Control system of gas fireplace

Abstract

The utility model discloses a control system of a gas fireplace. The control system comprises a furnace body, the direct push valve is arranged at the bottom of the furnace body, 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 furnace body, and the driving mechanism can drive the push rod to do linear motion along the axis of the valve body; the driving mechanism comprises a rotatable handle hinged to the furnace body, a moving rod connected with the handle, and an ejector rod connected with the moving rod; wherein a rotating shaft is arranged on the furnace body, and the handle can rotate around the rotating shaft; the moving rod is mounted on the side surface of the furnace body and can linearly move along the side surface of the furnace body; the ejector rod can do linear motion along the axis of the valve body. When the handle rotates around the rotating shaft, the moving rod is pushed to move, then 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 control systems for gas fireplaces, in particular to a control system for a gas fireplace. Background Art

[0002] Gas fireplaces are becoming increasingly popular among consumers because they not only offer the visual appeal of realistic flames but also provide excellent heating. As decorative gas appliances, gas fireplaces typically require minimal or concealed operating components. Control components such as valves are typically located at the bottom of the appliance, placing the operating components and the valves that control the gas supply at a considerable distance. This necessitates a suitable motion mechanism to transmit motion from the operating components to the valves, controlling their opening and closing. This motion mechanism, along with the valves and associated ignition, shutoff, and detection devices, constitutes the gas fireplace control system.

[0003] Currently, 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 motion transmission; while direct-push valves use linear motion, a single motion, and are simple and convenient to operate, making them suitable for situations where long-distance motion transmission control is required on gas fireplaces.

[0004] Freestanding real-fire gas fireplaces that imitate wood-burning fireplaces generally have a decorative handle. However, since the handle on a gas fireplace only serves a decorative purpose and has no other specific functional operations, it results in a structural waste of function. However, in order to control the ignition and shutoff of the gas fireplace, additional operating parts are required to operate the gas fireplace. The exposed operating parts affect the overall appearance of the product. Utility Model Content

[0005] (1) Technical issues to be solved

[0006] The technical problem to be solved by the present invention is to provide a control system for a gas fireplace, which not only conveniently realizes the high-speed and low-speed working states of the gas fireplace, reduces the wear on the push rod of the direct-push valve, and increases the service life of the direct-push valve, but also organically combines the operating parts of the gas fireplace with the decorative handle, so that the ignition, shutdown and high-low gear adjustment of the gas fireplace can be conveniently controlled through the decorative handle, and has a simple structure and a neat appearance.

[0007] (2) Technical solution

[0008] The solution adopted by the present invention to solve the above-mentioned technical problems is a control system for a gas fireplace, comprising a furnace body; a direct-push valve, which is arranged at the bottom of the furnace body, and the direct-push valve includes a valve body and a push rod arranged along the axis of the valve body; a driving mechanism, which is arranged on the furnace body, and the driving mechanism is capable of driving the push rod to perform linear motion along the axis of the valve body; the driving mechanism includes a handle hingedly mounted on the furnace body and rotatable, a moving rod connected to the handle, and a push rod connected to the moving rod; wherein the furnace body is provided with a rotating shaft, and the handle is capable of rotating around the rotating shaft; the moving rod is mounted on the side surface of the furnace body and can perform linear motion along the side surface of the furnace body; the push rod is capable of performing linear motion along the axis of the valve body; when the handle rotates around the rotating shaft, it pushes the moving rod to move and thereby pushes the push rod 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, it pushes the push rod to perform linear motion along the axis of the valve body.

[0009] In some embodiments, the movement direction of the push rod and the movement direction of the movable rod are perpendicular to each other, and the movement direction of the movable rod and the rotation axis of the handle are perpendicular to each other; and the movement direction of the push rod and the movement direction of the movable rod are in the same plane.

[0010] In some embodiments, the movement direction of the push rod is the same as the movement direction of the push rod. Under the driving force of the handle, the push rod will push the push rod of the direct push valve to move toward the valve body.

[0011] In some embodiments, the handle includes a handle and a crank connecting rod, and the crank connecting rod is hinged to the furnace body; the driving mechanism also includes a first connecting rod hinged to the crank connecting rod, and the first connecting rod is hinged to the moving rod at one end away from the crank connecting rod; the moving rod is hinged to a second connecting rod at the other end along its movement direction, and the second connecting rod is hinged to the top rod at one end away from the moving rod.

[0012] In some embodiments, the connection between the first connecting rod and the crank connecting rod is arranged on the side of the hinge between the crank connecting rod and the furnace body away from the movable rod; after the crank connecting rod rotates downward, the end of the first connecting rod hinged to the crank connecting rod also rotates downward, and the hinge between the first connecting rod and the movable rod is pushed downward; so that the downward rotation of the handle can drive the movable rod to move downward.

[0013] By adopting the above scheme, after the crank connecting rod rotates downward, the end of the first connecting rod hinged to the crank connecting rod also rotates downward, and the hinge point of the first connecting rod and the movable rod is pushed to move downward. Since the movable rod can move along the surface of the furnace body, the hinge point of the movable rod and the second connecting rod is pushed to move downward, and since the push rod is restricted to move along the axial direction of the valve body, the second connecting rod will push the push rod to move in the direction close to the push rod, thereby pushing the push rod to move along the axis of the valve body close to the valve body; similarly, after the handle rotates upward, the push rod will be driven to move along the axial direction of the valve body in the direction away from the push rod through the first connecting rod, the movable rod and the second connecting rod, and disengage from the push rod, and the push rod will be reset under the action of the first return spring.

[0014] In some embodiments, the connection between the first connecting rod and the crank connecting rod is relatively arranged on the side of the hinge between the crank connecting rod and the furnace body close to the movable rod; after the crank connecting rod rotates upward, the end of the first connecting rod hinged to the crank connecting rod rotates downward, and the hinge between the first connecting rod and the movable rod is pushed downward; so that the upward rotation of the handle can drive the movable rod to move downward.

[0015] By adopting the above scheme, after the crank connecting rod rotates upward, the end of the first connecting rod hinged to the crank connecting rod rotates downward, and the hinge between the first connecting rod and the movable rod is pushed to move downward. Since the movable rod can move along the surface of the furnace body, the hinge between the movable rod and the second connecting rod is pushed to move downward. Since the push rod is restricted to move along the axial direction of the valve body, the second connecting rod will push the push rod to move in the direction close to the push rod, thereby pushing the push rod to move along the axis of the valve body close to the valve body; similarly, after the handle rotates downward, the push rod will be driven by the first connecting rod, the movable rod and the second connecting rod to move along the axial direction of the valve body in the direction away from the push rod and disengage from the push rod, and the push rod will be reset under the action of the first return spring.

[0016] In accordance with any of the above two solutions, a movable rod is provided on the furnace body, and the movable rod is restricted to linear motion on the surface of the furnace body; and since the crank connecting rod, the first connecting rod and the movable rod are all rotationally connected, the movable rod, the second connecting rod and the ejector rod are also rotationally connected; a crank slider mechanism is formed between the furnace body, the crank connecting rod, the first connecting rod and the movable rod, and a double slider mechanism is formed between the furnace body, the movable rod, the second connecting rod and the ejector rod, so that the linear motion of the movable rod is driven by the rotational motion of the handle, and thus the linear motion of the ejector rod can be driven, that is, the motion of the handle is transmitted to the ejector rod;

[0017] Furthermore, in order to push the push rod of the direct-push valve to move toward the direction close to the valve body, no matter whether the handle is rotated downward or upward, this can only be achieved by causing the moving rod to move downward.

[0018] In some embodiments, the driving mechanism also includes a guide column and a fixed seat fixed on the furnace body; the guide column is arranged on the movement stroke of the moving rod, and the moving 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.

[0019] In some embodiments, the guide grooves are provided at the upper and lower ends of the movable rod, and the furnace body is provided with two guide columns respectively cooperating with the two guide grooves, so that the linear motion of the movable 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.

[0020] By adopting the above solution, the linear motion of the movable rod on the furnace body can be limited by the cooperation between the guide column and the guide groove; the linear motion of the push rod on the furnace body can be limited by the cooperation between the push rod and the first through hole.

