Refrigeration house and screen demisting system thereof

Abstract

The utility model discloses a refrigeration house and a screen demisting system thereof, which comprises a shell embedded into a wall body in the refrigeration house, and a screen, a blocking device and an air flow control device are arranged in the shell; the screen and the wall body are arranged at an interval, and a blocking device and an air flow control device are sequentially arranged above the screen; wherein the air flow control device is used for conveying air flow to the screen, and the blocking device is used for blocking the air flow from flowing to the screen. When the screen meets the fogging condition, the air flow control device extracts air in the refrigeration house and forms cold air flow to be conveyed to the screen, or the air flow control device extracts the air in the refrigeration house and heats the air to form hot air flow to be conveyed to the screen, and meanwhile the blocking device enables the air flow to only flow to the front face of the screen. Therefore, the temperature in the screen and the temperature in the refrigeration house are kept consistent or close, the screen is prevented from generating mist, even condensation and frosting, and various conditions such as screen damage or panel mistaken touch failure are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration, in particular to a cold storage and a screen demisting system thereof. Background Art

[0002] In cold or humid environments, the surface of electronic screens is prone to fogging, affecting screen visibility and user experience. Common cold storage temperatures are generally below 0°C, causing display screens in cold storage to operate in a low-temperature, high-humidity environment. This can lead to fogging or even frost on the screens, and the heating components inside the screens can also accumulate water stains when exposed to low-temperature, high-humidity air. Specifically:

[0003] 1. Screen fogging: During the operation of the cold storage unit, the internal unit will defrost. At this time, the cold storage unit switches the cooling state to the heating state through the four-way valve, causing the heat dissipated by the cold storage unit to form a relatively warm and humid environment. At this time, since the screen temperature is lower than or equal to the dew point temperature, the water vapor in the humid air will condense into water droplets on the screen, thereby forming fog on the inside of the screen.

[0004] 2. Screen condensation: When water droplets gradually gather and increase, condensation will occur, gathering on the screen or dripping.

[0005] 3. Screen frost: When the cold storage unit completes defrosting, it will quickly switch back to the cooling state through the four-way valve. At this time, the water droplets on the screen will not have time to drip, and will be condensed into frost by the cold air and remain on the screen surface.

[0006] Therefore, the screen in the cold storage will be damaged or the panel will malfunction due to accidental touch under the above circumstances. To prevent the screen from being damaged, existing defogger methods mainly include manual wiping and using heating elements for defogger. However, these methods have problems such as inconvenient operation, high energy consumption, and unsatisfactory defogger effect.

[0007] Therefore, how to provide a cold storage screen demisting system that can continuously and effectively demist is an urgent problem to be solved. Utility Model Content

[0008] The utility model provides a cold storage and a screen demisting system thereof, which are used to solve the problem in the prior art that the screen in the cold storage cannot be demisted continuously and effectively.

[0009] The technical solution of the utility model is a cold storage screen demisting system, comprising a shell embedded in the wall of the cold storage, wherein a screen, a blocking device and an air flow control device are arranged in the shell;

[0010] The screen is spaced apart from the wall, and a blocking device and an air flow control device are sequentially provided above the screen;

[0011] The wind flow control device is used to deliver air flow to the screen, and the blocking device is used to block the air flow from flowing toward the screen.

[0012] Furthermore, the wind flow control device includes a fan and a heating structure;

[0013] At least one fan is provided on the top of the shell corresponding to the front and back of the screen, and a heating structure is provided between the air outlet sides of all the fans and the screen.

[0014] Furthermore, the blocking device includes a transmission wheel, a transmission belt, a driving device and a blocking member;

[0015] At least two transmission wheels are arranged side by side in the housing between the screen and the wind flow control device, and the transmission belt is sleeved on all the transmission wheels, and at least one of the transmission wheels is connected to the output end of the driving device;

[0016] A blocking member is connected to a side of the transmission belt away from the screen, and the blocking member can block the airflow from flowing toward the front or back of the screen.

[0017] Furthermore, the blocking member includes a fixing portion, and the fixing portion is connected to a side of the transmission belt away from the screen;

[0018] A first abutting portion is provided on one side of the fixing portion close to the wall, and a second abutting portion is provided on the other side of the fixing portion away from the wall.

[0019] Furthermore, a limiting member is provided on a side of the shell away from the wall and corresponding to the second abutting portion.

[0020] Furthermore, the length of the first abutting portion is greater than the shortest distance between the wall and the transmission belt; and when the first abutting portion abuts against the wall, the first abutting portion can block the wind flow control device from delivering airflow to the back of the screen.

