Bidirectional throttle valve, air conditioner pipe and air conditioner

Abstract

The bidirectional throttle valve comprises a valve seat assembly and a valve element assembly, a first valve cavity, a second valve cavity and a third valve cavity which are sequentially communicated are formed in the valve seat assembly in the axial direction, a first flow channel and a second flow channel are arranged in the middle of the valve seat assembly, the first flow channel is communicated with the first valve cavity and the second valve cavity, and the second flow channel is communicated with the third valve cavity. The second flow channel is communicated with the third valve cavity and the second valve cavity, the valve element assembly is movably arranged in the second valve cavity and blocks the first flow channel and the second flow channel, the valve element assembly has a first state and a second state, when the valve element assembly is in the first state, the first flow channel is blocked, and the second flow channel is conducted, and when the valve element assembly is in the second state, the second flow channel is closed. And the first flow channel is conducted and blocked. According to the technical scheme, conduction of the flow channel is controlled through movement of the valve element assembly, so that the flow direction and flow of fluid are controlled, and finally controllable throttling in two directions is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning, in particular to a two-way throttle valve, an air conditioning pipe and an air conditioner. Background Art

[0002] Air conditioning pipes are the basis for achieving the cooling and heating functions of air conditioning. The cooling or heating of air conditioning is achieved by the one-way circulation of fluid in the air conditioning pipes, and the flow direction of the fluid is different in cooling and heating modes. At present, air conditioning pipes usually rely on a one-way valve and a throttle valve in series to control the flow direction and flow rate of the fluid. The fluid can only achieve one-way throttling in the same pipeline. If two-way throttling is desired, two different flow channels need to be set in the pipe for diversion, and a one-way valve and a throttle valve are set in both flow channels, which makes the flow channel design more complicated. Utility Model Content

[0003] The main purpose of the utility model is to provide a two-way throttle valve, which aims to integrate the functions of a guide valve and a throttle valve into one valve body to achieve controllable throttling in two directions.

[0004] To achieve the above-mentioned purpose, the two-way throttle valve proposed in the utility model includes a valve seat assembly and a valve core assembly, the valve seat assembly is formed with a first valve chamber, a second valve chamber and a third valve chamber connected in sequence along the axial direction, the middle part of the valve seat assembly is provided with a first flow channel and a second flow channel, the first flow channel connects the first valve chamber and the second valve chamber, the second flow channel connects the third valve chamber and the second valve chamber, the valve core assembly is movably arranged in the second valve chamber, and blocks the first flow channel and the second flow channel, the valve core assembly has a first state and a second state, when the valve core assembly is in the first state, the first flow channel is blocked, and the second flow channel is connected, when the valve core assembly is in the second state, the first flow channel is connected, and the first flow channel is blocked.

[0005] Optionally, the valve seat assembly includes a sleeve and a valve seat, the valve seat is embedded in the sleeve, the valve seat includes a first valve body, a second valve body and a third valve body connected in sequence, the first valve body is axially opened with a first channel, the first channel is connected with a hollow channel of the sleeve to form the first valve cavity, the second valve body is axially opened with a second channel to form the second valve cavity, the third valve body is axially opened with a third channel, the third channel is connected with the hollow channel of the sleeve to form the third valve cavity.

[0006] Optionally, the first flow channel includes a first flow channel, a second flow channel and a third flow channel, the first flow channel is parallel to and spaced from the second valve cavity, the second flow channel and the third flow channel are relatively arranged at two ends of the first flow channel, the second flow channel connects the first flow channel and the second valve cavity, and the third flow channel connects the first flow channel and the first valve cavity. The second flow channel includes a fourth flow channel, a fifth flow channel and a sixth flow channel, the fourth flow channel is parallel to and spaced from the second valve cavity, the fifth flow channel and the sixth flow channel are relatively arranged at two ends of the fourth flow channel, the fifth flow channel connects the fourth flow channel and the second valve cavity, and the sixth flow channel connects the fourth flow channel and the third valve cavity.

