WO2013139187A1

WO2013139187A1 - Bidirectional solenoid valve

Info

Publication number: WO2013139187A1
Application number: PCT/CN2013/071062
Authority: WO
Inventors: 严卫林
Original assignee: 浙江三花股份有限公司
Priority date: 2012-03-21
Filing date: 2013-01-29
Publication date: 2013-09-26

Abstract

A bidirectional solenoid valve comprises a valve seat (1) provided with a main valve port (11) and a valve chamber. A piston (2) is provided in the valve chamber, and the piston (2) divides the valve chamber into an upper chamber (12) and a lower chamber (13). An upper end portion of the piston (2) is provided with a pilot valve port (21). A circulation gap (14) is disposed between a circumferential side wall of the piston (2) and a corresponding inner wall of the valve chamber. The piston is provided with a first branch in unidirectional communication from the upper chamber (12) to an end of a horizontal connecting tube (31), and a second branch in unidirectional communication from the upper chamber (12) to an end of a vertical connecting tube (32). The piston is further provided with a third branch in unidirectional communication from an end of the vertical connecting tube (32) to the upper chamber (12). The bidirectional solenoid valve can reduce the number of components and parts, simplify the assembly process, and reduce the manufacturing cost.

Description

一种双向电磁阀本申请要求于 2012 年 3 月 21 日提交中国专利局、申请号为 201210077374.4、发明名称为 "一种双向电磁阀" 的中国专利申请的优先权，其全部内容通过引用结合在本申请中。 A two-way solenoid valve is claimed in the Chinese Patent Application No. 201210077374.4, the entire disclosure of which is incorporated herein by reference. In this application.

本申请要求于 2012 年 3 月 21 日提交中国专利局、申请号为 201210077156.0、发明名称为 "一种双向电磁阀" 的中国专利申请的优先权，其全部内容通过引用结合在本申请中。技术领域 The present application claims priority to Chinese Patent Application No. 201210077156.0, entitled "A Two-Way Solenoid Valve", filed on March 21, 2012, the entire contents of which is incorporated herein by reference. Technical field

本发明涉及电磁阀技术领域，特别涉及一种双向电磁阀。背景技术 The invention relates to the technical field of electromagnetic valves, and in particular to a two-way electromagnetic valve. Background technique

一般电磁阀，由于结构的限制，只能单向流通、截止。在空调*** 中，特别是热泵***中，冷媒在制冷、制热时的流向相反，因而一般的单通电磁阀需要与单向阀配合使用。然而，双向电磁阀可以实现双向导通、截止，因而不用与单向阀配合使用，可以在***管路中直接使用，因而具有较为明显的成本优势。 General solenoid valves, due to structural constraints, can only be circulated and cut off in one direction. In an air conditioning system, particularly a heat pump system, the flow direction of the refrigerant during cooling and heating is reversed, so that a general one-way solenoid valve needs to be used in conjunction with a one-way valve. However, the two-way solenoid valve can be double-conducted and cut-off, so it can be used directly in the system piping without using it with the one-way valve, so it has obvious cost advantages.

在现有技术中，日本专利 "特开平 6-101780" 公开了一种双向电磁阀，具体请参考图 1和图 2, 图 1为现有技术中一种双向电磁阀的结构示意图；图 2为图 1中双向电磁阀的第一逆止阀和第二逆止阀的结构示意图；图 3为图 1中双向电磁阀的活塞、第一逆止阀和第二逆止阀构成的局部结构示意图。 In the prior art, a two-way electromagnetic valve is disclosed in Japanese Patent Laid-Open No. Hei 6-110780. For details, please refer to FIG. 1 and FIG. 2. FIG. 1 is a schematic structural view of a two-way electromagnetic valve in the prior art; 1 is a schematic structural view of a first check valve and a second check valve of the two-way solenoid valve of FIG. 1; FIG. 3 is a partial structure of a piston, a first check valve and a second check valve of the two-way electromagnetic valve of FIG. schematic diagram.

该现有技术中的双向电磁阀的工作过程如下： The working process of the prior art two-way solenoid valve is as follows:

正向闭合状态：如图 1和图 3所示，电磁阀的线圏 4'4未通电时，当横接管 3'2通高压冷媒时，高压冷媒经活塞 2'的平衡孔 2'3进入活塞内部，高压冷媒打开由第一逆止阀 5Ί密封的第一导阀口 2'1,进入活塞 2' 上方的阀座 1'的上腔 1'2, 高压冷媒充满着整个上腔 1'2；此时，由于第二逆止阀 5'2在上腔 1'2中高压冷媒的作用下，密封第二导阀口 2'2, 因而上腔 1'2中为高压端；此时，由于上腔 1'2中活塞 2'的受力面积大于阀座 1'的下腔 1'3中活塞 2'的受力面积，并由于竖接管 3Ί—端为低压端，因而在压力差的作用下，活塞 2'关闭阀座 1'的主阀口 1Ί , 电磁阀关闭。 Positive closed state: As shown in Fig. 1 and Fig. 3, when the coil 4'4 of the solenoid valve is not energized, when the cross tube 3'2 passes the high pressure refrigerant, the high pressure refrigerant enters through the balance hole 2'3 of the piston 2'. Inside the piston, the high-pressure refrigerant opens the first pilot port 2'1 sealed by the first check valve 5Ί, enters the upper chamber 1'2 of the valve seat 1' above the piston 2', and the high-pressure refrigerant fills the entire upper chamber 1'2; at this time, due to the first The second check valve 5'2 seals the second pilot valve port 2'2 under the action of the high pressure refrigerant in the upper chamber 1'2, so that the upper chamber 1'2 is a high pressure end; at this time, due to the upper chamber 1'2 The force receiving area of the middle piston 2' is larger than the force receiving area of the piston 2' in the lower chamber 1'3 of the valve seat 1', and since the vertical end of the vertical connecting tube 3 is the low pressure end, the piston 2' under the action of the pressure difference Close the main valve port 1 of the seat 1' and the solenoid valve closes.

正向开启状态：如图 1和图 3所示，当电磁阀线圏 4'4通电时，套管 4Ί中的动铁芯 4'2在电磁阀力的作用下向上运动，与静铁芯 4'3吸合，动铁芯 4'2向上运动一段空行程之后，带动支持体 5'向上运动，支持体 5'进而带动第二逆止阀 5'2开启第二导阀口 2'2；此时，高压冷媒通过第二导阀口 2'2, 进而沖开单向阀芯 2'4, 进入竖接管 3Ί—端，由于活塞 2'上的平衡孔 2'3的流通面积小于第二导阀口 2'2的流通面积，因而上腔 1'2中的压力下降，形成氐压端，此时下腔 1'3中为高压端，在压力差的作用下，活塞 2'向上运动，开启主阀口 1Ί , 电磁阀开启。 Positive open state: As shown in Fig. 1 and Fig. 3, when the solenoid valve wire 4'4 is energized, the moving iron core 4'2 in the sleeve 4Ί moves upward under the action of the solenoid valve force, and the static iron core 4'3 pull-in, after moving the iron core 4'2 upwards for an idle stroke, the support body 5' is moved upward, and the support body 5' drives the second check valve 5'2 to open the second pilot valve port 2'2. At this time, the high-pressure refrigerant passes through the second pilot port 2'2, and then the check valve core 2'4 is opened, and enters the Ί-end of the vertical pipe, because the flow area of the balance hole 2'3 on the piston 2' is smaller than the first The flow area of the second pilot port 2'2, so that the pressure in the upper chamber 1'2 drops, forming a rolling end, at this time the lower chamber 1'3 is a high pressure end, under the action of the pressure difference, the piston 2' moves upward Open the main valve port 1Ί and the solenoid valve opens.

逆向闭合状态：当线圏 4'4未通电时，如图 1和图 3所示，当竖接管 3Ί通高压冷媒时，高压冷媒通过活塞 2'内部的单向阀芯 2'4上的小孔进入第二导阀口 2'2, 并打开由第二逆止阀 5'2密封的第二导阀口 2'2, 进入上腔 1'2, 此时高压冷媒充满着整个上腔 1'2, 并由于第一逆止阀 5Ί 在上腔 1'2中高压冷媒的作用下关闭第一导阀口 2Ί , 因而上腔 Γ2形成高压端；此时，上腔 Γ2和竖接管 3Ί—端均为高压端，但是由于上腔 1'2中活塞 2'的受力面积大于竖接管 3Ί—端主阀口 1Ί所确定的活塞 2' 的受力面积，并由于下腔 1'3和横接管 3'2—端为氏压端，因而在压力差的作用下，活塞 2'关闭主阀口 1Ί , 电磁阀关闭。 Reverse closed state: When the wire 圏 4'4 is not energized, as shown in Fig. 1 and Fig. 3, when the vertical pipe 3 passes through the high pressure refrigerant, the high pressure refrigerant passes through the small one on the one-way spool 2'4 inside the piston 2' The hole enters the second pilot port 2'2, and opens the second pilot port 2'2 sealed by the second check valve 5'2, and enters the upper chamber 1'2, at which time the high pressure refrigerant fills the entire upper chamber 1 '2, and because the first check valve 5 关闭 closes the first pilot port 2 Ί under the action of the high pressure refrigerant in the upper chamber 1 '2, the upper chamber Γ 2 forms a high pressure end; at this time, the upper chamber Γ 2 and the vertical tube 3 Ί The end is a high pressure end, but since the force area of the piston 2' in the upper chamber 1'2 is larger than the force receiving area of the piston 2' determined by the vertical tube 3Ί-end main valve port 1Ί, and due to the lower chamber 1'3 and The cross-section 3'2-end is the end of the pressure, so that under the pressure difference, the piston 2' closes the main valve port 1Ί, and the solenoid valve is closed.

逆向开启状态：当线圏 4'4通电时，如图 1和图 3所示，动铁芯 4'2 在电磁阀力的作用下向上运动，与静铁芯 4'32吸合，动芯铁 4'2向上运动一段空行程之后，带动支持体 5'向上运动，支持体 5'进而带动第一逆止阀 5Ί打开第一导阀口 2Ί , 上腔 1'2中的高压冷媒经第一导阀口 2Ί 和平衡孔 2'3 , 流入横接管 3'2—端；此时，由于单向阀芯 2'4上的小孔的流通面积小于平衡孔 2'3的流通面积，因而上腔 1'2中的压力下降，形成^氐压端，此时竖接管 3Ί—端仍为高压端，在压力差的作用下，活塞 2'向上运动，开启主阀口 Γ1 , 电磁阀打开。 Reverse open state: When the wire 圏 4'4 is energized, as shown in Fig. 1 and Fig. 3, the moving iron core 4'2 moves upward under the action of the electromagnetic valve force, and is sucked with the static iron core 4'32, the moving core After the iron 4'2 moves upwards for an idle stroke, the support body 5' is moved upward, and the support body 5' drives the first check valve 5Ί to open the first pilot valve port 2Ί, and the high pressure refrigerant in the upper chamber 1'2 passes through the first a pilot port 2Ί and a balance hole 2'3 flow into the cross-section 3'2-end; at this time, since the flow area of the small hole in the one-way spool 2'4 is smaller than the flow area of the balance hole 2'3, The pressure in the upper chamber 1'2 drops, forming a pressure end, and the end of the vertical tube 3 is still a high pressure end, under the action of a pressure difference, the piston 2' moves up, opens the main valve port Γ1, and the solenoid valve opens.

