CN103954067A - Refrigerating device - Google Patents

Refrigerating device Download PDF

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Publication number
CN103954067A
CN103954067A CN201410152529.5A CN201410152529A CN103954067A CN 103954067 A CN103954067 A CN 103954067A CN 201410152529 A CN201410152529 A CN 201410152529A CN 103954067 A CN103954067 A CN 103954067A
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China
Prior art keywords
air
compression unit
making
chamber
refrigerating plant
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CN201410152529.5A
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Chinese (zh)
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CN103954067B (en
Inventor
梁祥飞
黄辉
郑波
黄柏良
方金升
庄嵘
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Abstract

The invention discloses a refrigerating device, which comprises an outdoor heat exchanger, a compressor unit, an indoor heat exchanger and an air supplement device which are communicated in sequence, wherein the air supplement device comprises a first air supplement device and a second air supplement device which are sequentially communicated and are arranged on a pipeline between the indoor heat exchanger and the outdoor heat exchanger, a first throttling device is arranged between the indoor heat exchanger and the first air supplement device, a second throttling device is arranged between the first air supplement device and the second air supplement device, the compressor unit comprises a main compression unit and an auxiliary compression unit, both gas separated from the first air supplement device and gas separated from the second air supplement device flow to the main compression unit, and the auxiliary compression unit is arranged on an air supplement pipeline between the first air supplement device and/or the second air supplement device and the main compression unit. Through adopting multi-stage throttling and multi-stage air supplement, the specific enthalphy of an inlet of the indoor heat exchanger is lowered, the air supplement quantity of the compressor unit is improved, and the capability and the energy efficiency are improved.

Description

Refrigerating plant
Technical field
The present invention relates to refrigeration is field, especially, relates to a kind of refrigerating plant.
Background technology
Air source heat pump heating capacity declines decay rapidly with outdoor environment temperature and cannot meet consumers' demand.The middle tonifying Qi of existing employing twin-stage or accurate two-stage compression increases enthalpy technology, comprises the middle not exclusively cooling and middle not exclusively cool cycles of one-level throttling of two-stage throttling, can improve low-temperature heating capacity and COP, reduction compressor exhaust temperature is had to certain help simultaneously.But the lifting amplitude of the lifting of prior art to ability or efficiency is limited, also limited to the reduction amplitude of hiigh pressure stage delivery temperature.
Summary of the invention
The object of the invention is to provide a kind of refrigerating plant, increases the low technical problem of enthalpy technical efficiency with tonifying Qi in the middle of solving existing employing twin-stage or accurate two-stage compression.
For achieving the above object, the invention provides a kind of refrigerating plant, comprise the outdoor heat exchanger, compressor unit, indoor heat exchanger and the making-up air device that are connected successively, making-up air device comprises the first making-up air device and the second making-up air device, on the pipeline between indoor heat exchanger and outdoor heat exchanger, be provided with the first making-up air device and the second making-up air device that are connected successively; Wherein, between indoor heat exchanger and the first making-up air device, be provided with first throttle device, between the first making-up air device and the second making-up air device, be provided with the second throttling arrangement; Compressor unit comprises main road compression unit and auxiliary compression unit, and the gas flow equalization separating with the second making-up air device through the first making-up air device is to main road compression unit; On the tonifying Qi pipeline between the first making-up air device and/or the second making-up air device and main road compression unit, be provided with auxiliary compression unit.
Further, main road compression unit comprises low pressure compression chamber and high pressure compressed chamber, low pressure compression chamber and high pressure compressed chamber are connected in series, gas supplementing opening in the middle of being provided with between low pressure compression chamber and high pressure compressed chamber, the gas outlet of the second making-up air device is connected with middle gas supplementing opening, the gas outlet of the first making-up air device is connected with the exhaust outlet in high pressure compressed chamber, between the gas outlet of the first making-up air device and the exhaust outlet in high pressure compressed chamber, is provided with auxiliary compression unit.
Further, main road compression unit comprises low pressure compression chamber and high pressure compressed chamber, low pressure compression chamber and high pressure compressed chamber are connected in series, gas supplementing opening in the middle of being provided with between low pressure compression chamber and high pressure compressed chamber, the gas outlet of the first making-up air device is connected with on middle gas supplementing opening, the gas outlet of the second making-up air device is connected with the exhaust outlet in high pressure compressed chamber, between the gas outlet of the second making-up air device and the exhaust outlet in high pressure compressed chamber, is provided with auxiliary compression unit.
Further, main road compression unit comprises low pressure compression chamber and high pressure compressed chamber, low pressure compression chamber and high pressure compressed chamber are connected in series, gas supplementing opening in the middle of being provided with between low pressure compression chamber and high pressure compressed chamber, the gas outlet of the first making-up air device is connected with middle gas supplementing opening, the gas outlet of the second making-up air device is connected on the air inlet of auxiliary compression unit, and the exhaust outlet of auxiliary compression unit is connected on the tonifying Qi pipeline between gas outlet and the middle gas supplementing opening of the first making-up air device.
Further, compressor unit also comprises increase-volume compression chamber, and increase-volume compression chamber is in parallel with low pressure compression chamber.
