A siphon type liquid storage device and a heat pump system containing the liquid storage device

Abstract

The present invention provides a siphon type liquid reservoir and a heat pump system containing the liquid reservoir, relating to the technical field of liquid reservoirs for heat pump systems, including an equipment frame and a liquid reservoir pipe group. A plurality of equipment frame cross beams are installed between the equipment frames, the liquid reservoir pipe group is installed on the equipment frame cross beams, a liquid cooler support is fixedly installed at the upper end of the liquid reservoir pipe group, and a heat pump liquid cooler is fixedly installed at the upper end of the liquid cooler support; by arranging the improved liquid reservoir pipe group in the whole heat pump system, the present invention can adjust the amount of liquid refrigerant in the liquid reservoir during the operation of the unit, improve the reliability and capacity of the unit, and improve the reliability of the unit: when the unit shuts down, the vacuum pumping mode is run, and the pressure difference between the liquid inlet pipe and the liquid outlet pipe is not enough to suck the liquid from the siphon port drain port to a sufficient height for discharging, which will not impact the downstream expansion valve, and no impurities will enter the expansion valve part, thus having no impact on the next startup.

Description

Technical Field

[0001] The present invention relates to the technical field of heat pump system liquid receivers, and specifically to a siphon liquid receiver and a heat pump system containing the liquid receiver. Background Art

[0002] The liquid outlet pipe of a conventional liquid receiver is a straight pipe leading to the upper part of the tank body. The liquid discharge hole is on the liquid outlet pipe at the bottom of the liquid storage tank, and the exhaust hole is at the top of the liquid outlet pipe. With this structural design, the liquid discharge hole is small, and the pressure loss is very large when the flow rate is large, resulting in the attenuation of the unit capacity. Moreover, it is not conducive to exhaust. A small amount of gaseous refrigerant enters the liquid outlet pipe, affecting the operation of the expansion valve downstream of the liquid outlet pipe and the stable operation of the refrigeration system. When the system is operating under vacuum (the expansion valve downstream of the liquid outlet pipe is gradually closed to the closed state), the pressure difference between the liquid inlet pipe and the liquid outlet pipe becomes smaller, and the impurities existing in the tank body are deposited at the bottom of the tank body. Under the action of a small pressure difference, the impurities continue to enter the liquid outlet pipe through the liquid discharge hole and are deposited on the expansion valve downstream of the liquid outlet pipe, causing the expansion valve to fail to open normally during the next startup and resulting in the unit malfunctioning and shutting down. Summary of the Invention

[0003] In view of the deficiencies of the prior art, the present invention provides a siphon liquid receiver and a heat pump system containing the liquid receiver, solving the problems raised in the background art.

[0004] To achieve the above objectives, the present invention is realized through the following technical solutions: A siphon liquid receiver includes an equipment frame and a liquid receiver pipe group. A number of equipment frame crossbeams are installed between the equipment frames. The liquid receiver pipe group is installed on the equipment frame crossbeams. A liquid cooler support is fixedly installed at the upper end of the liquid receiver pipe group, and a heat pump liquid cooler is fixedly installed at the upper end of the liquid cooler support;

[0005] An evaporator support is also fixedly installed on the equipment frame crossbeams, and a heat pump evaporator is fixedly installed at the upper end of the evaporator support.

[0006] Preferably, an oil tank installation support is fixedly installed on the equipment frame crossbeams, and a heat pump oil tank is fixedly installed at the upper end of the oil tank installation support;

[0007] An oil separator is fixedly installed at the upper end of the equipment frame crossbeams. A compressor support is fixedly installed at the upper end of the oil separator, and a heat pump compressor is fixedly installed at the upper end of the compressor support;

[0008] An equipment control cabinet is also fixedly installed at the upper end of the equipment frame crossbeams.

[0009] Preferably, the liquid receiver pipe group includes: a liquid receiver housing, a liquid receiver base support, a liquid receiver liquid inlet pipe, an inlet pipe connection throat, an inlet liquid pressure reducing and filtering assembly, a filtering assembly limiting frame, a first baffle, and a siphon liquid discharge pipe group;

[0010] A liquid storage container housing has a liquid storage container inlet pipe fixedly installed at its upper end, a liquid storage container base bracket fixedly installed at its lower end. The lower end of the liquid storage container inlet pipe is fixedly connected to an inlet pipe connecting throat, and a liquid inlet pressure reducing and filtering assembly is provided at the lower end of the inlet pipe connecting throat.

[0011] A first baffle is fixedly installed on the inner wall of the liquid storage container housing. Two filtering assembly limiting frames are fixedly installed on one side surface of the first baffle. A siphon drainage pipe group is fixedly installed at the lower end inside the liquid storage container housing.

