Control system of gas fireplace

Abstract

The utility model discloses a control system of a gas fireplace. The control system comprises a shell, the direct push valve is arranged on the shell, and the direct push valve comprises a valve body and a push rod arranged along the axis of the valve body; the driving mechanism is arranged on the shell, and the driving mechanism can drive the push rod to do linear motion along the axis of the valve body; the driving mechanism comprises an operating rod doing linear motion along the shell, a first connecting rod hinged to the bottom end of the operating rod, a rotating rod hinged to the other end of the first connecting rod, a second connecting rod hinged to the other end of the rotating rod, and an ejector rod hinged to the other end of the second connecting rod; wherein a rotating shaft is arranged on the shell, and the rotating rod can rotate around the rotating shaft; the ejector rod can do linear motion along the axis of the valve body. When the operating rod does linear motion in the vertical direction of the shell, the ejector rod is pushed to do linear motion along the axis of the valve body, and when the ejector rod does linear motion along the axis of the valve body, the push rod is pushed to do linear motion along the axis of the valve body.

Description

Technical Field

[0001] The utility model relates to the technical field of gas fireplaces, in particular to a control system of a gas fireplace. Background Art

[0002] Gas fireplaces are loved by more and more consumers because they can not only provide the viewing effect of real flames, but also provide a good heating effect. As a decorative gas appliance, the exposed operating parts of gas fireplaces usually need to be as few as possible or hidden, and the control parts such as valves are generally arranged at the bottom of the product, resulting in the operating parts and the valves that control the gas supply being usually far apart. At this time, a suitable motion mechanism is needed to transmit the motion of the operating parts to the valves to control the opening and closing of the valves. This set of motion mechanisms, valves, and related ignition, fire-off, and detection devices together constitute the control system of the gas fireplace.

[0003] At present, there are two main types of gas valves on the market: plug valves and direct push valves. Since plug valves require not only pressing but also rotational motion when operated, the motion transmission is relatively complex and it is difficult to achieve long-distance transmission of motion. However, since direct push valves perform linear motion, the motion is single and the operation is simple and convenient, it is suitable for occasions on gas fireplaces that require long-distance transmission of motion control.

[0004] However, in the gas fireplace control systems currently available in the market that are compatible with direct push valves, when the terminal components of their motion mechanisms push the direct push valves, there is a certain relative sliding between the terminal components and the push rod of the direct push valve, such as a gas appliance push rod valve adjustment mechanism mentioned in Patent No. CN201320715287.7. The relative sliding will not only increase the wear of the push rod of the direct push valve and affect the stroke control, but also increase the lateral force acting on the push rod of the direct push valve, causing the push rod of the direct push valve to tilt, thereby leading to the hidden danger of the push rod of the direct push valve being stuck. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] The technical problem to be solved by the utility model is to provide a control system for a gas fireplace, which not only conveniently realizes the high-end and low-end working states of the gas fireplace, but also can reduce the wear on the push rod of the direct push valve and increase the service life of the direct push valve.

[0007] (II) Technical solution

[0008] The utility model solves the above technical problems by adopting a solution of a gas fireplace control system, comprising:

[0009] case;

[0010] A direct push valve, which is arranged on the housing, and comprises a valve body and a push rod arranged along the axis of the valve body;

[0011] A driving mechanism, which is disposed on the housing and can drive the push rod to perform linear motion along the axis of the valve body;

[0012] The driving mechanism includes an operating rod that performs linear motion along the shell, a first connecting rod hinged to the bottom end of the operating rod, a rotating rod hinged to the other end of the first connecting rod, a second connecting rod hinged to the other end of the rotating rod, and a push rod hinged to the other end of the second connecting rod; wherein, a rotating shaft is provided on the shell, the rotating rod can rotate around the rotating shaft; the push rod can perform linear motion along the axis of the valve body; when the operating rod performs linear motion along the first direction, the push rod is pushed to perform linear motion along the axis of the valve body, and when the push rod performs linear motion along the axis of the valve body, the push rod is pushed to perform linear motion along the axis of the valve body.

[0013] In some embodiments, the movement direction of the operating rod and the movement direction of the push rod are perpendicular to each other, and the movement direction of the push rod is the same as the movement direction of the push rod.

[0014] Specifically, the rotation connection between the rotating rod and the shell is relatively arranged at an end of the hinge between the first link and the rotating rod close to the push rod; then, after the operating rod moves downward, the end of the first link and the operating rod hingedly moves downward, and the hinge between the first link and the rotating rod is pushed to move in a direction close to the push rod. Since the rotating rod and the shell are rotationally connected, the hinge between the rotating rod and the first link is pushed to move in a direction close to the push rod, and since the push rod is restricted to move along the axial direction of the valve body, the first link will push the push rod to move in a direction close to the push rod, thereby pushing the push rod to move in a direction close to the valve body along the axis of the valve body; similarly, after the operating rod moves upward, the push rod will be driven to move in a direction away from the push rod along the axial direction of the valve body through the first link, the rotating rod and the second link, and disengage from the push rod, and the push rod will be reset under the action of the first return spring.

[0015] By adopting the above scheme, a rotating shaft is provided on the shell, and the rotating rod is rotatably connected to the rotating shaft and can rotate around the rotating shaft; and since the operating rod, the first connecting rod and the rotating rod are all rotatably connected, the rotating rod, the second connecting rod and the push rod are also rotatably connected; then a slider crank mechanism is formed between the shell, the operating rod, the first connecting rod and the rotating rod, and a crank slider mechanism is formed between the shell, the rotating rod, the second connecting rod and the push rod, and the rotational movement of the rotating rod is driven by the linear movement of the operating rod, thereby driving the linear movement of the push rod, that is, the movement of the operating rod will be transmitted to the push rod; under the driving force of the operating rod, the push rod will push the push rod of the direct push valve to move in the direction close to the valve body.

[0016] In some embodiments, the driving mechanism also includes a guide column and a fixed seat fixed on the shell; the guide column is arranged on the movement stroke of the operating rod, and the operating rod is provided with a guide groove cooperating with the guide column along its movement direction; the fixed seat is provided with a first through hole along the axial direction of the valve body, the push rod is adapted in the first through hole, and the push rod can make a linear motion along the first through hole.

[0017] In some embodiments, the guide grooves are provided at both upper and lower ends of the operating rod, and the shell is provided with two guide columns respectively cooperating with the two guide grooves, so that the linear motion of the operating rod is smoother and will not deviate, thereby ensuring the motion stability of the driving mechanism, thereby ensuring the smoothness of the linear motion of the push rod and the push rod.

[0018] By adopting the above scheme, the linear motion of the operating rod on the housing can be limited by the cooperation between the guide column and the guide groove; the linear motion of the push rod on the housing can be limited by the cooperation between the push rod and the first through hole.

[0019] In some embodiments, the direct push valve has a low-gear state and a high-gear state for the gas flow supplied to the gas fireplace; after the operating rod moves downward, the operating rod drives the push rod along the axis of the valve body to approach the push rod, and pushes the push rod to move along the axis of the valve body toward the valve body to the low-gear position, and the direct push valve is in the low-gear state of the gas flow supplied to the gas fireplace; after the operating rod moves upward, the operating rod drives the push rod along the axis of the valve body away from the push rod, and the push rod resets to the high-gear position along the axis of the valve body toward the direction away from the valve body, and the direct push valve is in the high-gear state of the gas flow supplied to the gas fireplace.

[0020] In some embodiments, an operating handle is provided on the operating rod, and the operating handle extends out of the shell to facilitate user operation.

[0021] By adopting the above scheme, the movement of the operating rod can realize two working states of the direct push valve for supplying gas flow to the gas fireplace, namely, a low-speed state and a high-speed state, which is convenient for the user to operate.

[0022] In some embodiments, a low-gear buffer positioning device is provided between the operating rod and the housing, and when the operating rod moves downward until the push valve is in a low-gear state, the operating rod just contacts the low-gear buffer positioning device.

[0023] Specifically, the operating lever has a low-gear position and an ignition position. When the operating lever moves to the low-gear position, the direct-push valve is in a low-gear state; when the operating lever moves to the ignition position, the direct-push valve is in an ignition state.

[0024] In some embodiments, when the operating lever continues to move downward to the ignition position, the operating lever can compress the low-gear buffer positioning device; and when the operating lever is in a position between the low gear and the ignition, when the force applied to the operating lever is removed, the operating lever can automatically return to the low-gear position under the action of the low-gear buffer positioning device.

[0025] In some embodiments, the low-gear buffer positioning device includes a low-gear buffer fixing block, a low-gear buffer sliding rod, and a low-gear buffer spring; the low-gear buffer fixing block is fixedly arranged relative to the shell; the low-gear buffer fixing block is provided with a second through hole along the movement direction of the operating rod; the low-gear buffer sliding rod is adapted in the second through hole, and the low-gear buffer sliding rod can move linearly along the second through hole; the operating rod is placed at the top end of the low-gear buffer sliding rod, and when the operating rod moves downward until it contacts the top end of the low-gear buffer sliding rod, the direct push valve is in a low-gear position;

[0026] In addition, a stop block that can abut against the bottom end of the low-gear buffer fixed block is provided at one end of the low-gear buffer slide bar away from the operating rod, and a low-gear buffer spring block is provided at one end of the low-gear buffer slide bar close to the operating rod. The low-gear buffer spring is sleeved on the low-gear buffer slide bar, and one end abuts against the low-gear buffer spring block, and the other end abuts against the top end of the low-gear buffer fixed block. The low-gear buffer spring can give the low-gear buffer slide bar a tendency to always move in a direction close to the operating rod.