[0007] Optionally, the outer walls of the first valve body and the third valve body are arranged in close contact with the inner wall of the sleeve, and the outer wall of the second valve body is provided with a groove so that the first flow passage and the fourth flow passage are formed between the outer wall of the second valve body and the inner wall of the sleeve. The second flow passage is opened on the side wall of the second valve body at one end facing the third valve body, and the third flow passage is opened on the side wall at the junction of the first valve body and the second valve body; the fifth flow passage is opened on the side wall of the second valve body at one end facing the first valve body, and the sixth flow passage is opened on the side wall at the junction of the second valve body and the third valve body.

[0008] Optionally, the valve core assembly includes a first valve core and a second valve core, the first valve core and the second valve core are both movably arranged in the second valve cavity, the first valve core blocks the fifth flow channel, the second valve core blocks the second flow channel, and a valve core gap is formed between the first valve core and the second valve core; when the fluid flows from the first valve cavity to the second valve cavity, the fluid pushes the first valve core forward, the first valve core avoids the fifth flow channel, and the second flow channel is opened; when the fluid flows from the third valve cavity to the second valve cavity, the fluid pushes the second valve core forward, the second valve core avoids the second flow channel, and the first flow channel is opened.

[0009] Optionally, a diameter of the second valve cavity is larger than a diameter of the first valve cavity and a diameter of the second valve cavity, so as to restrict the movement of the valve core assembly within the second valve cavity.

[0010] Optionally, the valve core assembly further includes an elastic member, one end of the elastic member is connected to the first valve core, the other end of the elastic member is connected to the second valve core, and the first valve core and the second valve core are abutted against the end wall of the second valve cavity under the action of the elastic member.

[0011] Optionally, the elastic member includes a spring, a first protrusion is protruding from one end of the first valve core facing the second valve core, a second protrusion is protruding from one end of the second valve core facing the first valve core, the first protrusion and the second protrusion are arranged opposite to each other, one end of the spring is sleeved on the first protrusion to be fixedly connected to the first valve core, and the other end of the spring is sleeved on the second protrusion to be fixedly connected to the second valve core.

[0012] Optionally, the first valve core is provided with a first middle flow channel along the axial direction, and the second valve core is provided with a second middle flow channel along the axial direction, the second middle flow channel is arranged opposite to the first middle flow channel, the first middle flow channel connects the first valve cavity and the valve core gap, and the second middle flow channel connects the third valve cavity and the valve core gap.

[0013] Optionally, the two-way throttle valve further includes a filter screen, which is embedded in the sleeve and arranged oppositely at two ends of the valve seat.

[0014] The utility model also provides an air conditioning pipe, which comprises an air conditioning pipe body and the above-mentioned two-way throttle valve, wherein the air conditioning pipe body is butt-jointed with the sleeve of the two-way throttle valve.

[0015] The utility model also provides an air conditioner, which includes the air conditioning pipe provided above.

[0016] The working principle of the two-way throttle valve is as follows: the valve core assembly can move in the second valve cavity. In the initial state, the valve core assembly blocks the connecting port of the first flow channel and the second flow channel, and the first flow channel and the second flow channel are both in a non-conducting state. When the fluid flows from the first valve cavity to the second valve cavity, the valve core assembly is pushed forward under the action of the pressure difference, the valve core assembly avoids the connecting port of the second flow channel and the second valve cavity, the second flow channel is connected, and the valve core assembly still blocks the connecting port of the first flow channel and the second valve cavity, and the first flow channel is in a non-conducting state, ensuring that the fluid cannot flow in the opposite direction. When the fluid flows from the third valve cavity to the second valve cavity, the valve core assembly is pushed forward under the action of the pressure difference, the valve core assembly avoids the connecting port of the first flow channel and the second valve cavity, the first flow channel is connected, and the valve core assembly still blocks the connecting port of the second flow channel and the second valve cavity, and the second flow channel is in a non-conducting state, ensuring that the fluid cannot flow in the opposite direction. Among them, when the pressure difference between the first valve chamber or the third valve chamber and the second valve chamber is large, the valve core assembly is subjected to a large thrust, moves forward a longer distance, the flow channel opening is larger, and the fluid passes through at a large flow rate; conversely, when the pressure difference between the first valve chamber or the third valve chamber and the second valve chamber is small, the valve core assembly moves forward a shorter distance, the flow channel opening is smaller, and the fluid passes through at a small flow rate, ultimately achieving controllable throttling in two directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of an embodiment of the two-way throttle valve of the utility model;

