JP3755917B2 - Compressor valve device - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a valve device for a relatively small reciprocating compressor used in a household refrigerator or the like.
[0002]
[Prior art]
In recent years, various improvements have been made in the valve device of a compressor for the purpose of improving the efficiency of the compressor. However, there is a high demand for higher efficiency and lower noise from the market.
[0003]
An example of a conventional valve device for a compressor is disclosed in Japanese Patent Application Laid-Open No. 3-175174.
[0004]
Hereinafter, an embodiment of a conventional valve device for a compressor disclosed in Japanese Patent Laid-Open No. 3-175174 described above will be described with reference to FIGS.
[0005]
6 is an assembled sectional view of the valve device according to an embodiment of the conventional valve device, FIG. 7 is an assembled sectional side view of the valve device of FIG. 6, and FIG. 8 is an exploded perspective view of FIG. 6 to 8, 1 is a valve device, and 4 is a valve plate having two suction holes 2 and two discharge holes 3. A discharge reed valve 22 that opens and closes the discharge hole 3 is installed in a recess 21 provided in the valve plate 4. Reference numeral 23 denotes a stopper that regulates the lift amount of the reed valve 22 and is fixed by a rivet 24. A suction reed valve 11, a plate gasket 12, the valve plate 4, a head gasket 13, and a cylinder head 14 are fixed to the cylinder 10 by bolts (not shown).
[0006]
A piston that reciprocates when driven by a motor (not shown) is loosely fitted in the cylinder 10. Further, the cylinder head has a suction chamber 25 and a discharge chamber 26.
[0007]
The operation of the conventional compressor valve device constructed as described above will be described below.
[0008]
First, the reciprocating motion of the piston 15 causes the refrigerant gas to be sucked into the cylinder 10 from the suction chamber 25 of the cylinder head 14 through the suction hole 2 of the valve plate 4 by opening and closing the suction reed valve 11. The refrigerant gas compressed in the cylinder 10 passes through the two discharge holes 3 and is discharged into the discharge chamber 26 of the cylinder head 14 by opening and closing the discharge reed valve.
[0009]
[Problems to be solved by the invention]
However, in the above-described conventional configuration, since the refrigerant gas flows out from the two discharge holes 3 into the discharge chamber 26 at the same time, the flow of the refrigerant gas interferes with each other to inhibit the smooth flow of the refrigerant. Is deteriorated and the capacity is lowered, and the refrigerant gas emitted from the two discharge holes 3 is intermittently discharged and stopped at the same time into the discharge chamber 26, thereby generating extremely large refrigerant gas pulsation and noise. There were drawbacks.
[0010]
SUMMARY OF THE INVENTION An object of the present invention is to solve the conventional problems, and to provide a valve device for a compressor that has good discharge efficiency and little reduction in capacity. Another object of the present invention is to provide a valve device for a compressor in which the pulsation of the refrigerant gas is small and noise generation is small.
[0011]
[Means for Solving the Problems]
In order to achieve this object, a valve device for a compressor according to the present invention includes a cylinder incorporating a piston, a suction muffler, a reed valve that opens and closes a suction hole, two discharge holes, two discharge valves, and 2 A valve plate having a plurality of pass holes, a cylinder head including a suction chamber and two discharge chambers, a discharge gasket for sealing the valve plate and the cylinder head, and a discharge muffler. The first discharge valve and the first pass hole are disposed in the first discharge chamber of the cylinder head, and the second discharge hole, the second discharge valve, and the second pass hole are in the second discharge chamber. The first discharge chamber and the second discharge chamber form a completely independent space by a discharge gasket, and both the first discharge hole and the second discharge hole are the one discharge chamber . Communicating with the cylinder, and the first pass hole Second pass holes are configured to both communicating with the discharge muffler.
[0012]
Further, a valve plate having two discharge holes, two discharge valves and a pass hole, a suction chamber, two discharge chambers, a cylinder head composed of a mixing chamber, and the valve plate and cylinder head are sealed. The first discharge hole and the first discharge valve having a discharge gasket and a discharge muffler are disposed in the first discharge chamber of the cylinder head, and the second discharge hole and the second discharge valve are: The first discharge chamber is disposed in the second discharge chamber, the first discharge chamber has a first communication hole communicating with the mixing chamber, and the second discharge chamber has a second communication hole communicating with the mixing chamber. The mixing chamber forms a completely independent space by the discharge gasket, and the pass hole of the mixing chamber is configured to communicate with the discharge muffler.
