CN209252502U - A sliding automatic temperature control steam valve - Google Patents

Abstract

The utility model discloses an automatic control by temperature change steam valve of slidingtype, include: the main valve body comprises a base body and a closing piece arranged on the base body in a sliding mode, and an exhaust passage is formed in the base body; the driving device comprises a shape memory metal piece which can generate shape change along with the change of temperature, and the driving device can drive the closing piece to slide through the shape change of the shape memory metal piece so that the closing piece can control the opening and closing of the exhaust passage and/or the flow rate. The utility model discloses in, the deformation that shape memory metalwork produced along with the change of temperature can drive the closure piece and slide then control opening and close and/or the flow size of exhaust passage, can come opening and close and the flow size of this steam valve of automatic control according to the temperature from this, can effective reduce cost, also be difficult for breaking down, simple structure is reliable, also is convenient for wash facilitate the use.

Description

A sliding automatic temperature control steam valve

technical field

The utility model relates to a steam valve.

Background technique

Steam valves are often used in rice cookers, pressure cookers, etc. Existing steam valves usually need to be manually switched or adjusted to deflate and maintain pressure, which is inconvenient to use, and some rice cookers, pressure cookers, etc. will use pressure detectors to detect The pressure and automatic control of the opening and closing of the steam valve or the flow rate, although it is convenient to use to a certain extent, ensures the safety of use, and avoids safety accidents due to excessive pressure, but the structure is more complicated, the cost is higher, and it is not easy to popularize and use. , The corresponding electronic components such as controllers and detectors are also prone to failure and are not easy to clean.

Utility model content

In order to solve the above problems, the purpose of this utility model is to provide a simple and reliable structure, easy to use sliding automatic temperature control steam valve.

The technical scheme that the utility model adopts for solving its technical problem is:

A sliding automatic temperature-controlled steam valve, comprising:

The main valve body, the main valve body includes a base body and a closing member slidably arranged on the base body, and the base body is provided with an exhaust passage;

The driving device is arranged on the main valve body. The driving device includes a shape-memory metal piece that can change shape with temperature, and the driving device can drive the shape-memory metal piece through the shape change. The closing part slides so that the closing part can control the opening and closing and/or the flow rate of the exhaust channel.

Preferably, the driving device can drive the sealing member to slide in the direction of opening the exhaust channel or increasing the flow rate of the exhaust channel through the shape change of the shape memory metal part as the temperature rises. The above-mentioned driving device can drive the sealing member to slide in the direction of closing the exhaust channel or reducing the flow rate of the exhaust channel through the shape change of the shape memory metal part as the temperature drops.

Preferably, the shape memory metal piece is in the shape of a spring.

Preferably, the driving device further includes an elastic reset member, and the thrust direction of the elastic reset member to the closure member is opposite to that of the shape memory metal member when it deforms.

Preferably, the base has a first installation platform and a second installation platform, and the closure has a third installation platform, and the third installation platform is located between the first installation platform and the second installation platform, and the The shape memory metal part is located between the first installation platform and the third installation platform, and its two ends respectively abut against the first installation platform and the third installation platform to push the closure to slide; between the platform and the third installation platform and its two ends respectively abut against the second installation platform and the third installation platform to push the closure to slide.

Preferably, the sliding direction of the closure member relative to the base body is perpendicular to the airflow direction in the exhaust channel.

Preferably, the closure member can be slid back and forth on the base body, the base body is provided with guide grooves or guide parts, and the closure member is correspondingly provided with guide parts or guide grooves, and the guide grooves are parallel to In the front-to-back direction, the guide part is slidably disposed in the guide groove to limit the longitudinal movement of the closure member relative to the base body.

The beneficial effects of the utility model are: in the utility model, the deformation of the shape-memory metal part with the change of temperature can drive the sealing part to slide and then control the opening and closing of the exhaust channel and/or the flow rate, so that it can be automatically adjusted according to the temperature. Controlling the opening and closing and flow of the steam valve does not require additional temperature detection devices or pressure detection devices and corresponding drivers, which can effectively reduce costs and prevent failures. The structure is simple and reliable, and it is also easy to clean and use.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail.

Fig. 1 is the overall structural diagram of the utility model;

Fig. 2 is an exploded view of the utility model;

Fig. 3 is a structural diagram of the utility model in the state of closing the exhaust passage;

Fig. 4 is a structural diagram of the utility model in the state of opening the exhaust passage.

Detailed ways

Referring to Figures 1 to 4, a sliding automatic temperature-controlled steam valve includes: a main valve body, the main valve body includes a base body 11 and a closing member 12 slidingly arranged on the base body 11, and the base body 11 is provided with an exhaust passage 13 The driving device is arranged on the main valve body. The driving device includes a shape-memory metal piece 21 that can change shape with the change of temperature. The driving device can drive the closure 12 to slide through the shape change of the shape-memory metal piece 21 to make the closure 12 can control the opening and closing and/or flow rate of the exhaust passage 13 . In the utility model, the deformation of the shape memory metal part 21 with the change of temperature can drive the closure part 12 to slide and then control the opening and closing of the exhaust channel 13 and/or the flow rate, so that the steam valve can be automatically controlled according to the temperature. Opening and closing and flow rate, there is no need to install additional temperature detection device or pressure detection device and corresponding driver, which can effectively reduce costs, and is not prone to failure. The structure is simple and reliable, and it is also easy to clean and use.

