CN219395074U - Frost prevention visual device and test sorting machine - Google Patents

Abstract

The utility model provides an anti-frost visual device and a test separator, and relates to the technical field of test separators. The anti-frost visual device provided by the utility model uses the heating element to prevent frost on the observation window, does not need to introduce dry gas into the closed environment created in the observation window assembly, saves cost, and can effectively avoid the risk of frosting and condensation on the side of the observation window assembly facing the outside under the influence of the humidity of the outside environment.

Description

Frost prevention visual device and test sorting machine

Technical Field

The utility model relates to the technical field of test sorting machines, in particular to an anti-frost visual device and a test sorting machine.

Background

With the progress of modern process technology, the use environment of semiconductor chips is becoming more and more severe, not only being limited to normal temperature and high temperature environments, but also beginning to move toward low temperature environments, so test sorters also have a tendency to be designed so that semiconductor chips can be tested in low temperature (below 0 ℃) environments.

When the test sorting machine tests for a long time in an extremely low temperature environment, the temperature of the observation window assembly is reduced to be lower than the dew point temperature, and in order to prevent the observation window assembly from frosting and dewing, the test sorting machine not only can introduce dry gas into a test area, but also can introduce the dry gas into a closed environment built in the observation window assembly. However, there are problems in that: 1. the dry gas is additionally introduced into the closed environment created in the observation window assembly, so that the consumption of the dry gas is increased, and the production cost of enterprises is increased; 2. the outer surface of the outer window in the viewing window assembly is still exposed to the outside, such as the outer side of the outer window where the outside environment is more humid, still presents a risk of frost condensation.

Disclosure of Invention

The utility model aims to provide a frostproof visual device and a test sorting machine, which use a heating element to frost a viewing window, do not need to introduce dry gas into a closed environment created in the interior of a viewing window assembly, save cost, and can effectively avoid the risk of frosting and condensation caused by the influence of the humidity of the external environment on the side of the viewing window assembly facing the outside.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

in a first aspect, the utility model provides an anti-frost visual device, comprising a heating element, an observation window assembly and a first heat insulation component, wherein the observation window assembly is provided with an outer side surface facing the outside, the heating element is arranged on the outer side surface, one side of the first heat insulation component is provided with a mounting groove, the other side of the first heat insulation component is provided with a first observation hole communicated with the mounting groove, the observation window assembly is arranged in the mounting groove, and the observation window assembly is arranged corresponding to the first observation hole.

Further, the heating element is attached to the edge of the outer side face of the observation window assembly, and a first through hole corresponding to the first observation hole is formed in the heating element.

Further, the frost prevention visual device further includes a temperature sensing assembly mounted on the first heat insulating member, the temperature sensing assembly for detecting a temperature of the heating element.

Further, the frost prevention visual device further comprises a fuse assembly mounted on the first heat insulation member, the fuse assembly is electrically connected with the heating element, and the fuse assembly is used for canceling the power-on state of the heating element when the heating temperature of the heating element exceeds the preset temperature.

Further, the frost prevention visual device further comprises a support shell, the first heat insulation component is installed in the support shell, a second observation hole opposite to the first observation hole is formed in one side, facing the test cavity, of the support shell, a third observation hole opposite to the first observation hole is formed in one side, facing the outside, of the support shell, and the second observation hole and the third observation hole are correspondingly communicated.

Further, the support housing comprises an inner housing and an outer housing which are connected with each other, wherein the inner housing is connected with the first heat insulation component and is positioned on one side of the first heat insulation component facing the test cavity;

the shell is connected with the first heat insulation component and is positioned on one side of the first heat insulation component facing the outside.

Further, a second heat insulating member is attached to a side surface of the housing facing the first heat insulating member, and a second through hole provided corresponding to the third observation hole is formed in the second heat insulating member.

Further, the frost prevention visual device further comprises a baffle plate, the baffle plate is connected with one side, facing the outside, of the support shell, the baffle plate is installed at the edge of the third observation hole, a fourth observation hole is formed in the edge of the third observation hole, and the baffle plate is used for shielding the heating element penetrating out of the third observation hole.

Further, the observation window assembly comprises a first observation window, a second observation window and a heat insulation cushion block which are all installed in the installation groove, the first observation window and the second observation window are oppositely arranged, the heat insulation cushion block is clamped between the first observation window and the second observation window, a fifth observation hole is formed in the heat insulation cushion block, and one side, deviating from the second observation window, of the first observation window is the outer side face.

