Simple and small-sized manual reset liquid expansion type temperature controller

Abstract

The utility model relates to a simple and small-sized manual reset liquid expansion type temperature controller, which comprises a fixed support, the fixed support is formed by continuously bending metal and forms a U-shaped groove, a diaphragm capsule and a preassembled temperature control module are connected in the U-shaped groove, and the diaphragm capsule is connected with a temperature sensing cylinder through a capillary tube; an on-off switch is arranged in the temperature control module, an anti-reset assembly is arranged at the end, stretching into the U-shaped groove, of the temperature control module, the anti-reset assembly abuts against the position between the on-off switch and the action end of the diaphragm capsule, and the other end of the temperature control module is slidably connected with a manual reset rod abutting against or adjacent to the on-off switch; one end of the manual reset rod extends out of the temperature control module and forms a pressing end; the liquid expansion type temperature controller is simple in structure, easy and convenient to assemble, small in size, wide in application range, reliable in action, more accurate in temperature control, stable and reliable in performance and long in service life, after the diaphragm capsule acts to switch on and switch off the circuit, manual reset can only be achieved through the manual reset rod, and therefore the protection effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of temperature controller, concretely is a simple and small -sized manual reset liquid expansion type temperature controller. BACKGROUND

[0002] The existing liquid expansion type temperature controller is mainly used in the temperature control occasions such as household electrical appliances industry, electric heating equipment, refrigeration industry.The working principle of the existing liquid expansion type temperature controller is that when the temperature of the controlled object changes, the substance in the temperature sensing cylinder or temperature sensing cap of the temperature sensing part of the temperature controller is generally liquid to produce corresponding thermal expansion and cold shrinkage physical phenomenon volume change, and the diaphragm box connected with the temperature sensing part produces expansion or shrinkage.According to the principle of lever, the on-off action of the switch is driven to achieve the purpose of constant temperature.The liquid expansion type temperature controller has the performance characteristics of accurate temperature control, stable and reliable, small temperature difference between start and stop, large control temperature adjustment range, large overload current, etc.But the existing liquid expansion type temperature controller is generally large in size and requires a large installation space, therefore, it is necessary to improve the existing liquid expansion type temperature controller. SUMMARY

[0003] The utility model aims at solving the above -mentioned existing problems, and provides a simple and small -sized manual reset liquid expansion type temperature controller with simple and reasonable structure.

[0004] A simple and small -sized manual reset liquid expansion type temperature controller, including fixed support, the fixed support is formed by metal continuous bending and forms the U-shaped groove, the U-shaped groove is connected with the coaxial diaphragm box and the preloaded temperature control module in turn to the opening direction thereof, the temperature sensing cylinder is connected to the diaphragm box through the capillary tube;The on-off switch connected in series on the wire circuit is arranged in the temperature control module, the temperature control module is arranged with the anti-reset component at one end of the U-shaped groove, the anti-reset component is abutted between the on-off switch and the action end of the diaphragm box, the other end of the temperature control module is slidably connected with the manual reset rod abutting or adjacent to the on-off switch, and one end of the manual reset rod extends out of the temperature control module and forms the pressing end.

[0005] The utility model also can solve the following technical measures:

[0006] As a more specific scheme, the base of the fixed support is threadedly connected with a fine adjustment bolt, the fine adjustment bolt is abutted on the fixed end of the diaphragm box, and the inner end of the fine adjustment bolt is provided with an axial through hole, and the fixed end of the diaphragm box extends a guide rod inserted into the axial through hole.

[0007] As a further scheme, the anti-reset component includes a steel sheet capable of being driven to deform and a movable push rod, the steel sheet and the movable push rod are coaxially arranged, the action end of the diaphragm box is abutted or adjacent to the center of the steel sheet, and the movable push rod is slidably connected in the temperature control module and abutted between the steel sheet and the on-off switch.

[0008] As a further scheme, the temperature control module further comprises a main body shell, a steel sheet support block is connected to the mouth of the main body shell, the on-off switch is arranged between the steel sheet support block and the main body shell, a guide hole is formed in the steel sheet support block, the guide hole and the movable push rod are in linear sliding fit, a cover is riveted outside the steel sheet support block, the steel sheet is encapsulated between the cover and the steel sheet support block, and the cover is provided with a relief opening corresponding to the steel sheet.

[0009] As a further scheme, the bottom of the main body shell is provided with a rod hole, the rod hole and the manual reset rod are in linear sliding fit, and the pressing end of the manual reset rod is fixedly connected with a pressing head.