Shape memory metals, also known as memory metals or shape memory alloys, can spontaneously change shape at different temperatures, usually Au-Cd alloy, Ag-Cd alloy, Cu-Zn alloy, Cu-Zn-Al alloy, Cu-Zn-Sn alloy, Cu-Zn-Si alloy, Cu-Sn alloy, Cu-Zn-Ga alloy, In-Ti alloy, Au-Cu-Zn alloy, NiAl alloy, Fe-Pt alloy, Ti-Ni alloy, Ti-Ni- Materials such as Pd alloys, Ti-Nb alloys, U-Nb alloys and Fe-Mn-Si alloys have two-way memory effects, which are widely used in this field and will not be described in detail here.

In this embodiment, the driving device can drive the sealing member 12 to slide in the direction of opening the exhaust passage 13 or increasing the flow rate of the exhaust passage 13 through the shape change of the shape memory metal part 21 as the temperature rises. The shape change of the memory metal part 21 as the temperature drops drives the sealing part 12 to slide in the direction of closing the exhaust channel 13 or reducing the flow rate of the exhaust channel 13 . In this way, under the drive of the driving device, when the temperature is low, the sealing member 12 can automatically close the exhaust passage 13 or reduce the exhaust passage 13, and when applied to a pressure cooker, an electric rice cooker, etc., an airtight or relatively airtight space can be formed And maintain internal pressure or promote internal pressure, improve cooking effect, when temperature is low, closure 12 can open exhaust channel 13 automatically or increase exhaust channel 13 flow to carry out pressure relief, thus can automatically maintain pressure at Within the set range, the cooking efficiency and cooking effect are improved, the explosion caused by excessive pressure is avoided, and the safety of use is guaranteed. In the application, the deformation temperature range of the shape-memory metal part 21 can be flexibly adjusted according to needs. For example, when applied to an electric cooker, the shape-memory metal part 21 can change from a low-temperature phase shape to a high-temperature phase shape in the range of 65°C to 85°C. Deformation is to change the steam valve from the closed state to the open state, so that the exhaust passage 13 can be closed or the flow of the exhaust passage 13 can be reduced during the heating process to achieve pressure maintenance, reduce steam loss, and enter the steam faster. In the boiling stage, the cooking efficiency is improved. When the temperature reaches above 85°C, the exhaust channel 13 can be automatically opened or the flow rate of the exhaust channel 13 can be increased to relieve pressure, so as to avoid the risk of explosion due to excessive pressure, and the temperature can be lowered after cooking is completed. When it enters the heat preservation stage below 65°C, it can automatically close the exhaust channel 13 again or reduce the loss of the exhaust channel 13, reduce the loss of steam, strengthen the effect of pressure maintaining and heat preservation, make the rice grains more uniform and plump with moisture, and improve cooking efficiency. Of course, in practical applications, according to actual needs, the steam valve can also open the exhaust passage 13 for exhaust at low temperature, and close the exhaust passage 13 for pressurization at high temperature, which is not limited thereto.

The drive device can change the flow rate of the exhaust channel 13 by controlling the sliding distance of the closure member 12 to change the degree of occlusion of the outlet or inlet of the exhaust channel 13, or by changing the channel cross-sectional size of a certain place inside the exhaust channel 13. to change the size of the flow.

In this embodiment, the shape-memory metal part 21 is in the shape of a spring, which has a simple and reliable structure, and can provide a large driving force, which is convenient for processing and use. Of course, in practical applications, the shape-memory metal part 21 can also be in the shape of a folded plate, " Any other suitable shape such as Z "shaped plate shape or rod shape is not limited thereto.

The driving device also includes an elastic reset member 22, the thrust direction of the elastic reset member 22 to the closure member 12 is opposite to the thrust direction of the closure member 12 when the shape memory metal member 21 is deformed, so that only the elastic return member 22 and the shape memory metal member can be used 21 is deformed to push the closing part 12 to move, and the shape memory metal part 21 can only abut against the base 11 and the closing part 12 without fixed connection, which can effectively facilitate processing and installation. In this embodiment, the elastic return member 22 adopts a return spring, which has a simple and reliable structure, and is easy to install and use. Of course, in practical applications, the elastic return member 22 can also use extension springs, gas springs, elastic pull cords, elastic rubber parts, etc. Other commonly used elastic structures are not limited thereto.

In this embodiment, the substrate 11 has a first installation platform 31 and a second installation platform 32, and the closure member 12 has a third installation platform 33, and the third installation platform 33 is located between the first installation platform 31 and the second installation platform 32. Between them, the shape memory metal part 21 is located between the first installation platform 31 and the third installation platform 33, and its two ends respectively abut against the first installation platform 31 and the third installation platform 33 to push the closing member 12 to slide; the elastic reset member 22 is located between the second installation platform 32 and the third installation platform 33 and its two ends abut against the second installation platform 32 and the third installation platform 33 respectively to push the closure member 12 to slide. The structure is simple, the shape-memory metal part 21 and the elastic reset part 22 both adopt the abutting method to push the closing part 12 to move relative to the base body 11, and there is no need to connect the two ends of the shape-memory metal part 21 and the elastic reset part 22 with the base body 11 and the closure The pieces 12 are fixedly connected together, which effectively facilitates processing and assembly.

