Portable phase change refrigeration box and wireless monitoring system thereof

Abstract

The utility model belongs to the technical field of refrigeration monitoring, and discloses a portable phase change refrigeration box and a wireless monitoring system thereof, the portable phase change refrigeration box comprises a refrigeration box body, the inner wall and the bottom of the refrigeration box body are provided with phase change layers, the inner cavity of the refrigeration box body is provided with an opening and closing mechanism, the opening and closing mechanism is provided with a sealing cover, and the sealing cover is connected with the refrigeration box body. Through cooperation of a first temperature sensor, a second temperature sensor, a third temperature sensor and a wireless radio frequency chip, the first temperature sensor, the second temperature sensor and the third temperature sensor can monitor the temperature change in the refrigeration box body in real time, and a compressor is started for refrigeration according to the temperature change condition; and meanwhile, the wireless radio frequency chip is used for transmitting data to display software of the mobile terminal in a wireless mode, so that a user can conveniently monitor the temperature change in the refrigeration box in real time, the temperature interval can be conveniently adjusted according to different stored foods, and the food storage effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of refrigeration monitoring, specifically relates to a portable phase change refrigeration box and wireless monitoring system thereof. BACKGROUND

[0002] Refrigerators and freezers are the most commonly used household appliances for food preservation in people's life. With the diversification of user needs and the improvement of living standards, people have higher and higher requirements for food preservation, and the faster the cooling speed of food in the preservation process, the better the preservation effect;

[0003] In the prior art, the utility model discloses a portable phase change preservation box, which is composed of a plastic box body, an inner box arranged in the box body and a box cover, the inner box is made of a phenolic board heat preservation material, a plate-shaped phase change material is arranged at the middle position between the inner box and the plastic box body, the box cover is arranged on the box body and is connected with the box body through a hinge, a movable handle is arranged on the right side of the box body, and a roller is arranged at the bottom of the box body, the utility model can store energy through the latent heat of the phase change material during storage, can absorb or release part of the cold quantity of the refrigeration system through solid-liquid phase change, can delay the temperature rise of the internal space of the box body, can increase the storage time and slow down the temperature rise, does not need external power supply, has small volume and is convenient to carry.

[0004] However, the temperature control precision in the refrigerator is low, the temperature fluctuation is large, the food is prone to repeated freezing and thawing in the freezing process, and it is inconvenient to monitor the temperature, if the box door is not completely closed, the refrigerated food will be quickly thawed, further affecting the quality of the food.

[0005] Therefore, the portable phase change refrigeration box and wireless monitoring system are proposed to solve the problems in the prior art, the temperature in the refrigeration cavity can be monitored in real time, the temperature monitoring value can be fed back to the mobile terminal, the state of the refrigeration box and the refrigeration goods can be conveniently understood, the preservation effect of the refrigerated food is improved, and the quality of the refrigerated food is ensured. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a portable phase change refrigeration box and wireless monitoring system to solve the problems of low temperature control precision, large temperature fluctuation in the refrigerator, repeated freezing and thawing of food in the freezing process, inconvenient temperature monitoring, quick thawing of refrigerated food if the box door is not completely closed, and further influence on food quality.

[0007] To achieve the above object, the utility model adopts the following technical scheme:

[0008] A portable phase change cold storage box, comprising a cold storage box body, the inner wall and the bottom of the cold storage box body are provided with a phase change layer, the inner cavity of the cold storage box body is provided with an opening and closing mechanism, the opening and closing mechanism is provided with a sealing cover, the bottom of the inner cavity of the cold storage box body is provided with a phase change material net bag for cold storage of objects, and the phase change material net bag is filled with a plurality of groups of metal phase change cells.

[0009] Preferably, one side of the cold storage box body is provided with a temperature display, the upper side of the inner wall of the cold storage box body is provided with a limiting frame, and the lower surface of the sealing cover is provided with a sealing gasket in contact with the limiting frame.

[0010] Preferably, a circulating fan is arranged in the bottom cavity of the cold storage box body, the air outlet end of the circulating fan is communicated with the inner cavity of the cold storage box body, and a circulating air duct for circulating cold air is arranged in the cold storage box body.

[0011] Preferably, the opening and closing mechanism comprises two mounting plates fixedly connected to the inner wall of the cold storage box body on both sides and two groups of reversible turnover plate pieces, the opposite sides of the two groups of mounting plates are each provided with a guide groove, the opposite sides of the two groups of mounting plates are rotatably connected with a driving shaft, one end of the driving shaft is rotatably connected with a connecting rod, one end of each of the two groups of connecting rods is rotatably connected with a synchronous shaft, the two ends of the synchronous shaft are respectively slidably connected in the guide grooves, the lower ends of the two groups of turnover plate pieces are rotatably connected with the two ends of the synchronous shaft, and the upper ends of the two groups of turnover plate pieces are fixedly connected to the lower surface of the sealing cover.

