CN215176171U - Air-cooled heat pump type water chilling unit - Google Patents
Air-cooled heat pump type water chilling unit Download PDFInfo
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- CN215176171U CN215176171U CN202120895758.1U CN202120895758U CN215176171U CN 215176171 U CN215176171 U CN 215176171U CN 202120895758 U CN202120895758 U CN 202120895758U CN 215176171 U CN215176171 U CN 215176171U
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Abstract
The utility model discloses an air-cooled heat pump type water chilling unit, which comprises a compressor, a four-way reversing valve, an air heat exchanger, a refrigerant distributor, an expansion valve, an evaporator and a gas-liquid separator; the compressor, the gas-liquid separator and the four-way reversing valve are annularly connected by pipelines; the four-way reversing valve is sequentially connected with the evaporator, the expansion valve and the refrigerant distributor and is connected with the air heat exchanger, and the refrigerant distributor is connected with the air heat exchanger; the refrigerant distributor feed liquor pipe upper end is equipped with 4 holes as main access & exit all around, is equipped with 4 holes as oil balance mouth at the feed liquor pipe lower extreme. The utility model is provided with the hole on the oil inlet pipe of the refrigerant distributor, which can ensure even liquid distribution in the heating mode; and secondly, the circulation problem of the refrigerating machine oil can be well solved.
Description
Technical Field
The utility model relates to a cooling water set especially relates to an air-cooled heat pump type cooling water set.
Background
For an air-cooled heat pump type cold and hot water unit, a fin type heat exchanger is used as an evaporator during heating circulation. If there are multiple heat exchangers in the unit, in the refrigeration cycle, a liquid collector is generally disposed behind the condensers for collecting liquid refrigerant from the multiple condensers. When the heating mode is entered, after the expansion valve is arranged, gas-liquid two phases are formed in the pipe, and the liquid collector needs to have a liquid separation function; the liquid collector is also used as a liquid separator, and the existing scheme does not effectively solve the problem, such as the use of common tee joints (Y-shaped, T-shaped, flattened tee joints and common liquid collectors) for collecting and summarizing liquid in a refrigeration mode, but the liquid collector is used as a liquid separator in a heating mode, so that the problem of refrigerant distribution cannot be well solved; the main structure of the traditional refrigerant distributor is a section of steel pipe, and then a hole is formed in the steel pipe, and the steel pipe is vertically installed, but the refrigerant distributor is accumulated with oil and is unevenly distributed.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the utility model aims at providing a divide liquid under the heating mode evenly and refrigerator oil circulation is good air-cooled heat pump formula cooling water set.
The technical scheme is as follows: the utility model discloses an air-cooled heat pump type water chilling unit, including the compressor that is used for compressing low temperature low pressure gaseous state refrigerant into high temperature high pressure gaseous state refrigerant, a four-way reversing valve for refrigerating/heating switching operation, an air heat exchanger for making low temperature low pressure liquid state refrigerant absorb heat and vaporize into low temperature low pressure gaseous state refrigerant when heating operation, a refrigerant distributor, an expansion valve for stepping down the liquid low temperature high pressure refrigerant discharged by the flooded evaporator when refrigerating or heating operation, an evaporator for making low temperature low pressure liquid state refrigerant absorb heat and vaporize into low temperature low pressure gaseous state refrigerant when refrigerating operation and a vapour and liquid separator for handling the gas that contains the lime set and realizing lime set recovery or gaseous phase purification; the compressor, the gas-liquid separator and the four-way reversing valve are annularly connected by pipelines; the four-way reversing valve is sequentially connected with the evaporator, the expansion valve and the refrigerant distributor and is connected with the air heat exchanger, and the refrigerant distributor is connected with the air heat exchanger; the refrigerant distributor feed liquor pipe upper end is equipped with 4 holes as main access & exit all around, is equipped with 4 holes as oil balance mouth at the feed liquor pipe lower extreme.
The number of the air heat exchangers is two, and the two air heat exchangers are respectively arranged on two sides of the refrigerant distributor; the liquid inlet pipe in the middle of the refrigerant distributor is made of steel; the liquid inlet pipe of the refrigerant distributor is connected with the expansion valve; the liquid outlet pipes on two sides of the refrigerant distributor are respectively connected with the air heat exchangers on two sides.