然而，上述现有技术中的电磁阀具有如下缺点： However, the above-described prior art solenoid valve has the following disadvantages:

第一，为了实现电磁阀双向打开或关闭，活塞 2'上设有两个导阀口：第一导阀口 2Ί和第二导阀口 2'2,相应地，在支持体 5'设有两个逆止阀：第一逆止阀 5Ί和第二逆止阀 5'2,因而导致零部件较多，结构较为复杂；第二，为了保证两个逆止阀分别与相对应的导阀口配合，需要防止支持体 5'沿周向转动；鉴于此，如图 2所示，需要在支持体 5'上设有两个定位杆 5'3, 同时相对应地在活塞上设有与定位杆 5'3配合的两个定位孔，从而防止支持体 5'发生转动。然而该种结构设计不仅导致零部件较多，而且加工难度大，装配工艺复杂，制造成本较高； First, in order to realize the bidirectional opening or closing of the solenoid valve, the piston 2' is provided with two pilot ports: a first pilot port 2Ί and a second pilot port 2'2, and correspondingly, a support body 5' is provided. Two check valves: the first check valve 5Ί and the second check valve 5'2, thus resulting in more components and more complicated structure; second, in order to ensure that the two check valves are respectively corresponding to the pilot valve In the mouth fit, it is necessary to prevent the support body 5' from rotating in the circumferential direction; in view of this, as shown in Fig. 2, two positioning rods 5'3 are required to be provided on the support body 5', and correspondingly provided on the piston The positioning rod 5'3 is fitted with two positioning holes to prevent the support 5' from rotating. However, this kind of structural design not only leads to more parts, but also has difficulty in processing, complicated assembly process and high manufacturing cost;

第三，由上述两点缺陷可知，该现有技术中的电磁阀零部件较多，装配工艺复杂，装配难度大，因而导致工作的可靠性相对较差。发明内容 Thirdly, it can be seen from the above two defects that the prior art solenoid valve components are numerous, the assembly process is complicated, and the assembly is difficult, so that the reliability of the work is relatively poor. Summary of the invention

本发明要解决的技术问题为提供一种双向电磁阀，该双向电磁阀的结构设计一方面能够显著减少零部件的数量，筒化装配工艺，降低制造成本，另一方面能够提高工作的可靠性。 The technical problem to be solved by the present invention is to provide a two-way electromagnetic valve. The structural design of the two-way electromagnetic valve can significantly reduce the number of components, the assembly process, reduce the manufacturing cost, and improve the reliability of the work. .

为解决上述技术问题，本发明提供一种双向电磁阀，包括设有主阀口和阀腔的阀座，所述阀腔中设有与所述主阀口配合的活塞，所述活塞分隔所述阀腔为上腔和下腔，并所述活塞的上端部设有由导阀部件开启或关闭的导阀口；所述双向电磁阀还包括与所述下腔连通的横接管、及通过所述主阀口与下腔连通的竖接管；所述活塞的周向侧壁与相对应的所述阀腔的内壁之间具有流通间隙；所述活塞上设有均与所述导阀口连通并可由所述上腔向所述横接管一端单向导通的第一支路、及可由所述上腔向所述竖接管一端单向导通的第二支路；所述活塞上还设有可由所述竖接管一端向所述上腔单向导通的第三支路；所述导阀口和所述第二支路所确定的流通面积大于所述流通间隙的流通面积，所述导阀口和所述第一支路所确定的流通面积大于所述第三支路的流通面积；所述第一支路包括径向管路。 In order to solve the above technical problem, the present invention provides a two-way electromagnetic valve including a valve seat provided with a main valve port and a valve chamber, wherein the valve chamber is provided with a piston that cooperates with the main valve port, and the piston separation chamber The valve chamber is an upper chamber and a lower chamber, and an upper end portion of the piston is provided with a pilot valve port that is opened or closed by a pilot valve member; the two-way solenoid valve further includes a cross tube that communicates with the lower chamber, and passes through a vertical pipe communicating with the lower chamber; a circumferential gap between the circumferential side wall of the piston and an inner wall of the corresponding valve cavity; the piston is provided with the valve port a first branch that is openable from the upper chamber to the end of the cross tube, and a second branch that can be single-passed from the upper chamber to the end of the vertical tube; the piston is further provided a third branch that can be unidirectionally guided to the upper chamber by one end of the vertical pipe; a flow area determined by the pilot port and the second branch is larger than a flow area of the flow gap, the pilot valve The flow area determined by the mouth and the first branch is larger than the third branch Circulation area; said first The branch includes a radial line.

优选地，所述阀座的内壁上设有阀座导向段，所述活塞的圓周外壁上设有与所述阀座导向段配合的活塞导向段；所述活塞导向段的下方开设有外径变小的管路安装段，所述径向管路开设于所述管路安装段上；所述阀座导向段的下部进一步开设有环形凹槽，并所述活塞开启所述主阀口时，所述径向管路整体处于所述环形凹槽所正对的范围内。 Preferably, the inner wall of the valve seat is provided with a valve seat guiding section, and a circumferential guiding outer wall of the piston is provided with a piston guiding section that cooperates with the valve seat guiding section; an outer diameter is opened below the piston guiding section a small pipe mounting section, the radial pipe is opened on the pipe installation section; the lower part of the valve seat guiding section is further provided with an annular groove, and the piston opens the main valve port The radial conduit is entirely within the range of the annular groove.

优选地，所述双向电磁阀还包括弹性元件，所述活塞导向段与所述管路安装段之间形成有台阶；所述弹性元件套于所述活塞的下部的周向外部，并弹性支撑于所述台阶与所述阀座的内底壁之间。 Preferably, the two-way solenoid valve further includes an elastic member, and a step is formed between the piston guiding portion and the pipe mounting portion; the elastic member is sleeved on a circumferential outer portion of the lower portion of the piston, and is elastically supported Between the step and the inner bottom wall of the valve seat.

优选地，该径向管路内设有径向密封面及与该径向密封面配合的径向密封体；所述径向管路内还设有使得所述径向密封体沿所述活塞的径向移动的导向座，并该导向座上设有连通所述横接管一端与所述径向管路的导向座通道。 Preferably, the radial pipeline is provided with a radial sealing surface and a radial sealing body matched with the radial sealing surface; the radial pipeline is further provided such that the radial sealing body is along the piston a radially moving guide seat, and the guide seat is provided with a guide seat passage connecting one end of the cross pipe and the radial pipe.

优选地，所述径向管路包括第一径向孔及孔径变大的第二径向孔，所述径向密封面形成于所述第一径向孔与所述第二径向孔之间的台阶上；所述导向座设于所述第二径向孔中，并导向支撑所述径向密封体沿所述活塞的径向移动，以便密封或脱离所述径向密封面。 Preferably, the radial duct includes a first radial hole and a second radial hole having a larger aperture, the radial sealing surface being formed in the first radial hole and the second radial hole The guide seat is disposed in the second radial hole and guides to support the radial sealing body to move along the radial direction of the piston to seal or disengage the radial sealing surface.

优选地，所述导向座为一端设有开口的圓筒，所述径向密封体设于所述圓筒的筒内腔中，所述圓筒以其开口正对所述径向密封面，以便所述径向密封体开启或关闭所述径向密封面；所述导向座通道为开设于所述圓筒的周向侧壁上并连通所述筒内腔与所述第二径向孔的筒缺口。 Preferably, the guide seat is a cylinder having an opening at one end, and the radial sealing body is disposed in a cavity of the cylinder of the cylinder, the cylinder having the opening facing the radial sealing surface, The radial sealing body opens or closes the radial sealing surface; the guiding seat passage is formed on a circumferential side wall of the cylinder and communicates with the cylindrical cavity and the second radial hole The tube gap.

优选地，所述筒缺口进一步延伸至所述圓筒的底部密封端，以便该圓筒的底部密封端与所述第二径向孔的内壁之间具有导通间隙。 Preferably, the barrel notch further extends to the bottom sealed end of the cylinder such that there is a conduction gap between the bottom sealed end of the cylinder and the inner wall of the second radial bore.

优选地，所述圓筒以其周向侧壁过盈配合于所述第二径向孔中。优选地，所述活塞沿轴向进一步开设有与所述导阀口连通的导阀通道，所述导阀口通过所述导阀通道分别与所述第一支路和所述第二支路单向导通。 Preferably, the cylinder is interference fit in the second radial bore with its circumferential side wall. Preferably, the piston further has a pilot valve passage communicating with the pilot valve port in the axial direction, and the pilot valve port is respectively connected to the first branch and the second branch through the pilot valve passage Single-pass.

优选地，所述第二支路包括与所述导阀通道连通的轴向腔体，该轴向腔体与所述导阀通道之间设有第一轴向密封面，所述轴向腔体内设有密封该第一轴向密封面的第一轴向密封体；所述轴向腔体远离所述第一轴向密封面的一端设有第一轴向止动部件，且该第一轴向止动部件设有连通所述轴向腔体与所述竖接管一端的第一轴向通孔。 Preferably, the second branch includes an axial cavity in communication with the pilot passage, the shaft Providing a first axial sealing surface between the cavity and the pilot valve passage, wherein the axial cavity is provided with a first axial sealing body sealing the first axial sealing surface; the axial cavity a first axial stopping member is disposed at an end away from the first axial sealing surface, and the first axial stopping member is provided with a first axial direction connecting the axial cavity and one end of the vertical pipe Through hole.

优选地，所述第一轴向密封体为单向阀芯，所述单向阀芯设有相互连通的阀芯径向孔和阀芯轴向孔，所述阀芯径向孔与所述轴向腔体连通，所述阀芯轴向孔与所述第一轴向通孔连通。 Preferably, the first axial sealing body is a one-way valve core, and the one-way valve core is provided with a valve core radial hole and a valve core axial hole communicating with each other, the valve core radial hole and the valve core The axial cavity is in communication, and the spool axial bore is in communication with the first axial through bore.

