CN220399374U - Humidity sensor and steaming and baking box comprising same - Google Patents

Abstract

The utility model provides a humidity sensor and a steaming and baking box comprising the same, wherein the humidity sensor comprises an induction piece and a shell; the shell comprises a bottom shell and a convex shell, the induction piece is arranged in the shell, pins of the induction piece are led out through the bottom shell, the induction piece can be protected by the shell, and the possibility of damage of the humidity sensor when the humidity sensor faces to a high-temperature and high-humidity environment is reduced; the convex shell comprises a mounting part and a convex part, the mounting part is annular, the annular outer side of the mounting part is connected with the bottom shell, the convex part is connected with the annular inner side of the mounting part, the convex part protrudes towards the direction away from the bottom shell relative to the mounting part, an air hole is formed in the end part, away from the mounting part, of the convex part, and the sensing end of the sensing part is arranged on the inner side of the air hole; when the humidity sensor is installed, the protruding portion can penetrate into the cavity of the steaming and baking box, so that the sensing piece can sense the humidity of the cavity of the steaming and baking box more accurately.

Description

Humidity sensor and steaming and baking box comprising same

Technical Field

The utility model relates to the field of sensors, in particular to a humidity sensor and a steaming and baking box comprising the same.

Background

When food cooking is performed by using the steaming oven, in order to obtain an excellent food cooking effect, the humidity in the steaming oven cavity needs to be precisely controlled, and the premise is that the humidity in the steaming oven cavity needs to be detected in real time. The existing humidity detection scheme is mainly to directly expose the humidity sensitive element of the humidity sensor to the outside, and directly face the high-temperature environment, so that the moisture in the high-humidity environment can be condensed on the humidity sensitive element, the humidity sensitive element is easy to damage, and the detection result is inaccurate.

In order to solve the problem that the humidity sensitive element is easy to damage, technicians install the humidity sensitive element in an area avoiding direct blowing of water vapor, but the scheme cannot accurately detect the temperature in the steaming oven: if installed in the exhaust channel connected with the steaming and baking oven cavity, the detection result is not the humidity in the steaming and baking oven cavity but the humidity in the exhaust channel, and the detection result is still inaccurate; if the area without direct blowing of water and air in the steaming and baking oven cavity is selected to be installed, the limitation of the installation position is large, and considering the uneven humidity in the steaming and baking oven cavity, the humidity in the steaming and baking oven cavity is still difficult to accurately detect.

Disclosure of Invention

The utility model aims to solve the technical problems that a humidity sensor is easy to damage and the result of detecting humidity in a steaming and baking box cavity is inaccurate in the prior art, and provides the humidity sensor and the steaming and baking box comprising the same.

The utility model solves the technical problems by the following technical scheme:

a humidity sensor comprising a sensing member and a housing; the shell comprises a bottom shell and a convex shell, the induction piece is arranged in the shell, and pins of the induction piece are led out through the bottom shell; the convex shell comprises a mounting part and a convex part, the mounting part is annular, the annular outer side of the mounting part is connected with the bottom shell, the convex part is connected with the annular inner side of the mounting part, the convex part protrudes towards the direction away from the bottom shell relative to the mounting part, the end part of the convex part away from the mounting part is provided with an air hole, and the sensing end of the sensing part is arranged on the inner side of the air hole.

In the technical scheme, the humidity sensor comprises a sensing piece and a shell; the shell comprises a bottom shell and a convex shell, the induction piece is arranged in the shell, pins of the induction piece are led out through the bottom shell, the induction piece can be protected by the shell, and the possibility of damage of the humidity sensor when the humidity sensor faces to a high-temperature and high-humidity environment is reduced; the convex shell comprises a mounting part and a convex part, the mounting part is annular, the annular outer side of the mounting part is connected with the bottom shell, the convex part is connected with the annular inner side of the mounting part, the convex part protrudes towards the direction away from the bottom shell relative to the mounting part, an air hole is formed in the end part, away from the mounting part, of the convex part, and the sensing end of the sensing part is arranged on the inner side of the air hole; when the humidity sensor is installed, the protruding portion can penetrate into the cavity to be detected, so that the sensing piece can sense the humidity in the cavity to be detected more accurately.

