CN213685397U - Stop valve structure, gas proportional valve and gas hot water equipment - Google Patents

Abstract

The utility model relates to a stop valve structure, gas proportional valve and gas hot water system add the third valve port in first valve body, form extra branch road airflow channel. At the time of ignition, the third port is opened by the third control assembly, replacing the first port or the second port, so that the gas flow flows into the third port. Due to the opening area S of the third valve port₃Is smaller than the opening area S of the first valve port₁Or the opening area S of the second valve port₂Therefore, the gas flow entering the third valve port is not large, and the gas content in the combustion chamber during ignition is effectively controlledAnd the phenomenon of deflagration or detonation of the fuel gas is avoided. So, a branch road airflow channel is built-in this application, changes the interim runner of air current in first valve body to control air current gets into the gas content in the combustion chamber, makes the ignition can not arouse deflagration or rumble in the twinkling of an eye, effectively solves the problem that water heater or water heater have the potential safety hazard, thereby is favorable to promoting hot-water apparatus's user and uses experience.

Description

Stop valve structure, gas proportional valve and gas hot water equipment

Technical Field

The utility model relates to a proportional valve technical field especially relates to stop valve structure, gas proportional valve and gas hot water system.

Background

The proportional valve mainly comprises a stop valve part and a proportional control valve part, wherein the stop valve part comprises two groups of electromagnetic valve structures, and in the working process, fuel gas enters the proportional control valve after passing through two electromagnetic valves. In order to ensure the minimum secondary pressure of the fuel gas outlet, a certain opening degree is arranged between the valve core and the valve port of the proportional control valve. At the moment of ignition, after the electromagnetic valve and the proportional control valve are electrified and opened, because the stress of the diaphragm has hysteresis, the valve of the proportional control valve has no time to react, and a large amount of fuel gas quickly flows out of the proportional valve and enters the combustion chamber. If the gas content exceeds a gas detonation critical point, detonation can be caused, so that potential safety hazards exist in the water heater or the water heater, and the user experience of the water heating equipment is poor.

SUMMERY OF THE UTILITY MODEL

The utility model provides a first technical problem provide a stop valve structure, its gas content that can effective control get into in the combustion chamber when the ignition avoids the emergence of gas deflagration or the phenomenon of rumbling, improves the performance of product.

The utility model provides a second technical problem provide a gas proportional valve, its gas content that can effective control get into in the combustion chamber when the ignition avoids the emergence of gas deflagration or the phenomenon of rumbling, improves the performance of product.

The utility model provides a third technical problem provide a gas hot water equipment, its gas content that can effective control get into in the combustion chamber when the ignition avoids the emergence of gas deflagration or the phenomenon of rumbling, improves the performance of product.

The first technical problem is solved by the following technical scheme:

a shutoff valve structure, comprising: the valve comprises a first valve body, wherein an air inlet channel, a first circulation cavity and a first air outlet channel are arranged in the first valve body, and the first valve body is provided with an air inlet channel, a first circulation cavity and a first air outlet channelThe circulation cavity is communicated with the air inlet channel through a first valve port, the first circulation cavity is communicated with the first air outlet channel through a second valve port, the first circulation cavity is communicated with the air inlet channel or the first air outlet channel through a third valve port, and when the third valve port is communicated with the air inlet channel, the opening area S of the third valve port is₃Is smaller than the opening area S of the first valve port₁(ii) a When the third valve port is communicated with the first air outlet channel, the opening area S of the third valve port₃Is smaller than the opening area S of the second valve port₂The first valve body is provided with a first opening opposite to the first valve port, a second opening opposite to the second valve port and a third opening opposite to the third valve port at intervals, and the first air outlet channel is used for being communicated with a second circulation cavity in the regulating valve structure; the first control assembly, the second control assembly and the third control assembly are arranged on the first valve body at intervals, the control end of the first control assembly penetrates through the first opening to control the opening and closing of the first valve port, the control end of the second control assembly penetrates through the second opening to control the opening and closing of the second valve port, and the control end of the third control assembly penetrates through the third opening to control the opening and closing of the third valve port.

Stop valve structure, compare produced beneficial effect with the background art: and a third valve port is additionally arranged in the first valve body to form an additional branch airflow channel. When the third valve port is communicated between the first flow-through cavity and the first air outlet channel, the second control component closes the second valve port during ignition, and the first control component and the third control component respectively open the first valve port and the third valve port correspondingly, so that air flows through the air inlet channel, the first valve port, the first flow-through cavity, the third valve port and the first air outlet channel in sequence. Due to the opening area S of the third valve port₃Is smaller than the opening area S of the second valve port₂Therefore, the gas flow entering the first gas outlet channel is small, the content of the gas in the combustion chamber during ignition is effectively controlled, and the phenomenon of deflagration or roar of the gas is avoided; is ignited intoAfter the work, the second valve port is opened, and the third valve port is closed. When the third valve port is communicated between the air inlet channel and the first circulation cavity, the first control component closes the first valve port during ignition, and the second control component and the third control component respectively open the second valve port and the third valve port correspondingly, so that air flow sequentially flows through the air inlet channel, the third valve port, the first circulation cavity, the second valve port and the first air outlet channel. Due to the opening area S of the third valve port₃Is smaller than the opening area S of the first valve port₁Therefore, the gas flow entering the first flow cavity is small, the content of the gas in the combustion chamber during ignition is effectively controlled, and the phenomenon of deflagration or detonation of the gas is avoided; after the ignition is successful, the first valve port is opened, and the third valve port is closed. Therefore, a branch airflow channel is arranged in the water heater, a temporary flow channel of airflow in the first valve body is changed, the gas content of the airflow in the combustion chamber is controlled, detonation or roaring cannot be caused in the moment of ignition, the problem that potential safety hazards exist in a water heater or a water heater is effectively solved, and the use experience of a user of the water heating equipment is facilitated to be improved.