[0012] Preferably, a second baffle is fixedly installed on the inner wall of the liquid storage container housing. A baffle liquid passing block is integrally provided at the upper end of the second baffle. A filtrate net is fixedly installed on the side surface of the baffle liquid passing block. A filter net isolation strip is fixedly installed at the upper end of the filtrate net, and a splash-proof baffle is fixedly installed at the upper end of the filter net isolation strip.

[0013] Preferably, the liquid inlet pressure reducing and filtering assembly includes: a filtering assembly housing, a filtering assembly top cover, a filtrate ring groove, a filtering liquid inlet pipe, a filtrate outlet, a filtering liquid inlet, a filtering diversion nozzle, a flocculent liquid scale filtering member;

[0014] The upper end of the filtering assembly housing is fixedly installed with a filtering assembly top cover. A filtering liquid inlet pipe is fixedly installed in the middle of the filtering assembly top cover. A filtrate ring groove is provided on the outer circumference of the filtering liquid inlet pipe and on the upper surface of the filtering assembly top cover. The lower end of the filtering liquid inlet pipe is provided with a filtering liquid inlet. A number of filtering diversion nozzles are provided at the lower end of the filtering liquid inlet. A flocculent liquid scale filtering member is provided at the upper end of each filtering diversion nozzle;

[0015] The upper end of each filtering diversion nozzle is provided with a filtrate outlet and is arranged in the filtrate ring groove.

[0016] Preferably, the lower end of the filtering assembly housing is integrally provided with a main hydraulic pipe top plate. A main hydraulic pipe top seat is fixedly installed on the main hydraulic pipe top plate. The lower end of the main hydraulic pipe top seat is connected to a main hydraulic pipe, and a shock-absorbing installation bottom plate is provided at the lower end of the main hydraulic pipe;

[0017] The lower end of the filtering assembly housing is also integrally provided with a secondary hydraulic pipe top plate. A number of secondary hydraulic pipe top seats are fixedly installed on the secondary hydraulic pipe top plate. The lower end of the secondary hydraulic pipe top seat is connected to a secondary hydraulic pipe, and a shock-absorbing spring is sleeved on each secondary hydraulic pipe.

[0018] Preferably, the upper end of the filtering liquid inlet pipe is fixedly connected to the inlet pipe connecting throat.

[0019] Preferably, the flocculent liquid scale filtering member includes: a liquid scale filtering member housing, a housing inlet and outlet, a filtering liquid separating plate, a flocculent liquid scale hanging rod;

[0020] The outer shell of the liquid scale filter element is provided with shell inlet and outlet openings at both the upper and lower ends. A filter liquid separation plate is fixedly installed between the inner walls of the outer shell of the liquid scale filter element, and a number of flocculent liquid scale hanging rods are horizontally arranged between the filter liquid separation plates.

[0021] Preferably, the siphon drain pipe group includes: a siphon drain pipe, a siphon port pressure increasing cover, an exhaust hole, a pressure increasing boss, and a siphon inlet liquid tank;

[0022] The upper end of the siphon drain pipe is integrally provided with a siphon port pressure increasing cover. An exhaust hole is opened at the top end of the siphon drain pipe. A siphon inlet liquid tank is opened at the lower end of the siphon port pressure increasing cover, and a pressure increasing boss is arranged in the middle of the siphon inlet liquid tank.

[0023] A heat pump system containing a siphon type liquid storage device includes:

[0024] A liquid storage device pipe group, a heat pump liquid cooler, a heat pump evaporator, a heat pump oil tank, an equipment control cabinet, an oil separator, and a heat pump compressor;

[0025] The liquid storage device pipe group is connected to the heat pump liquid cooler and the heat pump evaporator through pipelines. The heat pump compressor is communicated with the heat pump oil tank through an oil separator. The equipment control cabinet integrates the functions of monitoring and adjusting the operating parameters of the liquid storage device pipe group, the liquid cooler, the evaporator, and the compressor;

[0026] The heat pump liquid cooler includes: a shell, an internal cooling coil, a coolant inlet / outlet, and a temperature sensor arranged inside the shell; the cooling coil is a spiral multi-layer structure, and a flow control valve linked with the equipment control cabinet is arranged at the coolant inlet;

[0027] The heat pump evaporator includes: an evaporation pipe group, a gas-liquid separator, and a refrigerant distributor;

[0028] The surface of the evaporation pipe group is coated with a hydrophilic coating. The distributor is provided with a plurality of shunt holes, and the shunt hole diameters decrease in a gradient along the fluid direction;

[0029] The heat pump oil tank is provided with: an oil storage cavity, a heater, and an oil level sensor; the heater is an electric heating sheet attached to the outer wall of the oil storage cavity and connected to the equipment control cabinet to start and stop according to the oil temperature;

[0030] The equipment control cabinet includes: a main controller, a human-machine interaction interface, a data storage module, and a communication module; the communication module supports 4G / 5G wireless transmission and is used for remotely sending system alarm signals and energy efficiency data;

[0031] The oil separator adopts a cyclone separation structure, is internally provided with multiple layers of stainless steel filter meshes, and is connected to the heat pump oil tank through a return oil pipe at the bottom; a pressure sensor is arranged at the outlet of the oil separator to monitor the separation efficiency and trigger a maintenance reminder;

[0032] The heat pump compressor is a variable-frequency scroll compressor, and its exhaust port is connected to an oil separator through a shock-absorbing hose; a temperature sensor and a vibration sensor are integrated on the compressor housing, and the real-time data is fed back to the equipment control cabinet.