优选地，所述第三支路包括与所述竖接管一端连通的第二轴向孔，且该第二轴向孔的另一端连通有孔径变大的第三轴向孔；第二轴向孔与第三轴向孔之间设有第二轴向密封面，并第三轴向孔中设有密封该第二轴向密封面的第二轴向密封体；所述第三轴向孔远离所述第二轴向密封面的一端设有第二轴向止动部件，并该第二轴向止动部件设有连通第三轴向孔与所述上腔的第二轴向通孔。 Preferably, the third branch includes a second axial hole communicating with one end of the vertical pipe, and the other end of the second axial hole communicates with a third axial hole having a larger diameter; a second axial sealing surface is disposed between the hole and the third axial hole, and a second axial sealing body sealing the second axial sealing surface is disposed in the third axial hole; the third axial hole a second axial stopping member is disposed at one end away from the second axial sealing surface, and the second axial stopping member is provided with a second axial through hole communicating with the third axial hole and the upper cavity .

优选地，所述活塞进一步开设有斜孔，所述第二轴向孔通过所述斜孔与所述竖接管一端连通。 Preferably, the piston is further provided with an inclined hole, and the second axial hole communicates with one end of the vertical pipe through the inclined hole.

在现有技术的基础上，本发明所提供的双向电磁阀的活塞的周向侧壁与相对应的所述阀腔的内壁之间具有流通间隙；所述活塞上设有均与所述导阀口连通并可由所述上腔向所述横接管一端单向导通的第一支路、及可由所述上腔向所述竖接管一端单向导通的第二支路；所述活塞上还设有可由所述竖接管一端向所述上腔单向导通的第三支路；所述导阀口和所述第二支路所确定的流通面积大于所述流通间隙的流通面积，所述导阀口和所述第一支路所确定的流通面积大于所述第三支路的流通面积。 On the basis of the prior art, the circumferential side wall of the piston of the two-way electromagnetic valve provided by the present invention has a flow gap between the corresponding inner wall of the valve cavity; the piston is provided with the guide a first branch that communicates with the valve port and can be unidirectionally guided from the upper chamber to one end of the cross tube, and a second branch that can be unidirectionally guided from the upper chamber to the end of the vertical tube; Providing a third branch that can be unidirectionally guided from one end of the vertical pipe to the upper cavity; a flow area determined by the pilot port and the second branch is larger than a flow area of the flow gap, The flow area determined by the pilot port and the first branch is greater than the flow area of the third branch.

双向电磁阀的线圏未通电时，当高压冷媒由横接管进入阀腔的下腔时，第一支路封闭，冷媒通过所述流通间隙进入位于活塞上方的上腔，在高压冷媒和重力的作用下，导阀部件关闭导阀口，此时由于上腔和下腔均为高压端，并由于上腔中活塞的受力面积大于下腔中活塞的受力面积，并由于竖接管一端为低压端，因而在压力差的作用下活塞向下运动，关闭主阀口。当双向电磁阀的线圏通电时，在磁场的作用下，导阀部件开启导阀口，上腔内的高压冷媒通过导阀口和第二支路流入低压的竖接管一端，由于导阀口和第二支路所确定的流通面积大于所述流通间隙的流通面积，因而上腔中的压力下降，形成低压端，而下腔为高压端，活塞在下腔和上腔的压力差的作用下向上运动，开启主阀口，电磁阀开启。线圏断电时，磁场消失，导阀部件复位从而关闭导阀口，此时上腔中的冷媒不再通过导阀口和第二支路流向竖接管一端，因而上腔中的压力上升，直至与横接管一端的高压冷媒的压力相等；此时，活塞上腔和下腔均为高压端，但是上腔中活塞的受力面积大于下腔中活塞的受力面积，并由于竖接管一端为低压端，因而在压力差的作用下，活塞向下运动，关闭主阀口，电磁阀关闭。 When the coil of the two-way solenoid valve is not energized, when the high pressure refrigerant enters the lower chamber of the valve chamber by the cross tube, the first branch is closed, and the refrigerant enters the upper chamber above the piston through the flow gap, in the high pressure refrigerant and gravity Under the action, the pilot valve member closes the pilot valve port. At this time, since the upper chamber and the lower chamber are both high pressure ends, and because the force receiving area of the piston in the upper chamber is larger than the force receiving area of the piston in the lower chamber, and because one end of the vertical tube is At the low pressure end, the piston moves downward under the pressure difference, Close the main valve port. When the coil of the two-way solenoid valve is energized, under the action of the magnetic field, the pilot valve member opens the pilot valve port, and the high-pressure refrigerant in the upper chamber flows into the low-pressure vertical pipe through the pilot valve port and the second branch, due to the pilot port The flow area determined by the second branch is larger than the flow area of the flow gap, so that the pressure in the upper chamber is lowered to form a low pressure end, and the lower chamber is a high pressure end, and the piston is under the pressure difference between the lower chamber and the upper chamber. Move up, open the main valve port, and open the solenoid valve. When the wire is cut off, the magnetic field disappears, and the pilot valve member is reset to close the pilot port. At this time, the refrigerant in the upper chamber no longer flows through the pilot port and the second branch to the end of the vertical pipe, so the pressure in the upper chamber rises. Until the pressure of the high-pressure refrigerant at one end of the cross-over pipe is equal; at this time, the upper chamber and the lower chamber of the piston are both high-pressure ends, but the force-receiving area of the piston in the upper chamber is larger than the force-receiving area of the piston in the lower chamber, and It is the low pressure end, so under the action of the pressure difference, the piston moves downward, the main valve port is closed, and the solenoid valve is closed.

双向电磁阀的线圏未通电时，当高压冷媒由竖接管一端进入时，第二支路关闭，高压冷媒通过第三支路进入上腔，此时导阀部件在高压冷媒和重力的作用下关闭导阀口，上腔和竖接管一端均为高压端，但是由于上腔中活塞的受力面积大于竖接管一端主阀口所确定的活塞的受力面积，并由于横接管一端和下腔为氏压端，因而在压力差的作用下，活塞关闭主阀口，电磁阀关闭。当所述线圏通电时，在磁场的作用下，导阀部件开启导阀口，上腔中的高压冷媒通过导阀口和第一支路流向低压的横接管一端，由于导阀口和第一支路所确定的流通面积大于第三支路的流通面积，因而上腔中的压力下降，称为低压端，此时在压力差的作用下，活塞向上运动，开启主阀口，电磁阀打开。当线圏断电时，磁场消失，导阀部件复位从而关闭导阀口，此时上腔中的高压冷媒不能再通过导阀口和第一支路流向低压的横接管一端，因而压力上升，形成与竖接管一端相等的高压端，但是由于上腔中活塞的受力面积大于竖接管一端主阀口所确定的活塞的受力面积，并由于横接管一端和下腔为氏压端，因而在压力差的作用下，活塞关闭主阀口，电磁阀关闭。 When the coil of the two-way solenoid valve is not energized, when the high-pressure refrigerant enters from one end of the vertical pipe, the second branch is closed, and the high-pressure refrigerant enters the upper chamber through the third branch, and the pilot valve member is under the action of high-pressure refrigerant and gravity. Close the pilot port, the upper chamber and the vertical tube are both high-pressure ends, but the force-receiving area of the piston in the upper chamber is larger than the force-receiving area of the piston determined by the main valve port at one end of the vertical tube, and due to the cross-section of the tube and the lower chamber It is the end of the pressure, so under the action of the pressure difference, the piston closes the main valve port and the solenoid valve closes. When the wire is energized, under the action of the magnetic field, the pilot valve member opens the pilot valve port, and the high pressure refrigerant in the upper chamber flows through the pilot valve port and the first branch to the low pressure cross pipe end, due to the pilot port and the first The flow area determined by one road is larger than the flow area of the third branch, so the pressure in the upper chamber is lowered, which is called the low pressure end. At this time, under the action of the pressure difference, the piston moves upward, opening the main valve port, and the solenoid valve turn on. When the wire is cut off, the magnetic field disappears, and the pilot valve member is reset to close the pilot port. At this time, the high pressure refrigerant in the upper chamber can no longer flow through the pilot port and the first branch to one end of the low pressure cross pipe, so the pressure rises. Forming a high pressure end equal to one end of the vertical pipe, but since the force receiving area of the piston in the upper chamber is larger than the force receiving area of the piston determined by the main valve port at one end of the vertical pipe, and because the one end and the lower cavity of the cross pipe are the end of the pipe, Under the action of the pressure difference, the piston closes the main valve port and the solenoid valve closes.

相对于现有技术两个导阀口和两个逆止阀的结构设计，本发明双向电磁阀的仅设有一个导阀口和导阀部件，因而减少了零部件的数量，筒化了装配工艺；此外，由于本发明没有采用两个逆止阀的结构设计，因而也就省却了支持体的结构，进而也省却了在支持体设置防止其转动的两个定位杆的结构，相应地，活塞上也就省却了两个定位孔的结构，因而不仅减少了零部件的数量，而且降低了加工难度和装配难度；由于本发明的双向电磁阀的零部件较少，装配工艺的难度降低，因而其工作的可靠性相应地得以提高。综上所述，本发明所提供的双向电磁阀一方面能够显著减少零部件的数量，筒化装配工艺，降低制造成本，另一方面能够提高工作的可靠性。此外，需要强调的是，所述第一支路包括径向管路，该径向管路内设有径向密封面及与该径向密封面配合的径向密封体；所述径向管路内还设有使得所述径向密封体沿所述活塞的径向移动的导向座，并该导向座上设有连通所述横接管一端与所述径向管路的导向座通道。 Compared with the prior art two pilot valve ports and two check valves, the two-way solenoid valve of the present invention is provided with only one pilot valve port and pilot valve member, thereby reducing the number of components, the cylinder In addition, since the invention does not adopt the structural design of the two check valves, the structure of the support body is omitted, and the structure of the two positioning rods for preventing the rotation of the support body is also eliminated. Correspondingly, the structure of the two positioning holes is omitted on the piston, thereby not only reducing the number of components, but also reducing the processing difficulty and assembly difficulty; since the two-way solenoid valve of the invention has fewer components, the assembly process The difficulty is reduced, and the reliability of the work is correspondingly improved. In summary, the two-way electromagnetic valve provided by the invention can significantly reduce the number of components, the assembly process, reduce the manufacturing cost, and improve the reliability of the work. In addition, it should be emphasized that the first branch includes a radial pipeline, and the radial pipeline is provided with a radial sealing surface and a radial sealing body matched with the radial sealing surface; A guide seat for moving the radial sealing body along the radial direction of the piston is further disposed in the road, and the guide seat is provided with a guide seat passage connecting one end of the transverse pipe and the radial pipe.