In one embodiment, the first circulation cavity is communicated with the air inlet channel or the first air outlet channel through a circulation pipe, and one port of the circulation pipe is the third valve port.

In one embodiment, the flow pipe is located in the first flow-through cavity, one end of the flow pipe, which is far away from the third valve port, is communicated with the first air outlet channel, and the opening area S of the third valve port₃Is smaller than the opening area S of the second valve port₂。

In one embodiment, an inner wall of the first air outlet channel, which is close to the flow pipe, is recessed towards the first flow cavity, and a buffer groove is formed.

In one embodiment, the third port is located between the first port and the second port.

In one embodiment, the first valve body includes a valve main body and an end cover mounted on the valve main body, the first flow-through cavity is formed between the end cover and the valve main body, the air inlet channel and the first air outlet channel are both disposed on the valve main body, and the third opening and the third control assembly are both disposed on the end cover.

In one embodiment, the third control assembly comprises a housing, a power member and a sliding member, the housing is mounted on the first valve body, the power member is mounted in the housing, the sliding member is in driving fit with the power member, and one end of the sliding member can block the third valve port through the third opening.

In one embodiment, the shut-off valve arrangement further comprises a first seal disposed between the first valve body and the housing.

In one embodiment, the third control assembly further includes a first reset member disposed between the slider and the housing, the first reset member being configured to push the slider out of the housing.

In one embodiment, the first control assembly includes a first bracket, a first coil, and a first valve rod, the first bracket is mounted on the first valve body, the first coil is mounted on the first bracket, the first valve rod is sleeved in the first coil, and one end of the first valve rod can be blocked at the first valve port through a first opening.

In one embodiment, the second control assembly includes a second bracket mounted on the first valve body, a second coil mounted on the second bracket, and a second valve stem sleeved in the second coil, and one end of the second valve stem can be blocked at the second valve port through a second opening.

The second technical problem is solved by the following technical solutions:

a gas proportional valve comprises a joint, a regulating valve structure and a stop valve structure, wherein the stop valve structure comprises a second valve body and a fourth control assembly, a second circulation cavity is arranged in the second valve body, the first valve body is connected with the second valve body, a first gas outlet channel is communicated with the second circulation cavity, a fourth valve port and a fourth opening are arranged on the second valve body at intervals, a second gas outlet channel is arranged in the joint and communicated with the second circulation cavity through the fourth valve port, and the fourth control assembly controls the opening degree of the fourth valve port through the fourth opening.

Gas proportional valve, compare produced beneficial effect with the background art: by adopting the stop valve structure, the third valve port is additionally arranged in the first valve body to form an additional branch airflow channel. When the third valve port is communicated between the first flow-through cavity and the first air outlet channel, the second control component closes the second valve port during ignition, and the first control component and the third control component respectively open the first valve port and the third valve port correspondingly, so that air flows through the air inlet channel, the first valve port, the first flow-through cavity, the third valve port and the first air outlet channel in sequence. Due to the opening area S of the third valve port₃Is smaller than the opening area S of the second valve port₂Therefore, the gas flow entering the first gas outlet channel is small, the content of the gas in the combustion chamber during ignition is effectively controlled, and the phenomenon of deflagration or roar of the gas is avoided; after the ignition is successful, the second valve port is opened, and the third valve port is closed. When the third valve port is communicated between the air inlet channel and the first circulation cavity, the first control component closes the first valve port during ignition, and the second control component and the third control component respectively open the second valve port and the third valve port correspondingly, so that air flow sequentially flows through the air inlet channel, the third valve port, the first circulation cavity, the second valve port and the first air outlet channel. Due to the opening area S of the third valve port₃Is smaller than the opening area S of the first valve port₁Therefore, the gas flow entering the first flow cavity is small, the content of the gas in the combustion chamber during ignition is effectively controlled, and the phenomenon of deflagration or detonation of the gas is avoided; after the ignition is successful, the first valve port is opened, and the third valve port is closed. Therefore, a branch airflow channel is arranged in the valve body, a temporary flow channel of airflow in the first valve body is changed, and the content of fuel gas entering the combustion chamber is controlled, so that ignition cannot be initiated instantaneouslyThe flame or the roar effectively solves the problem of potential safety hazard of the water heater or the water heater, thereby being beneficial to improving the user experience of the hot water equipment.

A gas water heating device comprises the gas proportional valve.

Gas hot water equipment, compare produced beneficial effect with the background art: by adopting the stop valve structure, the third valve port is additionally arranged in the first valve body to form an additional branch airflow channel. When the third valve port is communicated between the first flow-through cavity and the first air outlet channel, the second control component closes the second valve port during ignition, and the first control component and the third control component respectively open the first valve port and the third valve port correspondingly, so that air flows through the air inlet channel, the first valve port, the first flow-through cavity, the third valve port and the first air outlet channel in sequence. Due to the opening area S of the third valve port₃Is smaller than the opening area S of the second valve port₂Therefore, the gas flow entering the first gas outlet channel is small, the content of the gas in the combustion chamber during ignition is effectively controlled, and the phenomenon of deflagration or roar of the gas is avoided; after the ignition is successful, the second valve port is opened, and the third valve port is closed. When the third valve port is communicated between the air inlet channel and the first circulation cavity, the first control component closes the first valve port during ignition, and the second control component and the third control component respectively open the second valve port and the third valve port correspondingly, so that air flow sequentially flows through the air inlet channel, the third valve port, the first circulation cavity, the second valve port and the first air outlet channel. Due to the opening area S of the third valve port₃Is smaller than the opening area S of the first valve port₁Therefore, the gas flow entering the first flow cavity is small, the content of the gas in the combustion chamber during ignition is effectively controlled, and the phenomenon of deflagration or detonation of the gas is avoided; after the ignition is successful, the first valve port is opened, and the third valve port is closed. Therefore, a branch airflow channel is arranged in the valve body, a temporary flow channel of airflow in the first valve body is changed, the content of gas in the combustion chamber is controlled, detonation or roaring cannot be caused in the moment of ignition, the problem that potential safety hazards exist in a water heater or a water heater is effectively solved, and hot water is favorably promoted to be arrangedThe user experience of the standby.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic view of a gas proportional valve according to an embodiment;