[0010] As a further scheme, the on-off switch comprises a movable contact and a static contact arranged in the main body shell, one end of the movable contact and the static contact is provided with a contact which elastically touches each other, the movable push rod and the manual reset rod abut on the movable contact at the opposite side, and the other end of the movable contact and the static contact is connected with a rivet, the rivet extends out of the bottom of the main body shell and is connected with a connecting sheet respectively.

[0011] As a further scheme, the two end heads of the fixed support are provided with a connecting fit part, the opposite side of the temperature control module is provided with a fastening connecting part corresponding to the connecting fit part, the temperature control module is connected on the fixed support through the fastening connecting part and the connecting fit part, and one end of the temperature control module penetrates into the U-shaped groove.

[0012] As a further scheme, the fastening connecting part comprises a connecting lug connected on the cover and a separate fixing bolt, and a through hole is formed in the connecting lug; the connecting fit part comprises a flange bent outward from the side of the fixed support, the flange abuts on the connecting lug, and a fastening screw hole is formed in the flange corresponding to the through hole, and the fixing bolt is arranged through the through hole and the fastening screw hole, so that the temperature control module and the fixed support are assembled and connected.

[0013] As a further scheme, the two side plates of the fixed support are connected on the end of the base and are arranged to extend downward, the two side edges of the base are bent upward to form a connecting leg through continuous bending, and a mounting screw hole for assembling the liquid expansion type temperature controller is formed in the connecting leg.

[0014] As a further scheme, the fixed support is integrally made of a metal material, and a bendable soft edge is punched outward on one of the side plates, at least one section of the capillary tube is sleeved with a protective sleeve, and the protective sleeve is clamped on the fixed support through the bendable soft edge.

[0015] The beneficial effects of the utility model are as follows:

[0016] The utility model discloses a simple and small manual reset liquid expansion type temperature controller, this liquid expansion type temperature controller simple structure, easy assembly, small, wide application range, action reliable, temperature control is more accurate, stable and reliable performance, long service life, the membrane box action will on-off switch cut off circuit, only through manual reset lever manual reset, thereby play the protection function. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is the structure schematic diagram of an embodiment in the utility model.

[0018] Fig. 2 It is the structure schematic diagram of an embodiment in the utility model.

[0019] Fig. 3 It is the structure schematic diagram of an embodiment in the utility model.

[0020] Fig. 4 It is the structure schematic diagram of an embodiment in the utility model. DETAILED DESCRIPTION

[0021] The utility model is further explained below in connection with the drawings and examples.

[0022] As Figs. 1 to 4 The utility model discloses a simple and small manual reset liquid expansion type temperature controller, this liquid expansion type temperature controller simple structure, easy assembly, small, wide application range, action reliable, temperature control is more accurate, stable and reliable performance, long service life, the membrane box action will on-off switch cut off circuit, only through manual reset lever manual reset, thereby play the protection function.

[0023] The utility model discloses a simple and small manual reset liquid expansion type temperature controller, this liquid expansion type temperature controller simple structure, easy assembly, small, wide application range, action reliable, temperature control is more accurate, stable and reliable performance, long service life, the membrane box action will on-off switch cut off circuit, only through manual reset lever manual reset, thereby play the protection function.

[0024] The base 14 of the fixed support 1 is threadedly connected with a fine adjustment bolt 6, the inner end of the fine adjustment bolt 6 is provided with an axial through hole 601, the fixed end of the diaphragm capsule 2 is provided with a guide rod 21 inserted into the axial through hole 601, and the outer end of the fine adjustment bolt 6 is provided with a cross slot 602 or a slot, so that the position of the diaphragm capsule 2 can be fine adjusted before leaving the factory, and the precision of the liquid expansion type temperature controller is improved.

[0025] The two ends of the fixed support 1 are provided with connecting matching parts, the opposite side of the temperature control module 3 is provided with fastening connecting parts corresponding to the connecting matching parts, the temperature control module 3 is connected with the fixed support 1 through the fastening connecting parts and the connecting matching parts, and one end of the temperature control module 3 protrudes into the U-shaped groove 101; in this embodiment, the temperature control module 3 is a snap-action type temperature controller, can be pre-assembled, and then connected with the fastening connecting parts and the connecting matching parts, so that the temperature control module 3 can be quickly assembled on the fixed support 1, and the temperature control module 3 is convenient to disassemble, maintain and replace.

[0026] The anti-resetting assembly 32 comprises a steel sheet 34 capable of being deformed by driving and a movable push rod 35, the steel sheet 34 and the movable push rod 35 are coaxially arranged, the action end of the diaphragm capsule 2 abuts or is adjacent to the center of the steel sheet 34, the movable push rod 35 is slidingly connected in the temperature control module 3 and abuts between the steel sheet 34 and the on-off switch 31.

