CN210510379U - Four-way valve for air conditioner - Google Patents
Four-way valve for air conditioner Download PDFInfo
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- CN210510379U CN210510379U CN201921433469.9U CN201921433469U CN210510379U CN 210510379 U CN210510379 U CN 210510379U CN 201921433469 U CN201921433469 U CN 201921433469U CN 210510379 U CN210510379 U CN 210510379U
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Abstract
The utility model discloses a four-way valve for an air conditioner, which comprises a main valve body, a sliding component, a plurality of connecting pipes and a pressure relief component; the main valve body is provided with E, S, C, D four connecting pipes, and a valve cavity is arranged in the main valve body; the sliding assembly comprises a sliding block, an isolation cavity and a fluid channel are arranged on the sliding block along two radial sides of the valve cavity, and a pressure relief hole communicated with the isolation cavity and the fluid channel is formed in the sliding block; the pressure relief assembly is arranged beside the pressure relief hole and comprises a pressure relief valve plate, a valve plate lift limiter and a fixing device, and the pressure relief assembly is provided with a blocking position for blocking the pressure relief hole and a pressure relief position for opening the pressure relief hole. When the sliding block slides to the middle position from the left end to the right end, E, S, C, D four connecting pipes are not communicated with each other, thereby avoiding the occurrence of air mixing phenomenon and improving the overall performance of the air conditioner; the pressure relief assembly can relieve pressure when the pressure in the four-way valve is ultrahigh, so that the sliding block and the four-way valve are prevented from being damaged, and the service life of the four-way valve is prolonged.
Description
Technical Field
The utility model relates to an air conditioner technical field particularly, relates to an idle call cross valve.
Background
The four-way valve is an indispensable component in the air conditioner, and the switching of the refrigeration cycle and the heating cycle of the air conditioner can be realized by switching the on-off of four ports of the four-way valve.
The four-way valve structure for the air conditioner in the prior art is shown in fig. 1 and comprises a main valve body (01), a valve chamber (02) is formed in the main valve body (01), and four connecting pipes communicated with the valve chamber (02) are arranged on the main valve body (01) and are respectively as follows: the valve chamber is characterized in that a D connecting pipe (03) is positioned above the valve chamber, and an E connecting pipe (04), an S connecting pipe (05) and a C connecting pipe (06) are sequentially arranged below the valve chamber, a sliding block (07) is arranged in the valve chamber (02), the sliding block (07) is provided with a cavity (08) with an opening facing downwards, the sliding block (07) can slide along the inner wall of the valve chamber (02), and the sliding block (07) and the inner wall of the valve chamber (02) are kept sealed. Generally, a D connecting pipe (03) of the four-way valve is communicated with an outlet of a compressor of the air conditioner, a C connecting pipe (06) is communicated with an outdoor heat exchanger of the air conditioner, an S connecting pipe (05) is communicated with an inlet of the compressor of the air conditioner, and an E connecting pipe (04) is communicated with an indoor heat exchanger of the air conditioner. The working principle of the four-way valve is as follows: when the four-way valve is not electrified, the sliding block (07) is positioned at the first position (as shown in figure 1a), the D connecting pipe (03) is communicated with the C connecting pipe (06), and the E connecting pipe (04) is communicated with the S connecting pipe (05), so that indoor refrigeration is realized; when the four-way valve is powered on, the sliding block (07) slides to a third position (as shown in figure 1C), the D connecting pipe (03) is communicated with the E connecting pipe (04), and the C connecting pipe (06) is communicated with the S connecting pipe (05), so that indoor heating is realized.