[0021] Furthermore, the length of the second abutting portion is greater than the shortest distance between the limiting member and the transmission belt; and when the second abutting portion abuts against the limiting member, the second abutting portion can block the wind flow control device from delivering airflow to the front of the screen.

[0022] Furthermore, a first air hole is provided on the top of the shell, and the first air hole is used to allow the air in the cold storage to pass into the shell;

[0023] A second air hole is provided at the bottom of the shell, and the second air hole is used to discharge the air in the shell into the cold storage.

[0024] Furthermore, the screen is provided with an environmental monitoring sensor, which is used to detect the temperature and humidity on the front and inside of the screen in real time.

[0025] The utility model also provides a cold storage, which includes the cold storage screen demisting system described above.

[0026] Compared with the prior art, the present invention has at least the following beneficial effects:

[0027] When the screen of the present invention meets the fogging conditions, the wind flow control device draws air from the cold storage to form a cold air flow and directly delivers it to the screen, or the wind flow control device draws air from the cold storage and heats it to form a hot air flow and then delivers it to the screen. At the same time, the blocking device will move to the left, so that the air flow flows to the front of the screen and prevents the air flow from flowing to the back of the screen, thereby ensuring that the temperature of the screen is consistent or close to that in the cold storage, thereby preventing the screen from generating fog, even condensation and frost, thereby avoiding various situations such as damage to the screen or malfunction of the panel due to accidental touch. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this invention pertains; the terms used in the specification of the application are intended only to describe specific embodiments and are not intended to limit this invention; the terms "including" and "having," as well as any variations thereof, in the specification and claims of this invention and the accompanying drawings are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the specification and claims of this invention and the accompanying drawings are used to distinguish between different objects, not to describe a specific order.

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 This is a schematic diagram of the first structure of the cold storage screen demisting system proposed by the utility model;

[0031] Figure 2 This is a second structural diagram of the cold storage screen demisting system proposed by the utility model;

[0032] Figure 3 This is a schematic diagram of the third structure of the cold storage screen demisting system proposed by the utility model;

[0033] Figure 4 This is a module block diagram of the cold storage screen demisting system proposed in this utility model.

[0034] Reference numerals:

[0035] 1. Wall;

[0036] 2. Shell;

[0037] 21. Limiting member; 22. First air hole; 23. Second air hole;

[0038] 3. Screen;

[0039] 4. Blocking device;

[0040] 41. Transmission wheel; 42. Transmission belt; 43. Driving device; 44. Blocking member;

[0041] 441, fixing portion; 442, first abutting portion; 443, second abutting portion;

[0042] 5. Air flow control device;

[0043] 51. Fan; 52. Heating structure;

[0044] 6. Environmental monitoring sensors;

[0045] 7. Control unit;

[0046] 71. Wireless communication module. DETAILED DESCRIPTION

[0047] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. Thus, a feature indicated in this specification will be used to illustrate one of the features of an embodiment of the present invention, rather than implying that each embodiment of the present invention must have the described feature. In addition, it should be noted that this specification describes many features. Although certain features can be combined together to illustrate possible system designs, these features can also be used in other combinations that are not explicitly stated. Thus, unless otherwise stated, the described combinations are not intended to be limiting.

[0048] The principle and structure of the present invention are described in detail below with reference to the accompanying drawings and embodiments.

[0049] Example 1

[0050] In cold or humid environments, the surface of electronic screens is prone to fogging, affecting screen visibility and user experience. Common cold storage temperatures are generally below 0°C, causing display screens in cold storage to operate in a low-temperature, high-humidity environment. This can lead to fogging or even frost on the screens, and the heating components inside the screens can also accumulate water stains when exposed to low-temperature, high-humidity air. Specifically:

[0051] 1. Screen fogging: During the operation of the cold storage unit, the internal unit will defrost. At this time, the cold storage unit switches the cooling state to the heating state through the four-way valve, causing the heat dissipated by the cold storage unit to form a relatively warm and humid environment. At this time, since the screen temperature is lower than or equal to the dew point temperature, the water vapor in the humid air will condense into water droplets on the screen, thereby forming fog on the inside of the screen.

[0052] 2. Screen condensation: When water droplets gradually gather and increase, condensation will occur, gathering on the screen or dripping.

[0053] 3. Screen frost: When the cold storage unit completes defrosting, it will quickly switch back to the cooling state through the four-way valve. At this time, the water droplets on the screen will not have time to drip, and will be condensed into frost by the cold air and remain on the screen surface.

