CN115790010A - Gas-liquid separator and air conditioner - Google Patents
Gas-liquid separator and air conditioner Download PDFInfo
- Publication number
- CN115790010A CN115790010A CN202211619451.4A CN202211619451A CN115790010A CN 115790010 A CN115790010 A CN 115790010A CN 202211619451 A CN202211619451 A CN 202211619451A CN 115790010 A CN115790010 A CN 115790010A
- Authority
- CN
- China
- Prior art keywords
- floating
- liquid level
- switch structure
- liquid
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 265
- 238000010438 heat treatment Methods 0.000 claims abstract description 113
- 238000001514 detection method Methods 0.000 claims abstract description 41
- 238000007667 floating Methods 0.000 claims description 170
- 230000000630 rising effect Effects 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 239000003507 refrigerant Substances 0.000 abstract description 21
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 13
- 229910052731 fluorine Inorganic materials 0.000 description 13
- 239000011737 fluorine Substances 0.000 description 13
- 238000005057 refrigeration Methods 0.000 description 8
- 230000008859 change Effects 0.000 description 7
- 238000009825 accumulation Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- WSNMPAVSZJSIMT-UHFFFAOYSA-N COc1c(C)c2COC(=O)c2c(O)c1CC(O)C1(C)CCC(=O)O1 Chemical compound COc1c(C)c2COC(=O)c2c(O)c1CC(O)C1(C)CCC(=O)O1 WSNMPAVSZJSIMT-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The invention provides a gas-liquid separator and an air conditioner, the gas-liquid separator comprises: casing, liquid level detection device and heating device, the casing is inside can to hold gas and/or liquid, liquid level detection device set up in the inside of casing and can detect the liquid level height of liquid, heating device set up in just can heat liquid in the casing, and liquid level detection device with heating device is integrated as an organic whole, liquid level detection device can be according to the high control of liquid level heating device heats or does not heat. According to the invention, whether the refrigerant liquid accumulated in the gas-liquid separator is heated and gasified or not can be automatically controlled according to the height of the liquid in the gas-liquid separator, so that the liquid level in the gas-liquid separator is effectively prevented from being too high, and the starting reliability of the compressor is improved.
Description
Technical Field
The invention relates to the technical field of gas-liquid separation, in particular to a gas-liquid separator and an air conditioner.
Background
With the great application of 4G and the gradual popularization of 5G, the heat productivity of various data processing devices is increasing, and the requirements of data centers on the cooling capacity and the energy conservation of air conditioning equipment are also increasing.
The outdoor natural cold source in transitional seasons and cold winter is adopted to cool the data center, the operating cost of air conditioning equipment can be greatly reduced, and a refrigeration system which is designed by combining a fluorine pump heat pipe and compression refrigeration is commonly adopted. In winter or transition season, the outdoor cold air is very suitable to be used as a natural cold source, at the moment, a fluorine pump heat pipe refrigeration mode is started, the operation of the compressor is stopped, the fluorine pump is used for driving the refrigerant to realize heat pipe refrigeration operation, and the heat pipe transfers the cold energy of the outdoor natural cold source (cold air) in winter or transition season into the room to cool the data center, so that the operation cost of the equipment is greatly reduced.
Split air-conditioning equipment usually adopts mechanically driven split heat pipes, for example, fluorine pumps such as liquid pumps or air pumps are adopted to drive the refrigerant in the heat pipes to flow. When the heat pipe and the compression refrigeration device share a system, a mode of parallel connection design of a throttling element and a solenoid valve is generally adopted. The electromagnetic valve is closed during the compression refrigeration operation, and the refrigerant is subjected to pressure reduction operation through the throttling element; when the fluorine pump heat pipe is used for refrigerating, the electromagnetic valve is opened, and the refrigerant mainly passes through the low-resistance electromagnetic valve so as to avoid consuming excessive gravity action or the lift of the fluorine pump when passing through the throttling element.
When the heat pipe and the heat pump are combined to share the system, although a plurality of parts can be reduced, the debugging and the optimization of the system are very complicated problems, and some problems which cannot be ignored exist in the aspect of the reliable operation of the system. For example, a gas-liquid separator is arranged between an evaporator and a compressor, when a fluorine pump heat pipe operates, refrigerant gas at an outlet of the evaporator may carry refrigerant liquid which is not completely evaporated, and then excessive refrigerant liquid may accumulate in the gas-liquid separator, so that the refrigerant flow rate of a fluorine pump heat pipe system is affected, the liquid level of a liquid storage tank arranged at an inlet end of a fluorine pump is too low, and the cavitation phenomenon at a liquid pumping end of the fluorine pump is easily caused; when the fluorine pump heat pipe mode is converted into the compression refrigeration mode, the gas-liquid separator is easy to absorb gas and carry liquid due to excessive refrigerant liquid accumulated in the gas-liquid separator, so that the liquid impact phenomenon is easy to occur, and the operation reliability of the compressor is reduced.
In a conventional refrigeration apparatus, a compressor and a gas-liquid separator are generally disposed outside the chamber. In the process of gradually reducing the outdoor temperature in winter, the indoor refrigerant gas can slowly migrate to the outdoor unit, and can be gradually cooled and liquefied in the gas-liquid separator, and excessive refrigerant liquid can be accumulated in the gas-liquid separator, which can affect the starting operation of the compressor. Therefore, it is necessary to solve the problem of excessive accumulation of refrigerant liquid in the gas-liquid separator, and thus it is necessary to design a multifunctional gas-liquid separator.
The invention provides a gas-liquid separator and an air conditioner, which are researched and designed because the gas-liquid separator in the prior art has the technical problems that the starting reliability of a compressor is easily influenced due to excessive accumulation of refrigerant liquid in the gas-liquid separator.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defect that the starting reliability of a compressor is easily affected due to excessive accumulation of refrigerant liquid in a gas-liquid separator in the prior art, thereby providing the gas-liquid separator and an air conditioner.
