CN210329221U

CN210329221U - LED module for sterilizing and inhibiting bacteria of refrigerating chamber and refrigerating device

Info

Publication number: CN210329221U
Application number: CN201920584679.1U
Authority: CN
Inventors: 张舒怡; 黄永特; 冯雷磊; 李兴龙; 涂建斌; 余长治
Original assignee: Xiamen Sanan Optoelectronics Technology Co Ltd
Current assignee: Xiamen Sanan Optoelectronics Technology Co Ltd
Priority date: 2019-04-26
Filing date: 2019-04-26
Publication date: 2020-04-17
Anticipated expiration: 2029-04-26

Abstract

The utility model provides a LED module for sterilization and bacteriostasis of a refrigerating chamber and a refrigerating device, wherein the LED module comprises at least one LED lamp bead for emitting ultraviolet light for sterilization and bacteriostasis; the LED lamp comprises at least one substrate, wherein the first surface of each substrate is provided with at least one LED lamp bead; the circuit controller is electrically connected with the LED lamp beads and controls the irradiation duration and the irradiation frequency of the LED lamp beads; the LED lamp beads are arranged on the base plates in series or in parallel, and the arrangement of the LED lamp beads on the base plates is determined according to the size of an object to be irradiated. The LED lamp beads comprise deep ultraviolet LED lamp beads. The utility model discloses a LED module and cold storage plant can guarantee that the LED module can radiate the food etc. that need be illuminated completely. Has better sterilization and bacteriostasis effects and has good fresh-keeping effect on food. The LED module does not contain mercury at all, and the deep ultraviolet light can also effectively degrade pesticide residues on the surfaces of fruits, vegetables and other foods, so that the damage to the human health and the environmental safety of users can be avoided while sterilization, bacteriostasis and freshness preservation are realized.

Description

LED module for sterilizing and inhibiting bacteria of refrigerating chamber and refrigerating device

Technical Field

The utility model relates to a LED light source especially deep ultraviolet LED light source's application, in particular to a LED module and cold storage plant that is used for walk-in to disinfect antibacterial.

Background

The refrigerating device with the refrigerating chamber, such as a refrigerator and the like, has a fresh-keeping effect on foods such as vegetables, meat, eggs and the like, brings great convenience to the life of people, and brings great convenience to the life of people to a great extent. In order to keep food fresh, the working temperature of the refrigerating chamber is generally higher than 0 ℃, so that conditions are created for breeding and propagating various bacteria, the food stored in the refrigerating chamber is easy to slightly deteriorate, and the eating of the slightly deteriorated food can cause certain damage to human bodies, such as digestive tract diseases and the like.

In order to sterilize food while refrigerating food and further achieve a fresh-keeping effect, various refrigerating chamber sterilization technologies, such as an ultraviolet sterilization technology or a sterilization technology combining ultraviolet light and a photocatalyst material, have been developed. The ultraviolet generating device in the sterilization technology is fixed in position, cannot irradiate food comprehensively, is unsatisfactory in sterilization effect, or can achieve a certain sterilization effect, but is poor in food preservation effect.

In addition, many of the existing refrigerating apparatuses, such as refrigerators and the like, are sterilized by using mercury lamps, and it is known that mercury is a toxic substance and mercury poisoning is caused by sucking mercury vapor or eating foods contaminated by mercury or sucking mercury compounds. People also pay more and more attention to the use and development of mercury and mercury products. For example, the Water ensure convention expressly sets forth the goal of protecting human health and the environment from the hazards of the artificial emission and release of mercury and mercury compounds. Therefore, there is a need for a new technology that can sterilize and keep food in the refrigerating chamber and can avoid harm to human health or environment.

SUMMERY OF THE UTILITY MODEL

In view of the above prior art's shortcoming, the utility model aims to provide a LED module and cold storage plant for walk-in is antibacterial disinfects, and the position of dark ultraviolet LED lamp pearl in this LED module is arranged more in a flexible way to reach the frequency of irradiation when can controlling shining of LED lamp pearl, thereby shine the food in the walk-in better more comprehensively, disinfect antibacterial, fresh-keeping effect is better.