[0012] Preferably, the middle parts of the opposite sides of the two groups of turnover plate pieces are each fixedly connected with a sliding shaft slidably connected in the guide groove, the guide grooves are Y-shaped, the two sides adjacent to the temperature display of the cold storage box body are each provided with a portable pull handle, the two sides of the inner cavity of the cold storage box body are each provided with a protective plate, and the opposite sides of the two groups of protective plates are each provided with a special-shaped groove for sliding of the synchronous shaft.

[0013] A wireless monitoring system installed in the above-described portable phase change cold storage box, further comprising a remote monitoring system;

[0014] The remote monitoring system comprises a wireless temperature acquisition module, an alarm analysis module and a power supply module;

[0015] The wireless temperature acquisition module comprises a first temperature sensor, a second temperature sensor, a third temperature sensor and a microprocessor, the microprocessor is electrically connected with the first temperature sensor, the second temperature sensor and the third temperature sensor, and the microprocessor is electrically connected with a wireless radio frequency chip;

[0016] The alarm analysis module comprises an opening and closing detection unit for detecting opening and closing of the sealing cover, a timing unit and a mobile terminal warning unit.

[0017] The power supply module comprises a rechargeable battery for supplying power to the wireless acquisition module and the alarm analysis module.

[0018] Preferably, the first temperature sensor is used for monitoring the overall temperature of the refrigeration environment.

[0019] The second temperature sensor is used for monitoring the temperature of the phase change material.

[0020] The third temperature sensor is used for monitoring the temperature of the circulating air outlet.

[0021] The wireless radio frequency chip is used for sending the processed temperature data wirelessly.

[0022] Preferably, the opening and closing detection unit comprises a sensor with an embedded optical fiber and a reading device, the reading device is electrically connected with the sensor with the embedded optical fiber, the opening and closing state of the sealing cover is determined and recorded in real time by reading the light attenuation value of the optical fiber in the sensor and comparing it with the predefined light attenuation value, and the timing unit comprises a timer for monitoring the opening time of the sealing cover.

[0023] Preferably, the mobile terminal warning unit comprises a warning device for warning that the sealing cover is not closed after being opened, the warning device is electrically connected with the timer, and the mobile terminal warning unit is connected with a mobile terminal.

[0024] Preferably, the microprocessor detects the temperature change interval of the first temperature sensor, the timer is used for controlling the warning device to sound when the temperature change difference in the temperature monitoring interval does not exceed the set pre-prepared range and the sealing cover is closed after being opened, the warning device emits intermittent alarm sound when the monitoring range of the first temperature sensor changes when the sealing cover is not opened, and the warning device emits urgent alarm sound when the monitoring temperature range of the first temperature sensor exceeds the set pre-prepared range.

[0025] Compared with the prior art, the portable phase change refrigeration box and the wireless monitoring system thereof have the following advantages:

[0026] 1、The wireless temperature acquisition module is designed, the first temperature sensor, the second temperature sensor, the third temperature sensor and the wireless radio frequency chip are matched, the first temperature sensor, the second temperature sensor and the third temperature sensor can monitor the temperature change in the refrigeration box body in real time, and the compressor is started to refrigerate according to the temperature change, and the wireless radio frequency chip is used to transmit data to the display software of the mobile terminal in a wireless form, so that the user can monitor the temperature change in the refrigeration box in real time, thereby the temperature interval can be adjusted according to different storage foods, and the storage effect of the foods is improved.

[0027] 2, the utility model discloses the cooperation between cold storage box body, phase change layer, circulating fan and phase change material net bag, the temperature in the cold box body can be cooled down quickly through phase change layer, realizes the quick conduction of temperature, and under the action of circulating fan, the temperature in the cold storage box body is conveniently quick frozen, and sealing washer improves the sealing property, guarantees the refrigeration effect of cold storage box body, guarantees the quality of food;

[0028] 3, the utility model discloses the cooperation between cold storage box body, portable handle and opening and closing mechanism, whole convenient to carry, through the rotation of drive shaft rod makes connecting rod drive synchronous shaft movement, in order to make synchronous shaft overturn with sliding shaft as the pivot under the limiting effect of guide groove, convenient for the overturn of sealing cover, convenient for the quick opening and closing of sealing cover, improve the convenience of using. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is cold storage box body structure schematic view of the utility model;

[0030] Figure 2 It is phase change layer structure schematic view of the utility model;

[0031] Figure 3 It is sealing cover structure schematic view of the utility model;

[0032] Figure 4 It is wireless monitoring system block diagram of the utility model;

[0033] Figure 5 It is temperature change monitoring flow chart block diagram of the utility model.

