CN217708943U

CN217708943U - UVC LED module that disinfects

Info

Publication number: CN217708943U
Application number: CN202221535973.1U
Authority: CN
Inventors: 任新豪; 江舟
Original assignee: Shenzhen Huazhen Technology Co ltd
Current assignee: Shenzhen Huazhen Technology Co ltd
Priority date: 2022-06-17
Filing date: 2022-06-17
Publication date: 2022-11-01
Anticipated expiration: 2032-06-17

Abstract

A UVC LED sterilization module comprises a nut, an outer shell, an inner liner, a light-transmitting material, a light source board and a radiator. The nut and the shell form a screw structure, and the UVC LED sterilization module is fixed in the perforated plate. The lining and the shell are connected and fixed through a first buckle of the lining and a first clamping groove of the shell. The light-transmitting material is a pipe cap without a flange edge. The light source plate comprises a UVC LED and a circuit board, the UVC LED is fixed on the circuit board, and the circuit board is fixedly connected with the inner liner. The radiator is attached to the bottom of the circuit board. The embodiment of the application provides a novel UVC LED modular structure that disinfects, has reduced metal material's quantity by a wide margin through good heat conduction route, has solved the contradiction between the heat-sinking capability and the cost of product to make the application of product under the low-cost high-power condition become possible, promoted the reliability and the general usefulness of product.

Description

UVC LED module that disinfects

Technical Field

The utility model relates to an ultraviolet sterilization disinfection field especially relates to a UVC LED module of disinfecting, mainly is applied to the water dispenser storage water tank, also can be used to disinfection box, sterilamp, cross STREAMING water scene such as disinfect.

Background

Some drinking fountains, water purifier products on the market have carried the storage water tank, get up the water storage after purifying to alleviate the drinking water waiting problem that the system water ability is not enough brought. However, under the condition of standing for a long time, microorganisms can breed in the water storage tank to cause pollution of drinking water, and the scheme for effectively inhibiting the breeding of water tank bacteria is to arrange the UVC LED sterilization module in the water storage tank.

The current UVC LED sterilization module scheme can not form a good heat conduction path, improves the heat dissipation capability of the module and increases the product cost greatly only by using a large area of metal materials.

Please refer to CN 201720781045-a sealed and detachable water sterilization assembly: the patent uses the light-transmitting material with the flange edge, so the cost is higher; the bottom of the light source PCB is not attached to the shell material, so that a good heat conduction path cannot be formed, the whole shell needs to be replaced by metal when the light source PCB is used at high power, and the cost is high.

Please refer to CN 201820642614-an ultraviolet sterilization module: the patent also uses the light-transmitting material with the flange edge, so the cost is higher; the bottom of the light source PCB is not attached to the shell material, so that a good heat conduction path cannot be formed, and when the light source PCB is used at high power, the supporting material of the light source plate needs to be replaced by metal, so that the cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a UVC LED module of disinfecting for solve following technical problem: the current UVC LED sterilization module scheme can not form a good heat conduction path, improves the heat dissipation capacity of the module and only depends on large-area use of metal materials, and greatly increases the product cost.

An aspect of an embodiment of the present application provides a UVC LED sterilization module, including: a nut having an internal thread; the lamp holder comprises a shell, a lamp holder and a lamp holder, wherein one end of the shell is a screw, the other end of the shell is a clamping part, the screw is provided with an external thread, the clamping part is provided with a first clamping groove, and the internal thread of a screw cap is mutually coupled with the external thread of the screw so as to fix the UVC LED sterilization module in a perforated plate; the lining is provided with a first buckle, and the lining and the shell are connected and fixed through the first buckle of the lining and a first clamping groove of the clamping part; the light-transmitting material is in a pipe cap shape, has no flange edge, is sleeved on the lining and is provided with an opening end and a sealing end which are opposite; the light source plate is positioned in the light-transmitting material and close to the sealing end, the light source plate comprises a UVC LED and a circuit board, the UVC LED is fixed on the circuit board, and the circuit board is fixedly connected with the inner liner; and the radiator is fixed on the lining and is attached to the bottom of the circuit board.

Optionally, the UVC LED sterilization module further includes a gasket, the gasket is sandwiched between the aperture plate and the outer shell, and the nut, the gasket and the outer shell form a screw structure to fix the UVC LED sterilization module in the aperture plate.

Optionally, the inner liner is provided with a groove, and two gaskets are sandwiched between the light-transmitting material and the inner liner and placed in the groove.

Optionally, the UVC LED is formed by one or more encapsulated UVC LED beads and is fixed on the circuit board by solder paste welding; or the UVC LED is a single or multiple UVC LED chips, is fixed on the circuit board in an eutectic mode, and ensures electrical connection.

Optionally, the inner liner is further provided with a second buckle, the circuit board is provided with a second clamping groove, and the inner liner and the circuit board are fixedly connected through the second buckle and the second clamping groove.

