Energy-saving heat exchange system applied to interior of refrigerating machine
The energy-saving heat exchange system, consisting of a siphon tank, an oil separator, and a two-phase heat exchanger, solves the problem of unstable refrigerant temperature after condensation in an evaporative condenser, achieves stable control of lubricating oil temperature, and reduces the energy consumption of the refrigeration unit.
Patent Information
- Application Number
- CN202520130816.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-01-20
AI Technical Summary
In refrigeration machines, the temperature of the refrigerant after condensation in an evaporative condenser is unstable, making it difficult to effectively control the temperature of the lubricating oil, which leads to increased energy consumption.
An energy-saving heat exchange system consisting of a siphon tank, an oil separator, and a two-phase heat exchanger is used to adjust the heat exchange ratio between the high-temperature liquid lubricating oil and the condensed liquid refrigerant through a flow control valve, thereby achieving stable control of the lubricating oil temperature.
Effective control of lubricating oil temperature within a suitable range reduces the energy consumption of the refrigeration unit.
Smart Images
Figure CN223726623U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of refrigeration equipment, concretely relates to a kind of energy-saving heat exchange systems applied to the interior of refrigeration machine. BACKGROUND
[0002] In the refrigeration machine, the lubricating oil of each mechanical component needs to be kept in a suitable temperature range, if the temperature is too low, the lubricating effect will be reduced by mixing refrigerant, and if the temperature is too high, the effect of the lubricating oil itself will be reduced. The refrigerant condensed by the evaporative condenser has a relatively low temperature, but this temperature is affected by external working conditions, and it is difficult to control the stability of its temperature, so it cannot be used for cooling the lubricating oil, and an external cooler is needed to control the temperature of the lubricating oil, which causes the overall energy consumption of the refrigeration machine to be large. SUMMARY
[0003] The utility model aims at providing a kind of energy-saving heat exchange systems applied to the interior of refrigeration machine, and the specific technical solutions are as follows:
[0004] A kind of energy-saving heat exchange systems applied to the interior of refrigeration machine, comprising: siphon tank, siphon tank is communicated with evaporative condenser, for receiving the liquid-phase refrigerant condensed by evaporative condenser;Oil separator, oil separator is communicated with compressor, for receiving the high-temperature and high-pressure steam compressed by compressor, oil separator is used to separate the received high-temperature and high-pressure steam into high-temperature and high-pressure gas-phase refrigerant and high-temperature liquid-phase lubricating oil;Double-phase heat exchanger, one phase of double-phase heat exchanger is communicated with siphon tank, for flowing through the liquid-phase refrigerant condensed, another phase of double-phase heat exchanger is communicated with oil separator, for flowing through the high-temperature liquid-phase lubricating oil separated, the phase of double-phase heat exchanger flowing through high-temperature liquid-phase lubricating oil is communicated outside double-phase heat exchanger by flow control valve.