[0034] In the drawing: 1, cold storage box body;2, temperature display;3, portable pull handle;4, sealing cover;5, opening and closing mechanism;51, mounting plate;52, guide groove;53, drive shaft rod;54, connecting rod;55, synchronous shaft;56, overturning plate part;57, sliding shaft;6, circulating fan;7, first temperature sensor;8, second temperature sensor;9, third temperature sensor;10, limiting frame;11, sealing washer;12, protection plate;13, rechargeable battery;14, microprocessor;15, wireless radio frequency chip;16, phase change layer;17, phase change material net bag. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. The specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0036] The utility model provides a kind of portable phase change cold storage box as shown in Figures 1-5 The utility model provides a kind of portable phase change cold storage box as shown in

[0037] The utility model provides a kind of portable phase change cold storage box as shown in

[0038] The utility model provides a kind of portable phase change cold storage box as shown in

[0039] The utility model provides a kind of portable phase change cold storage box as shown in

[0040] The middle part of the opposite side of the two groups of turnover plates 56 is fixedly connected with a sliding shaft 57 slidably connected in the guide groove 52, the guide groove 52 is Y-shaped, portable pull handles 3 are arranged on the two sides adjacent to the temperature display 2 of the refrigeration box body 1, the two sides of the inner cavity of the refrigeration box body 1 are provided with protective plates 12, the opposite sides of the two groups of protective plates 12 are provided with special-shaped grooves for sliding of the synchronous shaft 55, the special-shaped grooves provide a stable sliding path for the synchronous shaft 55, and the stability of the refrigeration box body 1 is improved.

[0041] A wireless monitoring system is installed in the portable phase change refrigeration box described above, and further comprises a remote monitoring system.

[0042] The remote monitoring system comprises a wireless temperature acquisition module, an alarm analysis module and a power supply module.

[0043] The wireless temperature acquisition module comprises a first temperature sensor 7, a second temperature sensor 8, a third temperature sensor 9 and a microprocessor 14, the microprocessor 14 is electrically connected with the first temperature sensor 7, the second temperature sensor 8 and the third temperature sensor 9 respectively, and the microprocessor 14 is electrically connected with a wireless radio frequency chip 15.

[0044] The alarm analysis module comprises an opening and closing detection unit for detecting the opening and closing of the sealing cover 4, a timing unit and a mobile terminal warning unit.

[0045] The power supply module comprises a rechargeable battery 13 for supplying power to the wireless acquisition module and the alarm analysis module.

[0046] The first temperature sensor 7 is used for monitoring the overall temperature of the refrigeration environment, which is convenient for monitoring the temperature in the refrigeration box body 1 after the sealing cover 4 is opened and closed.

[0047] The second temperature sensor 8 is used for monitoring the temperature of the phase change material, which is convenient for monitoring the temperature of the phase change layer 16 in real time.

[0048] The third temperature sensor 9 is used for monitoring the temperature of the circulating air port, which is convenient for monitoring the temperature when the refrigeration box body 1 is rapidly cooled.

[0049] The wireless radio frequency chip 15 is used for sending the processed temperature data through a wireless way, which is convenient for displaying the detected temperature data through a mobile terminal by using the wireless radio frequency chip 15, and is convenient for monitoring the temperature in real time.

[0050] The opening and closing detection unit comprises a sensor with an embedded optical fiber and a reading device electrically connected to the sensor with the embedded optical fiber, which determines the opening and closing state of the sealing cover 4 by comparing the light attenuation value of the optical fiber in the sensor with a predefined light attenuation value and records it in real time. The timing unit comprises a timer for monitoring the opening time of the sealing cover 4. The opening and closing state of the sealing cover 4 can be monitored in real time through the embedded optical fiber sensor and the reading device, and real-time notifications can be sent to the user through the mobile terminal warning unit. This real-time monitoring function ensures that the user can know the status of the refrigeration box at any time, so that necessary measures can be taken in time.

[0051] The mobile terminal warning unit comprises a warning device for warning when the sealing cover 4 is opened and not closed in time. The warning device is electrically connected to the timer, and the mobile terminal warning unit is connected to a mobile terminal. When the sealing cover 4 is opened and not closed in time, the warning device will sound an alarm to remind the user to pay attention, which helps to prevent unauthorized access or accidental opening, thereby protecting the safety of the internal items.