[0021] In some embodiments, the direct-push valve has a low-gear state for the gas flow supplied to the gas fireplace; after the handle is rotated, the handle 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 direction close to the valve body to a low-gear position, and the direct-push valve is in a low-gear state for the gas flow supplied to the gas fireplace.

[0022] In some embodiments, after the handle is rotated in the opposite direction, the crank connecting rod drives the push rod along the axis of the valve body away from the push rod. When the push rod is reset to a high-end position along the axis of the valve body in a direction away from the valve body, the direct push valve is in a high-end state of gas flow supplied to the gas fireplace.

[0023] With the above solution, the direct-push valve can be operated in two working states, a low-speed state and a high-speed state, for supplying gas flow to the gas fireplace through the rotation of the handle, thereby facilitating operation by the user.

[0024] In some embodiments, a low-gear buffer positioning device is provided between the moving rod and the furnace body. When the moving rod moves downward until the push valve is in a low-gear state, the moving rod is just in a position that just triggers the low-gear buffer positioning device to start working.

[0025] Specifically, the handle and the moving rod have a low-gear position and an ignition position. When the moving rod moves to the low-gear position, the direct-push valve is in a low-gear state; when the moving rod moves to the ignition position, the direct-push valve is in an ignition state.

[0026] In some embodiments, when the movable rod continues to move downward to the ignition position, the movable rod can compress the low-gear buffer positioning device; and when the handle is in a position between the low gear and the ignition, when the force applied to the handle is removed, the movable rod and the handle can automatically return to the low-gear position under the action of the low-gear buffer positioning device.

[0027] In some embodiments, the low-gear buffer positioning device includes a low-gear buffer fixing block, a low-gear buffer sliding rod, a low-gear buffer spring, and a low-gear buffer operating arm; the low-gear buffer fixing block is fixed relative to the moving rod; the low-gear buffer fixing block is provided with a second through-hole along the movement direction of the moving rod; the low-gear buffer sliding rod is adapted in the second through-hole, and the low-gear buffer sliding rod can perform linear movement along the second through-hole; the low-gear buffer operating arm is fixedly mounted on the furnace body and is located below the low-gear buffer sliding rod; The low-gear buffer slide bar is provided with a stop block capable of abutting against the top end of the low-gear buffer fixed block at one end away from the low-gear buffer operating arm, and a low-gear buffer spring block is provided at one end of the low-gear buffer slide bar away from the low-gear buffer fixed block. 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 bottom end of the low-gear buffer fixed block, and the low-gear buffer spring can give the moving rod a tendency to always move in a direction away from the low-gear buffer operating arm;

[0028] A ball head is provided at one end of the low-gear buffer sliding rod close to the low-gear buffer operating arm; when the moving rod moves downward until the push valve is in the low-gear position, the low-gear buffer operating arm contacts the ball head.

[0029] In some embodiments, the moving rod is placed at the top of the low-gear buffer slide rod. When the moving rod moves downward until the low-gear buffer slide rod just contacts the top of the low-gear buffer operating arm, the direct-push valve is in the low-gear position.

[0030] By adopting the above scheme, when the handle is rotated to the low gear position, the low gear buffer slide bar just contacts the low gear buffer operating arm, and at this time, the direct push valve is in the low gear state; when the handle continues to rotate to the ignition position, the low gear buffer operating arm will block the low gear buffer slide bar from moving downward, and the low gear buffer spring will be compressed, and at this time, the direct push valve is in the ignition state; and when the handle is in a position between the low gear position and the ignition position, after the force applied to the handle is removed, the rebound force of the low gear buffer spring will give the low gear buffer fixed block an upward movement force, thereby causing the moving rod to return to the low gear position, and the handle also returns 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 set 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.

[0031] In some embodiments, the direct push valve has a high-end state for the gas flow supplied to the gas fireplace; after the moving rod moves upward, the moving rod drives the push rod along the axis of the valve body away from the push rod, and the push rod is reset to a high-end position along the axis of the valve body in a direction away from the valve body. The direct push valve is in a high-end state for the gas flow supplied to the gas fireplace.

[0032] In some embodiments, a high-speed buffer positioning device is provided between the push rod and the fixed seat, and when the moving rod moves upward until the push valve is in a high-speed state, the high-speed buffer positioning device just contacts the fixed seat;

[0033] The high-end buffer positioning device includes a high-end buffer baffle clamped on one end of the push rod close to the push rod, a movable baffle 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, and the other end is against the movable baffle; when the movable rod moves upward and drives the push rod to move until the movable baffle contacts the fixed seat, the push valve is in the high-end position; and the high-end buffer spring can give the push rod a tendency to always move in the direction close to the push rod.

[0034] Specifically, the handle has a high-speed position and an off-speed position. When the handle is rotated to the high-speed position, the direct-push valve is in the high-speed state; when the handle is rotated to the off-speed position, the direct-push valve is in the off-speed state.

[0035] In some embodiments, a high-end buffer slot is provided on the end of the push rod close to the push rod, and the high-end buffer baffle is clamped in 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 the 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 and the end of the fixed seat close to the straight-push valve are against each other, the movable baffle is restricted, and the high-end buffer spring is compressed.

[0036] When the handle is rotated and drives the movable rod to move upward, the push rod will be driven to move along the axis of the valve body in the direction away from the push valve, until the handle reaches the high-grade position. At this time, the movable baffle just contacts the fixed seat, and the push valve is in the high-grade state. At this time, if the handle drives the movable rod to continue to move upward, since the fixed seat is fixed to the furnace body, the movable baffle is restricted on the fixed seat, and the high-grade buffer spring will be compressed. At this time, if the force applied to the handle is removed, the rebound force of the high-grade buffer spring will give the high-grade 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 handle back to the high-grade position, that is, the position of the handle when the movable baffle just contacts the fixed seat.

[0037] In some embodiments, the direct push valve includes

[0038] A valve body, wherein an air inlet cavity, a transition cavity and an air outlet cavity are sequentially connected thereto; and the valve body includes an air inlet communicating with the air inlet cavity and an air outlet communicating with the air outlet cavity;

[0039] a push rod, which is disposed in the air outlet cavity and can move linearly along the axial direction of the air outlet cavity;

[0040] an intermediate sealing body, which is sleeved on one end of the push rod close to the air inlet cavity;

[0041] a first return spring, which is sleeved on the push rod and located between the middle sealing body and the tail of the push rod, wherein the 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;

[0042] a solenoid valve disposed at one end of the valve body near the air inlet chamber, and comprising a valve core capable of linear motion along the axial direction of the air inlet chamber, and a sealing block connected to one end of the valve core near the air outlet chamber, wherein the sealing block is capable of separating the air inlet chamber from the transition chamber;

[0043] In which, 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-speed air path channel capable of connecting the transition chamber and the air outlet is provided in the valve body, and a low-speed adjustment rod is provided in the low-speed air path channel, and a flow gap is formed between the low-speed adjustment rod and the inner wall of the low-speed air path channel; the low-speed adjustment rod is movably provided in the low-speed air path channel to adjust the size of the flow gap.

[0044] Specifically, a first sealing ring is provided 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 respectively. There are two pathways to lead out the airflow, so a high fire state can be achieved.

[0045] 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.

[0046] 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.

[0047] In some embodiments, the low-gear air passage includes a low-gear air inlet passage communicating with the transition chamber and a low-gear air outlet passage communicating with the air outlet, wherein the low-gear air inlet passage and the low-gear air outlet passage intersect with each other; the low-gear air inlet passage or the low-gear air outlet passage extends axially to form a low-gear adjustment port, and the low-gear adjustment rod is disposed in the low-gear adjustment port and can move linearly along the axial direction of the low-gear adjustment port;

[0048] 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 the 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 the low-gear air intake passage or the low-gear air outlet passage, the size of the flow gap changes from large to small.

[0049] In some embodiments, the low-speed air inlet passage and the low-speed air outlet passage are perpendicular.