FIG. 2 is an exploded view of the gas proportional valve structure according to an embodiment;

FIG. 3 is a sectional view of the structure of the gas proportional valve with the third valve opening open according to one embodiment;

FIG. 4 is a sectional view of the gas proportional valve with the third port closed according to one embodiment;

FIG. 5 is a schematic view of a gas proportional valve with an open end cover according to an embodiment.

Reference numerals:

100. a gas proportional valve; 110. a stop valve arrangement; 111. a first valve body; 1111. a valve body; 11111. a second seal member; 11112. a first mounting groove; 1112. an end cap; 1113. a base; 1114. a second mounting groove; 1115. a first seal member; 1116. a first opening; 1117. a second opening; 1118. a third opening; 112. a first control assembly; 1121. a first bracket; 1122. a first coil; 1123. a first valve stem; 1124. a second reset member; 113. a second control assembly; 1131. a second bracket; 1132. a second coil; 1133. a second valve stem; 1134. a third reset member; 114. a third control assembly; 1141. a housing; 1142. a power member; 1143. a slider; 1144. a first reset member; 1145. sealing the cover; 1146. a boss; 1147. blocking; 115. an air intake passage; 116. a first flow-through chamber; 1161. a first valve port; 117. a first air outlet channel; 1171. a second valve port; 1172. a buffer groove; 118. a flow-through tube; 1181. a third valve port; 120. a regulating valve structure; 121. a fourth control assembly; 1211. a third support; 1212. a third coil; 1213. a flux guide rod; 1214. a fourth reset member; 1215. a valve assembly; 12151. a third valve stem; 12152. a blocking cover; 12153. a diaphragm; 122. a second valve body; 1221. a second flow-through chamber; 1222. a fourth valve port; 1223. a fourth opening; 123. a joint; 1231. and a second air outlet channel.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

In one embodiment, referring to fig. 1, 3 and 4, a shutoff valve structure 110 includes: a first valve body 111, a first control assembly 112, a second control assembly 113, and a third control assembly 114. An air inlet channel 115, a first flow-through cavity 116 and a first air outlet channel 117 are arranged in the first valve body 111. The first flow-through chamber 116 communicates with the inlet channel 115 through the first valve port 1161, the first flow-through chamber 116 communicates with the first outlet channel 117 through the second valve port 1171, and the first flow-through chamber 116 communicates with the inlet channel 115 or the first outlet channel 117 through the third valve port 1181. When the third valve opening 1181 communicates with the intake passage 115, the opening area S of the third valve opening 1181₃Is smaller than the opening area S of the first valve port 1161₁(ii) a When third valve 1181 is in communication with first air outlet channel 117, the opening area S of third valve 1181₃Is smaller than the opening area S of the second valve port 1171₂. The first valve body 111 is provided with a first opening 1116 opposite to the first valve port 1161, a second opening 1117 opposite to the second valve port 1171, and a third opening 1118 opposite to the third valve port 1181 at intervals. The first outlet passage 117 is adapted to communicate with the second flow-through cavity 1221 in the regulator valve structure 120. The first control assembly 112, the second control assembly 113 and the third control assembly 114 are mounted on the first valve body 111 at intervals. The control end of the first control assembly 112 passes through the first opening 1116 to control the opening and closing of the first valve port 1161. The control end of the second control assembly 113 controls opening and closing of the second valve port 1171 through the second opening 1117. A control end of the third control assembly 114 controls opening and closing of the third orifice 1181 through the third opening 1118.

In the stop valve structure 110, the third valve opening 1181 is additionally arranged in the first valve body 111 to form an additional branch airflow channel. Referring to fig. 3, when the third valve port 1181 is communicated between the first flow-through cavity 116 and the first air outlet channel 117, during ignition, the second control element 113 closes the second valve port 1171, and the first control element 112 and the third control element 114 correspondingly open the first valve port 1161 and the third valve port 1181, respectively, so that air flows through the air inlet channel 115, the first valve port 1161, the first flow-through cavity 116, the third valve port 1181 and the first air outlet channel 117 in sequence. Due to the opening area S of the third valve 1181₃Is smaller than the opening area S of the second valve port 1171₂Therefore, the gas flow entering the first gas outlet channel 117 is not large, the gas content in the combustion chamber during ignition is effectively controlled, and the gas is prevented from deflagration or detonation; after successful ignition, the second valve port 1171 is opened and the third valve port 1181 is closed. When the third valve port 1181 is communicated between the intake passage 115 and the first circulation chamber 116, during ignition, the first control component 112 closes the first valve port 1161, and the second control component 113 and the third control component 114 correspondingly open the second valve port 1171 and the third valve port 1181, respectively, so that the airflow sequentially flows through the intake passage 115, the third valve port 1181, the first circulation chamber 116, the second valve port 1171 and the first outlet passage 117, which is not shown in the drawing. Due to the opening area S of the third valve 1181₃Is smaller than the opening area S of the first valve port 1161₁Therefore, the gas flow entering the first circulation cavity 116 is not large, the gas content in the combustion chamber during ignition is effectively controlled, and the gas is prevented from deflagration or detonation; after successful ignition, the first valve port 1161 is opened and the third valve port 1181 is closed. Therefore, the branch airflow channel is arranged in the embodiment, the temporary flow channel of the airflow in the first valve body 111 is changed, the gas content of the airflow entering the combustion chamber is controlled, detonation or roaring cannot be caused in the moment of ignition, the problem that potential safety hazards exist in a water heater or a water heater is effectively solved, and the use experience of a user of the water heating equipment is promoted.