Further, auxiliary compression unit comprises the first auxiliary compression unit and the second auxiliary compression unit, the gas outlet of the second making-up air device connects on the air inlet of the second auxiliary compression unit, the gas outlet of the first making-up air device is connected on the air inlet of the first auxiliary compression unit, and the exhaust outlet of the exhaust outlet of the first auxiliary compression unit and the second auxiliary compression unit is all connected on the exhaust outlet of main road compression unit.
Further, auxiliary compression unit comprises the first auxiliary compression unit and the second auxiliary compression unit, the gas outlet of the second making-up air device connects on the air inlet of the second auxiliary compression unit, the gas outlet of the first making-up air device is connected on the air inlet of the first auxiliary compression unit, the exhaust outlet of the second auxiliary compression unit is connected on the air inlet of the first auxiliary compression unit, and the exhaust outlet of the first auxiliary compression unit is connected on the exhaust outlet of main road compression unit.
Further, main road compression unit comprises low pressure compression chamber and high pressure compressed chamber, and low pressure compression chamber and high pressure compressed chamber are connected in series; Or main road compression unit comprises 2 compression chambers, 2 compression chambers are connected in parallel.
Further, on the pipeline between indoor heat exchanger and outdoor heat exchanger, be also provided with the 3rd making-up air device, the 3rd making-up air device is connected between outdoor heat exchanger and the second making-up air device, between the second making-up air device and the 3rd making-up air device, be also provided with the 3rd throttling arrangement, the gas flow main road compression unit separating through the 3rd making-up air device; On the tonifying Qi pipeline between the first making-up air device and main road compression unit, be provided with an auxiliary compression unit; On the tonifying Qi pipeline between the second making-up air device and/or the 3rd making-up air device and main road compression unit, be provided with an auxiliary compression unit.
Further, main road compression unit comprises low pressure compression chamber and high pressure compressed chamber, low pressure compression chamber and high pressure compressed chamber are connected in series, between low pressure compression chamber and high pressure compressed chamber, be provided with in the middle of gas supplementing opening, the gas outlet of the second making-up air device be connected at middle gas supplementing opening; Auxiliary compression unit comprises the first auxiliary compression unit and the second auxiliary compression unit; The gas outlet of the first making-up air device is connected on the air inlet of the first auxiliary compression unit, and the exhaust outlet of the first auxiliary compression unit is connected on the exhaust outlet in high pressure compressed chamber; The gas outlet of the 3rd making-up air device is connected on the air inlet of the second auxiliary compression unit, and the exhaust outlet of the second auxiliary compression chamber is connected on the tonifying Qi pipeline between gas outlet and the middle gas supplementing opening of the second making-up air device.
Further, auxiliary compression unit comprises the first auxiliary compression unit, the second auxiliary compression unit and the 3rd auxiliary compression unit; The gas outlet of the first making-up air device is connected on the air inlet of the first auxiliary compression unit, the gas outlet of the second making-up air device is connected on the air inlet of the second auxiliary compression unit, and the gas outlet of the 3rd making-up air device is connected on the air inlet of the 3rd auxiliary compression unit; The exhaust outlet of the first auxiliary compression unit, the second auxiliary compression unit and the 3rd auxiliary compression unit is all connected on the exhaust outlet of main road compression unit.
Further, the capacity of low pressure compression chamber is Va, and the capacity in high pressure compressed chamber is Vb; Refrigerating plant system adopts cold-producing medium to be R410A, R290, R32, the mixture that contains R32 and R1234ze or to contain R32 and the mixture of R1234yf; Wherein, the ratio range of Vb and Va is 0.5 to 1.0.
Further, the ratio range of Vb and Va is 0.75 to 0.9.
Further, the capacity of low pressure compression chamber is Va, and the capacity of auxiliary compression unit is Vc; Refrigerating plant system adopts cold-producing medium to be R410A, R290, R32, the mixture that contains R32 and R1234ze or to contain R32 and the mixture of R1234yf; Wherein, in the time that refrigerating plant is used for heat pump type air conditioner, the ratio range of Vc and Va is 0.05 to 0.25; Or in the time that refrigerating plant is used for air source hot pump water heater, the ratio range of Vc and Va is 0.05 to 0.45.
Further, in the time that refrigerating plant is used for heat pump type air conditioner, the ratio range of Vc and Va is 0.07 to 0.15; Or in the time that refrigerating plant is used for air source hot pump water heater, the ratio range of Vc and Va is 0.1 to 0.3.
Further, the capacity of low pressure compression chamber is Va, and the capacity of auxiliary compression unit is Vc; Refrigerating plant system adopts cold-producing medium to be R410A, R290, R32, the mixture that contains R32 and R1234ze or to contain R32 and the mixture of R1234yf; Wherein, in the time that refrigerating plant is used for heat pump type air conditioner, the ratio range of Vc and Va is 0.07 to 0.45; Or in the time that refrigerating plant is used for air source hot pump water heater, the ratio range of Vc and Va is 0.08 to 0.65.
Further, in the time that refrigerating plant is used for heat pump type air conditioner, the ratio range of Vc and Va is 0.08 to 0.3; Or in the time that refrigerating plant is used for air source hot pump water heater, the ratio range of Vc and Va is 0.12 to 0.5.