[0027] In some embodiments, a low-gear buffer operating arm is provided at one end of the operating rod close to the low-gear buffer slide rod, and a ball head is provided at one end of the low-gear buffer slide rod close to the operating rod; when the operating rod moves downward until the direct-push valve is in a low-gear position, the low-gear buffer operating arm contacts the ball head.

[0028] By adopting the above scheme, when the operating lever moves downward to the low-gear position, the low-gear buffer operating arm just contacts with the low-gear buffer operating arm, and at this time, the direct-push valve is in a low-gear state; when the operating lever continues to move downward to the ignition position, the low-gear buffer operating arm will push the low-gear buffer slide bar to move downward, and the low-gear buffer spring will be compressed, and at this time, the direct-push valve is in an ignition state; and when the operating lever is in a position between the low-gear position and the ignition position, after the force applied to the operating lever is removed, the rebound force of the low-gear buffer spring will give the low-gear buffer operating arm an upward force, thereby causing the operating lever to return to the low-gear position; and since the end of the low-gear buffer slide bar that contacts the low-gear buffer operating arm is configured as a ball head, the low-gear buffer slide bar and the low-gear buffer operating arm are in point contact, and the operation is smoother.

[0029] In some embodiments, a high-grade buffer positioning device is provided between the push rod and the fixed seat, and when the operating rod moves upward until the push valve is in a high-grade state, the high-grade buffer positioning device just contacts with the fixed seat.

[0030] Specifically, the operating lever has a high-speed position and an off-speed position. When the operating lever moves to the high-speed position, the direct-push valve is in the high-speed state; when the operating lever moves to the off-speed position, the direct-push valve is in the off-speed state.

[0031] In some embodiments, the high-end buffer positioning device includes a high-end buffer baffle plate clamped on one end of the push rod close to the push rod, a movable baffle plate sleeved on one end of the push rod close to the fixed seat, and a high-end buffer spring sleeved on the push rod; one end of the high-end buffer spring is against the high-end buffer baffle plate, and the other end is against the movable baffle plate; when the operating rod moves upward and drives the push rod to move until the movable baffle plate contacts the fixed seat, the direct push valve is in a high-end position; and the high-end buffer spring can give the push rod a tendency to always move in a direction close to the push rod.

[0032] In some embodiments, a high-end buffer slot is provided on one end of the push rod close to the push rod, and the high-end buffer baffle is snapped into the high-end buffer slot, thereby realizing the fixed installation of the high-end buffer baffle on the push rod; a stop step is provided on one end of the push rod close to the fixed seat, and the movable baffle is against the stop step under the action of the rebound force of the high-end buffer spring; and since the movable baffle is sleeved on the push rod, under the action of external force, after the movable baffle is against one end of the fixed seat close to the direct push valve, the movable baffle is restricted, and the high-end buffer spring is compressed.

[0033] By adopting the above scheme, when the operating rod moves upward, it will drive the push rod to move along the axis of the valve body in the direction away from the push valve, until the operating rod reaches the high-end position, at this time, the movable baffle just contacts with the fixed seat, and the push valve is in the high-end state; at this time, if the operating rod continues to move upward, then since the fixed seat is fixed on the shell, the movable baffle is restricted on the fixed seat, and the high-end buffer spring will be compressed. At this time, if the force applied to the operating rod is removed, the rebound force of the high-end buffer spring will give the high-end buffer baffle a force, so that it drives the push rod to move in the direction close to the push rod, and the push rod will drive the operating rod to return to the high-end position, that is, the position of the operating rod when the movable baffle just contacts with the fixed seat.

[0034] In some embodiments, the movement distance of the operating rod is greater than the movement distance of the top rod, so as to realize the movement displacement reduction function of the driving mechanism; so that when operating the movement of the operating rod, the position of each gear can be distinguished more clearly.

[0035] In some embodiments, the direct push valve includes

[0036] A valve body, wherein an air inlet cavity, a transition cavity and an air outlet cavity are sequentially connected therein; and the valve body comprises an air inlet port communicating with the air inlet cavity and an air outlet port communicating with the air outlet cavity;

[0037] A push rod, which is arranged in the air outlet cavity and can move linearly along the axial direction of the air outlet cavity;

[0038] An intermediate sealing body, which is sleeved on one end of the push rod close to the air inlet cavity;

[0039] A first return spring is sleeved on the push rod and is located between the middle sealing body and the tail of the push rod, and one end of the push rod close to the push rod forms the tail of the push rod; the first return spring can give the push rod a tendency to always move in a direction away from the air outlet cavity;

[0040] A solenoid valve is arranged at one end of the valve body close to the air inlet cavity, and the solenoid valve comprises a valve core capable of linear motion along the axial direction of the air inlet cavity, and a sealing block connected to one end of the valve core close to the air outlet cavity, wherein the sealing block can separate the air inlet cavity from the transition cavity;

[0041] Among them, a first sealing ring capable of cooperating with the push rod for sealing is provided in the valve body, and the first sealing ring can separate the transition chamber and the air outlet chamber; a low-grade air path channel capable of connecting the transition chamber and the air outlet is provided in the valve body, and a low-grade adjusting rod is provided in the low-grade air path channel, and a flow gap is formed between the low-grade adjusting rod and the inner wall of the low-grade air path channel; the low-grade adjusting rod is movably arranged in the low-grade air path channel to adjust the size of the flow gap.

[0042] Specifically, a first sealing ring is arranged between the transition chamber and the air outlet chamber. Through the cooperative sealing of the push rod and the first sealing ring, the airflow entering from the air inlet chamber can only flow to the air outlet through the low-grade air path channel; and when the seal of the push rod and the first sealing ring is released, the airflow entering from the air inlet chamber can flow to the air outlet through the low-grade air path channel and can flow to the air outlet from the air outlet chamber. There are two pathways to lead the airflow out, so a high fire state can be achieved.

[0043] In some embodiments, a second return spring is provided between the valve core and the sealing block, and the second return spring can give the valve core a tendency to always move toward a direction close to the transition chamber.

[0044] By adopting the above scheme, a low-speed working state can be achieved by setting up a low-speed air path channel; by setting up a low-speed adjustment rod in the low-speed air path channel, the low-speed adjustment rod can be adjusted as needed, thereby adjusting the size of the flow gap between the low-speed adjustment rod and the inner wall of the low-speed air path channel, and then adjusting the flow rate flowing to the air outlet.

[0045] In some embodiments, the low-grade air passage comprises a low-grade air inlet passage communicating with the transition chamber, and a low-grade air outlet passage communicating with the air outlet, wherein the low-grade air inlet passage and the low-grade air outlet passage intersect each other; the low-grade air inlet passage or the low-grade air outlet passage extends axially to form a low-grade regulating port, the low-grade regulating rod is disposed in the low-grade regulating port, and can perform linear motion along the axial direction of the low-grade regulating port;

[0046] The low-gear adjustment rod includes a first shaft portion and a second shaft portion connected in sequence along the axial direction of the low-gear adjustment port, the shaft diameter of the first shaft portion is smaller than the shaft diameter of the second shaft portion, and a transition shaft portion is formed between the first shaft portion and the second shaft portion, the first shaft portion can extend into the low-gear air intake passage or the low-gear air outlet passage, and the flow gap is formed between the transition shaft portion and the inner wall of the low-gear air path passage; and since the outer surface of the transition shaft portion is a transition curved surface connecting the outer surfaces of the first shaft portion and the second shaft portion, when the low-gear adjustment rod moves along the axial direction of the low-gear adjustment port toward a direction away from the low-gear air intake passage or the low-gear air outlet passage, the size of the flow gap changes from small to large; when the low-gear adjustment rod moves along the axial direction of the low-gear adjustment port toward a direction close to the low-gear air intake passage or the low-gear air outlet passage, the size of the flow gap changes from large to small.

[0047] In some embodiments, the low-speed air inlet passage and the low-speed air outlet passage are perpendicular.

[0048] By adopting the above scheme, during the process of the low-gear adjustment rod making linear motion along the axial direction of the low-gear adjustment port, the size of the flow gap between the low-gear adjustment rod and the inner wall of the low-gear air path can be adjusted, thereby adjusting the flow rate flowing to the air outlet.

[0049] In some embodiments, a second sealing ring is arranged between the low-gear adjustment rod and the low-gear adjustment port. An interference fit is adopted between the second sealing ring and the low-gear adjustment port, thereby achieving sealing between the second sealing ring and the low-gear adjustment port. An interference fit is adopted between the second sealing ring and the low-gear adjustment rod, thereby achieving sealing between the second sealing ring and the resisting adjustment rod, thereby ensuring sealing between the resisting adjustment rod and the low-gear adjustment port to prevent airflow leakage, with high safety.

[0050] In some embodiments, the low-gear adjustment rod and the low-gear adjustment port are connected by a threaded connection; the tail end of the low-gear adjustment rod is provided with a mating portion that can cooperate with an external structure, so that the low-gear adjustment rod can make a linear motion along the axial direction of the low-gear adjustment port, and the mating portion includes a cross groove, a slotted groove and other structures, and the low-gear adjustment rod can be easily screwed in or out using a common screwdriver, thereby adjusting the size of the flow gap formed between the low-gear adjustment rod and the low-gear air path, which is easy to operate.