According to the utility model discloses an aspect provides a LED module that is used for walk-in to disinfect antibacterial, include:

the LED lamp beads are used for emitting ultraviolet light for sterilization and bacteriostasis;

the LED lamp comprises at least one substrate, wherein the first surface of each substrate is provided with at least one LED lamp bead;

the circuit controller is electrically connected with the LED lamp beads and controls the irradiation duration and the irradiation frequency of the LED lamp beads;

the LED lamp beads are arranged on the base plate in series or in parallel, and the arrangement of the LED lamp beads on the base plate is determined according to the size of an object to be irradiated.

Optionally, the LED module further comprises a protective layer,

the protective layer independently coats the LED lamp beads and is connected to the first surface of the substrate; and/or

The protective layer is located the base plate cover on the first face LED lamp pearl, cover simultaneously and be connected to first face.

Optionally, the protective layer is resistant to humidity in excess of 70% and to temperatures less than 10 ℃.

Optionally, the LED module further includes an active/passive heat sink disposed on a second face of the substrate opposite the first face.

Optionally, the total radiance of the LED module is greater than 100mW, and the radiation area is greater than or equal to 5cm by 5 cm.

Optionally, the LED lamp beads include deep ultraviolet LED lamp beads, the wavelength range is 200nm to 300nm, and the half-wave width is less than 15 nm.

Optionally, the wavelength range of the LED lamp bead is 270nm to 290 nm.

Optionally, the LED lamp bead further comprises a visible light LED lamp bead.

According to the utility model discloses a second aspect provides a cold storage plant, including the walk-in, cold storage plant still sets up including the LED module that is used for disinfecting in the walk-in, the LED module includes:

the LED lamp beads are used for emitting ultraviolet light for sterilization;

the LED lamp bead structure comprises at least one substrate, a plurality of LED lamp beads and a plurality of LED lamp beads, wherein the substrate is arranged on the inner side of a top panel of the refrigerating chamber;

at least one substrate in the LED modules is arranged in series or in parallel, and the arrangement of the LED lamp beads on the substrate is determined according to the size of an object needing to be irradiated in the refrigerating chamber.

Optionally, the LED module further comprises a protective layer,

The protective layer is located the first face of base plate is last to cover LED lamp pearl.

Optionally, the distance between the LED module and the illuminated object in the refrigeration compartment is less than 30 cm.

Optionally, the LED lamp beads include deep ultraviolet LED lamp beads, the wavelength range of the emitted ultraviolet light is 200nm to 300nm, and the half-wave width is less than 15 nm.

Optionally, the wavelength range of the ultraviolet light emitted by the LED lamp bead is 270nm to 290 nm.

Optionally, the LED lamp bead further comprises a visible light LED lamp bead.

Optionally, the interiors of the panels of the refrigerating chamber except the top panel are all provided with reflecting surfaces to form a reflecting cavity for ultraviolet light emitted by the LED lamp beads, and the reflectivity of the reflecting cavity is greater than 1%.

Optionally, the circuit controller and the active/passive heat sink are integrally disposed on the substrate and disposed in the refrigerating chamber together with the substrate.

Optionally, the refrigerating chamber includes a control element, and the circuit controller and the active/passive heat sink are integrated with the control element of the refrigerating chamber.

Optionally, the refrigeration device comprises a refrigerator. As described above, the utility model discloses a LED module and cold storage plant for walk-in sterilization has following beneficial effect:

the utility model discloses a LED module and cold storage plant, including the LED lamp pearl that is used for disinfecting, LED lamp pearl preferably adopts dark ultraviolet LED lamp pearl, the size of the object that LED lamp pearl arranged on the base plate can shine as required sets up to guarantee that the LED module can radiate the object that needs are shone completely, for example the food etc. in the refrigerator compartment. Has better sterilization effect.

