

[0019] It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0020] In order to make the contents of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0021] Combined with Figure 1 -Attached Figure 3 A refrigeration and heat preservation device with automatic alarm function includes a refrigerator 1, a float 3 is provided at the bottom of the inner cavity of the refrigerator 1, a metal sheet 4 is provided on the float 3, a proximity switch 5 is embedded at the upper end of the inner cavity of the refrigerator 1, a whole block of ice 8 is filled between the float 3, the metal sheet 4 and the proximity switch 5, and a wireless signal transmitter 7 is provided on the upper surface of the refrigerator 1 and the wireless signal transmitter 7 is electrically connected to the proximity switch 5 through a wire 6. The proximity switch 5 in the present application is not limited to a two-wire switch, and also includes a three-wire or other type of sensor.

[0022] In one embodiment, a protective cover 2 for protecting the wireless signal transmitter 7 is provided at the upper end of the refrigerator 1. The protective cover 2 can effectively prevent interference and damage to the wireless signal transmitter 7 from the external environment, such as dust, water vapor, collision, etc. By adding the protective cover 2, the working stability and reliability of the wireless signal transmitter 7 are significantly improved, thereby ensuring the continuous effectiveness of the automatic alarm function of the entire refrigeration and heat preservation device, and in the specific implementation process, the wireless signal transmitter 7 has its own battery.

[0023] In one embodiment, the refrigerator 1 is made of a non-metallic material with toughness. The main purpose of this design is to be able to withstand the volume expansion and contraction caused by water when it freezes into ice or melts into water. Since the volume of water increases during the freezing process and decreases when it melts, this volume change may cause the refrigerator to deform or even break if it is borne by a refrigerator made of rigid materials. Tough non-metallic materials, such as polyethylene (PE) or polyvinyl chloride (PVC), can flexibly respond to this volume change. They can maintain the integrity of the structure when water freezes and return to its original state when the ice melts, thereby ensuring the durability and heat preservation effect of the refrigerator 1. This design not only improves the service life of the refrigerator 1, but also ensures the stability of its internal environment, providing safer and more reliable storage conditions for refrigerated items.

[0024] In one embodiment, a water inlet 9 is provided on the side of the refrigerator 1, and a detachable sealing cover is provided on the water inlet 9. Through the water inlet 9, the user can conveniently inject an appropriate amount of water into the refrigerator 1 to make a whole block of ice 8. The design of the sealing cover effectively prevents water evaporation and the entry of external impurities, thereby ensuring the cleanliness and stability of the environment in the refrigerator 1.

[0025] In one embodiment, the refrigeration and heat preservation device further comprises a wireless signal receiver 10 and an alarm device 11 arranged at the monitoring end, the wireless signal transmitter 7 communicates with the wireless signal receiver 10 through wireless signals, when the whole block of ice 8 in the refrigerator 1 is completely melted, causing the float 3 to float up and triggering the proximity switch 5, the wireless signal transmitter 7 sends an alarm signal to the wireless signal receiver 10, and the wireless signal receiver 10 triggers the alarm device 11 to alarm after receiving the alarm signal. In one embodiment, the alarm device 11 comprises a sound alarm 12, an indicator light 13, a display screen 14 and a control module 15, the sound alarm 12, the indicator light 13 and the display screen 14 are all connected to the control module 15, when the control module receives the alarm signal from the wireless signal receiver 10, the control module 15 controls the activation of the sound alarm 12, the indicator light 13 and the display screen 14. When the control module 15 receives the alarm signal from the wireless signal receiver 10, it controls the sound alarm 12 to sound a prompt, the indicator light 13 starts to flash, and the display screen 14 displays detailed alarm information. This multifunctional alarm device not only provides a variety of alarm modes, but also provides a rich information display function through the display screen 14, so that the user can understand the real-time status of the refrigerator 1 more intuitively.