Optionally, the contact surface of the circuit board and the heat sink is filled with a heat conductive material.

Optionally, the inner liner is further provided with a first notch, the radiator is provided with a second notch, and a lead of the light source board penetrates through the first notch and the second notch, passes through the hollow radiator and is led out to the outside for power supply.

Optionally, the inner space of the heat sink and the gap between the heat sink and the lining are fixed and sealed by filling a sealant.

Optionally, the bottom gap between the liner and the outer shell is sealed by filling a sealant.

Optionally, the light-transmitting material is an arc-shaped straight pipe cap without a flange edge at the bottom, or the light-transmitting material is a planar pipe cap without a flange edge at the bottom.

The UVC LED module that disinfects that this application embodiment provided can reach following technological effect:

(1) the transparent material without the flange is used, so that the product cost is reduced;

(2) the heat radiator is attached to the bottom of a circuit board (such as a light source PCB) (such as the bottom is completely attached), so that the heat conduction performance is enhanced;

(3) the independent radiator is arranged, the radiator and the shell are made of independent materials, the radiator can be flexibly selected and adjusted, and the cost is reduced.

Drawings

Fig. 1-7 schematically show a structural schematic diagram of an embodiment of the UVC LED sterilization module of the present invention.

Fig. 8 is a schematic diagram illustrating an embodiment of the lead wire of the UVC LED germicidal module of the present invention.

Fig. 9 is a schematic diagram illustrating an embodiment of a heat conduction path of the UVC LED sterilization module according to the present invention.

Description of the main element symbols:

1. nut 2, gasket 3, shell 4, light-transmitting material 5 and gasket

6. Light source plate 7, inner lining 8, radiator 9, perforated plate

11. Internal thread 31, external thread 32, first draw-in groove

31a, a screw 32a, and a fastening part

61. UVC LED 62, circuit board 621, second draw-in groove

71. Second catch 72, first notch 73, groove 74 and first catch

81. Second gap

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clearly understood, the present invention is further described in detail with reference to the accompanying drawings and the embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that the descriptions relating to "first", "second", etc. in the embodiments of the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The following are explanations of terms referred to in the present application:

UVC LED: i.e., deep ultraviolet light emitting diodes. Similar to the traditional white light LED, the LED emits invisible deep ultraviolet light, and the light with the wavelength can destroy the molecular structure of DNA (deoxyribonucleic acid) or RNA (ribonucleic acid) of microorganisms, so that bacteria can die or cannot reproduce, and the aim of sterilization is fulfilled. UVC LED is a new kind of artificial deep ultraviolet light source.

Hereinafter, the patent-protected UVC LED sterilization module will be described by way of example.

By way of example, the UVC LED germicidal module may include a screw cap 1, an outer housing 3, an inner liner 7, a light transmissive material 4, a light source board 6, and a heat sink 8. The nut 1 has an internal thread 11. The housing 3 has a screw 31a at one end and a fastening portion 32a at the other end, the screw 31a has an external thread 31, and the fastening portion 32a has a first engaging groove 32. The internal threads 11 of the nut 1 and the external threads 31 of the screw 31a are coupled with each other to fix the UVC LED sterilization module in the aperture plate 9. The liner 7 is provided with a first buckle 74, and the liner 7 and the shell 3 are connected and fixed with the first slot 32 of the fastening part 32a through the first buckle 74 of the liner 7. The light-transmitting material 4 is in the shape of a pipe cap without a flange edge, is sleeved on the lining 7 and is provided with an opening end and a sealing end which are opposite. The light source plate 6 is located inside the light transmitting material 4 and near the sealed end. The light source board 6 includes UVC LEDs 61 and a circuit board 62, the UVC LEDs 61 are fixed on the circuit board 62, and the circuit board 62 is fixedly connected with the inner liner 7. The heat sink 8 is fixed to the inner liner 7 and attached to the bottom of the circuit board 62 (e.g., the bottom is completely attached).

By way of example, the UVC LED sterilization module further comprises a gasket 2, the gasket 2 is clamped between the perforated plate 9 and the outer shell 3, and the nut 1, the gasket 2 and the outer shell 3 form a screw structure to fix the UVC LED sterilization module in the perforated plate 9.

By way of example, the liner 7 is provided with a groove 73, and the

light transmissive material

4 and 7 sandwich two gaskets 5 therebetween, the two gaskets 5 being placed in the groove 73.

By way of example, the UVC LED 61 is composed of one or more encapsulated UVC LED lamp beads, and is fixed on the circuit board 62 by solder paste soldering; or the UVC LED 61 is a single or multiple UVC LED chips, and is fixed on the circuit board 62 in a eutectic manner, and ensures electrical connection.

