Liquid expansion type automatic controller

Abstract

The utility model relates to a liquid expansion type automatic controller which comprises a base and a kick temperature controller connected to the base, an action cavity is defined between the kick temperature controller and the base, a diaphragm capsule is arranged in the action cavity, a capillary tube led out of the base is connected to the diaphragm capsule, and the other end of the capillary tube is connected with a temperature sensing cylinder; the kick temperature controller comprises a shell, an on-off switch and a bimetallic strip for controlling the on-off switch are arranged in the shell, and the bimetallic strip faces the action cavity and is adjacent to or abuts against the diaphragm capsule. According to the automatic controller, the characteristics of bimetallic strip materials are utilized, automatic resetting can be achieved, the switch rod made of ceramic materials can control the on-off switch to act through a mechanical lever or other transmission devices, and automatic resetting is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of temperature controller, specifically a kind of liquid expansion automatic controller. BACKGROUND

[0002] The existing liquid expansion temperature controller is a device for controlling temperature by the expansion and contraction of liquid. It uses the principle of expansion and contraction of liquid under temperature change to control temperature by controlling the volume change of liquid in the material. The common liquid expansion temperature controller drives the on-off action of switch by lever principle, and has the characteristics of accurate temperature control, long service life, stability and reliability, small temperature difference between start and stop, large temperature control adjustment range, large load current and easy installation, but still has the following defects: 1. Large size, which is limited to a certain extent. The base is made of ceramic. During production, there are often problems such as large size consistency difference, easy to break and deformation, which cannot meet the requirements of automatic production, resulting in large waste and low efficiency. 2. Manual reset is required. After the expansion agent in the temperature controller is heated and expanded, it can only push the spiral rod outward. The expansion of the spiral rod can control the electrical switch action through mechanical lever or other transmission devices. When reset is required, press the reset rod to reset. The structure is complex, so the liquid expansion temperature controller needs to be further improved. SUMMARY

[0003] The utility model aims at providing a kind of liquid expansion automatic controller with simple and reasonable structure, easy installation and stable structure.

[0004] A kind of liquid expansion automatic controller, comprising base and the jump temperature controller connected on base, the jump temperature controller is defined with action cavity between base, membrane box is arranged in the action cavity, membrane box is connected with capillary tube leading out the outside of base, the other end of capillary tube is connected with temperature sensing cylinder;The jump temperature controller includes a shell, on-off switch and bimetallic strip for controlling on-off switch are arranged in the shell, the bimetallic strip is adjacent to or abuts with membrane box and is arranged towards the action cavity.

[0005] The purpose of the utility model can also be solved by the following technical measures:

[0006] As a more specific scheme, the jump temperature controller is detachably connected to the base by a fastening unit.

[0007] As a further scheme, the center of the membrane box extends a push rod towards the bimetallic strip, and the membrane box is adjacent to or abuts with the bimetallic strip through the push rod.

[0008] As a further scheme, the jump temperature controller further includes a switch lever arranged in the shell, the switch lever is arranged adjacent to or abutting with the bimetallic strip and the on-off switch, and the switch lever and the push rod are arranged on the same center axis.

[0009] As a further scheme, the film box is provided with a connecting pipe extending out of the base, the connecting pipe is connected with one end of the capillary tube, and a clasp is arranged at the joint position of the connecting pipe and the capillary tube.

[0010] As a further scheme, the snap-action temperature controller further comprises a cover riveted on the shell, the bimetallic strip is packaged between the cover and the shell, and a coaxial opening is arranged on the cover, and the central part of the bimetallic strip is exposed to the action cavity through the opening.

[0011] As a further scheme, the base is provided with a temperature controller mounting seat, the temperature controller mounting seat is provided with an assembly opening matched with the snap-action temperature controller and a connecting via, the base is provided with a base connecting hole corresponding to the connecting via, a connecting lug extends from the opposite side of the cover, the connecting lug is provided with a cover connecting hole corresponding to the connecting via, and the snap-action temperature controller is assembled and connected with the base by penetrating the cover connecting hole, the connecting via and the base connecting hole through the fastening unit.

[0012] As a further scheme, the on-off switch comprises a movable contact and a fixed contact arranged in the shell, the movable contact and the fixed contact are elastically connected, the switch rod is adjacent to or abuts against the movable contact, and the movable contact and the fixed contact are respectively riveted with two wire terminal pieces arranged outside the shell.

[0013] As a further scheme, the temperature controller mounting seat is matched with the shape of the base, and the outer wall surface of the base extends downward on the opposite side of the lower foolproof bump, and the outer wall surface of the temperature controller mounting seat extends upward on the opposite side of the upper foolproof bump which is the same as the shape of the lower foolproof bump.