[0052] The microprocessor 14 detects the temperature change interval of the first temperature sensor 7. When the change of the temperature monitoring interval does not exceed the set range and the preset time is reached, and the sealing cover 4 is still in the open state, the timer sends a signal to the microprocessor 14 to control the warning device to sound. When the sealing cover 4 is not opened, the monitoring range of the first temperature sensor 7 changes, and the warning device sounds an intermittent alarm. When the monitoring temperature range of the first temperature sensor 7 exceeds the set pre-set range, the warning device sounds a sharp alarm. The use of the wireless monitoring system is very simple, and the user can realize remote monitoring and operation through the mobile terminal.

[0053] The refrigeration box body 1 has two operating modes for temperature monitoring when in use, namely a reminder mode and a warning mode. The refrigeration temperature is set to T through the mobile terminal, and the specific mode operates as follows:

[0054] 1) When there is no food in the refrigeration box body 1, the sealing cover 4 is opened, the fixed time of the timer is t, the reading device reads the sensor with the optical fiber, so as to determine the opening and closing of the sealing cover 4 according to the reading information. When the sealing cover 4 is closed within t, the compressor is turned on, and the circulating fan 6 is not turned on, until the temperature T1 of the first temperature sensor 7, the temperature T2 of the second temperature sensor 8, and the temperature T3 of the third temperature sensor 9 are all equal to T, so as to ensure that the temperature in the refrigeration box body 1 is uniform.

[0055] When the sealing cover 4 is not closed within t, the timer sends a signal to the microprocessor 14, which controls the door closing reminder device to sound, thereby reminding the personnel to close the sealing cover 4. After the sealing cover 4 is closed, the above operation is repeated to balance the temperature, which is the reminder mode.

[0056] 2) When the food to be frozen and fresh-locked is put into the refrigeration box body 1, the sealing cover 4 is opened and closed, at this time the compressor is started, the specific operation steps are as follows:

[0057] S1, the food to be frozen and fresh-locked is put on the upper surface of the phase change layer 16 at the bottom of the refrigeration box body 1, the phase change material net bag 17 is covered on the upper surface of the food, so that the phase change metal material therein is attached to the food, at this time the compressor of the refrigeration box body 1 is started, and the circulating fan 6 is also started;

[0058] S2, at this time T1>T, T2>T, T3>T, after the sealing cover 4 is closed, (1) is repeated, so that T1=T2=T3=T, the rapid refrigeration of the food is realized;

[0059] 3) When the sealing cover 4 is not needed to be opened, the temperature of T1, T2 and T3 is detected by the microprocessor 14 every t, when the monitored temperature of T1 is higher or lower than the set temperature 2-5℃ within t, the microprocessor 14 transmits the signal to the mobile terminal through the wireless radio frequency chip 15, so that the alarm of the mobile terminal is intermittently sounded to remind, when the monitored temperature of T1, T2 and T3 exceeds the set range within t, the microprocessor 14 transmits the signal to the mobile terminal through the wireless radio frequency chip 15, so that the alarm of the mobile terminal is sounded to remind, which is the warning mode.

[0060] When the sealing cover 4 is opened and closed, the hand wheel (not marked in the figure) installed on one group of driving shaft rods 53 is driven, the driving shaft rod 53 drives the connecting rod 54 to change the position of the synchronous shaft 55, under the connecting action of the turnover plate member 56, the sliding shaft 57 slides in the guide groove 52, further when the sliding shaft 57 is located above the guide groove 52, the synchronous shaft 55 is turned over around the sliding shaft 57, so that the turnover plate member 56 drives the sealing cover 4 to rise and turn over at the same time, which is convenient for opening the sealing cover 4 to take and place the food, after the food is put in, the phase change material net bag 17 is covered on the food, so that the refrigeration effect of the food is improved.

[0061] Finally, it should be pointed out that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A portable phase change refrigerator, characterized in that: The refrigerator box includes a refrigerator box body (1), the inner wall and bottom of the refrigerator box body (1) are provided with a phase change layer (16), the inner cavity of the refrigerator box body (1) is provided with an opening and closing mechanism (5), a sealing cover (4) is installed on the opening and closing mechanism (5), and the bottom of the inner cavity of the refrigerator box body (1) is provided with a phase change material mesh bag (17) for refrigerating objects, and the phase change material mesh bag (17) is filled with multiple sets of metal phase change cells.

