Tubular steam heating module

Abstract

The utility model discloses a tubular steam heating module. The tubular steam heating module comprises a heating tube body and a mounting tube body covering the periphery of the heating tube body, the upper end and the lower end of the heating pipe body are respectively connected with a steam joint and a liquid inlet joint which are communicated with the steam generating cavity; a temperature sensor is arranged at the upper end of the installation pipe body, an elastic pressing piece is connected between the temperature sensor and the installation pipe body, and the elastic pressing piece enables the end face of the temperature sensor to be in contact with and abut against the upper end face of the heating pipe body. The temperature sensor is kept in contact and abutting connection with the upper end face of the heating pipe body through the elastic pressing piece, so that the detection precision of the temperature sensor used for a long time is guaranteed, the phenomenon that the temperature sensor falls off or loosens due to high temperature is effectively avoided, and the structural use reliability is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of instant heating, in particular to a tubular steam heating module. Background Art

[0002] On heating devices such as coffee machines or sweeping robots, the tubular steam heating device is a very important component, which generates steam by heating the liquid to be heated and sprays the steam out; when used in a coffee machine, the generated steam is used to brew coffee; when used in a sweeping robot, the generated steam is used for high-temperature disinfection.

[0003] The existing tubular steam heating device detects the steam temperature by welding a chip NTC at the steam discharge end, thereby achieving the effect of controlling the steam temperature. However, due to the high temperature at the steam discharge end, the soldering pad of the chip NTC may become loose or even come off during use, thereby affecting the detection accuracy of the chip NTC. Summary of the invention

[0004] The purpose of the utility model is to overcome the above-mentioned shortcomings and provide a tubular steam heating module, which ensures the detection accuracy of the temperature sensor during long-term use, effectively avoids the phenomenon of the temperature sensor falling off or loosening due to high temperature, and has higher structural reliability.

[0005] To achieve the above purpose, the specific scheme of the utility model is as follows:

[0006] A tubular steam heating module comprises a heating tube body and a mounting tube body wrapped around the heating tube body; the heating tube body has a steam generating chamber, and the upper and lower ends of the heating tube body are respectively connected to a steam joint and a liquid inlet joint which are connected to the steam generating chamber; a temperature sensor is provided at the upper end of the mounting tube body, and a spring-pressing piece is connected between the temperature sensor and the mounting tube body, and the spring-pressing piece keeps the end face of the temperature sensor in contact with the upper end face of the heating tube body.

[0007] In the utility model, the installation tube body is further provided with an installation guide cylinder, and the temperature sensor passes through the installation guide cylinder.

[0008] The utility model further has a disassembly link at the lower end of the installation tube body with an installation end cover, and the heating tube body is clamped and fixed in an installation space formed by the installation end cover and the installation tube body.

[0009] The utility model further provides that the installation tube body is also fixedly installed with a temperature control device for preventing the heating tube body from drying out.

[0010] The utility model further provides that the mounting end cover is provided with a mounting hole, and a connecting terminal electrically connected to the heating tube body is inserted into the mounting hole.

[0011] The utility model further comprises a connecting terminal comprising a terminal body, a first connecting portion, a plug-in portion, a second connecting portion and a welding portion; the terminal body is inserted into the mounting hole, one end of the terminal body is vertically connected to one end of the first connecting portion, one end of the plug-in portion is vertically connected to the other end of the first connecting portion, the other end of the terminal body is connected to one end of the second connecting portion, the welding portion is connected to the other end of the second connecting portion, the welding portion is electrically connected to the heating tube body, and the second connecting portion is arc-shaped.

[0012] In the present invention, at least one side wall of the first connecting portion is extended with a first clamping arm, and the first clamping arm is clamped on the outer end surface of the mounting end cover.

[0013] In the utility model, the elastic pressure piece is a spring or a spring sheet.

[0014] In the utility model, the temperature sensor is a NTC temperature sensor.

