CN115752788A - Handheld Temperature Probes for Food Cooking - Google Patents

Abstract

The application discloses a hand-held temperature probe for food cooking, which includes a probe assembly, the probe assembly includes a tube body, a thermocouple and a first heat-conducting material, the tube body has a housing chamber; a part of the thermocouple is located in the housing In the cavity, the working end of the thermocouple penetrates and is fixedly arranged on the tube body, and at least part of the working end is exposed from the tube body to detect the temperature; the first heat-conducting material is filled in the housing cavity, and the first heat-conducting material is at least Cover the joint between the working end and the pipe body. The hand-held temperature probe used for food cooking of the present application has a short response time and accurate temperature detection results.

Description

Handheld Temperature Probes for Food Cooking

technical field

The invention relates to the technical field of temperature sensors, in particular to a hand-held temperature probe for food cooking.

Background technique

With the advancement of science and technology and the improvement of people's requirements for the taste and nutrition of food materials, people expect more precise control of the temperature elements in the cooking process, in some embodiments, more precise control of the temperature of food materials and the temperature of water for heating food, etc., therefore A hand-held temperature detection device applied to food cooking came into being.

In the temperature detection device, the temperature probe is used as the temperature measuring element to measure the temperature, and the control unit can convert the temperature signal into a thermal electromotive force signal, and then obtain the temperature detection result, thereby realizing the temperature detection.

As shown in Figure 1, Figure 1 is a structural schematic diagram of an existing temperature probe 20, in order to reduce the response time of the temperature probe 20, in the structure of this temperature probe 20, between the thermocouple 22 and the tube body 21 The gap is filled with thermally conductive material 23, but the working end 221 of the thermocouple 22 in the tube body 21 is still a certain distance from the object to be measured, which will affect the response time of the temperature probe 20. Therefore, when making a fast-response hand-held temperature probe, the response time of the temperature probe with this structure is relatively long, and it is difficult to meet the requirement of fast response of the temperature probe.

Contents of the invention

The present application provides a hand-held temperature probe for food cooking, which can solve the problem of long response time of the temperature probe.

In order to solve the above-mentioned technical problems, a technical solution provided by the present application is to provide a hand-held temperature probe for food cooking, which includes a probe assembly, and the probe assembly includes a tube body, a thermocouple, and a first heat-conducting material. The pipe body has a housing chamber; a part of the thermocouple is arranged in the housing chamber, and the working end of the thermocouple penetrates and is fixedly arranged on the pipe body, and at least part of the working end is exposed from the pipe body for temperature detection; the first heat-conducting material is filled In the accommodation chamber, the first heat-conducting material at least covers the connection between the working end and the pipe body.

In one embodiment, the first heat-conducting material is filled in the containing cavity by a centrifugal process.

In one embodiment, the accommodating cavity includes a first cavity extending backward from its front end, the thermocouple passes through the first cavity, and the working end of the thermocouple penetrates and is fixedly arranged on the cavity wall of the first cavity, The space between the cavity wall of the first cavity and the thermocouple is filled with the first heat-conducting material, and the radial gap a between the thermocouple and the cavity wall of the first cavity is <3 mm.

In one embodiment, 0.1mm≤a≤1mm.

In one embodiment, the accommodating cavity includes a second cavity communicated with the first cavity, the thermocouple also passes through the second cavity, and the radial gap b between the thermocouple and the wall of the second cavity ≥a.

In one embodiment, the first heat conducting material is also arranged on the cavity wall of the second cavity.

In one embodiment, the first thermally conductive material fills the gap between the cavity wall of the first cavity and the thermocouple.

In one embodiment, the first heat-conducting material is heat-conducting silicone grease or copper powder.

In one embodiment, the probe assembly further includes a second thermally conductive material, the second thermally conductive material is filled between the cavity wall of the second cavity and the thermocouple, and the second thermally conductive material is used to seal the first thermally conductive material.

In one embodiment, the first heat conduction material is copper powder, and the second heat conduction material is heat conduction silicone grease.

In one embodiment, the handheld temperature probe for food cooking further includes a main body, the probe assembly is connected to the main body, and the probe assembly is electrically connected to the control unit in the main body.

Another technical solution provided by the present application is to provide a hand-held temperature probe for food cooking, including a probe assembly. The probe assembly includes a tube body, a thermocouple, and a first thermally conductive material. The tube body has a housing cavity, a part of the thermocouple is disposed in the housing cavity, the first thermally conductive material is filled in the housing cavity, and the first thermally conductive material at least covers the thermocouple The working end of the first heat-conducting material is filled in the accommodating cavity through a centrifugal process.

In one embodiment, the accommodating cavity includes a first cavity extending backward from its front end, a part of the thermocouple is disposed in the first cavity, and a first thermal conductor is filled between the cavity wall of the first cavity and the thermocouple. Material, the radial gap a between the thermocouple and the cavity wall of the first cavity is <3mm.