Preferably, the humidity sensor further includes a first sealing member disposed between the bottom case and the protruding case, the first sealing member for sealing a gap between the bottom case and the protruding case.

In this technical scheme, humidity transducer is set up to still include first sealing member, and first sealing member sets up between drain pan and protrusion shell, and first sealing member is used for sealed drain pan and protrusion shell between the clearance, can avoid humidity to get into humidity transducer from the cavity through the clearance between drain pan and the protrusion shell, causes humidity transducer's damage.

Preferably, the first seal is also used to seal the mounting face of the housing.

In this technical scheme, the shell is installed in the mounting hole of the cavity wall of waiting to detect the cavity through its installation face, through setting up first sealing member to the installation face that still is used for sealed shell, can avoid moisture to pass to waiting to detect the cavity outside through the mounting hole from waiting to detect the cavity inside, improves the accurate control of waiting to detect the inside humidity of cavity, avoids waiting to detect other spare part outside the cavity and damage because of the moisture.

Preferably, the humidity sensor further comprises a fixing piece, the fixing piece is arranged on the inner side of the protruding shell, and the sensing piece is fixed in the protruding portion through the fixing piece.

In this technical scheme, through setting up humidity transducer to still including the mounting, the inboard of protrusion shell is located to the mounting, and the sensing piece passes through the mounting to be fixed in the bulge in, can fix the sensing piece better, avoid sensing piece not hard up time and shell bump and damage.

Preferably, the sensing piece comprises two TO caps, and the fixing piece comprises a first fixing piece, wherein the size of the first fixing piece is matched with the cross-sectional size of the convex shell; the first fixing piece is provided with a first through hole and a second through hole which are arranged relatively independently, the shape and the size of the first through hole and the second through hole are respectively matched with those of the two TO caps, and the two TO caps are respectively arranged in the first through hole and the second through hole in a penetrating mode.

In the technical scheme, the induction piece comprises two TO caps, and the fixing piece comprises a first fixing piece, wherein the size of the first fixing piece is matched with the cross section size of the protruding part; the first fixing piece is provided with a first through hole and a second through hole which are relatively and independently arranged, the shape and the size of the first through hole and the second through hole are respectively matched with those of the two TO caps, the two TO caps are respectively arranged in the first through hole and the second through hole in a penetrating mode, two induction pieces can be further respectively fixed in the protruding parts, and the induction pieces are prevented from being damaged due TO collision when loose.

Preferably, the humidity sensor includes two second sealing members, and the two second sealing members are respectively disposed between the first through hole and the through-set TO cap, and between the second through hole and the through-set TO cap.

In this technical scheme, through setting up humidity transducer TO including two second sealing members, two second sealing members are located respectively between first through-hole and the TO cap of wearing TO and between second through-hole and the TO cap of wearing TO, can further improve humidity transducer's degree of sealing, avoid leading TO the pin damage of sensing piece from the moisture that first through-hole or second through-hole got into.

Preferably, the protruding portion includes having along keeping away from the first boss and the second boss that have the fall of direction of installation department, first boss with the second boss sets up in succession, the gas pocket is located the second boss keep away from the tip of first boss, the mounting still includes the second stationary blade, the size of first stationary blade with the cross-sectional dimension phase-match of first boss, the size of second stationary blade with the cross-sectional dimension phase-match of second boss, have the third through-hole and the fourth through-hole of relative independent setting on the second stationary blade, the third through-hole with the shape and the size of fourth through-hole respectively with the shape and the size phase-match of two TO caps, two TO caps wear TO establish respectively in the third through-hole with in the fourth through-hole.

In the technical scheme, the protruding part is arranged to comprise a first boss and a second boss with fall along the direction far away from the installation part, the first boss and the second boss are arranged in a continuous mode, the air hole is formed in the end part, far away from the first boss, of the second boss, the fixing piece further comprises a second fixing piece, the size of the first fixing piece is matched with the cross-sectional size of the first boss, the size of the second fixing piece is matched with the cross-sectional size of the second boss, the protruding part can penetrate deeper into the cavity to be detected, meanwhile, the induction piece is further fixed, and damage caused by collision between looseness of the induction piece and the shell is avoided; the second stationary blade is last TO have the third through-hole and the fourth through-hole that relatively independent set up, and the shape and the size of third through-hole and fourth through-hole respectively with the shape and the size phase-match of two TO caps, two TO caps wear TO establish respectively in third through-hole and fourth through-hole, can further fix two induction pieces respectively, avoid induction piece not hard up and take place the striking each other TO cause the damage.

Preferably, the humidity sensor further includes a third sealing member disposed between the second fixing piece and the second boss.

In this technical scheme, through setting up humidity transducer to still including the third sealing member, the third sealing member is located between second stationary blade and the second boss, can further improve humidity transducer's degree of sealing, avoids leading to the pin damage of induction piece from the moisture that the clearance got into between second stationary blade and the second boss.

Preferably, an NTC chip is disposed in the TO cap, and the NTC chip is used for detecting humidity.

In the technical scheme, an NTC chip is arranged in the TO cap and used for detecting humidity; through external line connection pin, can make when the circular telegram, NTC chip and TO cap all can heat the aqueous vapor evaporation in the humidity transducer, further avoid the moisture TO lead TO the inductor TO damage.

Preferably, the material of the NTC chip is a high temperature resistant ceramic.

In the technical scheme, the NTC chip is made of high-temperature-resistant ceramic, so that the NTC chip is prevented from being damaged when the NTC chip and the TO cap are heated TO evaporate water vapor in the humidity sensor.

The utility model provides a steaming and baking box, its includes humidity transducer as above, have the mounting hole on steaming and baking box's the cavity wall, humidity transducer locates in the mounting hole, the protrusion shell keep away from the tip of drain pan stretches into steaming and baking box's cavity inboard.

In this technical scheme, through providing a steaming and baking box, it includes humidity transducer as described above, has the mounting hole on steaming and baking box's the cavity wall, and humidity transducer locates in the mounting hole, and the tip of keeping away from the drain pan of protrusion shell stretches into steaming and baking box's the cavity inboard, can avoid humidity transducer's damage when the humidity in the accurate measurement steaming and baking box cavity.

The utility model has the positive progress effects that:

by providing a humidity sensor comprising a sensing member and a housing; the shell comprises a bottom shell and a convex shell, the induction piece is arranged in the shell, pins of the induction piece are led out through the bottom shell, the induction piece can be protected by the shell, and the possibility of damage of the humidity sensor when the humidity sensor faces to a high-temperature and high-humidity environment is reduced; the convex shell comprises a mounting part and a convex part, the mounting part is annular, the annular outer side of the mounting part is connected with the bottom shell, the convex part is connected with the annular inner side of the mounting part, the convex part protrudes towards the direction away from the bottom shell relative to the mounting part, an air hole is formed in the end part, away from the mounting part, of the convex part, and the sensing end of the sensing part is arranged on the inner side of the air hole; when the humidity sensor is installed, the protruding portion can penetrate into the cavity to be detected, so that the sensing piece can sense the humidity in the cavity to be detected more accurately. Through providing a steaming and baking box, it includes humidity transducer as above, has the mounting hole on steaming and baking box's the cavity wall, and humidity transducer locates in the mounting hole, and the tip of keeping away from the drain pan of protrusion shell stretches into steaming and baking box's cavity inboard, can avoid humidity transducer's damage when the humidity in the accurate measurement steaming and baking box cavity.

Drawings

Fig. 1 is an exploded view of a humidity sensor according to an embodiment of the present utility model.

Fig. 2 is a schematic diagram illustrating a positional relationship between a humidity sensor and a cavity wall of a steaming and baking oven according to an embodiment of the present utility model.

Reference numerals illustrate:

TO cap 11

Bottom case 21

Outlet 211

Convex hull 22

Mounting portion 221

Projection 222

First boss 2221

Second boss 2222

Air hole 2223

First seal 3

Second seal 4

Third seal 5

First fixing piece 61

First through hole 611

Second through hole 612

Second fixing piece 62

Third through hole 621

Fourth through hole 622

Wall 7 of the steaming and baking oven

Mounting hole 71

Detailed Description

The present utility model will now be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments are shown.

As shown in fig. 1-2, the present embodiment provides a humidity sensor including a sensing member and a housing; the shell comprises a bottom shell 21 and a convex shell 22, the induction piece is arranged in the shell, and pins of the induction piece are led out through an outlet 211 on the bottom shell 21 and are connected with an external wire; the protrusion shell 22 includes a mounting portion 221 and a protrusion portion 222, the mounting portion 221 is annular, the annular outer side of the mounting portion 221 is connected with the bottom shell 21, the protrusion portion 222 is connected with the annular inner side of the mounting portion 221, the protrusion portion 222 protrudes in a direction a away from the bottom shell 21 relative to the mounting portion 221, an air hole 2223 is formed in an end portion, away from the mounting portion 221, of the protrusion portion 222, and an induction end of the induction piece is arranged on the inner side of the air hole 2223.

Thus, by providing a humidity sensor that includes a sensing member and a housing; the shell comprises a bottom shell 21 and a convex shell 22, the induction piece is arranged in the shell, pins of the induction piece are led out through an outlet 211 on the bottom shell 21 and are connected with an external wire, so that the induction piece is protected by the shell, and the possibility of damage of the humidity sensor when facing high-temperature and high-humidity environments is reduced; the protruding shell 22 comprises a mounting part 221 and a protruding part 222, the mounting part 221 is annular, the annular outer side of the mounting part 221 is connected with the bottom shell 21, the protruding part 222 is connected with the annular inner side of the mounting part 221, the protruding part 222 protrudes towards the direction A far away from the bottom shell 21 relative to the mounting part 221, an air hole 2223 is formed in the end part of the protruding part 222 far away from the mounting part 221, and the sensing end of the sensing piece is arranged on the inner side of the air hole 2223; when the humidity sensor is installed, the protrusion 222 can penetrate into the cavity of the steaming oven, so that the sensing piece can sense the humidity inside the steaming oven more accurately.

In this embodiment, the humidity sensor further includes a first sealing member 3, the first sealing member 3 being disposed between the bottom case 21 and the protruding case 22, the first sealing member 3 being for sealing a gap between the bottom case 21 and the protruding case 22.

In this way, the humidity sensor is configured to further include the first sealing member 3, the first sealing member 3 is disposed between the bottom case 21 and the protruding case 22, the first sealing member 3 is used to seal the gap between the bottom case 21 and the protruding case 22, and it is possible to prevent moisture from entering the humidity sensor from the inside of the cavity through the gap between the bottom case 21 and the protruding case 22, causing damage to the humidity sensor.

In this embodiment, the first seal 3 also serves to seal the mounting face of the housing, by which the housing is mounted in the mounting hole 71 of the cavity wall 7 of the steaming oven.

Thus, by setting the first sealing member 3 to be used for sealing the mounting surface of the housing, moisture can be prevented from being transmitted from the cavity of the steaming oven to the outside of the cavity of the steaming oven through the mounting hole 71, the accurate control of the internal humidity of the steaming oven is improved, and other parts outside the cavity of the steaming oven are prevented from being damaged due to the moisture.

In this embodiment, the humidity sensor further includes a fixing member disposed on the inner side of the protruding shell 22, and the sensing member is fixed in the protruding portion 222 through the fixing member.

Like this, through setting up humidity transducer to still including the mounting, the inboard of protrusion shell 22 is located to the mounting, and the sensing piece passes through the mounting to be fixed in protrusion 222, can fix the sensing piece better, avoid sensing piece not hard up when bumping with the shell and damage.

In this embodiment, the sensing element comprises two TO caps 11 and the fixing element comprises a first fixing piece 61, the size of the first fixing piece 61 being matched with the cross-sectional size of the protruding casing 22; the first fixing piece 61 is provided with a first through hole 611 and a second through hole 612 which are arranged relatively independently, the shapes and the sizes of the first through hole 611 and the second through hole 612 are respectively matched with those of the two TO caps 11, and the two TO caps 11 are respectively arranged in the first through hole 611 and the second through hole 612 in a penetrating mode.

Thus, by providing the sensing member TO include two TO caps 11, the mounting member includes a first mounting tab 61, the first mounting tab 61 being sized TO match the cross-sectional dimensions of the boss 222; the first fixing piece 61 is provided with a first through hole 611 and a second through hole 612 which are relatively and independently arranged, the shape and the size of the first through hole 611 and the second through hole 612 are respectively matched with those of the two TO caps 11, the two TO caps 11 are respectively arranged in the first through hole 611 and the second through hole 612 in a penetrating manner, and two induction pieces can be further respectively fixed in the protruding part 222, so that the induction pieces are prevented from being damaged due TO collision when loose.

In this embodiment, the humidity sensor includes two second sealing members 4, and the two second sealing members 4 are respectively provided between the first through hole 611 and the through-going cap 11, and between the second through hole 612 and the through-going cap 11.

In this way, by providing the humidity sensor TO include two second sealing members 4, the two second sealing members 4 being respectively provided between the first through hole 611 and the through-put TO cap 11, and between the second through hole 612 and the through-put TO cap 11, it is possible TO further improve the sealing degree of the humidity sensor, avoiding the damage TO the pins of the sensing member caused by the moisture entering from the first through hole 611 or the second through hole 612.

In this embodiment, the protruding portion 222 includes a first boss 2221 and a second boss 2222 having a drop in a direction a away from the mounting portion 221, the first boss 2221 and the second boss 2222 are continuously disposed, the air hole 2223 is disposed at an end portion of the second boss 2222 away from the first boss 2221, the fixing member further includes a second fixing piece 62, the size of the first fixing piece 61 is matched with the cross-sectional size of the first boss 2221, the size of the second fixing piece 62 is matched with the cross-sectional size of the second boss 2222, the second fixing piece 62 is provided with a third through hole 621 and a fourth through hole 622 which are relatively independently disposed, the shapes and sizes of the third through hole 621 and the fourth through hole 622 are respectively matched with the shapes and sizes of the two TO caps 11, and the two TO caps 11 are respectively inserted into the third through hole 621 and the fourth through hole 622.

In this way, the protruding portion 222 is configured to include the first boss 2221 and the second boss 2222 with a drop in the direction a away from the mounting portion 221, where the first boss 2221 and the second boss 2222 are sequentially disposed, the air hole 2223 is disposed at an end of the second boss 2222 away from the first boss 2221, the fixing piece further includes the second fixing piece 62, the size of the first fixing piece 61 is matched with the cross-sectional size of the first boss 2221, and the size of the second fixing piece 62 is matched with the cross-sectional size of the second boss 2222, so that the protruding portion 222 can be deeper into the cavity of the steaming oven, and meanwhile, the sensing piece is further fixed, so as to avoid damage caused by the loosening of the sensing piece and the impact of the housing; the second fixing piece 62 is provided with a third through hole 621 and a fourth through hole 622 which are relatively and independently arranged, the shapes and the sizes of the third through hole 621 and the fourth through hole 622 are respectively matched with those of the two TO caps 11, the two TO caps 11 are respectively arranged in the third through hole 621 and the fourth through hole 622 in a penetrating mode, two induction pieces can be further fixed respectively, and damage caused by loosening of the induction pieces and collision of the induction pieces is avoided. Of course, in other embodiments, the humidity sensor may also include other structures that enable the protrusion to penetrate deeper into the cavity of the steaming oven.

In this embodiment, the humidity sensor further includes a third sealing member 5, and the third sealing member 5 is disposed between the second fixing piece 62 and the second boss 2222.

Thus, by setting the humidity sensor to further include the third sealing member 5, the third sealing member 5 is disposed between the second fixing piece 62 and the second boss 2222, it is possible to further improve the sealing degree of the humidity sensor, and prevent the pin of the sensing member from being damaged by moisture entering from the gap between the second fixing piece 62 and the second boss 2222.

In this embodiment, an NTC chip (not shown in the figure) is disposed in the TO cap 11, and the NTC chip is used for humidity detection.

Thus, by disposing an NTC chip inside the TO cap 11, the NTC chip is used for humidity detection; through external line connection pin, can make when the circular telegram, NTC chip and TO cap 11 all can heat the aqueous vapor evaporation in the humidity transducer, further avoid the moisture TO lead TO the inductor TO damage.