The basic condition for the four-way valve commutation is the pressure difference (F) across the piston (09)1-F2) Greater than the frictional resistance f; when the pressure difference of the left piston cavity and the right piston cavity is larger than the frictional resistance f, the reversing of the four-way valve is started, however, when the sliding block (07) moves to the middle position (as shown in figure 1b), three connecting pipes of an E connecting pipe (04), an S connecting pipe (05) and a C connecting pipe (06) of the four-way valve are mutually communicated, and the discharged gas in a high-pressure pipe of the compressorThe refrigerant can directly flow to an S connecting pipe (05) (a compressor return air port) from a D connecting pipe (03) of the four-way valve through an E connecting pipe (04) and a C connecting pipe (06) to cause the pressure difference to be rapidly reduced, the air displacement of the compressor is smaller than the intermediate flow of the four-way valve in the instantaneous state, and the pressure difference at two ends of a piston of the four-way valve cannot reach the minimum action pressure difference required by reversing, namely F1-F2If f, the four-way valve can not be continuously reversed and stops at the middle position to form air leakage. After air-mixing is formed, noise is easy to generate in the operation process of the air conditioner, and air-mixing is easy to cause poor reversing of the four-way valve, so that the stability of the overall performance of an air conditioning system is not facilitated. Meanwhile, when the existing four-way valve is reversed, the sliding block (07) is easy to generate liquid impact, and the sliding block (07) and the four-way valve can be damaged.
Disclosure of Invention
The utility model aims to solve the technical problem that a cross valve for an air conditioner is provided to easy liquid is hit among the solution prior art, is strikeed gas, the switching-over noise is big, the switching-over is long, the poor problem of switching-over reliability.
For solving the technical problem, the utility model discloses the technical scheme who adopts as follows:
a four-way valve for an air conditioner comprises a main valve body (10), a sliding assembly, a plurality of connecting pipes and a pressure relief assembly (40); a valve cavity is arranged in the main valve body (10), the sliding assembly is arranged in the valve cavity and comprises a sliding block (20), a support (21), a first piston (22) and a second piston (23), the sliding block (20) is connected to the support (21), the first piston (22) and the second piston (23) are connected to two sides of the support (21), the sliding assembly divides two ends of the valve cavity into a first valve chamber (15) and a second valve chamber (16) which are mutually independent, and the sliding block (20) is axially movably arranged in the valve cavity; the sliding block (20) is provided with an isolation cavity (201) and a fluid channel (202) along two sides of the radial direction of the valve cavity, and a pressure relief hole (203) for communicating the isolation cavity (201) with the fluid channel (202) is formed in the sliding block; the connecting pipes are communicated with a valve cavity of the main valve body (10), and comprise an E connecting pipe (12) which is arranged on the main valve body (10) along the axial direction of the main valve body (10) and communicated with a heat exchanger of an indoor unit of an air conditioner, an S connecting pipe (13) which is communicated with an air suction pipe of a compressor, a C connecting pipe (14) which is communicated with a heat exchanger of an outdoor unit of the air conditioner, and a D connecting pipe (11) which is connected to the main valve body (10) and is arranged opposite to the S connecting pipe (13) and communicated with an exhaust port of the compressor; the pressure relief assembly (40) is mounted beside the pressure relief hole (203) on the fluid channel (202) side of the slider (20), and the pressure relief assembly (40) has a blocking position for blocking the pressure relief hole (203) and a pressure relief position for opening the pressure relief hole (203).
Furthermore, the diameters of the E connecting pipe (12), the S connecting pipe (13) and the C connecting pipe (14) are equal, and the length L of the sliding block (20) on the side of the isolation cavity (201)1Is equal to the diameter D of the D connecting pipe (11)1Diameter D of the E connecting pipe (12)2Summing; the distance between the E connecting pipe (12) and the outer wall close to the S connecting pipe (13) is equal to the diameter D of the D connecting pipe (11)1The distance between the C connecting pipe (14) and the outer wall close to the S connecting pipe (13) is equal to the diameter D of the D connecting pipe (11)1A length L of the slider (20) on the side of the fluid passage (202)2=2D1+D2。
Further, the isolation cavity (201) is located on the side of the D connecting pipe (11), and the fluid channel (202) is located on the side of the E connecting pipe (12), the S connecting pipe (13) and the C connecting pipe (14); the slider (20), the isolation chamber (201) and the fluid channel (202) have a first position for communication between the E connection tube (12) and the S connection tube (13) and communication between the D connection tube (11) and the C connection tube (14); the slider (20), the isolation chamber (201), and the fluid channel (202) have a second position where the E connection tube (12) and the C connection tube (14) are both in communication with the S connection tube (13) and neither the E connection tube (12) nor the C connection tube (14) is in communication with the D connection tube (11); the slider (20), the isolation chamber (201), and the fluid channel (202) have a third position that allows communication between the E connection tube (12) and the D connection tube (11) and communication between the S connection tube (13) and the C connection tube (14).