Further, the capacity of main road compression unit is Va, and the capacity of the first auxiliary compression unit is Vc, and the second auxiliary compression unit is Vb; Refrigerating plant system adopts cold-producing medium to be R410A, R290, R32, the mixture that contains R32 and R1234ze or to contain R32 and the mixture of R1234yf; Wherein, when refrigerating plant is when the heat pump type air conditioner, the ratio range of Vb and Va be 0.07 to 0.45, Vc and the ratio range of Va be 0.05 to 0.25; Or, when refrigerating plant is when the air source hot pump water heater, the ratio range of Vb and Va be 0.08 to 0.65, Vc and the ratio range of Va be 0.05 to 0.45.
Further, when refrigerating plant is when the heat pump type air conditioner, the ratio range of Vb and Va be 0.08 to 0.3, Vc and the ratio range of Va be 0.07 to 0.15; Or, when refrigerating plant is when the air source hot pump water heater, the ratio range of Vb and Va be 0.12 to 0.5, Vc and the ratio range of Va be 0.1 to 0.3.
Further, making-up air device is flash evaporation or Intermediate Heat Exchanger.
Further, between the second making-up air device and outdoor heat exchanger, be also provided with the 3rd throttling arrangement.
Further, between the 3rd making-up air device and outdoor heat exchanger, be also provided with the 4th throttling arrangement.
The present invention has following beneficial effect:
Further reduce indoor heat exchanger entrance specific enthalpy by multi-level throttle and multistage tonifying Qi, improved the air compensation of compressor unit simultaneously, ability and efficiency are improved, reduced the delivery temperature of compressor unit.
Except object described above, feature and advantage, the present invention also has other object, feature and advantage.Below with reference to figure, the present invention is further detailed explanation.
Brief description of the drawings
The accompanying drawing that forms the application's a part is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is according to the schematic diagram of the first circulation embodiment of refrigerating plant of the present invention;
Fig. 2 is according to the schematic diagram of the second circulation embodiment of refrigerating plant of the present invention;
Fig. 3 changes embodiment schematic diagram according to first of the first circulation embodiment of refrigerating plant of the present invention;
Fig. 4 changes embodiment schematic diagram according to first of the second circulation embodiment of refrigerating plant of the present invention;
Fig. 5 changes embodiment schematic diagram according to second of the second circulation embodiment of refrigerating plant of the present invention;
Fig. 6 changes embodiment schematic diagram according to the 3rd of the second circulation embodiment of refrigerating plant of the present invention the;
Fig. 7 is according to the schematic diagram of the 3rd circulation embodiment of refrigerating plant of the present invention;
Fig. 8 changes embodiment schematic diagram according to second of the first circulation embodiment of refrigerating plant of the present invention;
Fig. 9 changes embodiment schematic diagram according to the 4th of the second circulation embodiment of refrigerating plant of the present invention the;
Figure 10 changes embodiment schematic diagram according to first of the 3rd circulation embodiment of refrigerating plant of the present invention;
Figure 11 is middle according to the first compressor unit schematic diagram of the second circulation embodiment of refrigerating plant of the present invention; And
Figure 12 be according to the 3rd circulation embodiment of refrigerating plant of the present invention the first compressor unit schematic diagram.
Reference numeral in accompanying drawing is as follows: 1, compression unit; 101, the first compressor unit; 102, the second compressor unit; 2, outdoor heat exchanger; 3, indoor heat exchanger; 401, first throttle device; 402, the second throttling arrangement; 403, the 3rd throttling arrangement; 404, the 4th throttling arrangement; 501, the first making-up air device; 502, the second making-up air device; 503, the 3rd making-up air device; 601, the first gas-liquid separator; 602, the second gas-liquid separator; 7, outdoor unit; 8, indoor unit.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are elaborated, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
As shown in Fig. 1 to Fig. 6, Fig. 8 and Fig. 9, refrigerating plant of the present invention comprises the outdoor heat exchanger 2, compressor unit and indoor heat exchanger 3 and the making-up air device that are connected successively, described making-up air device comprises the first making-up air device 501 and the second making-up air device 502, on the pipeline between described indoor heat exchanger 3 and described outdoor heat exchanger 2, be provided with described the first making-up air device 501 and described the second making-up air device 502 that are connected successively; Between described indoor heat exchanger 3 and described the first making-up air device 501, be provided with first throttle device 401, between described the first making-up air device 501 and described the second making-up air device 502, be provided with the second throttling arrangement 402; Described compressor unit comprises main road compression unit and auxiliary compression unit, and the gas flow equalization separating with described the second making-up air device 502 through described the first making-up air device 501 is to described main road compression unit; On the tonifying Qi pipeline between described the first making-up air device 501 and/or described the second making-up air device 502 and described main road compression unit, be provided with described auxiliary compression unit.Indoor unit 8 comprises indoor heat exchanger 3 associated components such as grade, and outdoor unit 7 comprises the associated components such as compressor 1, outdoor heat exchanger 2 and gas-liquid separator 6.