工作时，在第一支路中，当径向密封体开启径向密封面时，通过导向座通道，使得上腔通过径向管路与横接管一端单向导通，当径向密封体关闭径向密封面时，第一支路关闭。在上述结构中，由于导向座对径向密封体进行径向导向支撑，使其沿着活塞的径向移动，因而能够避免径向密封体在重力的作用向下偏移，进而避免了径向密封体对径向密封面密封不严情况的出现，提高了密封性能，防止泄漏的发生，从而提高了制冷设备的整体能效。 In operation, in the first branch, when the radial sealing body opens the radial sealing surface, through the guiding seat passage, the upper chamber passes through the radial pipeline and the end of the transverse pipe is single-passed, when the radial sealing body closes the diameter When the sealing surface is facing, the first branch is closed. In the above structure, since the guide seat radially guides the radial sealing body to move along the radial direction of the piston, it is possible to avoid the downward displacement of the radial sealing body by the action of gravity, thereby avoiding the radial direction. The appearance of the sealing body on the radial sealing surface is not strict, the sealing performance is improved, the leakage is prevented, and the overall energy efficiency of the refrigeration equipment is improved.

附图说明 DRAWINGS

图 1为现有技术中一种双向电磁阀的结构示意图； 1 is a schematic structural view of a two-way electromagnetic valve in the prior art;

图 2为图 1中双向电磁阀的第一逆止阀和第二逆止阀的结构示意图；图 3为图 1中双向电磁阀的活塞、第一逆止阀和第二逆止阀构成的局部结构示意图； Figure 2 is a schematic view showing the structure of the first check valve and the second check valve of the two-way solenoid valve of Figure 1; Figure 3 is a view of the piston of the two-way solenoid valve of Figure 1, the first check valve and the second check valve Schematic diagram of local structure;

图 4为本发明一种实施例中双向电磁阀的结构示意图； 4 is a schematic structural view of a two-way electromagnetic valve according to an embodiment of the present invention;

图 5为图 4中双向电磁阀的活塞的结构示意图；图 6为图 5中活塞的主视平面图； Figure 5 is a schematic structural view of the piston of the two-way solenoid valve of Figure 4; Figure 6 is a front plan view of the piston of Figure 5;

图 7为图 5中活塞的圓筒的结构示意图； Figure 7 is a schematic view showing the structure of the cylinder of the piston of Figure 5;

图 8为本发明另一种实施例中双向电磁阀的结构示意图。 FIG. 8 is a schematic structural view of a two-way electromagnetic valve according to another embodiment of the present invention.

其中，图 1至图 3中附图标记与部件名称之间的对应关系为： Γ阀座； 1Ί主阀口； 1'2上腔； Γ3下腔； Wherein, the correspondence between the reference numerals and the component names in FIGS. 1 to 3 is: Γ valve seat; 1 Ί main valve port; 1 '2 upper cavity; Γ 3 lower cavity;

2'活塞； 2'1第一导阀口； 2'2第二导阀口； 2'3平衡孔； 2'4单向阀芯； 2' piston; 2'1 first pilot port; 2'2 second pilot port; 2'3 balance hole; 2'4 check valve;

3'2横接管； 3 竖接管； 3'2 cross tube; 3 vertical tube;

4Ί套管； 4'2动铁芯； 4'3静铁芯； 4'4线圏； 4Ί casing; 4'2 moving iron core; 4'3 static iron core; 4'4 wire 圏;

5'支持体； 5Ί第一逆止阀； 5'2第二逆止阀； 5'3定位杆。 5' support; 5Ί first check valve; 5'2 second check valve; 5'3 positioning rod.

图 4至图 8中附图标记与部件名称之间的对应关系为： The correspondence between the reference numerals and the part names in Figures 4 to 8 is:

1阀座； 11主阀口； 12上腔； 13下腔； 14流通间隙； 15阀座导向段； 16环形凹槽； 1 valve seat; 11 main valve port; 12 upper chamber; 13 lower chamber; 14 flow gap; 15 valve seat guide section; 16 annular groove;

2活塞； 21导阀口； 22导阀通道； 26铆接部； 27活塞导向段； 28 管路安装段； 29台阶； 2 piston; 21 pilot valve port; 22 pilot valve passage; 26 rivet joint; 27 piston guide section; 28 pipeline installation section;

231第一径向孔； 232第二径向孔； 233径向密封面； 234径向密封体； 235圓筒； 235a筒内腔； 235b筒缺口； 235c流通间隙； 231 first radial hole; 232 second radial hole; 233 radial sealing surface; 234 radial sealing body; 235 cylinder; 235a cylinder cavity; 235b cylinder notch; 235c flow gap;

241轴向腔体； 242第一轴向密封面； 243第一轴向止动部件； 243a 第一轴向通孔； 244单向阀芯； 244a阀芯径向孔； 244b阀芯轴向孔； 245 第一轴向孔； 241 axial cavity; 242 first axial sealing surface; 243 first axial stopping member; 243a first axial through hole; 244 one-way spool; 244a spool radial hole; 244b spool axial hole ; 245 first axial hole;

251斜孔； 252第二轴向孔； 253第三轴向孔； 254第二轴向密封面； 251 oblique hole; 252 second axial hole; 253 third axial hole; 254 second axial sealing surface;

255第二轴向密封体； 256第二轴向止动部件； 256a第二轴向通孔； 31横接管； 32竖接管； 255 second axial sealing body; 256 second axial stopping member; 256a second axial through hole; 31 transverse pipe; 32 vertical pipe;

41套管； 42动铁芯； 43导阀密封件； 44弹性部件； 45静铁芯； 5弹性元件。具体实施方式 41 casing; 42 moving iron core; 43 pilot valve seal; 44 elastic parts; 45 static iron core; 5 elastic elements. detailed description

本发明的核心为提供一种双向电磁阀，该双向电磁阀的结构设计一方面能够显著减少零部件的数量，筒化装配工艺，降低制造成本，另一方面能够提高工作的可靠性。 The core of the present invention is to provide a two-way electromagnetic valve, and the structural design of the two-way electromagnetic valve can significantly reduce the number of components, the assembly process, and the manufacturing cost, and the other Aspects can improve the reliability of work.

为了使本领域的技术人员更好地理解本发明的技术方案，下面结合附图和具体实施例对本发明作进一步的详细说明。 In order to make those skilled in the art better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

请参考图 4、图 5和图 6, 图 4为本发明一种实施例中双向电磁阀的结构示意图；图 5为图 4中双向电磁阀的活塞的结构示意图；图 6为图 5中活塞的主视平面图。 Please refer to FIG. 4, FIG. 5 and FIG. 6. FIG. 4 is a schematic structural view of a two-way electromagnetic valve according to an embodiment of the present invention; FIG. 5 is a schematic structural view of a piston of the two-way electromagnetic valve of FIG. The main view of the floor plan.

在一种实施例中，如图 4所示，本发明所提供的双向电磁阀，包括阀座 1 , 该阀座 1设有阀腔，阀腔中形成有主阀口 11 , 并且阀腔中设有关闭或开启主阀口 11的活塞 2; 如图 4所示，活塞 2分隔阀腔为位于活塞 2上方的上腔 12和位于活塞 2下方的下腔 13 , 并且，在上腔 12中，活塞 2的上端部设有导阀口 21 , 该导阀口 21由双向电磁阀的导阀部件开启或关闭；如图 4所示，所述双向电磁阀还包括横接管 31和竖接管 32, 横接管 31与下腔 13连通，竖接管 32与主阀口 11连通，并在主阀口 11开启时与下腔 13连通。 In one embodiment, as shown in FIG. 4, the two-way electromagnetic valve provided by the present invention comprises a valve seat 1, the valve seat 1 is provided with a valve cavity, a main valve port 11 is formed in the valve cavity, and the valve cavity is A piston 2 is provided which closes or opens the main valve port 11; as shown in Fig. 4, the piston 2 separates the valve chamber into an upper chamber 12 above the piston 2 and a lower chamber 13 below the piston 2, and in the upper chamber 12 The upper end portion of the piston 2 is provided with a pilot valve port 21 which is opened or closed by a pilot valve member of the two-way solenoid valve; as shown in FIG. 4, the two-way solenoid valve further includes a cross tube 31 and a vertical tube 32. The cross pipe 31 communicates with the lower chamber 13, and the vertical pipe 32 communicates with the main valve port 11 and communicates with the lower chamber 13 when the main valve port 11 is opened.

如图 4至图 6所示，在现有技术的基础上，活塞 2的周向侧壁与相对应的所述阀腔的内壁之间具有流通间隙 14; 活塞 2上设有均与导阀口 21连通的第一支路和第二支路，并且导阀口 21开启时，第一支路由上腔 12向横接管 31—端单向导通（亦即冷媒可通过该第一支路由上腔 12 流向横接管 31—端，而不能由横接管 31—端流向上腔 12 ), 第二支路由上腔 12向竖接管 32—端导向导通（亦即冷媒可通过该第二支路由上腔 12流向竖接管 32—端，而不能由竖接管 32—端流向上腔 12 ); 如图 4和图 5所示，活塞 2上还设有可由竖接管 32—端向上腔 12单向导通的第三支路（亦即冷媒可以通过该第三支路由竖接管 32 —端流向上腔 12, 而不能由上腔 12流向竖接管 32—端）；同时，导阀口 21和所述第二支路所确定的流通面积大于流通间隙 14的流通面积，导阀口 21和所述第一支路所确定的流通面积大于所述第三支路的流通面积。 As shown in FIG. 4 to FIG. 6 , on the basis of the prior art, there is a flow gap 14 between the circumferential side wall of the piston 2 and the corresponding inner wall of the valve chamber; and the piston 2 is provided with a pilot valve When the first branch and the second branch of the port 21 are connected, and the pilot port 21 is opened, the first branch of the upper chamber 12 is routed to the end of the cross tube 31 (ie, the refrigerant can pass through the first branch) The cavity 12 flows to the end of the cross pipe 31, but not to the end of the cross pipe 31, and the second pipe leads the upper chamber 12 to the end of the vertical pipe 32 (that is, the refrigerant can pass through the second branch) The upper chamber 12 flows to the end of the vertical pipe 32, but not to the upper chamber 12 by the vertical pipe 32; as shown in Fig. 4 and Fig. 5, the piston 2 is further provided with a single guide which can be connected from the vertical pipe 32 to the upper cavity 12 The third branch (ie, the refrigerant can flow through the third branch to the upper chamber 12 through the third branch, but not from the upper chamber 12 to the end of the vertical tube 32); at the same time, the pilot port 21 and the The flow area determined by the second branch is larger than the flow area of the flow gap 14, the pilot port 21 and the A flow passage area greater than the determined area of the third branch flow.