[0019] Figure 2 It is a structural schematic diagram of a valve seat assembly of an embodiment of a two-way throttle valve of the utility model;

[0020] Figure 3 This is a structural schematic diagram of a valve core assembly of an embodiment of a two-way throttle valve of the utility model;

[0021] Figure 4 It is a structural schematic diagram of an embodiment of the two-way throttle valve of the utility model in a first state;

[0022] Figure 5 It is a structural schematic diagram of an embodiment of the bidirectional throttle valve of the utility model in a high-pressure working condition in the second state;

[0023] Figure 6 It is a structural schematic diagram of an embodiment of the two-way throttle valve of the utility model in a second state under medium and low pressure conditions.

[0024] Description of Figure Numbers:

[0025] Label name Label name 100 Two-way throttle valve 16 Second flow channel 11 First valve body 161 The fourth flow channel 111 First valve chamber 162 Fifth flow channel 112 First guide surface 163 The sixth flow channel 12 Second valve body 2 Filter 121 Second valve chamber 31 First valve core 13 The third valve body 311 First boss 131 The third valve chamber 312 First middle channel 132 Second guide surface 32 Second valve core 14 casing 321 Second boss 15 First runner 322 Second middle flow channel 151 The first flow channel 33 Valve core clearance 152 The second flow channel 34 Elastic parts 153 The third flow channel

[0026] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0029] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0030] The utility model provides a two-way throttle valve 100 .

[0031] Reference Figures 1 to 6 The two-way throttle valve 100 of the utility model includes a valve seat assembly and a valve core assembly. The valve seat assembly is formed with a first valve cavity 111, a second valve cavity 121 and a third valve cavity 131 which are connected in sequence along the axial direction. A first flow channel 15 and a second flow channel 16 are arranged in the middle of the valve seat assembly. The first flow channel 15 connects the first valve cavity 111 and the second valve cavity 121, and the second flow channel 16 connects the third valve cavity 131 and the second valve cavity 121. The valve core assembly is movably arranged in the second valve cavity 121, and blocks the first flow channel 15 and the second flow channel 16. The valve core assembly has a first state and a second state. When the valve core assembly is in the first state, the first flow channel 15 is blocked and the second flow channel 16 is conducted. When the valve core assembly is in the second state, the first flow channel 15 is conducted and the first flow channel 15 is blocked.

[0032] The embodiment of the two-way throttle valve 100 includes a valve seat assembly and a valve core assembly, wherein the valve seat assembly is formed with a first valve cavity 111, a second valve cavity 121 and a third valve cavity 131 which are arranged through the axial direction, and the middle part of the valve seat assembly is provided with a first flow channel 15 and a second flow channel 16 which are not connected to each other, wherein one end of the first flow channel 15 is connected to the first valve cavity 111, and the other end is connected to the second valve cavity 121, and one end of the second flow channel 16 is in communication with the second valve cavity 121, and the other end is in communication with the third valve cavity 131. The first flow channel 15 and the second flow channel 16 can be arranged by an external guide tube. The valve core assembly is arranged in the second valve cavity 121, and the peripheral side wall of the valve core assembly is arranged in contact with the peripheral side wall of the second valve cavity 121, thereby the valve core assembly isolates the first valve cavity 111 and the third valve cavity 131.

[0033] The working principle of the two-way throttle valve 100 is as follows: the valve core assembly can move in the second valve chamber 121. In the initial state, the valve core assembly blocks the connecting port of the first flow channel 15 and the second flow channel 16, and the first flow channel 15 and the second flow channel 16 are both in a non-conducting state.

