CN210739489U

CN210739489U - Temperature control valve with upper and lower fire discharge control function

Info

Publication number: CN210739489U
Application number: CN201921115076.3U
Authority: CN
Inventors: 李雪波
Original assignee: Ningbo Laite Gas Stoves Co ltd
Current assignee: Ningbo Laite Gas Stoves Co ltd
Priority date: 2019-07-16
Filing date: 2019-07-16
Publication date: 2020-06-12
Anticipated expiration: 2029-07-16

Abstract

A temperature control valve with an upper fire discharge and lower fire discharge control function comprises a valve body with an air inlet channel, a first air outlet channel and a second air outlet channel, wherein a valve core is arranged in the valve body, a vent cavity is arranged at the lower part of the valve core, a fire hole is formed in the side wall of the vent cavity, and a knob rod is arranged on the valve body in a penetrating manner; a valve plate is also arranged in the valve body; the method is characterized in that: the valve plate is positioned below the valve core, the valve plate can be driven to move by the rotation of the valve core, and the outer peripheral wall of the valve core is provided with an air outlet barrier groove; when the knob rod and the valve core are in the original state, the air inlet channel is blocked with the first air outlet channel and the second air outlet channel; in the process that the knob rod drives the valve core to rotate clockwise from the original state, the air inlet channel can be communicated with the second air outlet channel through the air outlet barrier groove, and the fire hole is always blocked from the air inlet channel; and in the process that the knob rod drives the valve core to rotate anticlockwise from the original state, the air inlet channel can be communicated with the first air outlet channel through the fire hole, and the air inlet channel cannot be communicated with the second air outlet channel through the air outlet barrier groove all the time. The temperature control valve does not need to additionally arrange a gear clutch structure, simplifies the structure and greatly reduces the cost.

Description

Temperature control valve with upper and lower fire discharge control function

Technical Field

The utility model relates to a gas valve especially relates to a temperature-sensing valve that is fit for having of gas oven and goes up fire grate control function.

Background

Some gas oven inside have two baking chamber that the interval set up from top to bottom, are equipped with a fire row in every baking chamber respectively, and the lower fire row that is located lower part baking chamber generally has the fire control possibility, and the fire row fire intensity of the last fire that is located upper portion baking chamber is certain, generally for big fire. Because of the fire row is sheltered from completely by the box of oven down, it is then visible to go up the fire row, consequently when setting a fire for down row ignition, can't observe with eyes whether to ignite successfully, if it is unsuccessful to ignite many times, because of there is the gas release in the ignition process, when the ignition is successful next time, can be because the gas content of fire row surrounding air is great down, can have the plosives of "popping at first" when igniting, there is certain potential safety hazard, some countries are out of the throne national standard, can not have the aforesaid condition to take place. The ignition row can directly observe whether the ignition is successful, so that the condition does not exist. Such a gas oven is disclosed in the chinese utility model patent No. ZL201220709936.8 (publication No. CN203059420U), a dual chamber gas oven consisting of flow deflectors.

How to design a gas valve which ensures the efficiency of fire grate ignition is a technical problem which needs to be solved urgently by the technical personnel in the field. Therefore, the applicant applies for a Chinese utility model patent with a patent number of CN201821212627.3 (publication number of CN208831808U) 'gas valve capable of controlling two fire rows and having a long open fire function'. A clutch structure is required to be arranged between a knob rod and a valve core of the gas valve, a driving gear which can rotate along with the knob rod is sleeved on the knob rod, the knob rod can slide up and down relative to the driving gear, only one section of driving arc-shaped tooth part is arranged on the driving gear, and the other section of driving gear is a toothless arc-shaped surface; the valve core is sleeved with a driven gear which can rotate along with the valve core, the driven gear only has one section of driven arc-shaped tooth part, and the other section of the driven gear is a toothless arc-shaped surface; the driving gear and the driven gear form a clutch structure. The setting of separation and reunion structure directly leads to the cost of valve to be high, and separation and reunion gear structure requires high to product precision and assembly, lacks the competitiveness.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to above-mentioned prior art current situation and provide a more reasonable and simple temperature-sensing valve who has upper and lower fire grate control function of structural design.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a temperature control valve with an upper fire discharge and lower fire discharge control function comprises a valve body, wherein an air inlet channel, a first air outlet channel and a second air outlet channel are arranged in the valve body; a valve plate for controlling the air outlet quantity of the first air outlet channel is also arranged in the valve body; the method is characterized in that: the valve plate is positioned below the valve core, the valve plate can be driven to move by the rotation of the valve core, and an air outlet barrier groove is formed in the outer peripheral wall of the valve core and is blocked with the vent cavity; when the knob rod and the valve core are in the original state, the air inlet channel is blocked with the first air outlet channel and the second air outlet channel; in the process that the knob rod drives the valve core to rotate clockwise from the original state, the air inlet channel can be communicated with the second air outlet channel through the air outlet barrier groove, and meanwhile, the fire hole is always blocked from the air inlet channel; in the process that the knob rod drives the valve core to rotate anticlockwise from the original state, the air inlet channel can be communicated with the first air outlet channel through the fire hole, and meanwhile, the air inlet channel cannot be communicated with the second air outlet channel through the air outlet barrier groove all the time.