[0050] By adopting the above scheme, when the low-speed adjustment rod makes linear motion along the axial direction of the low-speed adjustment port, the size of the flow gap between the low-speed adjustment rod and the inner wall of the low-speed air path can be adjusted, thereby adjusting the flow rate flowing to the air outlet.

[0051] In some embodiments, a second sealing ring is provided between the low-gear adjustment rod and the low-gear adjustment port. The second sealing ring and the low-gear adjustment rod are in an interference fit, thereby achieving a seal between the second sealing ring and the low-gear adjustment port; the second sealing ring and the low-gear adjustment port are in an interference fit, thereby achieving a seal between the second sealing ring and the resisting adjustment rod, thereby ensuring a seal between the resisting adjustment rod and the low-gear adjustment port to prevent airflow leakage and provide high safety; the low-gear adjustment rod and the low-gear adjustment port are connected by a threaded connection;

[0052] One of the low-grade air inlet channel and the low-grade air outlet channel is extended along the axial direction to form the low-grade regulating port; the other one of the low-grade air inlet channel and the low-grade air outlet channel is extended along the axial direction to form a process hole, and a plug is fitted in the process hole.

[0053] In some embodiments, 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 move linearly along the axial direction of the low-gear adjustment port. The mating portion includes a cross slot, a slotted slot and other structures. A common screwdriver can be used to conveniently screw the low-gear adjustment rod in or out, 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.

[0054] 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, and the sealing is good.

[0055] With the above solution, the low-grade air passage 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 air passage.

[0056] In some embodiments, the valve body is further provided with a pilot flame air outlet communicating with the transition chamber.

[0057] In some embodiments, the head of the push rod is provided with a bevel, which serves as a guide to make the movement of the push rod 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 circular 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.

[0058] 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, during 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 between 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.

[0059] In some embodiments, the control system further comprises a pilot fire device and an ignition and shutoff control device;

[0060] The pilot fire device includes an ignition nozzle, an ignition needle and a thermocouple, the ignition nozzle is connected to the pilot fire outlet on the direct push valve, and the thermocouple is connected to the solenoid valve on the direct push valve;

[0061] The ignition and shutdown control device includes an ignition travel switch, an shutdown travel switch and an igniter, so the ignition travel switch is arranged at a position where the moving 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 moving 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.

[0062] In some embodiments, an ignition switch operating arm is provided on the push rod, and when the movable rod moves downward to the ignition position, the ignition switch operating arm can touch the ignition travel switch;

[0063] The top rod is provided with an ignition switch operating arm, and when the movable rod moves upward to the ignition-off position, the ignition-off switch operating arm can touch the ignition-off travel switch;

[0064] Furthermore, the ignition switch operating arm and the ignition off switch operating arm are the same component, and trigger the ignition travel switch or the ignition off travel switch respectively when the driving mechanism is in different states.

[0065] In some embodiments, the crank connecting rod and the handle portion of the handle have no obvious boundary, but are different parts of a whole.

[0066] In some embodiments, the handle is disposed on the left or right side of the front of the furnace body.

[0067] In some embodiments, the crank connecting rod and the handle can be disassembled without using tools; and the furnace body includes a decorative door in the front, and a handle groove is provided on the decorative door relative to the position of the crank connecting rod, and the crank connecting rod passes through the handle groove.

[0068] With the above solution, when the interior of the gas fireplace needs to be repaired and maintained, the decorative door needs to be removed. The detachable crank connecting rod and handle allow the operator to easily remove the handle and then remove the decorative door.

[0069] In some embodiments, the crank connecting rod has at least one bent portion, and the bent portion faces the outer side of the furnace body.

[0070] With the above solution, the curved portion is provided so that the handle portion is further away from the front area of ​​the gas fireplace, reducing the heat radiated by the gas fireplace flame, making the temperature of the handle lower when the gas fireplace is working, and more convenient for operation.

[0071] The working principle of this utility model:

[0072] The drive mechanism is actually composed of a crank slider mechanism and a double slider mechanism, which converts the rotational motion of the handle into the linear motion of the push rod. Because the push rod moves linearly, the axis of the push rod of the direct push valve is aligned with the direction of movement of the push rod. 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. This makes the operation of the direct push valve smoother and reduces wear on the push rod, thereby extending the service life of the direct push valve.

[0073] The handle is used to control the ignition, shutdown and high and low gear adjustment of the gas fireplace without the need for additional operating parts, which not only makes the appearance of the gas fireplace more concise and beautiful, but also simplifies the product structure and saves costs.

[0074] 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 adapt to the low-range flame size requirements of different products.

[0075] The low-range buffer positioning device and the high-range buffer positioning device enable the operating lever to automatically return to the low-range position or the high-range position, thereby enabling the user to easily set the gas fireplace to the low-range position or the high-range position.

[0076] Ignition: The user rotates the handle to move the moving rod downward, and the push rod moves toward the push valve until it pushes the push rod toward the direction close to the air inlet chamber, and pushes the sealing block to put the solenoid valve in the attracted 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 pilot flame air outlet, and the gas can enter the ignition nozzle of the pilot flame 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-speed buffer spring is in a compressed state under the action of the low-speed buffer operating arm;

[0077] Low gear: after the flame is ignited, the user can release the force applied to the handle, and the moving 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 rod 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. At this time, it is a low-gear flow state; and the thermocouple generates thermoelectric potential under the action of the flame, and the generated thermoelectric potential can maintain the solenoid valve in the attracted state;

[0078] High gear: In the low gear state, the user operates the handle to lift the moving 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 moving rod is continued to be lifted upward, under the action of the high-speed buffer spring, the resistance will increase significantly to remind the user that the moving rod is in the high gear position. Even if the user applies too much force and the moving rod slightly exceeds the high gear position, as long as the force applied to the handle is removed, the moving rod will also be in the high-speed buffer spring. The push rod returns to the high-speed position under the action of the rebound force; when moving from the low-speed position to the high-speed position, the push rod continues to move away from the air inlet chamber under the action of the first return spring, and the outer circumferential surface of the push rod close to the head is out of contact with the first sealing ring, and 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 diameter of this air path is larger than the diameter of the low-speed air path, forming a larger air flow to the air outlet, which is the high-speed flow state, and the flame of the gas fireplace is in a high-speed size state;

[0079] Turning off the flame: In the high-speed state, the user can continue to rotate the handle to lift the movable rod upward to overcome the force of the high-speed buffer 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 attracted 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 the closed state, thereby realizing the flame-off operation;

[0080] Reset: When the fire is turned off, when the force applied to the handle is removed, under the action of the high-speed buffer spring, the moving 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 the closed state, the gas fireplace is also in the closed state, that is, the gas fireplace is in the standby reset state.

[0081] (3) Beneficial effects

[0082] Compared with the existing technology, the utility model designs a control system for a gas fireplace.

[0083] (1) The utility model converts the rotary motion of the handle into the linear motion of the push rod through a driving mechanism; since the push rod moves linearly, the axis of the push rod of the direct-push valve is arranged to be consistent with the movement direction 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 does not cause wear on the push rod, thereby improving the service life of the direct-push valve;

[0084] (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 low-range flame size requirements of different products;

[0085] (3) The utility model is provided with a low-range buffer positioning device and a high-range buffer positioning device, so that the operating lever can automatically return to the low-range position or the high-range position, so that the user can easily set the gas fireplace in the low-range position or the high-range position, with a simple structure and convenient operation;

[0086] (4) The utility model can realize the control of the gas fireplace through the handle without designing additional operating parts. The ignition, shutoff and high and low gear adjustment of the gas fireplace can be conveniently controlled through the handle. The structure is simple and the appearance is neat. BRIEF DESCRIPTION OF THE DRAWINGS

[0087] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. 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 any creative work.