In order to solve the above problems, the present invention provides a gas-liquid separator comprising:
casing, liquid level detection device and heating device, the casing is inside can to hold gas and/or liquid, liquid level detection device set up in the inside of casing and can detect the liquid level height of liquid, heating device set up in just can heat liquid in the casing, and liquid level detection device with heating device is integrated as an organic whole, liquid level detection device can be according to the high control of liquid level heating device heats or does not heat.
In some embodiments, the liquid level detection device includes a floating member, the floating member can float on a liquid level and float up and down along with the liquid level, the heating device includes a switch structure, a power line and a heating element, the power line is connected with the heating element to heat the liquid through the heating element, the switch structure can control the power on and off of the power line, and the switch structure can be controlled by the floating member to realize the on or off.
In some embodiments, when the floating member detects that the liquid level of the liquid level rises to be higher than a preset height, the switch structure is opened, so that the power line can be controlled to be electrified, and the heating body is electrified and heats the liquid; when the floating piece detects that the liquid level of the liquid level drops to be lower than the preset height, the switch structure is closed, so that the power line can be controlled to be powered off, and the heating body is powered off and does not heat the liquid.
In some embodiments, the heating device further includes a sleeve, the power line and the heating element are both disposed inside the sleeve, the floating member is sleeved outside the sleeve, and the floating member can slide up and down on the sleeve.
In some embodiments, the float member is a float ball and the switch structure is a magnetic switch, the magnetic switch being located inside the sleeve.
In some embodiments, the liquid level detection device further includes a first limiting part and a second limiting part, the first limiting part and the second limiting part are both fixed to the outer periphery of the sleeve, the first limiting part is located below the floating part so as to limit the lowest position of the floating part moving downwards, and the second limiting part is located above the floating part so as to limit the highest position of the floating part moving upwards.
In some embodiments, the height of the switch structure in the vertical direction corresponds to the floating member, and the height of the switch structure in the vertical direction is located between the first limiting member and the second limiting member.
In some embodiments, the floating member includes a first floating member and a second floating member, the first floating member and the second floating member are disposed at different height positions on the sleeve, and the height of the second floating member is higher than that of the first floating member, the switch structure includes a first switch structure and a second switch structure, the first switch structure is disposed corresponding to the first floating member and can be controlled by the height of the first floating member to be turned on or turned off, and the second switch structure is disposed corresponding to the second floating member and can be controlled by the height of the second floating member to be turned on or turned off.
In some embodiments, when the floating member detects that the liquid level of the liquid level rises to be higher than a preset height, the switch structure is turned on, so that the power line can be controlled to be electrified, and the heating body is electrified and heats the liquid; when the floating piece II detects that the liquid level of the liquid level rises to be higher than a preset height II, the switch structure II is opened, so that the power line can be controlled to increase the current power, and the heating power of the heating body is increased; the second preset height is higher than the first preset height;
when the second floating piece detects that the liquid level of the liquid level is lowered to be lower than the second preset height, the second switch structure is closed, the power line is controlled to reduce current power, and the heating element reduces heating power; when the first floating piece detects that the liquid level of the liquid level drops to be lower than the preset height, the first switch structure is closed, the power line is controlled to be powered off, and the heating body is powered off and does not heat the liquid.
In some embodiments, when the liquid level detection apparatus further comprises a first limit stop and a second limit stop:
the first limiting part is positioned below the first floating part to limit the lowest position of the first floating part moving downwards, and the second limiting part is positioned above the first floating part to limit the highest position of the first floating part moving upwards; the first limiting part II is located below the floating part II to limit the lowest position of the floating part II moving downwards, and the second limiting part II is located above the floating part II to limit the highest position of the floating part II moving upwards.
In some embodiments, a height of the first switch structure in a vertical direction is located between the first limiting member and the second limiting member; the height of the second switch structure in the vertical direction is located between the second first limiting part and the second limiting part.
In some embodiments, a height difference between the first preset height and the second preset height can be detected and calculated, a time difference between the sequential opening of the first switch structure and the second switch structure can be detected and calculated, and the liquid level rising speed can be calculated.
In some embodiments, the switch structure is arranged in series with the power line, and the power on/off of the power line can be controlled by the opening/closing of the switch structure, so that the power line is powered on when the switch structure is opened and the power line is powered off when the switch structure is closed;
or the switch structure is connected with the power line in parallel, the switch structure is electrically connected with the signal line, the signal line can be controlled to output different signals through the opening and closing of the switch structure, and then the power line is controlled to be powered on through the signal line, so that the power line is powered on when the switch structure is opened, and the power line is powered off when the switch structure is closed.
In some embodiments, the heating element has a spiral structure, the sleeve part matched with the heating element also has a spiral structure, and a heat conducting material is arranged between the heating element and the sleeve; the shell is of a split structure and comprises an upper shell and a lower shell which are connected, and the gas-liquid separator further comprises a gas inlet pipe and a gas outlet pipe.
The invention also provides an air conditioner which comprises the gas-liquid separator.
The gas-liquid separator and the air conditioner provided by the invention have the following beneficial effects:
according to the invention, the liquid level detection device and the heating device are arranged in the shell of the gas-liquid separator, the liquid level detection device can be used for detecting the height of the liquid level, and the heating device can be used for heating the liquid; when the liquid level is lower, the heating device can be automatically controlled to be closed by the liquid level detection device, so that the liquid level is prevented from being too low, the power of the heating device is reduced, and the energy efficiency of the refrigerating system is improved. Therefore, whether the refrigerant liquid accumulated in the gas-liquid separator is heated and gasified or not can be automatically controlled according to the height of the liquid in the gas-liquid separator, the liquid level in the gas-liquid separator is effectively prevented from being overhigh, and the starting reliability of the compressor is improved.