[0051] In some embodiments, one of the low-speed air inlet channel and the low-speed air outlet channel is extended axially to form the low-speed adjustment port; the other of the low-speed air inlet channel and the low-speed air outlet channel is extended axially to form a process hole, and a plug is fitted in the process hole.

[0052] In some embodiments, the plug includes a steel ball, and an interference fit is adopted between the plug and the process hole. After the plug is assembled into the process hole, the process hole can be sealed, thereby ensuring the sealing of the low-grade air path channel, and the sealing performance is good.

[0053] With the above solution, the low-grade gas path is machined. Due to the manufacturing process, a process hole is usually formed. In order to block the process hole, the process hole can be sealed by the plug to ensure the sealing of the low-grade gas path.

[0054] In some embodiments, the valve body is further provided with a pilot flame air outlet communicating with the transition chamber.

[0055] In some embodiments, the head of the push rod is provided with a bevel to serve as a guide so that the movement of the push rod is smoother, especially when the push rod is adapted to the inner hole of the first sealing ring, the bevel can enable the push rod to enter smoothly without scratching the inner hole of the first sealing ring; the tail of the push rod is a round shaft structure, and a notch is provided at one end of the tail of the push rod close to the middle sealing body to release the air pressure in the space formed between the tail of the push rod and the inner wall of the valve body.

[0056] By adopting the above scheme, when the push rod makes a linear motion along the axial direction of the air outlet cavity, the tail of the push rod cooperates with the inner wall of the valve body to move. Since the gap between the tail of the push rod and the inner wall of the valve body is relatively small, and when in use, due to the effect of grease, the tail of the push rod and the inner wall of the valve body will be in a sealed state, then when the push rod makes a linear motion, the air pressure in the space formed by the tail of the push rod and the inner wall of the valve body is also changing. The setting of the notch can release the air pressure in the space formed between the tail of the push rod and the inner wall of the valve body, which has high safety.

[0057] In some embodiments, the control system further comprises a pilot fire device and an ignition and shutoff control device;

[0058] The pilot fire device comprises an ignition nozzle, an ignition needle and a thermocouple, the ignition nozzle is connected to the pilot fire outlet on the direct push valve, the thermocouple is connected to the solenoid valve, the thermocouple will generate a thermoelectric potential under the action of the flame, and the thermoelectric potential generated on the thermocouple can keep the solenoid valve closed;

[0059] The ignition and shutdown control device includes an ignition travel switch, an shutdown travel switch and an igniter. The ignition travel switch is arranged at a position where the operating rod moves downward to the ignition position and the driving mechanism can touch the ignition travel switch, and the shutdown travel switch is arranged at a position where the operating rod moves upward to the shutdown position and the driving mechanism can touch the shutdown travel switch; the igniter is connected to the ignition needle, the ignition travel switch is connected in series with the igniter and the ignition needle, and the shutdown travel switch is connected in series with the solenoid valve and the thermocouple.

[0060] In some embodiments, an ignition switch operating arm is provided on the push rod, and when the operating rod moves downward to the ignition position, the ignition switch operating arm can touch the ignition travel switch.

[0061] In some embodiments, the ignition travel switch is arranged relatively above the push rod, and an ignition switch operating arm is provided at one end of the push rod close to the ignition travel switch, and when the operating rod moves downward to the ignition position, the push rod moves toward the direction close to the push rod until the ignition switch operating arm just triggers the ignition travel switch.

[0062] In some embodiments, a fire switch operating arm is provided on the rotating rod, and when the operating rod moves upward to the fire-off position, the fire-off switch operating arm can touch the fire-off travel switch.

[0063] In some embodiments, the fire-off switch operating arm is arranged above the rotating rod, and the fire-off travel switch is relatively arranged at one end of the rotating rod close to the push rod. When the operating rod moves upward to the fire-off position, the rotating rod rotates around the rotating axis so that the fire-off switch operating arm moves relatively downward until it just triggers the fire-off travel switch.

[0064] The working principle of this utility model:

[0065] The driving mechanism is actually composed of a pair of slider crank mechanism and a pair of crank slider mechanism, which converts the linear motion of the operating rod in the vertical direction into the linear motion of the push rod in the horizontal direction, and reduces the distance of the motion displacement to adapt to the stroke change of the push rod of the direct push valve. Since the push rod is in linear motion, the axis of the push rod of the direct push valve is set in the same direction as the movement of the push rod, so that when the push rod pushes the push rod, it pushes the push rod horizontally, and there is no relative displacement between the push rod and the push rod, which makes the operation of the direct push valve smoother, and there is no wear on the push rod, thereby increasing the service life of the direct push valve.

[0066] The direct push valve is a direct push valve with an adjustable low-range flow channel, which not only conveniently realizes high-range and low-range gas supply states, but also can adjust the low-range flow size to meet the low-range flame size requirements of different products.

[0067] The low-range buffer reset device and the high-range buffer reset device, the operating rod can automatically return to the low-range position or the high-range position, so that the user can easily set the gas fireplace to the low-range position or the high-range position.

[0068] Ignition: When the user presses the operating handle and presses it to the bottom, the operating rod moves downward, and the push rod moves toward the direction of the push valve until it pushes the push rod to move toward the direction close to the air inlet chamber, and pushes the sealing block to make the solenoid valve in the suction position, the second return spring is compressed, and the first return spring is compressed; at this time, the air inlet chamber is connected with the long-fire air outlet, and the gas can enter the ignition nozzle of the mother fire device through the air inlet chamber of the push valve, and at this time, the ignition switch operating arm triggers the ignition travel switch, thereby controlling the igniter to discharge and ignite the ignition needle; and in the ignition state, the low-grade buffer spring is in a compressed state under the action of the operating rod;

[0069] Low gear: after the flame is ignited, the user can release the force applied to the operating handle, and the operating rod automatically moves upward under the action of the rebound force of the low-gear buffer spring, thereby driving the push rod to move in the direction away from the push valve; at this time, under the action of the rebound force of the first return spring, the push rod moves in the direction away from the air inlet chamber until the outer circumferential surface of the push rod close to the head is separated from the first sealing ring, and the low-gear buffer slide bar and the low-gear buffer operating arm are just at the critical point of separation. At this time, the outer circumferential surface of the push rod close to the head and the first sealing ring are in a sealed state, and after the gas in the air inlet chamber enters the transition chamber, it can enter the air outlet through the low-gear gas path to be burned by the gas fireplace burner, and this is the low-gear flow state; and the thermocouple generates a thermoelectric potential under the action of the flame, and the generated thermoelectric potential can maintain the solenoid valve in the attracted state;

[0070] High gear: In the low gear state, the user operates the operating handle to lift the operating rod upward, thereby driving the push rod to continue to move in the direction away from the push valve until the movable baffle just contacts the fixed seat, which is the high gear position. At this time, if the operating rod continues to be lifted upward, under the action of the high-speed return spring, the resistance will increase significantly to remind the user that the operating rod is in the high gear position. Even if the user applies too much force and the operating rod slightly exceeds the high gear position, as long as the force applied to the operating handle is removed, the operating rod will also be in the high gear position under the action of the high-speed return spring. The push rod returns to the high-speed position under the action of the rebound force of the spring; when moving from the low-speed position to the high-speed position, under the action of the first return spring, the push rod continues to move away from the air inlet chamber, the outer circumferential surface of the push rod close to the head is out of contact with the first sealing ring, the transition chamber is connected with the air outlet chamber, the gas in the transition chamber can enter the air outlet through the air outlet chamber, and the caliber of this air path is larger than the caliber of the low-speed air path, forming a larger airflow to flow to the air outlet, that is, the high-speed flow state, and the flame of the gas fireplace is in a high-speed size state;

[0071] Turn off the flame: In the high-speed state, the user can continue to lift the operating lever upward to overcome the force of the high-speed return spring until the flame is turned off. At this time, the flame-off switch operating arm acts on the flame-off travel switch to disconnect the thermocouple from the solenoid valve. Since the solenoid valve cannot obtain the thermoelectric potential generated by the thermocouple, the solenoid valve cannot maintain the closed state. Under the action of the second return spring, the sealing block seals and isolates the air intake chamber from the transition chamber, and the direct push valve is in a closed state, thereby realizing the flame-off operation;

[0072] Reset: When the fire is turned off, when the force applied to the operating rod is removed, under the action of the high-speed reset spring, the operating rod is driven by the push rod to return to the high-speed position. However, at this time, since the direct push valve is in a closed state, the gas fireplace is also in a closed state, that is, the gas fireplace is in a standby reset state.

[0073] (III) Beneficial effects

[0074] Compared with the prior art, the utility model designs a control system for a gas fireplace.