In one embodiment, the accommodating cavity includes a second cavity communicating with the first cavity, the thermocouple passes through the second cavity, and the radial gap between the thermocouple and the wall of the second cavity b≥ a.

In one embodiment, the first heat conducting material is also arranged on the cavity wall of the second cavity.

In the hand-held temperature probe used for food cooking provided by the present application, the probe assembly of the temperature probe includes a tube body, a thermocouple and a first heat-conducting material. The tube body has a housing cavity, a part of the thermocouple is arranged in the housing cavity, the working end of the thermocouple is penetrated and fixedly arranged on the tube body, and at least part of the working end of the thermocouple is exposed from the tube body to detect the temperature, thus , when the temperature probe is in use, the working end of the thermocouple exposed from the tube body can directly contact the object to be measured. Compared with the existing structure in which the working end contacts the object to be measured indirectly, the temperature probe’s Response times are shorter. The first heat-conducting material is filled in the housing cavity, and the first heat-conducting material covers at least the joint between the working end and the pipe body. Since the temperature of the air rises slowly, especially the air that is not easy to flow in the pipe body is a poor conductor of heat, the first The heat-conducting material covering the connection between the working end and the pipe body can replace the air near the connection with a heat-conducting material with good thermal conductivity, which can prevent the air near the connection from absorbing heat and cause the temperature probe to reach the target temperature. The response time of the temperature probe can be further reduced.

In particular, in one embodiment, the first heat-conducting material is filled in the accommodating cavity through a centrifugal process. The method of filling the first heat-conducting material with the centrifugal process requires a small gap size between the tube body and the thermocouple, and even a small gap can be filled with the first heat-conducting material by centrifugal means, so the tube body can be designed more Thin, more conducive to the miniaturization design of the handheld temperature probe. And because the process of centrifugally filling the heat-conducting material is not affected by the gap between the tube body and the thermocouple, the operation process has little influence on the thermocouple. In addition, the first heat conduction material centrifuged by the centrifugal process has few or no air bubbles, and the surface is relatively smooth, which can make the heat conduction effect better.

Description of drawings

Fig. 1 is the structural representation of a kind of existing temperature probe provided by the present application;

Fig. 2 is the block diagram of a kind of temperature probe provided by the application;

Figure 3 is a schematic structural view of the probe assembly provided by the present application;

Fig. 4 is the motion roadmap of the first heat-conducting material in the probe assembly provided by the present application;

FIG. 5 is another schematic structural view of the probe assembly provided by the present application;

FIG. 6 is another structural schematic diagram of the probe assembly provided by the present application.

Detailed ways

The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings. Wherein, similar elements in different implementations adopt associated similar element numbers. In the following implementation manners, many details are described for better understanding of the present application. However, those skilled in the art can readily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the application are not shown or described in the description, this is to avoid the core part of the application being overwhelmed by too many descriptions, and for those skilled in the art, it is necessary to describe these operations in detail Relevant operations are not necessary, and they can fully understand the relevant operations according to the description in the specification and general technical knowledge in the field.

In addition, the characteristics, operations or characteristics described in the specification can be combined in any appropriate manner to form various embodiments. At the same time, the steps or actions in the method description can also be exchanged or adjusted in a manner obvious to those skilled in the art. Therefore, various sequences in the specification and drawings are only for clearly describing a certain embodiment, and do not mean a necessary sequence, unless otherwise stated that a certain sequence must be followed.

The serial numbers assigned to components in this document, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any sequence or technical meaning. The "connection" and "connection" mentioned in this application all include direct and indirect connection (connection) unless otherwise specified.

In order to be able to detect the temperature of the food or food processing medium (such as water) during the cooking process, and for the convenience of use, the present application provides a hand-held temperature probe 10 (hereinafter referred to as the temperature probe 10 ) for food cooking. As shown in FIG. 2 , FIG. 2 is a schematic structural diagram of a temperature probe 10 provided in the present application.

The temperature probe 10 includes a probe assembly 11 and a main body 12 , the probe assembly 11 is connected to the main body 12 . Wherein, the probe assembly 11 can be directly or indirectly connected to the main body 12, and the probe assembly 11 can be fixedly connected to the main body 12, such as clamping, bonding, screwing and the like. The probe assembly 11 can also be movably connected to the main body 12, such as a rotational connection, or the probe assembly 11 can move relative to the main body 12 in a plane, and the like. The probe assembly 11 and the main body 12 can also be connected in a detachable manner, so that the probe assembly 11 can be replaced directly when the probe assembly 11 needs to be overhauled or replaced. The connection method between the probe assembly 11 and the main body 12 may also be other connection methods conceivable by those skilled in the art, and is not limited to the connection method described above.