双向电磁阀的线圏未通电时，当高压冷媒由横接管 31 进入阀腔的下腔 13时，第一支路封闭，冷媒通过所述流通间隙 14进入位于活塞 2 上方的上腔 12, 在高压冷媒和重力的作用下，导阀部件关闭导阀口 21 , 此时由于上腔 12和下腔 13均为高压端，并由于上腔 12中活塞 2的受力面积大于下腔 13中活塞 2的受力面积，并由于竖接管 32—端为低压端，因而在压力差的作用下活塞 2向下运动，关闭主阀口 11。当双向电磁阀的线圏通电时，在磁场的作用下，导阀部件开启导阀口 21 , 上腔 12内的高压冷媒通过导阀口 21和所述第二支路流入低压的竖接管 32—端，由于导阀口 21和第二支路所确定的流通面积大于流通间隙 14的流通面积，因而上腔 12中的压力下降，形成氐压端，而下腔 13为高压端，活塞在下腔 13和上腔 12的压力差的作用下向上运动，开启主阀口 11 , 电磁阀开启。线圏断电时，磁场消失，导阀部件复位从而关闭导阀口 21 , 此时上腔 12中的冷媒不再通过导阀口 21和第二支路流向竖接管 32— 端，因而上腔 12中的压力上升，直至与横接管 31—端的高压冷媒的压力相等；此时，活塞上腔 12和下腔 13均为高压端，但是上腔 12中活塞 2的受力面积大于下腔 13中活塞 2的受力面积，并由于竖接管 32—端为低压端，因而在压力差的作用下，活塞 2向下运动，关闭主阀口 11 , 电磁阀关闭。 When the coil of the two-way solenoid valve is not energized, when the high pressure refrigerant enters the lower chamber 13 of the valve chamber by the cross tube 31, the first branch is closed, and the refrigerant enters the piston 2 through the flow gap 14 The upper upper chamber 12, under the action of high pressure refrigerant and gravity, the pilot valve member closes the pilot valve port 21, at this time, since the upper chamber 12 and the lower chamber 13 are both high pressure ends, and due to the force of the piston 2 in the upper chamber 12. The area is larger than the area of the piston 2 in the lower chamber 13, and since the end of the vertical tube 32 is the low pressure end, the piston 2 moves downward under the pressure difference, and the main valve port 11 is closed. When the coil of the two-way solenoid valve is energized, the pilot valve member opens the pilot valve port 21 under the action of the magnetic field, and the high pressure refrigerant in the upper chamber 12 flows into the low pressure riser tube 32 through the pilot valve port 21 and the second branch. At the end, since the flow area determined by the pilot port 21 and the second branch is larger than the flow area of the flow gap 14, the pressure in the upper chamber 12 is lowered to form a rolling end, and the lower chamber 13 is a high pressure end, and the piston is under The pressure difference between the cavity 13 and the upper chamber 12 is moved upward, the main valve port 11 is opened, and the solenoid valve is opened. When the wire is cut off, the magnetic field disappears, the pilot valve member is reset to close the pilot port 21, and the refrigerant in the upper chamber 12 no longer flows through the pilot port 21 and the second branch to the end of the vertical pipe 32, thus the upper chamber The pressure in 12 rises until it is equal to the pressure of the high pressure refrigerant at the end of the cross pipe 31; at this time, the upper chamber 12 and the lower chamber 13 of the piston are both high pressure ends, but the force area of the piston 2 in the upper chamber 12 is larger than that of the lower chamber 13 The force receiving area of the middle piston 2, and because the end of the vertical pipe 32 is the low pressure end, the piston 2 moves downward under the action of the pressure difference, the main valve port 11 is closed, and the solenoid valve is closed.

双向电磁阀的线圏未通电时，当高压冷媒由竖接管 32—端进入时，第二支路关闭，高压冷媒通过第三支路进入上腔 12, 此时导阀部件在高压冷媒和重力的作用下关闭导阀口 21 ,上腔 12和竖接管 32—端均为高压端，但是由于上腔 12中活塞 2的受力面积大于竖接管 32—端主阀口 11所确定的活塞 2的受力面积，并由于横接管 31—端和下腔 13为低压端，因而在压力差的作用下，活塞 2关闭主阀口 11 , 电磁阀关闭。当线圏通电时，在磁场的作用下，导阀部件开启导阀口 21 , 上腔 12中的高压冷媒通过导阀口 21和第一支路流向低压的横接管 31—端，由于导阀口 21和第一支路所确定的流通面积大于第三支路的流通面积，因而上腔 12中的压力下降，形成低压端，此时在压力差的作用下，活塞 2向上运动，开启主阀口 11 , 电磁阀打开。当线圏断电时，磁场消失，导阀部件复位从而关闭导阀口 21 , 此时上腔 12中的高压冷媒不能再通过导阀口 21和第一支路流向低压的横接管 31—端，因而压力上升，形成与竖接管 32—端相等的高压端，但是由于上腔 12中活塞的受力面积大于竖接管 32—端主阀口 11所确定的活塞 2的受力面积，并由于横接管 31—端和下腔 13为低压端，因而在压力差的作用下，活塞 2关闭主阀口 11 , 电磁阀关闭。 When the coil of the two-way solenoid valve is not energized, when the high pressure refrigerant enters from the end of the vertical pipe 32, the second branch is closed, and the high pressure refrigerant enters the upper chamber 12 through the third branch, and the pilot valve member is in the high pressure refrigerant and gravity. The pilot valve port 21 is closed, and the upper chamber 12 and the vertical tube 32 are both high-pressure ends, but the force receiving area of the piston 2 in the upper chamber 12 is larger than the piston 2 determined by the vertical tube 32-end main valve port 11. The force receiving area, and because the cross pipe 31-end and the lower cavity 13 are low-pressure ends, the piston 2 closes the main valve port 11 under the action of the pressure difference, and the solenoid valve is closed. When the coil is energized, under the action of the magnetic field, the pilot valve member opens the pilot valve port 21, and the high pressure refrigerant in the upper chamber 12 flows through the pilot valve port 21 and the first branch to the low pressure cross pipe 31-end, due to the pilot valve The flow area determined by the port 21 and the first branch is larger than the flow area of the third branch, so that the pressure in the upper chamber 12 is lowered to form a low pressure end. At this time, under the action of the pressure difference, the piston 2 moves upward, opening the main Valve port 11, the solenoid valve is open. When the wire is cut off, the magnetic field disappears, the pilot valve member is reset to close the pilot port 21, and the high pressure refrigerant in the upper chamber 12 can no longer pass through the pilot port. 21 and the first branch flows to the end of the low pressure cross pipe 31, so that the pressure rises to form a high pressure end equal to the end of the riser pipe 32, but since the force receiving area of the piston in the upper chamber 12 is larger than the vertical pipe 32-end main valve The force receiving area of the piston 2 determined by the port 11, and because the cross-over pipe 31-end and the lower chamber 13 are low-pressure ends, the piston 2 closes the main valve port 11 under the action of the pressure difference, and the solenoid valve is closed.

相对于现有技术两个导阀口和两个逆止阀的结构设计，本发明双向电磁阀的仅设有一个导阀口 21和导阀部件，因而减少了零部件的数量，筒化了装配工艺；此外，由于本发明没有采用两个逆止阀的结构设计，因而也就省却了支持体的结构，进而也省却了在支持体设置防止其转动的两个定位杆的结构，相应地，活塞上也就省却了两个定位孔的结构，因而不仅减少了零部件的数量，而且降低了加工难度和装配难度；由于本发明的双向电磁阀的零部件较少，装配工艺的难度降低，因而其工作的可靠性相应地得以提高。 Compared with the structural design of the two pilot valve ports and the two check valves of the prior art, the two-way solenoid valve of the present invention is provided with only one pilot valve port 21 and a pilot valve member, thereby reducing the number of parts and components. Assembly process; In addition, since the invention does not adopt the structural design of the two check valves, the structure of the support body is omitted, and the structure of the two positioning rods for preventing the rotation of the support body is also eliminated, correspondingly The structure of the two positioning holes is also eliminated on the piston, thereby not only reducing the number of components, but also reducing the processing difficulty and assembly difficulty; since the two-way solenoid valve of the invention has fewer components, the assembly process is less difficult. Therefore, the reliability of its work is correspondingly improved.

综上所述，本发明所提供的双向电磁阀一方面能够显著减少零部件的数量，筒化装配工艺，降低制造成本，另一方面能够提高工作的可靠性。 In summary, the two-way electromagnetic valve provided by the invention can significantly reduce the number of components, the assembly process, reduce the manufacturing cost, and improve the reliability of the work.

此外，如图 5和图 6所示，需要着重指出的是，第一支路包括径向管路，该径向管路内设有径向密封面 233及与该径向密封面 233配合的径向密封体 234; 径向管路内还设有使得径向密封体 234沿活塞 2的径向移动的导向座，并该导向座上设有连通横接管 31—端与径向管路的导向座通道。 In addition, as shown in FIG. 5 and FIG. 6, it is important to note that the first branch includes a radial duct, and the radial duct is provided with a radial sealing surface 233 and cooperates with the radial sealing surface 233. a radial sealing body 234; a guiding seat for moving the radial sealing body 234 in the radial direction of the piston 2 is further disposed in the radial pipe, and the guiding seat is provided with a connecting transverse pipe 31-end and a radial pipe Guide seat channel.

工作时，在第一支路中，当径向密封体 234开启径向密封面 233时，通过导向座通道,使得上腔 12通过径向管路与横接管 31—端单向导通，当径向密封体 234关闭径向密封面 233时，第一支路关闭。在上述结构中，由于导向座对径向密封体 234进行径向导向支撑，使其沿着活塞 2 的径向移动，因而能够避免径向密封体 234在重力的作用向下偏移，进而避免了径向密封体 234对径向密封面 233密封不严情况的出现，提高了密封性能，防止泄漏的发生，从而提高了制冷设备的整体能效。在上述实施例中，可以对导阀部件作出具体设计。如图 4所示，导阀部件包括套管 41、动铁芯 42、导阀密封件 43、弹性部件 44、静铁芯 45; 套管 41连接于阀座 1上，动铁芯 42的一端设有开启或关闭导阀口的导阀密封件 43 ,其另一端通过弹性部件 44与静铁芯 45连接，套管 41 的外部设有线圏（未示出）。当线圏通电时，在磁场的作用下，动铁芯 42克服弹性部件 44的弹力，向静铁芯 45—端运动，从而带动导阀密封件 43开启导阀口 21；当线圏断电时，磁场消失，此时在弹性部件 44的弹力的作用下，动铁芯 42复位，进而带动导阀密封件 43关闭导阀口 21。 In operation, in the first branch, when the radial sealing body 234 opens the radial sealing surface 233, through the guiding seat passage, the upper chamber 12 is unidirectionally guided through the radial pipe and the transverse pipe 31. When the radial sealing surface 233 is closed to the sealing body 234, the first branch is closed. In the above structure, since the guide seat radially guides the radial sealing body 234 to move along the radial direction of the piston 2, it is possible to prevent the radial sealing body 234 from being displaced downward by the action of gravity, thereby avoiding The appearance of the radial sealing body 234 sealing the radial sealing surface 233 is not strict, the sealing performance is improved, leakage is prevented, and the overall energy efficiency of the refrigeration equipment is improved. In the above embodiment, a specific design of the pilot valve member can be made. As shown in FIG. 4, the pilot valve member includes a sleeve 41, a movable iron core 42, a pilot valve seal 43, an elastic member 44, and a static iron core 45. The sleeve 41 is coupled to the valve seat 1, and one end of the movable iron core 42 A pilot valve seal 43 is provided which opens or closes the pilot valve port, the other end of which is connected to the static iron core 45 via an elastic member 44, and a sleeve (not shown) is provided on the outside of the sleeve 41. When the coil is energized, under the action of the magnetic field, the movable iron core 42 overcomes the elastic force of the elastic member 44 and moves toward the end of the static iron core 45, thereby driving the pilot valve seal 43 to open the pilot valve port 21; At this time, the magnetic field disappears. At this time, under the action of the elastic force of the elastic member 44, the movable iron core 42 is reset, and the pilot valve seal 43 is caused to close the pilot valve port 21.