[0075] (1) The utility model converts the linear motion of the operating rod in the vertical direction into the linear motion of the push rod through a driving mechanism, and reduces the distance of the motion displacement to adapt to the stroke change of the push rod of the direct push valve. Since the push rod moves linearly, the axis of the push rod of the direct push valve is set in the same direction as the movement of the push rod, so that when the push rod pushes the push rod, it pushes the push rod horizontally, and there is no relative displacement between the push rod and the push rod, which makes the operation of the direct push valve smoother, and there is no wear on the push rod, thereby increasing the service life of the direct push valve;

[0076] (2) The direct push valve of the utility model is a direct push valve with an adjustable low-range flow channel, which not only conveniently realizes the high-range and low-range gas supply states, but also can adjust the low-range flow size to meet the requirements of low-range flame size of different products;

[0077] (3) The utility model is provided with a low-range buffer reset device and a high-range buffer reset device, so that the operating rod can automatically return to the low-range position or the high-range position, so that the user can easily set the gas fireplace to the low-range position or the high-range position, with a simple structure and convenient operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0078] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0079] Figure 1 This is a schematic diagram of the structure of a control system of a gas fireplace of the utility model;

[0080] Figure 2 It is a structural cross-sectional view of the direct push valve of the utility model;

[0081] Figure 3 This is a schematic structural diagram of a control system of a gas fireplace of the utility model from another angle;

[0082] Figure 4 It is a partially enlarged schematic diagram of a control system of a gas fireplace of the utility model;

[0083] Figure 5 It is a structural schematic diagram of a control system of a gas fireplace of the utility model in an ignition state;

[0084] Figure 6 It is a cross-sectional view of the direct push valve of the utility model in an ignition state;

[0085] Figure 7 for Figure 6 The enlarged schematic diagram at A in the middle;

[0086] Figure 8 It is a structural schematic diagram of a control system of a gas fireplace in the utility model in a low gear state;

[0087] Fig. 9 for Figure 8 Partial cross-sectional view at the middle BB;

[0088] Fig.10 It is a cross-sectional view of the direct push valve of the utility model in a low gear state;

[0089] Fig.11 It is a structural schematic diagram of a control system of a gas fireplace of the utility model in a high-end state;

[0090] Fig.12 for Fig.11 Partial cross-sectional view at CC;

[0091] Fig.13 It is a cross-sectional view of the direct push valve of the utility model in a high-speed state;

[0092] Fig.14 This is a schematic structural diagram of a control system of a gas fireplace in a closed state according to the utility model;

[0093] Fig.15 It is a cross-sectional view of the direct push valve of the utility model in a closed state.

[0094] The names of the components corresponding to the reference numerals in the figure are: 100, housing; 103, rotating shaft; 200, direct push valve; 201, valve body; 2011, air inlet cavity; 2012, transition cavity; 2013, air outlet cavity; 2014, air inlet; 2015, air outlet; 2016, low-grade air passage; 2016a, low-grade air inlet passage; 2016b, low-grade air outlet passage; 2017, low-grade regulating port; 2018, process hole; 2019, long-fire air outlet; 202, push rod; 202 1. inclined surface; 2022. notch; 203. intermediate sealing body; 204. first return spring; 205. solenoid valve; 2051. valve core; 2052. sealing block; 2053. second return spring; 206. first sealing ring; 207. low-speed adjustment lever; 2071. first shaft; 2072. second shaft; 2073. transition shaft; 2074. matching part; 208. flow gap; 209. second sealing ring; 210. plug; 300. drive mechanism; 301. operating lever; 3 011, guide groove; 3012, low-grade buffer operating arm; 3013, operating handle; 302, first connecting rod; 303, rotating rod; 3031, ignition switch operating arm; 304, second connecting rod; 305, push rod; 3051, ignition switch operating arm; 3052, high-grade buffer slot; 3053, stop step; 306, guide column; 307, fixing seat; 3071, first perforation; 400, low-grade buffer positioning device; 401, low-grade buffer fixing block; 4011, second perforation; 4 02, low-end buffer slide bar; 4021, stop block; 4022, low-end buffer spring baffle; 4023, ball head; 403, low-end buffer spring; 500, high-end buffer positioning device; 501, high-end buffer baffle; 502, movable baffle; 503, high-end buffer spring; 600, primary fire device; 601, ignition nozzle; 602, ignition needle; 603, thermocouple; 700, ignition and shutdown control device; 701, ignition travel switch; 702, shutdown travel switch; 703, igniter. DETAILED DESCRIPTION

[0095] The following is a further detailed description of the specific implementation of the present utility model in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0096] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0097] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0098] In the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the examples may be practiced without these specific details.

[0099] It should be noted that: Figure 5 The utility model shows a structure of a gas fireplace control system in an ignition state, at which time the operating rod 301 is in the ignition position; Figure 6 The structure of the direct push valve 200 of the utility model in the ignition state is shown. At this time, the push rod 202 is in the ignition position; Figure 8 The utility model shows a structure of a gas fireplace control system in a low gear state, at this time, the operating rod 301 is in a low gear position; Fig.10 The structure of the direct push valve 200 of the utility model in the low gear state is shown. At this time, the push rod 202 is in the low gear position; Fig.11 The utility model shows a structure of a gas fireplace control system in a high-end state, at which time the operating rod 301 is in a high-end position; Fig.13 The structure of the direct push valve 200 of the utility model is shown in the high-end state, at this time, the push rod 202 is in the high position; Fig.14 The utility model shows a mechanism of a gas fireplace control system in a fire-off state, at which time the operating rod 301 is in the fire-off position; Fig.15The structure of the direct push valve of the utility model in the off-fire state is shown, at this time, the push rod 202 is in the off-fire position.

[0100] The technical solutions provided by various embodiments of the present application are described below in conjunction with the accompanying drawings.

[0101] like Figure 1-Figure 15As shown, the utility model provides a control system for a gas fireplace, comprising a housing 100; a direct push valve 200, which is arranged on the housing 100, and the direct push valve 200 comprises a valve body 201, and a push rod 202 arranged along the axis of the valve body 201; a driving mechanism 300, which is arranged on the housing 100, and the driving mechanism 300 can drive the push rod 202 to perform linear motion along the axis of the valve body 201; the driving mechanism 300 comprises an operating rod 301 that performs linear motion along the housing 100, a first connecting rod 302 hinged to the bottom end of the operating rod 301, a rotating rod 303 hinged to the other end of the first connecting rod 302, a second connecting rod 304 hinged to the other end of the rotating rod 303, and a top rod 305 hinged to the other end of the second connecting rod 304; Among them, a rotating shaft 103 is provided on the shell 100, and the rotating rod 303 can rotate around the rotating shaft 103; the push rod 305 is arranged close to the push rod 202, and the push rod 305 is arranged along the axis of the valve body 201, and can make a linear motion along the axis of the valve body 201; when the operating rod 301 makes a linear motion along the vertical direction of the shell 100, it will push the push rod 305 to make a linear motion along the axis of the valve body 201, and when the push rod 305 makes a linear motion along the axis of the valve body 201, it will push the push rod 202 to make a linear motion along the axis of the valve body 201, and the movement direction of the operating rod 301 and the movement direction of the push rod 305 are perpendicular to each other, and the movement direction of the push rod 305 is the same as the movement direction of the push rod 202.Specifically, the rotational connection between the rotating rod 303 and the shell 100 is relatively arranged at an end of the hinge between the first connecting rod 302 and the rotating rod 303 close to the top rod 305; then, after the operating rod 301 moves downward, the end of the first connecting rod 302 hinged with the operating rod 301 moves downward, and the hinge between the first connecting rod 302 and the rotating rod 303 is pushed toward the direction close to the top rod 305. Since the rotating rod 303 is rotationally connected to the shell 100, the hinge between the rotating rod 303 and the first connecting rod 302 is pushed toward the direction close to the top rod 305, and since the top rod 305 is restricted to move along the axial direction of the valve body 201, the first connecting rod 302 will push the push rod 305 to move in the direction close to the push rod 202, thereby pushing the push rod 202 to move along the axis of the valve body 201 close to the valve body 201; similarly, after the operating rod 301 moves upward, the push rod 305 will be driven by the first connecting rod 302, the rotating rod 303 and the second connecting rod 304 to move along the axial direction of the valve body 201 in the direction away from the push rod 202 and disengage from the push rod 202, and the push rod 202 will be reset under the action of the first reset spring 204. According to the above scheme, the housing 100 is provided with a rotating shaft 103, the rotating rod 303 is rotatably connected to the rotating shaft 103, and can rotate around the rotating shaft 103; and, since the operating rod 301, the first connecting rod 302 and the rotating rod 303 are all rotatably connected, the rotating rod 303, the second connecting rod 304 and the top rod 305 are also rotatably connected; the housing 100, the operating rod 301, the first connecting rod 302 and the rotating rod 303 form a pair of sliders. Crank mechanism, a crank slider mechanism is formed between the shell 100, the rotating rod 303, the second connecting rod 304 and the push rod 305, and the rotational movement of the rotating rod 303 is driven by the linear movement of the operating rod 301, thereby driving the linear movement of the push rod 305, that is, the movement of the operating rod 301 will be transmitted to the push rod 305; under the driving force of the operating rod 301, the push rod 305 will push the push rod 202 of the direct push valve 200 to move in the direction close to the valve body 201.In some embodiments, the driving mechanism 300 further includes a guide column 306 and a fixing seat 307 fixedly arranged on the housing 100; the guide column 306 is arranged on the movement stroke of the operating rod 301, and the operating rod 301 is provided with a guide groove 3011 cooperating with the guide column 306 along its movement direction; the fixing seat 307 is provided with a first through hole 3071 along the axial direction of the valve body 201, the push rod 305 is adapted in the first through hole 3071, and the push rod 305 can perform linear motion along the first through hole 3071. In some embodiments, the guide groove 3011 is arranged at both the upper and lower ends of the operating rod 301, and the housing 100 is provided with two guide columns 306 respectively cooperating with the two guide grooves 3011, so that the linear motion of the operating rod 301 is more stable and will not deviate, thereby ensuring the motion stability of the driving mechanism 300, thereby ensuring the stability of the linear motion of the push rod 305 and the push rod 202. By adopting the above scheme, the linear movement of the operating rod 301 on the shell 100 can be limited by the cooperation between the guide column 306 and the guide groove 3011; the linear movement of the push rod 305 on the shell 100 can be limited by the cooperation between the push rod 305 and the first through hole 3071.