[0014] As a further scheme, the base is provided with a plurality of support bosses extending downward from the bottom surface thereof, and the support bosses are provided with internally threaded connecting holes.

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

[0016] 1. Small volume, low cost, using high-temperature material to manufacture the base has the advantages of high precision, fireproof and flame retardant, small deformation coefficient, low price, cost reduction and the like.

[0017] 2. The bimetallic strip material can automatically reset, the switch rod made of ceramic material can control the on-off switch action through a mechanical lever or other transmission device to realize automatic reset.

[0018] 3. The film box and the base are integrally formed by riveting, the snap-action temperature controller is fixed on the base by bolts, which can play the roles of installation positioning and supporting, and the installation is simple and reliable, and the problem of bolt loosening caused by excessive plugging force of the temperature controller in use is prevented. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 It is an embodiment structure schematic view of the utility model.

[0020] Fig. 2 It is an automatic controller section structure schematic view of the utility model.

[0021] Fig. 3 It is an automatic controller section structure schematic view of the utility model.

[0022] Fig. 4 It is an automatic controller section structure schematic view of the utility model. DETAILED DESCRIPTION

[0023] The utility model is further explained below in connection with the drawings and embodiments.

[0024] As Figs. 1 to 4 The utility model discloses a liquid expansion type automatic controller, including base 1 and the jump temperature controller 2 of connecting on base 1, the jump temperature controller 2 with base 1 between define the action cavity 101, be equipped with diaphragm capsule 3 in the action cavity 101, diaphragm capsule 3 is connected with the capillary 4 of leading out base 1 outside, the other end of capillary 4 is connected with temperature sensing cylinder 5, the jump temperature controller 2 includes the casing 21, be equipped with on-off switch 22 and the bimetallic strip 23 of control on-off switch 22 in casing 21, the bimetallic strip 23 is towards action cavity 101, and with diaphragm capsule 3 adjacent or abutting setting.

[0025] This automatic controller utilizes the material characteristics of bimetallic strip 23, can automatically reset, the switch rod 24 made of ceramic material, will pass through mechanical lever or other transmission device control on-off switch 22 action, realizes automatic reset.

[0026] The base 1 is made of high-temperature-resistant material, the high-temperature-resistant material includes plastic, the base 1 is small in volume, low in cost, uses high-temperature-resistant material to make base 1, has the advantages of high precision, fire resistance, small deformation coefficient, low price, cost reduction and the like.

[0027] In addition, diaphragm capsule 3 and base 1 are integrally formed by riveting, and the jump temperature controller 2 is fixed on base 1 by bolts, which can play the role of installation positioning and supporting, and is simple, reliable and prevents the bolts from loosening due to excessive force during use.

[0028] The jump temperature controller 2 is detachably connected to the base 1 through a fastening unit, so that the jump temperature controller 2 forms an independent module, which is convenient to install and replace.

[0029] The push rod 31 extends from the center of the membrane box 3 to the bimetallic strip 23, and the membrane box 3 is arranged adjacent to or abutting the bimetallic strip 23 through the push rod 31; the push rod 31 reacts the deformation action of the membrane box 3, so that the membrane box 3 and the bimetallic strip 23 can maintain a distance, and the center position of the bimetallic strip 23 is pushed by the push rod 31, so that the bimetallic strip 23 deforms more crisp.

[0030] The snap temperature controller 2 further comprises a switch rod 24 arranged in the shell 21, the switch rod 24 is arranged adjacent to or abutting the bimetallic strip 23 and the on-off switch 22, and the switch rod 24 is arranged on the same center axis as the push rod 31; so that the deformed bimetallic strip 23 can quickly push the switch rod 24 to move to disconnect the on-off switch 22.

[0031] The membrane box 3 is provided with a connecting pipe 32 extending out of the base 1, the connecting pipe 32 is connected with one end of the capillary tube 4, and the connecting pipe 32 and the capillary tube 4 are provided with a clasp 6 at the joint position; this structure can fix the capillary tube 4.

[0032] The snap temperature controller 2 further comprises a cover 25 riveted on the shell 21, the bimetallic strip 23 is encapsulated between the cover 25 and the shell 21, and the cover 25 is provided with a coaxially arranged opening 251, and the center part of the bimetallic strip 23 is exposed to the action cavity 101 through the opening 251; the cover 25 is mainly used for fixing the bimetallic strip 23, and the exposed bimetallic strip 23 can be directly contacted and held by the push rod 31.