The utility model provides a LED lamp pearl of LED module includes dark ultraviolet LED lamp pearl, when disinfecting antibacterial, plays fine fresh-keeping effect to food. For example, the utility model discloses a LED module can delay the increase of the TVB-N (total volatile basic nitrogen) value of meat products under the prerequisite that does not destroy the colour and luster and the outward appearance of meat products in cold-stored to increase the fresh-keeping time of meat products, realize the dual more excellent effect of antibacterial and fresh-keeping of disinfecting. In addition, the deep ultraviolet light can effectively degrade pesticide residues on the surfaces of foods such as fruits and vegetables, for example, organic chlorine pesticides, carbamate pesticides, organic phosphorus pesticides and the like can be effectively degraded by chemical reactions such as photo-oxidation, photo-reduction, photo-hydrolysis, molecular isomerization and the like caused by ultraviolet irradiation. Therefore, the LED module can restore the original health state of food while sterilizing, inhibiting bacteria and keeping fresh.

In addition, the LED module is provided with the circuit controller, the irradiation time and the irradiation frequency of the LED lamp beads can be controlled according to the object to be irradiated, and the energy consumption can be well reduced while the object to be irradiated is effectively sterilized.

All the other panels of the cold storage chamber except the panel provided with the LED module are set as reflecting surfaces, and ultraviolet light emitted by the LED lamp beads is reflected, so that the ultraviolet light is irradiated to an object to receive the ultraviolet light, and the sterilization effect is further improved.

The LED module can also comprise visible light LED lamp beads, so that the user can be reminded of using safety while illumination is provided for the refrigerating chamber. The utility model discloses a LED module does not contain mercury completely, consequently when disinfecting antibacterial, fresh-keeping, can not cause the harm to user's health and environmental safety.

Drawings

Fig. 1 is a schematic structural diagram of an LED module according to a first embodiment of the present invention.

Fig. 2 is an exploded view of the structure of the LED module shown in fig. 1.

Fig. 3 is a schematic sectional view taken along the direction a-a shown in fig. 1.

Fig. 4 is a schematic cross-sectional view of an LED module according to an embodiment of the present invention.

Fig. 5 is a schematic cross-sectional view of an LED module according to a third embodiment of the present invention.

Fig. 6 is a schematic view showing a refrigerating chamber structure of a refrigerating apparatus according to a fourth embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a refrigerating chamber of a refrigerating apparatus according to a fifth embodiment of the present invention.

Fig. 8 is an exploded view schematically showing the structure of the refrigerating compartment shown in fig. 7.

Fig. 9 is a schematic structural diagram of a refrigerating chamber of a refrigerating apparatus according to a sixth embodiment of the present invention.

Description of the element reference numerals

100 substrate

First side of 100-1 substrate

100-2 second side of the substrate

101 LED lamp bead

102 protective layer

200 refrigerating chamber

201 Top Panel

202 right side panel

203 left side panel

204 rear panel

205 lower surface plate

206 door body

300 refrigerating chamber

301 top panel

302 right side panel

303 left side panel

304 rear panel

305 lower side panel

306 door body

307 baffle plate

307-1 first side of the separator

308 drawer

400 cold storage device

401 independent chamber of refrigeration device

Top panel of 401-1 chamber

401-2 Right Panel

401-3 left side panel

401-4 bottom panel

Door body of refrigerating chamber of 402 refrigerating device

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

Example one

To solve the problems of unsatisfactory sterilization effect and fresh-keeping effect of the refrigerating chamber in the prior art, the present embodiment provides an LED module for sterilization and bacteriostasis of the refrigerating chamber, as shown in fig. 1 and 2, the LED module for sterilization and bacteriostasis of the refrigerating chamber of the present embodiment includes at least one LED lamp bead 101, at least one substrate 100, and a circuit controller (not shown).

The LED lamp beads 101 are used for emitting ultraviolet light with a sterilization effect, the LED lamp beads 101 comprise deep ultraviolet LED lamp beads, the wavelength range of the emitted ultraviolet light is 200 nm-300 nm, and the half-wave width is smaller than 15 nm. The light emitting angle of the LED lamp beads 101 is smaller than 180 degrees, and the long edge of a deep ultraviolet chip used by the deep ultraviolet LED lamp beads 101 is not smaller than 10 mils.

In a preferred embodiment of this embodiment, the wavelength range of the deep ultraviolet light emitted by the deep ultraviolet LED lamp bead 101 is 270nm to 290 nm.