As an example, the inner liner 7 is further provided with a second fastener 71, the circuit board 62 is provided with a second fastener 621, and the inner liner 7 and the circuit board 62 are fixedly connected with the second fastener 621 through the second fastener 71.

As an example, the contact surface of the circuit board 62 with the heat sink 8 is filled with a thermally conductive material.

As an example, the inner liner 7 is further provided with a first notch 72, the heat sink 8 is provided with a second notch 81, and the wires of the light source board 6 pass through the first notch 72 and the second notch 81, pass through the hollow heat sink, and are led out to the outside for supplying power, as shown in fig. 8.

By way of example, the inner space of the heat sink 8 and the gap between the heat sink 8 and the lining 7 are fixed and sealed by filling a sealant.

As an example, the bottom gap between the liner 7 and the outer shell 3 is sealed by filling a sealant.

By way of example, the light-transmitting material 4 is an arc-shaped straight pipe cap without a flange at the bottom, or alternatively, the light-transmitting material is a planar pipe cap without a flange at the bottom.

Compared with the background art, the UVC LED sterilization module provided by the embodiment of the application can achieve the following technical effects:

(1) the transparent material 4 without flange is used, so that the product cost is reduced;

(2) the heat sink 8 is attached to the bottom of the circuit board 62 (e.g., the light source PCB) (e.g., the bottom is completely attached), so that the heat conduction performance is enhanced;

(3) the independent radiator 8 is arranged, the radiator 8 and the shell 3 are made of independent materials, the selection and the adjustment can be flexibly carried out, and the cost is reduced.

The embodiment of the application provides a novel UVC LED modular structure that disinfects, has reduced metal material's quantity by a wide margin through good heat conduction route, has solved the contradiction between the heat-sinking capability and the cost of product to make the application of product under the low-cost high-power condition become possible, promoted the reliability and the general use nature of product.

One specific embodiment of the UVC LED germicidal module (simply referred to as "germicidal module") of the present application is schematically described below in conjunction with fig. 1-9.

(1) The nut 1, the gasket 2 and the shell 3 form a screw structure, and the whole sterilization module is fixed in a perforated plate 9 of a water tank and other using environments.

Wherein the internal thread 11 and the external thread 31 are coupled with each other, and the sterilization module is fixed in a rotating and screwing mode, so that the perforated plate 9 with different thicknesses can be matched.

Wherein the gasket 2 is sandwiched between the apertured plate 9 and the housing 3 to provide water resistance, as shown in figure 7.

(2) The light-transmitting material 4 functions to protect the internal structure (dust-proof and water-proof) and also needs to have a good transmittance for deep ultraviolet rays. The transparent material 4 may be quartz glass, sapphire glass, fluorine resin, etc., but is not limited thereto.

Two gaskets 5 are clamped between the light-transmitting material 4 and the lining 7, so that the waterproof function is achieved. The gasket 5 is placed in the groove 73 and plays a waterproof role after being extruded and deformed.

The light-transmitting material 4 in this example is an arc-shaped straight cap, the bottom of which is free of a flange. The shape of the cambered surface can be changed according to the situation, and a planar pipe cap can be selected.

(3) The light source plate 6 is used for providing deep ultraviolet light required for sterilization after being electrified. The light source board 6 is composed of UVC LEDs 61 and a circuit board 62.

The UVC LED 61 has the light-emitting wavelength of 200-280nm, can be formed by single or multiple packaged UVC LED lamp beads, is fixed on the circuit board 62 in a solder paste welding mode and ensures electrical connection; or single or multiple UVC LED chips, which may be 10 × 20mil, 20 × 20mil, 30 × 30mil, etc., may be attached to the circuit board 62 by eutectic or the like and electrically connected.

The circuit board 62 is a printed circuit board (MCPCB) with a metal substrate, which may be selected from aluminum or copper. It may also be a circuit board with a ceramic substrate, such as aluminum nitride, alumina ceramic, etc.

The circuit board 62 and the inner liner 7 are fixed by a second fastener 71.

The contact surface of the circuit board 62 with the heat sink 8 is filled with a heat conductive material (heat conductive silicone grease, heat conductive adhesive, etc.).

The wires of the light source board 6 pass through the first notch 72 and the second notch 81, pass through the hollow heat sink 8, and are led out of the module so as to be supplied with power from the outside, as shown in fig. 8.

(4) The heat sink 8 serves to provide a heat conduction and dissipation path, and may be made of materials having high heat conductivity, such as aluminum alloy and copper alloy. The heat conduction path is shown in fig. 9.

The internal space of the heat sink 8 and the gap between the heat sink 8 and the lining 7 are fixed and sealed by filling the sealant.

(5) The lining 7 and the shell 3 are connected and fixed with the first clamping groove 32 through the first buckle 74, and the bottom gap is sealed by filling sealant.