[0013]
[Action]
According to a first aspect of the present invention, there are provided the valve device for the compressor, wherein the two discharge holes and the two discharge valves are disposed in the first and second discharge chambers, respectively, and the first discharge Both the hole and the second discharge hole communicate with the cylinder, and the first and second discharge chambers communicate with the discharge muffler via the pass holes, so that the refrigerant gas can be single from the two discharge holes at the same time. The refrigerant gas flow interference caused by flowing into the discharge chamber is eliminated, and the reduction in discharge efficiency caused by the refrigerant flow interference is eliminated. In addition, since the first and second discharge chambers have different volumes, the frequency of pulsation in the discharge chamber is different, and the noise does not resonate with each other in the discharge muffler.
[0014]
Further, since the diameters of the first and second pass holes communicating with the discharge muffler from the first and second discharge chambers are different, the pulsation frequency in the discharge muffler is shifted due to the difference in the passage flow velocity and resonates with each other. Noise is no longer amplified.
[0015]
【Example】
Hereinafter, a first embodiment of a valve device for a compressor according to the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view of a valve device for a compressor according to a first embodiment of the present invention, and FIG. 2 is a cross-sectional view of an essential part of the valve device as viewed in the direction of arrow A in FIG.
[0016]
In FIGS. 1 and 2, reference numeral 101 denotes a biston, which compresses the refrigerant gas in the space in the cylinder 102 by reciprocating in the cylinder 102. Reference numeral 103 denotes a suction muffler having a muffler suction hole 104 for sucking refrigerant gas.
[0017]
105 is a suction gasket, 106 is a suction lead, and has a reed valve 107. Reference numeral 108 denotes a valve plate, and two suction ports 110 are opposed to the reed valve 106. The valve plate 108 also includes a first discharge hole 111, a first discharge valve 112 for opening and closing the first discharge hole 111, a first pass hole 112a, a second discharge hole 113, A second discharge valve 114 for opening and closing the second discharge hole 113 and a second pass hole 114a. The first and second discharge valves are fixed to the valve plate 108 by a stopper 115. Yes.
[0018]
Reference numeral 116 denotes a discharge gasket, which is located between the valve plate 108 and the cylinder head 117. By the seal of the discharge gasket 116, the cylinder head 117 has a suction chamber 118, a first discharge chamber 119, and a second discharge chamber 120. The first discharge chamber 119 is formed with a first discharge hole 111, a first discharge valve 112, and a first pass hole 112a, and the second discharge chamber 120 has a second discharge hole 112a. A discharge hole 113, a second discharge valve 114, and a second pass hole 114 a are disposed, and the first pass hole 112 a and the second pass hole 114 a are all in communication with the discharge muffler 121.
[0019]
The operation of the compressor valve device configured as described above will be described below.
[0020]
First, the reciprocating motion of the piston 101 causes the refrigerant gas to be drawn into the suction chamber 118 from the muffler suction port 104 through the suction muffler 103, and sucked into the cylinder 102 from the suction hole 110 by opening and closing the reed valve 117.
[0021]
The refrigerant gas compressed in the cylinder 102 is divided into a first discharge hole 111 and a second discharge hole 112 by opening and closing the first reed valve and the second reed valve, respectively. 119, and discharged into the second discharge chamber 120. Since the first discharge chamber 119 and the second discharge chamber 120 are completely independent spaces, the flow of the refrigerant gas generated by the discharge flows around the first discharge valve 112 and the second discharge valve 114. The refrigerant flows smoothly around the discharge valve without interfering with each other, and the deterioration of the discharge efficiency caused by the flow around one discharge valve interfering with the flow around the other discharge valve can be prevented.