[0026] Working principle: The entire heat preservation device is pre-injected with pure water into the refrigerator 1 through the water injection port 9. Before the entire device is used, it is placed upside down so that the float 3 floats to the bottom of the refrigerator 1, and the temperature is lowered to condense the water in the refrigerator 1 into a whole block of ice 8. Before the solder paste is transported and packed, the frozen heat preservation device is placed in the solder paste foam box. At this time, because the water in the water tank 1 condenses into ice, the float 3 is fixed to the bottom of the water tank, the metal sheet 4 and the proximity switch 5 exceed the sensing distance, and the switch is disconnected. When the time is too long, the ice in the refrigerator 1 is completely melted, the float 3 floats to the top of the refrigerator 1, the metal sheet 4 and the proximity switch 5 are close to trigger its closed state, the proximity switch 5 is turned on, and transmitted to the wireless signal transmitter 7 with a battery through the wire 6, and an alarm signal is issued. At this time, the wireless signal transmitter 7 connected to the proximity switch 5 through the wire 6 is activated and emits an alarm signal. The signal is transmitted wirelessly to the wireless signal receiver 10 at the monitoring end. After receiving the signal, the wireless signal receiver 10 controls the alarm device connected thereto to sound an alarm, including warnings of sound, indicator lights and display screens, thereby realizing real-time monitoring and alarm of temperature changes in the refrigerator. After the monitoring personnel receive the signal through the receiver, they can replace the insulation ice pack in the solder paste insulation box in time to prevent the solder paste from deteriorating due to rising temperature.

[0027] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A refrigeration and heat preservation device with automatic alarm function, characterized in that: The invention comprises a refrigerator (1), wherein a float (3) is provided at the bottom of the inner cavity of the refrigerator (1), and a metal sheet (4) is provided on the float (3); a proximity switch (5) is embedded at the upper end of the inner cavity of the refrigerator (1); a whole block of ice (8) is filled between the float (3), the metal sheet (4) and the proximity switch (5); and a wireless signal transmitter (7) is provided on the upper surface of the refrigerator (1), and the wireless signal transmitter (7) is electrically connected to the proximity switch (5) through a wire (6).

2. A refrigeration and heat preservation device with automatic alarm function according to claim 1, characterized in that: The upper end of the refrigerator (1) is provided with a protective cover (2) for protecting the wireless signal transmitter (7).

3. The refrigeration and heat preservation device with automatic alarm function according to claim 1, characterized in that: The cold storage box (1) is made of a non-metallic material having toughness.

4. A refrigeration and heat preservation device with automatic alarm function according to claim 3, characterized in that: The cold storage box (1) is made of PE material.

5. The refrigeration and heat preservation device with automatic alarm function according to claim 1, characterized in that: The side of the refrigerator (1) is provided with a water inlet (9), and the water inlet (9) is provided with a detachable sealing cover.

6. The refrigeration and heat preservation device with automatic alarm function according to claim 1, characterized in that: The refrigeration and heat preservation device also includes a wireless signal receiver (10) and an alarm device (11) arranged at a monitoring end. The wireless signal transmitter (7) communicates with the wireless signal receiver (10) via wireless signals. When the entire block of ice (8) in the cold storage box (1) is completely melted, causing the float (3) to float up and triggering the proximity switch (5), the wireless signal transmitter (7) sends an alarm signal to the wireless signal receiver (10), and the wireless signal receiver (10) triggers the alarm device (11) to sound an alarm after receiving the alarm signal.

7. A refrigeration and heat preservation device with automatic alarm function according to claim 6, characterized in that: The alarm device (11) comprises a sound alarm (12), an indicator light (13), a display screen (14) and a control module (15); the sound alarm (12), the indicator light (13) and the display screen (14) are all connected to the control module (15); when the control module receives an alarm signal from a wireless signal receiver (10), the control module (15) controls the activation of the sound alarm (12), the indicator light (13) and the display screen (14).

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