Drawings
FIG. 1 is a schematic view of the structure of an embodiment 1 of a gas-liquid separator of the present invention (single float level gauge);
FIG. 2 is a schematic view showing the structure of embodiment 2 of the gas-liquid separator of the present invention (multi-float level gauge);
FIG. 3 is a schematic structural view of embodiment 3 of the gas-liquid separator of the present invention (magnetic switch in series);
fig. 4 is a schematic structural view of embodiment 2 of the gas-liquid separator of the present invention (magnetic switches are connected in parallel).
The reference numerals are represented as:
1. a housing; 1a, an upper shell; 1b, a lower shell; 100. a liquid level detection device; 2. a float member; 21. a first floating piece; 22. a floating piece II; 7. a first limit piece; 71. a first limiting part I; 72. a second first limiting part; 8. a second limiting member; 81. a first second limiting part; 82. a second limiting piece II; 200. a heating device; 3. a switch structure; 4. a power line; 5. a heating element; 6. a sleeve; 9. a signal line; 10. an air outlet pipe; 11. an intake pipe.
Detailed Description
As shown in fig. 1 to 4, the present invention provides a gas-liquid separator comprising:
casing 1, liquid level detection device 100 and heating device 200, casing 1 is inside can hold gas and/or liquid, liquid level detection device 100 set up in the inside of casing 1 and the liquid level height that can detect liquid, heating device 200 set up in the casing 1 and can heat liquid, and liquid level detection device 100 with heating device 200 is integrated as an organic whole, liquid level detection device 100 can be according to the high control of liquid level heating device 200 heats or does not heat.
According to the invention, the liquid level detection device and the heating device are arranged in the shell of the gas-liquid separator, the liquid level detection device can be used for detecting the height of the liquid level, and the heating device can be used for heating the liquid; when the liquid level is low, the heating device can be automatically controlled to be closed by the liquid level detection device, so that the liquid level is prevented from being too low, the power of the heating device is reduced, and the energy efficiency of the refrigerating system is improved. Therefore, whether the refrigerant liquid accumulated in the gas-liquid separator is heated and gasified or not can be automatically controlled according to the height of the liquid in the gas-liquid separator, the liquid level in the gas-liquid separator is effectively prevented from being overhigh, and the starting reliability of the compressor is improved.
In some embodiments, the liquid level detection device 100 includes a floating member 2, the floating member 2 can float on a liquid level and float up and down along with the liquid level, the heating device 200 includes a switch structure 3, a power line 4 and a heating element 5, the power line 4 is connected with the heating element 5 to heat the liquid through the heating element 5, the switch structure 3 can control the power on and off of the power line 4, and the switch structure 3 can be controlled by the floating member 2 to be turned on or off. The liquid level detection device comprises a liquid level detection device, a liquid level detection device and a switch structure, wherein the liquid level detection device comprises a liquid level detection device and a liquid level detection device, the liquid level detection device comprises a floating piece, a heating device and a control device, the floating piece can effectively float on the liquid level of liquid in a gas-liquid separator and can effectively detect the height of the liquid level, the heating device comprises a power line and a heating body and can heat the liquid by electrifying to reduce the height of the liquid level, and the on-off of the power line can be controlled by the switch structure, so that whether the heating piece is heated or not can be automatically controlled according to the height of the liquid level, the liquid in a shell is prevented from being excessively high in an accumulated mode, and the starting reliability of a compressor is improved.
In some embodiments, when the floating member 2 detects that the liquid level rises above a preset height, the switch structure 3 is turned on, so that the power cord 4 can be controlled to be powered on, and the heating body 5 is powered on and heats the liquid; when the floating piece 2 detects that the liquid level of the liquid level drops to be lower than the preset height, the switch structure 3 is closed, so that the power line 4 can be controlled to be powered off, and the heating body 5 is powered off and does not heat the liquid. The floating piece detects the liquid level height, if the height is higher, the switch structure is automatically controlled to be turned on to heat liquid, so that the liquid level height is reduced, and if the liquid level height is lower, the switch structure is automatically controlled to be turned off to stop heating, so that electric power is reduced, and the energy efficiency of the system is improved.
In some embodiments, the heating device 200 further includes a sleeve 6, the power cord 4 and the heating element 5 are both disposed inside the sleeve 6, the floating member 2 is sleeved outside the sleeve 6, and the floating member 2 can slide up and down on the sleeve 6. The heating device further comprises a sleeve structure, the power line and the heating element can be arranged in the sleeve, the floating piece is sleeved outside the sleeve to form an integrated structure of the liquid level detection device and the heating device, and the floating piece, the power line and the heating element are integrated on the sleeve, so that the integrated structure effect of liquid level detection and heating is effectively achieved.
In some embodiments, the float 2 is a float ball and the switch structure 3 is a magnetic switch, which is located inside the sleeve 6. The floating piece and the switch structure are respectively in a preferable structure form, and the magnetic switch is preferably arranged inside the sleeve, so that the switch structure is further integrated with the floating piece, the sleeve and the like.
The invention 1, through setting up electric heating and floating ball level gauge in the conventional gas-liquid separator, the electric heater forms the integral design with the floating ball level switch; the electric heater can be started or closed according to the feedback liquid level of the floating ball liquid level meter, so that the refrigerant liquid accumulated in the gas-liquid separator is heated and gasified, and the liquid level in the gas-liquid separator is prevented from being too high.
2. The floating ball of the floating ball liquid level meter is sleeved outside the sleeve, and the magnetic switch of the floating ball liquid level meter and the power line of the electric heater are jointly arranged in the sleeve. The magnetic switch of the floating ball is connected in series with a power line of the electric heater to directly control the on-off, or the magnetic switch is independently arranged in the sleeve and leads out a signal line for external control (namely parallel connection).