[0102] In some embodiments, the direct push valve 200 has a low-gear state and a high-gear state for the gas flow supplied to the gas fireplace; after the operating rod 301 moves downward, the operating rod 301 drives the push rod 305 to approach the push rod 202 along the axis of the valve body 201, and pushes the push rod 202 to move to the low-gear position along the axis of the valve body 201 in the direction close to the valve body 201, and the direct push valve 200 is in the low-gear state of the gas flow supplied to the gas fireplace; after the operating rod 301 moves upward, the operating rod 301 drives the push rod 305 to move away from the push rod 202 along the axis of the valve body 201, and the push rod 202 will reset to the high-gear position along the axis of the valve body 201 in the direction away from the valve body 201, and the direct push valve 200 is in the high-gear state of the gas flow supplied to the gas fireplace. In some embodiments, an operating handle 3013 is provided on the operating rod 301, and the operating handle 3013 extends out of the housing 100 to facilitate the operation of the user. By adopting the above solution, the movement of the operating rod 301 can realize two working states of the direct push valve 200 for supplying the gas flow to the gas fireplace, namely, a low-speed state and a high-speed state, which is convenient for the user to operate.

[0103] In some embodiments, a low-gear buffer positioning device 400 is provided between the operating rod 301 and the housing 100. When the operating rod 301 moves downward until the direct-push valve 200 is in a low-gear state, the operating rod 301 just contacts the low-gear buffer positioning device 400. Specifically, the operating rod 301 has a low-gear position and an ignition position. When the operating rod 301 moves to the low-gear position, the direct-push valve 200 is in a low-gear state; when the operating rod 301 moves to the ignition position, the direct-push valve 200 is in an ignition state. In some embodiments, when the operating rod 301 continues to move downward until the ignition position, the operating rod 301 can compress the low-gear buffer positioning device 400; and when the operating rod 301 is in a position between the low-gear and the ignition position, when the force applied to the operating rod 301 is removed, the operating rod 301 can automatically return to the low-gear position under the action of the low-gear buffer positioning device 400. In some embodiments, the low-gear buffer positioning device 400 includes a low-gear buffer fixing block 401, a low-gear buffer slide bar 402, and a low-gear buffer spring 403; the low-gear buffer fixing block 401 is fixedly arranged relative to the shell 100; the low-gear buffer fixing block 401 is provided with a second through hole 4011 along the movement direction of the operating rod 301; the low-gear buffer slide bar 402 is adapted in the second through hole 4011, and the low-gear buffer slide bar 402 can make a linear motion along the second through hole 4011; the operating rod 301 is placed at the top end of the low-gear buffer slide bar 402, and when the operating rod 301 moves downward until it is in contact with the top end of the low-gear buffer slide bar 402 When touched, the push valve 200 is in a low-gear position; and, the end of the low-gear buffer slide bar 402 away from the operating rod 301 is provided with a stop block 4021 which can abut against the bottom end of the low-gear buffer fixed block 401, and the end of the low-gear buffer slide bar 402 close to the operating rod 301 is provided with a low-gear buffer spring baffle 4022, and the low-gear buffer spring 403 is sleeved on the low-gear buffer slide bar 402, and one end abuts against the low-gear buffer spring baffle 4022, and the other end abuts against the top end of the low-gear buffer fixed block 401, and the low-gear buffer spring 403 can give the low-gear buffer slide bar 402 a tendency to always move in the direction close to the operating rod 301. In some embodiments, a low-gear buffer operating arm 3012 is provided at one end of the operating rod 301 close to the low-gear buffer slide rod 402, and a ball head 4023 is provided at one end of the low-gear buffer slide rod 402 close to the operating rod 301; when the operating rod 301 moves downward until the direct-push valve 200 is in a low-gear position, the low-gear buffer operating arm 3012 contacts the ball head 4023.With the above solution, when the operating rod 301 moves downward to the low-gear position, the low-gear buffer operating arm 3012 just contacts the low-gear buffer operating arm 3012, and at this time, the direct-push valve 200 is in the low-gear state; when the operating rod 301 continues to move downward to the ignition position, the low-gear buffer operating arm 3012 pushes the low-gear buffer sliding rod 402 to move downward, and the low-gear buffer spring 403 is compressed, and at this time, the direct-push valve 200 is in the ignition state; and when the operating rod 301 moves downward to the ignition position, the low-gear buffer operating arm 3012 pushes the low-gear buffer sliding rod 402 to move downward, and the low-gear buffer spring 403 is compressed, and at this time, the direct-push valve 200 is in the ignition state; When it is in a position between the low-gear position and the ignition position, after the force applied to the operating rod 301 is removed, the rebound force of the low-gear buffer spring 403 will give the low-gear buffer operating arm 3012 an upward force, thereby causing the operating rod 301 to return to the low-gear position; and since the end of the low-gear buffer slide rod 402 that contacts the low-gear buffer operating arm 3012 is configured as a ball head 4023, there is point contact between the low-gear buffer slide rod 402 and the low-gear buffer operating arm 3012, and the operation is smoother.

[0104] In some embodiments, a high-speed buffer positioning device 500 is provided between the push rod 305 and the fixed seat 307. When the operating rod 301 moves upward to the high-speed state of the direct-push valve 200, the high-speed buffer positioning device 500 just contacts the fixed seat 307. Specifically, the operating rod 301 has a high-speed position and a fire-off position. When the operating rod 301 moves to the high-speed position, the direct-push valve 200 is in the high-speed state; when the operating rod 301 moves to the fire-off position, the direct-push valve 200 is in the fire-off state. In some embodiments, the high-end buffer positioning device 500 includes a high-end buffer baffle 501 clamped on one end of the push rod 305 close to the push rod 202, a movable baffle 502 sleeved on one end of the push rod 305 close to the fixed seat 307, and a high-end buffer spring 503 sleeved on the push rod 305; one end of the high-end buffer spring 503 is against the high-end buffer baffle 501, and the other end is against the movable baffle 502; when the operating rod 301 moves upward and drives the push rod 305 to move until the movable baffle 502 contacts the fixed seat 307, the direct push valve 200 is in a high-end position; and the high-end buffer spring 503 can give the push rod 305 a tendency to always move in a direction close to the push rod 202. In some embodiments, a high-end buffer slot 3052 is provided on one end of the push rod 305 close to the push rod 202, and the high-end buffer baffle 501 is snapped into the high-end buffer slot 3052, thereby realizing the fixed installation of the high-end buffer baffle 501 on the push rod 305; a stop step 3053 is provided on one end of the push rod 305 close to the fixed seat 307, and the movable baffle 502 is abutted against the stop step 3053 under the action of the rebound force of the high-end buffer spring 503; and since the movable baffle 502 is sleeved on the push rod 305, under the action of external force, after the movable baffle 502 abuts against one end of the fixed seat 307 close to the direct push valve 200, the movable baffle 502 is restricted, and the high-end buffer spring 503 is compressed.With the above solution, when the operating rod 301 moves upward, the push rod 305 is driven to move along the axis of the valve body 201 in a direction away from the direct push valve 200, until the operating rod 301 reaches the high-end position. At this time, the movable baffle 502 just contacts the fixed seat 307, and the direct push valve 200 is in the high-end state; at this time, if the operating rod 301 continues to move upward, since the fixed seat 307 is fixed on the housing 100, the movable baffle 502 is restricted in the high-end state. When the high-end buffer spring 503 is on the fixed seat 307, the high-end buffer spring 503 will be compressed. At this time, if the force applied to the operating rod 301 is removed, the rebound force of the high-end buffer spring 503 will give a force to the high-end buffer baffle 501, so that it drives the push rod 305 to move in the direction close to the push rod 202, and the push rod 305 will drive the operating rod 301 to return to the high-end position, that is, the position of the operating rod 301 when the movable baffle 502 just contacts the fixed seat 307.

[0105] In some embodiments, the movement distance of the operating rod 301 is greater than the movement distance of the top rod 305, so as to realize the movement displacement reduction function of the driving mechanism 300; so that when operating the movement of the operating rod 301, the position of each gear can be distinguished more clearly.