In one embodiment, the main body 12 includes a control unit, which may be a circuit board with a control circuit, or other structures or circuits capable of controlling, or a combination of both. The control unit can be used to control the opening and closing of the hand-held temperature probe 10, and the control unit is also electrically connected to the probe assembly 11, and the signal detected by the probe assembly 11 can be transmitted to the control unit, and the control unit performs signal processing. processing, and then obtain the result of temperature detection, so that the temperature probe 10 realizes the detection of temperature.

Please refer to FIG. 3 , which is a schematic structural diagram of the probe assembly 11 provided in the present application. In one embodiment, the probe assembly 11 includes a tube body 111 , a thermocouple 112 and a first heat-conducting material 113 .

Wherein, the tube body 111 is a metal tube body with a cavity 1111 for protecting the thermocouple 112 from being damaged. The tube body 111 can be made of a metal with a high thermal conductivity, such as platinum, aluminum, copper, nickel, iron, stainless steel and other metals or alloys. In order to make the measured temperature more accurate, the tube wall thickness of the tube body 111 can be reduced, and the tube body 111 with a smaller inner diameter can be used, thereby improving the hysteresis of the thermocouple 112 . In the embodiment of FIG. 3 , the tube wall thickness of the tube body 111 is 0.2mm, and in other embodiments, other tube wall thicknesses are also possible.

The thermocouple 112 may include a first heat conducting wire 1121 and a second heat conducting wire 1122 joined at both ends to form a loop, and the thermocouple 112 has a working end 113a (hot end) and a reference end (cold end). When there is a temperature difference between the working end 113a and the reference end, a thermoelectric potential will be generated in the circuit, and the reference end of the thermocouple 112 is electrically connected to the control power supply, so that the control unit can detect the temperature difference signal, and obtain the temperature detection result by processing the temperature difference signal .

In addition, the thermocouple 112 may also include a first insulating sheath 1123 and a second insulating sheath 1124 respectively sheathed on the first heat conducting wire 1121 and the second heat conducting wire 1122, and the working end 113a and the reference end of the thermocouple 112 are arranged on Outside the first insulating sleeve 1123 and the second insulating sleeve 1124 . By setting the first insulating sleeve 1123 and the second insulating sleeve 1124, the first insulating sleeve 1123 and the second insulating sleeve 1124 can prevent the first heat conducting wire 1121 and the second heat conducting wire 1122 from contacting each other, and can prevent the first heat conducting wire 1121 and the second heat conducting wire 1122 are damaged, which increases the service life of the thermocouple 112 .

A part of the thermocouple 112 is arranged in the housing cavity 1111, the working end 113a of the thermocouple 112 penetrates and is fixedly arranged on the tube body 111, at least part of the working end 113a is exposed from the tube body 111, so that the working end 113a can be used for Check the temperature.

Specifically, the extending direction of the thermocouple 112 and the extending direction of the accommodating cavity 1111 may be the same or substantially the same. The central axis of the thermocouple 112 may coincide or substantially coincide with the central axis of the containing cavity 1111 , or the central axis of the thermocouple 112 may be offset from the central axis of the containing cavity 1111 .

In one embodiment, the parts of the thermocouple 112 except the working end 113a are arranged in the receiving chamber 1111, specifically, the first insulating sleeve 1123 and the second insulating sleeve 1124 of the thermocouple 112 are arranged in the receiving chamber 111, A part of the first heat conduction wire 1121, a part of the second heat conduction wire 1122 and the reference end are all set in the housing cavity 111, and the working end 113a is set on the tube body 111 and penetrates the tube body 111, so that at least part of the working end 113a is The tube body 111 is exposed, and the reference terminal in the tube body 111 can be electrically connected to the control unit by setting a lead wire. In other embodiments, the arrangement of the thermocouple 112 in the receiving cavity 1111 is not limited to the above-mentioned structure, and may also be other structures.

The fixing method of the working end 113a of the thermocouple 112 and the pipe body 111 can be welding, bonding, etc., preferably, the working end 113a and the pipe body 111 are fixed by welding, and the working end 113a and the pipe body are fixed by welding. The stability of the body 111 is better, and the operation is convenient.

At least part of the working end 113a is exposed from the tube body 111, that is, a part of the working end 113a can be exposed from the tube body 111, and the other part is embedded in the tube wall of the tube body 111; exposed, the second part is embedded in the tube wall of the tube body 111 , and the third part is located in the accommodating cavity 1111 ; or the entire working end 113 a is exposed from the tube body 111 . Wherein, exposed may mean that at least part of the working end 113a is exposed from the tube body 111 and does not protrude from the tube body 111 , or it may mean that at least part of the working end 113a protrudes from the tube body 111 and is exposed.

Because in the existing working end 221 of thermocouple 22 and the object to be measured ( FIG. 1 ), there is at least the thickness of the tube body 21 and the distance of the heat-conducting material 23 between the working end 221 of the thermocouple 22 and the object to be measured, so even The pipe body 21 and the heat conduction material 23 use materials with high thermal conductivity, which cannot avoid the temperature hysteresis between the working end 221 and the object to be measured, so that the response time of the temperature probe 20 is longer.