[0033] The present invention provides a siphon liquid reservoir and a heat pump system containing the liquid reservoir. It has the following beneficial effects:

[0034] (1) By arranging the improved liquid reservoir tube group in the entire heat pump system, the present invention can adjust the liquid refrigerant amount in the liquid reservoir during the operation of the unit, improve the reliability and capacity of the unit, and improve the reliability of the unit: when the unit shuts down and operates in the vacuum pumping mode, the pressure difference between the liquid inlet pipe and the liquid outlet pipe is not sufficient to suck the liquid from the siphon drain port to a sufficient height for drainage, which will not impact the downstream expansion valve, and no impurities will enter the expansion valve part, affecting the next startup.

[0035] (2) The present invention reduces the capacity attenuation of the unit: the diameter of the siphon drain port is equivalent to that of the liquid outlet pipe, and when the flow rate is large, the refrigerant pressure loss is small, having little impact on the unit capacity.

[0036] (3) After the refrigerant enters from the liquid inlet pipe of the liquid reservoir and passes through the liquid inlet pipe connecting throat, due to the high-pressure environment of the liquid path in the whole system, there will be a strong impact when entering the liquid reservoir shell. However, through the main hydraulic pipe roof plate at the lower end of the liquid inlet decompression and filtration component, the main hydraulic pipe top seat at the lower end is squeezed, so that buffering can be carried out through the damping effect in the main hydraulic pipe, and the surrounding auxiliary hydraulic pipes can assist in correcting the buffering direction, and the filter component shell is supported by the shock-absorbing spring.

[0037] (4) The present invention connects the coolant into the filtered liquid inlet through the liquid inlet pipe connecting throat, flows through the flocculent liquid scale filter part through the filtered flow dividing pipe orifice, and through the filtrate outlet at the upper end, so that after flowing out from the filtrate ring groove, the coolant can flow through the baffle liquid passing block at the upper end of the second baffle through the first baffle, and the residue liquid scale is filtered off through the filtrate mesh.

[0038] (5) The present invention flows in and out through the shell inlet and outlet at the upper and lower ends of the liquid scale filter part shell, separates the coolant through the filter liquid separating plate, and hangs the flocculent liquid scale carried by the coolant from the liquid path through the flocculent liquid scale hanging rod between the intervals, thus completing the filtration of the suspended liquid scale.

[0039] (6) The present invention pushes the coolant into the high-pressure environment inside the liquid reservoir shell through the siphon inlet groove at the lower end of the siphon port pressure increasing cover, and reduces the liquid flow diameter at the siphon drain pipe orifice through the pressure increasing boss, so as to reduce the air entry and increase the drainage smoothness. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0041] Figure 2 It is a schematic structural diagram from another perspective in the present invention;

[0042] Figure 3 It is a schematic structural diagram of the liquid storage tube group in the present invention;

[0043] Figure 4 It is a front view schematic structural diagram of the liquid storage tube group in the present invention;

[0044] Figure 5 In the present invention Figure 4 It is a schematic cross-sectional structural diagram of the a-a line;

[0045] Figure 6 In the present invention Figure 5 It is an enlarged schematic structural diagram at position A;

[0046] Figure 7 It is a schematic structural diagram of the liquid inlet pressure reducing and filtering assembly in the present invention;

[0047] Figure 8 It is a side view schematic structural diagram of the liquid inlet pressure reducing and filtering assembly in the present invention;

[0048] Figure 9 In the present invention Figure 8 It is a schematic cross-sectional structural diagram of the b-b line;

[0049] Figure 10 In the present invention Figure 9 It is an enlarged schematic structural diagram at position B;

[0050] Figure 11 It is a schematic cross-sectional structural diagram of the flocculent liquid scale filter in the present invention;

[0051] Figure 12 It is a side view schematic structural diagram of the flocculent liquid scale filter in the present invention;

[0052] Figure 13 In the present invention Figure 12 It is a schematic cross-sectional structural diagram of the c-c line;

[0053] Figure 14 It is a schematic structural diagram of the siphon drainage tube group in the present invention;

[0054] Figure 15 It is a side view schematic structural diagram of the siphon drainage tube group in the present invention;

[0055] Figure 16 In the present invention Figure 15 It is a schematic cross-sectional structural diagram of the d-d line.