As shown in Figure 11 (a) shows, described main road compression unit comprises low pressure compression chamber and high pressure compressed chamber, described low pressure compression chamber and described high pressure compressed chamber are connected in series, gas supplementing opening in the middle of being provided with between described low pressure compression chamber and described high pressure compressed chamber, the gas outlet of the second making-up air device 502 is connected with described middle gas supplementing opening, the gas outlet of the first making-up air device 501 is connected with the exhaust outlet in described high pressure compressed chamber, between the gas outlet of described the first making-up air device 501 and the exhaust outlet in described high pressure compressed chamber, is provided with described auxiliary compression unit.
As shown in Figure 11 (b), described main road compression unit comprises low pressure compression chamber and high pressure compressed chamber, described low pressure compression chamber and described high pressure compressed chamber are connected in series, gas supplementing opening in the middle of being provided with between described low pressure compression chamber and described high pressure compressed chamber, the gas outlet of the first making-up air device 501 is connected with on described middle gas supplementing opening, the gas outlet of the second making-up air device 502 is connected with the exhaust outlet in described high pressure compressed chamber, between the gas outlet of described the second making-up air device 502 and the exhaust outlet in described high pressure compressed chamber, is provided with described auxiliary compression unit.
As shown in Figure 11 (c), described main road compression unit comprises low pressure compression chamber and high pressure compressed chamber, described low pressure compression chamber and described high pressure compressed chamber are connected in series, gas supplementing opening in the middle of being provided with between described low pressure compression chamber and described high pressure compressed chamber, the gas outlet of the first making-up air device 501 is connected with described middle gas supplementing opening, the gas outlet of described the second making-up air device 502 is connected on the air inlet of described auxiliary compression unit, the exhaust outlet of described auxiliary compression chamber be connected to described the first making-up air device 501 gas outlet and described in the middle of on tonifying Qi pipeline between gas supplementing opening.
As shown in Figure 11 (d), (e), (f), described compressor unit also comprises increase-volume compression chamber, and described increase-volume compression chamber is in parallel with described low pressure compression chamber.
As shown in Figure 11 (g), described auxiliary compression unit comprises the first auxiliary compression unit and the second auxiliary compression unit, the gas outlet of the second making-up air device 502 connects on the air inlet of the second auxiliary compression unit, the gas outlet of the first making-up air device 501 is connected on the air inlet of the first auxiliary compression unit, and the exhaust outlet of the exhaust outlet of the described first auxiliary compression unit and the described second auxiliary compression unit is all connected on the exhaust outlet of described main road compression unit.
As shown in Figure 11 (j), described auxiliary compression unit comprises the first auxiliary compression unit and the second auxiliary compression unit, the gas outlet of the second making-up air device 502 connects on the air inlet of the second auxiliary compression unit, the gas outlet of the first making-up air device 501 is connected on the air inlet of the first auxiliary compression unit, the exhaust outlet of the described second auxiliary compression unit is connected on the air inlet of the described first auxiliary compression unit, and the exhaust outlet of the described first auxiliary compression unit is connected on the exhaust outlet of described main road compression unit.
As Figure 11 (i), as shown in (l), described main road compression unit comprises low pressure compression chamber and high pressure compressed chamber, described low pressure compression chamber and described high pressure compressed chamber are connected in series; Or as shown in Figure 11 (h), (k), described main road compression unit comprises 2 compression chambers, 2 compression chambers are connected in parallel.
The compression chamber being connected with A entrance in Figure 11 (a) and (b) in compressor unit embodiment in systemic circulation as shown in Figure 2, (c) is as low-pressure stage, its capacity is Va, the compression chamber that the exhaust of low pressure compression chamber enters is as hiigh pressure stage, its capacity is Vb, the compression chamber being connected with B entrance in Figure 11 (a) and Figure 11 (b) and (c) in the compression chamber that is connected with C entrance as auxiliary compression chamber, its discharge capacity is Vc.
The discharge capacity of the compression chamber being connected with A entrance, B entrance and C entrance in the Figure 11 (g) in the compressor unit embodiment in systemic circulation as shown in Figure 2 corresponds to respectively Va, Vb and Vc.
Be R410A, R290, R32, the mixture that contains R32 and R1234ze or contain R32 and the mixture of R1234yf when refrigerating plant system adopts cold-producing medium, Figure 11 (a) and (b), (c) and (g) shown in compressor unit embodiment discharge capacity as follows than embodiment:
Figure 11 (a) and (b) and (c) in, Vb/Va ratio range is 0.5 to 1.0, further optimization range is 0.75 to 0.9.
In Figure 11 (a), during for heat pump type air conditioner, Vc/Va ratio range is 0.05 to 0.25, and further optimization range is 0.07 to 0.15; During for air source hot pump water heater, Vc/Va ratio range is 0.05 to 0.45, and further optimization range is 0.1 to 0.3.
Figure 11 (b) and (c) in, during for heat pump type air conditioner, Vc/Va ratio range is 0.07 to 0.45, further optimization range is 0.08 to 0.3; During for air source hot pump water heater, Vc/Va ratio range is 0.08 to 0.65, and further optimization range is 0.12 to 0.5.
In Figure 11 (g), during for heat pump type air conditioner, Vc/Va ratio range is 0.05 to 0.25, and further optimization range is 0.07 to 0.15; During for air source hot pump water heater, Vc/Va ratio range is 0.05 to 0.45, and further optimization range is 0.1 to 0.3.