The invention effectively solves the following technical problems:
1. the refrigerant liquid in the gas-liquid separator is accumulated excessively, so that the starting reliability of the compressor is easily influenced, and a multifunctional gas-liquid separator needs to be matched;
2. the fluorine pump heat pipe mode prevents excessive refrigerant liquid from accumulating in the gas-liquid separator, which is unfavorable for the operation of the fluorine pump and needs a matched multifunctional gas-liquid separator.
As shown in fig. 1 and 2, the conventional gas-liquid separator is at least provided with a container cylinder body, which comprises an upper shell and a lower shell, wherein an air inlet pipe and an air outlet pipe are usually led out from the top of the upper shell, the air outlet pipe is designed into a U shape in the cylinder body, and the side surface of the U-shaped bottom is provided with an oil return small hole and a filter assembly; the structure that the intake pipe set up in barrel inside generally designs for the part of bending and can make the gas-liquid mixture fluid get into the barrel after can realizing the centrifugal separation effect. The upper shell and the lower shell, the air inlet pipe and the upper shell and the air outlet pipe and the upper shell are connected in a sealing way by welding technology.
On the basis of the existing gas-liquid separator, the floating ball liquid level meter and the electric heating function are added. The sleeve is divided into two straight pipe sections and a spiral section (the spiral section of the sleeve in fig. 1 and fig. 2 is not shown, and only the heating element is shown at the corresponding position), after the heating element is arranged in the sleeve, heat conduction materials such as heat conduction silicone grease and the like are filled between the heating element and the spiral section, two ends of the heating element are connected with power wires, and the power wires are respectively arranged in the straight pipe sections of the two sleeves and are led out of the gas-liquid separator from the pipe orifice. The middle part with the built-in heating element and heat-conducting silicone grease is made into a spiral section by adopting a spiral processing technology, and belongs to a mature manufacturing technology; two ends of the spiral section are respectively connected with the straight tube section, and the other end of the straight tube section extends out of the upper shell and is in sealing connection (for example, welding sealing) with the upper shell; and the power line and/or the signal line extend out of the pipe orifice of the straight pipe section of the sleeve and are used for being connected with the electric cabinet, feeding back and controlling, and the power line and the signal line are collectively called as connecting lines.
As shown in fig. 1 and example 1, in some embodiments, the liquid level detection apparatus 100 further includes a first limiting member 7 and a second limiting member 8, the first limiting member 7 and the second limiting member 8 are both fixed to the outer periphery of the sleeve, the first limiting member 7 is located below the floating member 2 to limit the lowest position of the floating member 2 moving downward, and the second limiting member 8 is located above the floating member 2 to limit the highest position of the floating member 2 moving upward. According to the invention, the limit position of the up-and-down movement of the floating piece can be effectively limited through the structure of the first limiting piece and the second limiting piece, the situation that the magnetic switch cannot be controlled due to the fact that the floating piece moves upwards too high and is far away from the magnetic switch is prevented, the situation that the magnetic switch cannot be controlled due to the fact that the floating piece moves downwards too low and is far away from the magnetic switch is also effectively prevented, and the continuous and effective control relation between the floating piece and the magnetic switch is ensured.
The straight pipe section of one sleeve pipe is simultaneously designed to have the function of a floating ball liquid level meter, a magnetic switch is fixedly arranged inside the straight pipe section, and a floating ball of the floating ball liquid level meter is sleeved outside the straight pipe section of the sleeve pipe provided with the magnetic switch. And a snap ring is arranged outside the straight pipe section of the sleeve corresponding to the upper position and/or the lower position of the magnetic switch and used for limiting the movement of the floating ball. The floating ball moves up and down along the straight pipe section of the sleeve under the buoyancy action of liquid, the floating ball rises when the liquid level rises, and the floating ball falls when the liquid level falls, but the floating ball cannot rise or fall continuously under the limitation of the snap ring. The movement of the floating ball generates position change and generates relative position change with the internal magnetic switch, so that the magnetic switch realizes opening and closing actions.
In some embodiments, the height of the switch structure 3 in the vertical direction corresponds to the floating member 2, and the height of the switch structure 3 in the vertical direction is located between the first limiting member 7 and the second limiting member 8. The vertical position of the switch structure of the invention is corresponding to the floating part and is positioned between the first limiting part and the second limiting part, so that the continuous and effective control relation between the floating part and the switch structure can be maintained, and the floating part can always form control on the switch structure through the relation.
As shown in fig. 2 and example 2, in some embodiments, the floating member 2 includes a first floating member 21 and a second floating member 22, the first floating member 21 and the second floating member 22 are disposed at different height positions on the casing 6, and the height of the second floating member 22 is higher than that of the first floating member 21, the switch structure 3 includes a first switch structure and a second switch structure, the first switch structure is disposed corresponding to the first floating member 21 and can be controlled by the height of the first floating member 21 to be turned on or off, and the second switch structure is disposed corresponding to the second floating member 22 and can be controlled by the height of the second floating member 22 to be turned on or off.
The preferable structure form of embodiment 2 of the present invention is that, through the two or more floating structures of the first floating member and the second floating member and the first switch structure and the second switch structure matched with the floating members, a further preferable control profile for the liquid level in the vertical direction can be formed, whether the first floating member and the second switch structure which are arranged below are electrified or not can be controlled, the second floating member and the second switch structure which are arranged above can control the variation of the heating power, and the average speed of the rise of the liquid level can be detected and calculated through the two floating members and the two switch structures, so that the heating power is controlled to vary according to the speed, for example, the rising speed of the liquid level is high, the heating power is increased, the rising speed of the liquid level is reduced, the rising speed of the rise is low, the heating power can be kept unchanged or reduced, and the precise control of the rising speed of the liquid level is ensured.