As shown in fig. 2 and also referring to fig. 3, the substrate 100 includes a first surface 100-1 and a second surface 100-2 opposite to the first surface, at least one LED bead 101 is disposed on the first surface 100-1, and the at least one LED bead 101 may be located at any position of the first surface 100-1. The positions of the LED lamp beads 101 on the substrate and the distance between the LED lamp beads 101 can be set according to the size of an object to be irradiated. Therefore, the irradiated object can be uniformly irradiated, and the sterilization effect is enhanced. For example, in a preferred embodiment of this embodiment, the distance between some LED beads is less than 20 cm. The total radiance of the LED module is larger than 100mW, and the radiant area is larger than or equal to 5cm by 5 cm.

The substrate 100 may be a material that can be used to fix the LED lamp bead 101 and also can guide out and dissipate heat generated by the LED lamp bead 101 during operation in time. For example, an aluminum substrate. The substrate is installed in a refrigerating chamber.

As shown in fig. 1 and 2, the LED module includes only one substrate, and the LED module of the present embodiment may also include two or more substrates, and the two or more substrates may be arranged in series or in parallel.

As also shown in fig. 1 and 2, the LED module further includes a protective layer 102 for protecting the LED lamp bead 101. As shown in fig. 3, the protective layer 102 of the embodiment is located on the first surface 100-1 of the substrate 100 and covers the LED bead 101, and meanwhile, the protective layer 102 covers the entire first surface 100-1 of the substrate 100 and is connected to the first surface 100-1. In order to protect the LED lamp beads without affecting the operation of the LED lamp beads and meet the environmental requirements of the refrigerating chamber, the protective layer 102 is designed to be transparent to ultraviolet light and has the characteristics of water resistance, moisture resistance and low temperature resistance. For example, the protective layer may be resistant to humidity in excess of 70% and may be resistant to temperatures less than 10 ℃. For example, the protective layer 102 may be quartz glass, a fluorine-containing material, or the like, which can withstand deep ultraviolet radiation and transmit deep ultraviolet radiation.

In addition, the LED module for sterilizing the refrigerating chamber further includes a circuit controller (not shown), which is electrically connected to the LED lamp beads to control the irradiation duration and the irradiation frequency of the LED lamp beads 101. Thereby, power consumption for sterilization can be reduced. Also not shown, but included in the LED module are components such as a drive power supply, active/passive heat sinks, and the like. The driving power supply can provide proper input current and voltage for the LED lamp beads 101 in the LED module so as to ensure that the LED lamp beads 101 work normally. The active/passive radiator is arranged on the second surface 100-2 of the substrate 100, and when the LED lamp bead 101 works, the active/passive radiator further conducts heat generated by the LED during working out in time. The active/passive radiator can be made of metal, graphene products and other materials with good heat conducting performance.

In a preferred embodiment of this embodiment, the LED lamp bead 101 further includes a visible light LED lamp bead. Providing illumination for the refrigerated compartment. In addition, the visible light LED lamp beads can also comprise red visible light LED lamp beads, so that a user can be reminded of paying attention to operation safety.

Example two

The present embodiment also provides an LED module for sterilizing a refrigerating chamber, which is the same as the first embodiment and will not be described again, except that:

as shown in fig. 4, in the present embodiment, the protective layer 102 individually covers each LED bead 101 and is connected to the first surface 100-1 of the substrate 100.

EXAMPLE III

as shown in fig. 5, in this embodiment, the protective layer 102 includes a portion that covers one LED bead 101 and is connected to the first surface 100-1 of the substrate 100, and also includes a portion that covers a plurality of LED beads and is also connected to the first surface 100-1 of the substrate 100.

Example four

The embodiment provides a refrigerating device, and this refrigerating device includes the walk-in, and this refrigerating device still includes the LED module that is used for disinfecting, and this LED module sets up in the walk-in. As shown in fig. 6, a refrigerating compartment 200 of the refrigerating apparatus according to the present embodiment is shown.

Still referring to fig. 1 and 2, the LED module includes a plurality of LED lamp beads 101, a substrate 100, and a circuit controller (not shown).