In a second aspect, the utility model also provides a test handler, which comprises the frost prevention visual device.

The frost prevention visual device and the test classifier provided by the utility model have the following beneficial effects:

when the frost prevention visual device is used, the interior of the cavity is sprayed with the refrigerating gas, so that the temperature in the whole cavity is reduced to the target temperature (below 0 ℃), the heating element heats, heat is conducted to the observation window assembly contacted with the heating element, heat conduction caused by the refrigerating gas is counteracted, the temperature outside the observation window assembly is ensured to be stably kept above the dew point temperature, the heat loss of the heating element can be reduced by the first heat insulation component, and meanwhile, the temperature on the shell of the test sorting machine can be reduced to be transmitted to the observation window assembly.

Compared with the prior art, the frost prevention visual device provided by the first aspect of the utility model uses the heating element to prevent frost of the observation window, does not need to introduce dry gas into the closed environment created in the observation window assembly, saves cost, and can effectively avoid the risk of frost and dew formation on the side of the observation window assembly facing the outside under the influence of the humidity of the external environment.

The test handler provided in the second aspect of the present utility model has the frost prevention visual device provided in the first aspect of the present utility model, thereby having all the advantageous effects of the frost prevention visual device provided in the first aspect of the present utility model.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an explosion structure of an anti-frost visual device according to an embodiment of the present utility model;

FIG. 2 is a schematic three-dimensional structure of a first heat insulating member according to an embodiment of the present utility model;

FIG. 3 is a schematic three-dimensional view of a window assembly according to an embodiment of the present utility model;

FIG. 4 is a schematic three-dimensional structure of a heat insulation cushion block according to an embodiment of the present utility model;

FIG. 5 is an enlarged schematic view of a portion of FIG. 2;

FIG. 6 is a schematic three-dimensional structure of a temperature sensor assembly according to an embodiment of the present utility model;

FIG. 7 is a schematic three-dimensional structure of a fuse assembly according to an embodiment of the present utility model;

fig. 8 is a schematic three-dimensional structure of a support housing according to an embodiment of the present utility model;

FIG. 9 is a schematic three-dimensional structure of an inner shell according to an embodiment of the present utility model;

FIG. 10 is a schematic three-dimensional structure of a housing according to an embodiment of the present utility model;

FIG. 11 is a schematic three-dimensional structure of an anti-frost visual device according to an embodiment of the present utility model;

fig. 12 is a schematic three-dimensional structure of an anti-frost visual device (without a baffle) according to an embodiment of the present utility model.

Icon: 1-a heating element; 11-a first through hole; 2-a viewing window assembly; 21-a first viewing window; 22-a second viewing window; 23-heat insulation cushion blocks; 231-a fifth viewing aperture; 3-a first insulating member; 31-mounting grooves; 32-a first viewing aperture; 33-wire passing grooves; 4-a temperature sensing assembly; 41-a sensor; 42-a first mount; a 5-fuse assembly; 51-fuse; 52-a second mount; 6-a support housing; 61-an inner shell; 611-a second viewing aperture; 62-a housing; 621-side plates; 6211-a third viewing aperture; 622-coaming; 7-a second insulating member; 71-a second through hole; 8-baffle plates; 81-fourth viewing aperture.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The following describes specific embodiments of the present utility model in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the utility model, are not intended to limit the utility model.

An embodiment of the first aspect of the present utility model is to provide an anti-frost visual device, as shown in fig. 1 and 2, including a heating element 1, a viewing window assembly 2 and a first heat insulation member 3, wherein the viewing window assembly 2 has an outer side surface facing the outside, the heating element 1 is disposed on the outer side surface, one side of the first heat insulation member 3 is provided with a mounting groove 31, the other side is provided with a first viewing hole 32 communicated with the mounting groove 31, the viewing window assembly 2 is mounted in the mounting groove 31, and the viewing window assembly 2 is disposed corresponding to the first viewing hole 32.

In the anti-frost visual device provided by the embodiment, the outer side surface of the observation window assembly 2 is heated by the heating element 1, so that the phenomenon that the outer side surface of the observation window assembly 2 is affected by the external environment and frosted and condensed can be effectively avoided, the sudden faults are not affected by personnel to be timely treated, meanwhile, dry gas is not required to be introduced into the closed environment built inside the observation window assembly 2, and the production cost of enterprises is reduced.