Further, when the sliding block (20) is located at the first position, the fluid channel (202) is communicated with the E connecting pipe (12) and the S connecting pipe (13); when the sliding block (20) is located at the second position, the fluid channel (202) is communicated with the E connecting pipe (12), the S connecting pipe (13) and the C connecting pipe (14), and the isolation cavity (201) blocks the D connecting pipe (11) to ensure that the D connecting pipe is not communicated with the E connecting pipe (12), the S connecting pipe (13) and the C connecting pipe (14); when the slide block (20) is located at the third position, the fluid channel (202) is communicated with the S connecting pipe (13) and the C connecting pipe (14).
Further, the pressure relief assembly (40) comprises a pressure relief valve plate (41), a valve plate lift limiter (42) and a fixing device (43); the pressure relief valve plate (41) is arranged on the side of the fluid channel (202) beside the pressure relief hole (203), tightly attached to the sliding block (20) to block the pressure relief hole (203), one end of the pressure relief valve plate (41) is fixed on the sliding block (20) beside the pressure relief hole (203), and the other end is free; the valve plate lift limiter (42) is installed on the outer side of the pressure relief valve plate (41), one end of the valve plate lift limiter tightly presses the pressure relief valve plate (41), and the other end of the valve plate lift limiter is separated from the pressure relief valve plate (41) by 3-5 mm; the fixing device (43) is arranged beside the pressure relief hole (203) on the sliding block (20) and fixes the close-contact end of the pressure relief valve plate (41) and the valve plate lift limiter (42) on the sliding block (20).
Further, the pressure relief valve plate (41) is a reed valve and is made of an elastic thin steel sheet; the fastening device (43) can be a screw or rivet fastening.
Further, the main valve body (10) is provided with a first opening communicated with the first valve chamber (15) and a second opening communicated with the second valve chamber (16).
Adopt the produced beneficial effect of above-mentioned scheme to lie in: when the four-way valve is reversed, the sliding block (20) is located in the middle, the E connecting pipe (12) is communicated with the S connecting pipe (13) and the C connecting pipe (14) through the three pipelines, but the sliding block (20) and the isolation cavity (201) block the D connecting pipe (11) to enable the D connecting pipe not to be communicated with the ESC three connecting pipes, the situation that the four ESCD pipes are communicated with each other cannot exist, and therefore the phenomenon of air leakage is avoided. At the moment, the pressure in the valve cavity is possibly and rapidly increased due to the fact that the D connecting pipe (11) is blocked or other reasons, the pressure relief assembly (40) acts, the pressure relief valve plate (41) is opened to be located at the pressure relief position, pressure relief is carried out stably, and the sliding block (20) and the four-way valve are prevented from being damaged due to ultrahigh pressure in the four-way valve.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic diagram of the operation of a four-way valve of the prior art;
fig. 2 is a schematic structural diagram of the present invention;
FIG. 3 is a schematic view of the present invention during cooling operation;
fig. 4 is a schematic view of the present invention reversing to an intermediate position;
fig. 5 is a schematic view of the present invention during heating operation;
FIG. 6 is a schematic structural view of the pressure relief assembly of the present invention during normal operation;
fig. 7 is a schematic structural view of the pressure relief assembly in a pressure relief state.