As a specific preferred gas path control mode, when the knob lever drives the valve core to rotate clockwise to a first angle position from an original state, the gas outlet amount of the gas inlet channel communicated with the second gas outlet channel through the gas outlet barrier groove is the largest; when the knob rod drives the valve core to rotate anticlockwise to a second angle position from an original state, the air inlet channel is just communicated with the first air outlet channel through the fire hole; and in the process that the knob rod continues to drive the valve core to rotate anticlockwise from the second angle to the third angle, the valve plate is driven to move towards the direction of increasing the air outlet quantity of the air outlet channel.

Preferably, the middle part of the air outlet channel is provided with a valve port, the valve port is positioned right below the valve core, the valve plate is constrained below the valve port and can move up and down, the opening degree of the valve port is increased by the downward movement of the valve plate, and the opening degree of the valve port is reduced by the upward movement of the valve plate; in the process of anticlockwise rotating of the valve core, the valve plate is driven to move downwards by the rotation of the valve core; in the process of clockwise rotation of the valve core, the valve plate is driven to move upwards by the rotation of the valve core. The valve plate is designed to be directly linked with the valve core by the structure, so that the valve plate is convenient to assemble and enables a product to be miniaturized.

As an improvement, an auxiliary air passage is arranged in the valve body, an air inlet of the auxiliary air passage is positioned above the valve port, an air outlet of the auxiliary air passage is positioned below the valve port, and when the valve plate is closed, the gas coming out of the fire hole can only be communicated with an outlet end of the air outlet passage through the auxiliary air passage. When the fire discharge temperature exceeds a set value, the valve plate can close the valve port, and the air flow passing through the air outlet channel can only flow out from the outlet end of the air outlet channel through the auxiliary air channel, so that the fire is kept in a minimum fire state.

Preferably, an adjusting fluid for adjusting the air output of the auxiliary air passage is vertically arranged in the auxiliary air passage in a penetrating manner. The setting of the adjusting flow can adjust the fire behavior of the minimum fire of the fire row.

The valve block is further improved, the valve block is fixed in the middle of an adjusting rod, the upper portion of the adjusting rod is inserted into an inner cutting groove in the lower end of a valve core, the valve core can move up and down relative to the adjusting rod, the valve core can rotate to drive the adjusting rod to rotate, a threaded hole with a downward opening is formed in the bottom of the adjusting rod, a threaded column is fixed at the bottom in the valve body, and the threaded column is located below the adjusting rod and is inserted into the threaded hole in a threaded mode. The inner cutting groove of the valve core is connected with the adjusting rod, so that the adjusting rod can be driven to rotate, the structure of the valve core is fully utilized, the structure is simplified, the valve block is driven to move by the aid of the principle of thread transmission because the adjusting rod is in rotating operation, the valve block is driven to move up and down by the aid of rotation of the adjusting rod, and the design is more reasonable. In order to enable the temperature control valve to have an automatic temperature control adjusting function, preferably, a power part is fixedly arranged at the bottom of the valve body in a penetrating mode, the threaded column is arranged on the power part, the power part can move up and down through expansion with heat and contraction with cold, and an auxiliary spring is arranged below the valve plate. The power part is connected with the temperature sensing rod through the heat conducting part, the temperature sensing oil is arranged in the power part, the power part is driven to move up and down through expansion with heat and contraction with cold, when the temperature of the fire bank reaches a certain temperature, the temperature sensing rod conducts heat to the temperature sensing oil through the heat conducting part, the power part moves up and down under the pushing of the temperature sensing oil, the up-and-down position of the valve block is finally adjusted, and the air output of the first air outlet channel is controlled. The auxiliary spring is used for fixing the position of the valve body, so that the valve block is always fixed on the upward movement trend of the relative adjusting rod, and the valve port can be effectively blocked by the valve block.