[0056] Among them, 1. Equipment frame; 2. Liquid storage pipe group; 201. Liquid storage tank shell; 202. Liquid storage tank base bracket; 203. Liquid storage tank inlet pipe; 204. Inlet pipe connecting throat; 205. Inlet liquid pressure reducing and filtering assembly; 2051. Filter assembly shell; 2052. Filter assembly top cover; 2053. Filtrate ring groove; 2054. Filter inlet pipe; 2055. Filtrate outlet; 2056. Filter inlet; 2057. Filter diversion nozzle; 2058. Flocculent liquid scale filter element; 2059. Shock-absorbing mounting base plate; 20510. Main hydraulic pipe; 20511. Main hydraulic pipe top plate; 20512. Main hydraulic pipe top seat; 20513. Auxiliary hydraulic pipe top plate; 20514. Auxiliary hydraulic pipe; 20515. Shock-absorbing spring; 20516. Auxiliary hydraulic pipe top seat; 20517. Liquid scale filter element shell; 20518. Shell inlet and outlet; 20519. Filter liquid separation plate; 20520. Flocculent liquid scale hanging rod; 206. Filter assembly limit frame; 207. First baffle; 208. Siphon drainage pipe group; 2081. Siphon drainage pipe; 2082. Siphon port pressure increasing cover; 2083. Vent hole; 2084. Pressure increasing boss; 2085. Siphon inlet groove; 209. Second baffle; 210. Baffle liquid passing stop block; 211. Filtrate net; 212. Filter net isolation strip; 213. Splash-proof baffle; 3. Heat pump liquid cooler; 4. Heat pump evaporator; 5. Heat pump oil tank; 6. Equipment control cabinet; 7. Equipment frame cross beam; 8. Oil separator; 9. Heat pump compressor; 10. Evaporator bracket; 11. Liquid cooler bracket; 12. Compressor bracket; 13. Oil tank mounting bracket. Detailed implementation manner

[0057] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0058] Such as Figures 1 to 2As shown in the figure, an embodiment of the present invention provides a siphon type liquid reservoir, which includes an equipment frame 1 and a liquid reservoir pipe group 2. A number of equipment frame cross beams 7 are installed between the equipment frames 1. The liquid reservoir pipe group 2 is installed on the equipment frame cross beams 7. A liquid cooler support 11 is fixedly installed at the upper end of the liquid reservoir pipe group 2. A heat pump liquid cooler 3 is fixedly installed at the upper end of the liquid cooler support 11. An evaporator support 10 is also fixedly installed on the equipment frame cross beam 7. A heat pump evaporator 4 is fixedly installed at the upper end of the evaporator support 10. An oil tank installation support 13 is fixedly installed on the equipment frame cross beam 7. A heat pump oil tank 5 is fixedly installed at the upper end of the oil tank installation support 13. An oil separator 8 is fixedly installed at the upper end of the equipment frame cross beam 7. A compressor support 12 is fixedly installed at the upper end of the oil separator 8. A heat pump compressor 9 is fixedly installed at the upper end of the compressor support 12. An equipment control cabinet 6 is also fixedly installed at the upper end of the equipment frame cross beam 7.

[0059] In the above technical solution, by arranging the improved liquid reservoir pipe group 2 in the entire heat pump system, it is possible to adjust the liquid refrigerant amount in the liquid reservoir during the operation of the unit, improve the reliability and capacity of the unit, and improve the reliability of the unit: when the unit shuts down and operates in the vacuum pumping mode, the pressure difference between the liquid inlet pipe and the liquid outlet pipe is not sufficient to suck the liquid from the siphon outlet to a sufficient height for discharge, which will not cause an impact on the downstream expansion valve, and no impurities will enter the expansion valve part, affecting the next startup.

[0060] Among them, the attenuation of the unit capacity is reduced: the diameter of the siphon drainage port is equivalent to that of the liquid outlet pipe. When the flow rate is large, the refrigerant pressure loss is small, and the impact on the unit capacity is small.

[0061] Such as Figure 1 、 Figures 4 to 6As shown in the figure, the liquid storage pipe group 2 includes: a liquid storage shell 201, a liquid storage base bracket 202, a liquid storage inlet pipe 203, an inlet pipe connecting throat 204, an inlet liquid pressure reducing and filtering component 205, a filtering component limiting frame 206, a first baffle 207, and a siphon drainage pipe group 208. The liquid storage inlet pipe 203 is fixedly installed at the upper end of the liquid storage shell 201, the liquid storage base bracket 202 is fixedly installed at the lower end of the liquid storage shell 201, the lower end of the liquid storage inlet pipe 203 is fixedly connected to the inlet pipe connecting throat 204, and the inlet liquid pressure reducing and filtering component 205 is arranged at the lower end of the inlet pipe connecting throat 204. Two filtering component limiting frames 206 are fixedly installed on one side surface of the first baffle 207, which is fixedly installed on the inner wall of the liquid storage shell 201. The siphon drainage pipe group 208 is fixedly installed at the lower end inside the liquid storage shell 201. A second baffle 209 is fixedly installed on the inner wall of the liquid storage shell 201. A baffle liquid passing block 210 is integrally arranged at the upper end of the second baffle 209. A filtrate net 211 is fixedly installed on the side surface of the baffle liquid passing block 210. A filter net isolation strip 212 is fixedly installed at the upper end of the filtrate net 211, and a splash-proof baffle 213 is fixedly installed at the upper end of the filter net isolation strip 212.