[0054] Therefore, the screen in the cold storage will be damaged or the panel will malfunction due to accidental touch under the above circumstances. To prevent the screen from being damaged, existing defogger methods mainly include manual wiping and using heating elements for defogger. However, these methods have problems such as inconvenient operation, high energy consumption, and unsatisfactory defogger effect.

[0055] Therefore, refer to the attached Figure 1 The utility model provides a cold storage screen demisting system with continuous and effective demisting, comprising a shell 2 embedded in a wall 1 in the cold storage, wherein a screen 3, a blocking device 4 and an air flow control device 5 are arranged in the shell 2;

[0056] The screen 3 is spaced apart from the wall 1, and a blocking device 4 and a wind flow control device 5 are sequentially provided above the screen 3;

[0057] The wind flow control device 5 is used to deliver airflow to the screen 3 , and the blocking device 4 is used to block the airflow from flowing toward the screen 3 .

[0058] It should be noted that the cold storage screen demisting system of this embodiment also includes a control unit 7, which is electrically connected to the screen 3, the blocking device 4 and the airflow control device 5 respectively. The screen 3 is located on the side of the shell 2 away from the wall 1, and the screen 3 can directly contact the air in the cold storage. The airflow in this embodiment includes cold airflow and hot airflow, wherein the cold airflow is the airflow formed by the air directly extracted from the cold storage, and the temperature of the cold airflow is equivalent to the ambient temperature in the cold storage; the hot airflow is the airflow after the air extracted from the cold storage is heated, and the temperature of the hot airflow is greater than the ambient temperature in the cold storage.

[0059] In this way, when the screen 3 meets the fogging condition (the fogging condition is: the current temperature of the screen 3 is lower than the dew point temperature), the control unit 7 will start the blocking device 4 and the wind flow control device 5, wherein the wind flow control device 5 extracts the air in the cold storage to form a cold air flow and directly transports it to the screen 3, or the wind flow control device 5 extracts the air in the cold storage and heats it to form a hot air flow (hot air flow is equivalent to flowing hot air, the same throughout the text) and then transports it to the screen 3. At the same time, the blocking device 4 will move to the left to make the air flow flow to the front of the screen 3 and prevent the air flow from flowing to the back of the screen 3, thereby ensuring that the temperature of the screen 3 is consistent or close to that in the cold storage, thereby preventing the screen 3 from generating fog, or even condensation and frost, thereby avoiding various situations such as damage to the screen 3 or panel malfunction.

[0060] Specifically, refer to the attached Figure 2 When the cold storage is in a low temperature and high humidity environment (below 5°C and above 75% humidity), the control unit 7 controls the blocking device 4 to move to the left, so that the air flow control device 5 extracts air from the cold storage and the resulting cold air flow can only flow to the front of the screen 3, ensuring that the temperature of the screen 3 is consistent or close to that in the cold storage, thereby preventing the screen 3 from generating fog, or even condensation and frost.

[0061] When the cold storage is in a low temperature and high humidity environment (below 5°C, humidity above 75%), and a special heat source appears in the cold storage, causing the ambient temperature in the cold storage to rise rapidly from a low temperature (such as defrosting of the cold storage unit), the control unit 7 controls the blocking device 4 to move to the left, so that the air flow control device 5 extracts air in the cold storage and heats it to form a hot air flow that can only flow to the front of the screen 3, thereby slowly increasing the temperature of the screen 3, and then ensuring that the screen 3 is consistent with or close to the temperature in the cold storage, thereby preventing the screen 3 from generating fog, or even condensation and frost.

[0062] It should be noted that in this embodiment, "left" refers to the side facing the wall 1, and "right" refers to the side away from the wall 1, and the same shall apply throughout the text. The front of the screen 3 in this embodiment refers to the side of the screen 3 away from the wall 1, and the back of the screen 3 in this embodiment refers to the side of the screen 3 closer to the wall 1, and the same shall apply throughout the text.

[0063] In order to ensure that the air flow control device 5 can heat the air extracted from the cold storage and can also deliver hot air or cold air to the screen 3, refer to the attached Figure 2 The present invention proposes a structure of a wind flow control device 5:

[0064] The wind flow control device 5 includes a fan 51 and a heating structure 52;

[0065] A fan 51 is provided on the top of the housing 2 corresponding to the front and back sides of the screen 3 , and a heating structure 52 is provided between the air outlet sides of all the fans 51 and the screen 3 .

[0066] It should be noted that the control unit 7 is electrically connected to the fan 51 and the heating structure 52 respectively.