[0088] Figure 1 This is a schematic structural diagram of a control system for a gas fireplace according to Example 1 of the present utility model; Figure 2 This is a cross-sectional view of the structure of the direct push valve of Example 1 of the present utility model; Figure 3This is a schematic structural diagram of a gas fireplace control system in Example 1 of the present utility model with part of the outer shell removed from the furnace body; Figure 4 This is a first-angled plan view of a gas fireplace control system in Example 1 of the present utility model in an ignition state with a portion of the outer shell of the furnace body removed; Figure 5 This is a second-angled plan view of a gas fireplace control system in Example 1 of the present utility model in an ignition state with a portion of the outer shell of the furnace body removed; Figure 6 This is a cross-sectional view of the direct push valve in Example 1 of the present utility model in an ignition state; Figure 7 for Figure 6 A in the middle is an enlarged schematic diagram; Figure 8 This is a first-angled plan view of a gas fireplace control system in Example 1 of the present utility model in a low-gear state with a portion of the outer shell of the furnace body removed;

[0089] Figure 9 This is a second-angled plan view of a gas fireplace control system in Example 1 of the present invention when the furnace body is partially removed from the outer shell, when the furnace body is in a low-speed state; Figure 10 for Figure 9 Partial cross-sectional view at the middle BB; Figure 11 This is a cross-sectional view of the direct push valve in Example 1 of the present utility model in a low gear state; Figure 12 This is a first-angled plan view of a gas fireplace control system in a high-end state with a furnace body with a portion of the outer shell removed;

[0090] Figure 13 for Figure 12 Partial cross-sectional view at CC; Figure 14 This is a second-angled plan view of a gas fireplace control system in Example 1 of the present invention in a high-end state with a portion of the outer shell of the furnace body removed; Figure 15 This is a cross-sectional view of the direct push valve of Example 1 of the utility model in a high-speed state; Figure 16 This is a first-angled plan view of a gas fireplace control system in a closed state with a portion of the outer shell of the fireplace body removed; Figure 17 This is a second-angled plan view of a gas fireplace control system in a closed state with a portion of the outer shell of the fireplace body removed; Figure 18 This is a cross-sectional view of the direct push valve of Example 1 of the utility model in a closed state; Figure 19 This is an exploded schematic diagram of the handle of Example 1 of the present utility model; Figure 20 This is a schematic structural diagram of a control system for a gas fireplace according to Example 2 of the present utility model; Figure 21 This is a first-angled plan view of a gas fireplace control system in Example 2 of the present utility model, showing a furnace body with a portion of the outer shell removed, when the furnace body is in a low-speed state; Figure 22 This is a schematic structural diagram of a gas fireplace control system in Example 3 of the present utility model, with part of the outer shell of the furnace body removed when the furnace body is in a low-gear state.

[0091] The names of the components corresponding to the reference numerals in the figure are: 100, furnace body; 101, rotating shaft; 102, decorative door; 1021, handle groove; 200, 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 path; 2016a, low-grade air inlet channel; 2016b, low-grade air outlet channel; 2017, low-grade adjustment port; 2018, process hole; 2019, long-fire air outlet; 2 02, push rod; 2021, 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, mating portion; 208, flow gap; 209, second sealing ring; 210, plug; 300, drive mechanism; 301, handle; 3 011, handle; 3012, crank connecting rod; 3013, bending part; 302, first connecting rod; 303, moving rod; 3031, guide groove; 304, second connecting rod; 305, push rod; 3051, ignition switch operating arm; 3052, high-speed buffer slot; 3053, stop step; 3054, ignition switch operating arm; 306, guide column; 307, fixing seat; 3071, first through-hole; 400, low-speed buffer positioning device; 401, low-speed buffer fixing block; 4011, second through-hole; 402, low Gear buffer slide; 4021, stop block; 4022, low-speed buffer spring baffle; 4023, ball head; 403, low-speed buffer spring; 404, low-speed buffer operating arm; 500, high-speed buffer positioning device; 501, high-speed buffer baffle; 502, movable baffle; 503, high-speed buffer spring; 600, pilot 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

[0092] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0093] The following describes the technical solutions provided by various embodiments of the present application in conjunction with the accompanying drawings.

[0094] It should be noted that: Figure 4 and attached Figure 5 The structure of the control system of a gas fireplace of the present invention is shown in the ignition state. At this time, the handle 301 and the movable rod 303 are in the ignition position; Figure 6 The structure of the direct push valve 200 of the present invention is shown in the ignition state. At this time, the push rod 202 is in the ignition position; Figure 8 and attached Figure 9 The utility model shows a structure of a gas fireplace control system in a low gear state, at this time, the handle 301 and the moving rod 303 are in the low gear position; Figure 11 The structure of the direct push valve 200 of the present invention is shown in the low gear state. At this time, the push rod 202 is in the low gear position; Figure 12 and attached Figure 14 The utility model shows a structure of a gas fireplace control system in a high-end state, at this time, the handle 301 and the moving rod 303 are in the high-end position; Figure 15 The structure of the direct push valve 200 of the present invention is shown in the high-end state. At this time, the push rod 202 is in the high position. Figure 16 and attached Figure 17 The structure of the control system of a gas fireplace of the present invention is shown in the off state. At this time, the handle 301 and the movable rod 303 are in the off position. Figure 18 The structure of the direct-push valve 200 of the present invention is shown in the off-state, at which time the push rod 202 is in the off position.

[0095] Example 1

[0096] like Figures 1-19As shown, this embodiment provides a control system for a gas fireplace, comprising a furnace body 100; a direct-push valve 200, which is arranged at the bottom of the furnace body 100, and the direct-push valve 200 includes 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 furnace body 100, and the driving mechanism 300 can drive the push rod 202 to move linearly along the axis of the valve body 201; the driving mechanism 300 includes a handle 301 hingedly mounted on the furnace body 100 and rotatable, a moving rod 303 connected to the handle 301, and a top rod 305 connected to the moving rod 303; wherein, the A rotating shaft 101 is provided on the furnace body 100, and the handle 301 can rotate around the rotating shaft 101; the moving rod 303 is installed on the side of the furnace body 100 and can move linearly along the side surface of the furnace body 100; the push rod 305 can move linearly along the axis of the valve body 201; when the handle 301 rotates around the rotating shaft 101, it pushes the moving rod 303 to move and then pushes the push rod 305 to move linearly along the axis of the valve body 201. When the push rod 305 moves linearly along the axis of the valve body 201, it pushes the push rod 202 to move linearly along the axis of the valve body 201. In some embodiments, the handle 301 includes a handle 3011 and a crank connecting rod 3012, and the crank connecting rod 3012 is hinged to the furnace body 100; the driving mechanism 300 also includes a first connecting rod 302 hinged to the crank connecting rod 3012, and the end of the first connecting rod 302 away from the crank connecting rod 3012 is hinged to the moving rod 303; the other end of the moving rod 303 along its movement direction is hinged to a second connecting rod 304, and the end of the second connecting rod 304 away from the moving rod 303 is hinged to the top rod 305. In some embodiments, the connection between the first connecting rod 302 and the crank connecting rod 3012 is arranged on the side of the hinge between the crank connecting rod 3012 and the furnace body 100 away from the moving rod 303; after the crank connecting rod 3012 rotates downward, the end of the first connecting rod 302 hinged to the crank connecting rod 3012 also rotates downward, and the hinge between the first connecting rod 302 and the moving rod 303 is pushed downward; so that the downward rotation of the handle 301 can drive the moving rod 303 to move downward.With the above solution, after the crank connecting rod 3012 rotates downward, the end of the first connecting rod 302 hinged to the crank connecting rod 3012 also rotates downward, and the hinged portion of the first connecting rod 302 and the moving rod 303 is pushed downward. Since the moving rod 303 can move along the surface of the furnace body 100, the hinged portion of the moving rod 303 and the second connecting rod 304 is pushed downward. Since the top rod 305 is restricted from moving along the axial direction of the valve body 201, the second connecting rod 304 will push the valve body 201 downward. The push rod 305 is driven to move toward the push rod 202, thereby pushing the push rod 202 to move along the axis of the valve body 201 toward the valve body 201; similarly, after the handle 301 is rotated upward, the push rod 305 is driven to move along the axis of the valve body 201 away from the push rod 202 via the first connecting rod 302, the movable rod 303, and the second connecting rod 304, and disengage from the push rod 202, and the push rod 202 is reset under the action of the first return spring 204. In some embodiments, the movement direction of the push rod 305 and the movement direction of the movable rod 303 are perpendicular to each other, and the movement direction of the movable rod 303 is perpendicular to the rotation axis of the handle 301; and the movement direction of the push rod 305 and the movement direction of the movable rod 303 are in the same plane. In some embodiments, the movement direction of the push rod 305 is the same as the movement direction of the push rod 202 . Under the driving force of the handle 301 , the push rod 305 will push the push rod 202 of the direct push valve 200 to move toward the valve body 201 . By adopting the above scheme, a moving rod 303 is provided on the furnace body 100, and the moving rod 303 is restricted to linear motion on the surface of the furnace body 100; and, since the crank connecting rod 3012, the first connecting rod 302 and the moving rod 303 are all rotationally connected, the moving rod 303, the second connecting rod 304 and the top rod 305 are also rotationally connected; then a crank slider mechanism is formed between the furnace body 100, the crank connecting rod 3012, the first connecting rod 302 and the moving rod 303, and a double slider mechanism is formed between the furnace body 100, the moving rod 303, the second connecting rod 304 and the top rod 305, and the linear motion of the moving rod 303 is driven by the rotational motion of the handle 301, and the linear motion of the top rod 305 can be driven, that is, the movement of the handle 301 will be transmitted to the top rod 305.