In Figure 11 (g), during for heat pump type air conditioner, Vb/Va ratio range is 0.07 to 0.45, and further optimization range is 0.08 to 0.3; During for air source hot pump water heater, Vb/Va ratio range is 0.08 to 0.65, and further optimization range is 0.12 to 0.5.
Therein in an embodiment, as shown in Fig. 7, Figure 11, on the pipeline between described indoor heat exchanger 3 and described outdoor heat exchanger 2, be also provided with the 3rd making-up air device 503, described the 3rd making-up air device 503 is connected between described outdoor heat exchanger 2 and described the second making-up air device 502, between described the second making-up air device 502 and the 3rd making-up air device 503, be also provided with the 3rd throttling arrangement 403, main road compression unit described in the gas flow separating through described the 3rd making-up air device 503; On the tonifying Qi pipeline between described the first making-up air device 501 and described main road compression unit, be provided with a described auxiliary compression unit; On the tonifying Qi pipeline between described the second making-up air device 502 and/or described the 3rd making-up air device 503 and described main road compression unit, be provided with a described auxiliary compression unit.
As shown in Figure 12 (a), described main road compression unit comprises low pressure compression chamber and high pressure compressed chamber, described low pressure compression chamber and described high pressure compressed chamber are connected in series, gas supplementing opening in the middle of being provided with between described low pressure compression chamber and described high pressure compressed chamber, the gas outlet of described the second making-up air device 502 be connected at described centre gas supplementing opening; Described auxiliary compression unit comprises the first auxiliary compression unit and the second auxiliary compression unit; The gas outlet of described the first making-up air device 501 is connected on the air inlet of the described first auxiliary compression unit, and the exhaust outlet of the described first auxiliary compression unit is connected on the exhaust outlet in described high pressure compressed chamber; The gas outlet of described the 3rd making-up air device 503 is connected on the air inlet of the described second auxiliary compression unit, on the tonifying Qi pipeline between the gas outlet that the exhaust outlet of the described second auxiliary compression chamber is connected to described the second making-up air device 502 and described centre gas supplementing opening.
As shown in Figure 12 (b), described auxiliary compression unit comprises the first auxiliary compression unit, the second auxiliary compression unit and the 3rd auxiliary compression unit; The gas outlet of described the first making-up air device 501 is connected on the air inlet of the described first auxiliary compression unit, the gas outlet of described the second making-up air device 502 is connected on the air inlet of the described second auxiliary compression unit, and the gas outlet of described the 3rd making-up air device 503 is connected on the air inlet of the described the 3rd auxiliary compression unit; The exhaust outlet of the described first auxiliary compression unit, the second auxiliary compression unit and the 3rd auxiliary compression unit is all connected on the exhaust outlet of described main road compression unit.
Described making-up air device is flash evaporation or Intermediate Heat Exchanger, and in the embodiment as shown in Fig. 1 to Fig. 3, Fig. 7 to Figure 10, making-up air device is flash evaporation; As shown in Figure 4, the first making-up air device 501 is flash evaporation, and the second making-up air device is Intermediate Heat Exchanger; As shown in Figure 5, making-up air device is Intermediate Heat Exchanger; As shown in Figure 6, the first making-up air device 501 is Intermediate Heat Exchanger, and the second making-up air device is flash evaporation.
Fig. 1 is preferably a kind of systemic circulation scheme of the present invention, the first compressor unit 101 exhausts are after indoor heat exchanger 3, enter the first flash evaporation through first throttle device 401, the gas that the first flash evaporation is separated enters the gas supplementing opening of the first compressor unit 101, the liquid that the first flash evaporation is separated enters the second flash evaporation through the second throttling arrangement 402, the gas that the second flash evaporation is separated enters the second compressor unit 102, the liquid that the second flash evaporation is separated enters to enter the first compressor unit 101 after outdoor heat exchanger 2 evaporation through the 3rd throttling arrangement 403 is laggard.The first compressor unit 101 is with the two-spool compressor of middle gas supplementing opening or accurate secondary screw compressor, and the second compressor unit 102 is rotor compressor.The refrigerant gas that enters this compressor through the first compressor unit 101, the first gas-liquid separator 601 be compressed into intermediate pressure mix with from the refrigerant gas of gas supplementing opening and be further compressed laggard enter indoor heat exchanger 3, form main road circulation of the present invention.Enter through the second compressor unit 102, the second gas-liquid separator 602 gas supplementing opening that enters the first compressor unit 101 after gas that the refrigerant gas of this compressor separates with the first flash evaporation after compressed mixes, then import main road circulation.Compared with prior art, three grades of throttling two-stage shwoots are crossed the cold further indoor heat exchanger entrance specific enthalpy that reduced, improved the air compensation of the first compressor unit 101 simultaneously, ability and efficiency are all obviously promoted, the delivery temperature of the first compressor unit 101 also reduces simultaneously.