Preferably, the gas outlet barrier groove is positioned on the side wall of the valve core above the vent cavity and is arc-shaped, so that the depth of the gas outlet barrier groove can be very deep, and a large gas outlet amount is ensured; the fire hole is located the below of giving vent to anger and rampart groove and is the arc, can be better with the cooperation of fire hole.

The valve body comprises a valve seat and a valve cover fixed on the valve seat, wherein a limiting groove and an upper limiting boss are arranged on the inner top surface of the valve cover, a lower limiting boss is arranged on the top surface of an inner hole of the valve seat, and a side-convex limiting block is fixed on the knob rod; when the knob rod is in an original state, the limiting block keeps the trend of being clamped into the limiting groove; one side of the upper limiting boss and one side of the lower limiting boss are matched with the limiting block so as to limit the maximum angle position of the knob rod rotating clockwise at the original position; the other sides of the upper limiting boss and the lower limiting boss are matched with the limiting block so as to limit the maximum angle position of the knob rod rotating anticlockwise at the original position. The rotation angle of the valve core can be accurately limited.

In order to ensure that the temperature control valve is safer to operate, a safety electromagnetic valve is arranged in the valve body, the safety electromagnetic valve and the valve core are arranged at intervals and are positioned in the air inlet channel, an ejector rod penetrates through the valve body, the ejector rod can trigger the safety electromagnetic valve when moving downwards, a spring enabling the ejector rod to keep moving upwards is sleeved on the ejector rod, an energy driving plate is sleeved on the knob rod, the driving plate can move axially along with the knob rod, and the knob rod can rotate around the axis of the driving plate relative to the driving plate. Only if the knob rod presses down the safety electromagnetic valve, the air source main switch can be opened, if the knob rod is not pressed down in place, the safety electromagnetic valve is not triggered, and no fuel gas flows out even if the valve core rotates.

Compared with the prior art, the utility model has the advantages of: through the special design of the valve core, namely, the peripheral wall of the valve core is provided with the air outlet barrier groove, the air outlet barrier groove is blocked with the vent cavity, the air inlet channel can be communicated with the second air outlet channel through the air outlet barrier groove in the clockwise rotation process of the valve core, meanwhile, the fire hole is always blocked with the air inlet channel, and the upper fire row is ignited; in the process of anticlockwise rotating of the valve core, the air inlet channel can be communicated with the first air outlet channel through the fire hole, meanwhile, the air inlet channel cannot be communicated with the second air outlet channel through the air outlet barrier groove all the time, and the lower fire is discharged and ignited. The valve plate is arranged below the valve core, and the valve plate can be driven to move by the rotation of the valve core, so that a gear clutch structure is not required to be additionally arranged, the structure is simplified, and the cost is greatly reduced.

Drawings

Fig. 1 is a schematic perspective view of an embodiment of the present invention;

fig. 2 is a schematic perspective view of an embodiment of the present invention;

fig. 3 is a first cross-sectional view of the embodiment of the present invention;

fig. 4 is a second cross-sectional view of the embodiment of the present invention;

fig. 5 is a schematic perspective view of a valve element in a valve according to an embodiment of the present invention;

fig. 6 is a schematic perspective view of a valve element in a valve according to an embodiment of the present invention;

fig. 7 is a schematic perspective view of a valve seat in a valve according to an embodiment of the present invention;

fig. 8 is a schematic perspective view of a valve cover in a valve according to an embodiment of the present invention;

fig. 9 is a schematic perspective view of a knob stem with a rotation limiting disc in a valve according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 9, it is a preferred embodiment of the present invention.