在上述实施例中，为了便于导阀口 21 与所述第一支路和所述第二支路连通，活塞 2上可以进一步沿轴向设有与导阀口 21连通的导阀通道 22, 导阀口 21通过该导阀通道 22分别与所述第一支路和所述第二支路连通。 In the above embodiment, in order to facilitate communication between the pilot port 21 and the first branch and the second branch, the piston 2 may further be provided with a pilot passage 22 communicating with the pilot port 21 in the axial direction. The pilot valve port 21 communicates with the first branch and the second branch through the pilot valve passage 22, respectively.

具体地，在上述技术方案中，还可以对第一支路的径向管路作出具体设计。如图 5和图 6所示，径向管路包括第一径向孔 231及孔径变大的第二径向孔 232, 径向密封面 233形成于第一径向孔 231与第二径向孔 232之间的台阶上；导向座设于第二径向孔 232中，并导向支撑径向密封体 234沿活塞 2的径向移动，以便密封或脱离径向密封面 233。在该种结构中，通过第一径向孔 231及孔径变大的第二径向孔 232之间的台阶，可以方便地设计径向密封面 233 , 同时结构也比较筒单，加工成本较低。 Specifically, in the above technical solution, the radial design of the first branch can also be specifically designed. As shown in FIG. 5 and FIG. 6, the radial pipe includes a first radial hole 231 and a second radial hole 232 having a larger diameter. The radial sealing surface 233 is formed in the first radial hole 231 and the second radial direction. A step is formed between the holes 232; the guide seat is disposed in the second radial hole 232 and guides to support the radial sealing body 234 to move in the radial direction of the piston 2 to seal or disengage the radial sealing surface 233. In this configuration, the radial sealing surface 233 can be conveniently designed by the step between the first radial hole 231 and the second radial hole 232 whose diameter is enlarged, and the structure is also relatively simple, and the processing cost is low. .

需要说明的是，任一种导向座结构，只要能够对径向密封体 234进行径向导向，同时在径向密封体 234开启径向密封面 233时，能够通过导向座通道导通径向管路，就均应该在本发明的保护范围之内。 It should be noted that any guide seat structure can guide the radial tube through the guide seat channel as long as the radial sealing body 234 can be radially guided while the radial sealing body 234 opens the radial sealing surface 233. The road should be within the scope of the present invention.

当然，作为一种举例，可以具体设计一种导向座结构，比如请同时参考图 5、图 6和图 7, 导向座为一端设有开口的圓筒 235 , 径向密封体 234设于圓筒 235的筒内腔 235a中，圓筒 235以其开口正对径向密封面 233 , 以便径向密封体 234开启或关闭径向密封面 233; 导向座通道为开设于圓筒 235的周向侧壁上并连通筒内腔 235a与第二径向孔 232的筒缺口 235b。 As an example, a guide seat structure may be specifically designed. For example, please refer to FIG. 5, FIG. 6 and FIG. 7. The guide seat is a cylinder 235 having an opening at one end, and the radial seal body 234 is disposed on the cylinder. In the barrel lumen 235a of 235, the cylinder 235 faces the radial sealing surface 233 with its opening so that the radial sealing body 234 opens or closes the radial sealing surface 233; the guiding seat passage is opened on the circumferential side of the cylinder 235 a tube on the wall and communicating with the barrel inner cavity 235a and the second radial hole 232 Port 235b.

在上述结构中，如图 5和图 6所示，径向密封体 234通过圓筒 235 的开口放入其筒内腔 235a中，通过该筒内腔 235a能够较好地对径向密封体 234进行径向导向。此外，该圓筒 235的开口正对径向密封面 233 , 径向密封体 234在筒内腔 235a中向靠近径向密封面 233的方向移动，便可密封该径向密封面 233 , 远离该径向密封面 233运动，便可开启该径向密封面 233。再者，如图 7所示，导向座通道为开设于圓筒 235的周向侧壁上并连通筒内腔 235a与第二径向孔 232的筒缺口 235b, 当径向密封体 234脱离开启径向密封面 233时，横接管 31一端通过第二径向孔 232、筒缺口 235b、筒内腔 235a以及径向密封面 233与第一径向孔 231 连通，从而实现了径向管路的导通，进而实现了第一支路的导通。综上，圓筒 235的结构设计一方面能够对径向密封体 234进行径向导向，另一方面能够方便导通径向管路。 In the above structure, as shown in Figs. 5 and 6, the radial sealing body 234 is inserted into the cylindrical cavity 235a through the opening of the cylinder 235, through which the radial sealing body 234 can be better aligned. Perform radial guidance. In addition, the opening of the cylinder 235 faces the radial sealing surface 233, and the radial sealing body 234 moves in the direction of the radial sealing surface 233 in the cylinder cavity 235a, thereby sealing the radial sealing surface 233 away from the The radial sealing surface 233 is moved to open the radial sealing surface 233. Furthermore, as shown in FIG. 7, the guide seat passage is a cylindrical notch 235b which is opened on the circumferential side wall of the cylinder 235 and communicates the cylindrical cavity 235a and the second radial hole 232, when the radial sealing body 234 is disengaged. When the radial sealing surface 233 is radial, one end of the transverse pipe 31 communicates with the first radial hole 231 through the second radial hole 232, the cylindrical notch 235b, the cylindrical cavity 235a and the radial sealing surface 233, thereby realizing the radial pipeline. Turning on, and then achieving the conduction of the first branch. In summary, the structural design of the cylinder 235 is capable of radially guiding the radial sealing body 234 on the one hand and facilitating the conduction of the radial piping on the other hand.

此外，如图 5至图 7所示，筒缺口 235b进一步延伸至圓筒 235的底部密封端，以便该圓筒 235的底部密封端与第二径向孔 232的内壁之间具有导通间隙 235c。横接管一端通过该导通间隙 235c与第二径向孔 232连通，进而与筒缺口 235b连通。再者，圓筒 235以其周向侧壁过盈配合于第二径向孔 232中，该种装配结构筒单可靠性，并且成本较低。 Further, as shown in FIGS. 5 to 7, the barrel notch 235b further extends to the bottom sealed end of the cylinder 235 such that the bottom sealing end of the cylinder 235 and the inner wall of the second radial hole 232 have a conduction gap 235c. . One end of the traverse tube communicates with the second radial hole 232 through the conduction gap 235c, and further communicates with the barrel notch 235b. Moreover, the cylinder 235 is interference-fitted into the second radial bore 232 with its circumferential side wall, which is simple in reliability and low in cost.

此外，在上述实施例中，还可以对第二支路作出具体设计。比如，如图 5所示，所述第二支路包括与导阀通道 22连通的轴向腔体 241 , 该轴向腔体 241与导阀通道 22之间设有第一轴向密封面 242,轴向腔体 241 内设有密封该第一轴向密封面 242的第一轴向密封体；轴向腔体 241远离第一轴向密封面 242的一端设有第一轴向止动部件 243 , 且该第一轴向止动部件 243设有连通轴向腔体 241与竖接管 32—端的第一轴向通孔 243a。 Further, in the above embodiment, it is also possible to make a specific design for the second branch. For example, as shown in FIG. 5, the second branch includes an axial cavity 241 communicating with the pilot passage 22, and a first axial sealing surface 242 is disposed between the axial cavity 241 and the pilot passage 22. a first axial sealing body sealing the first axial sealing surface 242 is disposed in the axial cavity 241; a first axial stopping component is disposed at an end of the axial cavity 241 away from the first axial sealing surface 242 243, and the first axial stopping member 243 is provided with a first axial through hole 243a that communicates with the axial cavity 241 and the end of the vertical pipe 32.

具体地，如图 5所示，该第一轴向密封体可以为单向阀芯 244, 单向阀芯 244设有相互连通的阀芯径向孔 244a和阀芯轴向孔 244b, 阀芯径向孔 244a与轴向腔体 241连通，阀芯轴向孔 244b与第一轴向通孔 243a 连通。工作时，高压冷媒由导阀口 21进入导阀通道 22内，然后沖开单向阀芯 244对第一轴向密封面 242的密封，进入轴向腔体 241内，然后高压冷媒经过阀芯径向孔 244a和阀芯轴向孔 244b, 再通过第一轴向止动部件 243的第一轴向通孔 243a进入竖接管 32—端。 Specifically, as shown in FIG. 5, the first axial sealing body may be a one-way spool 244, and the one-way spool 244 is provided with a spool radial hole 244a and a spool axial hole 244b communicating with each other, the spool The radial hole 244a is in communication with the axial cavity 241, the spool axial hole 244b and the first axial through hole 243a Connected. During operation, the high pressure refrigerant enters the pilot valve passage 22 from the pilot valve port 21, and then seals the first axial sealing surface 242 of the one-way spool 244 into the axial cavity 241, and then the high pressure refrigerant passes through the spool. The radial bore 244a and the spool axial bore 244b are then passed through the first axial through bore 243a of the first axial stop member 243 into the end of the riser tube 32.

具体地，如图 5所示，为了提高第一轴向止动部件 243连接的可靠性，轴向腔体 241远离第一轴向密封面 242的一端可以连接有孔径变大的第一轴向孔 245 , 活塞 2设有铆接部 26, 第一轴向止动部件 243通过铆接部 26铆接于第一轴向孔 245中。 Specifically, as shown in FIG. 5, in order to improve the reliability of the connection of the first axial stopping member 243, one end of the axial cavity 241 away from the first axial sealing surface 242 may be connected with a first axial direction having a larger opening diameter. The hole 245 and the piston 2 are provided with a rivet portion 26, and the first axial stopper member 243 is riveted into the first axial hole 245 by the rivet portion 26.