Fig. 1 is a single float level meter, which can determine the liquid level change in the gas-liquid separator according to the on/off of the magnetic switch, and it is obvious that fig. 2 can also judge the change degree of the liquid level: the magnetic switch A (the structure switch I) corresponding to the floating ball A (the floating piece I) acts to know the liquid level reaching height A, the magnetic switch B (the structure switch II) corresponding to the floating ball B (the floating piece II) acts to know the liquid level reaching height B, and the liquid accumulation rate can be measured according to the change time of the two liquid level heights, so that the heating power, the duration time and the like of the heating body can be controlled.
In some embodiments, when the first floating member 21 detects that the liquid level of the liquid level rises to be higher than a preset height, the first switch structure is turned on, so that the power line 4 can be controlled to be powered on, and the heating body 5 is powered on and heats the liquid; when the second floating piece 22 detects that the liquid level of the liquid level rises to be higher than a second preset height, the second switch structure is switched on, so that the power line 4 can be controlled to increase the current power, and the heating power of the heating body 5 is increased; the second preset height is higher than the first preset height;
when the second floating piece 22 detects that the liquid level of the liquid level is reduced to be lower than the second preset height, the second switch structure is closed, the power line 4 is controlled to reduce the current power, and the heating element 5 reduces the heating power; when the first floating piece 21 detects that the liquid level of the liquid level drops to be lower than the preset height, the first switch structure is closed, the power line 4 is controlled to be powered off, and the heating body 5 is powered off and does not heat the liquid.
The first floating piece, the second floating piece and the first switch structure are matched in an optimal structure, the first floating piece and the second switch structure can control the heating element to be turned on or turned off, and the second floating piece and the second switch structure can control the heating power of the heating element to change, so that the height of the liquid level can be accurately controlled, the liquid refrigerant accumulation caused by the overhigh liquid level can be further prevented, and the starting reliability of the compressor is improved.
In some embodiments, when the liquid level detection apparatus 100 further comprises a first retaining member 7 and a second retaining member 8:
the first limiting part 7 further comprises a first limiting part 71 and a second limiting part 72, the second limiting part 8 further comprises a first second limiting part 81 and a second limiting part 82, the first limiting part 71 is located below the first floating part 21 to limit the lowest position of the first floating part 21 moving downwards, and the first second limiting part 81 is located above the first floating part 21 to limit the highest position of the first floating part 21 moving upwards; the second first limiting part 72 is located below the second floating part 22 to limit the lowest position of the second floating part 22 moving downwards, and the second limiting part 82 is located above the second floating part 22 to limit the highest position of the second floating part 22 moving upwards.
In embodiment 2 of the present invention, it is further preferable that the first limiting member includes two first limiting members and two first limiting members, the first limiting member is located below the first floating member to limit the lower portion of the first floating member, the second limiting member is located below the second floating member to limit the lower portion of the second floating member, the first second limiting member is located above the first floating member to limit the upper portion of the first floating member, and the second limiting member is located above the second floating member to limit the upper portion of the second floating member, so as to ensure that the first floating member and the second floating member respectively maintain continuous and effective control relationship with the first switch structure and the second switch structure.
In some embodiments, a height of the first switch structure in the vertical direction is located between the first stopper 71 and the second stopper 81; the second switch structure is located between the second first limiting member 72 and the second limiting member 82 in the vertical direction. The heights of the first switch structure and the second switch structure are respectively positioned between the first limiting part and the first second limiting part, so that the first switch structure is continuously in magnetic connection with the first floating part, and the second switch structure is continuously in magnetic connection with the second floating part.
In some embodiments, a height difference between the first preset height and the second preset height can be detected and calculated, a time difference between the sequential opening of the first switch structure and the second switch structure can be detected and calculated, and a speed of the liquid level rising can be calculated. According to the invention, through presetting the height difference between the first height and the second height and the opening time difference between the first switch structure and the second switch structure, the rising speed of the liquid level from the first floating part to the second floating part can be effectively calculated, so that the change of the heating power can be effectively controlled according to the rising speed, and the heating power is controlled to rise when the rising speed is higher, so that the liquid level is effectively controlled not to rise too high or reduce as soon as possible, and the liquid level is further ensured not to be too high.
As shown in fig. 3 and example 3, in some embodiments, the switch structure 3 is connected in series with the power line 4, and the power on/off of the power line 4 can be controlled by opening and closing the switch structure 3, so that the power line 4 is powered on when the switch structure 3 is opened and the power line 4 is powered off when the switch structure 3 is closed. This is a preferable connection method between the switch structure and the power line in embodiment 3 of the present invention, that is, the switch structure is disposed in series on the power line, and the on/off of the power line can be directly controlled by opening and closing the switch structure. The floating ball close to the spiral heating body is arranged at a position H1 away from the upper part of the spiral heating body, and the distance between the floating ball at the uppermost part and the floating ball at the bottom is H2. As shown in fig. 3, the magnetic switch may be provided in series on the power supply line of the heating body; as shown in fig. 4, the magnetic switch may be configured to be connected to a signal line individually, and the power line and the signal line are collectively referred to as a connection line.
As shown in fig. 4 and embodiment 4, the switch structure 3 is connected in parallel with the power line 4, the switch structure 3 is electrically connected to a signal line 9, the signal line 9 can be controlled to output different signals by opening and closing the switch structure 3, and the power line 4 is controlled to be powered on and powered off by the signal line 9, so that the power line 4 is powered on when the switch structure 3 is opened, and the power line 4 is powered off when the switch structure 3 is closed. This is a preferable connection method between the switch structure and the power line in embodiment 4 of the present invention, that is, the switch structure is disposed in parallel on the power line, and the on/off of the power line can be controlled by outputting a signal through the signal line and further outputting a signal through the signal line when the switch structure is opened or closed.