A temperature control valve with a function of controlling the fire going up and down comprises a valve body 1 internally provided with an air inlet channel 1a, a first air outlet channel 1b and a second air outlet channel 1c, wherein the first air outlet channel 1b generally supplies air for the fire going down, and the second air outlet channel 1c supplies air for the fire going down. A rotatable valve core 2 is arranged in the valve body 1, a vent cavity 21 with an opening facing downwards is arranged at the lower part of the valve core 2, a fire hole 22 communicated with the vent cavity 21 is formed in the side wall of the vent cavity 21, a knob rod 3 for driving the valve core 2 to rotate penetrates through the valve body 1, and the knob rod 3 keeps moving upwards on a return spring 32; the valve body 1 is also internally provided with a valve plate 4 for controlling the air output of the first air outlet channel 1 b. The valve body 1 comprises a valve seat 11 and a valve cover 12 fixed on the valve seat 11, and the knob rod 3 penetrates through the valve cover 12 and extends into the valve seat 11.

The valve plate 4 is located below the valve core 2, the valve core 2 can drive the valve plate 4 to move through rotation, an air outlet barrier groove 23 is formed in the peripheral wall of the valve core 2, and the air outlet barrier groove 23 is blocked with the air vent cavity 21. When the knob rod 3 and the valve core 2 are in the original state, the air inlet channel 1a is blocked with the first air outlet channel 1b and the second air outlet channel 1 c; in the process that the knob rod 3 drives the valve core 2 to rotate clockwise from the original state, the air inlet channel 1a can be communicated with the second air outlet channel 1c through the air outlet barrier groove 23, and meanwhile, the fire hole is always blocked from the air inlet channel 1 a; in the process that the knob rod 3 drives the valve core 2 to rotate anticlockwise from the original state, the air inlet channel 1a can be communicated with the first air outlet channel 1b through the fire hole 22, and meanwhile, the air inlet channel 1a cannot be communicated with the second air outlet channel 1c through the air outlet barrier groove 23 all the time.

The air outlet barrier groove 23 is positioned on the side wall of the valve core 2 above the vent cavity 21 and is of an arc shape, so that the arc shape is convenient to structure; the fire hole is located the below of giving vent to anger and rampart groove and is the arc. Of course, the air barrier groove 23 may be a right-angle groove.

When the knob lever 3 drives the valve core 2 to rotate clockwise from the original state to a first angle α 1 position, the air outlet amount of the air inlet channel 1a communicated with the second air outlet channel 1c through the air outlet barrier groove 23 is maximum, when the knob lever 3 drives the valve core 2 to rotate anticlockwise to a second angle α 2 position from the original state, the air inlet channel 1a is just communicated with the first air outlet channel 1b through the fire hole 22, and in the process that the knob lever 3 continues to drive the valve core 2 to rotate anticlockwise from the second angle α 2 to a third angle α 3, the valve plate 4 is driven to move towards the direction of increasing the air outlet amount of the air outlet channel 1 b.

The middle part of the air outlet channel 1b is provided with a valve port 10, the valve port 10 is positioned right below the valve core 2, the valve plate 4 is restrained below the valve port 10 and can move up and down, the opening degree of the valve port 10 is increased by downward movement of the valve plate 4, and the opening degree of the valve port 10 is reduced by upward movement of the valve plate 4; in the process of anticlockwise rotating of the valve core 2, the valve plate 4 is driven to move downwards by the rotation of the valve core 2; in the process of clockwise rotation of the valve core 2, the valve plate 4 is driven to move upwards by the rotation of the valve core 2.

An auxiliary air passage 1d is arranged in the valve body 1, an air inlet 1d1 of the auxiliary air passage 1d is positioned above the valve port 10, an air outlet 1d2 of the auxiliary air passage 1d is positioned below the valve port 10, and under the state that the valve plate 4 closes the valve port 10, the fuel gas coming out of the fire hole 22 can only be communicated with the outlet end of the air outlet channel 1b through the auxiliary air passage 1 d.