[0034] When the fluid flows from the first valve chamber 111 to the second valve chamber 121, the valve core assembly is pushed forward by the pressure difference, and the valve core assembly avoids the connecting port between the second flow channel 16 and the second valve chamber 121. The second flow channel 16 is connected, and the valve core assembly still blocks the connecting port between the first flow channel 15 and the second valve chamber 121. The first flow channel 15 is in a non-conducting state, ensuring that the fluid cannot flow in the opposite direction.

[0035] When the fluid flows from the third valve chamber 131 to the second valve chamber 121, the valve core assembly is pushed forward by the pressure difference, and the valve core assembly avoids the connecting port between the first flow channel 15 and the second valve chamber 121. At this time, the first flow channel is connected, and the valve core assembly still blocks the connecting port between the second flow channel 16 and the second valve chamber 121. The second flow channel 16 is in a non-conducting state, ensuring that the fluid cannot flow in the opposite direction.

[0036] Among them, when the pressure difference between the first valve chamber 111 or the third valve chamber 131 and the second valve chamber 121 is large, that is, when the two-way throttle valve 100 is in a high-pressure working condition, the valve core assembly is subjected to a large thrust, moves forward a longer distance, the flow channel opening is larger, and the fluid passes through at a large flow rate; conversely, when the pressure difference between the first valve chamber 111 or the third valve chamber 131 and the second valve chamber 121 is small, that is, when the two-way throttle valve 100 is in a medium- and low-pressure working condition, the valve core assembly moves forward a shorter distance, the flow channel opening is smaller, and the fluid passes through at a small flow rate.

[0037] In summary, the technical solution of the utility model is to arrange the valve core assembly in the second valve cavity 121 of the valve seat assembly to isolate the first valve cavity 111 and the third valve cavity 131, and control the conduction of the first flow channel 15 and the second flow channel 16 by the movement of the valve core assembly, so as to control the flow direction of the fluid, and the movement distance of the valve core assembly can be adjusted by the pressure difference of the valve cavity, so as to control the flow rate of the fluid, and finally realize controllable throttling in two directions.

[0038] In one embodiment of the present invention, referring to Figure 2 The valve seat assembly includes a sleeve 14 and a valve seat, the valve seat is embedded in the sleeve 14, and the valve seat includes a first valve body 11, a second valve body 12 and a third valve body 13 connected in sequence. The first valve body 11 is axially provided with a first channel, and the first channel is communicated with the hollow channel of the sleeve 14 to form a first valve cavity 111. The second valve body 12 is axially provided with a second channel to form a second valve cavity 121. The third valve body 13 is axially provided with a third channel, and the third channel is communicated with the hollow channel of the sleeve 14 to form a third valve cavity 131.

[0039] Specifically, the first flow channel 15 includes a first flow channel 151, a second flow channel 152 and a third flow channel 153. The first flow channel 151 is parallel to the second valve cavity 121 and is arranged at an interval. The second flow channel 152 and the third flow channel 153 are relatively arranged at two ends of the first flow channel 151. The second flow channel 152 connects the first flow channel 151 and the second valve cavity 121, and the third flow channel 153 connects the first flow channel 151 and the first valve cavity 111.

[0040] The second flow channel 16 includes a fourth flow channel 161, a fifth flow channel 162 and a sixth flow channel 163. The fourth flow channel 161 is parallel to the second valve cavity 121 and is arranged at an interval. The fifth flow channel 162 and the sixth flow channel 163 are arranged at two ends of the fourth flow channel 161 opposite to each other. The fifth flow channel 162 connects the fourth flow channel 161 with the second valve cavity 121, and the sixth flow channel 163 connects the fourth flow channel 161 with the third valve cavity 131.

[0041] In the initial state, the valve core assembly blocks the second flow passage 152 and the fifth flow passage 162, and the first flow passage 15 and the second flow passage 16 are both in a non-conducting state. When the fluid flows from the first valve cavity 111 to the second valve cavity 121, the fluid pushes the valve core assembly forward, the valve core assembly avoids the opening of the fifth flow passage 162, and the second flow passage 16 is conductive. When the fluid flows from the third valve cavity 131 to the second valve cavity 121, the fluid pushes the valve core assembly forward, the valve core assembly avoids the opening of the second flow passage 152, and the first flow passage 15 is conductive.