The reference numbers of the above figures are as follows:
01. the lift control valve comprises a main valve body, 02, a valve chamber, 03, a D connecting pipe, 04, an E connecting pipe, 05, an S connecting pipe, 06, a C connecting pipe, 07, a sliding block, 08, a chamber body, 09, a piston, 10, a main valve body, 11, a D connecting pipe, 12, an E connecting pipe, 13, an S connecting pipe, 14, a C connecting pipe, 15, a first valve chamber, 16, a second valve chamber, 20, a sliding block, 201, an isolation chamber, 202, a fluid channel, 203, a pressure relief hole, 21, a bracket, 22, a first piston, 23, a second piston, 30, an electromagnetic coil, 31, a sliding valve, 32, a first capillary tube, 33, a first capillary tube, 40, a pressure relief assembly, 41, a pressure relief valve plate, 42, a valve plate limiter, 43 and a lift.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The embodiment of the utility model provides a four-way valve for an air conditioner, refer to fig. 2-7, including main valve body (10), sliding assembly, many connecting pipes, pressure relief assembly (40); a valve cavity is arranged in the main valve body (10), the sliding assembly is arranged in the valve cavity and comprises a sliding block (20), a support (21), a first piston (22) and a second piston (23), the sliding block (20) is connected to the support (21), the first piston (22) and the second piston (23) are connected to two sides of the support (21), the sliding assembly divides two ends of the valve cavity into a first valve chamber (15) and a second valve chamber (16) which are mutually independent, and the sliding block (20) is axially movably arranged in the valve cavity; the slider (20) is provided with an isolation cavity (201) and a fluid channel (202) along the radial two sides, and a pressure relief hole (203) for communicating the isolation cavity (201) and the fluid channel (202) is arranged on the slider; the connecting pipes are communicated with a valve cavity of the main valve body (10), and comprise an E connecting pipe (12) which is arranged on the main valve body (10) along the axial direction of the main valve body (10) and communicated with a heat exchanger of an indoor unit of an air conditioner, an S connecting pipe (13) which is communicated with an air suction pipe of a compressor, a C connecting pipe (14) which is communicated with a heat exchanger of an outdoor unit of the air conditioner, and a D connecting pipe (11) which is connected to the main valve body (10) and is arranged opposite to the S connecting pipe (13) and communicated with an exhaust port of the compressor; the pressure relief assembly (40) is mounted beside a pressure relief hole (203) on the fluid passage (202) side of the slider (20), and the pressure relief assembly (40) has a blocking position for blocking the pressure relief hole (203) and a pressure relief position for opening the pressure relief hole (203).
Preferably, the diameters of the E connecting pipe (12), the S connecting pipe (13) and the C connecting pipe (14) are all equal, and the length L of the sliding block (20) on the side of the isolation cavity (201)1Equal to the diameter D of the connecting pipe (11)1Diameter D of the pipe (12) connected with E2Summing; the distance between the connection pipe (12) E and the outer wall close to the connection pipe (13) S is equal to the diameter D of the connection pipe (11)1The distance between the C connecting pipe (14) and the outer wall close to the S connecting pipe (13) is equal to the diameter D of the D connecting pipe (11)1Length L of the slider 20 on the side of the fluid passage 2022=2D1+D2. By adopting the size, when the four-way valve is reversed to the middle position, as shown in figure 4, at the moment, the connecting pipes E (12), the connecting pipe S (13) and the connecting pipe C (14) are mutually communicated through the fluid channel (202), and the high-pressure exhaust of the compressor enters the isolation cavity (201) from the connecting pipe D (11) and then is isolated by the sliding block (20) and is not communicated with the connecting pipes E (12), the connecting pipe S (13) and the connecting pipe C (14), thereby avoiding the situation that the three connecting pipes E (12), the connecting pipe S (13) and the connecting pipe C (14)The generation of the phenomenon of gas cross-ventilation.
Preferably, the isolation cavity (201) is positioned on the side of the D connecting pipe (11), and the fluid channel (202) is positioned on the sides of the E connecting pipe (12), the S connecting pipe (13) and the C connecting pipe (14); the sliding block (20), the isolation cavity (201) and the fluid channel (202) are provided with a first position enabling communication between the E connecting pipe (12) and the S connecting pipe (13) and communication between the D connecting pipe (11) and the C connecting pipe (14); the sliding block (20), the isolation cavity (201) and the fluid channel (202) are provided with second positions which enable the E connecting pipe (12) and the C connecting pipe (14) to be communicated with the S connecting pipe (13) and enable the E connecting pipe (12) and the C connecting pipe (14) not to be communicated with the D connecting pipe (11); the slider (20), the isolation chamber (201), and the fluid channel (202) have a third position that allows communication between the E connection pipe (12) and the D connection pipe (11) and communication between the S connection pipe (13) and the C connection pipe (14).