[0062] In the above technical solution, the coolant is introduced into the filtering inlet 2056 through the inlet pipe connecting throat 204, flows through the flocculent liquid scale filtering member 2058 through the filtering diversion orifice 2057, and exits through the upper filtrate outlet 2055. After flowing out of the filtrate ring groove 2053, the coolant flows through the baffle liquid passing block 210 at the upper end of the second baffle 209 through the first baffle 207, and the residue liquid scale is filtered out by the filtrate net 211.

[0063] As Figure 5 、 Figures 7 to 13 shown in the figure, the inlet liquid pressure reducing and filtering component 205 includes: a filtering component housing 2051, a filtering component top cover 2052, a filtrate ring groove 2053, a filtering inlet pipe 2054, a filtrate outlet 2055, a filtering inlet 2056, a filtering diversion orifice 2057, and a flocculent liquid scale filtering member 2058. The filtering component top cover 2052 is fixedly installed at the upper end of the filtering component housing 2051. The filtering inlet pipe 2054 is fixedly installed in the middle of the filtering component top cover 2052. The filtrate ring groove 2053 is formed on the outer circumference of the filtering inlet pipe 2054 and on the upper surface of the filtering component top cover 2052. The filtering inlet 2056 is opened at the lower end of the filtering inlet pipe 2054. A plurality of filtering diversion orifices 2057 are opened at the lower end of the filtering inlet 2056. A flocculent liquid scale filtering member 2058 is arranged at the upper end of each filtering diversion orifice 2057. The filtrate outlet 2055 is opened at the upper end of each filtering diversion orifice 2057 and is arranged in the filtrate ring groove 2053.

[0064] At the lower end of the filter component housing 2051, a main hydraulic pipe top plate 20511 is integrally provided. A main hydraulic pipe top seat 20512 is fixedly installed on the main hydraulic pipe top plate 20511. A main hydraulic pipe 20510 is connected to the lower end of the main hydraulic pipe top seat 20512. A shock-absorbing installation bottom plate 2059 is provided at the lower end of the main hydraulic pipe 20510. At the lower end of the filter component housing 2051, a secondary hydraulic pipe top plate 20513 is also integrally provided. A number of secondary hydraulic pipe top seats 20516 are fixedly installed on the secondary hydraulic pipe top plate 20513. A secondary hydraulic pipe 20514 is connected to the lower end of the secondary hydraulic pipe top seat 20516. A shock-absorbing spring 20515 is sleeved on each secondary hydraulic pipe 20514. The upper end of the filter inlet pipe 2054 is fixedly connected to the inlet pipe connecting throat 204.

[0065] In the above technical solution, after the refrigerant enters from the liquid storage inlet pipe 203 and passes through the inlet pipe connecting throat 204, due to the high-pressure environment of the entire system liquid path, there will be a strong impact force when entering the liquid storage housing 201. Through the main hydraulic pipe top plate 20511 at the lower end of the inlet liquid pressure reducing and filtering component 205, the main hydraulic pipe top seat 20512 at the lower end is squeezed, so that buffering can be carried out through the damping effect in the main hydraulic pipe 20510. The surrounding secondary hydraulic pipes 20514 can assist in correcting the buffering direction and support the filter component housing 2051 through the shock-absorbing springs 20515.

[0066] The flocculent liquid scale filter element 2058 includes: a liquid scale filter element housing 20517, a housing inlet and outlet 20518, a filter liquid separating plate 20519, and a flocculent liquid scale hanging rod 20520. The housing inlet and outlet 20518 are provided at both the upper and lower ends of the liquid scale filter element housing 20517. A filter liquid separating plate 20519 is fixedly installed between the inner walls of the liquid scale filter element housing 20517. A number of flocculent liquid scale hanging rods 20520 are horizontally arranged between the filter liquid separating plates 20519.

[0067] In the above technical solution, it flows in and out through the housing inlet and outlet 20518 at the upper and lower ends of the liquid scale filter element housing 20517, the coolant is separated by the filter liquid separating plate 20519, and the flocculent liquid scale carried by the coolant in the liquid path is hung by the flocculent liquid scale hanging rods 20520 between the intervals, thereby completing the filtration of the suspended liquid scale.