While the temperature probe 10 provided by the present application is in use, the working end 113a of the thermocouple 112 exposed from the tube body 111 can directly contact the object to be measured, compared with the indirect contact between the existing working end 113a and the object to be measured With the structure, the response time of the temperature probe 10 is shorter, which effectively improves the problem of temperature hysteresis of the temperature probe 10 .

The first heat-conducting material 113 is filled in the receiving cavity 1111 , and the first heat-conducting material 113 at least covers the joint between the working end 113 a and the tube body 111 . When the working end 113 a and the tube body 111 are connected by welding, the first heat conducting material 113 at least covers the welding spot between the working end 113 a and the tube body 111 .

Because the temperature of the air rises slowly, especially the air that is not easy to flow in the pipe body 111 is a poor conductor of heat. The first heat-conducting material 113 covers the joint between the working tube and the pipe body 111 and can replace the air near the joint with thermal conductivity. A good heat-conducting material can prevent the air near the joint from absorbing heat and cause the response time of the temperature probe 10 to reach the target temperature to be prolonged, thereby further reducing the response time of the temperature probe 10 .

Wherein, the first heat conducting material 113 may be a material with high thermal conductivity, such as heat conducting silicone grease or copper powder. Preferably, the thermal conductivity of the first heat-conducting material 113 is greater than that of the pipe body 111 , which may be selected to be more than 10 times. The greater the thermal conductivity of the first heat-conducting material 113 relative to the thermal conductivity of the tube body 111 , the smaller the temperature difference between inside and outside of the tube body 111 , and the shorter the response time.

It should be noted that, taking the way that the working end 113a of the thermocouple 112 is welded to the pipe body 111 as an example, when the probe assembly 11 is actually installed, the thermocouple 112 needs to be welded on the pipe body 111 first, and then the second A heat-conducting material 113 is filled in the containing chamber 1111 , but the first heat-conducting material 113 cannot be filled in the containing chamber 1111 first, and then the thermocouple 112 and the tube body 111 are welded. This is because if the first heat-conducting material 113 is pre-embedded in the pipe body, the first heat-conducting material 113 will cover the pipe wall of the housing chamber 1111, and the thermocouple 112 needs to be inserted into the first heat-conducting material 113 to contact and weld with the pipe body 111. When the couple 112 and the pipe body 111 are welded, the first heat-conducting material 113 remains on the surfaces of both, which will affect the effect of the welding process and cause the problem of welding failure.

After the thermocouple 112 is welded on the tube body, in some embodiments, the first heat-conducting material 113 can be directly injected into the housing chamber 1111 through a syringe, but the method of filling the first heat-conducting material 113 must ensure that the tube body The gap between 111 and thermocouple 112 is greater than the outer diameter of the injection end of the syringe, and the ratio of the gap distance between the tube body 111 and thermocouple 112 to the outer diameter of the injection end is as large as possible, so as to have a larger operating space The injection end is inserted into the gap to inject the first heat-conducting material 113 . If the operating space of the syringe is too narrow, on the one hand, it is not conducive to the operation of the operator, and on the other hand, the thermocouple 112 may be damaged.

Enlarging the ratio of the gap distance between the tube body 111 and the thermocouple 112 to the outer diameter of the syringe can be realized by enlarging the tube diameter of the tube body 111 or using a syringe with a small tube diameter. However, if a syringe with a small diameter is used, it is difficult to extrude the viscous heat-conducting material from the syringe; if a method of enlarging the diameter of the pipe body is used, the hand-held temperature probe 10 will not be able to achieve a more miniaturized design. At present, in order to carry, take and store the handheld temperature probe 10 more conveniently, the thinning and miniaturization of the handheld temperature probe 10 is particularly important.

In order to make the inner diameter of the pipe body 111 thinner and to smoothly fill the first heat-conducting material 113 in the presence of the thermocouple 112 , the present application provides the following technical solutions to solve the above problems.

In some embodiments, please refer to FIG. 3 , the receiving cavity 1111 includes a first cavity 1112 extending backward from its front end (as shown in the left end in the figure). In this application, the front end is the end close to the working end 113a of the thermocouple 112 , the rear end is the end close to the reference end of the thermocouple 112 .

The thermocouple 112 is installed through the first cavity 1112 , the working end 113 a of the thermocouple 112 passes through the cavity wall of the first cavity 1112 , and the working end 113 a of the thermocouple 112 is fixedly arranged on the cavity wall of the first cavity 1112 . The radial gap between the thermocouple 112 and the cavity wall of the first cavity 1112 a<3mm, preferably a<2mm, in some embodiments, 0.1≤a≤1mm, for example, it can be 0.2mm, 0.375mm, 0.7mm, 1mm, etc. That is, the position of the first cavity 1112 can be determined by the radial gap a<3 mm.