Preferably, when the slide block (20) is located at the first position, the fluid channel (202) is communicated with the E connecting pipe (12) and the S connecting pipe (13); when the sliding block (20) is located at the second position, the fluid channel (202) is communicated with the E connecting pipe (12), the S connecting pipe (13) and the C connecting pipe (14), and the D connecting pipe (11) is blocked by the isolation cavity (201) to be not communicated with the E connecting pipe (12), the S connecting pipe (13) and the C connecting pipe (14); when the slide block (20) is located at the third position, the fluid channel (202) is communicated with the S connecting pipe (13) and the C connecting pipe (14).
When the slider (20) is in the first position, as shown in fig. 3, the air conditioner is in the cooling mode. When the slider (20) is in the second position, as shown in fig. 4, the air conditioner is in transition from the cooling mode to the heating mode while the slider (20) is sliding. When the slider (20) is located at the third position, as shown in fig. 5, the air conditioner is in a heating mode.
When the sliding block (20) is located at the second position, namely the middle position, as shown in figure 4, at the moment, the connecting pipes E (12), S (13) and C (14) are mutually communicated through the fluid channel (202), high-pressure exhaust of the compressor enters the isolation cavity (201) from the connecting pipe D (11) and then is isolated by the sliding block (20), the high-pressure exhaust of the compressor is not communicated with the connecting pipes E (12), S (13) and C (14), and the condition that four ESCD (electronic stability control) pipes are mutually communicated can not exist, so that the phenomenon of air leakage is avoided. However, at this time, since the high-pressure exhaust gas of the compressor enters the isolation cavity (201) from the D connecting pipe (11) and is blocked by the sliding block (20), if the moving speed of the sliding block (20) is not rapid, the pressure in the isolation cavity (201) may be increased sharply, even when the pressure is increased to a certain degree, the gas is liquefied and changed into liquid, the sliding block (20) is subjected to liquid impact, and the sliding block (20) and the four-way valve may be damaged. In order to avoid the generation of the phenomenon, the utility model discloses pressure release subassembly (40) has been set up.
Preferably, the pressure relief assembly (40) comprises a pressure relief valve plate (41), a valve plate lift limiter (42) and a fixing device (43); the pressure relief valve plate (41) is arranged on the side of a fluid channel (202) beside the pressure relief hole (203), the pressure relief hole (203) is blocked by the close-fitting slide block (20), one end of the pressure relief valve plate (41) is fixed on a valve seat beside the pressure relief hole (203), namely the slide block (20), and the other end is free; the valve plate lift limiter (42) is arranged on the outer side of the pressure relief valve plate (41), one end of the valve plate lift limiter tightly presses the pressure relief valve plate (41), and the other end of the valve plate lift limiter is separated from the pressure relief valve plate (41) by 3-5 mm; the fixing device (43) is arranged beside the pressure relief hole (203) on the sliding block (20) and is used for fixing the pressure relief valve plate (41) and the valve plate lift limiter (42) on the sliding block (20) in a close attaching mode.
Preferably, the pressure relief valve plate (41) is a reed valve and is made of an elastic thin steel sheet; the fixing device (43) can be fixed by bolts or rivets.