[0042] Continue to refer to Figure 2 The outer walls of the first valve body 11 and the third valve body 13 are arranged in close contact with the inner wall of the sleeve 14, and the outer wall of the second valve body 12 is provided with a groove so that a first flow passage 151 and a fourth flow passage 161 are formed between the outer wall of the second valve body 12 and the inner wall of the sleeve 14. The second flow passage 152 is opened on the side wall of the second valve body 12 at one end facing the third valve body 13, and the third flow passage 153 is opened on the side wall at the junction of the first valve body 11 and the second valve body 12. The fifth flow passage 162 is opened on the side wall of the second valve body 12 at one end facing the first valve body 11, and the sixth flow passage 163 is opened on the side wall at the junction of the second valve body 12 and the third valve body 13. In this embodiment, the first flow passage 15 and the second flow passage 16 are formed by opening a groove and an opening on the side wall of the valve body, so that there is no need for an external guide pipe, the number of components is reduced, and the structure is simplified.

[0043] Reference Figure 3The valve core assembly includes a first valve core 31 and a second valve core 32. The first valve core 31 and the second valve core 32 are both movably arranged in the second valve cavity 121. In the initial state, the first valve core 31 blocks the fifth flow channel 162, and the second valve core 32 blocks the second flow channel 152. A valve core gap 33 is formed between the first valve core 31 and the second valve core 32.

[0044] When the fluid flows from the first valve chamber 111 to the second valve chamber 121, the fluid pushes the first valve core 31 forward, the first valve core 31 avoids the fifth flow channel 162, and the second flow channel 16 is connected; when the fluid flows from the third valve chamber 131 to the second valve chamber 121, the fluid pushes the second valve core 32 forward, the second valve core 32 avoids the second flow channel 152, and the first flow channel 15 is connected.

[0045] Reference Figure 2 The diameter of the second valve cavity 121 is larger than the diameter of the first valve cavity 111 and the diameter of the second valve cavity 121, so as to limit the movement of the valve core assembly in the second valve cavity 121. A first guide surface 112 is formed at the junction of the first valve cavity 111 and the second valve cavity 121, and the first guide surface 112 is inclined to transitionally connect the first valve cavity 111 and the second valve cavity 121. A second guide surface 132 is formed at the junction of the second valve cavity 121 and the third valve cavity 131, and the second guide surface 132 is inclined to transitionally connect the second valve cavity 121 and the third valve cavity 131, thereby weakening the turbulence phenomenon caused by the sudden change in the size of the flow cross section.

[0046] Furthermore, the valve core assembly also includes an elastic member 34, one end of the elastic member 34 is connected to the first valve core 31, and the other end of the elastic member 34 is connected to the second valve core 32. The first valve core 31 and the second valve core 32 are pressed against the end wall of the second valve cavity 121 under the action of the elastic member 34.

[0047] When the thrust applied to the first valve core 31 is greater than the elastic force of the elastic member 34, the first valve core 31 is pushed forward and the elastic member 34 is compressed. When the thrust applied to the first valve core 31 is less than the elastic force of the elastic member 34, the first valve core 31 is reset under the drive of the elastic member 34. Similarly, when the thrust applied to the second valve core 32 is greater than the elastic force of the elastic member 34, the second valve core 32 is pushed forward and the elastic member 34 is compressed. When the thrust applied to the second valve core 32 is less than the elastic force of the elastic member 34, the second valve core 32 is reset under the drive of the elastic member 34.

[0048] It should be noted that under high pressure conditions, Figure 5 As shown, the pressure difference between the first valve core 31 and the second valve core 32 is large, the thrust applied to the first valve core 31 and the second valve core 32 is also large, the elastic member 34 is compressed more, the fifth flow passage 162 and the second flow passage 152 are opened wide, and a large amount of fluid flows through. On the contrary, under medium and low pressure conditions, Figure 6 As shown, the pressure difference on both sides of the first valve core 31 or the second valve core 32 is small, the thrust applied to the first valve core 31 or the second valve core 32 is also small, the compression amount of the elastic member 34 is small, the fifth flow channel 162 or the second flow channel 152 has a small opening, and a small flow rate of fluid passes through.