In the utility model, the four-way reversing valve comprises a first interface end to a fourth interface end, when the first interface end is communicated with the second interface end and the third interface end is communicated with the fourth interface end, condensed liquid refrigerant flows through the expansion valve after being collected by the refrigerant distributor, and the low-pressure gas-liquid mixed refrigerant after being throttled enters the evaporator to be evaporated; the low-pressure gaseous refrigerant with a certain superheat degree passes through the third port end and the fourth port end of the four-way reversing valve, passes through the gas-liquid separator and enters the air suction port of the compressor for compression.
The compressor discharges high-pressure gaseous refrigerant, the high-pressure gaseous refrigerant enters the evaporator through the four-way reversing valve, the condensed liquid refrigerant is throttled by the expansion valve, and the throttled gas-liquid two-phase refrigerant enters the refrigerant distributor and enters the air heat exchanger for evaporation after being distributed; the low-pressure gaseous refrigerant with a certain superheat degree passes through the first interface end and the third interface end of the four-way reversing valve, passes through the gas-liquid separator and enters the air suction port of the compressor to be compressed.
Has the advantages that: compared with the prior art, the utility model has the advantages of as follows: the oil inlet pipe of the refrigerant distributor is provided with the hole, so that even liquid distribution can be ensured in the heating mode; and secondly, the circulation problem of the refrigerating machine oil can be well solved.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the refrigerant distributor of the present invention.
Detailed Description
The technical solution of the present invention will be further explained with reference to the accompanying drawings 1-2.
The air-cooled heat pump type water chilling unit comprises a compressor 1 for compressing low-temperature and low-pressure gaseous refrigerants into high-temperature and high-pressure gaseous refrigerants, a four-way reversing valve 2 for cooling/heating switching operation, an air heat exchanger 3 for absorbing heat and vaporizing low-temperature and low-pressure liquid refrigerants into low-temperature and low-pressure gaseous refrigerants during heating operation, a refrigerant distributor 4, an expansion valve 5 for reducing pressure of the liquid low-temperature and high-pressure refrigerants discharged by a flooded evaporator during cooling or heating operation, an evaporator 6 for absorbing heat and vaporizing low-temperature and low-pressure liquid refrigerants into low-temperature and low-pressure gaseous refrigerants during cooling operation, and a gas-liquid separator 7 for processing gas containing condensate to realize condensate recovery or gas-phase purification.
The compressor 1, the gas-liquid separator 7 and the four-way reversing valve 2 are annularly connected by pipelines; the four-way reversing valve 2 is sequentially connected with the evaporator 6, the expansion valve 5 and the refrigerant distributor 4 and is connected with the air heat exchanger 3, and the refrigerant distributor 4 is connected with the air heat exchanger 3.
The periphery of the upper end of a liquid inlet pipe 8 of the refrigerant distributor 4 is provided with 4 holes 14 as main inlets and outlets, and the lower end of the liquid inlet pipe 8 is provided with 4 holes 15 as oil balance ports.
The number of the air heat exchangers 3 is two, and the two air heat exchangers are respectively arranged at two sides of the refrigerant distributor 4.
The liquid inlet pipe in the middle of the refrigerant distributor 4 is made of steel.
The liquid inlet pipe 8 of the refrigerant distributor 4 is connected with the expansion valve 5.
The four-way reversing valve 2 comprises a first interface end 10 to a fourth interface end 13, when the first interface end 10 is communicated with the second interface end 11, and the third interface end 12 is communicated with the fourth interface end 13, condensed liquid refrigerants are converged by the refrigerant distributor 4 and then flow through the expansion valve 5, and the throttled low-pressure gas-liquid mixed refrigerant enters the evaporator 6 to be evaporated; the low-pressure gaseous refrigerant with a certain superheat degree passes through the third port end 12 and the fourth port end 13 of the four-way reversing valve 2, passes through the gas-liquid separator 7, and enters the air suction port of the compressor 1 for compression.
High-pressure gaseous refrigerants discharged by a compressor 1 enter an evaporator 6 through a four-way reversing valve 2, condensed liquid refrigerants flow through an expansion valve 5 for throttling, and throttled gas-liquid two-phase refrigerants enter a refrigerant distributor 4 and enter an air heat exchanger 3 for evaporation after being distributed; the low-pressure gaseous refrigerant with a certain superheat degree passes through the first joint end 10 and the third joint end 12 of the four-way reversing valve 2, passes through the gas-liquid separator 7, and enters the air suction port of the compressor 1 to be compressed.