[0022]
As described above, the valve device of the compressor of this embodiment includes the cylinder 102 incorporating the piston 101, the suction muffler 103, the reed valve 107 that opens and closes the suction hole 110, and the two discharge holes 111 and 113. The valve plate 108 having the discharge valves 112 and 114 and the two pass holes 112a and 114a, the cylinder head 117 including the suction chamber 118 and the two discharge chambers 119 and 120, the valve plate 108 and the cylinder head 117 A discharge gasket 116 to be sealed and a discharge muffler are provided, and the first discharge hole 111, the first discharge valve 112, and the first pass hole 112 a are disposed in the first discharge chamber 119 of the cylinder head 117. The second discharge hole 113, the second discharge valve 114, and the second pass hole 114 a are disposed in the second discharge chamber 120, and the first discharge chamber 19 and the second discharge chamber 120 form a completely independent space by the discharge gasket 116, and the first pass hole 112a and the second pass hole 114a are both in communication with the discharge muffler 121. Interference in the flow of the refrigerant gas caused by the refrigerant gas flowing into the single discharge chamber simultaneously from the two discharge holes is eliminated, and a decrease in discharge efficiency caused by the interference in the refrigerant flow can be eliminated.
[0023]
Next, a second embodiment of the compression valve device according to the present invention will be described with reference to the drawings. In addition, about the same structure as a 1st Example, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.
[0024]
FIG. 3 is a cross-sectional view of an essential part of a valve device for a compressor according to a second embodiment of the present invention.
[0025]
In FIG. 3, 122 is a first discharge chamber and 123 is a second discharge chamber, each having a different volume.
[0026]
The operation of the compressor valve device configured as described above will be described below.
[0027]
The refrigerant gas flows from the first discharge hole 111 and the second discharge hole 113 to the first discharge chamber 122 and the second discharge chamber, respectively, by opening and closing the first discharge valve 112 and the second discharge valve 114. 123 is discharged. By the way, the refrigerant gas causes a pressure pulsation in the discharge chamber due to intermittent discharge, and if this pulsation is large, the pulsation becomes an excitation source and causes an increase in vibration and noise. Since the two discharge chambers 123 have different volumes, the discharge chambers 123 have different pulsation frequencies, and the discharge muffler 121 passes through the first pass hole 112a and the second pass hole 114a, respectively, at different pulsation frequencies. The refrigerant gas flows through the exhaust muffler, and the amplification of noise caused by resonance caused by the refrigerant gas having the same pulsation frequency flowing in the discharge muffler is eliminated. Furthermore, by appropriately setting the volumes of the first discharge chamber 122 and the second discharge chamber 123, pulsation in the discharge muffler can be significantly suppressed.
[0028]
As described above, the compressor valve device according to the second embodiment of the present invention includes the first discharge chamber 122 and the second discharge chamber 123 of the cylinder head, each having a different capacity. The frequency of the pulsation is different, and the noise is not amplified by resonating with each other in the discharge muffler.
[0029]
Next, a third embodiment of the compression valve device according to the present invention will be described with reference to the drawings. In addition, about the same structure as a 1st Example, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.
[0030]
FIG. 4 is a cross-sectional view of an essential part of a valve device for a compressor according to a third embodiment of the present invention.
[0031]
In FIG. 4, 112b is a first pass hole, and 114b is a second pass hole, each having a different diameter.
[0032]
The operation of the compressor valve device configured as described above will be described below.
[0033]
The refrigerant gas flows from the first discharge hole 111 and the second discharge hole 113 to the first discharge chamber 119 and the second discharge chamber by opening and closing the first discharge valve 112 and the second discharge valve 113, respectively. 120 is discharged. After that, the first discharge chamber 119 and the second discharge chamber respectively enter the discharge muffler 121 through the second pass hole 114b having different diameters from the first pass hole 112b and the first pass hole. Discharged.
[0034]
The operation of the compressor valve device configured as described above will be described below.
[0035]
The refrigerant gas passes through the first discharge and communication holes 111 and the second discharge holes 113 by opening and closing the first discharge valve 112 and the second discharge valve 113, respectively, It is discharged into the discharge chamber 120. By the way, the refrigerant gas causes a pressure pulsation in the discharge chamber due to intermittent discharge, and if this pulsation is large, the pulsation becomes an excitation source and causes an increase in vibration and noise, but the discharge muffler from the first discharge chamber 119 Since the first discharge path hole 112b communicating with the second discharge path hole 121 communicating with the discharge muffler 121 from the second discharge chamber 120 has different diameters, the respective applied flow velocities are different. Therefore, the frequency of pulsation when flowing into the discharge muffler 121 is different. Therefore, the amplification of noise caused by resonance caused by the flow of the refrigerant gas having the same pulsation frequency in the discharge muffler is eliminated.