An adjusting fluid 5 for adjusting the air output of the auxiliary air passage 1d vertically penetrates through the auxiliary air passage 1 d. Of course, the throttle member may not be provided.

The valve plate 4 is fixed in the middle of an adjusting rod 7, the upper part of the adjusting rod 7 is inserted into an inner cutting groove at the lower end of the valve core 2, the valve core can move up and down relative to the adjusting rod 7, the valve core can rotate to drive the adjusting rod 7, a threaded hole 71 with a downward opening is formed in the bottom of the adjusting rod 7, a threaded column 61 is fixed at the bottom in the valve body 1, and the threaded column 61 is located below the adjusting rod 7 and is inserted into the threaded hole 71 to be connected into the threaded hole 71.

The bottom of the valve body 1 is fixedly provided with a power component 6 in a penetrating way, the threaded column 61 is arranged on the power component 6, the power component 6 can move up and down through expansion with heat and contraction with cold, and the structure inside the power component 6 is not shown in the drawing. An auxiliary spring 62 is arranged below the valve plate 4. This power part 6's drive structure is connected with temperature sensing stick 63, power part 6's built-in cavity has temperature sensing oil, the cavity can reciprocate according to the expend with heat and contract with cold production of inside temperature sensing oil, when the hot row temperature reaches the uniform temperature, the heat of temperature sensing stick 63 conducts through the heat-conducting component and gives temperature sensing oil, power part 6 reciprocates (is heated, the inflation, power part 6 moves up, meet the cold, the shrink, power part 6 moves down) under the promotion of temperature sensing oil, finally realize the regulation to valve block 4 upper and lower position, control outlet channel 1 b's the gas output. If the power part 6 moves upwards to push the valve plate 4 to move upwards, and the valve port 10 is closed under the action of the auxiliary spring 62, the gas from the fire hole 22 can only be communicated with the outlet end of the gas outlet channel 1b through the auxiliary gas channel 1d, and is at the minimum fire position.

The inner top surface of the valve cover 12 is provided with a limiting groove 121 and an upper limiting boss 122, the inner hole top surface of the valve seat 11 is provided with a lower limiting boss 111, the knob rod 3 is fixed with a rotary limiting disc 31, and the rotary limiting disc 31 is provided with a side convex limiting block 311; when the knob rod 3 is in the original state, the limiting block 311 keeps the tendency of being clamped into the limiting groove 121; one sides of the upper limit boss 122 and the lower limit boss 111 are matched with the limit block 311 to limit the maximum angle position of the knob lever 3 rotating clockwise at the original position; the other sides of the upper limit boss 122 and the lower limit boss 111 are engaged with the limit block 311 to limit the maximum angular position of the knob lever 3 rotated counterclockwise at the home position.

When the knob rod 3 is pressed down at the original position and rotates clockwise to the first angle α 1 position, one side of the lower limiting boss 111 blocks the limiting block 311, and after the hand is loosened, the knob rod 3 drives the limiting block 311 to move upwards, and one side of the upper limiting boss 122 blocks the limiting block 311.

The knob rod 3 is pressed down at the original position and rotates anticlockwise to a third angle α 3, the other side of the lower limiting boss 111 blocks the limiting block 311, after the hand is loosened, the knob rod 3 drives the limiting block 311 to move upwards, and the other side of the upper limiting boss 122 blocks the limiting block 311.

The safety electromagnetic valve 8 is arranged in the valve body 1, the safety electromagnetic valve 8 and the valve core 2 are arranged at intervals and are positioned in the air inlet channel 1a, the valve body 1 is provided with the ejector rod 9 in a penetrating mode, the ejector rod 9 can trigger the safety electromagnetic valve 8 when moving downwards, the ejector rod 9 is sleeved with a spring 91 enabling the ejector rod 9 to keep moving upwards, the knob rod 3 is sleeved with an energy driving plate 92, and the driving plate 92 can move axially along with the knob rod 3, but the knob rod 3 can rotate around the axis of the driving plate 92 relative to the driving plate 92.

The working principle and the process of the temperature control valve are as follows:

the knob rod 3 is pressed down, the limiting block 311 is separated from the limiting groove 121 for constraint, the driving plate 92 moves down along with the knob rod 3, the ejector rod 9 overcomes the elasticity of the spring 91 and moves down to trigger the safety electromagnetic valve 8, and the air source main switch is opened.