[0027] The action end of the diaphragm capsule 2 is provided with a protrusion 22, after the protrusion 22 is displaced and the steel sheet 34 is deformed by driving inwardly when the diaphragm capsule 2 senses temperature, the steel sheet 34 pushes the movable push rod 35 to press the on-off switch 31, so that the on-off switch 31 is disconnected from the working circuit, and the steel sheet 34 can still maintain the shape after the protrusion 22 is reset, so that the on-off switch 31 is prevented from being automatically reset.

[0028] The temperature control module 3 further comprises a main body shell 36, the mouth of the main body shell 36 is covered with a steel sheet support block 37, the on-off switch 31 is arranged between the steel sheet support block 37 and the main body shell 36, the steel sheet support block 37 is provided with a guide hole 371, the guide hole 371 and the movable push rod 35 form a linear sliding fit, the steel sheet support block 37 is riveted with a cover 38, the steel sheet 34 is encapsulated between the cover 38 and the steel sheet support block 37, and the cover 38 is provided with a avoiding opening 381 corresponding to the steel sheet 34.

[0029] The guide hole 371 can ensure that the movable push rod 35 slides linearly and cannot be displaced and deflected, the steel sheet 34 is fixed by the steel sheet support block 37, the structure is simple and easy to assemble, and the avoiding opening 381 can expose the outer surface of the steel sheet 34, so that the protrusion 22 can press against the steel sheet 34.

[0030] The bottom of the main body shell 36 is provided with a rod hole 361, which is in linear sliding fit with the manual reset rod 33. The pressing end of the manual reset rod 33 is fixedly connected with a pressing head 331. The pressing head 331 can limit the manual reset rod 33, and the pressing head 331 increases the contact area of the fingers, so that the pressing is more comfortable.

[0031] The on-off switch 31 comprises a movable contact 311 and a static contact 312 arranged in the main body shell 36. One end of the movable contact 311 and the static contact 312 is provided with a contact 313 which elastically touches each other. The opposite side of the movable push rod 35 and the manual reset rod 33 abuts against the movable contact 311. The other end of the movable contact 311 and the static contact 312 is connected with a rivet 314. The rivet 314 extends out of the bottom of the main body shell 36 and is connected with a connecting tab 315 respectively. The above structure belongs to the conventional structure of the snap type temperature controller, which will not be described in detail here.

[0032] The fastening connection part comprises a connecting lug 382 connected to the cover 38 on the opposite side and a separate fixing bolt 7. The connecting lug 382 is provided with a through hole 383. The connecting fit part comprises a flange 11 bent outward from the side of the fixed support 1. The flange 11 abuts against the connecting lug 382 and is provided with a fastening screw hole 12 corresponding to the through hole 383. The fixing bolt 7 is arranged through the through hole 383 and the fastening screw hole 12 to realize the assembly connection of the temperature control module 3 and the fixed support 1. The assembly is fixed by the fixing bolt 7, which is firm and simple to install, and has high production efficiency.

[0033] The two side plates 13 of the fixed support 1 are connected to the end of the base 14 and extend downward. The two side edges of the base 14 are upwardly folded by continuous bending to form connecting feet 15. The connecting feet 15 are provided with mounting screw holes 16 for assembling the liquid expansion type temperature controller. The two connecting feet 15 and the two side plates 13 are arranged in a cross shape. The connecting feet 15 are mainly used for assembling the liquid expansion type temperature controller to the carrier.

[0034] The base 14 of the fixed support 1 is provided with an adjusting screw hole 17. The fine adjustment bolt 6 is threadedly connected in the adjusting screw hole 17. In addition, the fastening screw hole 12, the adjusting screw hole 17 and the mounting screw hole 16 are all provided with a through hole 102 in the fixed support. An internally threaded ring 8 is welded on one side of the through hole 102. The internally threaded ring 8 and the through hole 102 form the fastening screw hole 12, the adjusting screw hole 17 and the mounting screw hole 16.

[0035] The fixed support 1 is integrally made of metal material, and a bendable soft edge 18 is punched out on one side plate 13, at least one section of the capillary tube 4 is sleeved with a protective sleeve 41, and the protective sleeve 41 is clamped on the fixed support 1 through the bendable soft edge 18; one end of the capillary tube 4 can be fixed, plays a guiding role, and can protect the capillary tube 4.

[0036] In addition, in the embodiment, the interval between the two side plates 13 of the fixed support 1 is just adapted to the width of the temperature control module 3, and the width of the side plate 13 is smaller than the width of the temperature control module 3, so that the fixed support 1 has a small volume, reduces the occupied space, and makes the liquid expansion type temperature controller more compact.