In some embodiments, the heating element 5 has a spiral structure, a sleeve part matched with the heating element 5 also has a spiral structure, and a heat conducting material is arranged between the heating element 5 and the sleeve 6; the shell 1 is of a split structure and comprises an upper shell and a lower shell which are connected, and the gas-liquid separator further comprises an air inlet pipe 11 and an air outlet pipe 10. The heating body is preferably of a spiral structure so as to enhance the heating area, and the heat conduction effect between the heating body and the sleeve can be improved by arranging the heat conduction material between the heating body and the sleeve, so that the heating strength of the heating body on liquid is further enhanced, and the liquid level control effect is improved.
The invention also provides an air conditioner which comprises the gas-liquid separator.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention. The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make various improvements and modifications without departing from the technical principle of the present invention, and those improvements and modifications should be also considered as the protection scope of the present invention.
Claims (15)
1. A gas-liquid separator characterized by: the method comprises the following steps:
casing (1), liquid level detection device (100) and heating device (200), casing (1) inside can hold gas and/or liquid, liquid level detection device (100) set up in the inside of casing (1) and can detect the liquid level height of liquid, heating device (200) set up in just can heat liquid in casing (1), and liquid level detection device (100) with heating device (200) are integrated as an organic whole, liquid level detection device (100) can be according to the altitude control of liquid level heating device (200) heat or do not heat.
2. The gas-liquid separator of claim 1, wherein:
the liquid level detection device (100) comprises a floating part (2), the floating part (2) can float on the liquid level and float up and down along with the liquid level, the heating device (200) comprises a switch structure (3), a power line (4) and a heating body (5), the power line (4) is connected with the heating body (5) so as to heat the liquid through the heating body (5), the switch structure (3) can control the power on and off of the power line (4), and the switch structure (3) can be controlled by the floating part (2) to be opened or closed.
3. The gas-liquid separator of claim 2, wherein:
when the floating piece (2) detects that the liquid level of the liquid level rises to be higher than a preset height, the switch structure (3) is switched on, so that the power line (4) can be controlled to be electrified, and the heating body (5) is electrified and heats the liquid; when the floating piece (2) detects that the liquid level of the liquid level drops to be lower than the preset height, the switch structure (3) is closed, the power line (4) can be controlled to be powered off, and the heating body (5) is powered off and does not heat the liquid.
4. The gas-liquid separator of claim 2, wherein:
heating device (200) still includes sleeve pipe (6), power cord (4) with heat-generating body (5) all set up in the inside of sleeve pipe (6), float piece (2) cover is located the outside of sleeve pipe (6), just float piece (2) can slide from top to bottom on sleeve pipe (6).
5. The gas-liquid separator of claim 4, wherein:
the floating piece (2) is a floating ball, the switch structure (3) is a magnetic switch, and the magnetic switch is located inside the sleeve (6).
6. The gas-liquid separator of claim 4, wherein:
the liquid level detection device (100) further comprises a first limiting part (7) and a second limiting part (8), the first limiting part (7) and the second limiting part (8) are fixed on the periphery of the sleeve (6), the first limiting part (7) is located below the floating part (2) to limit the lowest position of the downward movement of the floating part (2), and the second limiting part (8) is located above the floating part (2) to limit the highest position of the upward movement of the floating part (2).
7. The gas-liquid separator of claim 6, wherein:
the height of the switch structure (3) in the vertical direction corresponds to that of the floating part (2), and the height of the switch structure (3) in the vertical direction is located between the first limiting part (7) and the second limiting part (8).
8. The gas-liquid separator of any one of claims 4-7, wherein:
the floating piece (2) comprises a first floating piece (21) and a second floating piece (22), the first floating piece (21) and the second floating piece (22) are arranged at different height positions on the sleeve (6), the height of the second floating piece (22) is higher than that of the first floating piece (21), the switch structure (3) comprises a first switch structure and a second switch structure, the first switch structure and the first floating piece (21) are correspondingly arranged and can be controlled to be turned on or turned off by the height of the first floating piece (21), and the second switch structure and the second floating piece (22) are correspondingly arranged and can be turned on or turned off by the height of the second floating piece (22).
9. The gas-liquid separator of claim 8, wherein:
when the first floating piece (21) detects that the liquid level of the liquid level rises to be higher than a preset height, the first switch structure is switched on, so that the power line (4) can be controlled to be electrified, and the heating body (5) is electrified and heats the liquid; when the second floating piece (22) detects that the liquid level of the liquid level rises to be higher than the second preset height, the second switch structure is switched on, so that the power line (4) can be controlled to increase the current power, and the heating power of the heating body (5) is increased; the second preset height is higher than the first preset height;
when the second floating piece (22) detects that the liquid level of the liquid level is lowered to be lower than the second preset height, the second switch structure is closed, the power line (4) is controlled to reduce the current power, and the heating body (5) reduces the heating power; when the first floating piece (21) detects that the liquid level of the liquid level drops to be lower than the preset height, the first switch structure is closed, the power line (4) is controlled to be powered off, and the heating body (5) is powered off and does not heat the liquid.
10. The gas-liquid separator of claim 8, wherein:
when the liquid level detection device (100) further comprises a first limiting member (7) and a second limiting member (8):
the first limiting part (7) further comprises a first limiting part I (71) and a second limiting part II (72), the second limiting part (8) further comprises a first second limiting part I (81) and a second limiting part II (82), the first limiting part I (71) is located below the first floating part I (21) so as to limit the lowest position of the first floating part I (21) moving downwards, and the second limiting part I (81) is located above the first floating part I (21) so as to limit the highest position of the first floating part I (21) moving upwards; the second first limiting part (72) is located below the second floating part (22) to limit the lowest position of the second floating part (22) moving downwards, and the second limiting part (82) is located above the second floating part (22) to limit the highest position of the second floating part (22) moving upwards.
11. The gas-liquid separator of claim 10, wherein:
the height of the first switch structure in the vertical direction is positioned between the first limiting piece I (71) and the second limiting piece I (81); the height of the second switch structure in the vertical direction is located between the second first limiting part (72) and the second limiting part (82).