[0015] In the utility model, the temperature sensor is further connected with a wiring harness plug.

[0016] The beneficial effects of the utility model are as follows: the utility model utilizes the spring-pressed part to keep the temperature sensor in contact with the upper end surface of the heating tube body, thereby ensuring the detection accuracy of the temperature sensor during long-term use, effectively avoiding the temperature sensor from falling off or loosening due to high temperature, and the structure has higher reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the utility model from another perspective;

[0019] Figure 3 It is a cross-sectional schematic diagram of the utility model after the steam joint, liquid inlet joint and temperature control device are hidden;

[0020] Figure 4 yes Figure 3 A local enlarged schematic diagram of the middle A;

[0021] Figure 5 This is a cross-sectional schematic diagram from another perspective of the utility model after the steam joint, liquid inlet joint and temperature control device are hidden;

[0022] Figure 6 yes Figure 5 A partial enlarged schematic diagram of point B in the middle;

[0023] Figure 7It is a structural schematic diagram of the connection terminal of the utility model;

[0024] Explanation of the accompanying drawings: 1. heating tube body; 11. steam generating chamber; 12. steam joint; 13. liquid inlet joint; 2. mounting tube body; 21. mounting guide cylinder; 22. mounting hole; 3. temperature sensor; 31. wiring harness plug; 4. spring-pressed part; 5. mounting end cover; 6. temperature control device; 7. connecting terminal; 71. terminal body; 72. first connecting part; 73. plug-in part; 74. second connecting part; 75. welding part; 76. first clamp arm; 77. second clamp arm. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the scope of implementation of the present invention is not limited thereto.

[0026] like Figures 1 to 7 As shown, a tubular steam heating module described in this embodiment includes a heating tube body 1 and a mounting tube body 2 wrapped around the outer circumference of the heating tube body 1; the heating tube body 1 has a steam generating chamber 11, and the upper and lower ends of the heating tube body 1 are respectively connected with a steam joint 12 and a liquid inlet joint 13 connected with the steam generating chamber 11; a temperature sensor 3 is provided at the upper end of the mounting tube body 2, and a spring-pressing member 4 is connected between the temperature sensor 3 and the mounting tube body 2, and the spring-pressing member 4 keeps the end face of the temperature sensor 3 in contact with the upper end face of the heating tube body 1.

[0027] Specifically, when the tubular steam heating module of this embodiment is actually used, the liquid to be heated is pumped into the steam generating chamber 11 through the liquid inlet pipe, and the heating tube body 1 heats the liquid to be heated in the steam generating chamber 11 to generate steam, and the steam is discharged from the steam joint 12 under the action of air pressure, thereby achieving the steam use effect; in this process, the temperature sensor 3 maintains contact with the upper end surface of the heating tube body 1 under the action of the spring-pressing member 4, thereby performing real-time detection of the heating temperature of the steam to achieve the effect of controlling the steam temperature.

[0028] In this embodiment, the spring-pressed member 4 is used to keep the temperature sensor 3 in contact with the upper end surface of the heating tube body 1, thereby ensuring the detection accuracy of the temperature sensor 3 during long-term use, effectively avoiding the temperature sensor 3 from falling off or loosening due to high temperature, and the structure has higher reliability.

[0029] In addition, in this embodiment, the temperature sensor 3 is arranged to keep in contact with the upper end surface of the heating tube body 1, so that the temperature sensor 3 and the heating tube body 1 can be in full contact, thereby ensuring the accuracy of temperature detection.

[0030] Preferably, if Figure 1As shown, the steam joint 12 and the liquid inlet joint 13 are both passed through the upper end of the heating tube body 1, which is convenient for the assembly of the entire structure, helps to reduce the axial size of the structure, and is suitable for occasions where installation is limited. In addition, through the above arrangement, the liquid to be heated in the liquid inlet joint 13 passes through the high temperature area of ​​the heating tube body 1 in advance, thereby being able to preheat the liquid to be heated in the liquid inlet joint 13, and the heating efficiency is higher.