[0037] The above is the preferred scheme of the utility model, and the basic principle, main features and advantages of the utility model are displayed and described. Those skilled in the art should understand that the utility model is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification are only for illustrating the principle of the utility model. The utility model can have various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the appended claims and equivalents.

Claims

1. A simple, small, and manually resettable liquid expansion type temperature controller, characterized by: The fixing support is formed by continuously bending a metal and has a U-shaped groove, a coaxial membrane box and a preassembled temperature control module are connected to the U-shaped groove in sequence from the opening direction of the U-shaped groove, a temperature sensing cylinder is connected to the membrane box through a capillary tube, a through-break switch is arranged in the temperature control module and connected to a lead wire, a reset prevention assembly is arranged at one end of the temperature control module which is inserted into the U-shaped groove, the reset prevention assembly is abutted between the through-break switch and an action end of the membrane box, a manual reset rod is slidably connected to the other end of the temperature control module and abuts or is adjacent to the through-break switch, one end of the manual reset rod extends out of the temperature control module and forms a pressing end, the reset prevention assembly comprises a steel sheet capable of being deformed and an active push rod, the steel sheet and the active push rod are coaxially arranged, the action end of the membrane box is abutted or adjacent to the center of the steel sheet, and the active push rod is slidably connected in the temperature control module and abuts between the steel sheet and the through-break switch.

2. A simple and small hand reset liquid bulb type temperature controller according to claim 1, characterized in that: A fine adjustment bolt is threadedly connected to the base of the fixing support, the fine adjustment bolt abuts the fixed end of the membrane box, an axial through hole is formed in the inner end of the fine adjustment bolt, and a guide rod is extended from the fixed end of the membrane box and inserted into the axial through hole.

3. A simple and small hand reset liquid bulb type temperature controller according to claim 1, characterized in that: The temperature control module further comprises a main body shell, a steel sheet support block is attached to the mouth of the main body shell, the through-break switch is arranged between the steel sheet support block and the main body shell, a guide hole is formed in the steel sheet support block, the guide hole and the active push rod form a linear sliding fit, a cover is riveted to the outside of the steel sheet support block, the steel sheet is encapsulated between the cover and the steel sheet support block, and the cover is provided with a relief opening corresponding to the steel sheet.

4. A simple and small hand reset liquid bulb type temperature controller according to claim 3, characterized in that: A rod hole is formed in the bottom of the main body shell, the rod hole and the manual reset rod form a linear sliding fit, and a pressing head is fixedly connected to the pressing end of the manual reset rod.

5. A simple and small hand reset liquid bulb type temperature controller according to claim 3, characterized in that: The through-break switch comprises a movable contact and a stationary contact arranged in the main body shell, one end of the movable contact and the stationary contact is provided with a contact which elastically touches each other, the opposite side of the active push rod and the manual reset rod abuts on the movable contact, and the other end of the movable contact and the stationary contact is respectively connected with a rivet which extends out of the bottom of the main body shell and is respectively connected with a connecting tab.

6. A simple and compact manually resettable liquid bulb type temperature controller as claimed in claim 3 wherein: The two end heads of the fixing support are provided with a connecting fitting part, the opposite side of the temperature control module is provided with a fastening connecting part corresponding to the connecting fitting part, the temperature control module is connected to the fixing support through the fastening connecting part and the connecting fitting part, and one end of the temperature control module is inserted into the U-shaped groove.

7. A simple and compact manually resettable liquid bulb thermostat according to claim 6, characterized in that: The fastening connecting part comprises a connecting lug connected to the cover on the opposite side and a separate fixing bolt, and the connecting lug is provided with a through hole; the connecting fitting part comprises a flange bent outward from the side of the fixing support, the flange abuts on the connecting lug and is provided with a fastening screw hole corresponding to the through hole, the fixing bolt is arranged through the through hole and the fastening screw hole to realize the assembly connection of the temperature control module and the fixing support.

8. A simple and compact manually resettable liquid bulb type temperature controller as claimed in claim 1 wherein: The two side plates of the fixing support are respectively connected to the end of the base and are downwardly extended, the two side edges of the base are upwardly bent by continuous bending to form connecting feet, and the connecting feet are provided with mounting screw holes for assembling the liquid expansion type temperature controller.

9. A simple and compact hand reset liquid bulb type temperature controller according to claim 1, wherein: The fixed support is made of metal material in one piece, and a bendable soft edge is punched out on one side plate, at least one section of the capillary tube is sleeved with a protective sleeve, and the protective sleeve is clamped on the fixed support through the bendable soft edge.

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