A compressor cylinder with a solenoid valve and a method for reducing cylinder resistance

Abstract

The present invention provides a compressor cylinder with a solenoid valve and a cylinder drag reduction method, which includes a compressor housing, a liquid receiver, an eccentric rotor, a crankshaft and a sliding vane. The eccentric rotor is embedded inside the compressor housing. The sliding vane is slidably arranged on the lower side of the inner wall of the compressor housing. A drag reduction mechanism is arranged on the lower side of the sliding vane. The crankshaft is arranged inside the eccentric rotor. A liquid receiver is installed outside the compressor housing. A gas guiding mechanism is arranged between the liquid receiver and the compressor housing. The problem that the spring resistance of the sliding vane in the conventional compressor cylinder cannot be offset is solved. The structure of the present invention is reasonable. The suction pressure on the low-pressure side of the liquid receiver and the exhaust pressure difference on the high-pressure side inside the compressor housing are used to offset the sliding vane spring resistance during the operation of the eccentric rotor, thereby reducing the input power and improving the energy efficiency.

Description

Technical Field

[0001] The present invention relates to a compressor cylinder with a solenoid valve and a cylinder drag reduction method, belonging to the technical field of compressors. Background Art

[0002] The compressor is regarded as the heart of the refrigeration system, and the specific term that best represents the characteristics of the compressor is called a "vapor pump". The actual responsibility of the compressor is to increase the pressure and raise the suction pressure state to the discharge pressure state.

[0003] Refer to Figure 5 , during the stage when the existing compressor housing 1 operates from the position where the compression amount of the sliding vane spring 401 is the smallest to the position where the compression amount of the sliding vane spring 401 is the largest, the resistance suffered by the eccentric rotor 102 includes refrigerant load, frictional resistance, and the resistance of the sliding vane spring 401. Especially during the compression stage of the sliding vane spring 401, as the compression amount of the sliding vane spring 401 increases, the resistance of the sliding vane spring 401 increases, which is one of the reasons for the increase in the input power of the compressor; there is an urgent need for a compressor cylinder with a solenoid valve and a cylinder drag reduction method to solve the above-mentioned problems. Summary of the Invention

[0004] Aiming at the deficiencies existing in the prior art, the purpose of the present invention is to provide a compressor cylinder with a solenoid valve and a cylinder drag reduction method to solve the problems proposed in the above background art. The structure of the present invention is reasonable, and the suction pressure on the low-pressure side of the liquid receiver and the discharge pressure difference on the high-pressure side inside the compressor housing are used to offset the resistance of the sliding vane spring during the operation of the eccentric rotor, thereby reducing the input power and improving the energy efficiency.

[0005] In order to achieve the above purpose, the present invention is realized through the following technical solutions: A compressor cylinder with a solenoid valve and a cylinder drag reduction method, including a compressor housing, a liquid receiver, an eccentric rotor, a crankshaft, and a sliding vane. The eccentric rotor is embedded inside the compressor housing. The sliding vane is slidably arranged on the lower side of the inner wall of the compressor housing. A drag reduction mechanism is arranged on the lower side of the sliding vane. The crankshaft is arranged inside the eccentric rotor. A liquid receiver is installed outside the compressor housing. A gas guiding mechanism is arranged between the liquid receiver and the compressor housing;

[0006] The drag reduction mechanism includes a sliding vane spring, a cylindrical box, a sliding cover, and a sliding cover spring. The cylindrical box is hermetically fixed below the sliding vane. The sliding cover is slidably arranged on the top of the cylindrical box. The sliding cover spring is arranged on the lower side of the sliding cover. The sliding vane spring is arranged between the sliding cover and the sliding vane.

[0007] Furthermore, the gas guiding mechanism includes a three-way solenoid valve, and a compressor housing branch, a liquid receiver branch, and a cylindrical box branch connected to the three interfaces of the three-way solenoid valve.