[0049] In summary, this embodiment realizes variable throttling of the flow rate through the balance relationship between the elastic force of the elastic member 34 and the pressure difference, thereby realizing bidirectional throttling with a simple structure.

[0050] Among them, the elastic member 34 includes a spring, a first protrusion 311 is protruded from one end of the first valve core 31 facing the second valve core 32, and a second protrusion 321 is protruded from one end of the second valve core 32 facing the first valve core 31. The first protrusion 311 and the second protrusion 321 are arranged opposite to each other and are located at the axial position of the valve core. One end of the spring is sleeved on the first protrusion 311 to be fixedly connected to the first valve core 31, and the other end of the spring is sleeved on the second protrusion 321 to be fixedly connected to the second valve core 32, thereby realizing the limitation of the spring and preventing the spring from shaking left and right during the extension and contraction process.

[0051] In one embodiment of the utility model, the first valve core 31 is formed with a first middle flow channel 312 along the axial direction, and the second valve core 32 is formed with a second middle flow channel 322 along the axial direction. The second middle flow channel 322 is arranged opposite to the first middle flow channel 312. The first middle flow channel 312 communicates with the first valve cavity 111 and the valve core gap 33, and the second middle flow channel 322 communicates with the third valve cavity 131 and the valve core gap 33. Therefore, regardless of whether the first flow channel 15 and the second flow channel 16 are connected, the fluid can flow from the first valve cavity 111 through the first middle flow channel 312 and the second middle flow channel 322 into the third valve cavity 131, or from the third valve cavity 131 through the second middle flow channel 322 and the first middle flow channel 312 into the first valve cavity 111, thereby avoiding the problem that the fluid cannot pass when the elastic member 34 is stuck.

[0052] The two-way throttle valve 100 further includes a filter screen 2, which is embedded in the sleeve 14 and arranged at both ends of the valve seat to cover the hollow channel of the sleeve 14. The filter screen 2 has a filtering effect on the fluid flowing into the valve seat, preventing impurities carried in the fluid from flowing into the first flow channel 15 and the second flow channel 16.

[0053] The utility model also provides an air conditioning pipe, which includes an air conditioning pipe body and a two-way throttle valve 100. The specific structure of the two-way throttle valve 100 refers to the above embodiment. Since the air conditioning pipe adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here. The air conditioning pipe body is docked with the sleeve 14 of the two-way throttle valve 100.

[0054] The utility model also provides an air conditioner, which includes the air conditioning pipe provided above, and thus has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0055] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the concept of the utility model, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A two-way throttle valve, characterized in that: include: A valve seat assembly, wherein the valve seat assembly is formed with a first valve cavity, a second valve cavity and a third valve cavity which are connected in sequence along the axial direction, and a first flow channel and a second flow channel are arranged in the middle of the valve seat assembly, wherein the first flow channel connects the first valve cavity and the second valve cavity, and the second flow channel connects the third valve cavity and the second valve cavity; A valve core assembly, wherein the valve core assembly is movably disposed in the second valve cavity and blocks the first flow channel and the second flow channel. The valve core assembly has a first state and a second state. When the valve core assembly is in the first state, the first flow channel is blocked and the second flow channel is connected. When the valve core assembly is in the second state, the first flow channel is connected and the first flow channel is blocked.

2. The two-way throttle valve according to claim 1, characterized in that: The valve seat assembly includes a sleeve and a valve seat, the valve seat is embedded in the sleeve, the valve seat includes a first valve body, a second valve body and a third valve body connected in sequence, the first valve body is axially opened with a first channel, the first channel is communicated with the hollow channel of the sleeve to form the first valve cavity, the second valve body is axially opened with a second channel to form the second valve cavity, the third valve body is axially opened with a third channel, the third channel is communicated with the hollow channel of the sleeve to form the third valve cavity.