[0005] The siphon tank is provided with a condensed refrigerant inlet pipe, a condensed refrigerant outlet pipe, a heat exchange outlet pipe and a heat exchange inlet pipe, the condensed refrigerant inlet pipe and the condensed refrigerant outlet pipe are arranged on the upper portion of the siphon tank, the condensed refrigerant inlet pipe is arranged at a higher horizontal level than the condensed refrigerant outlet pipe, the heat exchange inlet pipe is arranged at a higher horizontal level than the condensed refrigerant outlet pipe, and the heat exchange outlet pipe is arranged on the lower portion or the bottom of the siphon tank; the oil separator is provided with a high-temperature high-pressure steam inlet pipe, a high-temperature liquid-phase lubricating oil outlet pipe and a high-temperature high-pressure gas-phase refrigerant outlet pipe, the high-temperature high-pressure steam inlet pipe is arranged on the upper portion of the oil separator, the high-temperature liquid-phase lubricating oil outlet pipe is arranged on the lower portion of the oil separator, and the high-temperature high-pressure gas-phase refrigerant outlet pipe is arranged on the top of the oil separator; the high-temperature high-pressure steam inlet pipe is communicated with the compressor, and the high-temperature high-pressure steam discharged by the compressor enters the oil separator through the high-temperature high-pressure steam inlet pipe and is separated into high-temperature liquid-phase lubricating oil and high-temperature high-pressure gas-phase refrigerant; the dual-phase heat exchanger comprises a first-phase inlet pipe, a first-phase outlet pipe, a second-phase inlet pipe and a second-phase outlet pipe, the first-phase inlet pipe is communicated with the heat exchange outlet pipe of the siphon tank, the first-phase outlet pipe is communicated with the heat exchange inlet pipe of the siphon tank, and the condensed liquid-phase refrigerant in the siphon tank flows in the first phase of the dual-phase heat exchanger, the second-phase inlet pipe is communicated with the high-temperature liquid-phase lubricating oil outlet pipe of the oil separator, and the second-phase outlet pipe is communicated with the lubricating oil inlets of various machines, so that the heat-exchanged lubricating oil is fed into the various machines.
[0006] The high-temperature high-pressure gas-phase refrigerant outlet pipe of the oil separator is communicated with the evaporative condenser through a gas return pipe, so that the high-temperature high-pressure gas-phase refrigerant separated by the oil separator is fed into the evaporative condenser to be condensed, and the top of the siphon tank is provided with a gas-phase balance pipe, the gas-phase balance pipe of the siphon tank is communicated with the gas return pipe through a stop valve, so as to adjust the gas-phase pressure in the gas return pipe.
[0007] The high-temperature lubricating oil outlet pipe of the oil separator is provided with a replaceable oil filter, so as to gather impurities in the lubricating oil and separate the impurities from the lubricating oil circulation.
[0008] The above technical scheme of the utility model has the following beneficial technical effects: the high-temperature liquid-phase lubricating oil is communicated with the condensed liquid-phase refrigerant outside the dual-phase heat exchanger through the flow control valve, so that the proportion of the high-temperature liquid-phase lubricating oil exchanged with the condensed liquid-phase refrigerant can be adjusted in real time, the proportion of the heat exchange is reduced when the temperature of the condensed liquid-phase refrigerant is low, and the proportion of the heat exchange is increased when the temperature of the condensed liquid-phase refrigerant is high. In this way, although the temperature of the condensed liquid-phase refrigerant is unstable, the heat exchange proportion can be adjusted by adjusting the flow control valve, so that the temperature of the lubricating oil can be controlled in the most suitable range. BRIEF DESCRIPTION OF DRAWINGS
[0009] Figure 1 It is a structural schematic diagram of the utility model;
[0010] Wherein: 1 - siphon tank, 2 - oil separator, 3 - two-phase heat exchanger, 4 - flow control valve, 5 - oil filter. DETAILED DESCRIPTION
[0011] To make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further explained in detail below in combination with specific implementation manners and with reference to the drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.
[0012] An energy-saving heat exchange system applied to the inside of a refrigeration machine, comprising: a siphon tank 1, the siphon tank 1 being communicated with an evaporative condenser and used for receiving liquid-phase refrigerant condensed by the evaporative condenser; an oil separator 2, the oil separator 2 being communicated with a compressor and used for receiving high-temperature and high-pressure steam compressed by the compressor, the oil separator 2 being used for separating the received high-temperature and high-pressure steam into high-temperature and high-pressure gas-phase refrigerant and high-temperature liquid-phase lubricating oil; a two-phase heat exchanger 3, one phase of the two-phase heat exchanger 3 being communicated with the siphon tank 1 and used for circulating the liquid-phase refrigerant condensed, the other phase of the two-phase heat exchanger 3 being communicated with the oil separator 2 and used for circulating the high-temperature liquid-phase lubricating oil separated, and the phase of the two-phase heat exchanger 3 circulating the high-temperature liquid-phase lubricating oil being communicated outside the two-phase heat exchanger 3 through a flow control valve 4. The high-temperature liquid-phase lubricating oil is communicated outside the two-phase heat exchanger 3 through the flow control valve 4, so that the proportion of the high-temperature liquid-phase lubricating oil exchanged with the liquid-phase refrigerant condensed can be adjusted in real time, the proportion of the exchange is reduced when the temperature of the liquid-phase refrigerant condensed is lower, and the proportion of the exchange is increased when the temperature of the liquid-phase refrigerant condensed is higher. In this way, although the temperature of the liquid-phase refrigerant condensed is unstable, the exchange proportion can be adjusted by adjusting the flow control valve 4, so that the temperature of the lubricating oil is controlled in the most suitable range.
