Temperature sensing probe and combustor

Abstract

The utility model relates to a temperature-sensing probe, comprising a temperature-sensing assembly which comprises a temperature-sensing element and a temperature-sensing plate; the temperature sensing element is located in an inner cavity of the first tube shell, and a top tube opening of the first tube shell is covered with the temperature sensing plate; and the second tube shell is sleeved outside the first tube shell, a gap is formed between the second tube shell and the first tube shell, an upper tube opening of the second tube shell abuts against the periphery of the temperature sensing plate, or the periphery of a top tube opening of the first tube shell is provided with a first flange extending outwards in the radial direction, and an upper tube opening of the second tube shell abuts against the first flange. The lower end of the second pipe shell is connected with the first pipe shell, and the joint of the two is far away from the gathering point of high-temperature flue gas, so that heat of the high-temperature flue gas outside the second pipe shell is effectively reduced to be transferred to the temperature sensing element through the first pipe shell; and the upper end of the second tube shell abuts against the periphery of the temperature sensing plate, or the upper end of the second tube shell abuts against the periphery of the upper port of the first tube shell, so that the high-temperature flue gas cannot enter the gap between the first tube shell and the second tube shell, and the influence of the high-temperature flue gas on the temperature sensing element is further reduced.

Description

Technical Field

[0001] The utility model relates to the field of stoves, in particular to a temperature sensing probe for a burner and a burner. Background Art

[0002] Determining the temperature of the bottom of the pot during heating or cooking has a significant impact on the cooking results. For example, in the process of boiling syrup or preheating an oil pan, predetermining or real-time monitoring the temperature of the bottom of the pot can effectively prevent the food from burning and sticking due to the high temperature of the bottom of the pot, or prevent the heating or cooking time from being prolonged due to the low temperature of the bottom of the pot. In this regard, technicians in this field have adopted a method of setting a probe on the burner to monitor the temperature of the bottom of the pot. However, the probe used for the burner in the prior art is easily affected by high-temperature smoke, which makes the measurement result inaccurate.

[0003] In order to reduce the influence of high-temperature flue gas on the burner probe, a Chinese utility model patent with application number 202320077510.3 (publication number CN218916558U) discloses a probe assembly, which includes: a probe, one end of which is provided with a detection section; a first shell, which is sleeved outside the probe, and the end of the first shell close to the detection section has a heat collecting plate; and a first chamber, a partition plate is provided on the inner wall of the first shell, and the heat collecting plate, the partition plate and the first shell enclose the first chamber, and the first chamber at least partially surrounds the radial outer side of the detection section. The first chamber can isolate the influence of the high-temperature flue gas of the burner on the detection section, and the detection section only measures the temperature of the object to be measured that is heat-conducted to the heat collecting plate, thereby improving the measurement reliability. In addition, in this scheme, a second shell is provided on the radial side of the first shell, and the second shell is spaced apart from the first shell, and the second shell at least partially surrounds the outside of the first chamber, and the end of the second shell close to the heat collecting plate is folded toward the first shell and abuts against the outer wall of the first shell.

[0004] The second shell is connected to the first shell by folding and abutting against the outer wall of the first shell, that is, the first shell and the second shell are connected by surface, and the connection point is close to the temperature sensing element and the high-temperature smoke gathering point. After the surface connection, the heat transfer between the first shell and the second shell is accelerated, so that the heat of the high-temperature smoke outside the second shell is easily transferred to the first shell and then to the detection section, causing the temperature measured by the detection section to become higher, thereby erroneously triggering the high-temperature warning of the probe. Utility Model Content

[0005] The first technical problem to be solved by the utility model is to provide a temperature sensing probe which can reduce the influence of high temperature flue gas on temperature measurement accuracy in view of the current status of the prior art.

[0006] The second technical problem to be solved by the utility model is to provide a burner with the above-mentioned temperature sensing probe.

[0007] The technical solution adopted by the utility model to solve the above-mentioned first technical problem is as follows: the temperature sensing probe comprises a temperature sensing assembly, comprising a temperature sensing element and a temperature sensing plate for transferring heat of the object to be measured to the temperature sensing element;

[0008] A first tube shell, the temperature sensing element is located in its inner cavity, and the temperature sensing plate covers the top tube opening of the first tube shell;

[0009] The second tube shell is sleeved outside the first tube shell with a gap between the two, and is characterized in that:

[0010] The upper tube opening of the second tube shell abuts against the periphery of the temperature sensing plate, or,

[0011] The periphery of the top tube opening of the first tube shell has a first flange extending radially outward, and the upper tube opening of the second tube shell abuts against the first flange.