[0008] Further, the other end of the compressor housing branch is communicated with the high-pressure side inside the compressor housing, the other end of the liquid receiver branch is communicated with the low-pressure side inside the liquid receiver, and the other end of the cylindrical box branch is communicated with the inside of the cylindrical box.

[0009] Further, a sealing rubber ring is provided at the edge of the sliding cover.

[0010] Further, the inner diameter of the eccentric rotor is larger than the diameter of the crankshaft.

[0011] Further, an air inlet and an air outlet are respectively provided on both sides of the compressor housing where the sliding vane is located, and a triangular mounting bracket is provided outside the compressor housing.

[0012] Further, a method for reducing the resistance of the cylinder of a compressor cylinder with an electromagnetic valve according to the present invention includes the following steps:

[0013] Step A, Cylindrical box installation:

[0014] Step A1, After the sliding cover is inserted into the sliding cover spring, it is inserted into the cylinder from the top of the cylindrical box, and the top of the sliding cover is connected to the sliding vane through the sliding vane spring;

[0015] Step A2, The bottom of the cylindrical box is connected to the three-way solenoid valve through the cylindrical box branch, the high-pressure side inside the compressor housing is connected to the three-way solenoid valve through the compressor housing branch, and the low-pressure side inside the liquid receiver is connected to the three-way solenoid valve through the liquid receiver branch;

[0016] Step A3, Insert the cylindrical box into the cylinder at the tail of the sliding vane spring;

[0017] Step B, Offset the resistance when the sliding vane is compressed:

[0018] Step B1, When the compressor is running, the crankshaft drives the eccentric rotor to rotate clockwise under the centrifugal force. When the sliding vane spring moves from the maximum compression position to the minimum compression position, the three-way solenoid valve is communicated with the high-pressure side inside the compressor housing to balance the force on the sliding vane spring;

[0019] Step B2, When the sliding vane spring moves from the minimum compression position to the maximum compression position, the three-way solenoid valve is communicated with the low-pressure side inside the liquid receiver, so the inside of the cylindrical box also remains at a low pressure;

[0020] Step B3: According to Step B2, but at this time, the sliding vane spring is in the external environment of the compressor housing, that is, the high-pressure side of the compressor housing. In this way, an obvious pressure difference is formed between the inside and outside of the cylindrical box, that is: the pressure difference δF between the exhaust pressure and the suction pressure of the compressor housing. The pressure formed by this pressure difference δF is opposite to the elastic force F of the sliding vane spring and greater than the elastic force F of the sliding vane spring; during the compression and exhaust stage of the compressor housing, the elastic force F of the sliding vane spring is a resistance. Now, the formed pressure difference δF is opposite to the elastic force F of the sliding vane spring in direction, so it can offset the elastic force F of the sliding vane spring, that is, reduce the resistance in the exhaust compression stage of the compressor housing. The offset resistance is F'=(F - δF) < F. Therefore, the input power of the compressor housing is reduced and the energy efficiency of the compressor is improved.

[0021] Advantages of the present invention:

[0022] 1. The present invention uses a three-way solenoid valve for high and low pressure switching control. When the eccentric rotor in the compressor rotates, when the sliding vane spring moves from the maximum compression position to the minimum compression position, the three-way solenoid valve is connected to the high-pressure side inside the compressor housing, making the spring force balanced;

[0023] 2. When the sliding vane spring moves from the minimum compression position to the maximum compression position, the three-way solenoid valve is connected to the low-pressure side of the liquid receiver, and a pressure difference can be formed at the tail of the sliding vane spring, thereby forming a thrust opposite to the resistance of the sliding vane spring, offsetting part of the resistance of the sliding vane spring that the compressor receives during the stage when the sliding vane spring moves from the minimum compression position to the maximum compression position, thereby reducing the power and improving the energy efficiency of the compressor;

[0024] 3. Utilize the pressure difference between the suction pressure of the low-pressure side of the liquid receiver and the exhaust pressure of the high-pressure side inside the compressor housing to offset the resistance of the sliding vane spring during the rotation of the eccentric rotor, thereby reducing the input power and improving the energy efficiency. Description of the Drawings