2. A portable phase change refrigerator box according to claim 1, characterized in that: A temperature display (2) is provided on one side of the refrigerator box body (1), a limit frame (10) is provided on the upper part of the inner wall of the refrigerator box body (1), and a sealing gasket (11) that abuts against the limit frame (10) is provided along the lower surface of the sealing cover (4).

3. A portable phase change refrigerator box according to claim 2, characterized in that: A circulating fan (6) is provided in the bottom cavity of the refrigerator box body (1). The air outlet of the circulating fan (6) is connected to the inner cavity of the refrigerator box body (1). A circulating air duct for cold air circulation is provided in the refrigerator box body (1).

4. A portable phase change refrigerator box according to claim 3, characterized in that: The opening and closing mechanism (5) includes mounting plates (51) fixedly connected to both sides of the inner wall of the refrigerator box body (1) and two sets of flip-up plates (56). Each of the two sets of mounting plates (51) has a guide groove (52) on one side. Each of the two sets of mounting plates (51) is rotatably connected to a drive shaft (53). One end of the drive shaft (53) is rotatably connected to a connecting rod (54). One end of each of the two sets of connecting rods (54) is rotatably connected to a synchronous shaft (55). The two ends of the synchronous shaft (55) are slidably connected in the guide groove (52). The lower ends of the two sets of flip-up plates (56) are rotatably connected to the two ends of the synchronous shaft (55). The upper ends of the two sets of flip-up plates (56) are fixedly connected to the lower surface of the sealing cover (4).

5. A portable phase change refrigerator box according to claim 4, characterized in that: Both sets of the flip plates (56) are fixedly connected to the middle of the opposite side of the sliding shaft (57) which is slidably connected in the guide groove (52). The guide groove (52) is Y-shaped. The refrigerator box body (1) and the temperature display (2) are provided with portable lifting handles (3) on both sides. The refrigerator box body (1) is provided with protective plates (12) on both sides of the inner cavity. Both sets of the protective plates (12) are provided with irregular grooves for the synchronous shaft (55) to slide on the opposite side.

6. A wireless monitoring system, installed inside a portable phase-change refrigerator box according to any one of claims 1-5, characterized in that, It also includes remote monitoring systems; The remote monitoring system includes a wireless temperature acquisition module, an alarm analysis module, and a power supply module; The wireless temperature acquisition module includes a first temperature sensor (7), a second temperature sensor (8), a third temperature sensor (9), and a microprocessor (14). The microprocessor (14) is electrically connected to the first temperature sensor (7), the second temperature sensor (8), and the third temperature sensor (9), respectively. The microprocessor (14) is electrically connected to a wireless radio frequency chip (15). The alarm analysis module includes an opening and closing detection unit, a timing unit, and a mobile terminal warning unit for detecting the opening and closing of the sealing cover (4); The power supply module includes a rechargeable battery (13) for powering the wireless acquisition module and the alarm analysis module.

7. A wireless monitoring system according to claim 6, characterized in that: The first temperature sensor (7) is used to monitor the overall temperature of the refrigerated environment; The second temperature sensor (8) is used to monitor the temperature of the phase change material; The third temperature sensor (9) is used to monitor the temperature of the circulating air outlet; The wireless radio frequency chip (15) is used to transmit the processed temperature data wirelessly.

8. A wireless monitoring system according to claim 7, characterized in that: The opening and closing detection unit includes a sensor with built-in optical fiber and a reading device. The reading device is electrically connected to the sensor with built-in optical fiber. By reading the optical attenuation value of the optical fiber in the sensor and comparing it with a predefined optical attenuation value, the opening and closing state of the sealing cover (4) is determined and recorded in real time. The timing unit includes a timer for monitoring the opening time of the sealing cover (4).

9. A wireless monitoring system according to claim 8, characterized in that: The mobile terminal warning unit includes a warning device for warning when the sealing cover (4) is not closed after being opened. The warning device is electrically connected to a timer. The mobile terminal warning unit is connected to a mobile terminal.

10. A wireless monitoring system according to claim 9, characterized in that: The microprocessor (14) detects the temperature change range of the first temperature sensor (7). The timer is used to monitor the temperature range. When the difference in temperature changes does not exceed the preset range and the sealing cover (4) is closed after being opened, the microprocessor (14) controls the alarm to sound. When the sealing cover (4) is not opened, the monitoring range of the first temperature sensor (7) changes and the alarm sounds intermittently. When the temperature range monitored by the first temperature sensor (7) exceeds the preset range, the alarm sounds rapidly.

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