[0036]
As described above, the valve device of the compressor according to the third embodiment of the present invention includes the first pass hole 112b and the second pass hole 114b having different diameters. Since the pulsation frequencies of the refrigerant gas passing through 112b and the second pass hole 114b are different from each other, they do not resonate with each other in the discharge muffler to amplify noise.
[0037]
FIG. 5 is a cross-sectional view of an essential part of a valve device for a compressor according to a fourth embodiment of the present invention.
[0038]
In FIG. 5, 119 b is a first discharge chamber, 120 b is a second discharge chamber, and 125 is a mixing chamber. The first communication hole 125 communicates with the first discharge chamber 119 b, and the second communication hole 126 allows The two discharge chambers 120b communicate with each other. The mixing chamber 127 communicates with the discharge muffler 121 through a pass hole 128.
[0039]
The operation of the compressor valve device configured as described above will be described below.
[0040]
The refrigerant gas is discharged from the first discharge hole 111 and the second discharge hole 113 to the first discharge chamber 119b and the second discharge chamber 120b by opening and closing the first discharge valve 112 and the second discharge valve 114, respectively. Is done. Since the first discharge chamber 119b and the second discharge chamber 120b are independent spaces, the discharged refrigerant does not interfere with each other to deteriorate the discharge efficiency. Next, the discharged refrigerant gas is contracted through the first communication hole 125 and the second communication hole, and flows into the mixing chamber 127. Since the discharge is intermittently performed, pulsation of the refrigerant gas is generated, but the pulsation is reduced by the first communication hole 125 and the second communication hole 126, and the mixing chamber 127 passes through the pass hole 128. Therefore, it acts as a space that alleviates the intermittent flow of the refrigerant gas flowing through the discharge muffler 121, so that the pulsation inside the discharge muffler 121 is suppressed, the flow of the refrigerant gas is smooth, and noise generation is greatly suppressed.
[0041]
As described above, in the valve device of the compressor according to the fourth embodiment of the present embodiment, the first discharge hole 111 and the first discharge valve 112 are arranged in the first discharge chamber 119b of the cylinder head 117. The second discharge hole 113 and the second discharge valve 114 are provided in the second discharge chamber 120b, and the first discharge hole 119b communicates with the mixing chamber 127. 125, the second discharge chamber 120b has a second communication hole 126 communicating with the mixing chamber 127. The mixing chamber 127 forms a completely independent space by the discharge gasket 116, and the mixing chamber 127. The pass hole 128 communicates with the discharge muffler 121, so that there is no low discharge efficiency due to the mutual interference of the refrigerant gas flowing intermittently from the two discharge holes 111, 113, and the mixing chamber 127 has the discharge muffler 121. Flow That order to the pulsating cushioning and rectification of the refrigerant, pulsation of the refrigerant gas is smoothly reduced flow, it can greatly reduce the generation of noise.
[0042]
【The invention's effect】
As described above, the compressor valve device according to claim 1 of the present invention includes a cylinder incorporating a piston, a suction muffler, a reed valve for opening and closing the suction hole, two discharge holes, and two discharge valves. A valve plate having two pass holes, a cylinder head having a suction chamber and two discharge chambers, a discharge gasket for sealing the valve plate and the cylinder head, a discharge muffler, and a first discharge hole; The first discharge valve and the first pass hole are disposed in the first discharge chamber of the cylinder head, and the second discharge hole, the second discharge valve, and the second pass hole are in the second discharge chamber. The first discharge chamber and the second discharge chamber form a completely independent space by the discharge gasket , and both the first discharge hole and the second discharge hole communicate with the cylinder, Both the first pass hole and the second pass hole Since it is configured to communicate with the outlet muffler, there is no interference in the flow of the refrigerant gas caused by the refrigerant gas flowing into the single discharge chamber from the two discharge holes at the same time, and the discharge efficiency is reduced due to the interference in the refrigerant flow Can be resolved.