[0097] In some embodiments, the drive mechanism 300 further includes a guide post 306 and a fixing seat 307 fixed to the furnace body 100. The guide post 306 is provided along the travel range of the movable rod 303, and the movable rod 303 is provided with a guide slot 3031 along its direction of movement that cooperates with the guide post 306. The fixing seat 307 is provided with a first through-hole 3071 along the axis of the valve body 201, and the push rod 305 is adapted to fit within the first through-hole 3071, and the push rod 305 is capable of linear motion along the first through-hole 3071. In some embodiments, the guide slots 3031 are provided at both the upper and lower ends of the movable rod 303, and the furnace body 100 is provided with two guide posts 306, each of which cooperates with the two guide slots 3031. This ensures smooth linear motion of the movable rod 303 and prevents deviation, thereby ensuring the stability of the movement of the drive mechanism 300 and the smooth linear motion of the push rod 305 and the push rod 202. By adopting the above scheme, the linear movement of the movable rod 303 on the furnace body 100 can be limited by the cooperation between the guide column 306 and the guide groove 3031; the linear movement of the push rod 305 on the furnace body 100 can be limited by the cooperation between the push rod 305 and the first through hole 3071.

[0098] In some embodiments, the direct-push valve 200 has a low-speed state for supplying gas to a gas fireplace; when the handle 301 is rotated, the handle 301 drives the push rod 305 along the axis of the valve body 201 to approach the push rod 202, and pushes the push rod 202 along the axis of the valve body 201 toward the valve body 201 to the low-speed position, and the direct-push valve 200 is in the low-speed state for supplying gas to the gas fireplace. In some embodiments, when the handle 301 is rotated in the opposite direction, the crank connecting rod 3012 drives the push rod 305 along the axis of the valve body 201 away from the push rod 202, and the push rod 202 returns to a high-speed state along the axis of the valve body 201 away from the valve body 201, and the direct-push valve 200 is in the high-speed state for supplying gas to the gas fireplace. With the above solution, the handle 301 can be rotated to realize two working states of the direct-push valve 200 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.

[0099] In some embodiments, a low-gear buffer positioning device 400 is disposed between the movable rod 303 and the furnace body 100. When the movable rod 303 moves downward until the push valve 200 is in the low-gear state, the movable rod 303 is in a position that just triggers the low-gear buffer positioning device 400 to begin operation. Specifically, the handle 301 and the movable rod 303 have a low-gear position and an ignition position. When the movable rod 303 moves to the low-gear position, the push valve 200 is in the low-gear state; when the movable rod 303 moves to the ignition position, the push valve 200 is in the ignition state. In some embodiments, as the movable rod 303 continues to move downward to the ignition position, the movable rod 303 can compress the low-gear buffer positioning device 400. Furthermore, when the handle 301 is in a position between the low-gear and ignition positions and the force applied to the handle 301 is removed, the movable rod 303 and the handle 301 can automatically return to the low-gear position under the action of the low-gear buffer positioning device 400.

[0100] In some embodiments, the low-gear buffer positioning device 400 includes a low-gear buffer fixed block 401, a low-gear buffer slide bar 402, a low-gear buffer spring 403, and a low-gear buffer operating arm 404; the low-gear buffer fixed block 401 is fixed relative to the moving rod 303; the low-gear buffer fixed block 401 is provided with a second through-hole 4011 along the movement direction of the moving rod 303; 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 low-gear buffer operating arm 404 is fixedly mounted on the furnace body 100 and is located below the low-gear buffer slide bar 402; and, the low-gear buffer slide bar 402 is provided with a spring that can engage with the low-gear buffer operating arm 404 at one end thereof The stop block 4021 is abutted against the top of the punching fixed block 401, and a low-gear buffer spring block 4022 is provided at one end of the low-gear buffer slide 402 away from the low-gear buffer fixed block 401. The low-gear buffer spring 403 is sleeved on the low-gear buffer slide 402, and one end is abutted against the low-gear buffer spring block 4022, and the other end is abutted against the bottom end of the low-gear buffer fixed block 401. The low-gear buffer spring 403 can give the moving rod 303 a tendency to always move in the direction away from the low-gear buffer operating arm 404; a ball head 4023 is provided at one end of the low-gear buffer slide 402 close to the low-gear buffer operating arm 404; when the moving rod 303 moves downward until the direct-push valve 200 is in the low-gear position, the low-gear buffer operating arm 404 contacts the ball head 4023. In some embodiments, the moving rod 303 is placed at the top of the low-gear buffer slide 402. When the moving rod 303 moves downward until the low-gear buffer slide 402 just contacts the top of the low-gear buffer operating arm 404, the direct-push valve 200 is in the low-gear position.With the above solution, when the handle 301 is rotated to the low-gear position, the low-gear buffer slide 402 is in contact with the low-gear buffer operating arm 404, and at this time, the direct-push valve 200 is in the low-gear state; when the handle 301 continues to be rotated to the ignition position, the low-gear buffer operating arm 404 will block the low-gear buffer slide 402 from moving downward, and the low-gear buffer spring 403 will be compressed. At this time, the direct-push valve 200 is in the ignition state; and when the handle 301 is in the low-gear position and the ignition position When the low-gear buffer slide 402 is in the position between the low-gear and low-gear positions, after the force applied to the handle 301 is removed, the rebound force of the low-gear buffer spring 403 will give the low-gear buffer fixed block 401 an upward movement force, thereby causing the moving rod 303 to return to the low-gear position, and the handle 301 also returns to the low-gear position; and since the end of the low-gear buffer slide 402 that contacts the low-gear buffer operating arm 404 is configured as a ball head 4023, the low-gear buffer slide 402 and the low-gear buffer operating arm 404 are in point contact, and the operation is smoother.