The embodiment of the application is compared with two ultraviolet irradiation sterilization modes in the background art, and the advantages of the embodiment of the application are explained.

The disadvantages of the background art are as follows:

(1) using a light-transmitting material with flanged edges

The existing method uses a light-transmitting material with a flanged edge because the material with the flanged edge is easy to fix. However, with the most common deep ultraviolet light transmitting materials: for example, the cost of the quartz glass cap with the flange is more than two times higher than that of the quartz glass cap without the flange, and is about 15-20% of the total cost of the whole sterilization module.

(2) Poor heat conduction path

The main heating point of the light source PCB is concentrated under the lamp bead, namely the central position of the PCB. And the central point of light source PCB bottom of the existing scheme puts and does not laminate with the heat conduction material, only leans on the contact position of PCB edge small area to carry out the heat conduction, and the heat conduction efficiency is low.

(3) Radiator and shell structure integrated

The existing scheme does not have a special heat dissipation part, and if the heat dissipation needs to be enhanced, the whole shell part needs to be changed into a metal material, so that the cost of the product is greatly increased.

In contrast, the embodiments of the present application have the following advantages:

(1) the light-transmitting material is not provided with a flange

This patent scheme uses the printing opacity material 4 of straight tube type, has optimized fixed mode, the cost is reduced when guaranteeing the performance.

(2) The heat conduction path is smooth

This patent scheme radiator 8 laminates completely with the bottom of light source PCB (circuit board 62), and heat transfer area is big, can effectively derive the heat of LED light source.

(3) Independent heat sink design

The radiator 8 of this patent scheme is independent with necessary housing part, can select for use as the accessory is nimble. Whether this radiator is used to the nimble selection of power size according to the module that disinfects, and under the complete unchangeable condition of other structures, only adjust the material of radiator and just can match different heat dissipation demands, the saving cost of at utmost.

The above is only the preferred embodiment of the present invention, not limiting the scope of the present invention, all of which utilize the equivalent structure or equivalent flow transformation made in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, all included in the same reason in the protection scope of the present invention.

Claims

1. A UVC LED sterilization module, comprising:

a nut having an internal thread;

the lamp holder comprises a shell, a lamp holder and a lamp holder, wherein one end of the shell is a screw, the other end of the shell is a clamping part, the screw is provided with an external thread, the clamping part is provided with a first clamping groove, and the internal thread of a screw cap is mutually coupled with the external thread of the screw so as to fix the UVC LED sterilization module in a perforated plate;

the lining is provided with a first buckle, and the lining and the shell are connected and fixed through the first buckle of the lining and a first clamping groove of the clamping part;

the transparent material is in a pipe cap shape, has no flange edge, is sleeved on the lining, and is provided with an opening end and a sealing end which are opposite;

the light source plate is positioned in the light-transmitting material and close to the sealing end, the light source plate comprises a UVC LED and a circuit board, the UVC LED is fixed on the circuit board, and the circuit board is fixedly connected with the inner lining;

and the radiator is fixed on the lining and is attached to the bottom of the circuit board.

2. The UVC LED sterilization module of claim 1, further comprising a spacer sandwiched between the aperture plate and the housing, the nut and the spacer and the housing forming a screw structure to secure the UVC LED sterilization module in the aperture plate.

3. The UVC LED sterilization module of claim 1, wherein the inner liner is provided with a groove, and the light transmissive material and the inner liner sandwich two gaskets therebetween, the two gaskets being placed in the groove.

4. The UVC LED sterilization module of claim 1, wherein the UVC LED is composed of single or multiple encapsulated UVC LED lamp beads and is fixed on the circuit board in a solder paste welding mode; or the UVC LED is a single or multiple UVC LED chips, is fixed on the circuit board in an eutectic mode, and ensures electrical connection.

5. The UVC LED sterilization module of claim 1, wherein said inner liner is further provided with a second fastener, said circuit board is provided with a second slot, and said inner liner and said circuit board are fixedly connected through said second fastener and said second slot.

6. The UVC LED sterilization module of claim 1, wherein a contact surface of the circuit board with the heat sink is filled with a thermally conductive material.

7. The UVC LED sterilization module according to claim 5, wherein the inner liner is further provided with a first notch, the heat radiator is provided with a second notch, and the wires of the light source board pass through the first notch and the second notch, pass through the hollow heat radiator and are LED out to the outside for supplying power.

8. The UVC LED sterilization module of claim 7, wherein the inner space of the heat sink and the gap between the heat sink and the inner liner are fixed and sealed by filling a sealant.

9. The UVC LED sterilization module of claim 8, wherein a bottom gap between the inner liner and the outer shell is sealed by filling a sealant.

10. The UVC LED sterilization module of claim 1, wherein the light transmissive material is an arc-shaped straight cap with no flange at the bottom, or a planar cap with no flange at the bottom.