[0106] In some embodiments, the direct push valve 200 includes a valve body 201, which is provided with an air inlet chamber 2011, a transition chamber 2012 and an air outlet chamber 2013 connected in sequence; and the valve body 201 includes an air inlet 2014 connected to the air inlet chamber 2011, and an air outlet 2015 connected to the air outlet chamber 2013; a push rod 202, which is arranged in the air outlet chamber 2013 and can move linearly along the axial direction of the air outlet chamber 2013; an intermediate sealing body 203, which is sleeved on the push rod 202. The push rod 202 is located at one end close to the air inlet chamber 2011; the first return spring 204 is sleeved on the push rod 202 and is located between the middle sealing body 203 and the tail of the push rod 202. The end of the push rod 202 close to the push rod 305 forms the tail of the push rod 202; the first return spring 204 can give the push rod 202 a tendency to always move in a direction away from the air outlet chamber 2013; the solenoid valve 205 is located at the valve body 201 close to the air inlet chamber 201 1, and the solenoid valve 205 includes a valve core 2051 that can move linearly along the axial direction of the air inlet chamber 2011, and a sealing block 2052 connected to one end of the valve core 2051 close to the air outlet chamber 2013, and the sealing block 2052 can separate the air inlet chamber 2011 from the transition chamber 2012; wherein the valve body 201 is provided with a first sealing ring 206 that can cooperate with the push rod 202 for sealing, and the first sealing ring 206 can seal the transition chamber 2012. The cavity 2012 is separated from the air outlet cavity 2013; a low-speed air path channel 2016 capable of connecting the transition cavity 2012 and the air outlet 2015 is arranged in the valve body 201, a low-speed adjustment rod 207 is arranged in the low-speed air path channel 2016, and a flow gap 208 is formed between the low-speed adjustment rod 207 and the inner wall of the low-speed air path channel 2016; the low-speed adjustment rod 207 is movably arranged in the low-speed air path channel 2016 to adjust the size of the flow gap 208. Specifically, a first sealing ring 206 is provided between the transition chamber 2012 and the outlet chamber 2013. Through the cooperation and sealing of the push rod 202 and the first sealing ring 206, the airflow entering from the air inlet chamber 2011 can only flow from the low-grade air path 2016 to the outlet 2015; and when the seal of the push rod 202 and the first sealing ring 206 is released, the airflow entering from the air inlet chamber 2011 can flow from the low-grade air path 2016 to the outlet 2015, and can flow from the outlet chamber 2013 to the outlet 2015. There are two paths to lead the airflow out, so a high fire state can be achieved. In some embodiments, a second return spring 2053 is provided between the valve core 2051 and the sealing block 2052. The second return spring 2053 can give the valve core 2051 a tendency to always move in the direction close to the transition chamber 2012.By adopting the above scheme, a low-speed working state can be achieved by setting up a low-speed air path channel 2016; by setting up a low-speed adjustment rod 207 in the low-speed air path channel 2016, the low-speed adjustment rod 207 can be adjusted as needed, thereby adjusting the size of the flow gap 208 between the low-speed adjustment rod 207 and the inner wall of the low-speed air path channel 2016, and then adjusting the flow rate flowing to the air outlet 2015.

[0107] In some embodiments, the valve body 201 is further provided with a long-fire air outlet 2019 connected to the transition chamber 2012 .

[0108] In some embodiments, the low-grade air path channel 2016 includes a low-grade air inlet channel 2016a connected to the transition chamber 2012, and a low-grade air outlet channel 2016b connected to the air outlet 2015, and the low-grade air inlet channel 2016a and the low-grade air outlet channel 2016b intersect; the low-grade air inlet channel 2016a or the low-grade air outlet channel 2016b extends along the axial direction to form a low-grade adjustment port 2017, and the low-grade adjustment rod 207 is arranged in the low-grade adjustment port 2017 and can make a linear motion along the axial direction of the low-grade adjustment port 2017; the low-grade adjustment rod 207 includes a first shaft portion 2071 and a second shaft portion 2072 connected in sequence along the axial direction of the low-grade adjustment port 2017, the shaft diameter of the first shaft portion 2071 is smaller than the shaft diameter of the second shaft portion 2072, and the first shaft portion 2071 and the second shaft portion 2072 are connected in sequence. A transition shaft portion 2073 is formed, and the first shaft portion 2071 can extend into the low-speed air intake channel 2016a or the low-speed air outlet channel 2016b, and the flow gap 208 is formed between the transition shaft portion 2073 and the inner wall of the low-speed air path channel 2016; and since the outer surface of the transition shaft portion 2073 is a transition curved surface connecting the outer surfaces of the first shaft portion 2071 and the second shaft portion 2072, when the low-speed adjustment rod 207 moves along the axial direction of the low-speed adjustment port 2017 toward the direction away from the low-speed air intake channel 2016a or the low-speed air outlet channel 2016b, the size of the flow gap 208 changes from small to large; when the low-speed adjustment rod 207 moves along the axial direction of the low-speed adjustment port 2017 toward the low-speed air intake channel 2016a or the low-speed air outlet channel 2016b, the size of the flow gap 208 changes from large to small. In some embodiments, the low-speed air inlet channel 2016a and the low-speed air outlet channel 2016b are perpendicular. With the above solution, when the low-speed adjustment rod 207 moves linearly along the axial direction of the low-speed adjustment port 2017, the size of the flow gap 208 between the low-speed adjustment rod 207 and the inner wall of the low-speed air passage 2016 can be adjusted, thereby adjusting the flow rate to the air outlet 2015.

[0109] In some embodiments, a second sealing ring 209 is arranged between the low-gear adjustment rod 207 and the low-gear adjustment port 2017. An interference fit is adopted between the second sealing ring 209 and the low-gear adjustment port 2017, thereby achieving sealing between the second sealing ring 209 and the low-gear adjustment port 2017. An interference fit is adopted between the second sealing ring 209 and the low-gear adjustment rod 207, thereby achieving sealing between the second sealing ring 209 and the resisting adjustment rod 207, thereby ensuring sealing between the resisting adjustment rod 207 and the low-gear adjustment port 2017 to prevent airflow leakage, with high safety. In some embodiments, the low-gear adjustment rod 207 and the low-gear adjustment port 2017 are connected by a threaded connection; the tail end of the low-gear adjustment rod 207 is provided with a mating portion 2074 that can cooperate with an external structure, so that the low-gear adjustment rod 207 can make a linear motion along the axial direction of the low-gear adjustment port 2017, and the mating portion 2074 includes a cross groove, a slotted groove and other structures, and a common screwdriver can be used to conveniently screw the low-gear adjustment rod 207 in or out, thereby adjusting the size of the flow gap 208 formed between the low-gear adjustment rod 207 and the low-gear air path 2016, which is easy to operate.

[0110] In some embodiments, the low-grade air outlet channel 2016b is formed with the low-grade regulating port 2017 along the axial extension; the low-grade air inlet channel 2016a is formed with a process hole 2018 along the axial extension, and a plug 210 is adapted in the process hole 2018. In some embodiments, the plug 210 includes a steel ball, and an interference fit is adopted between the plug 210 and the process hole 218. After the plug 210 is assembled into the process hole 218, the process hole 2018 can be sealed, thereby ensuring the sealing of the low-grade air path channel 2016, and the sealing is good. With the above scheme, the low-grade air path channel 2016 is machined and formed. Due to the process manufacturing reason, a process hole 2018 is usually formed. In order to block the process hole 2018, the process hole 2018 can be blocked by the plug 210 to ensure the sealing of the low-grade air path channel 2016.

[0111] In some embodiments, the head of the push rod 202 is provided with a bevel 2021, which plays a guiding role so that the movement of the push rod 202 is smoother, especially when the push rod 202 is adapted to the inner hole of the first sealing ring 206, the bevel 2021 can enable the push rod 202 to enter smoothly without scratching the inner hole of the first sealing ring 206; the tail of the push rod 202 is a round shaft structure, and a notch 2022 is provided at one end of the tail of the push rod 202 close to the middle sealing body 203 to release the air pressure in the space formed between the tail of the push rod 202 and the inner wall of the valve body 201. By adopting the above scheme, when the push rod 202 makes a linear motion along the axial direction of the air outlet cavity 2013, the tail of the push rod 202 cooperates with the inner wall of the valve body 201 to move. Since the gap between the tail of the push rod 202 and the inner wall of the valve body 201 is relatively small, and when in use, due to the effect of grease, the tail of the push rod 202 and the inner wall of the valve body 201 will be in a sealed state, then, when the push rod 202 makes a linear motion, the air pressure in the space formed between the tail of the push rod 202 and the inner wall of the valve body 201 is also changing. The setting of the notch 2022 can release the air pressure in the space formed between the tail of the push rod 202 and the inner wall of the valve body 201, which has high safety.

[0112] In some embodiments, the control system further includes a primary fire device 600 and an ignition and fire-off control device 700; the primary fire device 600 includes an ignition nozzle 601, an ignition needle 602 and a thermocouple 603, the ignition nozzle 601 is connected to the long-fire outlet 2019 on the direct-push valve 200, the thermocouple 603 is connected to the solenoid valve 205, the thermocouple 603 will generate a thermoelectric potential under the action of the flame, and the thermoelectric potential generated on the thermocouple 603 can keep the solenoid valve 205 attracted; the ignition and fire-off control device 700 includes an ignition travel switch 701, a fire-off travel switch 702 and a primary fire device 6 ...; the ignition nozzle 601 is connected to the long-fire outlet 2019 on the direct-push valve 200, the thermocouple 603 is connected to the solenoid valve 205, the thermocouple 603 will generate a thermoelectric potential under the action of the flame The igniter 703 is connected to the ignition needle 602, the ignition stroke switch 701 is connected in series with the igniter 703 and the ignition needle 602, and the fire-off stroke switch 702 is connected in series with the solenoid valve 205 and the thermocouple 603. In some embodiments, an ignition switch operating arm 3051 is provided on the top rod 305, and when the operating rod 301 moves downward to the ignition position, the ignition switch operating arm 3051 can touch the ignition stroke switch 701. In some embodiments, the ignition travel switch 701 is relatively arranged above the push rod 305, and an ignition switch operating arm 3051 is arranged at one end of the push rod 305 close to the ignition travel switch 701, and when the operating rod 301 moves downward to the ignition position, the push rod 305 moves toward the direction close to the push rod 202 until the ignition switch operating arm 3051 just triggers the ignition travel switch 701. In some embodiments, an ignition switch operating arm 3031 is arranged on the rotating rod 303, and when the operating rod 301 moves upward to the ignition-off position, the ignition-off switch operating arm 3031 can touch the ignition-off travel switch 702. In some embodiments, the fire-off switch operating arm 3031 is provided above the rotating rod 303, and the fire-off travel switch 702 is relatively arranged at one end of the rotating rod 303 close to the push rod 202. When the operating rod 301 moves upward to the fire-off position, the rotating rod 303 rotates around the rotating axis 103 so that the fire-off switch operating arm 3031 moves relatively downward until it just triggers the fire-off travel switch 702.