When the four-way valve works normally, as shown in fig. 6, the pressure relief assembly (40) cannot act, the pressure relief valve plate (41) has certain elasticity and is tightly attached to the valve seat, namely the sliding block (20), so that the pressure relief hole (203) is blocked, and the upper space and the lower space of the sliding block (20), namely the isolation cavity (201) and the fluid channel (202) are isolated. However, when the slider (20) is located at the second position, i.e., the middle position, as shown in fig. 4, the pressure in the isolation cavity (201) may be increased sharply due to some special reasons, when the pressure difference between the two sides of the pressure relief valve plate (41) is large to a certain extent and exceeds the elasticity of the valve plate, the free end of the valve plate is pushed away from the valve seat, i.e., the slider (20) under the action of high-pressure gas, and is tightly attached to the valve plate lift limiter (42), and the gas enters the fluid channel (202) from the side gap of the valve plate to leak the high pressure, so that the slider (20) and the four-way valve are prevented. When the pressure difference between the two sides of the pressure relief valve plate (41) disappears, the valve plate returns to the closing position under the action of the elasticity of the valve plate, and the four-way valve works normally.
Preferably, the main valve body (10) is provided with a first opening communicating with the first valve chamber (15) and a second opening communicating with the second valve chamber (16).
As can be seen from the above description, the above-mentioned embodiments of the present invention achieve the following technical effects: when the four-way valve is reversed, the sliding block (20) is located in the middle, the E connecting pipe (12) is communicated with the S connecting pipe (13) and the C connecting pipe (14) through the three pipelines, but the sliding block (20) and the isolation cavity (201) block the D connecting pipe (11) to enable the D connecting pipe not to be communicated with the ESC three connecting pipes, the situation that the four ESCD pipes are communicated with each other cannot exist, and therefore the phenomenon of air leakage is avoided. At the moment, the pressure in the valve cavity is possibly and rapidly increased due to the fact that the D connecting pipe (11) is blocked or other reasons, the pressure relief assembly (40) acts, the pressure relief valve plate (41) is opened to be located at the pressure relief position, pressure relief is carried out stably, and the sliding block (20) and the four-way valve are prevented from being damaged due to ultrahigh pressure in the four-way valve.
The above only is the preferred embodiment of the present invention, it is not right the scope of the present invention is limited, all are in the design spirit and principle of the present invention, right the technical solution of the present invention does any modification, equivalent replacement, improvement, etc., all should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides an idle call cross valve which characterized in that: comprises a main valve body (10), a sliding component, a plurality of connecting pipes and a pressure relief component (40);
a valve cavity is arranged in the main valve body (10), the sliding assembly is arranged in the valve cavity and comprises a sliding block (20), a support (21), a first piston (22) and a second piston (23), the sliding block (20) is connected to the support (21), the first piston (22) and the second piston (23) are connected to two sides of the support (21), the sliding assembly divides two ends of the valve cavity into a first valve chamber (15) and a second valve chamber (16) which are mutually independent, and the sliding block (20) is axially movably arranged in the valve cavity; the sliding block (20) is provided with an isolation cavity (201) and a fluid channel (202) along two sides of the radial direction of the valve cavity, and a pressure relief hole (203) for communicating the isolation cavity (201) with the fluid channel (202) is formed in the sliding block;
the connecting pipes are communicated with a valve cavity of the main valve body (10), and comprise an E connecting pipe (12) which is arranged on the main valve body (10) along the axial direction of the main valve body (10) and communicated with a heat exchanger of an indoor unit of an air conditioner, an S connecting pipe (13) which is communicated with an air suction pipe of a compressor, a C connecting pipe (14) which is communicated with a heat exchanger of an outdoor unit of the air conditioner, and a D connecting pipe (11) which is connected to the main valve body (10) and is arranged opposite to the S connecting pipe (13) and communicated with an exhaust port of the compressor;
the pressure relief assembly (40) is mounted beside the pressure relief hole (203) on the fluid channel (202) side of the slider (20), and the pressure relief assembly (40) has a blocking position for blocking the pressure relief hole (203) and a pressure relief position for opening the pressure relief hole (203).