[0012] Furthermore, the periphery of the temperature sensing plate body extends downward and then radially inward to form a limiting ring, the temperature sensing plate body and the limiting ring enclose a limiting groove, and the first flange is accommodated in the limiting groove;

[0013] The top tube opening of the second tube shell abuts against the limiting ring or the first flange.

[0014] In order to connect the second tube shell to the first tube shell, the temperature sensing probe further comprises a fixing base connected to the outer peripheral wall of the first tube shell, and the lower end of the second tube shell is clamped on the fixing base.

[0015] Furthermore, the fixed base has an annular clamping plate and an inner annular wall extending upward along the inner edge of the annular clamping plate, the inner annular wall is sleeved on the outer peripheral wall of the first tube shell, and the annular clamping plate is provided with a bayonet for clamping with the lower end of the second tube shell.

[0016] In order to improve the heat dissipation of the first tube shell, at least two heat exchange holes are opened on the annular clamping plate.

[0017] In order to reduce the heat transferred from the high-temperature flue gas to the temperature sensing element, the temperature sensing probe also includes a third tube shell spaced outside the second tube shell, and the lower end of the third tube shell is also clamped on the annular clamping plate; the upper tube mouth periphery of the second tube shell has a second flange extending radially outward, and the upper end of the third tube shell abuts against the second flange.

[0018] In order to improve the heat insulation effect, the outer peripheral wall of the third tube shell is covered with a nano-ceramic coating.

[0019] In order to facilitate the temperature sensing plate to transfer heat to the temperature sensing element while avoiding the heat of high-temperature flue gas from being transferred to the temperature sensing element, an annular wall extends downward from the bottom surface of the temperature sensing plate, and the lower edge of the annular wall extends radially outward to the inner circumferential wall of the first tube shell to form an isolation plate. The temperature sensing element is located in a first chamber enclosed by the annular wall and the temperature sensing plate, and the outer circumferential wall of the annular wall, the temperature sensing plate, the isolation plate and the inner circumferential wall of the first tube shell enclose a second chamber, and the second chamber is located outside the first chamber.

[0020] In order to be suitable for more types of cookware and for the pot-turning operation, the temperature sensing probe also includes a push rod. The first tube shell has a bottom pipe opening connected to the inner cavity. The push rod is inserted into the bottom pipe opening and can move up and down relative to the first tube shell. An elastic member is provided in the inner cavity of the first tube shell. The upper end of the elastic member abuts against the isolation plate, and the lower end of the elastic member abuts against the upper end of the push rod.

[0021] In order to prevent the push rod from colliding with the first tube shell and making noise, the upper end of the push rod has a third flange extending radially outward, and the side wall of the first tube shell has a bending portion that bends radially inward and then continues to bend downward. The third flange corresponds to the position of the bending portion, and a pad is provided on the bending portion, and the upper surface of the pad can contact the third flange.

[0022] Furthermore, at least two circles of heat dissipation protrusions are provided on the outer peripheral wall of the first tube shell.

[0023] The technical solution adopted by the utility model to solve the second technical problem is: the burner is a burner with the above-mentioned temperature sensing probe.

[0024] Compared with the prior art, the temperature sensing probe of the present invention has the following advantages: the lower end of the second tube shell is connected to the first tube shell, and the connection between the two is far away from the gathering point of the high-temperature flue gas, which effectively reduces the heat of the high-temperature flue gas outside the second tube shell being transferred to the temperature sensing element through the first tube shell; in addition, the upper end of the second tube shell abuts against the periphery of the temperature sensing plate, or the upper end of the second tube shell abuts against the first flange of the first tube shell, so that the high-temperature flue gas cannot enter the gap between the first tube shell and the second tube shell, and the air in the gap is conducive to isolating heat, further reducing the influence of the high-temperature flue gas on the temperature sensing element.