Fig. 2 is preferably systemic circulation scheme of another kind of the present invention, the exhaust of the first compressor unit 101 enters indoor heat exchanger 3 through D outlet, enter the first flash evaporation through first throttle device 401, the gas that the first flash evaporation is separated enters the C entrance of the first compressor unit 101, the liquid that the first flash evaporation is separated enters the second flash evaporation through the second throttling arrangement 402, the gas that the second flash evaporation is separated enters the B entrance of the first compressor unit 101, the liquid that the second flash evaporation is separated is through the laggard A entrance that enters to enter after outdoor heat exchanger 2 evaporation compressor unit of the 3rd throttling arrangement 403.
It should be noted that, in the time that this refrigerating plant is heat pump type air conditioner, this refrigerating plant is also provided with cross valve.Under heating condition, indoor heat exchanger 3 is condenser, and under cooling condition, indoor heat exchanger 3 is evaporimeter.In the time that this refrigerating plant is air energy heat pump water heater, indoor heat exchanger is condenser.
The inside of the first compressor unit 101 can be made up of 3 or 4 compression chambers, and A, B, C entrance and the D of these compression chambers and compressor unit goes out the annexation of interruption-forming Figure 11 (a) to Figure 11 (l).Figure 11 (a) is that the middle tonifying Qi of Two-stage Compression is crossed cold coupling embodiment with machinery to Figure 11 (f), Figure 11 (g), (h) are that single stage compress two-stage machinery is crossed cold example, Figure 11 is (i) that Two-stage Compression two-stage machinery is crossed cold embodiment, and Figure 11 (j) to (l) is that single-stage or Two-stage Compression two-stage machinery are crossed cold middle tonifying Qi embodiment.Thereby aforementioned system recycle scheme is all crossed cold further reduction evaporation entrance specific enthalpy and reached the object of raising ability and efficiency by two-stage, also reduce the mixing exhaust temperature of compressor unit simultaneously.
Fig. 3 is that the one of the refrigeration system circulation shown in Fig. 1 changes, and different from Fig. 1, the exhaust of the second compressor unit 102 enters the first flash evaporation, is conducive to reduce the tonifying Qi degree of superheat.
Fig. 4 to Fig. 6 is three kinds of changes of system shown in Figure 2 circulation, and the first flash evaporation and/or the second flash evaporation are replaced as Intermediate Heat Exchanger.
Fig. 1 has all reduced the specific enthalpy of outdoor heat exchanger 2 entrances through crossing for twice cold from indoor heat exchanger 3 out to the cold-producing medium in system shown in Figure 6 circulation, and system shown in Figure 7 circulation to outdoor heat exchanger cold-producing medium out carry out three times excessively cold, the like can build by N(>=3) systemic circulation of individual flash evaporation and/or Intermediate Heat Exchanger series connection, to outdoor heat exchanger cold-producing medium out carry out N time excessively cold.Figure 12 (a) and (b) be the inner composition of compressor unit in Fig. 7 and annexation example.
Fig. 8 is that in the refrigeration system shown in Fig. 1, the 3rd throttling arrangement is cancelled or the special case of throttling arrangement while being electric expansion valve standard-sized sheet.
Fig. 9 is that in the refrigeration system shown in Fig. 2, the 3rd throttling arrangement is cancelled or the special case of the 3rd throttling arrangement while being electric expansion valve standard-sized sheet, and the compressor unit in the refrigeration system shown in Fig. 9 can be other any one forms except (a) and (d) in Figure 11.
Figure 10 is that in the refrigeration system shown in Fig. 7, the 4th throttling arrangement is cancelled or the special case of the 4th throttling arrangement while being electric expansion valve standard-sized sheet.
Refrigeration system shown in Fig. 8 to Figure 10 makes the cold-producing medium that enters indoor heat exchanger reach or be approximately saturated liquid, has farthest improved the caloric receptivity of unit mass cold-producing medium and has reduced compression ratio merit.
The flash evaporation of refrigerating plant of the present invention can be unidirectional flash evaporation or two-way flash evaporation, can be also that other have the flash evaporation of mending gas carrying liquid function.The first throttle device of refrigerating plant of the present invention and the second throttling arrangement can be capillary, restriction sleeve, heating power expansion valve, electric expansion valve, restricting orifice or aforementioned any reasonable combination.
As can be seen from the above description, the above embodiments of the present invention have realized following technique effect:
Refrigerating plant of the present invention can significantly improve heating capacity and the coefficient of performance for heat pump occasion, can significantly improve refrigerating capacity and Energy Efficiency Ratio for air-conditioning occasion, all can obviously reduce hiigh pressure stage delivery temperature or mixing exhaust temperature simultaneously.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims (22)

1. a refrigerating plant, comprise the outdoor heat exchanger (2), compressor unit, indoor heat exchanger (3) and the making-up air device that are connected successively, it is characterized in that, described making-up air device comprises the first making-up air device (501) and the second making-up air device (502), on the pipeline between described indoor heat exchanger (3) and described outdoor heat exchanger (2), be provided with described the first making-up air device (501) and described the second making-up air device (502) that are connected successively;
Wherein, between described indoor heat exchanger (3) and described the first making-up air device (501), be provided with first throttle device (401), between described the first making-up air device (501) and described the second making-up air device (502), be provided with the second throttling arrangement (402);
Described compressor unit comprises main road compression unit and auxiliary compression unit, and the gas flow equalization separating with described the second making-up air device (502) through described the first making-up air device (501) is to described main road compression unit; On the tonifying Qi pipeline between described the first making-up air device (501) and/or described the second making-up air device (502) and described main road compression unit, be provided with described auxiliary compression unit.