[0031] Preferably, if Figure 1 and Figure 2 As shown, the mounting tube body 2 is provided with a plurality of heat dissipation strip holes along the circumferential direction so as to dissipate the heat accumulated between the heating tube body 1 and the mounting tube body 2 .

[0032] like Figure 3 and Figure 4 As shown, based on the above embodiment, the mounting tube body 2 is further provided with a mounting guide cylinder 21, and the temperature sensor 3 passes through the mounting guide cylinder 21. In this embodiment, the mounting guide cylinder 21 is provided, and the mounting guide cylinder 21 is used to guide and limit the temperature sensor 3, so that the temperature sensor 3 is installed more firmly.

[0033] like Figures 1 to 3 , Figure 5 As shown, based on the above embodiment, further, the lower end of the mounting tube body 2 is detachably connected with a mounting end cap 5, and the heating tube body 1 is clamped and fixed in the mounting space formed by the mounting end cap 5 and the mounting tube body 2. This embodiment facilitates the assembly of the heating tube body 1 by providing the mounting end cap 5.

[0034] like Figure 1 and Figure 2 As shown, based on the above embodiment, the installation tube body 2 is further fixedly installed with a temperature control device 6 for preventing the heating tube body 1 from burning dry. This embodiment monitors the temperature of the heating tube body 1 by setting the temperature control device 6, thereby preventing the heating tube body 1 from burning dry, and the structure is safer to use.

[0035] like Figure 2 , Figures 5 to 7 As shown, based on the above embodiment, further, the mounting end cover 5 is provided with a mounting hole 22, and a connecting terminal 7 electrically connected to the heating tube body 1 is inserted into the mounting hole 22. In this embodiment, the connecting terminal 7 is arranged on the mounting end cover 5, so that the installation and fixation of the connecting terminal 7 are facilitated; during assembly, each connecting terminal 7 required by the heating tube body 1 is correspondingly installed in the mounting hole 22, and then the connecting terminal 7 is electrically connected to the heating tube body 1, and then the mounting tube body 2 is inserted into the outer periphery of the heating tube body 1, and the mounting tube body 2 and the mounting end cover 5 are detachably connected together.

[0036] like Figure 6and Figure 7 As shown, based on the above embodiment, further, the connecting terminal 7 includes a terminal body 71, a first connecting part 72, a plug-in part 73, a second connecting part 74 and a welding part 75; the terminal body 71 is inserted into the mounting hole 22, one end of the terminal body 71 is vertically connected to one end of the first connecting part 72, one end of the plug-in part 73 is vertically connected to the other end of the first connecting part 72, the other end of the terminal body 71 is connected to one end of the second connecting part 74, the welding part 75 is connected to the other end of the second connecting part 74, the welding part 75 is electrically connected to the heating tube body 1, and the second connecting part 74 is arc-shaped.

[0037] In actual use, the plug-in portion 73 is used to perform electrical plug-in operations with the outside world. By setting the first connecting portion 72 to be vertically connected to the plug-in portion 73 and the terminal body 71, there is a height difference between the terminal body 71 and the plug-in portion 73, which is beneficial to reducing the radial dimension of the structure and is more suitable for occasions with restricted installation; by setting the arc-shaped second connecting portion 74, the welding portion 75 can be elastically pressed against the welding point of the heating tube body 1, so that the welding between the connecting terminal 7 and the heating tube body 1 is more firm.

[0038] Preferably, the welding portion 75 is provided with a notch, and the shape of the notch can be set to be U-shaped, V-shaped or semicircular, etc., so that the connection between the welding portion 75 and the heating pipe body 1 is more reliable.