It should be noted that the opening area is understood as the flow rate of the gas flow flowing in from the first valve port 1161, the second valve port 1171 and the third valve port 1181 per unit length, and the larger the opening area is, the more the gas flow flows in. In this embodiment, the shapes of the first valve port 1161, the second valve port 1171 and the third valve port 1181 are not particularly limited, and only the size relationship of the opening areas of the first valve port 1161, the second valve port 1171 and the third valve port 1181 is required. Such as: the first, second, and third valve ports 1161, 1171, 1181 may be shaped to: circular, oval, square, pentagonal, etc. In addition, the specific size relationship between the third valve port 1181 and the first valve port 1161 and the second valve port 1171 can be set according to the actual product and the user's requirement.

It should be further noted that the first control component 112, the second control component 113 and the third control component 114 are opening and closing devices for correspondingly controlling the first valve port 1161, the second valve port 1171 and the third valve port 1181, and since there are many control manners, there are no specific limitations in this embodiment, for example: the first, second and third control assemblies 112, 113, 114 may each be moving magnet solenoid valves or moving iron core solenoid valves. Of course, the first control assembly 112, the second control assembly 113 and the third control assembly 114 may also be other power driven devices, such as: the valve comprises an electric control cylinder device, an electric control hydraulic device or a driving device which drives a valve core to rotate to open and close a valve port by adopting a motor. In addition, it should be noted that the control ends of the first control assembly 112, the second control assembly 113 and the third control assembly 114 are understood as follows: the first control assembly 112, the second control assembly 113 and the third control assembly 114 respectively act on parts of the valve port, for example, when the first control assembly 112, the second control assembly 113 and the third control assembly 114 are all solenoid valve devices, the control ends of the first control assembly 112, the second control assembly 113 and the third control assembly 114 are all one ends of a valve rod or a magnetic conductive rod.

Further, referring to fig. 3, the first circulation cavity 116 is communicated with the inlet channel 115 or the first outlet channel 117 through the circulation pipe 118, and one port of the circulation pipe 118 is a third valve 1181, so that the third valve 1181 of the present embodiment is not directly disposed between the first circulation cavity 116 and the inlet channel 115 or the first outlet channel 117, but indirectly communicates with the inlet channel 115 or the first outlet channel 117 through the circulation pipe 118, so that the third control element 114 can more easily act on the third valve 1181, thereby facilitating the opening and closing operation of the third valve 1181.

The flow pipe 118 is specifically provided in the first valve body 111 in various ways, such as: a flow pipe 118 is located in the intake passage 115, and one end of the flow pipe 118 communicates with the first flow chamber 116; alternatively, the flow pipe 118 is located in the first flow chamber 116, and one end of the flow pipe 118 communicates with the intake passage 115; both the above two arrangements can realize that the first circulation cavity 116 is communicated with the intake channel 115 through the third valve port 1181. Of course, the arrangement of the flow-through pipe 118 may also be: the flow-through pipe 118 is positioned in the first flow-through cavity 116, and one end of the flow-through pipe 118 is communicated with the first air outlet channel 117; alternatively, flow-through tube 118 is located in first outlet channel 117, and one end of flow-through tube 118 is in communication with first flow-through cavity 116, in which case the arrangement requires adapting the shape of first outlet channel 117 so that third control element 114 can act on third valve orifice 1181; similarly, the two arrangements can achieve the communication between the first through cavity 116 and the first air outlet channel 117 through the third valve port 1181.

In other embodiments, third orifice 1181 may be disposed directly in first flow-through cavity 116 and inlet channel 115 or first outlet channel 117 without extending through flow-through tube 118. That is, a third orifice 1181 is formed on the inner wall between the first circulation chamber 116 and the intake passage 115; alternatively, a third orifice 1181 is formed in the inner wall between the first circulation chamber 116 and the first air outlet channel 117.

Further, referring to fig. 3, a flow-through tube 118 is located within the first flow-through chamber 116. The end of flow pipe 118 remote from third valve orifice 1181 is in communication with first outlet channel 117. Opening area S of third valve 1181₃Is smaller than the opening area S of the second valve port 1171₂. Therefore, in the stop valve structure 110 of the present embodiment, a branch airflow channel parallel to the second valve port 1171 is additionally arranged in the first valve body 111, that is, during ignition, the first valve port 1161 and the third valve port 1181 are opened, and the second valve port 1171 is closed, so that airflow sequentially flows through the intake channel 115, the first valve port 1161, the first flow-through cavity 116, the third valve port 1181, and the first exhaust channel 117, so as to reduce the content of the gas flowing into the first exhaust channel 117, and ensure that the flow rate of the gas entering the combustion chamber is relatively reduced. Meanwhile, in the embodiment, the flow pipe 118 is located in the first flow cavity 116, so that the normal content of the airflow in the first flow cavity 116 is ensured, after the ignition is successful, when the second valve port 1171 is opened, the airflow can quickly enter the first air outlet channel 117, and the normal combustion of the combustion chamber is ensured.