[0013] The siphon tank 1 is provided with a condensed refrigerant inlet pipe, a condensed refrigerant outlet pipe, a heat exchange outlet pipe and a heat exchange inlet pipe. The condensed refrigerant inlet pipe and the condensed refrigerant outlet pipe are arranged at the upper part of the siphon tank 1, and the condensed refrigerant inlet pipe is arranged at a higher level than the condensed refrigerant outlet pipe. The heat exchange inlet pipe is arranged at a higher level than the condensed refrigerant outlet pipe, and the heat exchange outlet pipe is arranged at the lower part or the bottom of the siphon tank 1. The oil separator 2 is provided with a high-temperature high-pressure steam inlet pipe, a high-temperature liquid-phase lubricating oil outlet pipe and a high-temperature high-pressure gas-phase refrigerant outlet pipe. The high-temperature high-pressure steam inlet pipe is arranged at the upper part of the oil separator 2, the high-temperature liquid-phase lubricating oil outlet pipe is arranged at the lower part of the oil separator 2, and the high-temperature high-pressure gas-phase refrigerant outlet pipe is arranged at the top of the oil separator 2. The high-temperature high-pressure steam inlet pipe is connected to the compressor. The high-temperature high-pressure steam discharged from the compressor enters the oil separator 2 through the high-temperature high-pressure steam inlet pipe and is separated into high-temperature liquid-phase lubricating oil and high-temperature high-pressure gas-phase refrigerant. The two-phase heat exchanger 3 includes a first-phase inlet pipe, a first-phase outlet pipe, a second-phase inlet pipe and a second-phase outlet pipe. The first-phase inlet pipe is connected to the heat exchange outlet pipe of the siphon tank 1, and the first-phase outlet pipe is connected to the heat exchange inlet pipe of the siphon tank 1, so as to make the condensed liquid-phase refrigerant in the siphon tank 1 flow in the first phase of the two-phase heat exchanger 3. The second-phase inlet pipe is connected to the high-temperature liquid-phase lubricating oil outlet pipe of the oil separator 2, and the second-phase outlet pipe is connected to the lubricating oil inlet of each machine, so as to send the heat-exchanged lubricating oil into each machine.
[0014] The high-temperature high-pressure gas-phase refrigerant outlet pipe of the oil separator 2 is connected to the evaporative condenser through a gas return pipe, so as to send the high-temperature high-pressure gas-phase refrigerant separated from the oil separator 2 into the evaporative condenser for condensation. The top of the siphon tank 1 is provided with a gas-phase balance pipe, and the gas-phase balance pipe of the siphon tank 1 is connected to the gas return pipe through a stop valve, so as to adjust the gas-phase pressure in the gas return pipe.
[0015] The high-temperature lubricating oil outlet pipe of the oil separator 2 is provided with a replaceable oil filter 5, which is used to collect impurities in the lubricating oil and separate the impurities from the lubricating oil circulation.