[0113] The working principle of this utility model:

[0114] The driving mechanism 300 is actually composed of a pair of slider crank mechanism and a pair of crank slider mechanism, which converts the linear motion of the operating rod 301 in the vertical direction into the linear motion of the push rod 305 in the horizontal direction, and reduces the distance of the motion displacement to adapt to the stroke change of the push rod 202 of the direct push valve 200. Since the push rod 305 is in linear motion, the axis of the push rod 202 of the direct push valve 200 is set in the same direction as the movement of the push rod 305, so that when the push rod 305 pushes the push rod 202, it pushes the push rod 202 horizontally, and there is no relative displacement between the push rod 305 and the push rod 202, which makes the operation of the direct push valve 200 smoother, and there is no wear on the push rod 202, thereby improving the service life of the direct push valve 200.

[0115] The direct push valve 200 is a direct push valve 200 with an adjustable low-range flow channel, which not only conveniently realizes high-range and low-range gas supply states, but also can adjust the low-range flow size to meet the low-range flame size requirements of different products.

[0116] The low-range buffer reset device and the high-range buffer reset device, the operating rod 301 can automatically return to the low-range position or the high-range position, so that the user can easily set the gas fireplace to the low-range position or the high-range position.

[0117] Ignition: When the user presses the operating handle 3013 and presses it to the bottom, the operating rod 301 moves downward, and the push rod 305 moves toward the direction of the push valve 200 until the push rod 202 is pushed toward the direction close to the air inlet chamber 2011, and the sealing block 2052 is pushed to make the solenoid valve 205 in the suction position, the second return spring 2053 is compressed, and the first return spring 204 is compressed; at this time, the air inlet chamber 2011 is connected with the long-fire outlet 2019, and the gas can enter the ignition nozzle 601 of the mother fire device 600 through the air inlet chamber 2011 of the push valve 200, and at this time, the ignition switch operating arm 3051 triggers the ignition travel switch 701, thereby controlling the igniter 703 to discharge and ignite the ignition needle 602; and in the ignition state, the low-end buffer spring 403 is in a compressed state under the action of the operating rod 301;

[0118] Low gear: After the flame is ignited, the user can release the force applied to the operating handle 3013, and the operating rod 301 automatically moves upward under the action of the rebound force of the low-gear buffer spring 403, thereby driving the push rod 305 to move in the direction away from the direct push valve 200; at this time, under the action of the rebound force of the first return spring 204, the push rod 202 moves in the direction away from the air inlet chamber 2011 until the outer circumferential surface of the push rod 202 close to the head is separated from the first sealing ring 206. The slide bar 402 and the low-speed buffer operating arm 3012 are just at the critical point of separation. At this time, the outer circumferential surface of the push rod 202 close to the head and the first sealing ring 206 are in a sealed state. After the gas in the air inlet chamber 2011 enters the transition chamber 2012, it can enter the air outlet 2015 through the low-speed gas path 2016 to be burned by the gas fireplace burner. At this time, it is a low-speed flow state; and the thermocouple 603 generates a thermoelectric potential under the action of the flame, and the generated thermoelectric potential can maintain the solenoid valve 205 in the attracted state;

[0119] High gear: In the low gear state, the user operates the operating handle 3013 to lift the operating rod 301 upward, thereby driving the push rod 305 to continue to move in the direction away from the push valve 200, until the movable baffle 502 just contacts the fixed seat 307, which is the high gear position. At this time, if the operating rod 301 continues to be lifted upward, under the action of the high-speed return spring, the resistance will increase significantly to remind the user that the operating rod 301 is already in the high gear position. Even if the user applies too much force and the operating rod 301 slightly exceeds the high gear position, as long as the force applied to the operating handle 3013 is removed, the operating rod 301 will also rebound under the high-speed return spring. When the push rod 202 moves from the low-gear position to the high-gear position, the push rod 202 continues to move away from the air inlet chamber 2011 under the action of the first return spring 204, and the outer circumferential surface of the push rod 202 close to the head is out of contact with the first sealing ring 206, and the transition chamber 2012 is connected with the air outlet chamber 2013, and the gas in the transition chamber 2012 can enter the air outlet 2015 through the air outlet chamber 2013, and the caliber of this air path is larger than the caliber of the low-gear air path channel 2016, forming a larger airflow to flow to the air outlet 2015, that is, the high-gear flow state, and the flame of the gas fireplace is in a high-gear size state;

[0120] Turning off the flame: In the high-speed state, the user can continue to lift the operating rod 301 upward to overcome the force of the high-speed return spring until the flame-off position is reached. At this time, the flame-off switch operating arm 3031 acts on the flame-off travel switch 702 to disconnect the thermocouple 603 from the solenoid valve 205. Since the solenoid valve 205 cannot obtain the thermoelectric potential generated by the thermocouple 603, the solenoid valve 205 cannot maintain the closed state. Under the action of the second return spring 2053, the sealing block 2052 seals and isolates the air inlet chamber 2011 from the transition chamber 2012, and the direct-push valve 200 is in a closed state, thereby realizing the flame-off operation;

[0121] Reset: When the fire is turned off, when the force applied to the operating rod 301 is removed, under the action of the high-speed reset spring, the operating rod 301 is driven by the push rod 305 to return to the high-speed position. However, at this time, since the direct push valve 200 is in a closed state, the gas fireplace is also in a closed state, that is, the gas fireplace is in a standby reset state.

[0122] The same and similar parts between the various embodiments in this specification can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0123] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A control system for a gas fireplace, characterized in that: include Housing (100); A direct push valve (200) is arranged on the housing (100), and the direct push valve (200) comprises a valve body (201) and a push rod (202) arranged along the axis of the valve body (201); A driving mechanism (300) is disposed on the housing (100), and the driving mechanism (300) is capable of driving the push rod (202) to perform linear motion along the axis of the valve body (201); The driving mechanism (300) comprises an operating rod (301) that moves linearly along the housing (100), a first connecting rod (302) hinged to the bottom end of the operating rod (301), a rotating rod (303) hinged to the other end of the first connecting rod (302), a second connecting rod (304) hinged to the other end of the rotating rod (303), and a top rod (305) hinged to the other end of the second connecting rod (304); wherein the housing (100) is provided with a rotating shaft (103) The rotating rod (303) is capable of rotating around the rotating shaft (103); the push rod (305) is capable of performing linear motion along the axis of the valve body (201); when the operating rod (301) performs linear motion along the first direction, it pushes the push rod (305) to perform linear motion along the axis of the valve body (201); when the push rod (305) performs linear motion along the axis of the valve body (201), it pushes the push rod (202) to perform linear motion along the axis of the valve body (201).

2. The gas fireplace control system according to claim 1, characterized in that: The movement direction of the operating rod (301) and the movement direction of the push rod (305) are perpendicular to each other.

3. The control system of the gas fireplace according to claim 1, characterized in that: The driving mechanism (300) further comprises a guide column (306) and a fixing seat (307) fixedly arranged on the housing (100); the guide column (306) is arranged on the movement stroke of the operating rod (301), and the operating rod (301) is provided with a guide groove (3011) cooperating with the guide column (306) along its movement direction; the fixing seat (307) is provided with a first through hole (3071) along the axial direction of the valve body (201), the push rod (305) is adapted in the first through hole (3071), and the push rod (305) can make a linear motion along the first through hole (3071).

4. The control system of the gas fireplace according to claim 1, characterized in that: The direct push valve (200) has a low-gear state for the gas flow supplied to the gas fireplace; after the operating rod (301) moves downward, the operating rod (301) drives the push rod (305) to approach the push rod (202) along the axis of the valve body (201), and pushes the push rod (202) to move along the axis of the valve body (201) in a direction close to the valve body (201) to a low-gear position, and the direct push valve (200) is in a low-gear state for the gas flow supplied to the gas fireplace.

5. The gas fireplace control system according to claim 4, characterized in that: A low-gear buffer positioning device (400) is provided between the operating rod (301) and the housing (100); when the operating rod (301) moves downward until the push valve (200) is in a low-gear state, the operating rod (301) just contacts the low-gear buffer positioning device (400).