In one embodiment, referring to fig. 3, an inner wall of the first outlet channel 117 near the flow-through tube 118 is recessed toward the first flow-through cavity 116 to form a buffer groove 1172. Because the opening area of the third valve opening 1181 is smaller than that of the second valve opening 1171, the speed of the air flowing into the first air outlet channel 117 is increased, so that a buffer groove 1172 is formed by recessing an inner wall of the first air outlet channel 117, the local space in the first air outlet channel 117 is enlarged, the flow speed of the air flowing out of the third valve opening 1181 is reduced, the air flow is ensured to enter the combustion chamber stably, and the stable combustion of flame is ensured.

Specifically, referring to fig. 3, the buffer groove 1172 is an inward concave circular arc groove.

In one embodiment, referring to fig. 3, the third valve port 1181 is located between the first valve port 1161 and the second valve port 1171, so that an installation space of the third control assembly 114 on the first valve body 111 is enlarged, and thus installation of the third control assembly 114 is more convenient, which is beneficial to improving assembly efficiency of the gas proportional valve 100.

In one embodiment, referring to fig. 5, the first valve body 111 includes a valve body 1111 and an end cap 1112 mounted on the valve body 1111. A first communication chamber 116 is formed between the end cap 1112 and the valve body 1111. The inlet channel 115 and the first outlet channel 117 are disposed on the valve body 1111. The third opening 1118 and the third control element 114 are both disposed on the end cap 1112. Thus, when the third orifice 1181 is machined, the end cap 1112 is detached from the valve body 1111, exposing the first circulation chamber 116; then, a structure such as the vent pipe 118 or the third valve 1181 is formed on the inner wall of the first flow-through chamber 116, so that the machining operation of the branch gas flow passage of the gas proportional valve 100 is facilitated.

Alternatively, the end cap 1112 may be attached to the valve body 1111 by a threaded connection, an adhesive connection, a snap connection, a pin connection, a threaded connection, or the like.

Further, referring to fig. 2, the first valve body 111 further includes a second sealing member 11111. The second sealing member 11111 is disposed between the valve body 1111 and the end cover 1112, so as to improve air tightness between the valve body 1111 and the end cover 1112 and prevent air leakage between the valve body 1111 and the end cover 1112.

Alternatively, the second sealing member 11111 may be made of NBR (Nitrile Butadiene Rubber), EPDM (Ethylene Propylene Diene Monomer), fluorobiur (fluorine Rubber), or the like.

Further, referring to fig. 2 and 5, the valve body 1111 is provided with a first mounting groove 11112. The first mounting groove 11112 extends around the circumference of the end cap 1112 and the second seal 11111 is disposed within the first mounting groove 11112. In this way, the first mounting groove 11112 enables the second sealing member 11111 to be mounted more stably, and ensures more stable air-tightness between the valve main body 1111 and the end cap 1112.

In one embodiment, referring to FIG. 5, the end cap 1112 is provided with a base 1113. Base 1113 is disposed about a periphery of third opening 1118. The third control assembly 114 is mounted on the base 1113, so as to ensure that the third control assembly 114 is stably mounted on the end cover 1112, so as to stably realize the opening and closing control operation of the third valve opening 1181.

In one embodiment, referring to fig. 2, the third control assembly 114 includes a housing 1141, a power member 1142, and a sliding member 1143. The housing 1141 is mounted on the first valve body 111. The power element 1142 is mounted in the housing 1141. The sliding member 1143 is drivingly engaged with the power member 1142, and one end of the sliding member 1143 passes through the third opening 1118 to close the third opening 1181. When ignition is started, the power element 1142 is activated to drive the sliding element 1143 to move in a direction away from the third orifice 1181, so that one end of the sliding element 1143 is disengaged from the third orifice 1181, and the third orifice 1181 is in an open state, thereby ensuring that the air flow flows into the third orifice 1181 and effectively controlling the air flow entering the combustion chamber.

It should be noted that the power element 1142 may be a cylinder, a hydraulic cylinder, an electric cylinder, or a coil winding. When the power element 1142 is a coil winding, the sliding element 1143 is sleeved in the coil winding, and the sliding element 1143 is pushed by the electromagnetic force generated by the coil winding.

Specifically, the power element 1142 is a coil winding, and the sliding element 1143 is a magnetic element or a magnetic conductive element.

Further, referring to fig. 3, an end of the sliding component 1143 away from the power component 1142 is sleeved with a plugging plug 1147. The plug 1147 can seal off the flow tube 118 at one end.

In one embodiment, referring to fig. 2, the shut-off valve structure 110 further comprises a first seal 1115. The first sealing member 1115 is disposed between the first valve body 111 and the housing 1141, so that the first sealing member 1115 improves the air tightness between the first valve body 111 and the housing 1141, and prevents the air flow from leaking between the first valve body 111 and the housing 1141.

Alternatively, the first sealing member 1115 may be made of NBR (Nitrile Butadiene Rubber), EPDM (Ethylene Propylene Diene Monomer), fluoronber (viton), or the like.

Specifically, referring to fig. 2, a second mounting groove 1114 is formed on the base 1113, the second mounting groove 1114 is disposed around the periphery of the third opening 1118, and the first sealing member 1115 is disposed in the second mounting groove 1114.