3. The two-way throttle valve according to claim 2, characterized in that: The first flow channel includes a first flow passage, a second flow passage and a third flow passage, the first flow passage is parallel to and spaced from the second valve cavity, the second flow passage and the third flow passage are arranged at opposite ends of the first flow passage, the second flow passage communicates with the first flow passage and the second valve cavity, and the third flow passage communicates with the first flow passage and the first valve cavity; The second flow channel includes a fourth flow channel, a fifth flow channel and a sixth flow channel. The fourth flow channel is parallel to the second valve cavity and is arranged at an interval. The fifth flow channel and the sixth flow channel are arranged at two ends of the fourth flow channel opposite to each other. The fifth flow channel connects the fourth flow channel and the second valve cavity, and the sixth flow channel connects the fourth flow channel and the third valve cavity.

4. The two-way throttle valve according to claim 3, characterized in that: The outer walls of the first valve body and the third valve body are fitted with the inner wall of the sleeve, and the outer wall of the second valve body is concavely provided with a groove so that the first flow passage and the fourth flow passage are formed between the outer wall of the second valve body and the inner wall of the sleeve; The second flow passage is formed on a side wall of the second valve body at one end facing the third valve body, and the third flow passage is formed on a side wall at the junction of the first valve body and the second valve body; The fifth flow passage is opened on the side wall of the second valve body at one end facing the first valve body, and the sixth flow passage is opened on the side wall at the junction of the second valve body and the third valve body.

5. The two-way throttle valve according to claim 3, characterized in that: The valve core assembly includes a first valve core and a second valve core, the first valve core and the second valve core are both movably disposed in the second valve cavity, the first valve core blocks the fifth flow passage, the second valve core blocks the second flow passage, and a valve core gap is formed between the first valve core and the second valve core; When the fluid flows from the first valve cavity to the second valve cavity, the fluid pushes the first valve core forward, the first valve core avoids the fifth flow passage, and the second flow passage is connected; When the fluid flows from the third valve chamber to the second valve chamber, the fluid pushes the second valve core forward, the second valve core avoids the second flow passage, and the first flow passage is connected.

6. The two-way throttle valve according to claim 5, characterized in that: The diameter of the second valve cavity is larger than the diameter of the first valve cavity and the diameter of the second valve cavity, so as to restrict the movement of the valve core assembly in the second valve cavity.

7. The two-way throttle valve according to claim 6, characterized in that: The valve core assembly also includes an elastic member, one end of which is connected to the first valve core, and the other end of which is connected to the second valve core. The first valve core and the second valve core abut against the end wall of the second valve cavity under the action of the elastic member.

8. The two-way throttle valve according to claim 7, characterized in that: The elastic member includes a spring, a first protrusion is protruding from one end of the first valve core facing the second valve core, a second protrusion is protruding from one end of the second valve core facing the first valve core, the first protrusion and the second protrusion are arranged opposite to each other, one end of the spring is sleeved on the first protrusion to be fixedly connected to the first valve core, and the other end of the spring is sleeved on the second protrusion to be fixedly connected to the second valve core.

9. The two-way throttle valve according to claim 5, characterized in that: The first valve core forms a first middle flow channel along the axial direction, and the second valve core forms a second middle flow channel along the axial direction. The second middle flow channel is arranged opposite to the first middle flow channel. The first middle flow channel connects the first valve cavity and the valve core gap, and the second middle flow channel connects the third valve cavity and the valve core gap.

10. The two-way throttle valve according to claim 2, characterized in that: The two-way throttle valve further comprises a filter screen, which is embedded in the sleeve and arranged at two ends of the valve seat opposite to each other.

11. An air conditioning pipe, characterized in that: It comprises an air conditioning pipe body and a two-way throttle valve as described in any one of claims 1 to 10, wherein the air conditioning pipe body is butt-jointed with a sleeve of the two-way throttle valve.

12. An air conditioner, characterized in that: Comprising the air conditioning tube as claimed in claim 11.

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