2. The four-way valve for air conditioners of claim 1, wherein:
the diameters of the E connecting pipe (12), the S connecting pipe (13) and the C connecting pipe (14) are equal, and the length L of the sliding block (20) on the side of the isolation cavity (201)1Is equal to the diameter D of the D connecting pipe (11)1Diameter D of the E connecting pipe (12)2Summing;
the distance between the E connecting pipe (12) and the outer wall close to the S connecting pipe (13) is equal to the diameter D of the D connecting pipe (11)1The distance between the C connecting pipe (14) and the outer wall close to the S connecting pipe (13) is equal to the diameter D of the D connecting pipe (11)1A length L of the slider (20) on the side of the fluid passage (202)2=2D1+D2。
3. A four-way valve for an air conditioner according to claim 1 or claim 2, wherein:
the isolation cavity (201) is positioned on the side of the D connecting pipe (11), and the fluid channel (202) is positioned on the sides of the E connecting pipe (12), the S connecting pipe (13) and the C connecting pipe (14);
the slider (20), the isolation chamber (201) and the fluid channel (202) have a first position for communication between the E connection tube (12) and the S connection tube (13) and communication between the D connection tube (11) and the C connection tube (14);
the slider (20), the isolation chamber (201), and the fluid channel (202) have a second position where the E connection tube (12) and the C connection tube (14) are both in communication with the S connection tube (13) and neither the E connection tube (12) nor the C connection tube (14) is in communication with the D connection tube (11);
the slider (20), the isolation chamber (201), and the fluid channel (202) have a third position that allows communication between the E connection tube (12) and the D connection tube (11) and communication between the S connection tube (13) and the C connection tube (14).
4. A four-way valve for an air conditioner according to claim 3, wherein:
when the sliding block (20) is located at the first position, the fluid channel (202) is communicated with the E connecting pipe (12) and the S connecting pipe (13);
when the sliding block (20) is located at the second position, the fluid channel (202) is communicated with the E connecting pipe (12), the S connecting pipe (13) and the C connecting pipe (14), and the isolation cavity (201) blocks the D connecting pipe (11) to ensure that the D connecting pipe is not communicated with the E connecting pipe (12), the S connecting pipe (13) and the C connecting pipe (14);
when the slide block (20) is located at the third position, the fluid channel (202) is communicated with the S connecting pipe (13) and the C connecting pipe (14).
5. The four-way valve for air conditioners of claim 1, wherein: the pressure relief assembly (40) comprises a pressure relief valve plate (41), a valve plate lift limiter (42) and a fixing device (43);
the pressure relief valve plate (41) is arranged on the side of the fluid channel (202) beside the pressure relief hole (203), tightly attached to the sliding block (20) to block the pressure relief hole (203), one end of the pressure relief valve plate (41) is fixed on the sliding block (20) beside the pressure relief hole (203), and the other end is free;
the valve plate lift limiter (42) is installed on the outer side of the pressure relief valve plate (41), one end of the valve plate lift limiter tightly presses the pressure relief valve plate (41), and the other end of the valve plate lift limiter is separated from the pressure relief valve plate (41) by 3-5 mm;
the fixing device (43) is arranged beside the pressure relief hole (203) on the sliding block (20) and fixes the close-contact end of the pressure relief valve plate (41) and the valve plate lift limiter (42) on the sliding block (20).
6. The four-way valve for air conditioners of claim 5, wherein: the pressure relief valve plate (41) is a reed valve and is made of an elastic thin steel sheet; the fastening device (43) can be a screw or rivet fastening.
7. The four-way valve for air conditioners of claim 1, wherein: the main valve body (10) is provided with a first opening communicated with the first valve chamber (15) and a second opening communicated with the second valve chamber (16).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921433469.9U CN210510379U (en) | 2019-08-30 | 2019-08-30 | Four-way valve for air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921433469.9U CN210510379U (en) | 2019-08-30 | 2019-08-30 | Four-way valve for air conditioner |
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| CN201921433469.9U Active CN210510379U (en) | 2019-08-30 | 2019-08-30 | Four-way valve for air conditioner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110410533A (en) * | 2019-08-30 | 2019-11-05 | 邵阳学院 | A kind of idle call four-way valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110410533A (en) * | 2019-08-30 | 2019-11-05 | 邵阳学院 | A kind of idle call four-way valve |
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