The first heat insulating member 3 may be made of epoxy resin, or may be replaced by other materials having low heat conductivity and high temperature resistance.

The heating element 1 may take a variety of forms, such as a heating rod, a heating plate, etc.

In some embodiments, the heating element 1 employs a heating plate, which increases the contact area between the heating element 1 and the window assembly 2, and rapidly transfers heat to the window assembly 2.

When the heating element 1 is a heating plate, it may have various shapes, such as the heating plate having a first through hole 11 for the passage of a line of sight, at least at a part of the edge of the viewing window assembly 2; the shape of the heating plate may be annular, the through middle of the annular heating plate is the first through hole 11, the heating plate may be rectangular annular, circular annular, etc., and the shape of the heating plate is not limited.

Taking fig. 3 as an example for specific illustration, the heating element 1 is attached to the edge of the outer side surface of the observation window assembly 2 and is provided with a first through hole 11 corresponding to the first observation hole 32, so that a person can observe the situation in the test handler through the observation window assembly 2.

In at least one embodiment, the heating element 1 employs a silica gel heat patch.

In some embodiments, as shown in fig. 3 and 4, the observation window assembly 2 may include a first observation window 21, a second observation window 22, and an insulation pad 23 that are all installed in the installation groove 31, where the first observation window 21 and the second observation window 22 are disposed at opposite intervals with the insulation pad 23 interposed therebetween, and a side of the first observation window 21 facing away from the second observation window 22 is an outer side.

Because the cold air in the test chamber is directly contacted with the second observation window 22, the heat insulation cushion block 23 can play a role of supporting and heat insulation, so that the conduction of the temperature of the second observation window 22 to the first observation window 21 is reduced, and the temperature of the first observation window 21 is prevented from being too low.

The materials of the first and second viewing windows 21 and 22 may be transparent glass resistant to high and low temperatures.

The heat insulation cushion block 23 can be made of epoxy resin, and can be replaced by other materials with low temperature resistance and low heat conductivity coefficient.

In order to ensure that a person can observe the situation in the test chamber through the first observation window 21 and the second observation window 22 and ensure that the heat insulation cushion block 23 has a good supporting effect, as shown in fig. 4, the heat insulation cushion block 23 is provided with a fifth observation hole 231 for the passage of a sight line, and two sides of the fifth observation hole are respectively contacted with the edges of the first observation window 21 and the second observation window 22.

In some embodiments, as shown in fig. 5, the frost prevention visual apparatus further includes a temperature sensing assembly 4 mounted on the first insulation member 3.

When the temperature sensing assembly 4 is used, the temperature of the heating element 1 can be detected in real time, the temperature sensing assembly 4 can be connected with a controller, detected temperature information is fed back to the controller in real time, and the controller controls the heating temperature of the heating element 1 to be kept constant through the received temperature information, so that unnecessary accidents caused by overhigh temperature are prevented.

The feedback adjustment principle is a conventional technology in the prior art, such as variable frequency adjustment of a variable frequency air conditioner, and thus the above principle is not described in detail herein.

Specifically, as shown in fig. 6, the temperature sensing assembly 4 may include a sensor 41 and a first mounting seat 42, where the first mounting seat 42 is in a shape of a "convex" and one side of the first mounting seat is concavely provided with a first mounting groove, and the first mounting groove is used for mounting the sensor 41 and passing a wire, and the first mounting seat 42 may be mounted on the first heat insulation member 3 through a connection member such as a bolt.

The first mount 42 may extend from the first insulating member 3 to a side of the heating element 1 facing away from the first viewing window 21 such that the sensor 41 thereon is able to face the heating element 1. The sensor may be a contact temperature sensor.

In some embodiments, as shown in fig. 5 and 7, the frost prevention visual apparatus further includes a fuse assembly 5 mounted on the first heat insulation member 3, the fuse assembly 5 being electrically connected to the heating element 1, the fuse assembly 5 being configured to cancel an energized state of the heating element 1 when a heating temperature of the heating element 1 exceeds a preset temperature.

When the heating temperature of the heating element 1 exceeds the preset temperature, the fuse assembly 5 is fused, the circuit where the heating element 1 is positioned is disconnected, and the heating element 1 stops heating, so that the over-temperature protection function is realized.

Specifically, as shown in fig. 7, the fuse assembly 5 may include a fuse 51 and a second mount 52, the second mount 52 having a rectangular shape, one side of which is concavely provided with a second mount groove for mounting the fuse 51, and the second mount 52 may be mounted on the first heat insulating member 3 by a connection member such as a bolt.