When the knob rod 3 drives the valve core 2 to rotate clockwise from the original state, the air inlet channel 1a can be communicated with the second air outlet channel 1c through the air outlet barrier groove 23, meanwhile, the fire hole is always blocked with the air inlet channel 1a, the upper fire row is ignited, when the knob rod 3 is pressed down at the original position and rotates clockwise to the first angle α 1 position, one side of the lower limit boss 111 blocks the limit block 311.

In the process that the knob rod 3 drives the valve core 2 to rotate anticlockwise from the original state, the air inlet channel 1a can be communicated with the first air outlet channel 1b through the fire hole 22, meanwhile, the air inlet channel 1a cannot be communicated with the second air outlet channel 1c through the air outlet barrier groove 23 all the time, the lower fire is ignited, the knob rod 3 is pressed down at the original position and rotates anticlockwise to a third angle α 3, the limiting block 311 is blocked by the other side of the lower limiting boss 111, after the hand is loosened, the knob rod 3 drives the limiting block 311 to move upwards, and the limiting block 311 is blocked by the other side of the upper limiting boss 122.

It should be noted that in the description of the present embodiment, the terms "front, back", "left, right", "up, down", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for convenience of description of the present invention and simplification of description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. The terms "mounted," "connected," and "coupled" are to be construed broadly and may, for example, be fixedly coupled, detachably coupled, or integrally coupled; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Claims

1. A temperature control valve with an upper fire discharge and lower fire discharge control function comprises a valve body (1) internally provided with an air inlet channel (1a), a first air outlet channel (1b) and a second air outlet channel (1c), wherein a rotatable valve core (2) is arranged in the valve body (1), the lower part of the valve core (2) is provided with a vent cavity (21) with a downward opening, the side wall of the vent cavity (21) is provided with a fire hole (22) communicated with the vent cavity (21), a knob rod (3) for driving the valve core (2) to rotate is arranged on the valve body (1) in a penetrating manner, and the knob rod (3) keeps moving upwards; a valve plate (4) for controlling the air outlet quantity of the first air outlet channel (1b) is also arranged in the valve body (1); the method is characterized in that: the valve plate (4) is located below the valve core (2), the valve plate (4) can be driven to move by the rotation of the valve core (2), an air outlet barrier groove (23) is formed in the peripheral wall of the valve core (2), and the air outlet barrier groove (23) is blocked with the vent cavity (21);

when the knob rod (3) and the valve core (2) are in the original state, the air inlet channel (1a) is blocked with the first air outlet channel (1b) and the second air outlet channel (1 c);

in the process that the knob rod (3) drives the valve core (2) to rotate clockwise from the original state, the air inlet channel (1a) can be communicated with the second air outlet channel (1c) through the air outlet barrier groove (23), and meanwhile, the fire hole is always blocked with the air inlet channel (1 a);

in the process that the knob rod (3) drives the valve core (2) to rotate anticlockwise from the original state, the air inlet channel (1a) can be communicated with the first air outlet channel (1b) through the fire hole (22), and meanwhile, the air inlet channel (1a) cannot be communicated with the second air outlet channel (1c) through the air outlet barrier groove (23) all the time.

2. The thermostat valve having a function of controlling the ignition of the burner as claimed in claim 1, wherein:

when the knob rod (3) drives the valve core (2) to rotate clockwise to a first angle (α 1) position from an original state, the air outlet quantity of the air inlet channel (1a) communicated with the second air outlet channel (1c) through the air outlet barrier groove (23) is the maximum;

when the knob rod (3) drives the valve core (2) to rotate anticlockwise to a second angle (α 2) position from an original state, the air inlet channel (1a) is just communicated with the first air outlet channel (1b) through the fire hole (22);

in the process that the knob rod (3) continues to drive the valve core (2) to rotate anticlockwise from the second angle (α 2) to the third angle (α 3), the valve plate (4) is driven to move towards the direction of increasing the air output of the air outlet channel (1 b).