In a preferred embodiment of this embodiment, the wavelength range of the deep ultraviolet light emitted by the deep ultraviolet LED lamp bead 101 is 270nm to 290 nm. The deep ultraviolet LED lamp bead can achieve a good fresh-keeping effect on food while sterilizing and inhibiting bacteria. For example, the deep ultraviolet light emitted by the deep ultraviolet LED lamp bead can delay the increase of the TVB-N value of the meat product on the premise of not damaging the color and appearance of the meat product in refrigeration, thereby increasing the preservation time of the meat product and realizing the double better effects of sterilization, bacteriostasis and preservation. In addition, the deep ultraviolet light can effectively degrade pesticide residues on the surfaces of foods such as fruits and vegetables, for example, organic chlorine pesticides, carbamate pesticides, organic phosphorus pesticides and the like can be effectively degraded by chemical reactions such as photo-oxidation, photo-reduction, photo-hydrolysis, molecular isomerization and the like when irradiated by ultraviolet rays, so that the original health state of the foods can be restored while sterilization, bacteriostasis and fresh keeping are carried out.

As shown in fig. 2 and also referring to fig. 3, the substrate 100 includes a first surface 100-1 and a second surface 100-2 opposite to the first surface, at least one LED bead 101 is disposed on the first surface 100-1, and the at least one LED bead 101 may be located at any position of the first surface 100-1. The positions of the LED lamp beads 101 on the substrate and the intervals between the LED lamp beads 101 may be set according to the size of an object to be irradiated in the refrigerating compartment 200 shown in fig. 6. Therefore, the irradiated object can be uniformly irradiated, and the sterilization effect is enhanced. For example, in a preferred embodiment of this embodiment, the distance between some LED beads is less than 20 cm. The total radiance of the LED module is larger than 100mW, and the radiant area is larger than or equal to 5cm by 5 cm.

The substrate 100 may be a material that can be used to fix the LED lamp bead 101 and also can guide out and dissipate heat generated by the LED lamp bead 101 during operation in time. For example, an aluminum substrate. The substrate is installed in a refrigerator compartment, and in particular, is installed inside a top panel 201 of a refrigerator compartment 200 shown in fig. 6 through a second face 100-2 such that the LED lamp beads face an illuminated article.

As also shown in fig. 1 and 2, the LED module further includes a protective layer 102, where the protective layer 102 is used for protecting the LED lamp bead 101. As shown in fig. 3, the protective layer 102 of the embodiment is located on the first surface 100-1 of the substrate 100 and covers the LED bead 101, and meanwhile, the protective layer 102 covers the entire first surface 100-1 of the substrate 100 and is connected to the first surface 100-1. In order to protect the LED lamp beads without affecting the operation of the LED lamp beads and meet the environmental requirements of the refrigerating chamber, the protective layer 102 is designed to be transparent to ultraviolet light and has the characteristics of water resistance, moisture resistance and low temperature resistance. For example, the protective layer 102 may be quartz glass, a fluorine-containing material, or the like, which can withstand deep ultraviolet radiation and transmit deep ultraviolet radiation.

As shown in fig. 6, the inner sides of the remaining panels of the refrigerating compartment 200, such as the left side panel 203, the right side panel 202, the rear panel 204, and the bottom panel 205, other than the top panel 201 on which the LED module is mounted, are provided as reflecting surfaces for reflecting ultraviolet light emitted from the LED lamp beads. The inner side of the door 206 of the refrigerating compartment 200 may be provided as the above-described reflecting surface as well. Therefore, the whole refrigerating chamber forms a reflection cavity of the LED lamp beads, ultraviolet light emitted by the LED lamp beads is reflected, and the emitted ultraviolet light irradiates an object to be irradiated, so that the sterilizing effect is improved, and the sterilizing efficiency is improved.

In addition, the LED module for sterilizing the refrigerating chamber further includes a circuit controller (not shown) electrically connected to the LED lamp beads to control the irradiation duration and the irradiation frequency of the LED lamp beads 101. Thereby, power consumption for sterilization can be reduced. Also not shown, but included in the LED module are components such as a drive power supply, active/passive heat sinks, and the like. The driving power supply can provide proper input current and voltage for the LED lamp beads 101 in the LED module so as to ensure that the LED lamp beads 101 work normally. The active/passive radiator is arranged on the second surface 100-2 of the substrate 100, and when the LED lamp bead 101 works, the active/passive radiator further conducts heat generated by the LED during working out in time. The active/passive radiator can be made of metal, graphene products and other materials with good heat conducting performance.