For example, in the embodiment of Fig. 3, the radial gap a of the accommodation chamber 1111 from its front end c to d satisfies the condition of a<3mm, and the radial clearance a of the accommodation chamber 1111 from d to the rear does not satisfy a<3mm condition, the first cavity 1112 is the space of the accommodating cavity 1111 from c to d.

By setting the radial gap a between the thermocouple 112 and the cavity wall of the first cavity 1112 within a certain range, the volume of the hand-held temperature probe 10 is smaller, which is beneficial to the miniaturization of the hand-held temperature probe 10 change.

It should be noted that the radial gap between the thermocouple 112 and the wall of the first cavity 1112 may be the radial gap between the outer wall of the first thermal wire 1121 or the second thermal wire 1122 and the wall of the first cavity 1112 The gap may also be a radial gap between the outer wall of the insulating sheath 1123 outside the heat conducting wire and the wall of the first cavity 1112 .

The shape of the first cavity 1112 may be a regular shape, such as a cylinder, a prism, etc.; the shape of the first cavity 1112 may also be an irregular shape. In one embodiment, as shown in FIG. 3 , the first cavity 1112 includes a first cavity 1112a and a second cavity 1112b, the first cavity 1112a is located at the front end of the first cavity 1112, and the second cavity 1112b is located at The rear cavity of the first cavity 1112 is communicated with the first cavity 1112a and the second cavity 1112b. Wherein, the shape of the second cavity 1112b is a cylinder, such as a cylinder, a prism, etc.; the shape of the first cavity 1112a is a cone or a hemisphere. In the embodiment of FIG. 3 , the shape of the second cavity 1112b is a cylinder, and the shape of the first cavity 1112a is a cone.

The working end 113a of the thermocouple 112 can penetrate and be fixedly arranged on the cavity wall at the apex of the first cavity 1112a. For example, in the embodiment of FIG. 3, the thermocouple 112 passes through the first cavity 1112a and the second cavity. cavity 1112b, and the working end 113a of the thermocouple 112 penetrates and is fixedly arranged on the cavity wall at the apex of the first cavity 1112a of the cone. Certainly, in some embodiments, the working end 113a of the thermocouple 112 can also be penetrated and fixedly arranged on the side cavity wall of the first cavity 1112a, or, the working end 113a of the thermocouple 112 can also be penetrated and fixedly arranged on the side cavity wall of the first cavity 1112a. On the side cavity wall of the second cavity 1112b.

In other embodiments, the shape of the first cavity 1112 may also be other shapes, not limited to the above-mentioned several shapes.

In one embodiment, as shown in FIG. 3, in addition to the first cavity 1112, the receiving cavity 1111 also includes a second cavity 1113, the first cavity 1112 communicates with the second cavity 1113, and the second cavity 1113 The front end is connected with the rear end of the first cavity 1112 .

The thermocouple 112 also passes through the second cavity 1113, the radial gap between the thermocouple 112 and the cavity wall of the second cavity 1113 b≥a, in some embodiments, b≥3mm or b≥2mm, b The size can be determined according to the size of a, or according to the actual situation of the heat-conducting material. In the embodiment of FIG. 3 , the second cavity 1113 is the space from d to the rear end of the receiving cavity 1111 from the receiving cavity 1111 . The radial gap between the thermocouple 112 and the wall of the second cavity 1113 can be the radial gap between the outer wall of the first heat conduction wire 1121 or the second heat conduction wire 1122 and the wall of the second cavity 1113, or it can be The radial gap between the outer wall of the insulating sheath 1123 outside the heat conducting wire and the wall of the second cavity 1113 .

In one embodiment, the first heat-conducting material 113 may be filled in the first cavity 1112 of the containing cavity 1111 through a centrifugal process. Please refer to FIG. 3 and FIG. 4 , the direction of the arrow in FIG. 4 indicates the moving direction of the first heat-conducting material 113 during the centrifugation process. After the thermocouple 112 and the first cavity 1112 are fixed, the first heat-conducting material 113 can be first injected into the second cavity 1113 with a larger radial gap b through the syringe, because the second cavity 1113 and the thermocouple 112 The radial gap is large, and a syringe with a large diameter can be used to inject the first heat-conducting material 113 into the second cavity 1113. The syringe can operate in a large space, and the operation is less difficult, and the influence on the thermocouple 112 during operation smaller.

After injecting the first heat-conducting material 113 into the second cavity 1113 by the syringe, the first heat-conducting material 113 in the second cavity 1113 is moved to the first cavity 1112 by centrifugal force through a centrifugal process, so that the first heat-conducting material 113 At least cover the junction of the working end 113a of the thermocouple 112 and the pipe wall of the first cavity 1112 .