12. The gas-liquid separator of claim 9, wherein:
the height difference between the first preset height and the second preset height can be detected and calculated, the time difference of the first switch structure and the second switch structure which are sequentially opened can be detected and calculated, and the liquid level rising speed can be calculated.
13. The gas-liquid separator of any one of claims 2-7, wherein:
the switch structure (3) is connected with the power line (4) in series, and the power on/off of the power line (4) can be controlled through the on/off of the switch structure (3), so that the power line (4) is electrified when the switch structure (3) is opened, and the power line (4) is powered off when the switch structure (3) is closed;
or the switch structure (3) and the power line (4) are arranged in parallel, the switch structure (3) is electrically connected with the signal line (9), the signal line (9) can be controlled to output different signals by switching the switch structure (3), and the power line (4) is controlled to be switched on and off by the signal line (9), so that the power line (4) is powered on when the switch structure (3) is opened, and the power line (4) is powered off when the switch structure (3) is closed.
14. The gas-liquid separator of any one of claims 2-8, wherein:
the heating body (5) is of a spiral structure, the sleeve part matched with the heating body (5) is also of a spiral structure, and a heat conduction material is arranged between the heating body (5) and the sleeve (6); the shell (1) is of a split structure and comprises an upper shell and a lower shell which are connected, and the gas-liquid separator further comprises an air inlet pipe (11) and an air outlet pipe (10).
15. An air conditioner, characterized in that: comprising a gas-liquid separator according to any one of claims 1 to 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211619451.4A CN115790010A (en) | 2022-12-15 | 2022-12-15 | Gas-liquid separator and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211619451.4A CN115790010A (en) | 2022-12-15 | 2022-12-15 | Gas-liquid separator and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115790010A true CN115790010A (en) | 2023-03-14 |
Family
ID=85425302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211619451.4A Pending CN115790010A (en) | 2022-12-15 | 2022-12-15 | Gas-liquid separator and air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115790010A (en) |
Citations (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06109345A (en) * | 1992-09-22 | 1994-04-19 | Daikin Ind Ltd | Gas-liquid separator |
| US6681627B1 (en) * | 2002-09-04 | 2004-01-27 | Young-G Enterprise Corporation | Level sensing safety device functionable in fall-over position |
| JP2007147274A (en) * | 1996-03-28 | 2007-06-14 | Mitsubishi Electric Corp | Refrigerating device |
| JP2008241064A (en) * | 2007-03-26 | 2008-10-09 | Matsushita Electric Ind Co Ltd | Gas-liquid separator for air conditioner |
| KR100967690B1 (en) * | 2010-03-10 | 2010-07-07 | 주식회사 삼원알텍 | Heating apparatus having water level sensing function |
| JP2010243095A (en) * | 2009-04-08 | 2010-10-28 | Mitsubishi Electric Corp | Refrigerating cycle device and gas-liquid separator |
| JP2013096772A (en) * | 2011-10-31 | 2013-05-20 | Mitsubishi Electric Corp | Liquid level detecting device |
| CN103225935A (en) * | 2013-04-22 | 2013-07-31 | 重庆美的通用制冷设备有限公司 | Gas-liquid separator, air source heat recovery system, water chiller and heat pump |
| CN204154042U (en) * | 2014-10-15 | 2015-02-11 | 安徽美芝精密制造有限公司 | Reservoir |
| CN204388979U (en) * | 2014-12-15 | 2015-06-10 | 重庆精科仪表制造有限责任公司 | Electric heating magnetic float level meter |
| CN105674638A (en) * | 2016-01-06 | 2016-06-15 | 广东美的暖通设备有限公司 | Gas-liquid separator, air-conditioning system and control method for preventing liquid returning of compressor |
| CN106288027A (en) * | 2015-05-12 | 2017-01-04 | Tcl空调器(中山)有限公司 | Air-conditioner outdoor unit and the control method of air-conditioner outdoor unit |
| CN205980484U (en) * | 2016-08-25 | 2017-02-22 | 石家庄国祥运输设备有限公司 | Double -deck vapour and liquid separator and have air conditioning system of this separator |
| CN107036299A (en) * | 2017-03-15 | 2017-08-11 | 青岛海尔智能技术研发有限公司 | A kind of solar water heater electrical heating accurate control method |
| CN108168165A (en) * | 2018-02-13 | 2018-06-15 | 天津商业大学 | A kind of fluorine refrigeration system gas-liquid oil eliminator |
| CN109755066A (en) * | 2019-02-28 | 2019-05-14 | 珠海格力电器股份有限公司 | Liquid-level switch and compressor with it |
| KR20190083738A (en) * | 2018-01-05 | 2019-07-15 | 엘지전자 주식회사 | Air conditioner and method for controlling the same |
| CN111412697A (en) * | 2020-03-09 | 2020-07-14 | 珠海格力电器股份有限公司 | Gas-liquid separator, accumulated liquid control method thereof and air conditioner |
| CN111811171A (en) * | 2020-05-29 | 2020-10-23 | 北京中能航科科技有限公司 | Gas-liquid separation control method for megawatt centrifugal low-temperature air source heat pump system |
| CN112138471A (en) * | 2020-09-30 | 2020-12-29 | 蚌埠高科能源装备有限公司 | Double-liquid-level switch gas-liquid separator |
| CN213748663U (en) * | 2020-12-04 | 2021-07-20 | 广州极飞科技股份有限公司 | Liquid level detection device and farmland water supply and drainage system |
| CN114322380A (en) * | 2022-01-10 | 2022-04-12 | 台州龙江化工机械科技有限公司 | Gas-liquid separator and gas-liquid separator |