[0067] Thus, when the screen 3 meets the fogging condition, there are two situations:

[0068] 1. When the cold storage is in a low temperature and high humidity environment (below 5°C and above 75% humidity), the control unit 7 controls the blocking device 4 to move to the left so that the airflow delivered by the fan 51 can only flow to the front of the screen 3. At the same time, the control unit 7 will start the fan 51 and turn off the heating structure 52, so that the fan 51 extracts air in the cold storage and forms a cold airflow blowing to the front of the screen 3, ensuring that the temperature of the screen 3 is consistent or close to that in the cold storage, thereby preventing the screen 3 from generating fog, even condensation and frost, thereby avoiding various situations such as damage to the screen 3 or malfunction of the panel due to accidental touch, and can also continuously dissipate heat to the screen 3.

[0069] 2. When the cold storage is in a low temperature and high humidity environment (below 5°C, humidity above 75%), if a special heat source appears in the cold storage, causing the ambient temperature in the cold storage to rise rapidly from a low temperature (such as defrosting of the cold storage unit), the control unit 7 controls the blocking device 4 to move to the left, so that the airflow delivered by the fan 51 can only flow to the front of the screen 3. At the same time, the control unit 7 will start the fan 51 and the heating structure 52, so that the heating structure 52 will heat the air extracted from the cold storage by the fan 51 and form a hot air flow to the front of the screen 3, thereby slowly raising the temperature of the screen 3, thereby ensuring that the screen 3 is consistent with or close to the temperature in the cold storage, thereby preventing the screen 3 from generating fog, even condensation and frost, thereby avoiding various situations such as damage to the screen 3 or panel malfunction.

[0070] In order to ensure that the blocking device 4 can block the air flow delivered by the fan 51 from flowing to the screen 3, refer to the attached Figure 1-4 , the utility model proposes a structure of a blocking device 4:

[0071] The blocking device 4 includes a transmission wheel 41, a transmission belt 42, a driving device 43 and a blocking member 44;

[0072] The housing 2 between the screen 3 and the air flow control device 5 is provided with two transmission wheels 41 side by side, and the transmission belt 42 is sleeved on all the transmission wheels 41, and any one of the transmission wheels 41 is connected to the output end of the driving device 43;

[0073] A blocking member 44 is connected to a side of the transmission belt 42 away from the screen 3 , and the blocking member 44 can block the airflow from flowing toward the front or back of the screen 3 .

[0074] It should be noted that the transmission wheels 41 are connected to the shell 2, and the side of the transmission belt 42 away from the screen 3 is the top of the transmission belt 42; the control unit 7 is electrically connected to the driving device 43, and the driving device 43 in this embodiment is preferably a motor.

[0075] Like this, blocking device 4 has the following three states:

[0076] First, refer to the attached Figure 1 When the blocking device 4 is in a normal state, the blocking member 44 is located in the middle of the transmission belt 42. At this time, the air in the cold storage can flow out of the shell 2 from the front of the screen 3, the space between the blocking member 44 and the heating structure 52, the back of the screen 3, and finally; and the airflow delivered by the fan 51 can flow to the front and back of the screen 3 respectively.

[0077] Second, refer to the attached Figure 3 When the blocking device 4 is in the left open state, the driving device 43 can drive the blocking member 44 to move right through the transmission belt 42, so that the blocking member 44 is located on the right side of the transmission belt 42, that is, at this time, the air in the cold storage cannot flow from the front of the screen 3 to the space between the blocking member 44 and the heating structure 52; and the airflow delivered by the fan 51 can only flow to the back of the screen 3.

[0078] Second, refer to the attached Figure 2 When the blocking device 4 is in the right-side open state, the driving device 43 can drive the blocking member 44 to move to the left through the transmission belt 42, so that the blocking member 44 is located on the left side of the transmission belt 42, that is, at this time, the air in the cold storage cannot flow from the space between the blocking member 44 and the heating structure 52 to the back of the screen 3; and the airflow delivered by the fan 51 can only flow to the front of the screen 3.

[0079] In order to ensure that the blocking member 44 does not fall off the transmission belt 42 when the driving device 43 drives the blocking member 44 to move rightward through the transmission belt 42, or the blocking member 44 does not move from the top of the transmission belt 42 to the bottom or side, refer to the attached Figure 1 A limiting member 21 is provided on a side of the housing 2 away from the wall 1 and corresponding to the second abutting portion 443 .

[0080] In order to ensure that the blocking member 44 can better block the air flow delivered by the fan 51 from flowing to the front and back of the screen 3, refer to the attached Figure 1 , the utility model proposes a structure of a blocking member 44:

[0081] The blocking member 44 includes a fixing portion 441 , and the fixing portion 441 is connected to a side of the transmission belt 42 away from the screen 3 ;

[0082] A first abutting portion 442 is provided on one side of the fixing portion 441 close to the wall 1 , and a second abutting portion 443 is provided on the other side of the fixing portion 441 away from the wall 1 .