In practical applications, the two ends of the shape memory metal piece 21 can also be fixedly connected to the base 11 and the closure 12 , and the movement of the closure 12 can be pushed and pulled only by the deformation of the shape memory metal piece 21 .

The sliding direction of the closure member 12 relative to the base body 11 is perpendicular to the airflow direction in the exhaust passage 13, which can prevent the pressure of the steam from pushing the closure member 12 to slide and then open or close the exhaust passage 13 by itself, so that the driving device can effectively control the exhaust passage. 13 opening and closing and/or flow control, which is safer and more reliable.

The closure member 12 is provided on the base body 11 so as to slide back and forth. The base body 11 is provided with a guide groove 42 or a guide portion 41. The closure member 12 is correspondingly provided with a guide portion 41 or a guide groove 42. The guide grooves 42 are parallel to each other. In the front-to-back direction, the guide part 41 is slidably arranged in the guide groove 42 to limit the longitudinal movement of the closure member 12 relative to the base body 11, and the restriction of the guide part 41 by the guide groove 42 can prevent the closure member 12 from being affected by airflow or air pressure. The longitudinal deflection and offset are generated under the action of the utility model, so that the utility model can withstand greater pressure and is safer and more reliable. In this embodiment, the two side edges of the closure member 12 are used as the guide portion 41, and the guide groove 42 is correspondingly provided on the base body 11. Of course, in practical applications, the positions of the two can be interchanged.

The above descriptions are only the preferred implementation modes of the present utility model, as long as the technical solutions that achieve the purpose of the utility model by basically the same means all fall within the scope of protection of the utility model.

Claims (7)

1. a kind of automatic temperature-controlled steam valve of slidingtype characterized by comprising

Main valve body, the main valve body include matrix (11) and the closure member (12) being slidably arranged on matrix (11), matrix (11) exhaust passage (13) are provided on；

Driving device is arranged on main valve body, and the driving device includes being capable of variation with temperature generation change in shape Shape memory metal part (21), the driving device can be driven by the change in shape of the shape memory metal part (21) The closure member (12) slide so that closure member (12) can control the exhaust passage (13) opening and closing and/or flow it is big It is small.

2. the automatic temperature-controlled steam valve of a kind of slidingtype according to claim 1, which is characterized in that the driving device energy Enough by the shape memory metal part (21) as temperature increases described closure member (12) court of the change in shape generated driving It opens the exhaust passage (13) or increases the direction sliding of exhaust passage (13) flow, the driving device can pass through institute Closure member (12) described in the change in shape driving that shape memory metal part (21) is generated with temperature decline is stated towards described in closing Exhaust passage (13) or the direction sliding for reducing exhaust passage (13) flow.

3. the automatic temperature-controlled steam valve of a kind of slidingtype according to claim 1, which is characterized in that the shape memory gold Belonging to part (21) is in spring like.

4. the automatic temperature-controlled steam valve of a kind of slidingtype according to claim 1, which is characterized in that the driving device is also Including dynamic clamping head and quiet clamping head (22), thrust direction and shape memory gold of the dynamic clamping head and quiet clamping head (22) to the closure member (12) Belong to opposite to the thrust direction of closure member (12) when part (21) deformation.

5. the automatic temperature-controlled steam valve of a kind of slidingtype according to claim 4, which is characterized in that on the matrix (11) With the first erecting bed (31) and the second erecting bed (32), there are third erecting bed (33) on closure member (12), the third Between the first erecting bed (31) and the second erecting bed (32), the shape memory metal part (21) is located at erecting bed (33) Between first erecting bed (31) and third erecting bed (33) and its both ends respectively with the first erecting bed (31) and third erecting bed (33) it abuts to push closure member (12) to slide；The dynamic clamping head and quiet clamping head (22) is located at the second erecting bed (32) and third installation Between platform (33) and its both ends abut respectively with the second erecting bed (32) and third erecting bed (33) to push closure member (12) sliding It is dynamic.

6. the automatic temperature-controlled steam valve of a kind of slidingtype according to claim 1, which is characterized in that closure member (12) phase To the glide direction of matrix (11) vertically with the airflow direction in exhaust passage (13).

7. the automatic temperature-controlled steam valve of a kind of slidingtype according to claim 6, which is characterized in that the closure member (12) It is capable of sliding back and forth to be arranged on matrix (11), guide channel (42) or guidance part (41), closure member are provided on matrix (11) (12) guidance part (41) or guide channel (42) are correspondingly provided on, the guide channel (42) is parallel to front-rear direction, described Guidance part (41) is slidably arranged in the longitudinal movement in the guide channel (42) to limit closure member (12) with respect to matrix (11).