Wherein the second mount 52 may extend from the first insulating member 3 to a side of the heating element 1 facing away from the first viewing window 21 such that the fuse assembly 5 thereon is capable of facing the heating element 1.

In at least one embodiment, as shown in fig. 5, the frost prevention visual device includes both the temperature sensing assembly 4 and the fuse assembly 5, the temperature sensing assembly 4 and the fuse assembly 5 are disposed side by side, and the first heat insulation member 3 therebetween has the wire passing groove 33, and the wire outlet of the temperature sensing assembly 4 and the fuse assembly 5 can be realized through the wire passing groove 33.

In some embodiments, as shown in fig. 8, the frost-prevention visual device further includes a support housing 6, the first heat insulation member 3 is installed in the support housing 6, a second observation hole 611 disposed opposite to the first observation hole 32 is provided on a side of the support housing 6 facing the test chamber, a third observation hole 6211 disposed opposite to the first observation hole 32 is provided on a side of the support housing 6 facing the outside, and the second observation hole 611 and the third observation hole 6211 are correspondingly disposed therethrough. So that the person's line of sight can be seen through the third viewing aperture 6211, the viewing window assembly 2, the first viewing aperture 32 and the second viewing aperture 611 in that order.

The support housing 6 may be made of a relatively strong material to facilitate the secure mounting of the frost protection visual means. The material of the support housing 6 may be stainless steel, preferably 304 stainless steel, although other hard materials may be used.

In some embodiments, the support housing 6 comprises an inner shell 61 and an outer shell 62 connected to each other, wherein:

the inner shell 61 is connected to the first heat insulating member 3 and located on a side of the first heat insulating member 3 facing the test chamber, and the inner shell 61 may be connected to the first heat insulating member 3 by a connector such as a bolt, as shown in fig. 9, and the second observation hole 611 is provided in the inner shell 61;

the outer casing 62 is connected to the first heat insulating member 3 and located on the side of the first heat insulating member 3 facing the outside, and the inner casing 61 is specifically connected to the outer peripheral wall of the first heat insulating member 3 by a connecting member such as a bolt, as shown in fig. 10, and the third observation hole 6211 is provided in the outer casing 62.

Specifically, the inner case 61 has a plate-like structure, and the outer case 62 includes a side plate 621 and a surrounding plate 622 perpendicularly connected to the edge of the side plate 621, the side plate 621 covering the side of the first heat insulating member 3 facing the outside, the surrounding plate 622 covering the outer peripheral wall of the first heat insulating member 3 and being connected to the outer peripheral wall of the first heat insulating member 3 by a connection member such as a bolt.

In some embodiments, as shown in fig. 1, a second heat insulating member 7 is attached to the side of the housing 62 facing the first heat insulating member 3, the second heat insulating member 7 is provided with a second through hole 71 corresponding to the third observation hole 6211, the second through hole 71 can be used for the passage of vision, and the second heat insulating member 7 can perform the functions of heat insulation and heat preservation.

The second heat insulating member 7 may be a rubber-plastic sponge plate, and is adhered to the first heat insulating member 3, although other materials may be used for the second heat insulating member 7.

In some embodiments, as shown in fig. 11, the frost protection visual device further includes a baffle plate 8, where the baffle plate 8 is connected to the side of the support housing 6 facing the outside, the baffle plate 8 is disposed corresponding to the third observation hole 6211, and a fourth observation hole 81 for the line of sight to pass through is formed on the baffle plate 8. The fourth viewing aperture 81 is smaller in size than the third viewing aperture 6211 so that the baffle 8 can block the heating element 1 that the third viewing aperture 6211 is vented.

When the housing 62 is mounted on the first heat insulating member 3, as shown in fig. 12, the heating element 1 is exposed through the third observation hole 6211, and the baffle plate 8 can be used for shielding the heating element 1 penetrating out of the third observation hole 6211, so that the beauty of the frost prevention visual device is ensured, and meanwhile, the probability of the field personnel touching the heating element 1 by mistake is reduced.

An embodiment of the second aspect of the present utility model is to provide a test handler, which includes the frost prevention visual device.

The test handler provided in the second aspect of the present utility model has the anti-frost visual device provided in the embodiment of the first aspect of the present utility model, so that the test handler has all the advantages of the anti-frost visual device provided in the embodiment of the first aspect of the present utility model.