[0101] In some embodiments, the direct-push valve 200 has a high-speed state for supplying gas to a gas fireplace. After the movable rod 303 moves upward, the movable rod 303 drives the push rod 305 to move away from the push rod 202 along the axis of the valve body 201. When the push rod 202 returns to the high-speed position along the axis of the valve body 201 in a direction away from the valve body 201, the direct-push valve 200 is in the high-speed state for supplying gas to the gas fireplace. In some embodiments, a high-speed buffer positioning device 500 is provided between the push rod 305 and the fixed seat 307. When the movable rod 303 moves upward until the direct-push valve 200 is in the high-speed state, the high-speed buffer positioning device 500 just contacts the fixed seat 307. The high-speed buffer positioning device 500 includes a high-speed buffer baffle 501 that is clamped on the end of the push rod 305 close to the push rod 202, a movable baffle 502 that is sleeved on the end of the push rod 305 close to the fixed seat 307, A high-speed buffer spring 503 is sleeved on the push rod 305; one end of the high-speed buffer spring 503 abuts against the high-speed buffer baffle 501, and the other end abuts against the movable baffle 502; when the movable rod 303 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-speed position; and the high-speed buffer spring 503 can give the push rod 305 a tendency to always move toward the direction close to the push rod 202. Specifically, the handle 301 has a high-speed position and an off-fire position. When the handle 301 is rotated to the high-speed position, the direct-push valve 200 is in the high-speed state; when the handle 301 is rotated to the off-fire position, the direct-push valve 200 is in the off-fire state. In some embodiments, a high-end buffer slot 3052 is provided on the end of the push rod 305 close to the push rod 202, and the high-end buffer baffle 501 is clamped in 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 the end of the push rod 305 close to the fixed seat 307, and the movable baffle 502 is 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 and the end of the fixed seat 307 close to the direct push valve 200 are against each other, the movable baffle 502 is restricted, and the high-end buffer spring 503 is compressed.With the above solution, when the handle 301 rotates and drives the moving rod 303 to move upward, it drives the push rod 305 to move along the axis of the valve body 201 in the direction away from the push valve 200. When the handle 301 reaches the high-end position, the movable baffle 502 just contacts the fixed seat 307, and the push valve 200 is in the high-end state. At this time, if the handle 301 drives the moving rod 303 to continue to move upward, since the fixed seat 307 is fixed on the furnace body 100, the When the movable baffle 502 is restricted on the fixed seat 307, the high-end buffer spring 503 will be compressed. At this time, if the force applied to the handle 301 is removed, the rebound force of the high-end buffer spring 503 will give the high-end buffer baffle 501 a force, causing it to drive the push rod 305 to move in the direction close to the push rod 202, and the push rod 305 will drive the handle 301 to return to the high-end position, that is, the position of the handle 301 when the movable baffle 502 is just in contact with the fixed seat 307.

[0102] 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 provided 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 rod 202 is located on one end close to the air inlet chamber 2011; the first return spring 204 is arranged on the push rod 202 between the intermediate sealing body 203 and the tail of the push rod 202, and 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 the direction away from the air outlet chamber 2013; the electromagnetic valve 205 is arranged on 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 the 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 and 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 separate 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 provided in the valve body 201, and a low-speed adjustment rod 207 is provided 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 provided in the low-speed air path channel 2016 to adjust the size of the flow gap 208. Specifically, a first sealing ring 206 is disposed between the transition chamber 2012 and the outlet chamber 2013. The push rod 202 and the first sealing ring 206 cooperate to seal, allowing airflow entering the air inlet chamber 2011 to flow only through the low-speed air passage 2016 to the outlet 2015. Upon releasing the seal between the push rod 202 and the first sealing ring 206, airflow entering the air inlet chamber 2011 can flow through both the low-speed air passage 2016 and the outlet chamber 2013 to the outlet 2015. With two pathways for airflow, a high-fire state can be achieved. In some embodiments, a second return spring 2053 is disposed between the valve core 2051 and the sealing block 2052. This second return spring 2053 can provide the valve core 2051 with a tendency to consistently move toward the transition chamber 2012.By adopting the above-mentioned 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.

[0103] 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 move linearly 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 to each other. With this solution, when the low-speed adjustment rod 207 linearly moves 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.

[0104] In some embodiments, a second sealing ring 209 is provided between the low-speed adjustment rod 207 and the low-speed adjustment port 2017. The second sealing ring 209 and the low-speed adjustment rod 207 are interference fit, so that the second sealing ring 209 and the low-speed adjustment port 2017 can be sealed; the second sealing ring 209 and the low-speed adjustment port 2017 are interference fit, so that the second sealing ring 209 and the resisting adjustment rod can be sealed, thereby ensuring that the resisting adjustment rod and the low-speed adjustment rod are in a closed state. The seal between the regulating ports 2017 prevents airflow leakage and has high safety; the low-speed regulating rod 207 and the low-speed regulating port 2017 are connected by threaded connection; one of the low-speed air inlet channel 2016a and the low-speed air outlet channel 2016b extends axially 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 extends axially to form a process hole 2018, and a plug 210 is adapted in the process hole 2018. In some embodiments, the tail end of the low-speed adjustment rod 207 is provided with a mating portion 2074 that can cooperate with an external structure, so that the low-speed adjustment rod 207 can move linearly along the axial direction of the low-speed adjustment port 2017. The mating portion 2074 includes a cross slot, a slotted slot, or other structures. A common screwdriver can be used to easily screw the low-speed adjustment rod 207 in or out, thereby adjusting the size of the flow gap 208 formed between the low-speed adjustment rod 207 and the low-speed air passage 2016, which is easy to operate. In some embodiments, the plug 210 includes a steel ball. The plug 210 and the process hole 2018 are interference-fitted. After the plug 210 is assembled into the process hole 2018, the process hole 2018 can be sealed, thereby ensuring the sealing of the low-speed air passage 2016, with good sealing performance. Using the above solution, the low-grade air path channel 2016 is machined. Due to the manufacturing process, a process hole 2018 is usually formed. In order to block the process hole 2018, the process hole 2018 can be sealed by the plug 210 to ensure the sealing of the low-grade air path channel 2016.

[0105] In some embodiments, the valve body 201 is further provided with a pilot flame air outlet 2019 in communication with the transition chamber 2012. In some embodiments, the head of the push rod 202 is provided with a bevel 2021 to guide the movement of the push rod 202, particularly when the push rod 202 is fitted into the inner hole of the first sealing ring 206, the bevel 2021 enables 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 circular shaft structure, and a notch 2022 is provided at one end of the tail of the push rod 202 close to the intermediate 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, during 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.

[0106] In some embodiments, the control system further includes a pilot fire device 600 and an ignition and ignition shutoff control device 700; the pilot 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 air outlet 2019 on the direct push valve 200, and the thermocouple 603 is connected to the solenoid valve 205 on the direct push valve 200; the ignition and ignition shutoff control device 700 includes an ignition travel switch 701, a fire shutoff travel switch 702 and an igniter 703, so the ignition travel switch 701 is arranged on the The moving rod 303 moves downward to the ignition position and the driving mechanism 300 can touch the position of the ignition limit switch 701. The ignition limit switch 702 is set at the position where the moving rod 303 moves upward to the ignition position and the driving mechanism 300 can touch the ignition limit switch 702; the igniter 703 is connected to the ignition needle 602, the ignition limit switch 701 is connected in series with the igniter 703 and the ignition needle 602, and the ignition limit 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 movable rod 303 moves downward to the ignition position, the ignition switch operating arm 3051 can touch the ignition travel switch 701; an ignition switch operating arm 3054 is provided on the top rod 305, and when the movable rod 303 moves upward to the ignition-off position, the ignition-off switch operating arm 3054 can touch the ignition-off travel switch 702; and the ignition switch operating arm 3051 and the ignition-off switch operating arm 3054 are the same component, and when the driving mechanism 300 is in different states, they trigger the ignition travel switch 701 or the ignition-off travel switch 702 respectively.

[0107] In some embodiments, the crank connecting rod 3012 and the handle 3011 of the handle 301 are removable without tools. Furthermore, the furnace body 100 includes a front decorative door 102. A handle slot 1021 is provided on the decorative door 102 relative to the crank connecting rod 3012, through which the crank connecting rod 3012 passes. With this arrangement, when the interior of the gas fireplace requires maintenance, the decorative door 102 needs to be removed. The removable crank connecting rod 3012 and handle 3011 allow the operator to easily remove the handle 3011 and then the decorative door 102.

[0108] The working principle of this utility model:

[0109] The drive mechanism 300 is actually composed of a crank slider mechanism and a double slider mechanism, which converts the rotational motion of the handle 301 into the linear motion of the push rod 305. Since the push rod 305 moves linearly, the axis of the push rod 202 of the direct-push valve 200 is aligned with the movement direction of the push rod 305. When the push rod 305 pushes the push rod 202, it pushes the push rod 202 horizontally. 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 does not cause wear on the push rod 202, thereby increasing the service life of the direct-push valve 200.

[0110] The handle 301 is used to control the ignition, shutdown and high and low gear adjustment of the gas fireplace without the need for additional operating parts, which not only makes the appearance of the gas fireplace more concise and beautiful, but also simplifies the product structure and saves costs.