[0039] like Figure 7 As shown, based on the above embodiment, further, at least one side wall of the first connecting portion 72 extends with a first clamping arm 76, and the first clamping arm 76 is clamped on the outer end surface of the mounting end cover 5. In this embodiment, by providing the first clamping arm 76, during installation, the first clamping arm 76 is clamped with the mounting end cover 5 to achieve rapid assembly of the connecting terminal 7.

[0040] like Figure 7 As shown, based on the above embodiment, further, at least one side wall of the terminal body 71 extends with a second clamping arm 77, and the second clamping arm 77 is clamped in the mounting hole 22. Such a configuration makes the connection terminal 7 more firmly mounted and not easy to loosen.

[0041] like Figure 4 As shown, based on the above embodiment, further, the elastic member 4 is a spring or a spring. Preferably, the present embodiment adopts a spring, and the spring is coaxially arranged with the temperature sensor 3, so that the elastic force of the spring is along the axial direction of the temperature sensor 3, so that the temperature sensor 3 can be reliably pressed against the surface of the heating tube body 1.

[0042] Based on the above embodiment, further, the temperature sensor 3 is an NTC temperature sensor. The NTC temperature sensor has the characteristics of high sensitivity, fast response speed and simple and flexible structure.

[0043] like Figures 1 to 5 As shown, based on the above embodiment, the temperature sensor 3 is further connected with a wiring harness plug 31. In this embodiment, the wiring harness plug 31 is provided to facilitate the electrical connection of the temperature sensor 3 and the assembly.

[0044] The above is only a preferred embodiment of the present utility model, so any equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the protection scope of the present utility model patent application.

Claims

1. A tubular steam heating module, characterized in that: It comprises a heating tube body and a mounting tube body wrapped around the heating tube body; the heating tube body has a steam generating chamber, and the upper and lower ends of the heating tube body are respectively connected with a steam joint and a liquid inlet joint which are connected with the steam generating chamber; a temperature sensor is arranged at the upper end of the mounting tube body, and a spring-pressing piece is connected between the temperature sensor and the mounting tube body, and the spring-pressing piece keeps the end face of the temperature sensor in contact with the upper end face of the heating tube body.

2. A tubular steam heating module according to claim 1, characterized in that: The installation tube body is provided with an installation guide cylinder, and the temperature sensor runs through the installation guide cylinder.

3. A tubular steam heating module according to claim 1, characterized in that: The lower end of the installation tube body is disassembled and connected with an installation end cover, and the heating tube body is clamped and fixed in an installation space formed by the installation end cover and the installation tube body.

4. A tubular steam heating module according to claim 1, characterized in that: The installation tube body is also fixedly mounted with a temperature control device for preventing the heating tube body from drying out.

5. The tubular steam heating module according to claim 3, characterized in that: The mounting end cover is provided with a mounting hole, and a connecting terminal electrically connected to the heating pipe body is inserted into the mounting hole.

6. A tubular steam heating module according to claim 5, characterized in that: The connecting terminal includes a terminal body, a first connecting part, a plug-in part, a second connecting part and a welding part; the terminal body is inserted into the mounting hole, one end of the terminal body is vertically connected to one end of the first connecting part, one end of the plug-in part is vertically connected to the other end of the first connecting part, the other end of the terminal body is connected to one end of the second connecting part, the welding part is connected to the other end of the second connecting part, the welding part is electrically connected to the heating tube body, and the second connecting part is arc-shaped.

7. A tubular steam heating module according to claim 6, characterized in that: A first clamping arm extends from at least one side wall of the first connecting portion, and the first clamping arm is clamped on the outer end surface of the mounting end cover.

8. The tubular steam heating module according to claim 1, characterized in that: The elastic pressure piece is a spring or a spring sheet.

9. The tubular steam heating module according to claim 1, characterized in that: The temperature sensor is an NTC temperature sensor.

10. The tubular steam heating module according to claim 1, characterized in that: The temperature sensor is connected with a wiring harness plug.

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