[0043]
In addition, since the first discharge chamber and the second discharge chamber of the cylinder head each having different capacities are provided, the pulsation frequency in the discharge chamber is different, and the noise is resonated with each other in the discharge muffler. You will never meet.
[0044]
Further, since the first pass hole and the second pass hole each having different diameters are provided, the pulsation frequency of the refrigerant gas passing through the first pass hole and the second pass hole is different. It will not resonate with each other to amplify noise.
[0045]
The first discharge hole and the first discharge valve are disposed in the first discharge chamber of the cylinder head, and the second discharge hole and the second discharge valve are disposed in the second discharge chamber. The first discharge chamber has a first communication hole that communicates with the mixing chamber, the second discharge chamber has a second communication hole that communicates with the mixing chamber, and the mixing chamber is formed by a discharge gasket. While forming a completely independent space, the pass hole of the mixing chamber is configured to communicate with the discharge muffler, so there is no low discharge efficiency due to the mutual interference of refrigerant gas intermittently flowing from the two discharge holes, Since the mixing chamber rectifies and rectifies the pulsation of the refrigerant flowing to the discharge muffler, the pulsation of the refrigerant gas is small, the flow is smooth, and the generation of noise can be greatly reduced.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a valve device of a compressor according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view of a main part of the valve device of the compressor according to the first embodiment of the present invention. FIG. 4 is a cross-sectional view of main parts of a valve device of a compressor according to a second embodiment of the invention. FIG. 4 is a cross-sectional view of main parts of a valve device of a compressor according to the third embodiment of the invention. FIG. 6 is a cross-sectional view of the main part of the valve device of the compressor according to the embodiment of the present invention. FIG. 6 is a cross-sectional view of the assembly according to an example of the valve device of the conventional compressor. Perspective view [Explanation of symbols]
101 Piston 102 Cylinder 104 Suction muffler 107 Reed valve 108 Valve plate 110 Suction hole 111 First discharge hole 112 First discharge valve 112a First pass hole 113 Second discharge hole 114 Second discharge valve 114a Second Pass hole 116 Discharge gasket 117 Cylinder head 118 Suction chamber 119 First discharge chamber 120 Second discharge chamber 121 Discharge muffler 125 First communication hole 126 Second communication hole 128 Pass hole

Claims (4)

One cylinder with a built-in piston, a suction muffler, a reed valve that opens and closes the suction hole, a valve plate with two discharge holes, two discharge valves, and two pass holes, a suction chamber, and two A cylinder head including a discharge chamber; a discharge gasket for sealing the valve plate and the cylinder head; and a discharge muffler, wherein the first discharge hole, the first discharge valve, and the first pass hole are formed in the cylinder The second discharge hole, the second discharge valve, and the second pass hole are disposed in the second discharge chamber, and are disposed in the first discharge chamber of the head. And the second discharge chamber form a completely independent space by the discharge gasket, and both the first discharge hole and the second discharge hole communicate with the one cylinder, and Pass hole and the second pass hole Both valve device of a compressor having the structure that communicates with the discharge muffler.   2. The valve device for a compressor according to claim 1, further comprising a first discharge chamber and a second discharge chamber of a cylinder head each having a different capacity.   The compressor valve device according to claim 1, further comprising a first pass hole and a second pass hole having different diameters.   A cylinder with a piston, a suction muffler, a reed valve that opens and closes the suction hole, a valve plate with two discharge holes, two discharge valves, and a pass hole, a suction chamber, and two discharge chambers A cylinder head comprising a chamber, a discharge gasket that seals the valve plate and the cylinder head, and a discharge muffler, wherein the first discharge hole and the first discharge valve are the first head of the cylinder head. The second discharge hole and the second discharge valve are disposed in the discharge chamber, the first discharge chamber is disposed in the second discharge chamber, and the first discharge chamber communicates with the mixing chamber. There is a communication hole, the second discharge chamber has a second communication hole communicating with the mixing chamber, the mixing chamber forms a completely independent space by the discharge gasket, and the mixing chamber The pass hole of the discharge Valve device of a compressor having the structure communicating with Fuller.

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