TH38352B - Inlet silencer system for refrigeration compressor motor unit - Google Patents

Abstract

DC60 (23/06/40) This invention relates to a sound suppression system. For the refrigeration compressor motor unit, this system consists of an inlet silencer (3, 4) that is molded with a housing (4) separated by a wall (40) into two chambers, paired with a tube. Pair (42) and cover (3) that locate the inlet tube (30) to carry the refrigerant gas into the first chamber, and the conduit (31) to connect the second chamber to the suction portion of the cylinder head (5). ) The volume ratio between the two chambers will be 1 by this volume ratio. It is determined to obtain a lower acoustic energy in the 500 Hz frequency range. Additionally, rooms connected in parallel on the suction pass are used as a resonator. To improve the attenuation in the sound spectrum, the invention can be applied to the reduced power, among other alternate compressor motor units. The single cylinder is hermetically sealed. Fig. 3 This invention relates to a silencing system. For the refrigeration compressor motor unit, this system consists of an inlet silencer (3, 4) molded by a housing (4) separated by a wall (40) into two chambers, paired with a tube. Pair (42) and cover (3) that locate the inlet tube (30) to carry the refrigerant gas into the first chamber, and the conduit (31) to connect the second chamber to the suction portion of the cylinder head (5). ) The volume ratio between the two chambers will be 1 by this volume ratio. In addition, a room connected in parallel on the suction pass is used as a generator. To improve the attenuation in the sound spectrum, the invention can be applied to the reduced power, among other alternate compressor motor units. The single cylinder is hermetically sealed. Figure 3.

Claims (7)

Disclaimer (all) which will not appear on the advertisement page: 1. Inlet silencing for motor-compressor units of type containing capsules that are Hermetic seal (CH) The compressor consists of a body (1), an internal body (1), a piston-filled cylinder (13), and a return chamber (12). Motor for piston rotation And the cylinder head (15) that covers the said cylinder at the front through the valve assembly (2). Includes at least one (3, 4) inlet silencers that carry refrigerant gas for internal compression. Capsule towards the cylinder head And consisted of two chambers (43, 44) separated by walls (40) inlet tubes (30) that carried gas from inside the capsule towards that one chamber (43) double tubes (42) that went. Such wall (40) provides for a gas channel from the first chamber to the second chamber and the conduit (31) connecting the second chamber (44) to the aforementioned cylinder head (5). Such a sound is characterized by that The volume ratio between the two chambers (43, 44) is 1 and is determined for a lower sound energy in the area of 500 Hz and at the total volume of both rooms 7 to 11 times the volume. Capacity of the compressor 2. Sound suppression system according to claim 1, with characteristics that The ratio of the aforementioned first chamber volume (43) to the said second chamber volume (44) was approximately 0.9 3. The sound suppression system, according to one of the previous claims, was characterized by the imported tubes (30). There is a Sch cross-section and the Lch length up to the Lch / Sch ratio. The numerical value from 2 to 3 is significant. The double tubes (42) have a cross-section Sc and length Lc up to the Lc / Sc ratio, have significant numerical values from 2 to 3, and at the length of the L43 and L44 of the twin tubes into chamber one. (43) respectively, and the second chamber (44) up to the ratio between the volume of the chamber and the length of the penetration into this chamber, V43 / L43 and V44 / L44 were significantly numerical values from 0.5 to 0.9, respectively. Sound suppression system according to claim 4, which has characteristics that The ratio between the Sch cross-section of the imported tube (30) and the double-tube Sc-section (42) to be selected is 0.6 6. The sound suppression system according to claim 5 is characterized by the guide tubes (31). It has a cross section of approximately 2 to 2.5 times larger than that of a pair of tubes (42). The silencer was Made of thermoplastic material 8. Sound suppression system according to claim 7, which has characteristics that The material is polybutylene terephthalase. 9. Sound suppression system, according to one of the preceding claims, has specific characteristics that It also consists of an additional chamber (10) used as a resonator connected in parallel with the suction of the refrigerant gas 1 0. Silencing system according to claim 9, which is characterized by the Connected ancillary room (10) Into the suction part of the cylinder head (5) by the pipe (14) 1 1. The sound suppression system according to Claim 10, which has characteristics that The ancillary chamber (10) is a suction chamber that Is positioned in the aforementioned body (1) and where the extension pipe (14) is directed through a set of valves (2) towards the cylinder head (5) 1. 2. The sound suppression system according to Claims 9 to 11, any one specific to Room volume Such add-ons (10) will be 1.1 to 1.3 times the volume of compressor capacity 1. 3. The sound suppression system according to claim 12, which is characterized by the aforementioned pipe (14), has the Lcd length and the Scd cross-section up to the Lcd / Scd ratio, having a term numerical value from 0.6 to 0.8 significantly 1. 4. The sound suppression system according to one of the previous claims, which is characterized by Such a pair of tubes (42) had an entrance with a converging shape in the aforementioned chamber (43) to reduce the loss of load 1. 5. The sound suppression system according to one of the previous claims, which is characterized by The inlet pipe (30) has an outward flared opening (32) and is positioned near the gas inlet (70) in the sealed capsule. Hermetic type 1 6. The sound suppression system according to one of the preceding claims, which is characterized by The silencer consists of a trunk (4) that is divided into two chambers (43, 44) with a removable wall (40) and a cover (3) that supports the inlet pipe (30) and a pipe. Lead (31) 1 7. The sound suppression system according to claim 16, which has characteristics that The removable wall (40) with the twin tube (42) may be imported and held in place in the trunk (4) by means of the sliding groove (41).