[0025] By reading the detailed description of the non-limiting embodiments with reference to the following drawings, other features, objectives and advantages of the present invention will become more obvious:

[0026] Figure 1 It is a schematic structural diagram of a compressor cylinder with a solenoid valve and a cylinder resistance reduction method of the present invention;

[0027] Figure 2 It is a partial cross-sectional view of a compressor cylinder with a solenoid valve of the present invention;

[0028] Figure 3 For Figure 2 An enlarged view of Step A in

[0029] Figure 4 It is a schematic diagram of the principle of the resistance reduction mechanism in a compressor cylinder with a solenoid valve of the present invention;

[0030] Figure 5 It is a structural diagram of an existing compressor cylinder sliding vane and vane spring;

[0031] In the figure: 1 compressor housing, 101 air inlet, 102 eccentric rotor, 103 crankshaft, 104 sliding vane, 105 air outlet, 2 liquid reservoir, 3 air guiding mechanism, 301 compressor housing branch, 302 cylindrical box branch, 303 three-way solenoid valve, 304 liquid reservoir branch, 4 drag reduction mechanism, 401 vane spring, 402 sliding cover, 403 cylindrical box, 404 sliding cover spring, 5 bracket. Specific implementation mode

[0032] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation modes.

[0033] Please refer to Figures 1 - 5 , the present invention provides a technical solution: a compressor cylinder with a solenoid valve, including a compressor housing 1, a liquid reservoir 2, an eccentric rotor 102, a crankshaft 103 and a sliding vane 104. The eccentric rotor 102 is embedded inside the compressor housing 1, the sliding vane 104 is slidably arranged on the lower side of the inner wall of the compressor housing 1, a drag reduction mechanism 4 is arranged on the lower side of the sliding vane 104, the crankshaft 103 is arranged inside the eccentric rotor 102, a liquid reservoir 2 is installed outside the compressor housing 1, and an air guiding mechanism 3 is arranged between the liquid reservoir 2 and the compressor housing 1, solving the problem that the spring resistance of the sliding vane 104 in the previous compressor cylinder cannot be offset.

[0034] Specific working principle: Refer to Figure 1 and 2 , when the compressor is running, the crankshaft 103 drives the eccentric rotor 102 to rotate clockwise under the centrifugal force. When the vane spring 401 moves from the maximum compression position to the minimum compression position, the three-way solenoid valve 303 is connected to the high-pressure side inside the compressor housing 1, so that the vane spring 401 is in force balance;

[0035] Refer to Figure 3 and 4, when the sliding vane spring 401 moves from the minimum compression position to the maximum compression position, the three-way solenoid valve 303 is connected to the low-pressure side inside the accumulator 2, so the inside of the cylindrical box 403 also remains at low pressure; however, at this time, the sliding vane spring 401 is in the external environment of the compressor housing 1, that is, the high-pressure side of the compressor housing 1. In this way, an obvious pressure difference is formed between the inside and outside of the cylindrical box 403, that is: the exhaust pressure difference δF between the exhaust pressure and the suction pressure of the compressor housing 1. The pressure formed by this pressure difference δF is opposite to the elastic force F of the sliding vane spring 401 and greater than the elastic force F of the sliding vane spring 401; during the compression and exhaust stage of the compressor housing 1, the elastic force F of the sliding vane spring 401 is a resistance. Now, since the direction of the formed pressure difference δF is opposite to the elastic force F of the sliding vane spring 401, it can offset the elastic force F of the sliding vane spring 401, that is, reduce the resistance during the exhaust compression stage of the compressor housing 1. The offset resistance is F' = F - δF < F. Therefore, the input power of the compressor housing 1 is reduced and the energy efficiency of the compressor is improved.