[0068] Such as Figure 5 、 Figures 14 to 16As shown, the siphon drain pipe group 208 includes: a siphon drain pipe 2081, a siphon port pressure increasing cover 2082, an exhaust hole 2083, a pressure increasing boss 2084, and a siphon liquid inlet groove 2085; an integrated siphon port pressure increasing cover 2082 is provided at the upper end of the siphon drain pipe 2081, an exhaust hole 2083 is opened at the top of the siphon drain pipe 2081, a siphon liquid inlet groove 2085 is opened at the lower end of the siphon port pressure increasing cover 2082, and a pressure increasing boss 2084 is arranged in the middle of the siphon liquid inlet groove 2085.

[0069] In the above technical solution, the coolant is pushed into the high-pressure environment inside the liquid storage device housing 201 through the siphon liquid inlet groove 2085 at the lower end of the siphon port pressure increasing cover 2082, and the liquid flow diameter at the pipe orifice of the siphon drain pipe 2081 is reduced through the pressure increasing boss 2084, so that the entry of air can be reduced and the smoothness of liquid drainage can be increased.

[0070] A heat pump system containing a siphon type liquid storage device includes:

[0071] a liquid storage device pipe group, a heat pump liquid cooler, a heat pump evaporator, a heat pump oil tank, an equipment control cabinet, an oil separator, and a heat pump compressor;

[0072] The liquid storage device pipe group is connected to the heat pump liquid cooler and the heat pump evaporator through pipelines, the heat pump compressor is communicated with the heat pump oil tank through an oil separator, and the equipment control cabinet integrates the functions of monitoring and adjusting the operating parameters of the liquid storage device pipe group, the liquid cooler, the evaporator, and the compressor;

[0073] The heat pump liquid cooler includes: a housing, an internal cooling coil, a coolant inlet / outlet, and a temperature sensor arranged inside the housing; the cooling coil is a spiral multi-layer structure, and a flow control valve linked with the equipment control cabinet is provided at the coolant inlet;

[0074] The heat pump evaporator includes: an evaporation pipe group, a gas-liquid separator, and a refrigerant distributor;

[0075] The surface of the evaporation pipe group is coated with a hydrophilic coating, the distributor is provided with a plurality of shunt holes, and the shunt hole diameters decrease in a gradient along the fluid direction;

[0076] The heat pump oil tank is provided with: an oil storage chamber, a heater, and an oil level sensor; the heater is an electric heating sheet attached to the outer wall of the oil storage chamber and connected to the equipment control cabinet to start and stop according to the oil temperature;

[0077] The equipment control cabinet includes: a main controller, a human-machine interface, a data storage module, and a communication module; the communication module supports 4G / 5G wireless transmission and is used for remotely sending system alarm signals and energy efficiency data;

[0078] The oil separator adopts a cyclone separation structure, with multiple layers of stainless steel filter screens inside, and its bottom is connected to the heat pump oil tank through an oil return pipe; a pressure sensor is provided at the outlet of the oil separator to monitor the separation efficiency and trigger a maintenance reminder;

[0079] The heat pump compressor is a variable-frequency scroll compressor, and its exhaust port is connected to the oil separator through a shock-absorbing hose; temperature sensors and vibration sensors are integrated on the compressor housing, and the real-time data is fed back to the equipment control cabinet.

[0080] Working principle:

[0081] By arranging the improved liquid receiver tube group 2 in the entire heat pump system, the present invention can adjust the amount of liquid refrigerant in the liquid receiver during the operation of the unit, improve the reliability and capacity of the unit, and improve the reliability of the unit: when the unit shuts down, it operates in a vacuum pumping mode. The pressure difference between the liquid inlet pipe and the liquid outlet pipe is not sufficient to suck the liquid to a sufficient height from the siphon drain port for drainage, which will not cause an impact on the downstream expansion valve, and no impurities will enter the expansion valve part, affecting the next startup;

[0082] Among them, reducing the capacity attenuation of the unit: the diameter of the siphon drain port is equivalent to that of the liquid outlet pipe. When the flow rate is large, the pressure loss of the refrigerant is small, and the impact on the unit capacity is small;

[0083] Among them, after the refrigerant enters from the liquid inlet pipe 203 of the liquid receiver and passes through the liquid inlet pipe connecting throat 204, due to the high-pressure environment of the liquid path of the entire system, there will be a strong impact when entering the liquid receiver housing 201. However, through the main hydraulic pipe top plate 20511 at the lower end of the liquid inlet decompression and filtration component 205, the lower main hydraulic pipe top seat 20512 is squeezed, so that buffering can be carried out through the damping effect in the main hydraulic pipe 20510, and the surrounding auxiliary hydraulic pipes 20514 can assist and correct the buffering direction, and the filtration component housing 2051 is supported by the shock-absorbing spring 20515;

[0084] Among them, the coolant is connected into the filtration liquid inlet 2056 through the liquid inlet pipe connecting throat 204, flows through the flocculent liquid scale filtration part 2058 through the filtration shunt pipe orifice 2057, and through the filtrate outlet 2055 at the upper end, so that after flowing out of the filtrate ring groove 2053, the coolant passes through the first baffle 207 and flows through the baffle liquid passing block 210 at the upper end of the second baffle 209, and the residue liquid scale is filtered off through the filtrate mesh 211;

[0085] Among them, it flows in and out through the shell inlet and outlet 20518 at the upper and lower ends of the liquid scale filtration part housing 20517, the coolant is separated by the filtration liquid separating plate 20519, and the flocculent liquid scale hanging rod 20520 between the intervals hangs the flocculent liquid scale carried by the coolant from the liquid path, thus completing the filtration of the suspended liquid scale;

[0086] Among them, the coolant is pushed into the high-pressure environment inside the liquid storage container housing 201 through the siphon liquid inlet tank 2085 at the lower end of the siphon port pressure increasing cover 2082, and the liquid flow diameter at the nozzle of the siphon liquid discharge pipe 2081 is reduced through the pressure increasing boss 2084, so that the entry of air can be reduced and the smoothness of liquid discharge can be increased.

[0087] Obviously, the above-mentioned embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is impossible to enumerate all the implementation manners here. Any obvious changes or modifications derived from the technical solutions of the present invention still fall within the protection scope of the present invention.

Claims

1. A siphon type liquid reservoir, comprising an equipment frame (1) and a liquid reservoir tube group (2), characterized in that, A number of equipment frame crossbeams (7) are installed between the equipment frames (1). The liquid accumulator tube group (2) is installed on the equipment frame crossbeams (7). A liquid cooler support (11) is fixedly installed at the upper end of the liquid accumulator tube group (2), and a heat pump liquid cooler (3) is fixedly installed at the upper end of the liquid cooler support (11). An evaporator support (10) is also fixedly installed on the equipment frame crossbeam (7), and a heat pump evaporator (4) is fixedly installed at the upper end of the evaporator support (10). The liquid accumulator tube group (2) includes: a liquid accumulator housing (201), a liquid accumulator base support (202), a liquid accumulator inlet pipe (203), an inlet pipe connecting throat (204), an inlet pressure reducing and filtering assembly (205), a filtering assembly limiting frame (206), a first baffle (207), a siphon drain pipe group (208). A liquid accumulator inlet pipe (203) is fixedly installed at the upper end of the liquid accumulator housing (201), a liquid accumulator base support (202) is fixedly installed at the lower end of the liquid accumulator housing (201), the lower end of the liquid accumulator inlet pipe (203) is fixedly connected to an inlet pipe connecting throat (204), and an inlet pressure reducing and filtering assembly (205) is arranged at the lower end of the inlet pipe connecting throat (204). A first baffle (207) is fixedly installed on the inner wall of the liquid accumulator housing (201). Two filtering assembly limiting frames (206) are fixedly installed on one side surface of the first baffle (207), and a siphon drain pipe group (208) is fixedly installed at the lower end inside the liquid accumulator housing (201). A second baffle (209) is fixedly installed on the inner wall of the liquid accumulator housing (201). A baffle liquid passing block (210) is integrally arranged at the upper end of the second baffle (209). A filtrate net (211) is fixedly installed on the side surface of the baffle liquid passing block (210). A filter net isolation strip (212) is fixedly installed at the upper end of the filtrate net (211), and a splash-proof baffle (213) is fixedly installed at the upper end of the filter net isolation strip (212).

2. The siphon type liquid reservoir according to claim 1, characterized in that, An oil tank installation support (13) is fixedly installed on the equipment frame crossbeam (7), and a heat pump oil tank (5) is fixedly installed at the upper end of the oil tank installation support (13). An oil separator (8) is fixedly installed at the upper end of the equipment frame crossbeam (7). A compressor support (12) is fixedly installed at the upper end of the oil separator (8), and a heat pump compressor (9) is fixedly installed at the upper end of the compressor support (12). An equipment control cabinet (6) is also fixedly installed at the upper end of the equipment frame crossbeam (7).

3. A siphon liquid reservoir according to claim 2, characterized in that, The inlet pressure reducing and filtering assembly (205) includes: a filtering assembly housing (2051), a filtering assembly top cover (2052), a filtrate ring groove (2053), a filtering inlet pipe (2054), a filtrate outlet (2055), a filtering inlet (2056), a filtering diversion nozzle (2057), a flocculent liquid scale filtering member (2058). At the upper end of the filter component housing (2051), a filter component top cover (2052) is fixedly installed. In the middle of the filter component top cover (2052), a filter inlet pipe (2054) is fixedly installed. An overflow ring groove (2053) is formed on the outer circumference of the filter inlet pipe (2054) and on the upper surface of the filter component top cover (2052). At the lower end of the filter inlet pipe (2054), a filter inlet opening (2056) is provided. At the lower end of the filter inlet opening (2056), a number of filter diversion nozzles (2057) are provided. At the upper end of each filter diversion nozzle (2057), a flocculent liquid scale filter element (2058) is provided; At the upper end of each filter diversion nozzle (2057), an overflow outlet (2055) is provided and is arranged in the overflow ring groove (2053).