再者，需要说明的是，在上述实施例中，无论何种结构的第三支路，只要能够由竖接管 32—端向上腔 12单向导通，就均应该在本发明的保护范围之内。 Furthermore, it should be noted that, in the above embodiment, the third branch of any structure should be within the protection scope of the present invention as long as it can be single-passed from the vertical pipe 32 to the upper cavity 12. .

具体地，可以具体设计一种第三支路结构。比如，如图 5所示，所述第三支路包括第二轴向孔 252和第三轴向孔 253 , 第二轴向孔 252的一端与竖接管 32—端连通，其另一端与第三轴向孔 253连通，并该第三轴向孔 253的孔径大于第二轴向孔 252的孔径；此外，如图 5所示，第二轴向孔 252与第三轴向孔 253之间设有第二轴向密封面 254, 并第三轴向孔 253中设有密封该第二轴向密封面 254的第二轴向密封体 255 , 该第二轴向密封体 255可以密封球体；再者，如图 5所示，第三轴向孔 253远离第二轴向密封面 254的一端设有第二轴向止动部件 256,并该第二轴向止动部件 256设有连通第三轴向孔 253与上腔 12的第二轴向通孔 256a。 Specifically, a third branch structure can be specifically designed. For example, as shown in FIG. 5, the third branch includes a second axial hole 252 and a third axial hole 253. One end of the second axial hole 252 is connected to the end of the vertical pipe 32, and the other end is The three axial holes 253 are in communication, and the diameter of the third axial hole 253 is larger than the diameter of the second axial hole 252; further, as shown in FIG. 5, between the second axial hole 252 and the third axial hole 253 a second axial sealing surface 254 is disposed, and a second axial sealing body 255 is disposed in the third axial hole 253 for sealing the second axial sealing surface 254. The second axial sealing body 255 can seal the spherical body; Furthermore, as shown in FIG. 5, a second axial stop member 256 is disposed at one end of the third axial hole 253 away from the second axial sealing surface 254, and the second axial stop member 256 is provided with a communication first. The three axial holes 253 and the second axial through holes 256a of the upper chamber 12.

具体地，如图 4和图 5所示，为了便于第二轴向孔 252与竖接管 32 一端连通，活塞 2可以进一步设有斜孔 251 , 第二轴向孔 252通过可以斜孔 251与竖接管 32—端连通。 Specifically, as shown in FIG. 4 and FIG. 5, in order to facilitate the communication of the second axial hole 252 with one end of the vertical pipe 32, the piston 2 may further be provided with an inclined hole 251, and the second axial hole 252 may pass through the inclined hole 251 and the vertical Take the 32-end connection.

工作时，如图 4和图 5所示，高压冷媒由竖接管 32—端进入斜孔 When working, as shown in Fig. 4 and Fig. 5, the high pressure refrigerant enters the inclined hole from the end of the vertical pipe 32

251中，并沖开第二轴向密封体 255对第二轴向密封面 254的密封，进入第二轴向孔 252中，进而通过第二轴向止动部件 256的第二轴向通孔 256a进入上腔 12中。此外，在上述任一种技术方案的基础上，还可以作出进一步改进。具体地，请参考图 8 , 图 8为本发明另一种实施例中双向电磁阀的结构示意图。 251, and punching the second axial sealing body 255 to seal the second axial sealing surface 254, entering the second axial hole 252, and further passing through the second axial through hole of the second axial stopping member 256 256a enters the upper chamber 12. In addition, based on any of the above technical solutions, further improvements can be made. Specifically, please refer to FIG. 8. FIG. 8 is a schematic structural diagram of a two-way electromagnetic valve according to another embodiment of the present invention.

如图 8所示，阀座 1的内壁上设有阀座导向段 15 , 活塞 2的圓周外壁上设有与阀座导向段 15配合的活塞导向段 27; 活塞导向段 27的下方开设有外径变小的管路安装段 28 , 第一支路包括径向管路，径向管路开设于管路安装段 28上；阀座导向段 15的下部进一步开设有环形凹槽 16, 并活塞开启主阀口时，径向管路整体处于环形凹槽 16所正对的范围内。 As shown in FIG. 8, the inner wall of the valve seat 1 is provided with a valve seat guiding section 15, and the outer circumferential wall of the piston 2 is provided with a piston guiding section 27 which cooperates with the valve seat guiding section 15; the piston guiding section 27 is opened below the piston guiding section 27. The pipe installation section 28 has a small diameter, the first branch includes a radial pipeline, and the radial pipeline is opened on the pipeline installation section 28; the lower part of the valve seat guiding section 15 is further provided with an annular groove 16, and the piston When the main valve port is opened, the radial line as a whole is in the range in which the annular groove 16 faces.

具体地， "径向管路整体处于环形凹槽 16所正对的范围内" 的具体涵义如下： Specifically, the specific meaning of "the radial pipe as a whole is in the range in which the annular groove 16 is facing" is as follows:

如图 8所示，当活塞 2开启主阀口 11时，活塞 2向上移动，相应地，径向管路 (包括第一径向孔 231和第二径向孔 232 )也向上移动，该径向管路并不越过环形凹槽 16的最上端，亦即该环形凹槽 16的最上端始终高于径向管路的最上端。 As shown in FIG. 8, when the piston 2 opens the main valve port 11, the piston 2 moves upward, and accordingly, the radial pipe (including the first radial hole 231 and the second radial hole 232) also moves upward. The line does not pass over the uppermost end of the annular groove 16, i.e., the uppermost end of the annular groove 16 is always higher than the uppermost end of the radial pipe.

活塞 2开启主阀口 11时，在冷媒流体的推动下，活塞 2会发生周向转动，此时，有可能使得径向管路的转到图 8中的左侧，亦即远离横接管 31的一侧，此时，径向管路的出口端会由于空间狭窄，导致该部位的冷媒压力增大，从而使得径向管路中的径向密封体 234会再次关闭径向密封面 233 , 进而使得活塞 2在轴向上发生振动，产生振动噪音，同时也不利于流量的稳定性。 When the piston 2 opens the main valve port 11, the piston 2 will rotate circumferentially under the push of the refrigerant fluid. At this time, it is possible to turn the radial pipe to the left side in FIG. 8, that is, away from the cross pipe 31. On one side, at this time, the outlet end of the radial pipe may increase the pressure of the refrigerant at the portion due to the narrow space, so that the radial sealing body 234 in the radial pipe will close the radial sealing surface 233 again. Further, the piston 2 vibrates in the axial direction, generating vibration noise, and is also disadvantageous for flow stability.

而在本发明中，由于径向管路整体处于环形凹槽 16 所正对的范围内，因而当活塞 2发生转动，使得径向管路的转到远离横接管 31的一侧时，由于此时径向管路的开口端仍然对应着环形凹槽 16, 该部位的空间足够大，能够便于冷媒发生流动，从而能够避免局部高压的出现，进而避免径向密封体 234会再次关闭径向密封面 233 , 从而能够防止活塞 2 发生振动，并保证了流量的稳定性。 In the present invention, since the radial pipe is entirely in the range in which the annular groove 16 is opposed, when the piston 2 is rotated so that the radial pipe is turned to the side away from the transverse pipe 31, The open end of the radial pipe still corresponds to the annular groove 16, and the space of the portion is large enough to facilitate the flow of the refrigerant, thereby avoiding the occurrence of local high pressure, thereby preventing the radial sealing body 234 from closing the radial seal again. The surface 233 can prevent the piston 2 from vibrating and ensure the stability of the flow rate.

此外，如图 8所示，双向电磁阀还包括弹性元件 5 , 活塞导向段 27 与管路安装段 28之间形成有台阶 29; 弹性元件 5套于活塞 2的下部的周向外部，并弹性支撑于台阶 29与阀座的内底壁之间。在该种结构中，该弹性元件 5可以平衡活塞的重力，在上腔和下腔的压力差的作用下，活塞 2能够较为容易地打开，并且不易关闭，从而能够进一步防止活塞 2发生上下振动，并保证了流量的稳定性。 In addition, as shown in FIG. 8, the two-way solenoid valve further includes an elastic member 5, and a step 29 is formed between the piston guiding portion 27 and the pipe mounting portion 28; the elastic member 5 is sleeved on the lower portion of the piston 2. It is circumferentially outward and is elastically supported between the step 29 and the inner bottom wall of the valve seat. In this configuration, the elastic member 5 can balance the gravity of the piston, and under the action of the pressure difference between the upper chamber and the lower chamber, the piston 2 can be opened relatively easily and is not easily closed, thereby further preventing the piston 2 from vibrating up and down. And guarantee the stability of the flow.

此外，需要说明的是，本发明对于导阀密封件 43的结构不作限制，该导阀密封件 43既可以为如图 4所示的密封球体，也可以为密封塞。 Further, it should be noted that the present invention is not limited to the structure of the pilot valve seal 43, which may be either a sealing ball as shown in Fig. 4 or a sealing plug.

最后，需要说明的是，在第一支路中，第一径向孔 231、径向密封面 233、径向密封体 234、第二径向孔 232和导向座实际上构成了第一种单向阀结构，该第一种单向阀结构使得第一支路单向导通；在第二支路中，轴向腔体 241、第一轴向密封面 242、单向阀芯 244和第一轴向止动部件 243实际上构成了第二种单向阀结构，该第二种单向阀结构使得第二支路单向导通；在第三支路中，第二轴向孔 252、第二轴向密封面 254、第二轴向密封体 255、第三轴向孔 253和第二轴向止动部件 256实际上构成了第三种单向阀结构，该第三种单向阀结构使得第三支路单向导通。 Finally, it should be noted that in the first branch, the first radial hole 231, the radial sealing surface 233, the radial sealing body 234, the second radial hole 232 and the guiding seat actually constitute the first type To the valve structure, the first one-way valve structure causes the first branch to be single-pass; in the second branch, the axial cavity 241, the first axial sealing surface 242, the one-way spool 244, and the first The axial stop member 243 actually constitutes a second one-way valve structure that allows the second branch to be single-passed; in the third branch, the second axial bore 252, The two axial sealing faces 254, the second axial sealing body 255, the third axial bore 253 and the second axial stop member 256 actually constitute a third one-way valve structure, the third one-way valve structure Make the third branch a single guide.

显然，在满足单向导通的功能的前提下，上述第一种单向阀结构、第二种单向阀结构和第三种单向阀结构可以互换，亦即第一支路可以采用所述第二种单向阀结构或所述第三种单向阀结构，第二支路可以采用所述第一种单向阀结构或所述第三种单向阀结构，第三支路可以采用所述第一种单向阀结构或所述第二种单向阀结构；当然，在满足单向导通的功能的前提下，所述第一支路、第二支路或者第三支路还可以采用其他结构的单向阀，该其他结构的单向阀显然也应该在本发明的保护范围之内。 Obviously, the above-mentioned first one-way valve structure, the second one-way valve structure and the third one-way valve structure can be interchanged on the premise of satisfying the function of the one-way conduction, that is, the first branch can be adopted The second one-way valve structure or the third one-way valve structure, the second branch may adopt the first one-way valve structure or the third one-way valve structure, and the third branch may Adopting the first one-way valve structure or the second one-way valve structure; of course, the first branch, the second branch or the third branch is provided on the premise of satisfying the function of the single-pass It is also possible to use a one-way valve of other construction, which is obviously also within the scope of the present invention.