3. The thermostat valve having a function of controlling the ignition of the burner as claimed in claim 1, wherein: the middle part of the air outlet channel (1b) is provided with a valve port (10), the valve port (10) is positioned under the valve core (2), the valve plate (4) is restrained under the valve port (10) and can move up and down, the opening degree of the valve port (10) can be increased by downward movement of the valve plate (4), and the opening degree of the valve port (10) can be reduced by upward movement of the valve plate (4); in the process that the valve core (2) rotates anticlockwise, the valve plate (4) is driven to move downwards by the rotation of the valve core (2); in the process of clockwise rotation of the valve core (2), the valve plate (4) is driven to move upwards by the rotation of the valve core (2).

4. The thermostat valve having a function of controlling the hot blast and the cold blast according to claim 3, wherein: the gas valve is characterized in that an auxiliary air passage (1d) is arranged in the valve body (1), an air inlet (1d1) of the auxiliary air passage (1d) is located above the valve port (10), an air outlet (1d2) of the auxiliary air passage (1d) is located below the valve port (10), and when the valve plate (4) is closed and the valve port (10) is closed, gas coming out of the fire hole (22) can only be communicated with an outlet end of the air outlet channel (1b) through the auxiliary air passage (1 d).

5. The thermostat valve having a function of controlling the hot blast and the cold blast according to claim 4, wherein: an adjusting fluid (5) used for adjusting the air output of the auxiliary air passage (1d) vertically penetrates through the auxiliary air passage (1 d).

6. The thermostat valve having a function of controlling the hot blast and the cold blast according to claim 4, wherein: the valve block (4) is fixed in the middle of an adjusting rod (7), the upper part of the adjusting rod (7) is inserted into an inner cutting groove at the lower end of the valve core (2), the valve core can move up and down relative to the adjusting rod (7) and the rotation of the valve core can drive the adjusting rod (7) to rotate, a threaded hole (71) with a downward opening is formed in the bottom of the adjusting rod (7), a threaded column (61) is fixed at the bottom in the valve body (1), the threaded column (61) is located below the adjusting rod (7) and is inserted into the threaded hole (71) and connected with the threaded hole; the valve body (1) bottom is worn to establish and is fixed with power unit (6), screw thread post (61) set up on this power unit (6), and power unit (6) can reciprocate through expend with heat and contract with cold, the below of valve block (4) is equipped with auxiliary spring (62).

7. The thermostat valve having a function of controlling the ignition of the burner as claimed in claim 1, wherein: the gas outlet barrier groove (23) is positioned on the side wall of the valve core above the vent cavity and is arc-shaped; the fire hole is located the below of giving vent to anger and rampart groove and is the arc.

8. The thermostat valve having a function of controlling the ignition of the burner as claimed in claim 1, wherein: the valve body (1) comprises a valve seat (11) and a valve cover (12) fixed on the valve seat (11), the inner top surface of the valve cover (12) is provided with a limiting groove (121) and an upper limiting boss (122), the top surface of the inner hole of the valve seat (11) is provided with a lower limiting boss (111), and a side-convex limiting block (311) is fixed on the knob rod (3); when the knob rod (3) is in an original state, the limiting block (311) keeps the trend of being clamped into the limiting groove (121); one sides of the upper limiting boss (122) and the lower limiting boss (111) are matched with the limiting block (311) to limit the maximum angle position of the clockwise rotation of the knob rod (3) at the original position; the other sides of the upper limiting boss (122) and the lower limiting boss (111) are matched with the limiting block (311) to limit the maximum angle position of the knob rod (3) rotating anticlockwise at the original position.

9. The thermostat valve having a function of controlling the ignition of the burner as claimed in claim 1, wherein: be equipped with in valve body (1) and be used for safety solenoid valve (8), safety solenoid valve (8) with case (2) interval sets up and is located inlet channel (1a), wear to be equipped with ejector pin (9) on valve body (1), the ability trigger that moves down of ejector pin (9) safety solenoid valve (8), the cover is equipped with spring (91) that makes ejector pin (9) keep moving up the trend on ejector pin (9), cover is established on knob pole (3) and can be driven plate (92), and drive plate (92) can be rotatory around self axis along with knob pole (3) axial displacement but knob pole (3) can be relative drive plate (92).