[0083] It should be noted that the first abutting portion 442 and the second abutting portion 443 are located at the same horizontal position on both sides of the fixing portion 441 , or the first abutting portion 442 and the second abutting portion 443 are staggered and arranged on both sides of the fixing portion 441 .

[0084] In order to prevent the blocking member 44 from falling from the top of the transmission belt 42 when the transmission belt 42 drives the blocking member 44 to move along the side close to the wall 1, or the blocking member 44 will not be transmitted from the top of the transmission belt 42 to the bottom or side, refer to the attached Figure 1 , the length of the first abutting portion 442 is greater than the shortest distance between the wall 1 and the transmission belt 42; and when the end of the first abutting portion 442 abuts against the wall 1, the first abutting portion 442 can block the wind flow control device 5 from transporting airflow to the back of the screen 3.

[0085] In order to prevent the blocking member 44 from falling from the top of the transmission belt 42 when the transmission belt 42 drives the blocking member 44 to move along the other side away from the wall 1, or the blocking member 44 will not be transmitted from the top of the transmission belt 42 to the bottom or side, refer to the attached Figure 1 , the length of the second abutment portion 443 is greater than the shortest distance between the limiting member 21 and the transmission belt 42; and when the end of the second abutment portion 443 abuts against the limiting member 21, the second abutment portion 443 can block the wind flow control device 5 from delivering airflow to the front of the screen 3.

[0086] Among them, refer to the attached Figure 1 , a first air hole 22 is provided on the top of the shell 2, and the first air hole 22 is used to allow the air in the cold storage to pass into the shell 2;

[0087] The bottom of the shell 2 is provided with a second air hole 23, and the second air hole 23 is used to discharge the air in the shell 2 into the cold storage.

[0088] In this way, when the control unit 7 detects that the screen 3 meets the fogging conditions, the utility model will effectively guide the air inside the shell 2 and the cold storage through the first air hole 22 and the second air hole 23 to achieve air microcirculation through the combined design of the fan 51 and the heating structure 52, and adjust the air flow on the front and back of the screen 3 in real time to ensure that the temperature of the screen 3 is consistent or close to that in the cold storage, thereby preventing the screen 3 from generating fog, or even condensation and frost, thereby avoiding various situations such as damage to the screen 3 or malfunction of the panel due to accidental touch.

[0089] It should be noted that the temperature outside the housing 2 in this embodiment is equivalent to the temperature inside the cold storage.

[0090] In order to better monitor the temperature and humidity of the front and interior of the screen 3, so that the control unit 7 can better adjust the operating state of the blocking device 4 and the wind flow control device 5 according to the temperature and humidity of the screen 3, so as to continuously and effectively defog the screen 3, refer to the attached Figure 1 and 4 The screen 3 is provided with an environmental monitoring sensor 6, which is used to detect the temperature and humidity on the front and inside of the screen 3 in real time.

[0091] It should be noted that the control unit 7 is electrically connected to the environmental monitoring sensor 6, and the control unit 7 can intelligently determine whether to start the fan 51 and the heating structure 52 by analyzing the temperature and humidity data uploaded by the environmental monitoring sensor 6, to adjust the speed of the fan 51 and realize the switching between cold and hot air, to ensure moderate air flow in the shell 2 while maintaining low energy consumption.

[0092] There is also a temperature and humidity sensor (not shown, the same applies throughout) in the cold storage, which is electrically connected to the control unit 7. The temperature and humidity sensor is used to detect the ambient temperature and humidity in the cold storage in real time and transmit the detected temperature and humidity data to the control unit 7.

[0093] The dew point temperature of the screen 3 can be calculated by the ambient temperature in the cold storage and the relative humidity of the environment in which the screen 3 is located. The specific calculation formula of the dew point temperature has been made public by common knowledge and will not be elaborated here.

[0094] Among them, the cold storage screen defog system is also equipped with a battery storage system (not shown, the same throughout the text), which is powered by both the battery storage system and connection to the power grid during daily operation.

[0095] At the same time, users can also manually control the air outlet mode, wind speed and temperature level of the cold storage screen defog system on screen 3 according to the current actual usage environment to ensure comfort and experience in actual application.

[0096] Refer to the attached Figure 4At the same time, the control unit 7 is also provided with a wireless communication module 71. The user can wirelessly connect to the wireless communication module 71 through a dedicated APP on a mobile device. Then the user can customize the anti-fog parameters (including but not limited to wind speed, hot and cold degrees and dew point temperature) on the interface of the dedicated APP to achieve personalized anti-fog management.