[0033] The base 1 is provided with a temperature controller mounting seat 7, the temperature controller mounting seat 7 is provided with a mounting opening 71 matched with the snap temperature controller 2 and a connecting via hole 72, and the base 1 is provided with a base connecting hole 102 corresponding to the connecting via hole 72; the cover 25 is extended with a connecting lug 26 on the opposite side, the connecting lug 26 is provided with a cover connecting hole 27 corresponding to the connecting via hole 72, and the snap temperature controller 2 and the base 1 are assembled and connected through the cover connecting hole 27, the connecting via hole 72 and the base connecting hole 102; the structure is simple, convenient and fast to assemble, and is suitable for automatic production needs.

[0034] The on-off switch 22 comprises a movable contact 28 and a fixed contact 29 arranged in the shell 21, the movable contact 28 and the fixed contact 29 are elastically connected, the switch rod 24 is adjacent to or abutting the movable contact 28, and the movable contact 28 and the fixed contact 29 are respectively riveted with two wire terminal pieces 210 arranged outside the shell 21; it belongs to the prior art, which will not be described in detail here.

[0035] The temperature controller mounting seat 7 is matched with the shape of the base 1, the outer wall surface of the temperature controller mounting seat 7 extends the upper foolproof bump 73 which is same with the shape of the lower foolproof bump 11 on the side of the base 1, the efficiency of the temperature controller mounting seat 7 installed to the base 1 is improved, the connecting via hole 72 on the temperature controller mounting seat 7 is quickly aligned with the base connecting hole 102 on the base 1.

[0036] The base 1 is provided with a plurality of support bosses 74 extending below the bottom surface, and the support bosses 74 are provided with internally threaded connecting holes 741; the liquid expansion type automatic controller can be installed on the use equipment through cooperation of the internally threaded connecting holes 741 and the threaded columns.

[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 by the above examples, and the above examples 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. These changes and improvements all fall within the scope of the utility model, and the scope of the utility model is defined by the appended claims and equivalents.

Claims

1. A hydraulic expansion automatic controller, characterized in that... The device includes a base and a snap-action thermostat connected to the base. An actuation chamber is defined between the snap-action thermostat and the base. A diaphragm is located within the actuation chamber, and a capillary tube leading out of the base is connected to the diaphragm. The other end of the capillary tube is connected to a temperature sensing cylinder. The snap-action thermostat includes a housing and a switch rod disposed within the housing. An on / off switch and a bimetallic strip controlling the on / off switch are located within the housing. The switch rod is positioned between the on / off switch and the bimetallic strip. A push rod extends from the center of the diaphragm towards the bimetallic strip, and the diaphragm is adjacent to or abuts against the bimetallic strip via the push rod. The on / off switch includes a moving contact and a fixed contact disposed within the housing. The moving and fixed contacts are elastically connected. The switch rod is adjacent to or abuts against the moving contact. Two terminal pieces are riveted to the moving and fixed contacts, respectively, and are located outside the housing.

2. The hydraulic expansion automatic controller according to claim 1, characterized in that... The snap-on temperature controller is detachably connected to the base via a fastening unit.

3. The hydraulic expansion automatic controller according to claim 1, characterized in that... The switch rod and the push rod are set on the same central axis.

4. The hydraulic expansion automatic controller according to claim 1, characterized in that... The membrane box is provided with a connecting tube extending out of the base. The connecting tube is connected to one end of the capillary tube, and a retaining ring is provided at the joint position of the connecting tube and the capillary tube.

5. A hydraulic expansion automatic controller according to claim 1, characterized in that... The snap-on temperature controller also includes a cover riveted to the housing, the bimetallic strip is encapsulated between the cover and the housing, and the cover has a coaxially arranged opening, the central part of the bimetallic strip is exposed to the actuation chamber through the opening.

6. A hydraulic expansion automatic controller according to claim 5, characterized in that... The base is provided with a thermostat mounting seat, which has an assembly port and a connection through hole adapted to the snap-action thermostat. The base has a base connection hole corresponding to the connection through hole. The cover extends to the opposite side with a connecting ear, which has a cover connection hole corresponding to the connection through hole. The snap-action thermostat is assembled and connected to the base by passing a fastening unit through the cover connection hole, the connection through hole and the base connection hole.

7. A hydraulic expansion automatic controller according to claim 6, characterized in that... The shape of the thermostat mounting base matches the shape of the base. The outer wall of the base extends to the side with a lower anti-fooling protrusion, and the outer wall of the thermostat mounting base extends to the side with an upper anti-fooling protrusion of the same shape as the lower anti-fooling protrusion.

8. A hydraulic expansion automatic controller according to claim 1, characterized in that... The base is provided with several support bosses extending below its bottom surface, and the support bosses are provided with internal threaded connection holes.

Images