| CN217979390U (en) * | 2022-08-12 | 2022-12-06 | 杭州卓邦环境设备有限公司 | Defrosting after-gas-liquid separator liquid level control device and swimming pool dehumidification heat pump unit |
-
2022
- 2022-12-15 CN CN202211619451.4A patent/CN115790010A/en active Pending
Patent Citations (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06109345A (en) * | 1992-09-22 | 1994-04-19 | Daikin Ind Ltd | Gas-liquid separator |
| JP2007147274A (en) * | 1996-03-28 | 2007-06-14 | Mitsubishi Electric Corp | Refrigerating device |
| US6681627B1 (en) * | 2002-09-04 | 2004-01-27 | Young-G Enterprise Corporation | Level sensing safety device functionable in fall-over position |
| JP2008241064A (en) * | 2007-03-26 | 2008-10-09 | Matsushita Electric Ind Co Ltd | Gas-liquid separator for air conditioner |
| JP2010243095A (en) * | 2009-04-08 | 2010-10-28 | Mitsubishi Electric Corp | Refrigerating cycle device and gas-liquid separator |
| KR100967690B1 (en) * | 2010-03-10 | 2010-07-07 | 주식회사 삼원알텍 | Heating apparatus having water level sensing function |
| JP2013096772A (en) * | 2011-10-31 | 2013-05-20 | Mitsubishi Electric Corp | Liquid level detecting device |
| CN103225935A (en) * | 2013-04-22 | 2013-07-31 | 重庆美的通用制冷设备有限公司 | Gas-liquid separator, air source heat recovery system, water chiller and heat pump |
| CN204154042U (en) * | 2014-10-15 | 2015-02-11 | 安徽美芝精密制造有限公司 | Reservoir |
| CN204388979U (en) * | 2014-12-15 | 2015-06-10 | 重庆精科仪表制造有限责任公司 | Electric heating magnetic float level meter |
| CN106288027A (en) * | 2015-05-12 | 2017-01-04 | Tcl空调器(中山)有限公司 | Air-conditioner outdoor unit and the control method of air-conditioner outdoor unit |
| CN105674638A (en) * | 2016-01-06 | 2016-06-15 | 广东美的暖通设备有限公司 | Gas-liquid separator, air-conditioning system and control method for preventing liquid returning of compressor |
| CN205980484U (en) * | 2016-08-25 | 2017-02-22 | 石家庄国祥运输设备有限公司 | Double -deck vapour and liquid separator and have air conditioning system of this separator |
| CN107036299A (en) * | 2017-03-15 | 2017-08-11 | 青岛海尔智能技术研发有限公司 | A kind of solar water heater electrical heating accurate control method |
| KR20190083738A (en) * | 2018-01-05 | 2019-07-15 | 엘지전자 주식회사 | Air conditioner and method for controlling the same |
| CN108168165A (en) * | 2018-02-13 | 2018-06-15 | 天津商业大学 | A kind of fluorine refrigeration system gas-liquid oil eliminator |
| CN109755066A (en) * | 2019-02-28 | 2019-05-14 | 珠海格力电器股份有限公司 | Liquid-level switch and compressor with it |
| CN111412697A (en) * | 2020-03-09 | 2020-07-14 | 珠海格力电器股份有限公司 | Gas-liquid separator, accumulated liquid control method thereof and air conditioner |
| CN111811171A (en) * | 2020-05-29 | 2020-10-23 | 北京中能航科科技有限公司 | Gas-liquid separation control method for megawatt centrifugal low-temperature air source heat pump system |
| CN112138471A (en) * | 2020-09-30 | 2020-12-29 | 蚌埠高科能源装备有限公司 | Double-liquid-level switch gas-liquid separator |
| CN213748663U (en) * | 2020-12-04 | 2021-07-20 | 广州极飞科技股份有限公司 | Liquid level detection device and farmland water supply and drainage system |
| CN114322380A (en) * | 2022-01-10 | 2022-04-12 | 台州龙江化工机械科技有限公司 | Gas-liquid separator and gas-liquid separator |
| CN217979390U (en) * | 2022-08-12 | 2022-12-06 | 杭州卓邦环境设备有限公司 | Defrosting after-gas-liquid separator liquid level control device and swimming pool dehumidification heat pump unit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204154042U (en) | Reservoir | |
| CN206310793U (en) | Energy-saving cold-hot integral thermostat machine | |
| CN103900249A (en) | Instant air energy heat-pump water heater and control method thereof | |
| CN2929540Y (en) | Water cooling type integrated outdoor unit of air conditioner | |
| CN115790010A (en) | Gas-liquid separator and air conditioner | |
| CN203980735U (en) | Air-conditioner | |
| CN109813009A (en) | Air-conditioning system and its method for controlling oil return | |
| CN208846772U (en) | A kind of energy-saving cooler | |
| CN115854611A (en) | Refrigerating system and control method thereof | |
| CN203454440U (en) | Cold water set | |
| CN104748462A (en) | Oil and gas separation device and air conditioner system | |
| CN216554974U (en) | Air supply system and refrigerant circulating system for air suspension bearing | |
| CN205980423U (en) | A heat exchanger and heat pump system for heat pump system | |
| CN112524868B (en) | Defrosting structure of refrigeration house system | |
| CN201724472U (en) | Oil return control device of direct-expansion-type ground source heat pump | |
| CN216347210U (en) | Water inlet system of extrusion type ice outlet machine | |
| CN113959116A (en) | Compressor bearing air supply system and air suspension compressor system | |
| CN112944706A (en) | Transport refrigeration unit and control method thereof | |
| CN220689238U (en) | Air cooler | |
| CN219913529U (en) | Fluorine pump compression refrigeration system | |
| CN112032843A (en) | Novel air conditioning device capable of realizing energy conservation and emission reduction | |
| CN201973882U (en) | Integrated heat pump water heater | |
| CN219797566U (en) | Fluorine pump compression refrigeration system | |
| CN203824182U (en) | Refrigerating power regulating device for constant-frequency air-conditioner | |
| CN215892872U (en) | Hot gas defrosting system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |