Fluorine pump compression refrigeration system

Abstract

The application provides a fluorine pump compression refrigeration system, which comprises a gas-liquid separator, a condenser, a compressor and a valve, wherein the gas-liquid separator comprises a shell, the shell has a containing cavity and a first outlet and a second outlet which are communicated with the containing cavity; the valve has a first valve inlet, a second valve inlet and a valve outlet, and the valve has a first communication state in which the first valve inlet is communicated with the valve outlet and the second valve inlet is disconnected with the valve outlet, and a second communication state in which the first valve inlet is disconnected with the valve outlet and the second valve inlet is communicated with the valve outlet; the first valve inlet is communicated with the first outlet, the inlet of the compressor is communicated with the second outlet, the outlet of the compressor is communicated with the inlet of the second valve inlet, and the valve outlet is communicated with the inlet of the condenser; the fluorine pump compression refrigeration system solves the problem that the lift of the fluorine pump is increased due to the fact that the flow resistance of the refrigerant gas is very large when the refrigerant gas passes through the one-way valve in the prior art.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of refrigeration technology, in particular to a fluorine pump compression refrigeration system. BACKGROUND

[0002] With the large application of 4G and the gradual popularization of 5G, the heat dissipation of various data processing equipment is becoming larger and larger, and the cooling capacity and energy saving requirement of air conditioning equipment in data center is becoming higher and higher. Using the outdoor natural cold source in the transition season and cold winter to cool the data center can greatly reduce the operation cost of the air conditioning equipment. Commonly, a fluorine pump air conditioner is used, in winter, the fluorine pump mode is started, and the operation of the compressor is stopped to realize heat pipe refrigeration operation by driving the coolant by the fluorine pump, which greatly reduces the operation cost of the equipment. The fluorine pump compression refrigeration system belongs to a composite system, and the fluorine pump heat pipe system and the compression refrigeration system share the evaporator and the condenser, as well as some shared coolant pipelines, system components and the like.

[0003] In the fluorine pump heat pipe mode of the fluorine pump compression refrigeration system, the coolant gas at the outlet of the evaporator may carry a large amount of unevaporated coolant liquid. The accumulation of these coolant liquids on the gas pipeline before entering the condenser is easy to cause liquid blocking problem, thereby blocking the flow of the coolant gas in some channels, and thus affecting the gas distribution uniformity and heat exchange efficiency of the condenser. The liquid blocking also affects the flow resistance of the fluorine pump heat pipe circulation, and is easy to damage the stable operation of the fluorine pump. Therefore, it is necessary to intercept the coolant liquid at the outlet of the evaporator to prevent it from returning to the condenser. However, the more the intercepted coolant liquid is, the less the coolant liquid remaining in the liquid storage tank is, which threatens the operation reliability of the fluorine pump.

[0004] Among them, the prior art provides a refrigeration system, a liquid level meter and a linkage controlled electric heater are arranged in the gas-liquid separator of the refrigeration system, the liquid level in the gas-liquid separator is detected by the liquid level meter, so as to determine the electric heating power of the electric heater, the liquid in the gas-liquid separator is heated and gasified to prevent excessive liquid in the gas-liquid separator. However, the refrigeration system has the problems of waste of electric energy, direct heating and gasification of the unevaporated coolant liquid, waste of refrigeration capacity, and reduction of the overall energy efficiency of the system.

[0005] In addition, a one-way valve bypassing the compressor is often used in the existing fluorine pump compression refrigeration system. In the fluorine pump mode, the compressor stops running, and the refrigerant gas returning from the outlet of the evaporator flows through the bypass compressor from the one-way valve and then returns to the condenser. The flow resistance of the refrigerant gas passing through the one-way valve is very large, which indirectly increases the lift of the fluorine pump, thereby reducing the energy efficiency ratio of the fluorine pump heat pipe circulation, which is not conducive to energy saving. SUMMARY

[0006] The main purpose of the present application is to provide a fluorine pump compression refrigeration system to solve the problem of high lift of the fluorine pump caused by the large flow resistance of the refrigerant gas through the one-way valve in the prior art.

[0007] To achieve the above-mentioned purpose, the present application provides a fluorine pump compression refrigeration system, comprising: a gas-liquid separator, comprising a shell, the shell having a containing cavity and a first outlet and a second outlet communicating with the containing cavity; a condenser; a compressor; a valve having a first valve inlet, a second valve inlet and a valve outlet, the valve having a first communication state that the first valve inlet communicates with the valve outlet and the second valve inlet is disconnected from the valve outlet, and a second communication state that the first valve inlet is disconnected from the valve outlet and the second valve inlet communicates with the valve outlet, the valve being switchably arranged between the first communication state and the second communication state; wherein the first valve inlet communicates with the first outlet, the inlet of the compressor communicates with the second outlet, the outlet of the compressor communicates with the inlet of the second valve inlet, and the valve outlet communicates with the inlet of the condenser.

[0008] Further, the fluorine pump compression refrigeration system further comprises: a first pipeline, a first end of the first pipeline communicating with the first outlet, and a second end of the first pipeline communicating with the first valve inlet; and / or a second pipeline, a first end of the second pipeline communicating with the containing cavity through the second outlet, and a second end of the second pipeline communicating with the inlet of the compressor; and / or a third pipeline, a first end of the third pipeline communicating with the outlet of the compressor, and a second end of the third pipeline communicating with the second valve inlet; and / or a fourth pipeline, a first end of the fourth pipeline communicating with the valve outlet, and a second end of the fourth pipeline communicating with the inlet of the condenser.

[0009] Further, the fluorine pump compression refrigeration system further comprises: a liquid storage part having a liquid storage cavity for storing refrigerant and a first liquid inlet and a second liquid inlet communicating with the liquid storage cavity, the second liquid inlet communicating with the outlet of the condenser; wherein the shell has a liquid outlet communicating with the containing cavity, the liquid outlet being selectively connected or disconnected with the first liquid inlet, so that the refrigerant in the containing cavity flows into the liquid storage cavity when the liquid outlet communicates with the first liquid inlet.

[0010] Further, the fluorine pump compression refrigeration system further comprises: a first connecting pipe, a first end of the first connecting pipe communicating with the containing cavity through the liquid outlet, and a second end of the first connecting pipe communicating with the first liquid inlet; and a first control valve arranged on the first connecting pipe to control the opening and closing of the first connecting pipe.

[0011] Further, the first control valve is a float ball valve, and the float ball valve is located in the containing cavity to control the opening and closing of the first connecting pipe according to the liquid level in the containing cavity.

[0012] Further, the first control valve is an electromagnetic valve, and the electromagnetic valve is located outside the gas-liquid separator.

[0013] Further, the fluorine pump compression refrigeration system further comprises: a first liquid level detection member arranged in the containing cavity, the first liquid level detection member being configured to detect a first limit liquid level; a second liquid level detection member arranged in the containing cavity, the second liquid level detection member being configured to detect a second limit liquid level, the second limit liquid level being higher than the first limit liquid level; and a controller, the first liquid level detection member, the second liquid level detection member and the electromagnetic valve being in communication connection with the controller, the second liquid level detection member being configured to send a first signal to the controller when the liquid level in the containing cavity rises to the second limit liquid level, the controller being configured to control the electromagnetic valve to open according to the first signal, the first liquid level detection member being configured to send a second signal to the controller when the liquid level in the containing cavity falls to the first limit liquid level, the controller being configured to control the electromagnetic valve to close according to the second signal.

[0014] Further, the fluorine pump compression refrigeration system further comprises a first check valve arranged on the first connecting pipe.

[0015] Further, the shell has an inlet communicating with the containing cavity, and the fluorine pump compression refrigeration system further comprises an evaporator, an outlet of the evaporator communicating with the inlet.

[0016] Further, the shell has an inlet communicating with the containing cavity, and the fluorine pump compression refrigeration system further comprises an evaporator, an outlet of the evaporator communicating with the inlet; a third check valve, an inlet of the third check valve communicating with an outlet of the liquid storage part, an outlet of the third check valve communicating with an inlet of the evaporator; a fluorine pump, the fluorine pump being arranged in parallel with the third check valve between the evaporator and the liquid storage part, an inlet of the fluorine pump communicating with the outlet of the liquid storage part, an outlet of the fluorine pump communicating with the inlet of the evaporator; and a throttling valve, an outlet of the throttling valve communicating with the inlet of the evaporator, an inlet of the throttling valve communicating with the outlet of the third check valve, an inlet of the throttling valve communicating with the outlet of the fluorine pump.

[0017] The fluorine pump compression refrigeration system comprises a gas-liquid separator, a condenser, a compressor and a valve. The shell has a containing cavity and first and second outlets connected with the containing cavity. The valve has first and second valve inlets and a valve outlet. When the fluorine pump compression refrigeration system is in a compression refrigeration mode, the valve is switched to a second communication state, the first valve inlet is disconnected from the valve outlet and the second valve inlet is connected with the valve outlet, and the refrigerant gas can only flow out from the second outlet, sequentially flow through the compressor, the second valve inlet and the valve outlet and then flow into the condenser. When the fluorine pump compression refrigeration system is in a fluorine pump refrigeration mode, the valve is switched to a first communication state, the first valve inlet is connected with the valve outlet and the second valve inlet is disconnected from the valve outlet, and the refrigerant gas can only flow out from the first outlet, sequentially flow through the first valve inlet and the valve outlet and then flow into the condenser. The valve can reduce the resistance of the refrigerant gas flowing through the check valve, thereby solving the problem that the fluorine pump head is increased due to the very large flow resistance of the refrigerant gas through the check valve in the prior art, and being conducive to improving the energy efficiency ratio of the fluorine pump heat pipe circulation. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the application and are incorporated herein by reference. The embodiments of the present application, together with its advantages, can best be understood by referring to the following description taken in conjunction with the accompanying drawings, in which:

[0019] Figure 1 Fig. 1 shows a schematic view of an embodiment one of the fluorine pump compression refrigeration system according to the present application;

[0020] Figure 2 Fig. 2 shows a schematic view of an embodiment two of the fluorine pump compression refrigeration system according to the present application.

[0021] In the above drawings, the following reference signs are used:

[0022] 10, liquid storage part; 11, liquid storage cavity; 12, first liquid inlet; 13, second liquid inlet; 20, gas-liquid separator; 21, shell; 211, containing cavity; 212, liquid outlet; 213, first outlet; 214, second outlet; 24, inlet; 30, first connecting pipe; 40, first control valve; 41, second floating ball; 50, first liquid level detection member; 51, first clasp; 60, second liquid level detection member; 61, second clasp; 70, first check valve; 80, compressor; 90, condenser; 110, valve; 111, first valve inlet; 112, second valve inlet; 113, valve outlet; 114, piston; 115, spring; 120, evaporator; 130, third check valve; 140, fluorine pump; 150, throttling valve; 160, first pipeline; 170, second pipeline; 180, third pipeline; 190, fourth pipeline. DETAILED DESCRIPTION

[0023] It should be noted that the embodiments and features of the embodiments in the present application can be combined with each other in the case of no conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs.

[0025] It should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a presence of the features, steps, operations, devices, components and / or combinations thereof.

[0026] The present application provides a fluorine pump compression refrigeration system, please refer to Figure 1 and Figure 2 , comprising: a gas-liquid separator 20, comprising a shell 21, the shell 21 has a containing cavity 211 and a first outlet 213 and a second outlet 214 which are communicated with the containing cavity 211; a condenser 90; a compressor 80; a valve 110, having a first valve inlet 111, a second valve inlet 112 and a valve outlet 113, the valve 110 has a first communication state that the first valve inlet 111 is communicated with the valve outlet 113 and the second valve inlet 112 is disconnected with the valve outlet 113, and a second communication state that the first valve inlet 111 is disconnected with the valve outlet 113 and the second valve inlet 112 is communicated with the valve outlet 113, the valve 110 is switchably arranged between the first communication state and the second communication state; wherein the first valve inlet 111 is communicated with the first outlet 213, the inlet of the compressor 80 is communicated with the second outlet 214, the outlet of the compressor 80 is communicated with the inlet of the second valve inlet 112, and the valve outlet 113 is communicated with the inlet of the condenser 90.

[0027] The fluorine pump compression refrigeration system of the application comprises a gas-liquid separator 20, a condenser 90, a compressor 80 and a valve 110, the shell 21 has a containing cavity 211 and a first outlet 213 and a second outlet 214 in communication with the containing cavity 211, the valve 110 has a first valve inlet 111, a second valve inlet 112 and a valve outlet 113. When the fluorine pump compression refrigeration system is in a compression refrigeration mode, the valve 110 is switched to a second communication state, the first valve inlet 111 is disconnected from the valve outlet 113 and the second valve inlet 112 is in communication with the valve outlet 113, and the refrigerant gas can only flow out from the second outlet 214, sequentially flow through the compressor 80, the second valve inlet 112 and the valve outlet 113 and then flow into the condenser 90; when the fluorine pump compression refrigeration system is in a fluorine pump refrigeration mode, the valve is switched to a first communication state, the first valve inlet 111 is in communication with the valve outlet 113 and the second valve inlet 112 is disconnected from the valve outlet 113, and the refrigerant gas can only flow out from the first outlet 213, sequentially flow through the first valve inlet 111 and the valve outlet 113 and then flow into the condenser 90, and the valve 110 can reduce the resistance suffered by the refrigerant gas when flowing through the one-way valve, thereby solving the problem that the fluorine pump head is increased due to the very large flow resistance of the refrigerant gas when passing through the one-way valve in the prior art, and being conducive to improving the energy efficiency ratio of the fluorine pump heat pipe circulation.

[0028] In specific implementation, the valve 110 further comprises a spring 115 and a piston 114, the first end of the piston 114 is arranged at the second valve inlet 112, the second end of the piston 114 is connected with the first end of the spring 115, and the second end of the spring 115 is arranged at the first valve inlet 111. When the fluorine pump compression refrigeration system is in a compression refrigeration mode, the compressor 80 operates, the pressure at the second valve inlet 112 is greater than the pressure at the first valve inlet 111, the piston 114 moves towards the first valve inlet 111 against the elastic force of the spring 115 until the first valve inlet 111 is disconnected from the valve outlet 113 and the second valve inlet 112 is in communication with the valve outlet 113, i.e. the valve 110 is switched to a second communication state, and the refrigerant gas can only flow out from the second outlet 214, sequentially flow through the compressor 80, the second valve inlet 112 and the valve outlet 113 and then flow into the condenser 90; when the fluorine pump compression refrigeration system is in a fluorine pump refrigeration mode, the compressor 80 stops operating, the pressure difference between the second valve inlet 112 and the first valve inlet 111 gradually decreases, the spring resets, and the piston 114 moves towards the second valve inlet 112 under the elastic force of the spring 115 until the first valve inlet 111 is in communication with the valve outlet 113 and the second valve inlet 112 is disconnected from the valve outlet 113, i.e. the valve is switched to a first communication state, and the refrigerant gas can only flow out from the first outlet 213, sequentially flow through the first valve inlet 111 and the valve outlet 113 and then flow into the condenser 90.

[0029] Specifically, the fluorine pump compression refrigeration system further comprises: a first pipeline 160, a first end of the first pipeline 160 being in communication with the first outlet 213, and a second end of the first pipeline 160 being in communication with the first valve inlet 111; and / or, a second pipeline 170, a first end of the second pipeline 170 being in communication with the containing cavity 211 through the second outlet 214, and a second end of the second pipeline 170 being in communication with the inlet of the compressor 80; and / or, a third pipeline 180, a first end of the third pipeline 180 being in communication with the outlet of the compressor 80, and a second end of the third pipeline 180 being in communication with the second valve inlet 112; and / or, a fourth pipeline 190, a first end of the fourth pipeline 190 being in communication with the valve outlet 113, and a second end of the fourth pipeline 190 being in communication with the inlet of the condenser 90.

[0030] In specific implementation, when the fluorine pump compression refrigeration system is in the compression refrigeration mode, the refrigerant gas can only flow from the second outlet 214 into the second pipeline 170, and then sequentially flow through the compressor 80, the third pipeline 180, the second valve inlet 112, the valve outlet 113, and the fourth pipeline 190 to flow into the condenser 90; when the fluorine pump compression refrigeration system is in the fluorine pump refrigeration mode, the refrigerant gas flows from the first outlet 213 into the first pipeline 160, and then sequentially flows through the first valve inlet 111, the valve outlet 113, and the fourth pipeline 190 to flow into the condenser 90.

[0031] In specific implementation, the first valve inlet 111 cannot be jointly connected to the inlet of the compressor 80 at the second outlet 214, mainly because: the gas-liquid separator 20 further comprises a gas outlet pipe, the gas outlet pipe being in communication with the second outlet 214, the bottom of the gas outlet pipe being provided with an oil return hole, and the gas outlet pipe being a U-shaped pipe. Once there is liquid accumulation inside the gas-liquid separator 20, the liquid level of the liquid accumulation will overflow the oil return hole at the bottom of the U-shaped pipe, and then the refrigerant liquid and / or the lubricating oil will enter the inside of the U-shaped pipe to form a liquid blockage. The refrigerant gas passing through the U-shaped pipe in the fluorine pump refrigeration mode will be blocked by the liquid, which will form the technical problems or defects described in the background art. Therefore, the first valve inlet 111 is in communication with the first outlet 213, and the inlet of the compressor 80 is in communication with the second outlet 214.

[0032] Specifically, the fluorine pump compression refrigeration system further comprises: a liquid storage part 10, having a liquid storage cavity 11 for storing refrigerant, and a first liquid inlet 12 and a second liquid inlet 13 in communication with the liquid storage cavity 11, the second liquid inlet 13 being in communication with the outlet of the condenser 90; wherein the shell 21 has a liquid outlet 212 in communication with the containing cavity 211, the liquid outlet 212 being selectively in communication or disconnected with the first liquid inlet 12, so that when the liquid outlet 212 is in communication with the first liquid inlet 12, the refrigerant in the containing cavity 211 flows into the liquid storage cavity 11.

[0033] In specific implementation, when the liquid outlet 212 is in communication with the first liquid inlet 12, the refrigerant liquid in the containing cavity 211 flows back into the liquid storage cavity 11 through the liquid outlet 212 and the first liquid inlet 12 in sequence, so that the refrigerant liquid in the liquid storage cavity 11 is prevented from gradually decreasing in the fluorine pump compression refrigeration system, thereby affecting the operation of the fluorine pump.

[0034] Specifically, the fluorine pump compression refrigeration system further comprises: a first connecting pipe 30, a first end of the first connecting pipe 30 being in communication with the containing cavity 211 through the liquid outlet 212, and a second end of the first connecting pipe 30 being in communication with the first liquid inlet 12; and a first control valve 40, which is arranged on the first connecting pipe 30 to control the opening and closing of the first connecting pipe 30.

[0035] In specific implementation, when the first control valve 40 is opened, the first connecting pipe 30 is in communication, and the refrigerant liquid in the containing cavity 211 flows back into the liquid storage cavity 11 through the liquid outlet 212, the first connecting pipe 30 and the first liquid inlet 12 in sequence, so that the refrigerant liquid in the liquid storage cavity 11 is prevented from gradually decreasing in the fluorine pump compression refrigeration system, thereby affecting the operation of the fluorine pump.

[0036] Optionally, the first control valve 40 is a float ball valve, which is arranged in the containing cavity 211 to control the opening and closing of the first connecting pipe 30 according to the liquid level in the containing cavity 211; or the first control valve 40 is an electromagnetic valve, which is arranged outside the gas-liquid separator 20. In this way, the controller can control the electromagnetic valve to accurately control the opening and closing of the first connecting pipe 30.

[0037] In specific implementation, as shown in Figure 1 when the first control valve 40 is a float ball valve, the second float ball 41 rises and falls with the liquid level of the refrigerant liquid, and the second float ball 41 drives the float ball valve to open or close. When the liquid level rises to a predetermined high liquid level, the second float ball 41 drives the float ball valve to open, and the first connecting pipe 30 is in communication, so that the refrigerant liquid in the containing cavity 211 can be timely returned to the liquid storage cavity 10, thereby preventing the refrigerant liquid in the liquid storage cavity 10 from being too little to affect the operation of the fluorine pump.

[0038] In specific implementation, as shown in Figure 2As shown in the drawings, when the first control valve 40 is an electromagnetic valve, the fluorine pump compression refrigeration system further comprises: a first liquid level detection member 50 arranged in the containing cavity 211, the first liquid level detection member 50 being used for detecting a first limit liquid level; a second liquid level detection member 60 arranged in the containing cavity 211, the second liquid level detection member 60 being used for detecting a second limit liquid level, the second limit liquid level being higher than the first limit liquid level; a controller, the first liquid level detection member 50, the second liquid level detection member 60 and the electromagnetic valve being in communication connection with the controller, when the second liquid level detection member 60 detects that the liquid level in the containing cavity 211 rises to the second limit liquid level, a first signal is sent to the controller, and the controller controls the electromagnetic valve to open according to the first signal; when the first liquid level detection member 50 detects that the liquid level in the containing cavity 211 falls to the first limit liquid level, a second signal is sent to the controller, and the controller controls the electromagnetic valve to close according to the second signal.

[0039] In specific implementation, as shown in the drawings, Figure 2 As shown in the drawings, when the first control valve 40 is an electromagnetic valve, when the second liquid level detection member 60 detects that the liquid level in the containing cavity 211 rises to the second limit liquid level, the controller controls the electromagnetic valve to open, and the first connecting pipe 30 is opened, so that the refrigerant liquid in the containing cavity 211 returns to the liquid storage part 10 in time, avoiding that the refrigerant liquid in the liquid storage part 10 is too little to affect the operation of the fluorine pump; when the first liquid level detection member 50 detects that the liquid level in the containing cavity 211 falls to the first limit liquid level, the controller controls the electromagnetic valve to close, and the first connecting pipe 30 is disconnected, at this time, the refrigerant liquid in the containing cavity 211 cannot return to the liquid storage part 10, so that the floating oil (compressor lubricating oil) in the upper layer of the refrigerant liquid in the containing cavity 211 can be left in the gas-liquid separator 20, preventing the lubricating oil from entering the fluorine pump compression refrigeration system to reduce the heat exchange efficiency.

[0040] In specific implementation, as shown in the drawings, Figure 2As shown, when the first control valve 40 is an electromagnetic valve, the first liquid level detection member 50 and the second liquid level detection member 60 are both first floating balls, and the first liquid level detection member 50 is arranged with first snap rings 51 at the upper and lower positions thereof, and can only move up and down between the two first snap rings 51, and the second liquid level detection member 60 is arranged with second snap rings 61 at the upper and lower positions thereof, and can only move up and down between the two second snap rings 61. That is, the refrigerant liquid level drops to drive the first liquid level detection member 50 to drop, and the first liquid level detection member 50 cannot move after reaching the first snap ring 51 below it, the first liquid level detection member 50 detects that the liquid level in the containing cavity 211 drops to the first limit liquid level, and sends a second signal to the controller, and the controller controls the electromagnetic valve to close according to the second signal, and the first connecting pipe 30 is disconnected; the refrigerant liquid level rises to drive the second liquid level detection member 60 to rise to the second snap ring 61 above it, which cannot move, and at this time the second liquid level detection member 60 detects that the liquid level in the containing cavity 211 rises to the second limit liquid level, and sends a first signal to the controller, and the controller controls the electromagnetic valve to open according to the first signal, and the first connecting pipe 30 is opened.

[0041] Specifically, the fluorine pump compression refrigeration system further comprises a first check valve 70, and the first check valve 70 is arranged on the first connecting pipe 30.

[0042] In specific implementation, the flow direction of the first check valve 70 only allows the refrigerant liquid to flow from the gas-liquid separator 20 to the liquid storage part 10, avoiding the refrigerant in the liquid storage part 10 from directly returning to the gas-liquid separator from the first connecting pipe 30, so as to reduce the refrigerant liquid in the liquid storage part 10 and affect the fluorine pump operation.

[0043] Specifically, the shell 21 has an inlet 24 in communication with the containing cavity 211; and the fluorine pump compression refrigeration system further comprises an evaporator 120, and an outlet of the evaporator 120 is in communication with the inlet 24.

[0044] In specific implementation, the shell 21 has an inlet 24 in communication with the containing cavity 211; and the fluorine pump compression refrigeration system further comprises an evaporator 120, and an outlet of the evaporator 120 is in communication with the inlet 24; a third check valve 130, an inlet of the third check valve 130 is in communication with an outlet of the liquid storage part 10, and an outlet of the third check valve 130 is in communication with an inlet of the evaporator 120; a fluorine pump 140, the fluorine pump 140 is arranged in parallel with the third check valve 130 between the evaporator 120 and the liquid storage part 10, an inlet of the fluorine pump 140 is in communication with the outlet of the liquid storage part 10, and an outlet of the fluorine pump 140 is in communication with the inlet of the evaporator 120; and a throttling valve 150, an outlet of the throttling valve 150 is in communication with the inlet of the evaporator 120, an inlet of the throttling valve 150 is in communication with the outlet of the third check valve 130, and an inlet of the throttling valve 150 is in communication with the outlet of the fluorine pump 140.

[0045] Specifically, the fluorine pump compression refrigeration system further comprises a throttling valve 150, which is arranged between the inlet of the evaporator and the outlet of the third one-way valve 130, and also arranged between the inlet of the evaporator 120 and the outlet of the fluorine pump 140, for throttling the refrigerant liquid entering the evaporator 120.

[0046] In specific implementation, the refrigerant gas and the un-evaporated refrigerant liquid at the outlet of the evaporator 120 enter the gas-liquid separator 20 from the inlet 24, are separated and stored in the gas-liquid separator 20, the refrigerant liquid returns to the liquid storage part, and the refrigerant gas enters the condenser, so as to avoid the refrigerant liquid at the outlet of the evaporator 120 affecting the reliable operation of the condenser 90.

[0047] In specific implementation, as shown in Figure 1 When the fluorine pump compression refrigeration system is in the compression refrigeration mode, the fluorine pump 140 stops running, the pressure at the outlet of the third one-way valve 130 is lower than the pressure at the inlet of the third one-way valve 130, the third one-way valve 130 is turned on, the refrigerant liquid flows out of the liquid storage part 10, flows through the third one-way valve 130 and the throttling valve 150, and then flows into the evaporator 120; when the fluorine pump compression refrigeration system is in the fluorine pump refrigeration mode, the fluorine pump 140 starts running, the pressure at the inlet of the third one-way valve 130 is lower than the pressure at the outlet of the third one-way valve 130, the third one-way valve 130 is in the reverse high-pressure cut-off closed state, the refrigerant liquid flows out of the liquid storage part 10, flows through the fluorine pump 140 and the throttling valve 150, and then enters the evaporator 120.

[0048] Specifically, the first liquid inlet 12 is located at the top of the liquid storage part 10, which can avoid the first liquid inlet 12 being immersed in the refrigerant inside the liquid storage part 10, being affected by the gravity of the refrigerant liquid inside the liquid storage part 10, and causing the refrigerant liquid inside the gas-liquid separator 20 to be not easy to enter the liquid storage part 10, thereby affecting the reflux efficiency of the refrigerant liquid.

[0049] Specifically, the liquid outlet 212 is located at the same height as the first liquid inlet 12, or the liquid outlet 212 is arranged higher than the first liquid inlet 12, which makes the refrigerant liquid in the gas-liquid separator 20 more smoothly enter the liquid storage part 10.

[0050] Embodiment One

[0051] In this embodiment, as shown in Figure 1As shown, the first control valve 40 is a float ball valve, which is located in the containing cavity 211 to control the opening and closing of the first connecting pipe 30 according to the liquid level in the containing cavity 211; the fluorine pump compression refrigeration system further comprises a valve 110, which has a first valve inlet 111, a second valve inlet 112 and a valve outlet 113, the valve 110 has a first communication state in which the first valve inlet 111 is in communication with the valve outlet 113 and the second valve inlet 112 is disconnected from the valve outlet 113, and a second communication state in which the first valve inlet 111 is disconnected from the valve outlet 113 and the second valve inlet 112 is in communication with the valve outlet 113, and the valve 110 is switchably arranged between the first communication state and the second communication state; wherein the first valve inlet 111 is in communication with the first outlet 213, the inlet of the compressor 80 is in communication with the second outlet 214, the outlet of the compressor 80 is in communication with the inlet of the second valve inlet 112, and the valve outlet 113 is in communication with the inlet of the condenser 90.

[0052] In particular implementation, as shown in Figure 1 The fluorine pump compression refrigeration system is sequentially connected by the compressor 80, the valve 110, the condenser 90, the liquid storage part 10, the fluorine pump 140, the throttling valve 150, the evaporator 120 and the gas-liquid separator 20, and the refrigerant circulation is: compressor 80→second valve inlet 112→valve outlet 113→condenser 90→liquid storage part 10→third one-way valve 130→throttling valve 150→evaporator 120→gas-liquid separator 20→compressor 80 in the compression refrigeration mode; and the refrigerant circulation is: fluorine pump 140→throttling valve 150→evaporator 120→gas-liquid separator 20→first valve inlet 111→valve outlet 113→condenser 90→liquid storage part 10→fluorine pump 140 in the fluorine pump refrigeration mode.

[0053] Example Two

[0054] In this embodiment, as shown in Figure 2As shown, the first control valve 40 is an electromagnetic valve, which is located outside the gas-liquid separator 20 and arranged on the first connecting pipe 30 to control the opening and closing of the first connecting pipe 30; the fluorine pump compression refrigeration system further comprises: a first liquid level detection member 50 arranged in the containing cavity 211, the first liquid level detection member 50 being used for detecting a first limit liquid level; a second liquid level detection member 60 arranged in the containing cavity 211, the second liquid level detection member 60 being used for detecting a second limit liquid level, the second limit liquid level being higher than the first limit liquid level; a controller, the first liquid level detection member 50, the second liquid level detection member 60 and the electromagnetic valve being in communication connection with the controller, the second liquid level detection member 60 sending a first signal to the controller when detecting that the liquid level in the containing cavity 211 rises to the second limit liquid level, the controller controlling the electromagnetic valve to open according to the first signal, the first liquid level detection member 50 sending a second signal to the controller when detecting that the liquid level in the containing cavity 211 falls to the first limit liquid level, the controller controlling the electromagnetic valve to close according to the second signal; the fluorine pump compression refrigeration system further comprises a valve 110, the valve 110 having a first valve inlet 111, a second valve inlet 112 and a valve outlet 113, the valve 110 having a first communication state in which the first valve inlet 111 is in communication with the valve outlet 113 and the second valve inlet 112 is disconnected from the valve outlet 113, and a second communication state in which the first valve inlet 111 is disconnected from the valve outlet 113 and the second valve inlet 112 is in communication with the valve outlet 113, the valve 110 being switchably arranged between the first communication state and the second communication state; wherein the first valve inlet 111 is in communication with the first outlet 213, the inlet of the compressor 80 is in communication with the second outlet 214, the outlet of the compressor 80 is in communication with the inlet of the second valve inlet 112, and the valve outlet 113 is in communication with the inlet of the condenser 90.

[0055] In particular implementation, as shown in the accompanying drawings, Figure 2 The fluorine pump compression refrigeration system is sequentially connected by the compressor 80, the valve 110, the condenser 90, the liquid storage part 10, the fluorine pump 140, the throttling valve 150, the evaporator 120 and the gas-liquid separator 20, and the refrigerant circulation is: the compressor 80→the second valve inlet 112→the valve outlet 113→the condenser 90→the liquid storage part 10→the third one-way valve 130→the throttling valve 150→the evaporator 120→the gas-liquid separator 20→the compressor 80 in the compression refrigeration mode; and the refrigerant circulation is: the fluorine pump 140→the throttling valve 150→the evaporator 120→the gas-liquid separator 20→the first valve inlet 111→the valve outlet 113→the condenser 90→the liquid storage part 10→the fluorine pump 140 in the fluorine pump refrigeration mode.

[0056] From the above description, it can be seen that the above-mentioned embodiments of the present application achieve the following technical effects:

[0057] The fluorine pump compression refrigeration system of the present application realizes gas-liquid separation of refrigerant through the gas-liquid separator 20; through setting the first one-way valve 70 on the first connecting pipe 30, the reverse leakage of refrigerant from the liquid storage part 10 to the gas-liquid separator is prevented when the fluorine pump compression refrigeration system is in the compression refrigeration mode; the liquid level inside the gas-liquid separator 20 is fed back through the first liquid level detection member 50 and the second liquid level detection member 60, thereby indirectly controlling the on-off of the electromagnetic valve, ensuring that the refrigerant liquid trapped in the gas-liquid separator 20 can return to the liquid storage part 10 smoothly, thereby preventing the refrigerant liquid from returning to the condenser 90 from the evaporator 120, and further overcoming the liquid blockage phenomenon on the gas pipeline, ensuring the performance of the condenser 90 while ensuring that there is enough refrigerant liquid in the liquid storage part 10 for the safe operation of the fluorine pump 140, solving the problem of excessive resistance of refrigerant gas flowing through the one-way valve, and at the same time solving the problem of refrigerant liquid trapping and transfer at the outlet of the evaporator in the fluorine pump heat pipe mode.

[0058] The fluorine pump compression refrigeration system of the present application includes a gas-liquid separator 20, a condenser 90, a compressor 80 and a valve 110, the housing 21 has a containing cavity 211 and a first outlet 213 and a second outlet 214 communicating with the containing cavity 211, the valve 110 has a first valve inlet 111, a second valve inlet 112 and a valve outlet 113. When the fluorine pump compression refrigeration system is in the compression refrigeration mode, the valve 110 is switched to the second communication state, the first valve inlet 111 is disconnected from the valve outlet 113 and the second valve inlet 112 is connected to the valve outlet 113, and the refrigerant gas can only flow out from the second outlet 214, and then flow through the compressor 80, the second valve inlet 112 and the valve outlet 113 in sequence before flowing into the condenser 90; when the fluorine pump compression refrigeration system is in the fluorine pump refrigeration mode, the valve is switched to the first communication state, the first valve inlet 111 is connected to the valve outlet 113 and the second valve inlet 112 is disconnected from the valve outlet 113, and the refrigerant gas can only flow out from the first outlet 213 and then flow through the first valve inlet 111 and the valve outlet 113 in sequence before flowing into the condenser 90, the valve 110 can reduce the resistance of the refrigerant gas flowing through the one-way valve, thereby solving the problem of the fluorine pump head being increased due to the very large flow resistance of the refrigerant gas passing through the one-way valve in the prior art, which is beneficial to improving the energy efficiency ratio of the fluorine pump heat pipe cycle.

[0059] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application cover modifications and variations of this application provided they come within the scope of the appended claims and their equivalents.

[0060] Spatially relative terms, such as "beneath", "below", "lower", "above", "upper" and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device described is turned over in use, a downwardly-facing surface can then be oriented upwardly, and vice versa. Thus, the example term "below" can encompass both an orientation of below and above. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. The terms "first", "second", "third", etc., do not necessarily indicate any ordinal, chronological or other sequence unless expressly so defined by the relative terms or context.

[0061] The above description is embodied in the form of preferred embodiments only and is not intended to limit the present application. The present application can be variously changed and modified without departing from the spirit and scope of the present application. Accordingly, any and all modifications, variations or equivalent arrangements which do not depart from the spirit and scope of the present application should be considered to be within the scope of the present application.

Claims

1. A fluorine pump compression refrigeration system characterized by, The system comprises: a gas-liquid separator (20) comprising a housing (21) having a containing cavity (211) and a first outlet (213) and a second outlet (214) communicating with the containing cavity (211); a condenser (90); a compressor (80); a valve (110) having a first valve inlet (111), a second valve inlet (112) and a valve outlet (113), the valve (110) having a first communication state in which the first valve inlet (111) communicates with the valve outlet (113) and the second valve inlet (112) is disconnected from the valve outlet (113), and a second communication state in which the first valve inlet (111) is disconnected from the valve outlet (113) and the second valve inlet (112) communicates with the valve outlet (113), the valve (110) being switchably arranged between the first communication state and the second communication state; wherein the first valve inlet (111) communicates with the first outlet (213), an inlet of the compressor (80) communicates with the second outlet (214), an outlet of the compressor (80) communicates with an inlet of the second valve inlet (112), and the valve outlet (113) communicates with an inlet of the condenser (90); the fluorine pump compression refrigeration system further comprises a liquid storage portion (10) having a liquid storage cavity (11) for storing refrigerant and a first liquid inlet (12) communicating with the liquid storage cavity (11); wherein the housing (21) has a liquid outlet (212) communicating with the containing cavity (211), the liquid outlet (212) being selectively connected or disconnected with the first liquid inlet (12) to cause the refrigerant in the containing cavity (211) to flow into the liquid storage cavity (11) when the liquid outlet (212) communicates with the first liquid inlet (12); the fluorine pump compression refrigeration system further comprises a first connecting pipe (30), a first end of the first connecting pipe (30) communicating with the containing cavity (211) through the liquid outlet (212), and a second end of the first connecting pipe (30) communicating with the first liquid inlet (12); a first control valve (40) arranged on the first connecting pipe (30) to control the opening and closing of the first connecting pipe (30). The fluorine pump compression refrigeration system further comprises: a first liquid level detection member (50) arranged in the accommodating cavity (211), the first liquid level detection member (50) being used for detecting a first limit liquid level; a second liquid level detection member (60) arranged in the accommodating cavity (211), the second liquid level detection member (60) being used for detecting a second limit liquid level, the second limit liquid level being higher than the first limit liquid level; a controller, the first liquid level detection member (50), the second liquid level detection member (60) and the first control valve (40) being in communication connection with the controller, when the second liquid level detection member (60) detects that the liquid level in the accommodating cavity (211) rises to the second limit liquid level, a first signal is sent to the controller, the controller controls the first control valve (40) to open according to the first signal, when the first liquid level detection member (50) detects that the liquid level in the accommodating cavity (211) falls to the first limit liquid level, a second signal is sent to the controller, the controller controls the first control valve (40) to close according to the second signal; The shell (21) has an inlet (24) in communication with the accommodating cavity (211); The fluorine pump compression refrigeration system further comprises: an evaporator (120), an outlet of the evaporator (120) being in communication with the inlet (24); a third one-way valve (130), an inlet of the third one-way valve (130) being in communication with an outlet of the liquid storage part (10), an outlet of the third one-way valve (130) being in communication with an inlet of the evaporator (120); a fluorine pump (140), the fluorine pump (140) being arranged in parallel with the third one-way valve (130) between the evaporator (120) and the liquid storage part (10), an inlet of the fluorine pump (140) being in communication with the outlet of the liquid storage part (10), an outlet of the fluorine pump (140) being in communication with the inlet of the evaporator (120).

2. The fluorine pump compression refrigeration system of claim 1, wherein, The fluorine pump compression refrigeration system further comprises: a first pipeline (160), a first end of the first pipeline (160) being in communication with the first outlet (213), a second end of the first pipeline (160) being in communication with the first valve inlet (111); and / or, a second pipeline (170), a first end of the second pipeline (170) being in communication with the accommodating cavity (211) through the second outlet (214), a second end of the second pipeline (170) being in communication with an inlet of the compressor (80); and / or, a third pipeline (180), a first end of the third pipeline (180) being in communication with an outlet of the compressor (80), a second end of the third pipeline (180) being in communication with the second valve inlet (112); and / or, a fourth pipeline (190), a first end of the fourth pipeline (190) being in communication with the valve outlet (113), a second end of the fourth pipeline (190) being in communication with an inlet of the condenser (90).

3. The fluorine pump compression refrigeration system according to claim 1, wherein The liquid storage part (10) further has a second liquid inlet (13) communicated with the liquid storage cavity (11), and the second liquid inlet (13) is communicated with the outlet of the condenser (90).

4. The fluorine pump compression refrigeration system of claim 1, wherein, The first control valve (40) is a float ball valve, which is located in the containing cavity (211) to control the opening and closing of the first connecting pipe (30) according to the liquid level in the containing cavity (211).

5. The fluorine pump compression refrigeration system of claim 1, wherein, The first control valve (40) is an electromagnetic valve, which is located outside the gas-liquid separator (20).

6. The fluorine pump compression refrigeration system according to claim 4 or 5, characterized in that, The fluorine pump compression refrigeration system further comprises a first one-way valve (70) arranged on the first connecting pipe (30).

7. The fluorine pump compression refrigeration system according to claim 3, characterized in that, a throttling valve (150), an outlet of the throttling valve (150) being communicated with an inlet of the evaporator (120), an inlet of the throttling valve (150) being communicated with an outlet of the third one-way valve (130), and the inlet of the throttling valve (150) being communicated with an outlet of the fluorine pump (140).

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