In actual operation, before putting the tube body 111 into the centrifuge, inject the first heat-conducting material 113 into the second cavity 1113 of the accommodating cavity 1111 with a syringe, and then put the tube body 111 into the centrifuge. After setting the speed, time or power of the centrifuge, start the centrifuge for centrifugation. During the centrifugation, the first heat-conducting material 113 moves from the second cavity 1113 to the first cavity 1112, so that the cavity of the first cavity 1112 The first heat conducting material 113 is filled between the wall and the thermocouple 22 .

The first heat-conducting material 113 is filled in the first cavity 1112 by a centrifugal process, and the first heat-conducting material 1113 is filled into the first cavity 1112 by centrifugal force without extending the syringe into the first cavity 1112 for filling, Therefore, when the thermocouple 112 is welded to the pipe body, the first heat-conducting material 113 can be successfully filled into the narrow-diameter first cavity 1112; The size of the gap between the thermocouples 112 is required to be small, and the inner diameter of the first cavity 1112 can be made thinner (to meet the range of the radial gap a), which is beneficial to the miniaturization of the handheld temperature probe 10 .

In addition, the existing first heat-conducting material 113 filled with a syringe has more air bubbles, and the injected surface is uneven, and its surface often has multiple depressions or protrusions, while the first heat-conducting material 113 centrifuged by the centrifugal process With few or no bubbles, the first heat-conducting material 113 will form an inner arc or a horizontal surface when centrifuged in the accommodating cavity 1111 , and the surface is relatively flat, so that the heat-conducting effect is better.

In some embodiments, when the viscosity of the first thermally conductive material 113 is high, for example, when the first thermally conductive material 113 is thermally conductive silicone grease, a part of the first thermally conductive material 113 in the second cavity 1113 is centrifuged to the first cavity 1112 In the process, another part of the first heat-conducting material 113 in the second cavity 1113 remains on the wall of the second cavity 1113 .

In some embodiments, the accommodating cavity 1111 may only include the first cavity 1112. When filling the first heat-conducting material 113, a centrifugal auxiliary tube is connected after the first cavity 1112. The shape and arrangement of the centrifugal auxiliary tube may be Refer to the setting of the second cavity 1113 . A syringe can be used to inject the first heat-conducting material 113 into the centrifuge auxiliary tube, then put the tube body into the centrifuge, set the speed, time or power of the centrifuge and then centrifuge, the first heat-conducting material 113 moves from the centrifuge auxiliary tube to the centrifuge. In the first cavity 1112 , after centrifugation, the centrifugation auxiliary tube is removed from the first cavity 1112 , and the first heat-conducting material 113 can be centrifuged into the receiving cavity 1111 . In this manner, the first thermally conductive material 113 can also be filled into the narrow-diameter first cavity 1112 .

In some embodiments, a part of the space between the cavity wall of the first cavity 1112 and the thermocouple 112 can be filled with the first heat-conducting material 113 , or it can be a space between the cavity wall of the first cavity 1112 and the thermocouple 112 The entire space of is filled with the first heat conducting material 113 .

Further, the first heat conduction material 113 can fill the gap between the wall of the first cavity 1112 and the thermocouple 112, for example, in the embodiment of FIG. 3, the first heat conduction material 113 fills the first cavity 1112a In the gap between the cavity wall and the thermocouple 112 , the first thermal conductive material 113 also fills the gap between the cavity wall of the second cavity 1112 b and the thermocouple 112 . In some embodiments, please refer to FIG. 5 , which is another schematic structural diagram of the probe assembly 11 provided in the present application. The first heat conducting material 113 may only fill the gap between the wall of the first cavity 1112 a and the thermocouple 112 . In some embodiments, the first thermally conductive material 113 can fill the gap between the cavity wall of the first cavity 1112a and the thermocouple 112, and the first thermally conductive material 113 can also fill the cavity wall of the second cavity 1112b and the thermocouple 112. Part of the gap between the pair 112. In some embodiments, the first heat-conducting material 113 covers at least the connection between the working end 113 a of the thermocouple 112 and the tube wall of the first cavity 1112 .

In some embodiments, please refer to FIG. 6 , which is another structural schematic diagram provided by the present application. The probe assembly 11 further includes a second thermally conductive material 114 , the second thermally conductive material 114 fills the gap between the wall of the second cavity 1113 and the thermocouple 112 , and the second thermally conductive material 114 is used to seal the first thermally conductive material 113 . The second thermally conductive material 114 can fill the gap between the cavity wall of the second cavity 1113 and the thermocouple 112; in order to save costs, the second thermally conductive material 114 can also only fill the second cavity 1113 and connect with the first cavity 1112 As long as the gap at the entrance of the first heat conducting material 113 can be sealed. In the embodiment of FIG. 6 , the first heat-conducting material 113 is copper powder, and the second heat-conducting material 114 is heat-conducting silicone grease. Wherein, the copper powder can be filled into the first cavity 1112 by means of vibration, and the heat-conducting silicone grease can be filled into the second cavity 1113 by means of centrifugation or syringe injection.

By setting the second heat conduction material 114, the second heat conduction material 114 can also replace the air in the second cavity 1113, thereby shortening the response time of the temperature probe 10, and the second heat conduction material 114 can seal the first heat conduction material 113 in the first cavity 1112 .

In some embodiments, the probe assembly 11 may further include a seal, which is provided in the second cavity 1113, and the seal is used to seal the first heat-conducting material 113, that is, in this embodiment, the seal may replace the second cavity 1113. The second heat-conducting material 114 seals the first heat-conducting material 113 . Specifically, the sealing member can be sleeved on the insulating sleeve 1123 of the thermocouple 112 and arranged at the entrance where the second cavity 1113 is connected to the first cavity 1112 .

The present application also provides a hand-held temperature probe 10 for food cooking, and the hand-held temperature probe 10 includes a probe assembly 11 . The probe assembly 11 includes a tube body 111 , a thermocouple 112 and a first heat conducting material 113 .

Wherein, the tube body 111 has an accommodating cavity 1111, and a part of the thermocouple 112 is disposed in the accommodating cavity 1111, specifically, at least the working end 113a of the thermocouple 112 is disposed in the accommodating cavity. The thermocouple 112 can be fixed on the cavity wall of the accommodating cavity 1111 (described above), or not fixed on the cavity wall of the accommodating cavity 1111, and the following description is that the thermocouple 112 is not fixed on the cavity wall of the accommodating cavity 1111 scheme.

The first heat-conducting material 113 is filled in the containing cavity 1111 through a centrifugal process, and the first heat-conducting material 113 at least covers the working end 113 a of the thermocouple 112 .

In order to realize a more miniaturized temperature probe 10, some temperature probe tube bodies 111 have a narrower tube diameter. Even if the thermocouple 112 is not placed in the tube body 111 first, the tube diameter of the tube body 111 is also smaller than that of the injection end of the syringe. outside diameter. In this case, limited by the diameter of the tube body 111 and the outer diameter of the syringe, it is difficult for the syringe to inject the viscous heat-conducting material from the syringe into the tube body 111 .

However, in this application, the first heat-conducting material 113 is filled in the housing cavity 1111 by using a centrifugal process. On the one hand, the first heat-conducting material 113 is not limited by the diameter of the tube body 111 and the outer diameter of the injection end of the syringe, and can be directly passed by the centrifugal force. Moving into the accommodation cavity 1111 solves the problem that the miniaturized temperature probe 10 is difficult to fill with heat-conducting material; on the other hand, the first heat-conducting material 113 filled with the syringe has many bubbles, and the surface is uneven, with many depressions or protrusions on the surface , while the centrifuged first heat conduction material 113 has little or no air bubbles, the first heat conduction material 113 will form an inner arc or horizontal surface when centrifuged in the accommodating cavity 1111, the surface is relatively smooth, and the heat conduction effect is better.

It should be noted that, in the solution where the thermocouple 112 is not fixed on the cavity wall of the containing cavity 1111, the first heat-conducting material 113 can be filled into the containing cavity 1111 by a centrifugal process first, and then the thermocouple 112 is inserted to fill the first cavity. It is also possible to insert the thermocouple 112 into the containing cavity 1111 first, and then use the centrifugal process to fill the first thermal conductive material 113 into the containing cavity 1111 .

Similar to the scheme in which the thermocouple 112 is fixed in the housing cavity 1111 above, in order to facilitate filling the first heat-conducting material 113 into the housing cavity 1111 using a centrifugal process when the thermocouple 112 is inserted into the housing cavity 1111 , in some embodiments, The housing cavity 1111 includes a first cavity 1112 extending backward from the front end, the working end 113a of the thermocouple 112 is disposed in the first cavity 1112, and the radial gap between the thermocouple 112 and the wall of the first cavity 1112 a<3mm, preferably, a<2mm, in some embodiments, 0.1≦a≦1mm, such as 0.2mm, 0.375mm, 0.7mm, 1mm, etc. By setting the radial gap a between the thermocouple 112 and the cavity wall of the first cavity 1112 within a certain range, the volume of the hand-held temperature probe 10 is smaller, which is beneficial to the miniaturization of the hand-held temperature probe 10 change.

Further, in one embodiment, in addition to the first cavity 1112, the accommodating cavity 1111 also includes a second cavity 1113, the first cavity 1112 communicates with the second cavity 1113, and the front end of the second cavity 1113 is connected to the The rear end of the first cavity 1112 is connected. The thermocouple 112 also passes through the second cavity 1113, the radial gap between the thermocouple 112 and the cavity wall of the second cavity 1113 b≥a, in some embodiments, b≥3mm or b≥2mm, b The size can be determined according to the size of a, or according to the actual situation of the heat-conducting material. The definitions, shapes and feasible embodiments of the first cavity 1112 and the second cavity 1113 can refer to the above description, and will not be repeated here.

In the solution where the housing cavity 1111 has a second cavity 1113, since the second cavity 1113 has a relatively large diameter, a syringe can be used to inject the first heat-conducting material 113 into the second cavity 1113 first, and then the second cavity 1113 can be made through a centrifugal process. The first heat conducting material 113 in the second cavity 1113 moves toward the first cavity 1112 by centrifugal force, so that the first heat conducting material 113 at least covers the working end 113 a of the thermocouple 112 . Filling the first heat-conducting material 1113 in this way can realize the miniaturization of the temperature probe 10 and at the same time, the first heat-conducting material 1113 can be centrifuged from the wide-bore second cavity 1113 to the narrow-bore first cavity 1112 Among them, the response time of the temperature probe 10 is effectively reduced.

In some embodiments, when the viscosity of the first thermally conductive material 113 is high, for example, when the first thermally conductive material 113 is thermally conductive silicone grease, a part of the first thermally conductive material 113 in the second cavity 1113 is centrifuged to the first cavity 1112 In the process, another part of the first heat-conducting material 113 in the second cavity 1113 remains on the wall of the second cavity 1113 .

The above uses specific examples to illustrate the present invention, which is only used to help understand the present invention, and is not intended to limit the present invention. For those skilled in the technical field to which the present invention belongs, some simple deduction, deformation or replacement can also be made according to the idea of the present invention.

Claims (14)

1. A hand-held temperature probe for food cooking, comprising a probe assembly, the probe assembly comprising:

a tube body having a receiving cavity;

a thermocouple, a part of which is arranged in the accommodating cavity, wherein the working end of the thermocouple is penetrated and fixedly arranged on the tube body, and at least a part of the working end is exposed out of the tube body for detecting the temperature;

and the first heat conduction material is filled in the accommodating cavity and at least covers the joint of the working end and the pipe body.

2. The hand-held temperature probe for food cooking of claim 1, wherein the first thermally conductive material is filled in the receiving cavity by a centrifugation process.

3. The handheld temperature probe for cooking food materials according to claim 1 or 2, wherein the accommodating cavity comprises a first cavity extending backwards from a front end of the accommodating cavity, the thermocouple penetrates through the first cavity, a working end of the thermocouple is arranged on a cavity wall of the first cavity in a penetrating and fixed mode, the first heat conduction material is filled between the cavity wall of the first cavity and the thermocouple, and a radial gap a between the thermocouple and the cavity wall of the first cavity is smaller than 3mm.

4. The hand-held temperature probe for food cooking of claim 3, wherein 0.1mm ≦ a ≦ 1mm.

5. The hand-held temperature probe for food cooking as claimed in claim 3, wherein the receiving cavity comprises a second cavity communicating with the first cavity, the thermocouple further passes through the second cavity, and a radial gap b ≧ a between the thermocouple and a cavity wall of the second cavity.

6. The hand-held temperature probe for food cooking of claim 5, wherein the first thermally conductive material is further provided on a wall of the second cavity.

7. The hand-held temperature probe for food cooking of claim 3, wherein the first thermally conductive material fills a gap between a cavity wall of the first cavity and the thermocouple.

8. The hand-held temperature probe for food cooking of claim 1, wherein the first thermally conductive material is a thermally conductive silicone grease or copper powder.

9. The hand-held temperature probe for food cooking of claim 5, wherein the probe assembly further comprises a second thermally conductive material filled between a cavity wall of the second cavity and the thermocouple, the second thermally conductive material for sealing the first thermally conductive material.

10. The hand-held temperature probe for food cooking of claim 9, wherein the first thermally conductive material is copper powder and the second thermally conductive material is thermally conductive silicone grease.

11. A hand-held temperature probe for food cooking, comprising a probe assembly, the probe assembly comprising:

a tube body having a receiving cavity;

the thermocouple is partially arranged in the accommodating cavity;

the first heat conduction material is filled in the accommodating cavity and at least covers the working end of the thermocouple;

the first heat conduction material is filled in the containing cavity through a centrifugal process.

12. The hand-held temperature probe for food cooking of claim 11, wherein the receiving cavity comprises a first cavity extending rearward from a front end thereof, a portion of the thermocouple is disposed in the first cavity, the first cavity is filled with the first heat conducting material by a centrifugal process, and a radial gap a between the thermocouple and a cavity wall of the first cavity is < 3mm.

13. The hand-held temperature probe for food cooking of claim 12, wherein the receiving cavity comprises a second cavity communicating with the first cavity, the thermocouple passes through the second cavity, and a radial gap b ≧ a between the thermocouple and a cavity wall of the second cavity.

14. The hand-held temperature probe for food cooking of claim 13, wherein the first thermally conductive material is further provided on a wall of the second cavity.

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