4. A siphon type liquid reservoir according to claim 3, characterized in that, At the lower end of the filter component housing (2051), a main hydraulic pipe top plate (20511) is integrally provided. On the main hydraulic pipe top plate (20511), a main hydraulic pipe top seat (20512) is fixedly installed. At the lower end of the main hydraulic pipe top seat (20512), a main hydraulic pipe (20510) is connected. At the lower end of the main hydraulic pipe (20510), a shock-absorbing mounting bottom plate (2059) is provided; At the lower end of the filter component housing (2051), a secondary hydraulic pipe top plate (20513) is also integrally provided. On the secondary hydraulic pipe top plate (20513), a number of secondary hydraulic pipe top seats (20516) are fixedly installed. At the lower end of the secondary hydraulic pipe top seat (20516), a secondary hydraulic pipe (20514) is connected. On each secondary hydraulic pipe (20514), a shock-absorbing spring (20515) is sleeved.

5. A siphon liquid reservoir according to claim 4, characterized in that, The upper end of the filter inlet pipe (2054) is fixedly connected to the inlet pipe connection throat (204).

6. The siphon type liquid storage device according to claim 5, characterized in that, The flocculent liquid scale filter element (2058) includes: a liquid scale filter element housing (20517), a housing inlet and outlet (20518), a filter liquid separation plate (20519), and a flocculent liquid scale hanging rod (20520); The liquid scale filter element housing (20517) is provided with housing inlet and outlets (20518) at both the upper and lower ends. A filter liquid separation plate (20519) is fixedly installed between the inner walls of the liquid scale filter element housing (20517). A number of flocculent liquid scale hanging rods (20520) are horizontally arranged between the filter liquid separation plates (20519).

7. A siphon type liquid reservoir according to claim 6, wherein, The siphon drain pipe group (208) includes: a siphon drain pipe (2081), a siphon mouth pressure increasing cover (2082), an exhaust hole (2083), a pressure increasing boss (2084), and a siphon inlet tank (2085); At the upper end of the siphon drain pipe (2081), a siphon mouth pressure increasing cover (2082) is integrally provided. At the top of the siphon drain pipe (2081), an exhaust hole (2083) is provided. At the lower end of the siphon mouth pressure increasing cover (2082), a siphon inlet tank (2085) is provided. A pressure increasing boss (2084) is arranged in the middle of the siphon inlet tank (2085).

8. A heat pump system containing a siphon type liquid storage device, comprising: Liquid accumulator tube group, heat pump liquid cooler, heat pump evaporator, heat pump oil tank, equipment control cabinet, oil separator and heat pump compressor; The liquid accumulator tube group is connected to the heat pump liquid cooler and the heat pump evaporator through pipelines. The heat pump compressor is communicated with the heat pump oil tank through an oil separator. The equipment control cabinet integrates the functions of monitoring and adjusting the operating parameters of the liquid accumulator tube group, liquid cooler, evaporator and compressor; The heat pump liquid cooler includes: a shell, an internal cooling coil, a coolant inlet / outlet, and a temperature sensor arranged in the shell; the cooling coil is a spiral multi-layer structure, and a flow control valve linked with the equipment control cabinet is arranged at the coolant inlet; The heat pump evaporator includes: an evaporation tube group, a gas-liquid separator and a refrigerant distributor; The surface of the evaporation tube group is coated with a hydrophilic coating. The distributor is provided with a plurality of shunt holes, and the shunt hole diameters decrease in a gradient along the fluid direction; The heat pump oil tank is provided with: an oil storage cavity, a heater and an oil level sensor; the heater is an electric heating sheet attached to the outer wall of the oil storage cavity and connected to the equipment control cabinet to start and stop according to the oil temperature; The equipment control cabinet includes: a main controller, a human-machine interface, a data storage module and a communication module; the communication module supports 4G / 5G wireless transmission and is used to remotely send system alarm signals and energy efficiency data; The oil separator adopts a cyclone separation structure, is internally provided with multiple layers of stainless steel filter screens, and is connected to the heat pump oil tank through an oil return pipe at the bottom; a pressure sensor is arranged at the outlet of the oil separator to monitor the separation efficiency and trigger a maintenance reminder; The heat pump compressor is a variable-frequency scroll compressor, and its exhaust port is connected to the oil separator through a shock-absorbing hose; temperature sensors and vibration sensors are integrated on the compressor shell, and real-time data is fed back to the equipment control cabinet.

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