[0097] The usage method of the cold storage screen defogging system proposed by this utility model:

[0098] The cold storage screen defogging system is powered on and running normally. Figure 1 If the cold storage is in the grain storage or fruit storage mode, the temperature and humidity sensor detects that the ambient temperature of the cold storage is in a medium temperature environment (5℃~25℃). At this time, the fan 51, the heating structure 52 and the driving device 43 are all turned off, and the blocking member 44 is located in the middle of the transmission belt 42. Then, the air in the cold storage can flow out of the front of the screen 3, the space between the blocking member 44 and the heating structure 52, the back of the screen 3, and finally out of the shell 2, thereby realizing normal air circulation inside the cold storage and inside the shell 2.

[0099] Refer to the attached Figure 3 If the cold storage is in a scenario such as summer cargo handling or high-temperature disinfection, when the temperature and humidity sensor detects that the ambient temperature of the cold storage is in a high temperature environment (above 25°C), the control unit 7 starts the driving device 43 to make the driving device 43 drive the blocking member 44 to move right through the transmission belt 42 until the second abutting portion 443 abuts against the limit member 21. The control unit 7 then turns off the driving device 43, which can prevent the air in the cold storage from entering the back of the screen 3 from the front of the screen 3; and at the same time, the control unit 7 will start the fan 51 and turn off the heating structure 52. The fan 51 draws cold air in the cold storage through the first air hole 22 and forms a cold air flow blowing to the back of the screen 3, so as to realize wind circulation on the back of the screen 3 and realize continuous heat dissipation of the screen 3.

[0100] Refer to the attached Figure 2If the cold storage is in the mode of freezing meat or seafood, when the temperature and humidity sensor detects that the ambient temperature of the cold storage is in a low temperature and high humidity environment (below 5°C, humidity above 75%), the temperature of the screen 3 itself is lower than the dew point temperature, and the control unit 7 starts the driving device 43, so that the driving device 43 drives the blocking member 44 to move left through the transmission belt 42 until the first abutting portion 442 abuts against the wall 1, and the control unit 7 turns off the driving device 43, thereby ensuring the airtightness and waterproofness of the heat dissipation area on the back of the screen 3; at the same time, the control unit 7 will start the fan 51 and turn off the heating structure 52, so that the fan 51 will draw cold air in the cold storage through the first air hole 22 and form a cold air flow to blow towards the front of the screen 3, ensuring that the screen 3 is consistent with or close to the temperature in the cold storage, thereby preventing the screen 3 from generating fog, even condensation and frost, thereby avoiding various situations such as damage to the screen 3 or panel malfunction, and can also continuously dissipate heat for the screen 3.

[0101] When the cold storage is in a low temperature and high humidity environment (below 5°C and above 75% humidity), if a special heat source appears in the cold storage, causing the ambient temperature in the cold storage to rise rapidly from a low temperature (such as defrosting of the cold storage unit), at this time the temperature of the screen 3 itself is lower than the dew point temperature, the control unit 7 starts the driving device 43, so that the driving device 43 drives the blocking member 44 to move left through the transmission belt 42 until the first abutting portion 442 abuts against the wall 1, and the control unit 7 turns off the driving device 43, thereby ensuring the airtightness and waterproofness of the heat dissipation area on the back of the screen 3; at the same time, the control unit 7 continues to start the fan 51 and synchronously starts the heating structure 52. The heating structure 52 will heat the air extracted from the cold storage by the fan 51 and form a hot air flow to the front of the screen 3, thereby slowly raising the temperature of the screen 3, ensuring that the screen 3 is consistent with or close to the temperature in the cold storage, thereby preventing the screen 3 from generating fog, even condensation and frost, thereby avoiding various situations such as damage to the screen 3 or panel malfunction.

[0102] And when the unit in the cold storage is defrosted, the unit will quickly switch back to the cooling state through the four-way valve, causing the ambient temperature in the cold storage to gradually drop until it stabilizes. The control unit 7 will then turn off the heating structure 52 and continue to start the fan 51 to maintain air circulation between the cold storage and the front of the screen 3, even if the fan 51 draws cold air in the cold storage through the first air hole 22 and forms a cold air flow to blow to the front of the screen 3, thereby ensuring that the ambient temperature in the cold storage is consistent with the temperature of the front of the screen 3, thereby preventing the screen 3 from generating fog, even condensation and frost, thereby avoiding various situations such as damage to the screen 3 or malfunction of the panel due to accidental touch; and it can also achieve temperature exchange between the front of the screen 3 and the cold storage environment, ensuring continuous heat dissipation of the screen 3.