6. The control system of the gas fireplace according to claim 5, characterized in that: The low-gear buffer positioning device (400) comprises a low-gear buffer fixing block (401), a low-gear buffer slide bar (402), and a low-gear buffer spring (403); the low-gear buffer fixing block (401) is fixedly arranged relative to the housing (100); the low-gear buffer fixing block (401) is provided with a second through hole (4011) along the movement direction of the operating rod (301); the low-gear buffer slide bar (402) is adapted in the second through hole (4011), and the low-gear buffer slide bar (402) can make a linear motion along the second through hole (4011); the operating rod (301) is placed at the top end of the low-gear buffer slide bar (402), and when the operating rod (301) moves downward until it contacts the top end of the low-gear buffer slide bar (402), the direct push valve (200) is in a low-gear position; In addition, a stop block (4021) capable of abutting against the bottom end of the low-gear buffer fixed block (401) is provided at one end of the low-gear buffer slide bar (402) away from the operating rod (301), and a low-gear buffer spring block (4022) is provided at one end of the low-gear buffer slide bar (402) close to the operating rod (301). The low-gear buffer spring (403) is sleeved on the low-gear buffer slide bar (402), and one end abuts against the low-gear buffer spring block (4022), and the other end abuts against the top end of the low-gear buffer fixed block (401). The low-gear buffer spring (403) can give the low-gear buffer slide bar (402) a tendency to always move in a direction close to the operating rod (301).

7. The control system of the gas fireplace according to claim 6, characterized in that: A low-gear buffer operating arm (3012) is provided at one end of the operating rod (301) close to the low-gear buffer slide rod (402), and a ball head (4023) is provided at one end of the low-gear buffer slide rod (402) close to the operating rod (301); when the operating rod (301) moves downward until the push valve (200) is in a low-gear position, the low-gear buffer operating arm (3012) contacts the ball head (4023).

8. The gas fireplace control system according to claim 3, characterized in that: The direct push valve (200) has a high-end state for the gas flow supplied to the gas fireplace; after the operating rod (301) moves upward, the operating rod (301) drives the push rod (305) to move away from the push rod (202) along the axis of the valve body (201), and the push rod (202) is reset to a high-end position along the axis of the valve body (201) in a direction away from the valve body (201), and the direct push valve (200) is in a high-end state for the gas flow supplied to the gas fireplace.

9. The control system of the gas fireplace according to claim 8, characterized in that: A high-grade buffer positioning device (500) is provided between the push rod (305) and the fixed seat (307). When the operating rod (301) moves upward until the push valve (200) is in a high-grade state, the high-grade buffer positioning device (500) just contacts the fixed seat (307).

10. The gas fireplace control system according to claim 9, characterized in that: The high-end buffer positioning device (500) comprises a high-end buffer baffle (501) clamped on one end of the push rod (305) close to the push rod (202), a movable baffle (502) sleeved on one end of the push rod (305) close to the fixed seat (307), and a high-end buffer spring (503) sleeved on the push rod (305); one end of the high-end buffer spring (503) abuts against the high-end buffer baffle (501), and the other end abuts against the movable baffle (502); when the operating rod (301) moves upward and drives the push rod (305) to move until the movable baffle (502) contacts the fixed seat (307), the direct push valve (200) is in the high-end position; and the high-end buffer spring (503) can give the push rod (305) a tendency to always move in a direction close to the push rod (202).

11. The gas fireplace control system according to claim 1, characterized in that: The movement distance of the operating rod (301) is greater than the movement distance of the top rod (305).

12. The gas fireplace control system according to claim 1, characterized in that: The direct push valve (200) comprises A valve body (201), wherein an air inlet cavity (2011), a transition cavity (2012) and an air outlet cavity (2013) are sequentially connected to each other; and the valve body (201) comprises an air inlet (2014) communicating with the air inlet cavity (2011), and an air outlet (2015) communicating with the air outlet cavity (2013); A push rod (202), which is disposed in the air outlet cavity (2013) and can perform linear motion along the axial direction of the air outlet cavity (2013); An intermediate sealing body (203) is sleeved on one end of the push rod (202) close to the air inlet cavity (2011); a first return spring (204), which is sleeved on the push rod (202) and located between the middle sealing body (203) and the tail of the push rod (202), and one end of the push rod (202) close to the push rod (305) forms the tail of the push rod (202); the first return spring (204) can give the push rod (202) a tendency to always move in a direction away from the air outlet cavity (2013); A solenoid valve (205) is arranged at one end of the valve body (201) close to the air inlet chamber (2011), and the solenoid valve (205) comprises a valve core (2051) capable of linear motion along the axial direction of the air inlet chamber (2011), and a sealing block (2052) connected to one end of the valve core (2051) close to the air outlet chamber (2013), wherein the sealing block (2052) is capable of separating the air inlet chamber (2011) from the transition chamber (2012); The valve body (201) is provided with a first sealing ring (206) capable of cooperating with the push rod (202) for sealing, and the first sealing ring (206) is capable of separating the transition chamber (2012) and the air outlet chamber (2013); the valve body (201) is provided with a low-speed air path channel (2016) capable of connecting the transition chamber (2012) and the air outlet (2015); the low-speed air path channel (2016) is provided with a low-speed adjustment rod (207), and a flow gap (208) is formed between the low-speed adjustment rod (207) and the inner wall of the low-speed air path channel (2016); the low-speed adjustment rod (207) is movably arranged in the low-speed air path channel (2016) to adjust the size of the flow gap (208).

13. The gas fireplace control system according to claim 12, characterized in that: The low-gear air path channel (2016) comprises a low-gear air inlet channel (2016a) in communication with the transition chamber (2012), and a low-gear air outlet channel (2016b) in communication with the air outlet (2015), wherein the low-gear air inlet channel (2016a) and the low-gear air outlet channel (2016b) intersect each other; the low-gear air inlet channel (2016a) or the low-gear air outlet channel (2016b) is extended along the axial direction to form a low-gear adjustment port (2017), and the low-gear adjustment rod (207) is arranged in the low-gear adjustment port (2017) and can perform linear motion along the axial direction of the low-gear adjustment port (2017); The low-gear adjustment rod (207) comprises a first shaft portion (2071) and a second shaft portion (2072) which are sequentially connected along the axial direction of the low-gear adjustment port (2017); the shaft diameter of the first shaft portion (2071) is smaller than the shaft diameter of the second shaft portion (2072); a transition shaft portion (2073) is formed between the first shaft portion (2071) and the second shaft portion (2072); the first shaft portion (2071) can extend into the low-gear air intake passage (2016a) or the low-gear air outlet passage (2016b); and the flow gap (208) is formed between the transition shaft portion (2073) and the inner wall of the low-gear air passage (2016); The outer surface of the transition shaft portion (2073) is a transition curved surface connecting the outer surfaces of the first shaft portion (2071) and the second shaft portion (2072). When the low-gear adjustment rod (207) moves along the axial direction of the low-gear adjustment port (2017) in a direction away from the low-gear air intake passage (2016a) or the low-gear air outlet passage (2016b), the size of the flow gap (208) changes from small to large; when the low-gear adjustment rod (207) moves along the axial direction of the low-gear adjustment port (2017) in a direction close to the low-gear air intake passage (2016a) or the low-gear air outlet passage (2016b), the size of the flow gap (208) changes from large to small.

14. The gas fireplace control system according to claim 13, characterized in that: A second sealing ring (209) is provided between the low-gear adjustment rod (207) and the low-gear adjustment port (2017); an interference fit is formed between the second sealing ring (209) and the low-gear adjustment rod (207); and an interference fit is formed between the second sealing ring (209) and the low-gear adjustment port (2017); the low-gear adjustment rod (207) and the low-gear adjustment port (2017) are connected by threaded connection.

15. The gas fireplace control system according to claim 13, characterized in that: One of the low-speed air inlet channel (2016a) and the low-speed air outlet channel (2016b) is extended along the axial direction to form the low-speed regulating port (2017); the other of the low-speed air inlet channel (2016a) and the low-speed air outlet channel (2016b) is extended along the axial direction to form a process hole (2018), and a plug (210) is adapted in the process hole (2018).

16. The gas fireplace control system according to claim 1, characterized in that: The control system also includes a pilot fire device (600) and an ignition and shutoff control device (700); The primary fire device (600) comprises an ignition nozzle (601), an ignition needle (602) and a thermocouple (603); the ignition nozzle (601) is connected to a long-fire air outlet (2019) on the direct-push valve (200); and the thermocouple (603) is connected to a solenoid valve (205) on the direct-push valve (200); The ignition and ignition control device (700) comprises an ignition travel switch (701), an ignition ignition travel switch (702) and an igniter (703), so that the ignition travel switch (701) is arranged at a position where the operating rod (301) moves downward to the ignition position and the driving mechanism (300) can touch the ignition travel switch (701), and the ignition ignition travel switch (702) is arranged at a position where the operating rod (301) moves upward to the ignition ignition position and the driving mechanism (300) can touch the ignition travel switch (702); the igniter (703) is connected to the ignition needle (602), the ignition travel switch (701) is connected in series with the igniter (703) and the ignition needle (602), and the ignition ignition travel switch (702) is connected in series with the solenoid valve (205) and the thermocouple (603).

17. The gas fireplace control system according to claim 16, characterized in that: An ignition switch operating arm (3051) is provided on the top rod (305). When the operating rod (301) moves downward to the ignition position, the ignition switch operating arm (3051) can touch the ignition travel switch (701).

18. The control system of the gas fireplace according to claim 16, characterized in that: The rotating rod (303) is provided with a fire switch operating arm (3031), and when the operating rod (301) moves upward to the fire-off position, the fire-off switch operating arm (3031) can touch the fire-off travel switch (702).

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