2. refrigerating plant according to claim 1, is characterized in that,
Described main road compression unit comprises low pressure compression chamber and high pressure compressed chamber, described low pressure compression chamber and described high pressure compressed chamber are connected in series, gas supplementing opening in the middle of being provided with between described low pressure compression chamber and described high pressure compressed chamber, the gas outlet of the second making-up air device (502) is connected with described middle gas supplementing opening, the gas outlet of the first making-up air device (501) is connected with the exhaust outlet in described high pressure compressed chamber, between the gas outlet of described the first making-up air device (501) and the exhaust outlet in described high pressure compressed chamber, is provided with described auxiliary compression unit.
3. refrigerating plant according to claim 1, it is characterized in that, described main road compression unit comprises low pressure compression chamber and high pressure compressed chamber, described low pressure compression chamber and described high pressure compressed chamber are connected in series, gas supplementing opening in the middle of being provided with between described low pressure compression chamber and described high pressure compressed chamber, the gas outlet of the first making-up air device (501) is connected with on described middle gas supplementing opening, the gas outlet of the second making-up air device (502) is connected with the exhaust outlet in described high pressure compressed chamber, between the gas outlet of described the second making-up air device (502) and the exhaust outlet in described high pressure compressed chamber, be provided with described auxiliary compression unit.
4. refrigerating plant according to claim 1, it is characterized in that, described main road compression unit comprises low pressure compression chamber and high pressure compressed chamber, described low pressure compression chamber and described high pressure compressed chamber are connected in series, gas supplementing opening in the middle of being provided with between described low pressure compression chamber and described high pressure compressed chamber, the gas outlet of the first making-up air device (501) is connected with described middle gas supplementing opening, the gas outlet of described the second making-up air device (502) is connected on the air inlet of described auxiliary compression unit, the exhaust outlet of described auxiliary compression unit be connected to described the first making-up air device (501) gas outlet and described in the middle of on tonifying Qi pipeline between gas supplementing opening.
5. according to the refrigerating plant described in claim 2 to 4 any one, it is characterized in that, described compressor unit also comprises increase-volume compression chamber, and described increase-volume compression chamber is in parallel with described low pressure compression chamber.
6. refrigerating plant according to claim 1, it is characterized in that, described auxiliary compression unit comprises the first auxiliary compression unit and the second auxiliary compression unit, the gas outlet of the second making-up air device (502) connects on the air inlet of the second auxiliary compression unit, the gas outlet of the first making-up air device (501) is connected on the air inlet of the first auxiliary compression unit, and the exhaust outlet of the exhaust outlet of the described first auxiliary compression unit and the described second auxiliary compression unit is all connected on the exhaust outlet of described main road compression unit.
7. refrigerating plant according to claim 1, it is characterized in that, described auxiliary compression unit comprises the first auxiliary compression unit and the second auxiliary compression unit, the gas outlet of the second making-up air device (502) connects on the air inlet of the second auxiliary compression unit, the gas outlet of the first making-up air device (501) is connected on the air inlet of the first auxiliary compression unit, the exhaust outlet of the described second auxiliary compression unit is connected on the air inlet of the described first auxiliary compression unit, and the exhaust outlet of the described first auxiliary compression unit is connected on the exhaust outlet of described main road compression unit.
8. according to the refrigerating plant described in claim 6 or 7, it is characterized in that, described main road compression unit comprises low pressure compression chamber and high pressure compressed chamber, and described low pressure compression chamber and described high pressure compressed chamber are connected in series; Or described main road compression unit comprises 2 compression chambers, 2 compression chambers are connected in parallel.
9. refrigerating plant according to claim 1, it is characterized in that, on the pipeline between described indoor heat exchanger (3) and described outdoor heat exchanger (2), be also provided with the 3rd making-up air device (503), described the 3rd making-up air device (503) is connected between described outdoor heat exchanger (2) and described the second making-up air device (502), between described the second making-up air device (502) and the 3rd making-up air device (503), be also provided with the 3rd throttling arrangement (402), through main road compression unit described in the gas flow of described the 3rd making-up air device (503) separation; On the tonifying Qi pipeline between described the first making-up air device (501) and described main road compression unit, be provided with a described auxiliary compression unit; On the tonifying Qi pipeline between described the second making-up air device (502) and/or described the 3rd making-up air device (503) and described main road compression unit, be provided with a described auxiliary compression unit.
10. refrigerating plant according to claim 9, it is characterized in that, described main road compression unit comprises low pressure compression chamber and high pressure compressed chamber, described low pressure compression chamber and described high pressure compressed chamber are connected in series, gas supplementing opening in the middle of being provided with between described low pressure compression chamber and described high pressure compressed chamber, the gas outlet of described the second making-up air device (502) be connected at described centre gas supplementing opening; Described auxiliary compression unit comprises the first auxiliary compression unit and the second auxiliary compression unit; The gas outlet of described the first making-up air device (501) is connected on the air inlet of the described first auxiliary compression unit, and the exhaust outlet of the described first auxiliary compression unit is connected on the exhaust outlet in described high pressure compressed chamber; The gas outlet of described the 3rd making-up air device (503) is connected on the air inlet of the described second auxiliary compression unit, on the tonifying Qi pipeline between the gas outlet that the exhaust outlet of the described second auxiliary compression chamber is connected to described the second making-up air device (502) and described centre gas supplementing opening.