[0025] The burner of the present invention also has the above advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of the temperature sensing probe in the embodiment of the utility model;

[0027] Figure 2 for Figure 1 A cross-sectional view of the temperature sensing probe shown;

[0028] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0029] Figure 4 for Figure 1 A partial cross-sectional view of the temperature sensing probe shown;

[0030] Figure 5 It is a structural schematic diagram of a fixed base in an embodiment of the utility model. DETAILED DESCRIPTION

[0031] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0032] like Figures 1 to 5 The figure shows a preferred embodiment of the temperature sensing probe of the utility model, which comprises a temperature sensing element 11, a temperature sensing board 12, a first tube shell 2, a second tube shell 3, a third tube shell 5, a fixed base 4 and a top rod 6.

[0033] Among them, the first tube shell 2 has an inner cavity 2a, a top tube mouth 201, a bottom tube mouth 202 and a plurality of circles of heat dissipation protrusions 23 distributed on the outer peripheral wall of the first tube shell 2. The temperature sensing element 11 is arranged in the inner cavity 2a of the first tube shell 2, and the temperature sensing board 12 covers the top tube mouth 201 of the first tube shell 2. The bottom of the temperature sensing element 11 is connected to a wire 13, and the wire 13 of the temperature sensing element 11 passes through the inner cavity 2a of the first tube shell 2 and extends outward from the bottom tube mouth 202.

[0034] The periphery of the top tube opening 201 of the first tube shell 2 has a first flange 21 extending radially outward, the periphery of the body of the temperature sensing plate 12 extends downward and then extends radially inward to form a limiting ring 121, the body of the temperature sensing plate 12 and the limiting ring 121 surround a limiting groove 122, the first flange 21 is accommodated in the limiting groove 122, so that the temperature sensing plate 12 tightly covers the top tube opening 201 of the first tube shell 2; the bottom surface of the temperature sensing plate 12 extends downward with an annular wall 123, the lower edge of the annular wall 123 extends radially outward to the inner peripheral wall of the first tube shell 2 to form an isolation plate 124; the temperature sensing element 11 is located in the first chamber 1a surrounded by the annular wall 123 and the temperature sensing plate 12, the outer peripheral wall of the annular wall 123, the temperature sensing plate 12, the isolation plate 124 and the inner peripheral wall of the first tube shell 2 surround a second chamber 1b, and the second chamber 1b is located on the periphery of the first chamber 1a.

[0035] The temperature sensing plate 12 transfers the heat of the object to be measured to the temperature sensing element 11 located in the first chamber 1a, and the second chamber 1b is used to block the heat of the high-temperature flue gas.

[0036] The fixed base 4 has an annular clamping plate 41 and an inner annular wall 42 extending upward along the inner edge of the annular clamping plate 41, the inner annular wall 42 is sleeved on the outer peripheral wall of the first tube shell 2, and a circle of clamping grooves 421 are provided on the inner peripheral wall of the inner annular wall 42, and the clamping grooves 421 are clamped with a circle of heat dissipation protrusions 23 on the outer peripheral wall of the first tube shell 2. The annular clamping plate 41 is also provided with a plurality of clamping ports 411 and three heat exchange holes 412.

[0037] The second tube shell 3 and the third tube shell 5 are sequentially sleeved outside the first tube shell 2 at intervals, and the lower ends of the second tube shell 3 and the third tube shell 5 are both clamped in the bayonet 411 of the annular clamping plate 41. The upper tube mouth 301 of the second tube shell 3 has a second flange 31 extending radially outward. In this embodiment, the second flange 31 of the second tube shell 3 abuts against the limit ring 121 of the temperature sensing plate 12 (in other embodiments, the second flange 31 of the second tube shell 3 can also abut against the first flange 21 of the first tube shell 2), and the upper end of the third tube shell 5 abuts against the second flange 31. The outer peripheral wall of the third tube shell 5 is covered with a nano-ceramic coating.

[0038] In addition, the push rod 6 is inserted into the bottom tube opening 202 of the first tube shell 2 and can move up and down relative to the first tube shell 2. The upper end of the push rod 6 has a third flange 61 extending radially outward. The side wall of the first tube shell 2 has a bending portion 22 that is bent radially inward and then continues to bend downward. The third flange 61 corresponds to the position of the bending portion 22. An elastic member 7 is provided in the inner cavity 2a of the first tube shell 2. The upper end of the elastic member 7 abuts against the isolation plate 124, and the lower end of the elastic member 7 abuts against the third flange 61 of the push rod 6. A cushion block 8 is provided on the bending portion 22, and the upper surface of the cushion block 8 can contact the third flange 61.