以上对本发明所提供的一种双向电磁阀进行了详细介绍。本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想。应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以对本发明进行若干改进和修饰，这些改进和修饰也落入本发明权利要求的保护范围内。 The two-way solenoid valve provided by the present invention has been described in detail above. The principles and embodiments of the present invention have been described herein in terms of specific examples, and the description of the above embodiments is only to assist in understanding the method of the present invention and its core idea. It should be noted that those skilled in the art can make various modifications and changes to the present invention without departing from the spirit and scope of the invention.

Claims

权利要求 Rights request

1、一种双向电磁阀，包括设有主阀口和阀腔的阀座，所述阔腔中设有与所述主阀口配合的活塞，所述活塞分隔所述阀腔为上腔和下腔，并所述活塞的上端部设有由导阀部件开启或关闭的导阀口；所述双向电磁阀还包括与所述下腔连通的横接管、及通过所述主阀口可与下腔连通的竖接管；其特征在于，所述活塞的周向侧壁与相对应的所述阀腔的内壁之间具有流通间隙；所述活塞上设有均与所述导阀口连通并可由所述上腔向所述横接管一端单向导通的第一支路、及可由所述上腔向所述竖接管一端单向导通的第二支路；所述活塞上还设有可由所述竖接管一端向所述上腔单向导通的第三支路；所述导阀口和所述第二支路所确定的流通面积大于所述流通间隙的流通面积，所述导阀口和所述第一支路所确定的流通面积大于所述第三支路的流通面积；所述第一支路包括径向管路。 A two-way solenoid valve comprising a valve seat provided with a main valve port and a valve cavity, wherein the cavity is provided with a piston that cooperates with the main valve port, and the piston separates the valve cavity into an upper chamber and a lower chamber, and an upper end portion of the piston is provided with a pilot valve port opened or closed by a pilot valve member; the two-way solenoid valve further includes a cross tube communicating with the lower chamber, and the main valve port is a vertical pipe communicating with the lower chamber; wherein: a circumferential gap between the circumferential side wall of the piston and an inner wall of the corresponding valve cavity; the piston is provided with a communication port a first branch that can be unidirectionally guided from the upper chamber to one end of the cross tube, and a second branch that can be unidirectionally guided from the upper chamber to the end of the vertical tube; a third branch that is unidirectionally guided to one end of the vertical pipe; a flow area determined by the pilot port and the second branch is larger than a flow area of the flow gap, the pilot port and The flow area determined by the first branch is greater than the circulation of the third branch Area; the first branch includes a radial tube.

2、如权利要求 1所述的双向电磁阀，其特征在于，所述阀座的内壁上设有阀座导向段，所述活塞的圓周外壁上设有与所述阀座导向段配合的活塞导向段；所述活塞导向段的下方开设有外径变小的管路安装段，所述径向管路开设于所述管路安装段上；所述阀座导向段的下部进一步开设有环形凹槽，并所述活塞开启所述主阀口时，所述径向管路整体处于所述环形槽所正对的范围内。 The two-way solenoid valve according to claim 1, wherein the inner wall of the valve seat is provided with a valve seat guiding section, and the outer circumferential wall of the piston is provided with a piston that cooperates with the valve seat guiding section. a guiding portion; a pipe mounting portion having a smaller outer diameter is disposed below the piston guiding portion, the radial pipe is opened on the pipe mounting portion; and a lower portion of the valve seat guiding portion is further provided with a ring a groove, and when the piston opens the main valve port, the radial pipe as a whole is in a range in which the annular groove faces.

3、如权利要求 2所述的双向电磁阀，其特征在于，所述双向电磁阀还包括弹性元件，所述活塞导向段与所述管路安装段之间形成有台阶；所述弹性元件套于所述活塞的下部的周向外部，并弹性支撑于所述台阶与所述阀座的内底壁之间。 The two-way solenoid valve according to claim 2, wherein the two-way electromagnetic valve further comprises an elastic member, and a step is formed between the piston guiding portion and the pipe mounting portion; a circumferential outer portion of the lower portion of the piston and elastically supported between the step and an inner bottom wall of the valve seat.

4、如权利要求 1或 2所述的双向电磁阀，其特征在于，该径向管路内设有径向密封面及与该径向密封面配合的径向密封体；所述径向管路内还设有使得所述径向密封体沿所述活塞的径向移动的导向座，并该导向座上设有连通所述横接管一端与所述径向管路的导向座通道。 The two-way solenoid valve according to claim 1 or 2, wherein the radial pipe is provided with a radial sealing surface and a radial sealing body matched with the radial sealing surface; a guide seat for moving the radial sealing body along a radial direction of the piston, and guiding the guide A guide seat passage connecting one end of the cross pipe and the radial pipe is provided on the seat.

5、如权利要求 4所述的双向电磁阀，其特征在于，所述径向管路包括第一径向孔及孔径变大的第二径向孔，所述径向密封面形成于所述第一径向孔与所述第二径向孔之间的台阶上；所述导向座设于所述第二径向孔中，并导向支撑所述径向密封体沿所述活塞的径向移动，以便密封或开启所述径向密封面。 The two-way solenoid valve according to claim 4, wherein the radial pipe includes a first radial hole and a second radial hole having a larger diameter, the radial sealing surface being formed in the a step between the first radial hole and the second radial hole; the guiding seat is disposed in the second radial hole and guided to support the radial sealing body along the radial direction of the piston Move to seal or open the radial sealing surface.

6、如权利要求 5所述的双向电磁阀，其特征在于，所述导向座为一端设有开口的圓筒，所述径向密封体设于所述圓筒的筒内腔中，所述圓筒以其开口正对所述径向密封面，以便所述径向密封体开启或关闭所述径向密封面；所述导向座通道为开设于所述圓筒的周向侧壁上并连通所述筒内腔与所述第二径向孔的筒缺口。 The two-way solenoid valve according to claim 5, wherein the guide seat is a cylinder having an opening at one end, and the radial sealing body is disposed in a cylinder cavity of the cylinder, a cylinder with its opening facing the radial sealing surface such that the radial sealing body opens or closes the radial sealing surface; the guiding seat passage is formed on a circumferential side wall of the cylinder and A barrel gap connecting the barrel inner chamber and the second radial hole.

7、如权利要求 6所述的双向电磁阀，其特征在于，所述筒缺口进一步延伸至所述圓筒的底部密封端，以便该圓筒的底部密封端与所述第二径向孔的内壁之间具有导通间隙。 The two-way solenoid valve according to claim 6, wherein said barrel notch further extends to a bottom sealing end of said cylinder such that a bottom sealing end of said cylinder and said second radial hole There is a conduction gap between the inner walls.

8、如权利要求 6所述的双向电磁阀，其特征在于，所述圓筒以其周向侧壁过盈配合于所述第二径向孔中。 The two-way solenoid valve according to claim 6, wherein said cylinder is interference-fitted in said second radial bore with its circumferential side wall.

9、如权利要求 2至 8任一项所述的双向电磁阀，其特征在于，所述活塞沿轴向进一步开设有与所述导阀口连通的导阀通道，所述导阀口通过所述导阀通道分别与所述第一支路和所述第二支路单向导通。 The two-way solenoid valve according to any one of claims 2 to 8, wherein the piston is further provided with a pilot valve passage communicating with the pilot valve port in the axial direction, and the pilot valve port passes through The pilot valve passages are unidirectionally coupled to the first branch and the second branch, respectively.

10、如权利要求 9所述的双向电磁阀，其特征在于，所述第二支路包括与所述导阀通道连通的轴向腔体，该轴向腔体与所述导阀通道之间设有第一轴向密封面，所述轴向腔体内设有密封该第一轴向密封面的第一轴向密封体；所述轴向腔体远离所述第一轴向密封面的一端设有第一轴向止动部件，且该第一轴向止动部件设有连通所述轴向腔体与所述竖接管一端的第一轴向通孔。 10. The two-way solenoid valve of claim 9, wherein the second branch includes an axial cavity in communication with the pilot passage, between the axial cavity and the pilot passage a first axial sealing surface is disposed, the first axial sealing body sealing the first axial sealing surface is disposed in the axial cavity; the axial cavity is away from the end of the first axial sealing surface A first axial stop member is provided, and the first axial stop member is provided with a first axial through hole communicating with the axial cavity and one end of the vertical pipe.

11、如权利要求 10所述的双向电磁阀，其特征在于，所述第一轴向密封体为单向阀芯，所述单向阀芯设有相互连通的阀芯径向孔和阀芯轴向孔，所述阀芯径向孔与所述轴向腔体连通，所述阀芯轴向孔与所述第一轴向通孔连通。 The two-way solenoid valve according to claim 10, wherein the first axial sealing body is a one-way valve core, and the one-way valve core is provided with a spool radial hole and a valve core that communicate with each other. An axial hole, the spool radial hole is in communication with the axial cavity, the spool axial hole and the first An axial through hole is connected.

12、如权利要求 2至 11任一项所述的双向电磁阀，其特征在于，所述第三支路包括与所述竖接管一端连通的第二轴向孔，且该第二轴向孔的另一端连通有孔径变大的第三轴向孔；第二轴向孔与第三轴向孔之间设有第二轴向密封面，并第三轴向孔中设有密封该第二轴向密封面的第二轴向密封体；所述第三轴向孔远离所述第二轴向密封面的一端设有第二轴向止动部件，并该第二轴向止动部件设有连通第三轴向孔与所述上腔的第二轴向通孔。 The two-way solenoid valve according to any one of claims 2 to 11, wherein the third branch includes a second axial hole communicating with one end of the vertical pipe, and the second axial hole The other end is connected with a third axial hole having a larger aperture; a second axial sealing surface is disposed between the second axial hole and the third axial hole, and the second axial hole is provided with a sealing second a second axial sealing body of the axial sealing surface; a second axial stopping member is disposed at one end of the third axial hole away from the second axial sealing surface, and the second axial stopping component is provided There is a second axial through hole connecting the third axial hole and the upper cavity.

13、如权利要求 12所述的双向电磁阀，其特征在于，所述活塞进一步开设有斜孔，所述第二轴向孔通过所述斜孔与所述竖接管一端连通。 The two-way solenoid valve according to claim 12, wherein the piston is further provided with an inclined hole, and the second axial hole communicates with one end of the vertical pipe through the inclined hole.