[0111] The direct push valve 200 is a direct push valve 200 with an adjustable low-grade flow channel, which not only conveniently realizes high-grade and low-grade gas supply states, but also can adjust the low-grade flow size to adapt to the low-grade flame size requirements of different products.

[0112] The low-range buffer positioning device 400 and the high-range buffer positioning device 500 enable the operating lever to automatically return to the low-range position or the high-range position, thereby enabling the user to easily set the gas fireplace to the low-range position or the high-range position.

[0113] Ignition: The user rotates the handle 301 to move the moving rod 303 downward, and the push rod 305 moves toward the direction of the direct-push valve 200 until it pushes the push rod 202 to move toward the direction close to the air inlet chamber 2011, and pushes the sealing block 2052 to put the solenoid valve 205 in the attracted 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 to the pilot flame outlet 2019, and the gas can enter the ignition nozzle 601 of the pilot flame device 600 through the air inlet chamber 2011 of the direct-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-speed buffer spring 403 is in a compressed state under the action of the low-speed buffer operating arm 404;

[0114] Low gear: After the flame is ignited, the user can release the force applied to the handle 301, and the moving rod 303 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, and the low-gear buffer slide The rod 402 and the low-speed buffer operating arm 404 are just at the critical point of separation. At this time, the outer circumferential surface of the push rod 202 near the head is in a sealed state with the first sealing ring 206. 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 air passage 2016 to be burned by the gas fireplace burner. At this time, it is in a low-speed flow state. The thermocouple 603 generates a thermoelectric potential under the action of the flame. The generated thermoelectric potential can maintain the solenoid valve 205 in the attracted state.

[0115] High gear: In the low gear state, the user operates the handle 301 to lift the moving rod 303 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 moving rod 303 is continued to be lifted upward, under the action of the high-speed buffer spring 503, the resistance will increase significantly, thereby reminding the user that the moving rod 303 is in the high gear position. Even if the user applies too much force and the moving rod 303 slightly exceeds the high gear position, as long as the force applied to the handle 301 is removed, the moving rod 303 will also rebound under the high-speed buffer spring 503. 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. The outer circumferential surface of the push rod 202 near the head is out of contact with the first sealing ring 206. The transition chamber 2012 is connected with the air outlet chamber 2013. The gas in the transition chamber 2012 can enter the air outlet 2015 through the air outlet chamber 2013. The diameter of this air path is larger than the diameter of the low-gear air path 2016, forming a larger air flow to the air outlet 2015, which is a high-gear flow state. The flame of the gas fireplace is in a high-gear size state.

[0116] Turning off the flame: In the high-speed state, the user can continue to rotate the handle 301 to lift the movable rod 303 upward to overcome the force of the high-speed buffer spring 503 until the flame is turned off. At this time, the flame-off switch operating arm 3054 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 attracted 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 the closed state, thereby realizing the flame-off operation;

[0117] Reset: When the fire is turned off, when the force applied to the handle 301 is removed, under the action of the high-speed buffer spring 503, the moving rod 303 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 the closed state, the gas fireplace is also in the closed state, that is, the gas fireplace is in the standby reset state.

[0118] Example 2

[0119] like Figure 20-21 As shown, the difference between this embodiment and the above-mentioned embodiment 1 is that:

[0120] In this embodiment, the connection between the first connecting rod 302 and the crank connecting rod 3012 is relatively arranged on the side of the hinge between the crank connecting rod 3012 and the furnace body 100 close to the moving rod 303; after the crank connecting rod 3012 rotates upward, the end of the first connecting rod 302 hinged to the crank connecting rod 3012 rotates downward, and the hinge between the first connecting rod 302 and the moving rod 303 is pushed to move downward; so that the upward rotation of the handle 301 can drive the moving rod 303 to move downward. With the above solution, after the crank connecting rod 3012 rotates upward, the hinged end of the first connecting rod 302 and the crank connecting rod 3012 rotates downward, and the hinged portion of the first connecting rod 302 and the moving rod 303 is pushed downward. Since the moving rod 303 can move along the surface of the furnace body 100, the hinged portion of the moving rod 303 and the second connecting rod 304 is pushed downward. Since the top rod 305 is restricted from moving along the axis of the valve body 201, the second connecting rod 304 will push The push rod 305 moves in the direction approaching the push rod 202, thereby pushing the push rod 202 to move along the axis of the valve body 201 towards the valve body 201; similarly, after the handle 301 is rotated downward, the push rod 305 will be driven by the first connecting rod 302, the moving rod 303 and the second connecting rod 304 to move along the axis 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 return spring 204.

[0121] In this embodiment, the movable rod 303 is not completely vertical, but is tilted at a certain angle; and the crank connecting rod 3012 is not a flat shape, but has a curved portion 3013, and the curved portion 3013 is curved toward the outer side of the furnace body 100; through the setting of the curved portion 3013, the handle 3011 is further away from the front area of ​​the gas fireplace, reducing the heat radiated by the gas fireplace flame, so that the temperature of the handle 301 is lower when the gas fireplace is working, which is more convenient for operation.

[0122] Example 3

[0123] like Figure 22 As shown, the difference between this embodiment and the above-mentioned embodiment 1 and embodiment 2 is that:

[0124] In this embodiment, the crank connecting rod 3012 and the handle 3011 of the handle 301 have no obvious boundary, but are different parts of a whole, and the handle 301 is arranged on the right side of the front of the furnace body 100.

[0125] The same or similar parts between the various embodiments in this specification can be referred to each other, and each embodiment focuses on the differences from other embodiments.

[0126] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A gas fireplace control system, characterized by: include Furnace body (100); A direct push valve (200) is provided at the bottom of the furnace body (100), and the direct push valve (200) comprises a valve body (201) and a push rod (202) provided along the axis of the valve body (201); a driving mechanism (300) disposed on the furnace body (100), wherein 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 a handle (301) hingedly mounted on the furnace body (100) and rotatable, a moving rod (303) connected to the handle (301), and a top rod (305) connected to the moving rod (303); wherein a rotating shaft (101) is provided on the furnace body (100), and the handle (301) can rotate around the rotating shaft (101); the moving rod (303) is mounted on the side of the furnace body (100) and can be moved along the side of the furnace body (100). The surface of the valve body (201) performs linear motion; the push rod (305) can perform linear motion along the axis of the valve body (201); when the handle (301) rotates around the rotating shaft (101), it pushes the moving rod (303) to move and further 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 push rod (305) and the movement direction of the moving rod (303) are perpendicular to each other, and the movement direction of the moving rod (303) and the rotation axis of the handle (301) are perpendicular to each other; and the movement direction of the push rod (305) and the movement direction of the moving rod (303) are in the same plane.

3. The gas fireplace control system according to claim 1, characterized in that: The handle (301) includes a handle (3011) and a crank connecting rod (3012), and the crank connecting rod (3012) is hinged to the furnace body (100); the driving mechanism (300) also includes a first connecting rod (302) hinged to the crank connecting rod (3012), and the end of the first connecting rod (302) away from the crank connecting rod (3012) is hinged to the moving rod (303); the other end of the moving rod (303) along its movement direction is hinged to a second connecting rod (304), and the end of the second connecting rod (304) away from the moving rod (303) is hinged to the push rod (305).

4. The gas fireplace control system according to claim 3, characterized in that: The connection between the first connecting rod (302) and the crank connecting rod (3012) is arranged on the side of the hinge between the crank connecting rod (3012) and the furnace body (100) away from the moving rod (303); after the crank connecting rod (3012) rotates downward, the end of the first connecting rod (302) hinged to the crank connecting rod (3012) also rotates downward, and the hinge between the first connecting rod (302) and the moving rod (303) is pushed to move downward; so that the downward rotation of the handle (301) can drive the moving rod (303) to move downward.

5. The gas fireplace control system according to claim 3, characterized in that: The connection between the first connecting rod (302) and the crank connecting rod (3012) is arranged relatively to the side of the hinge between the crank connecting rod (3012) and the furnace body (100) close to the moving rod (303); after the crank connecting rod (3012) rotates upward, the end of the first connecting rod (302) hinged to the crank connecting rod (3012) rotates downward, and the hinge between the first connecting rod (302) and the moving rod (303) is pushed to move downward; so that the upward rotation of the handle (301) can drive the moving rod (303) to move downward.

6. The gas fireplace control system according to claim 1, characterized in that: The driving mechanism (300) further includes a guide column (306) and a fixed seat (307) fixedly arranged on the furnace body (100); the guide column (306) is arranged on the movement stroke of the movable rod (303), and the movable rod (303) is provided with a guide groove (3031) that cooperates with the guide column (306) along its movement direction; the fixed 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).

7. The gas fireplace control system 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 handle (301) is rotated, the handle (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 the low-gear position, and the direct push valve (200) is in a low-gear state for the gas flow supplied to the gas fireplace.

8. The gas fireplace control system according to claim 7, characterized in that: A low-gear buffer positioning device (400) is provided between the moving rod (303) and the furnace body (100); when the moving rod (303) moves downward until the push valve (200) is in a low-gear state, the moving rod (303) is just in a position that triggers the low-gear buffer positioning device (400) to start working; The low-speed buffer positioning device (400) comprises a low-speed buffer fixed block (401), a low-speed buffer slide bar (402), a low-speed buffer spring (403), and a low-speed buffer operating arm (404); the low-speed buffer fixed block (401) is fixedly arranged relative to the moving rod (303); the low-speed buffer fixed block (401) is provided with a second through-hole (4011) along the moving direction of the moving rod (303); the low-speed buffer slide bar (402) is adapted in the second through-hole (4011), and the low-speed buffer slide bar (402) can perform linear motion along the second through-hole (4011); the low-speed buffer operating arm (404) is fixedly mounted on the furnace body (100) and is located between the low-speed buffer slide bar (402) and the low-speed buffer operating arm (404). and, one end of the low-gear buffer slide bar (402) away from the low-gear buffer operating arm (404) is provided with a stop block (4021) capable of abutting against the top end of the low-gear buffer fixed block (401); one end of the low-gear buffer slide bar (402) away from the low-gear buffer fixed block (401) is provided with a low-gear buffer spring stopper (4022); 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 stopper (4022), and the other end abuts against the bottom end of the low-gear buffer fixed block (401); the low-gear buffer spring (403) can give the moving rod (303) a tendency to always move in a direction away from the low-gear buffer operating arm (404); A ball head (4023) is provided at one end of the low-gear buffer sliding rod (402) close to the low-gear buffer operating arm (404); when the moving rod (303) moves downward until the push valve (200) is in the low-gear position, the low-gear buffer operating arm (404) contacts the ball head (4023).

9. The gas fireplace control system according to claim 6, characterized in that: The direct push valve (200) has a high-end state for the gas flow supplied to the gas fireplace; after the moving rod (303) moves upward, the moving rod (303) drives the push rod (305) along the axis of the valve body (201) away from the push rod (202), and the push rod (202) is reset to the high-end position along the axis of the valve body (201) in a direction away from the valve body (201). The direct push valve (200) is in a high-end state for the gas flow supplied to the gas fireplace.

10. The gas fireplace control system according to claim 9, characterized in that: A high-speed buffer positioning device (500) is provided between the push rod (305) and the fixed seat (307); when the moving rod (303) moves upward until the push valve (200) is in a high-speed state, the high-speed buffer positioning device (500) just contacts the fixed seat (307); 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 movable rod (303) 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 direct push valve (200) comprises A valve body (201) is provided with an air inlet cavity (2011), a transition cavity (2012), and an air outlet cavity (2013) connected in sequence therein; and the valve body (201) includes 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 move linearly along the axial direction of the air outlet cavity (2013); an intermediate sealing body (203) 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), wherein 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 cavity (2013); a solenoid valve (205) disposed at one end of the valve body (201) close to the air inlet cavity (2011), and comprising a valve core (2051) capable of linear motion along the axial direction of the air inlet cavity (2011), and a sealing block (2052) connected to one end of the valve core (2051) close to the air outlet cavity (2013), wherein the sealing block (2052) is capable of separating the air inlet cavity (2011) from the transition cavity (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) can separate the transition chamber (2012) and the air outlet chamber (2013); the valve body (201) is provided with a low-speed air passage (2016) capable of connecting the transition chamber (2012) and the air outlet (2015); the low-speed air passage (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 passage (2016); the low-speed adjustment rod (207) is movably provided in the low-speed air passage (2016) to adjust the size of the flow gap (208).

12. The gas fireplace control system according to claim 11, characterized in that: The low-speed air passage (2016) comprises a low-speed air inlet passage (2016a) in communication with the transition chamber (2012), and a low-speed air outlet passage (2016b) in communication with the air outlet (2015), wherein the low-speed air inlet passage (2016a) and the low-speed air outlet passage (2016b) intersect with each other; the low-speed air inlet passage (2016a) or the low-speed air outlet passage (2016b) extends axially to form a low-speed adjustment port (2017); the low-speed adjustment rod (207) is disposed in the low-speed adjustment port (2017) and can perform linear motion along the axial direction of the low-speed adjustment port (2017); The low-speed adjustment rod (207) comprises a first shaft portion (2071) and a second shaft portion (2072) connected in sequence along the axial direction of the low-speed 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 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-speed air intake passage (2016a) or the low-speed air outlet passage (2016b); and the flow gap (208) is formed between the transition shaft portion (2073) and the inner wall of the low-speed 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-speed adjustment rod (207) moves along the axial direction of the low-speed adjustment port (2017) toward a 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 a direction close to 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.

13. The gas fireplace control system according to claim 12, characterized in that: A second sealing ring (209) is provided between the low-speed adjustment rod (207) and the low-speed adjustment port (2017); an interference fit is formed between the second sealing ring (209) and the low-speed adjustment rod (207); and an interference fit is formed between the second sealing ring (209) and the low-speed adjustment port (2017); the low-speed adjustment rod (207) and the low-speed adjustment port (2017) are connected by a threaded connection; 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).

14. The gas fireplace control system according to claim 1, characterized in that: The control system further comprises a pilot fire device (600) and an ignition and shutoff control device (700); The pilot fire device (600) comprises an ignition nozzle (601), an ignition needle (602) and a thermocouple (603), wherein the ignition nozzle (601) is connected to the long-fire air outlet (2019) on the direct-push valve (200), and the thermocouple (603) is connected to the electromagnetic valve (205) on the direct-push valve (200); The ignition and ignition control device (700) comprises an ignition travel switch (701), an ignition extinguishing travel switch (702) and an igniter (703), so that the ignition travel switch (701) is arranged at a position where the moving rod (303) moves downward to the ignition position and the driving mechanism (300) can touch the ignition travel switch (701), and the ignition extinguishing travel switch (702) is arranged at a position where the moving rod (303) moves upward to the ignition extinguishing position and the driving mechanism (300) can touch the ignition extinguishing 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 extinguishing travel switch (702) is connected in series with the solenoid valve (205) and the thermocouple (603); An ignition switch operating arm (3051) is provided on the push rod (305), and when the moving rod (303) moves downward to the ignition position, the ignition switch operating arm (3051) can touch the ignition travel switch (701); The top rod (305) is provided with a fire switch operating arm (3054). When the movable rod (303) moves upward to the fire-off position, the fire-off switch operating arm (3054) can touch the fire-off travel switch (702).

15. The gas fireplace control system according to claim 14, characterized in that: The ignition switch operating arm (3051) and the ignition off switch operating arm (3054) are the same component, and trigger the ignition travel switch (701) or the ignition off travel switch (702) respectively when the driving mechanism (300) is in different states.

16. The gas fireplace control system according to claim 3, characterized in that: The crank connecting rod (3012) and the handle (3011) of the handle (301) can be disassembled without using tools; and the furnace body (100) includes a front decorative door (102), and a handle groove (1021) is provided on the decorative door (102) at a position relative to the crank connecting rod (3012), and the crank connecting rod (3012) passes through the handle groove (1021).

17. The gas fireplace control system according to claim 3, characterized in that: The crank connecting rod (3012) has at least one bent portion (3013), and the bent portion (3013) faces the outer side surface of the furnace body (100).

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