[0103] Example 2

[0104] The utility model also provides a cold storage, which includes the cold storage screen demisting system described above.

[0105] In this way, when the cold storage is running, when the screen 3 in the cold storage screen defogging system in the cold storage meets the fogging condition (the fogging condition is: the current temperature of the screen 3 is lower than the dew point temperature, and the ambient temperature in the cold storage rises), the control unit 7 will start the blocking device 4 and the airflow control device 5, wherein the airflow control device 5 extracts the air in the cold storage and heats it, and then transports the hot air flow to the screen 3. At the same time, the blocking device 4 will move to the left, so that the hot air flow flows to the front of the screen 3, and prevents the hot air flow from flowing to the back of the screen 3, thereby ensuring that the screen 3 is consistent or close to the temperature in the cold storage, thereby preventing the screen 3 from generating fog, or even condensation and frost, thereby avoiding various situations such as damage to the screen 3 or panel failure by mistake.

[0106] Among them, the utility model proposes a control method for cold storage:

[0107] Refer to the attached Figure 1 When the cold storage is in the grain storage or fruit storage mode, the temperature and humidity sensor detects that the ambient temperature of the cold storage is in a medium temperature environment (5℃~25℃). At this time, the fan 51, the heating structure 52 and the driving device 43 are all turned off, and the blocking member 44 is located in the middle of the transmission belt 42. Then, the air in the cold storage can flow out of the front of the screen 3, the space between the blocking member 44 and the heating structure 52, the back of the screen 3, and finally out of the shell 2, thereby realizing normal air circulation inside the cold storage and inside the shell 2.

[0108] Refer to the attached Figure 3 If the cold storage is in a scenario such as summer cargo handling or high-temperature disinfection, when the temperature and humidity sensor detects that the ambient temperature of the cold storage is in a high temperature environment (above 25°C), the control unit 7 starts the driving device 43 to make the driving device 43 drive the blocking member 44 to move right through the transmission belt 42 until the second abutting portion 443 abuts against the limit member 21. The control unit 7 then turns off the driving device 43, which can prevent the air in the cold storage from entering the back of the screen 3 from the front of the screen 3; and at the same time, the control unit 7 will start the fan 51 and turn off the heating structure 52. The fan 51 draws cold air in the cold storage through the first air hole 22 and forms a cold air flow blowing to the back of the screen 3, so as to realize wind circulation on the back of the screen 3 and realize continuous heat dissipation of the screen 3.

[0109] Refer to the attached Figure 2If the cold storage is in the mode of freezing meat or seafood, when the temperature and humidity sensor detects that the ambient temperature of the cold storage is in a low temperature and high humidity environment (below 5°C, humidity above 75%), the temperature of the screen 3 itself is lower than the dew point temperature, and the control unit 7 starts the driving device 43, so that the driving device 43 drives the blocking member 44 to move left through the transmission belt 42 until the first abutting portion 442 abuts against the wall 1, and the control unit 7 turns off the driving device 43, thereby ensuring the airtightness and waterproofness of the heat dissipation area on the back of the screen 3; at the same time, the control unit 7 will start the fan 51 and turn off the heating structure 52, so that the fan 51 will draw cold air in the cold storage through the first air hole 22 and form a cold air flow to blow towards the front of the screen 3, ensuring that the screen 3 is consistent with or close to the temperature in the cold storage, thereby preventing the screen 3 from generating fog, even condensation and frost, thereby avoiding various situations such as damage to the screen 3 or panel malfunction, and can also continuously dissipate heat for the screen 3.

[0110] When the cold storage is in a low temperature and high humidity environment (below 5°C and above 75% humidity), if a special heat source appears in the cold storage, causing the ambient temperature in the cold storage to rise rapidly from a low temperature (such as defrosting of the cold storage unit), at this time the temperature of the screen 3 itself is lower than the dew point temperature, the control unit 7 starts the driving device 43, so that the driving device 43 drives the blocking member 44 to move left through the transmission belt 42 until the first abutting portion 442 abuts against the wall 1, and the control unit 7 turns off the driving device 43, thereby ensuring the airtightness and waterproofness of the heat dissipation area on the back of the screen 3; at the same time, the control unit 7 continues to start the fan 51 and synchronously starts the heating structure 52. The heating structure 52 will heat the air extracted from the cold storage by the fan 51 and form a hot air flow to the front of the screen 3, thereby slowly raising the temperature of the screen 3, ensuring that the screen 3 is consistent with or close to the temperature in the cold storage, thereby preventing the screen 3 from generating fog, even condensation and frost, thereby avoiding various situations such as damage to the screen 3 or panel malfunction.