11. refrigerating plants according to claim 9, is characterized in that, described auxiliary compression unit comprises the first auxiliary compression unit, the second auxiliary compression unit and the 3rd auxiliary compression unit; The gas outlet of described the first making-up air device (501) is connected on the air inlet of the described first auxiliary compression unit, the gas outlet of described the second making-up air device (502) is connected on the air inlet of the described second auxiliary compression unit, and the gas outlet of described the 3rd making-up air device (503) is connected on the air inlet of the described the 3rd auxiliary compression unit; The exhaust outlet of the described first auxiliary compression unit, the second auxiliary compression unit and the 3rd auxiliary compression unit is all connected on the exhaust outlet of described main road compression unit.
12. according to the refrigerating plant described in claim 2 to 4 any one, it is characterized in that, the capacity of described low pressure compression chamber is Va, and the capacity in described high pressure compressed chamber is Vb; Refrigerating plant system adopts cold-producing medium to be R410A, R290, R32, the mixture that contains R32 and R1234ze or to contain R32 and the mixture of R1234yf; Wherein, the ratio range of Vb and Va is 0.5 to 1.0.
13. refrigerating plants according to claim 12, is characterized in that, the ratio range of Vb and Va is 0.75 to 0.9.
14. refrigerating plants according to claim 2, is characterized in that, the capacity of described low pressure compression chamber is Va, and the capacity of described auxiliary compression unit is Vc; Refrigerating plant system adopts cold-producing medium to be R410A, R290, R32, the mixture that contains R32 and R1234ze or to contain R32 and the mixture of R1234yf; Wherein, in the time that described refrigerating plant is used for heat pump type air conditioner, the ratio range of Vc and Va is 0.05 to 0.25; Or in the time that described refrigerating plant is used for air source hot pump water heater, the ratio range of Vc and Va is 0.05 to 0.45.
15. refrigerating plants according to claim 14, is characterized in that, in the time that described refrigerating plant is used for heat pump type air conditioner, the ratio range of Vc and Va is 0.07 to 0.15; Or in the time that described refrigerating plant is used for air source hot pump water heater, the ratio range of Vc and Va is 0.1 to 0.3.
16. according to the refrigerating plant described in claim 3 or 4, it is characterized in that, the capacity of described low pressure compression chamber is Va, and the capacity of described auxiliary compression unit is Vc; Refrigerating plant system adopts cold-producing medium to be R410A, R290, R32, the mixture that contains R32 and R1234ze or to contain R32 and the mixture of R1234yf; Wherein, in the time that described refrigerating plant is used for heat pump type air conditioner, the ratio range of Vc and Va is 0.07 to 0.45; Or in the time that described refrigerating plant is used for air source hot pump water heater, the ratio range of Vc and Va is 0.08 to 0.65.
17. refrigerating plants according to claim 16, is characterized in that, in the time that described refrigerating plant is used for heat pump type air conditioner, the ratio range of Vc and Va is 0.08 to 0.3; Or in the time that described refrigerating plant is used for air source hot pump water heater, the ratio range of Vc and Va is 0.12 to 0.5.
18. refrigerating plants according to claim 6, is characterized in that, the capacity of described main road compression unit is Va, and the capacity of the described first auxiliary compression unit is Vc, and the described second auxiliary compression unit is Vb; Refrigerating plant system adopts cold-producing medium to be R410A, R290, R32, the mixture that contains R32 and R1234ze or to contain R32 and the mixture of R1234yf; Wherein, when described refrigerating plant is when the heat pump type air conditioner, the ratio range of Vb and Va be 0.07 to 0.45, Vc and the ratio range of Va be 0.05 to 0.25; Or, when described refrigerating plant is when the air source hot pump water heater, the ratio range of Vb and Va be 0.08 to 0.65, Vc and the ratio range of Va be 0.05 to 0.45.
19. refrigerating plants according to claim 16, is characterized in that, when described refrigerating plant is when the heat pump type air conditioner, the ratio range of Vb and Va be 0.08 to 0.3, Vc and the ratio range of Va be 0.07 to 0.15; Or, when described refrigerating plant is when the air source hot pump water heater, the ratio range of Vb and Va be 0.12 to 0.5, Vc and the ratio range of Va be 0.1 to 0.3.
20. according to the refrigerating plant described in claim 1,2,3,4,6,7,9,10 or 11, it is characterized in that, described making-up air device is flash evaporation or Intermediate Heat Exchanger.
21. according to the refrigerating plant described in claim 1,2,3,4,6 or 7, it is characterized in that, be also provided with the 3rd throttling arrangement (403) between described the second making-up air device (502) and described outdoor heat exchanger (2).
22. according to the refrigerating plant described in claim 9,10 or 11, it is characterized in that, between described the 3rd making-up air device (503) and described outdoor heat exchanger (2), is also provided with the 4th throttling arrangement (404).
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