[0039] The utility model also protects a burner using the temperature sensing probe.

Claims

1. A temperature sensing probe, comprising A temperature sensing component, comprising a temperature sensing element (11) and a temperature sensing plate (12) for transferring heat of a temperature-measured object to the temperature sensing element (11); A first tube shell (2), the temperature sensing element (11) being located in its inner cavity (2a), and the temperature sensing plate (12) covering the top tube opening (201) of the first tube shell (2); The second tube shell (3) is sleeved outside the first tube shell (2) with a gap between the two, and is characterized in that: The upper tube opening (301) of the second tube shell (3) abuts against the periphery of the temperature sensing plate (12), or, The periphery of the top tube opening (201) of the first tube shell (2) has a first flange (21) extending radially outward, and the upper tube opening (301) of the second tube shell (3) abuts against the first flange (21).

2. The temperature sensing probe according to claim 1, characterized in that: The periphery of the temperature sensing plate (12) body extends downward and then radially inward to form a limiting ring (121), the temperature sensing plate (12) body and the limiting ring (121) enclose a limiting groove (122), and the first flange (21) is accommodated in the limiting groove (122); The top pipe opening (201) of the second pipe shell (3) abuts against the limiting ring (121) or the first flange (21).

3. The temperature sensing probe according to claim 1, characterized in that: It also comprises a fixed base (4) connected to the outer peripheral wall of the first tube shell (2), and the lower end of the second tube shell (3) is clamped on the fixed base (4).

4. The temperature sensing probe according to claim 3, characterized in that: The fixed base (4) comprises an annular clamping plate (41) and an inner annular wall (42) extending upward along the inner edge of the annular clamping plate (41); the inner annular wall (42) is sleeved on the outer peripheral wall of the first tube shell (2); and the annular clamping plate (41) is provided with a bayonet (411) for clamping with the lower end of the second tube shell (3).

5. The temperature sensing probe according to claim 4, characterized in that: At least two heat exchange holes (412) are formed on the annular clamping plate (41).

6. The temperature sensing probe according to claim 5, characterized in that: It also comprises a third tube shell (5) which is sleeved outside the second tube shell (3) at an interval, and the lower end of the third tube shell (5) is also clamped on the annular clamping plate (41); the upper tube opening (301) of the second tube shell (3) has a second flange (31) extending radially outward at the periphery, and the upper end of the third tube shell (5) is in contact with the second flange (31).

7. The temperature sensing probe according to claim 6, characterized in that: The outer peripheral wall of the third tube shell (5) is covered with a nano ceramic coating.

8. The temperature sensing probe according to any one of claims 1 to 7, characterized in that: An annular wall (123) extends downward from the bottom surface of the temperature sensing plate (12); the lower edge of the annular wall (123) extends radially outward to the inner peripheral wall of the first tube shell (2) to form an isolation plate (124); the temperature sensing element (11) is located in a first chamber (1a) enclosed by the annular wall (123) and the temperature sensing plate (12); the outer peripheral wall of the annular wall (123), the temperature sensing plate (12), the isolation plate (124) and the inner peripheral wall of the first tube shell (2) enclose a second chamber (1b); and the second chamber (1b) is located outside the first chamber (1a).

9. The temperature sensing probe according to claim 8, characterized in that: It also includes a top rod (6); the first tube shell (2) has a bottom pipe opening (202) connected to the inner cavity (2a); the top rod (6) is inserted into the bottom pipe opening (202) and can move up and down relative to the first tube shell (2); an elastic member (7) is provided in the inner cavity (2a) of the first tube shell (2); the upper end of the elastic member (7) abuts against the isolation plate (124); and the lower end of the elastic member (7) abuts against the upper end of the top rod (6).

10. The temperature sensing probe according to claim 9, characterized in that: The upper end of the push rod (6) has a third flange (61) extending radially outward, the side wall of the first tube shell (2) has a bending portion (22) that is bent radially inward and then continues to bend downward, the third flange (61) corresponds to the position of the bending portion (22), and a cushion block (8) is provided on the bending portion (22), and the upper surface of the cushion block (8) can contact the third flange (61).

11. The temperature sensing probe according to claim 1, characterized in that: At least two circles of heat dissipation protrusions (23) are provided on the outer peripheral wall of the first tube shell (2).

12. A burner, characterized in that: A temperature sensing probe as described in any one of claims 1 to 11 is used.

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