Claims (7)
1. An air-cooled heat pump type water chilling unit is characterized by comprising a compressor (1) for compressing low-temperature and low-pressure gaseous refrigerants into high-temperature and high-pressure gaseous refrigerants, a four-way reversing valve (2) for refrigerating/heating switching operation, an air heat exchanger (3) for absorbing heat and vaporizing low-temperature and low-pressure liquid refrigerants into low-temperature and low-pressure gaseous refrigerants during heating operation, a refrigerant distributor (4), an expansion valve (5) for reducing pressure of the liquid low-temperature and high-pressure refrigerants discharged by a flooded evaporator during refrigerating or heating operation, an evaporator (6) for absorbing heat and vaporizing low-temperature and low-pressure liquid refrigerants into low-temperature and low-pressure gaseous refrigerants during refrigerating operation, and a gas-liquid separator (7) for treating gas containing condensate to realize condensate recovery or gas phase purification; the compressor (1), the gas-liquid separator (7) and the four-way reversing valve (2) are connected in an annular mode through pipelines; the four-way reversing valve (2) is sequentially connected with the evaporator (6), the expansion valve (5) and the refrigerant distributor (4) and is connected with the air heat exchanger (3), and the refrigerant distributor (4) is connected with the air heat exchanger (3); the refrigerant distributor (4) is equipped with hole (14) as main access & exit all around on refrigerant feed pipe (8) upper end, is equipped with hole (15) as oil balance mouth 4 at refrigerant feed pipe (8) lower extreme.
2. An air-cooled heat pump water chiller according to claim 1, wherein the number of air heat exchangers (3) is two, and the two air heat exchangers are respectively disposed on both sides of the refrigerant distributor (4).
3. An air-cooled heat pump water chiller according to claim 1, wherein an inlet pipe in the middle of the refrigerant distributor (4) is made of steel.
4. An air-cooled heat pump water chiller according to claim 1, wherein the inlet pipe (8) of the refrigerant distributor (4) is connected to the expansion valve (5).
5. An air-cooled heat pump water chiller according to claim 1, wherein the liquid outlets (9) of the refrigerant distributor (4) on both sides are connected to the air heat exchangers (3) on both sides, respectively.
6. The air-cooled heat pump water chilling unit according to claim 1, wherein the four-way selector valve (2) includes a first connection end (10) to a fourth connection end (13), when the first connection end (10) is connected to the second connection end (11) and the third connection end (12) is connected to the fourth connection end (13), condensed liquid refrigerant is collected by the refrigerant distributor (4) and then flows through the expansion valve (5), and the throttled low-pressure gas-liquid mixed refrigerant enters the evaporator (6) to be evaporated; the low-pressure gaseous refrigerant with a certain superheat degree passes through a third port end (12) and a fourth port end (13) of the four-way reversing valve (2), passes through a gas-liquid separator (7) and enters an air suction port of the compressor (1) to be compressed.
7. The air-cooled heat pump type water chilling unit according to claim 1, wherein the compressor (1) discharges high-pressure gaseous refrigerant, the high-pressure gaseous refrigerant enters the evaporator (6) through the four-way reversing valve (2), the condensed liquid refrigerant flows through the expansion valve (5) for throttling, the throttled gas-liquid two-phase refrigerant enters the refrigerant distributor (4), and the gas-liquid two-phase refrigerant enters the air heat exchanger (3) for evaporation after being distributed; the low-pressure gaseous refrigerant with a certain superheat degree passes through a first interface end (10) and a third interface end (12) of a four-way reversing valve (2), passes through a gas-liquid separator (7), and enters an air suction port of a compressor (1) to be compressed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120895758.1U CN215176171U (en) | 2021-04-28 | 2021-04-28 | Air-cooled heat pump type water chilling unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120895758.1U CN215176171U (en) | 2021-04-28 | 2021-04-28 | Air-cooled heat pump type water chilling unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215176171U true CN215176171U (en) | 2021-12-14 |
Family
ID=79364532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120895758.1U Active CN215176171U (en) | 2021-04-28 | 2021-04-28 | Air-cooled heat pump type water chilling unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215176171U (en) |
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2021
- 2021-04-28 CN CN202120895758.1U patent/CN215176171U/en active Active
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