Novel four-way reversing valve of air conditioner

Abstract

A novel four-way reversing valve of an air conditioner relates to the technical field of control valves. Comprising a valve body with an opening in the upper end, the opening end of the valve body is connected with a valve cover in a sealed mode, a compressor air outlet connector is arranged on the valve cover, and a compressor air inlet connector, an air return connector and a condenser connecting connector are arranged at the bottom of the valve body. A valve element matched with the valve body in a rotating mode is arranged in the valve body, a sealing face is formed between the bottom of the valve element and the valve body, a valve element spring is arranged between the valve element and the valve cover, and a high-pressure air chamber is formed between the top end of the valve element and the valve body. A communicating hole penetrating through the valve element in the axial direction is formed in the valve element, and an arc-shaped groove is formed in the bottom of the valve element; switching between refrigeration and heating is achieved through rotation of the valve element, the sealing face of the valve element is tightly pressed on the sealing face of the low-pressure side of the valve element from the high-pressure side through system pressure difference, the sealing faces are made to be in a better sealing state, and the leakage problem existing when an output shaft of a driving motor is communicated with a system is well solved; and the blow-by problem is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of control valves, and particularly to a new four-way reversing valve for air conditioners. Background Technique

[0002] The new four-way reversing valve of traditional hot and cold air conditioners has problems such as jamming, and the slider is prone to gas leakage and jamming and not switching. When the solenoid valve conversion coil switches to heating, the electromagnetic coil must be continuously powered to maintain the switching state. Once the coil is open, it will return to the cooling state and cannot heat and transport air. When there is gas leakage, the position of the slider cannot be adjusted and repaired, and only the reversing valve can be replaced. The replacement operation requires strong professional skills. Content of the Utility Model

[0003] The purpose of the utility model is to provide a new four-way reversing valve for air conditioners, which can effectively solve the problems in the background technique.

[0004] The technical solution to achieve the above purpose is: a new four-way reversing valve for air conditioners, characterized in that: it includes a valve body with an open upper end, the open end of the valve body is hermetically connected with a valve cover, a compressor air outlet interface is arranged on the valve cover, and a compressor air inlet interface, a return air interface, and a condenser connection interface are arranged at the bottom of the valve body;

[0005] A valve core rotatably matched with the valve body is arranged in the valve body, a sealing surface is formed between the bottom of the valve core and the valve body, a valve core spring is arranged between the valve core and the valve cover, and a high-pressure air chamber is formed between the top end of the valve core and the valve body;

[0006] A driving motor connected to the valve core is installed at the bottom end of the valve body, a communication hole axially penetrating the valve core and communicating with the high-pressure air chamber is arranged on the valve core, and an arc-shaped groove is arranged at the bottom of the valve core;

[0007] The driving motor is used to drive the valve core to rotate, so that when the air conditioner is refrigerating, the return air interface is communicated with the compressor air inlet interface through the arc-shaped groove at the bottom of the valve core, and the condenser connection interface is communicated with the high-pressure air chamber through the communication hole; when the air conditioner is heating, the return air interface is communicated with the high-pressure air chamber through the communication hole, and the compressor air inlet interface is communicated with the condenser connection interface through the arc-shaped groove at the bottom of the valve core.

[0008] Further, the compressor air inlet interface, the return air interface, and the condenser connection interface are located on the same circumference with the rotation center of the valve body as the center of the circle. The compressor air inlet interface is arranged between the return air interface and the condenser connection interface, and is respectively spaced 90° from the return air interface and the condenser;

[0009] There are two of the said communication holes, and they are located on the same circumference as the bottom arc-shaped groove of the valve core. The two communication holes and the bottom arc-shaped groove are arranged at an interval of 90°; the circumference formed by the communication holes and the bottom arc-shaped groove has the same diameter as the circumference formed by the compressor air inlet interface, the air return interface, and the condenser connection interface.

[0010] When the air conditioner is in the cooling mode, the bottom arc-shaped groove corresponds to and communicates with the compressor air inlet interface and the air return interface. One of the communication holes communicates with the condenser connection interface, and the other communication hole is in sealing cooperation with the bottom surface of the valve body. When the air conditioner is in the cooling mode, the valve core rotates 90°, so that the bottom arc-shaped groove corresponds to and communicates with the compressor air inlet interface and the condenser connection interface; the communication hole sealed with the valve body rotates to communicate with the air return interface, and the other communication hole rotates to be sealed with the valve body.

[0011] Furthermore, the output shaft of the driving motor is sealed by a stuffing box sealing mechanism fixedly arranged at the bottom end of the valve body.

[0012] The utility model realizes the switching between cooling and heating by rotating the valve core, and uses the system pressure difference to tightly press the sealing surface of the valve core on the sealing surface of the low-pressure side of the valve core from the high-pressure side, so that the sealing surface forms a better sealing state, which well solves the leakage problem existing in the connection between the output shaft of the driving motor and the system, and there will be no gas leakage problem.

[0013] When the system operates in the cold and hot modes, the valve core driving motor only rotates 90°, there are no problems such as jamming and failure to switch, and after the switching is completed, no status maintenance current is required, which saves energy and reduces consumption. Description of the Drawings

[0014] Figure 1 is a structural schematic diagram of the utility model;

[0015] Figure 2 is a sectional view of the utility model in the cooling state;

[0016] Figure 3 is a sectional view of the utility model in the cooling state;

[0017] Figure 4 is a top view of the valve core;

[0018] Figure 5 is a bottom view of the valve core;

[0019] Figure 6 is a distribution diagram of the compressor air inlet interface, the air return interface, and the condenser connection interface on the valve body;

[0020] Figure 7 is a position relationship diagram of the valve core and the valve body in the cooling state;

[0021] Figure 8Position relationship diagram of the valve core and the valve body in the heating state. Detailed implementation mode

[0022] As Figures 1-6 shown, the utility model includes a valve body 1 with an open upper end. A valve cover 2 is sealingly connected to the open end of the valve body 1. A compressor air outlet interface 3 is arranged on the valve cover 2. A compressor air inlet interface 4, a return air interface 5, and a condenser connection interface 6 are arranged at the bottom of the valve body 1.