Claims
1. An energy saving heat exchange system applied to the inside of a refrigerator, characterized in that, Comprise: a siphon tank (1) in communication with an evaporative condenser for receiving condensed liquid phase refrigerant from the evaporative condenser; an oil separator (2) in communication with a compressor for receiving high temperature and high pressure vapor compressed by the compressor, the oil separator (2) for separating the received high temperature and high pressure vapor into high temperature and high pressure gaseous phase refrigerant and high temperature liquid phase lubricating oil; a dual phase heat exchanger (3) having one phase in communication with the siphon tank (1) for flowing condensed liquid phase refrigerant and another phase in communication with the oil separator (2) for flowing separated high temperature liquid phase lubricating oil, the one phase of the dual phase heat exchanger (3) flowing high temperature liquid phase lubricating oil being in communication with the outside of the dual phase heat exchanger (3) through a flow control valve (4).
2. The energy saving heat exchange system applied in the internal of a refrigeration machine according to claim 1, wherein: the siphon tank (1) is provided with a condensed refrigerant inlet pipe, a condensed refrigerant outlet pipe, a heat exchange outlet pipe and a heat exchange inlet pipe, the condensed refrigerant inlet pipe and the condensed refrigerant outlet pipe are respectively arranged on the upper part of the siphon tank (1), the condensed refrigerant inlet pipe is arranged at a higher level than the condensed refrigerant outlet pipe, the heat exchange inlet pipe is arranged at a higher level than the condensed refrigerant outlet pipe, and the heat exchange outlet pipe is arranged on the lower part or the bottom of the siphon tank (1); the oil separator (2) is provided with a high temperature and high pressure vapor inlet pipe, a high temperature liquid phase lubricating oil outlet pipe and a high temperature and high pressure gaseous phase refrigerant outlet pipe, the high temperature and high pressure vapor inlet pipe is arranged on the upper part of the oil separator (2), the high temperature liquid phase lubricating oil outlet pipe is arranged on the lower part of the oil separator (2), and the high temperature and high pressure gaseous phase refrigerant outlet pipe is arranged on the top of the oil separator (2), the high temperature and high pressure vapor inlet pipe is in communication with the compressor, and the high temperature and high pressure vapor discharged from the compressor enters the oil separator (2) through the high temperature and high pressure vapor inlet pipe and is separated into high temperature liquid phase lubricating oil and high temperature and high pressure gaseous phase refrigerant; the dual phase heat exchanger (3) comprises a first phase inlet pipe, a first phase outlet pipe, a second phase inlet pipe and a second phase outlet pipe, the first phase inlet pipe is in communication with the heat exchange outlet pipe of the siphon tank (1), the first phase outlet pipe is in communication with the heat exchange inlet pipe of the siphon tank (1), for flowing condensed liquid phase refrigerant in the siphon tank (1) in the first phase of the dual phase heat exchanger (3), the second phase inlet pipe is in communication with the high temperature liquid phase lubricating oil outlet pipe of the oil separator (2), and the second phase outlet pipe is in communication with the lubricating oil inlet of each machine for sending the heat exchanged lubricating oil into each machine.
3. The energy saving heat exchanger system for use in the interior of a refrigerator as claimed in claim 2, wherein, The high-temperature high-pressure gas-phase refrigerant outlet pipe of the oil separator (2) is communicated with the evaporative condenser through a return gas pipe, which is used to send the high-temperature high-pressure gas-phase refrigerant separated by the oil separator (2) into the evaporative condenser for condensation; the top of the siphon tank (1) is provided with a gas-phase balance pipe, and the gas-phase balance pipe of the siphon tank (1) is communicated with the return gas pipe through a stop valve, which is used to adjust the gas-phase pressure in the return gas pipe.
4. The energy saving heat exchanger system for use in the interior of a refrigerator as claimed in claim 2, wherein, A replaceable-core oil filter (5) is arranged at the high-temperature liquid-phase lubricating oil outlet pipe of the oil separator (2), which is used to gather impurities in the lubricating oil and separate the impurities from the lubricating oil circulation.