In this embodiment, the NTC chip is made of a high temperature resistant ceramic.

In this way, by setting the material of the NTC chip TO be a high temperature resistant ceramic, it is possible TO avoid damage TO the NTC chip when the NTC chip and TO cap 11 are heated such that moisture in the humidity sensor evaporates.

Referring back to fig. 2, the present embodiment further provides a steaming and baking oven, which includes the humidity sensor described above, wherein the cavity wall 7 of the steaming and baking oven is provided with a mounting hole 71, the humidity sensor is disposed in the mounting hole 71, and the end of the protruding shell 22 far from the bottom shell 21 extends into the inner side of the cavity of the steaming and baking oven.

Thus, by providing a steaming and baking oven comprising the humidity sensor as described above, the mounting hole 71 is formed in the cavity wall 7 of the steaming and baking oven, the humidity sensor is arranged in the mounting hole 71, and the end of the convex shell 22 far away from the bottom shell 21 stretches into the inner side of the cavity of the steaming and baking oven, so that the damage of the humidity sensor can be avoided while the humidity in the cavity of the steaming and baking oven is accurately measured.

While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the utility model is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the utility model, but such changes and modifications fall within the scope of the utility model.

Claims (11)

1. A humidity sensor comprising a sensing member and a housing; the shell comprises a bottom shell and a convex shell, the induction piece is arranged in the shell, and pins of the induction piece are led out through the bottom shell; the convex shell comprises a mounting part and a convex part, the mounting part is annular, the annular outer side of the mounting part is connected with the bottom shell, the convex part is connected with the annular inner side of the mounting part, the convex part protrudes towards the direction away from the bottom shell relative to the mounting part, the end part of the convex part away from the mounting part is provided with an air hole, and the sensing end of the sensing part is arranged on the inner side of the air hole.

2. The humidity sensor of claim 1 further comprising a first seal disposed between the bottom shell and the protruding shell, the first seal for sealing a gap between the bottom shell and the protruding shell.

3. The humidity sensor of claim 2 wherein said first seal is further for sealing a mounting surface of said housing.

4. The humidity sensor of claim 1 further comprising a securing member disposed inside the protruding shell, the sensing member being secured within the protruding portion by the securing member.

5. The humidity sensor of claim 4 wherein said sensing member comprises two TO caps and said securing member comprises a first securing tab sized TO match a cross-sectional dimension of said tab; the first fixing piece is provided with a first through hole and a second through hole which are arranged relatively independently, the shape and the size of the first through hole and the second through hole are respectively matched with those of the two TO caps, and the two TO caps are respectively arranged in the first through hole and the second through hole in a penetrating mode.

6. The humidity sensor of claim 5 wherein said humidity sensor comprises two second seals disposed between said first through hole and said through going cap and between said second through hole and said through going cap, respectively.

7. The humidity sensor of claim 5 wherein said projection comprises a first boss and a second boss having a drop in a direction away from said mounting portion, said first boss and said second boss being disposed in succession, said air hole being disposed at an end of said second boss away from said first boss, said fixture further comprising a second stator having a size matching a cross-sectional size of said first boss, a size matching a cross-sectional size of said second boss, said second stator having a third through hole and a fourth through hole disposed in a relatively independent manner, said third through hole and said fourth through hole having a shape and a size matching a shape and a size of said two TO caps, respectively, said two TO caps being disposed in said third through hole and said fourth through hole in a penetrating manner, respectively.

8. The humidity sensor of claim 7 further comprising a third seal disposed between said second stator and said second boss.

9. The humidity sensor of claim 5 wherein an NTC chip is disposed within the TO cap, the NTC chip being for humidity detection.

10. The humidity sensor of claim 9 wherein the material of the NTC chip is a high temperature resistant ceramic.

11. A steaming and baking box, characterized in that the steaming and baking box comprises the humidity sensor as claimed in any one of claims 1-10, wherein a mounting hole is formed in the wall of a cavity of the steaming and baking box, the humidity sensor is arranged in the mounting hole, and the end part, far away from the bottom shell, of the protruding shell extends into the inner side of the cavity of the steaming and baking box.