[0023] A valve core 7 that is rotationally matched with the valve body 1 is arranged inside the valve body 1. The valve core 7 is cylindrical. A sealing surface is formed between the bottom of the valve core 7 and the valve body 1. A valve core spring 12 is arranged between the valve core 7 and the valve cover 2 to make the sealing surface between the valve core 7 and the valve body 1 fit tightly. A high-pressure air chamber 8 is formed between the top end of the valve core 7 and the valve body 1.

[0024] A driving motor 8 whose output shaft is connected to the center of the bottom end of the valve core 7 is installed at the bottom end of the valve body 1. The output shaft of the driving motor 8 is sealed by a packing sealing mechanism 9 fixedly arranged at the bottom end of the valve 1 body. The packing sealing mechanism belongs to the existing well-known technology, and the specific structure layout will not be elaborated.

[0025] An arc-shaped groove 11 is formed at the bottom of the valve core 1, and a communication hole 10 that axially penetrates the valve core 1 and communicates with the high-pressure air chamber 8 is provided. There are two communication holes 10, and they and the arc-shaped groove at the bottom of the valve core 1 are located on the same circumference centered on the rotation center of the valve body 1. The two communication holes 10 and the bottom arc-shaped groove 11 are respectively arranged at an interval of 90°.

[0026] The compressor air inlet interface 4, the return air interface 5, and the condenser connection interface 6 are located on the same circumference centered on the rotation center of the valve body 1. The compressor air inlet interface 4 is arranged between the return air interface 5 and the condenser connection interface 6, and is respectively spaced 90° from the return air interface 5 and the condenser 6.

[0027] The circumferences formed by the communication holes 10 and the bottom arc-shaped groove 11 have the same diameter as the circumference formed by the compressor air inlet interface 4, the return air interface 5, and the condenser connection interface 6.

[0028] As Figure 2 、 7 shown, when the air conditioner is refrigerating, the bottom arc-shaped groove 11 corresponds to and communicates with the compressor air inlet interface 4 and the return air interface 5. One of the communication holes 10 communicates with the condenser connection interface 6, and the other communication hole 10 is in sealing cooperation with the bottom surface of the valve body 1.

[0029] As Figure 3 、 8As shown in the figure, when the air conditioner is in the heating mode, the drive motor drives the valve core to rotate counterclockwise by 90° against the valve core 7, so that the bottom arc-shaped groove 11 corresponds to the compressor intake interface 4 and the condenser connection interface 6 in position and is interconnected; the communication hole 10 sealed with the valve body rotates to communicate with the return air interface 5, and the other communication hole 10 is sealed with the valve body 1.

Claims

1. A new four-way reversing valve for air conditioning, characterized by: It comprises a valve body with an upper opening, the open end of the valve body is sealedly connected to a valve cover, a compressor air outlet interface is arranged on the valve cover, and a compressor air inlet interface, a return air interface, and a condenser connection interface are arranged at the bottom of the valve body; A valve core is arranged in the valve body and is rotatably matched with the valve body. A sealing surface is formed between the bottom of the valve core and the valve body. A valve core spring is arranged between the valve core and the valve cover. A high-pressure air chamber is formed between the top of the valve core and the valve body. A driving motor connected to the valve core is installed at the bottom end of the valve body. The valve core is provided with a connecting hole that axially penetrates the valve core and communicates with the high-pressure air chamber. An arc-shaped groove is provided at the bottom of the valve core. The driving motor is used to drive the valve core to rotate, so that when the air conditioner is cooling, the return air interface is connected to the compressor air inlet interface through the arc-shaped groove at the bottom of the valve core, and the condenser connection interface is connected to the high-pressure air chamber through the connecting hole; when the air conditioner is heating, the return air interface is connected to the high-pressure air chamber through the connecting hole, and the compressor air inlet interface is connected to the condenser connection interface through the arc-shaped groove at the bottom of the valve core.

2. A novel four-way reversing valve for air conditioning according to claim 1, characterized in that: The compressor air inlet interface, the return air interface, and the condenser connection interface are located on the same circumference with the rotation center of the valve body as the center of the circle. The compressor air inlet interface is arranged between the return air interface and the condenser connection interface, and is spaced 90° from the return air interface and the condenser respectively; The communicating holes are provided with two and are located on the same circumference as the arc-shaped groove at the bottom of the valve core. The two communicating holes and the arc-shaped groove at the bottom are arranged at an interval of 90 degrees. The circumference formed by the communicating holes and the arc-shaped groove at the bottom has the same diameter as the circumference formed by the compressor air inlet interface, the return air interface, and the condenser connection interface. When the air conditioner is in cooling mode, the arc-shaped groove at the bottom corresponds to the position of the compressor air inlet interface and the return air interface and are interconnected. One of the connecting holes is connected to the condenser connection interface, and the other connecting hole is sealed with the bottom surface of the valve body. When the air conditioner is in heating mode, the valve core rotates 90° so that the arc-shaped groove at the bottom corresponds to the position of the compressor air inlet interface and the condenser connection interface and are interconnected; the connecting hole sealed with the valve body is rotated to be connected with the return air interface, and the other connecting hole is rotated to be sealed with the valve body.

3. The novel four-way reversing valve for air conditioning according to claim 1, characterized in that: The output shaft of the driving motor is sealed by a packing sealing mechanism fixedly arranged at the bottom end of the valve body.

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