[0036] In the present invention, a cylindrical box 403 is installed at the tail of the sliding vane spring 401 inside the compressor housing 1 to form a sealed cavity. The cylindrical box 403 is connected to the three-way solenoid valve 303 through the cylindrical box branch 302. The other two sides of the three-way solenoid valve 303 are respectively connected to the low-pressure side of the accumulator 2 and the high-pressure side inside the compressor housing 1; the three-way solenoid valve 303 performs high and low pressure switching control. When the eccentric rotor 102 in the compressor rotates, when the sliding vane spring 401 moves from the maximum compression position to the minimum compression position, the three-way solenoid valve 303 is connected to the high-pressure side inside the compressor housing 1 to balance the spring force; when the sliding vane spring 401 moves from the minimum compression position to the maximum compression position, the three-way solenoid valve 303 is connected to the low-pressure side of the accumulator 2, and a pressure difference can be formed at the tail of the sliding vane spring 401, thereby forming a thrust opposite to the resistance of the sliding vane spring 401, offsetting part of the resistance of the sliding vane spring 401 that the compressor receives during the stage when the sliding vane spring 401 moves from the minimum compression position to the maximum compression position, thereby reducing the power and improving the energy efficiency of the compressor.

[0037] In addition, a method of using a compressor cylinder with a solenoid valve according to the present invention includes the following steps:

[0038] Step A: Installation of the cylindrical box 403:

[0039] Step A1: After the sliding cover 402 is inserted into the sliding cover spring 404, it is inserted into the cylinder from the top of the cylindrical box 403. The top of the sliding cover 402 is connected to the sliding vane 104 through the sliding vane spring 401;

[0040] Step A2: The bottom of the cylindrical box 403 is connected to the three-way solenoid valve 303 through the cylindrical box branch 302. The high-pressure side inside the compressor housing 1 is connected to the three-way solenoid valve 303 through the compressor housing branch 301. The low-pressure side inside the accumulator 2 is connected to the three-way solenoid valve 303 through the accumulator branch 304;

[0041] Step A3: Insert the cylindrical box 403 into the cylinder at the tail of the sliding vane spring 401;

[0042] Step B: Cancel the resistance when the sliding vane 104 is compressed:

[0043] Step B1: When the compressor is running, the crankshaft 103 drives the eccentric rotor 102 to rotate clockwise under the centrifugal force. When the sliding vane spring 401 moves from the maximum compression position to the minimum compression position, the three-way solenoid valve 303 is connected to the high-pressure side inside the compressor housing 1, so that the sliding vane spring 401 is in force balance;

[0044] Step B2: When the sliding vane spring 401 moves from the minimum compression position to the maximum compression position, the three-way solenoid valve 303 is connected to the low-pressure side inside the liquid receiver 2. Therefore, the inside of the cylindrical box 403 also remains at low pressure;

[0045] Step B3: According to Step B2, but at this time the sliding vane spring 401 is in the external environment of the compressor housing 1, that is, the high-pressure side of the compressor housing 1. In this way, an obvious pressure difference is formed between the inside and outside of the cylindrical box 403, that is: the pressure difference δF between the exhaust pressure and the suction pressure of the compressor housing 1. The pressure formed by this pressure difference δF is opposite to the elastic force F of the sliding vane spring 401 and greater than the elastic force F of the sliding vane spring 401; during the compression and exhaust stage of the compressor housing 1, the elastic force F of the sliding vane spring 401 is a resistance. Now the formed pressure difference δF is opposite to the elastic force F of the sliding vane spring 401 in direction, so it can cancel the elastic force F of the sliding vane spring 401, that is, reduce the resistance during the exhaust compression stage of the compressor housing 1. The cancelled resistance is F' = F - δF < F. Therefore, the input power of the compressor housing 1 is reduced and the energy efficiency of the compressor is improved.