In one embodiment, referring to fig. 3, the third control assembly 114 further includes a first reset element 1144. The first reset member 1144 is disposed between the sliding member 1143 and the housing 1141, and the first reset member 1144 is used for pushing the sliding member 1143 out of the housing 1141. When the power element 1142 stops working, the sliding element 1143 is pushed out of the housing 1141 under the action of the first resetting element 1144, such that one end of the sliding element 1143 is sealed on the third valve port 1181, and the sliding element is in a closed state, thereby ensuring that the gas flow normally circulates in the first valve body 111 (i.e. sequentially flows through the inlet channel 115, the first valve port 1161, the first circulation cavity 116, the second valve port 1171, and the first outlet channel 117), and ensuring that the gas-fired water heating apparatus normally operates.

Further, referring to fig. 3, the first restoring member 1144 is a spring. The spring is sleeved on the sliding member 1143, one end of the spring is connected to the housing 1141, and the other end of the spring is connected to the plug 1147, so that the sliding member 1143 is stably pushed out of the housing 1141 by the spring.

Further, referring to fig. 3, the third control component 114 further includes a cover 1145. The cover 1145 is mounted on an end of the housing 1141 facing the first valve body 111, a boss 1146 is disposed on a side of the cover 1145 facing away from the housing 1141, and an end of the sliding member 1143 extends out of the cover 1145. And a sleeve of the spring is arranged on the boss 1146, so that the spring is stably fixed, and the spring is prevented from shaking during compression or stretching.

Specifically, referring to fig. 3, the boss 1146 is a circular truncated cone structure.

In one embodiment, referring to fig. 3, the first control assembly 112 includes a first bracket 1121, a first coil 1122, and a first stem 1123. The first bracket 1121 is mounted on the first valve body 111. The first coil 1122 is mounted on the first bracket 1121. The first stem 1123 is fitted within the first coil 1122. One end of the first stem 1123 can be sealed off at the first valve port 1161 through the first opening 1116. Therefore, when the valve is ignited, the first coil 1122 is energized, the first valve stem 1123 is driven by electromagnetic force to move away from the first valve port 1161, and the first valve port 1161 is opened, so that the airflow from the intake channel 115 stably flows into the first flow-through cavity 116.

Alternatively, the first stem 1123 may be a magnetically permeable material or a magnetic material.

Further, referring to fig. 3, the first control assembly 112 further includes a second reset component 1124. The second restoring member 1124 is disposed between the first valve stem 1123 and the first bracket 1121, and the second restoring member 1124 is configured to push the first valve stem 1123 out of the first bracket 1121. In this way, the second restoring member 1124 allows the first valve stem 1123 to be sealed off from the first valve port 1161 again, so that the first valve port 1161 is in a closed state.

In one embodiment, referring to fig. 3, the second control assembly 113 includes a second support 1131, a second coil 1132 and a second valve rod 1133, the second support 1131 is mounted on the first valve body 111, the second coil 1132 is mounted on the second support 1131, the second valve rod 1133 is sleeved in the second coil 1132, and one end of the second valve rod 1133 can be plugged in the second valve opening 1171 through the second opening 1117. It can be seen that, when the ignition is successful, the second coil 1132 is energized to magnetically drive the second valve rod 1133 away from the second valve port 1171, so as to open the second valve port 1171, so that the gas flow from the first flow-through cavity 116 is stably flowed into the first gas outlet channel 117.

Alternatively, second valve stem 1133 may be a magnetically permeable material or a magnetic material.

Further, referring to fig. 3, the second control assembly 113 further includes a third reset element 1134. A third restoring member 1134 is disposed between the second valve stem 1133 and the second bracket 1131, and the third restoring member 1134 is used to push the second valve stem 1133 out of the second bracket 1131. In this manner, the second valve stem 1133 is resealed against the second valve port 1171 by the third restoring element 1134, so that the second valve port 1171 is in a closed state.

Specifically, the second and third restoring members 1124 and 1134 are both springs.

In one embodiment, referring to fig. 1 and 3, a gas proportional valve 100 includes a joint 123, a regulating valve structure 120, and a stop valve structure 110 in any of the above embodiments. The regulator valve structure 120 includes a second valve body 122 and a fourth control assembly 121. A second flow-through chamber 1221 is provided in the second valve body 122. The first valve body 111 is connected to the second valve body 122. The first air outlet passage 117 communicates with the second circulation chamber 1221. The second valve body 122 is provided with a fourth valve port 1222 and a fourth valve port 1223 at an interval. A second outlet passage 1231 is provided in the joint 123. The second air outlet passage 1231 communicates with the second flow-through chamber 1221 through the fourth valve port 1222. The fourth control assembly 121 controls the opening of the fourth valve port 1222 through the fourth opening 1223.

The gas proportional valve 100 adopts the stop valve structure 110, and the third valve opening 1181 is additionally arranged in the first valve body 111 to form an additional branch gas flow channel. When the third valve port 1181 is communicated between the first flow-through cavity 116 and the first air outlet channel 117, the second control component 113 closes the second valve port 1171 during ignition, and the first control component 112 and the third control component 114 correspondingly open the first valve port 1161 and the third valve port 1181, respectively, so that the air flows through the air inlet channel 115, the first valve port 1161, the first flow-through cavity 116, the third valve port 1181 and the first air outlet channel 117 in sequence. Due to the opening area S of the third valve 1181₃Is smaller than the opening area S of the second valve port 1171₂Therefore, the gas flow entering the first gas outlet channel 117 is not large, the gas content in the combustion chamber during ignition is effectively controlled, and the gas is prevented from deflagration or detonation; after successful ignition, the second valve port 1171 is opened and the third valve port 1181 is closed. When the third valve opening 1181 is communicated between the intake passage 115 and the first circulation chamber 116, ignition is performedAt this time, the first control component 112 closes the first valve port 1161, and the second control component 113 and the third control component 114 correspondingly open the second valve port 1171 and the third valve port 1181, respectively, so that the airflow sequentially flows through the inlet channel 115, the third valve port 1181, the first circulation chamber 116, the second valve port 1171 and the first outlet channel 117. Due to the opening area S of the third valve 1181₃Is smaller than the opening area S of the first valve port 1161₁Therefore, the gas flow entering the first circulation cavity 116 is not large, the gas content in the combustion chamber during ignition is effectively controlled, and the gas is prevented from deflagration or detonation; after successful ignition, the first valve port 1161 is opened and the third valve port 1181 is closed. Therefore, the branch airflow channel is arranged in the embodiment, the temporary flow channel of the airflow in the first valve body 111 is changed, the gas content of the airflow entering the combustion chamber is controlled, detonation or roaring cannot be caused in the moment of ignition, the problem that potential safety hazards exist in a water heater or a water heater is effectively solved, and the use experience of a user of the water heating equipment is promoted.

It should be noted that, during ignition, the fourth control assembly 121 is activated to open the fourth valve port 1222, so that the second flow-through cavity 1221 is communicated with the second air outlet channel 1231. When the air flow flows into the first air outlet channel 117, the air flow enters the second flow-through cavity 1221; then flows into the second air outlet channel 1231 from the second flow-through cavity 1221; and finally, the gas enters the combustion chamber through second gas outlet channel 1231.

It should be noted that, in the present embodiment, the fourth control component 121 is not specifically limited, for example: the fourth control assembly 121 may be a moving magnet solenoid valve or a moving iron core solenoid valve. Of course, the fourth control assembly 121 may also be other power driven devices, such as: the valve comprises an electric control cylinder device, an electric control hydraulic device or a driving device which drives a valve core to rotate to open and close a valve port by adopting a motor.

Alternatively, the connection between the first valve body 111 and the second valve body 122 may be a bolt connection, a screw connection, a snap connection, a welding, a riveting, an integral molding, and the like.

Further, referring to fig. 3, the fourth control assembly 121 includes a third holder 1211, a third coil 1212, a flux bar 1213 and a valve assembly 1215. The third holder 1211 is mounted on the second valve body 122. The third coil 1212 is mounted on the third holder 1211, and the magnetic rod 1213 is fitted into the second coil 1132. One end of the valve assembly 1215 is connected to the magnetic rod 1213, and the other end of the valve assembly 1215 is blocked at the fourth valve port 1222.

Specifically, referring to fig. 2, the valve assembly 1215 includes a third stem 12151 and a closure cap 12152 and a diaphragm 12153 disposed on the third stem 12151. The blocking cover 12152 is used to block the fourth port 1222. The membrane 12153 is used to close off the fourth opening 1223.

Further, referring to fig. 3, the fourth control element 121 further includes a fourth reset element 1214. The fourth restoring member 1214 is disposed between the magnetic rod 1213 and the second valve body 122, and the fourth restoring member 1214 serves to restore the magnetic rod 1213 to the original state.

In one embodiment, please refer to fig. 1, a gas water heater includes the above gas proportional valve 100.

In the gas water heating apparatus, the stop valve structure 110 is adopted, and the third valve opening 1181 is additionally arranged in the first valve body 111 to form an additional branch gas flow channel. When the third valve port 1181 is communicated between the first flow-through cavity 116 and the first air outlet channel 117, the second control component 113 closes the second valve port 1171 during ignition, and the first control component 112 and the third control component 114 correspondingly open the first valve port 1161 and the third valve port 1181, respectively, so that the air flows through the air inlet channel 115, the first valve port 1161, the first flow-through cavity 116, the third valve port 1181 and the first air outlet channel 117 in sequence. Due to the opening area S of the third valve 1181₃Is smaller than the opening area S of the second valve port 1171₂Therefore, the gas flow entering the first gas outlet channel 117 is not large, the gas content in the combustion chamber during ignition is effectively controlled, and the gas is prevented from deflagration or detonation; after successful ignition, the second valve port 1171 is opened and the third valve port 1181 is closed. When the third valve opening 1181 is communicated between the intake passage 115 and the first circulation chamber 116, the first control component 112 closes the first valve opening 1161, and the second control component 113 and the third control component 114 open the second valve opening correspondingly at the time of ignition1171 and third valve 1181, such that gas flows through inlet channel 115, third valve 1181, first flow-through chamber 116, second valve 1171 and first outlet channel 117, in that order. Due to the opening area S of the third valve 1181₃Is smaller than the opening area S of the first valve port 1161₁Therefore, the gas flow entering the first circulation cavity 116 is not large, the gas content in the combustion chamber during ignition is effectively controlled, and the gas is prevented from deflagration or detonation; after successful ignition, the first valve port 1161 is opened and the third valve port 1181 is closed. Therefore, the branch airflow channel is arranged in the embodiment, the temporary flow channel of the airflow in the first valve body 111 is changed, the gas content of the airflow entering the combustion chamber is controlled, detonation or roaring cannot be caused in the moment of ignition, the problem that potential safety hazards exist in a water heater or a water heater is effectively solved, and the use experience of a user of the water heating equipment is promoted.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A shut-off valve arrangement, characterized in that the shut-off valve arrangement (110) comprises:

the valve comprises a first valve body (111), wherein an air inlet channel (115), a first flow-through cavity (116) and a first air outlet channel (117) are arranged in the first valve body (111), the first flow-through cavity (116) is communicated with the air inlet channel (115) through a first valve port (1161), and the first flow-through cavity is communicated with the air inlet channel (115) through a first valve port (1161)The cavity (116) is communicated with the first air outlet channel (117) through a second valve port (1171), the first flow-through cavity (116) is communicated with the air inlet channel (115) or the first air outlet channel (117) through a third valve port (1181), and when the third valve port (1181) is communicated with the air inlet channel (115), the opening area S of the third valve port (1181) is larger than the opening area S of the first valve port (117)₃Is smaller than the opening area S of the first valve port (1161)₁(ii) a When the third valve port (1181) is communicated with the first air outlet channel (117), the opening area S of the third valve port (1181) is₃Is smaller than the opening area S of the second valve port (1171)₂A first opening (1116) opposite to the first valve port (1161), a second opening (1117) opposite to the second valve port (1171) and a third opening (1118) opposite to the third valve port (1181) are arranged on the first valve body (111) at intervals, and the first air outlet channel (117) is used for being communicated with a second through cavity (1221) in the regulating valve structure (120);

the valve comprises a first control assembly (112), a second control assembly (113) and a third control assembly (114), wherein the first control assembly (112), the second control assembly (113) and the third control assembly (114) are arranged on the first valve body (111) at intervals, a control end of the first control assembly (112) penetrates through the first opening (1116) to control the opening and closing of the first valve port (1161), a control end of the second control assembly (113) penetrates through the second opening (1117) to control the opening and closing of the second valve port (1171), and a control end of the third control assembly (114) penetrates through a third opening (1118) to control the opening and closing of the third valve port (1181).

2. The shutoff valve structure according to claim 1, wherein the first circulation chamber (116) communicates with the intake passage (115) or the first exhaust passage (117) via a circulation pipe (118), and a port of the circulation pipe (118) is the third valve port (1181).

3. A valve arrangement according to claim 2, wherein the flow-through tube (118) is located in the first flow-through chamber (116), the end of the flow-through tube (118) remote from the third valve port (1181) and the third valve port (1181) being in communication withThe first air outlet channel (117) is communicated, and the opening area S of the third valve port (1181)₃Is smaller than the opening area S of the second valve port (1171)₂。

4. A stop valve structure according to claim 3, wherein an inner wall of said first outlet passage (117) adjacent to said flow pipe (118) is recessed toward said first flow chamber (116) and forms a buffer groove (1172); and/or the presence of a gas in the gas,

the third valve port (1181) is located between the first valve port (1161) and the second valve port (1171).

5. The shutoff valve structure according to claim 3, wherein the first valve body (111) includes a valve main body (1111) and an end cover (1112) mounted on the valve main body (1111), the first circulation chamber (116) being formed between the end cover (1112) and the valve main body (1111), the intake passage (115) and the first exhaust passage (117) being provided on the valve main body (1111), the third opening (1118) and the third control member (114) being provided on the end cover (1112).

6. A valve arrangement according to any one of claims 1 to 5, wherein the third control assembly (114) comprises a housing (1141), a power member (1142) and a slider (1143), the housing (1141) being mounted on the first valve body (111), the power member (1142) being mounted within the housing (1141), the slider (1143) being in driving engagement with the power member (1142), the slider (1143) being capable of blocking the third valve port (1181) at one end thereof passing through the third opening 1118.

7. The shut-off valve arrangement according to claim 6, characterized in that the shut-off valve arrangement (110) further comprises a first seal (1115), the first seal (1115) being disposed between the first valve body (111) and the housing (1141); and/or the presence of a gas in the gas,

the third control assembly (114) further comprises a first reset member (1144), the first reset member (1144) is disposed between the sliding member (1143) and the housing (1141), and the first reset member (1144) is used for pushing the sliding member (1143) out of the housing (1141).

8. The stop valve structure according to any one of claims 1 to 5, wherein the first control assembly (112) comprises a first bracket (1121), a first coil (1122) and a first valve rod (1123), the first bracket (1121) is mounted on the first valve body (111), the first coil (1122) is mounted on the first bracket (1121), the first valve rod (1123) is sleeved in the first coil (1122), and one end of the first valve rod (1123) can be blocked at the first valve port (1161) through a first opening (1116); and/or the presence of a gas in the gas,

the second control assembly (113) comprises a second support (1131), a second coil (1132) and a second valve rod (1133), the second support (1131) is installed on the first valve body (111), the second coil (1132) is installed on the second support (1131), the second valve rod (1133) is sleeved in the second coil (1132), and one end of the second valve rod (1133) can be plugged at the second valve port (1171) through a second opening (1117).

9. A gas proportional valve, comprising a connector (123), a regulating valve structure (120) and a shut-off valve structure according to any one of claims 1 to 8, the regulating valve structure (120) comprises a second valve body (122) and a fourth control assembly (121), a second circulation cavity (1221) is arranged in the second valve body (122), the first valve body (111) is connected with the second valve body (122), the first air outlet channel (117) is communicated with the second circulation cavity (1221), a fourth valve port (1222) and a fourth opening (1223) are arranged on the second valve body (122) at intervals, a second air outlet channel (1231) is arranged in the joint (123), the second air outlet channel (1231) is communicated with the second circulation cavity (1221) through the fourth valve port (1222), the fourth control assembly (121) controls the opening degree of the fourth valve port (1222) through the fourth opening (1223).

10. A gas-fired water heating apparatus, characterized by comprising a gas-fired proportional valve (100) according to claim 9.

Images