In a preferred embodiment of the present embodiment, the driving power source, the circuit controller, and the active/passive heat sink are integrated with the substrate 100 and are disposed in the refrigerating compartment 200 at the same time, for example, are disposed inside the top panel 201 of the refrigerating compartment 200 at the same time.

In another preferred embodiment of the present embodiment, the driving power source, the circuit controller are integrally provided with the active/passive heat sink, but are not integrally provided with the substrate, but are provided at the position of an integrated control element of the refrigerating compartment 200, for example, at the position of a control element of a refrigerating compartment fan.

In a preferred embodiment of this embodiment, the cold field device comprises a refrigerator.

EXAMPLE five

The present embodiment also provides a refrigeration apparatus, which also includes a refrigeration chamber, and the same parts as those in the fourth embodiment are not described again, except that:

as shown in fig. 7 and 8, the refrigerating compartment 300 of the present embodiment includes a partition 307 and a drawer 308 positioned below the partition, and an upper chamber 300-1 of the refrigerating compartment 300 is formed above the partition 307. In this embodiment, the LED modules are mounted on the inner side of the top panel 301, and the remaining panels of the refrigerator compartment 300, the left side panel 303, the right side panel 302 and the rear panel 304, which are located above the partition 307, are all provided as the reflective surfaces as described in the third embodiment. Similarly, door 306 of refrigerating compartment 300 may be provided as a reflecting surface. And the bottom panel 305 is no longer provided as a reflective surface. Since the partition 307 constitutes the bottom of the upper chamber 300-1, the first surface 307-1 of the partition 307 is provided as a reflecting surface in this embodiment.

Referring to fig. 8, the drawer 308 forms a separate chamber with the partition 307, and therefore, in the present embodiment, the second surface (not shown) of the partition 307 opposite to the first surface 307-1 is also provided with the LED module for sterilization as described in the third embodiment. Moreover, the inner sides of the panels of the drawer 308 are respectively provided with a reflecting surface so as to increase the reflection of ultraviolet light emitted by the LED lamp beads and enhance the sterilization effect.

In the preferred embodiment of the present embodiment, the LED module may be disposed only in the upper chamber 300-1 as described above, or may be disposed only in the independent chamber formed by the drawer 308 and the partition 307 as described above. The specific setting can be made according to actual needs or based on cost saving and the like.

EXAMPLE six

The present embodiment also provides a refrigeration apparatus, which also includes a refrigeration chamber, and the same parts as those in the fourth and fifth embodiments are not described again, except that:

as shown in fig. 9, the refrigerating chamber of the refrigerating apparatus 400 of the present embodiment includes a single chamber 401. The size and the placement position of the cavity are not particularly limited and can be set as required. In this embodiment, the LED modules are disposed in separate chambers 401.

Specifically, an LED module is arranged on a top panel 401-1 of the chamber 401, and LED lamp beads in the LED module emit deep ultraviolet light into the chamber 401, so that the functions of sterilization, bacteriostasis and freshness preservation are performed on food in the independent chamber 401. The inner sides of the other panels of the chamber 401, such as the right side panel 401-2, the left side panel 401-3 and the bottom panel 401-4, are all set as reflecting surfaces to reflect the deep ultraviolet light emitted by the LED lamp beads, so that the sterilization, bacteriostasis and freshness preservation effects are further enhanced.

As shown in fig. 9, the independent chamber 401 in this embodiment does not have a separate door, and the door 402 of the refrigerating chamber of the refrigerating apparatus 400 is also used as the door of the chamber 401, so that the door 402 is also provided as a reflecting surface at a portion corresponding to the chamber 401 in order to enhance the reflection efficiency of the deep ultraviolet light.

Of course, as can be appreciated, the chamber 401 may have a separate door structure (not shown), in which case the inner side of the separate door structure of the chamber 401 is provided as a reflective surface to enhance the reflection efficiency of deep ultraviolet light.

As described above, the utility model discloses a LED module and cold storage plant for walk-in sterilization has following beneficial effect:

the utility model discloses a LED module and cold storage plant, including the LED lamp pearl that is used for disinfecting, LED lamp pearl preferably adopts dark ultraviolet LED lamp pearl, the size of the object that LED lamp pearl arranged on the base plate can shine as required sets up to guarantee that the LED module can radiate the object that needs are shone completely, for example the food etc. in the refrigerator compartment. Has better sterilization and fresh-keeping effects.