[0111] And when the unit in the cold storage is defrosted, the unit will quickly switch back to the cooling state through the four-way valve, causing the ambient temperature in the cold storage to gradually drop until it stabilizes. The control unit 7 will then turn off the heating structure 52 and continue to start the fan 51 to maintain air circulation between the cold storage and the front of the screen 3, even if the fan 51 draws cold air in the cold storage through the first air hole 22 and forms a cold air flow to blow to the front of the screen 3, thereby ensuring that the ambient temperature in the cold storage is consistent with the temperature of the front of the screen 3, thereby preventing the screen 3 from generating fog, even condensation and frost, thereby avoiding various situations such as damage to the screen 3 or malfunction of the panel due to accidental touch; and it can also achieve temperature exchange between the front of the screen 3 and the cold storage environment, ensuring continuous heat dissipation of the screen 3.

[0112] Obviously, the embodiments described above are only some of the embodiments of the present invention, rather than all of the embodiments. The preferred embodiments of the present invention are given in the accompanying drawings, but they do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned specific embodiments, or to make equivalent replacements for some of the technical features therein. Any equivalent structure made using the contents of the present invention specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of protection of the present invention patent.

Claims

1. A cold storage screen defogging system, characterized in that: It comprises a shell (2) embedded in a wall (1) in a cold storage, wherein a screen (3), a blocking device (4) and an air flow control device (5) are provided in the shell (2); The screen (3) is spaced apart from the wall (1), and a blocking device (4) and an airflow control device (5) are sequentially provided above the screen (3); The wind flow control device (5) is used to deliver airflow to the screen (3), and the blocking device (4) is used to block the airflow from flowing toward the screen (3).

2. The cold storage screen defogging system according to claim 1 is characterized in that: The wind flow control device (5) comprises a fan (51) and a heating structure (52); At least one fan (51) is provided on the top of the housing (2) corresponding to the front and back sides of the screen (3), and a heating structure (52) is provided between the air outlet sides of all the fans (51) and the screen (3).

3. The cold storage screen defogging system according to claim 1 is characterized in that: The blocking device (4) comprises a transmission wheel (41), a transmission belt (42), a driving device (43) and a blocking member (44); The housing (2) between the screen (3) and the wind flow control device (5) is provided with at least two transmission wheels (41) in parallel, and the transmission belt (42) is sleeved on all the transmission wheels (41), and at least one of the transmission wheels (41) is connected to the output end of the driving device (43); A blocking member (44) is connected to the side of the transmission belt (42) away from the screen (3), and the blocking member (44) can block the airflow from flowing toward the front or back of the screen (3).

4. The cold storage screen defogging system according to claim 3 is characterized in that: The blocking member (44) includes a fixing portion (441), and the fixing portion (441) is connected to a side of the transmission belt (42) away from the screen (3); A first abutting portion (442) is provided on one side of the fixing portion (441) close to the wall (1), and a second abutting portion (443) is provided on the other side of the fixing portion (441) away from the wall (1).

5. The cold storage screen defogging system according to claim 4 is characterized in that: A limiting member (21) is provided on a side of the housing (2) away from the wall (1) and corresponding to the second abutting portion (443).

6. The cold storage screen demisting system according to claim 4 is characterized in that: The length of the first abutting portion (442) is greater than the shortest distance between the wall (1) and the transmission belt (42); and when the first abutting portion (442) abuts against the wall (1), the first abutting portion (442) can block the airflow control device (5) from delivering airflow to the back of the screen (3).

7. The cold storage screen defogging system according to claim 5 is characterized in that: The length of the second abutting portion (443) is greater than the shortest distance between the limiting member (21) and the transmission belt (42); and when the second abutting portion (443) abuts against the limiting member (21), the second abutting portion (443) can block the airflow control device (5) from delivering airflow to the front of the screen (3).

8. The cold storage screen demisting system according to claim 1 is characterized in that: A first air hole (22) is provided on the top of the shell (2), and the first air hole (22) is used to allow the air in the cold storage to flow into the shell (2); A second air hole (23) is provided at the bottom of the shell (2), and the second air hole (23) is used to discharge the air in the shell (2) to the cold storage.

9. The cold storage screen demisting system according to claim 1 is characterized in that: The screen (3) is provided with an environmental monitoring sensor (6), and the environmental monitoring sensor (6) is used to detect the temperature and humidity on the front and inside of the screen (3) in real time.

10. A cold storage, characterized in that: The cold storage includes the cold storage screen demisting system according to any one of claims 1 to 9.

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