The test handler provided in the above embodiment is used as follows:

when the test separator works in a low-temperature state, the interior of the chamber is sprayed with the refrigerating gas, so that the temperature in the whole chamber is reduced to the target temperature (below 0 ℃). First, the first heat insulating member 3, the inner shell 61 and the second observation window 22 exchange heat with the refrigerant gas in the cavity in a convection way, the temperature is correspondingly reduced to a low temperature, and then the first observation window 21 and the heat insulating cushion block 23 conduct heat with the first heat insulating member 3 and the second observation window 22. When the temperature of the test sorting machine is reduced, the heating element 1 starts to generate heat, heat is conducted to the first observation window 21 contacted with the heating element, heat conduction caused by refrigerating gas is counteracted, meanwhile, the temperature of the first observation window 21 and the temperature of the heat insulation cushion block 23 are stably kept above the dew point temperature, the phenomenon of frosting and condensation on the surface of the heat insulation cushion block is avoided, the quality is improved, and hidden danger is avoided for enterprises.

In the above process, the first heat insulating member 3 can avoid the direct contact between the refrigerant gas in the cavity and the first observation window 21, i.e., isolate the heat convection between the refrigerant gas and the first observation window 21.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (10)

1. The utility model provides a visual device of frost prevention, its characterized in that, including heating element (1), observation window subassembly (2) and first thermal-insulated part (3), observation window subassembly (2) have towards external lateral surface, heating element (1) set up in lateral surface, mounting groove (31) have been seted up to one side of first thermal-insulated part (3), the opposite side seted up with first viewing aperture (32) of mounting groove (31) intercommunication, observation window subassembly (2) install in mounting groove (31), observation window subassembly (2) correspond first viewing aperture (32) set up.

2. The anti-frost visual device according to claim 1, wherein the heating element (1) is attached to an edge of an outer side surface of the observation window assembly (2), and the heating element (1) is provided with a first through hole (11) corresponding to the first observation hole (32).

3. The anti-frost visual device according to claim 1, further comprising a temperature sensing assembly (4) mounted on the first insulating member (3), the temperature sensing assembly (4) being adapted to detect the temperature of the heating element (1).

4. The anti-frost visual device according to claim 1, further comprising a fuse assembly (5) mounted on the first insulating member (3), the fuse assembly (5) being electrically connected to the heating element (1), the fuse assembly (5) being adapted to cancel an energized state of the heating element (1) when a heating temperature of the heating element (1) exceeds a preset temperature.

5. The frost prevention visual device according to claim 1, further comprising a support housing (6), wherein the first heat insulation member (3) is installed in the support housing (6), a second observation hole (611) is provided on a side of the support housing (6) facing the test cavity and is opposite to the first observation hole (32), a third observation hole (6211) is provided on a side of the support housing (6) facing the outside and is opposite to the first observation hole (32), and the second observation hole (611) and the third observation hole (6211) are correspondingly provided through.

6. The frost protection visual device according to claim 5, characterized in that the support housing (6) comprises an inner shell (61) and an outer shell (62) connected to each other, the inner shell (61) being connected to the first insulating member (3) and being located on the side of the first insulating member (3) facing the test chamber;

the shell (62) is connected with the first heat insulation component (3) and is positioned on the side of the first heat insulation component (3) facing the outside.

7. The frost prevention visual device according to claim 6, characterized in that a second heat insulating member (7) is attached to a side surface of the housing (62) facing the first heat insulating member (3), and the second heat insulating member (7) is provided with a second through hole (71) provided corresponding to the third observation hole (6211).

8. The anti-frost visual device according to claim 5, further comprising a baffle (8), the baffle (8) being connected to a side of the support housing (6) facing the outside, the baffle (8) being mounted at an edge of the third observation hole (6211) and being provided with a fourth observation hole (81), the baffle (8) being adapted to shield the heating element (1) that is penetrated out of the third observation hole (6211).

9. The frost prevention visual device according to claim 1, wherein the observation window assembly (2) comprises a first observation window (21), a second observation window (22) and a heat insulation cushion block (23) which are all installed in the installation groove (31), the first observation window (21) and the second observation window (22) are oppositely arranged, the heat insulation cushion block (23) is clamped between the first observation window and the second observation window (22), a fifth observation hole (231) is formed in the heat insulation cushion block (23), and one side of the first observation window (21) deviating from the second observation window (22) is the outer side surface.

10. A test handler comprising an anti-frost visual device according to any one of claims 1 to 9.