[0046] The above shows and describes the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0047] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. The narrative way of this specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A cylinder drag reduction method for a compressor cylinder with an electromagnetic valve, in, The compressor cylinder comprises a compressor housing, a liquid reservoir, an eccentric rotor, a crankshaft and a vane, and is characterized in that: the eccentric rotor is embedded in the inner side of the compressor housing, the vane is slidably arranged on the lower side of the inner wall of the compressor housing, a drag reduction mechanism is arranged on the lower side of the vane, the crankshaft is arranged on the inner side of the eccentric rotor, a liquid reservoir is installed on the outside of the compressor housing, and an air guide mechanism is arranged between the liquid reservoir and the compressor housing; the drag reduction mechanism comprises a vane spring, a cylindrical box, a sliding cover and a sliding cover spring, the cylindrical box is sealed and fixed under the sliding cover, the sliding cover is slidably arranged on the top of the cylindrical box, the sliding cover spring is arranged on the lower side of the sliding cover, and the sliding cover spring is arranged between the sliding cover and the sliding cover; The air guide mechanism includes a three-way solenoid valve, and a compressor housing branch, a liquid reservoir branch, and a cylindrical box branch connected to three interfaces of the three-way solenoid valve; The following steps are involved: Step A: Installation of cylindrical box: Step A1, the sliding cover is connected to the sliding cover spring and then inserted into the cylinder from the top of the cylindrical box, and the top of the sliding cover is connected to the sliding plate through the sliding plate spring; Step A2, the bottom of the cylindrical box is connected to the three-way solenoid valve through the cylindrical box branch, the high-pressure side inside the compressor housing is connected to the three-way solenoid valve through the compressor housing branch, and the low-pressure side inside the liquid reservoir is connected to the three-way solenoid valve through the liquid reservoir branch; Step A3, insert the cylindrical box into the cylinder at the tail end of the slide spring; Step B: Offset the resistance of the slide during compression: Step B1, when the compressor is running, the crankshaft drives the eccentric rotor to rotate clockwise under the centrifugal force, and when the vane spring changes from the maximum compression position to the minimum compression position, the three-way solenoid valve is connected with the high-pressure side inside the compressor housing, so that the vane spring is balanced in force; Step B2, when the sliding plate spring moves from the minimum compression position to the maximum compression position, the three-way solenoid valve is connected to the low-pressure side of the reservoir, so the inside of the cylindrical box also maintains a low pressure; Step B3, according to step B2, but at this time the vane spring is in the external environment of the compressor housing, that is, the high-pressure side of the compressor housing, so that an obvious pressure difference is formed between the inner and outer sides of the cylindrical box, that is: the difference between the exhaust pressure and the suction pressure of the compressor housing δF, the pressure formed by the pressure difference δF is opposite to the vane spring force F and is greater than the vane spring force F; in the compression and exhaust stage of the compressor housing, the vane spring force F is a resistance, and the pressure difference δF formed now is opposite to the vane spring force F in direction, so it can offset the vane spring force F, that is, reduce the resistance of the compressor housing in the exhaust and compression stage, and the resistance after offset is F'=<F, so the input power of the compressor housing is reduced and the energy efficiency of the compressor is improved.

2. A cylinder drag reduction method for a compressor cylinder with a solenoid valve according to claim 1, Features: The other end of the compressor housing branch is connected to the high pressure side inside the compressor housing, the other end of the reservoir branch is connected to the low pressure side inside the reservoir, and the other end of the cylindrical box branch is connected to the inside of the cylindrical box.

3. The cylinder drag reduction method of a compressor cylinder with a solenoid valve according to claim 1, Features: A sealing rubber ring is arranged on the edge of the sliding cover.

4. A method for reducing resistance of a compressor cylinder with a solenoid valve according to claim 1, characterized in that: the inner diameter of the eccentric rotor is greater than the diameter of the crankshaft.

5. A method for reducing resistance of a compressor cylinder with a solenoid valve according to claim 1, characterized in that: the compressor housing is respectively provided with an air inlet and an air outlet on both sides of the sliding vane, and a triangular mounting bracket is arranged outside the compressor housing.

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