The utility model provides a LED lamp pearl of LED module includes dark ultraviolet LED lamp pearl, when disinfecting antibacterial, plays fine fresh-keeping effect to food. For example, the utility model discloses a LED module can delay the increase of the TVB-N (volatile basic total nitrogen) value of meat products under the prerequisite of the colour and luster and the outward appearance of meat products in not destroying cold-stored to increase the fresh-keeping time of meat products, realize the dual more excellent effect of antibacterial and fresh-keeping of disinfecting, in addition, deep ultraviolet light can also effectively degrade food surface pesticide residue such as vegetables and fruits, for example organic chlorine pesticide, carbamate pesticide, organophosphorus pesticide etc. shine ultraviolet ray and take place chemical reaction such as photo-oxidation, photoreduction, photohydrolysis and molecular isomerization, can be effectively degraded. Therefore, the LED module can restore the original health state of food while sterilizing, inhibiting bacteria and keeping fresh.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. An LED module for sterilization and bacteriostasis of a refrigerating chamber is characterized by comprising:

2. The LED module of claim 1, further comprising a protective layer,

3. The LED module of claim 2, wherein the protective layer is resistant to humidity in excess of 70% and to temperatures less than 10 ℃.

4. The LED module of claim 1, further comprising an active/passive heat sink disposed on a second side of said substrate opposite said first side.

5. The LED module of claim 1, wherein the LED module has a total emissivity greater than 100mW and an area of radiation greater than or equal to 5cm by 5 cm.

6. The LED module of claim 1, wherein the LED beads comprise deep ultraviolet LED beads having a wavelength in the range of 200nm to 300nm and a half-wave width of less than 15 nm.

7. The LED module of claim 6, wherein the LED bead has a wavelength ranging from 270nm to 290 nm.

8. The LED module of claim 6, wherein the LED bead further comprises a visible LED bead.

9. A cold storage plant, includes the walk-in, its characterized in that, cold storage plant still includes the LED module that is used for disinfecting, sets up in the walk-in, the LED module includes:

the LED lamp beads are used for emitting ultraviolet light for sterilization;

10. A cold storage device according to claim 9, wherein the LED module further comprises a protective layer,

11. The LED module of claim 10, wherein said protective layer is resistant to humidity in excess of 70% and to temperatures less than 10 ℃.

12. A cold storage device as claimed in claim 9, wherein the LED module further comprises an active/passive heat sink disposed on a second face of the substrate opposite the first face.

13. A cold storage device as claimed in claim 9, wherein the LED modules have a total emissivity of greater than 100mW and an area of radiation of greater than or equal to 5cm x 5 cm.

14. A cold storage device according to claim 9, wherein the LED module is less than 30cm from the interior of the cold storage compartment above the illuminated object.

15. A refrigerator as claimed in claim 9, wherein the LED lamp beads comprise deep ultraviolet LED lamp beads, the wavelength range of the emitted ultraviolet light is 200nm to 300nm, and the half-wave width is less than 15 nm.

16. A cold storage device as claimed in claim 15, wherein the wavelength of the ultraviolet light emitted by the LED lamp beads is in the range of 270nm to 290 nm.

17. A cold storage device as claimed in claim 16, wherein the LED lamp beads further comprise visible LED lamp beads.

18. A cold storage device as claimed in claim 15, wherein the inside of the cold storage chamber except the top panel is provided with a reflecting surface to form a reflecting cavity for ultraviolet light emitted from the LED lamp beads, and the reflectivity of the reflecting cavity is greater than 1%.

19. A cold storage device as claimed in claim 12, wherein the circuit controller and the active/passive heat sink are integrally disposed on the substrate and are disposed in the cold storage compartment together with the substrate.

20. A cold storage device as recited in claim 12 wherein said cold storage compartment includes control elements, said circuit controller and said active/passive heat sink being integrally disposed with said control elements of said cold storage compartment.

21. A cold storage device as claimed in claim 9, wherein the cold storage device comprises a refrigerator.