CN209744764U - double-source heat pump water heating unit system - Google Patents
double-source heat pump water heating unit system Download PDFInfo
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- CN209744764U CN209744764U CN201920441772.7U CN201920441772U CN209744764U CN 209744764 U CN209744764 U CN 209744764U CN 201920441772 U CN201920441772 U CN 201920441772U CN 209744764 U CN209744764 U CN 209744764U
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Abstract
The utility model discloses a double-source heat pump water heater unit system, wherein a tube-shell heat exchanger and a fin heat exchanger are switched by controlling a four-way valve, a first electromagnetic valve and a second electromagnetic valve, and air and water can be selected as heat sources to be matched for switching operation; the water removal mechanism can accelerate the condensate water on the fins to flow downwards under the action of the air deflector after the wind enters the fin heat exchanger, so that the condensate water is prevented from forming a thick water film on the fins, and the heat exchange efficiency of the fin heat exchanger can be improved; the adjusting mechanism can adjust or fix the angle of the air deflector, and simultaneously rotates two screws in the adjusting mechanism, so that the sliding block drives the clamping jaws and the linkage plate to enable the air deflector to rotate, the air deflector is adjusted to be in a horizontal state or an inclined angle according to the amount of condensed water, the obstruction of the air deflector to wind is reduced as much as possible, on the basis of quickly removing the condensed water, the wind quickly passes through the fin heat exchanger, and the heat exchange efficiency is improved.
Description
Technical Field
The utility model relates to a heat pump set field especially relates to a two source heat pump hot water unit systems.
Background
the heat pump hot water unit is an energy-saving environment-friendly hot water supply device which can replace a boiler and is not limited by resources, and green pollution-free cold coal is adopted to absorb heat in air and produce domestic hot water of more than 50 ℃ by the work of a compressor. Traditional air source heat pump hot water unit is applicable to indoor swimming pool, hotel, villa, salon, bath pedicure, mill and farm etc. and needs the place of hot water heat source, and heat source form heat pump can divide into: the heat pump with the single source is poor in environmental adaptability, fins are affected by condensed water during heat exchange to reduce heat exchange efficiency, and a unit is unstable in operation and low in efficiency.
SUMMERY OF THE UTILITY MODEL
the utility model aims to solve the technical problem that a can select air and water to switch the operation for the heat source cooperation is provided, and improve heat exchange efficiency's double-source heat pump hot water unit system.
in order to solve the technical problem, the utility model discloses the technical scheme who takes is: a double-source heat pump water heating unit system comprises a compressor, a high-efficiency tank heat exchanger, a liquid storage tank and a finned heat exchanger which are sequentially connected through pipelines to form a circulating system, wherein the inlet and the outlet of the compressor are connected with four-way valves, the four-way valves are also respectively connected with the high-efficiency tank heat exchanger and the finned heat exchanger, and the finned heat exchanger is connected with a shell and tube heat exchanger in parallel; a first filter, an electronic expansion valve and a second filter are connected between the liquid storage tank and the fin heat exchanger; a first electromagnetic valve is connected to the rear of the outlet of the fin heat exchanger; a second electromagnetic valve is connected in front of the inlet of the shell-and-tube heat exchanger; a gas-liquid separator is connected between the inlet of the compressor and the four-way valve;
The finned heat exchanger comprises a shell, a medium pipe and fins; the whole medium pipe is of a spiral three-dimensional surrounding structure, an outlet pipe and an inlet pipe extend from the upper end and the lower end of the medium pipe respectively, a plurality of fins are transversely sleeved on the medium pipe at intervals, the plurality of fins are fixed by virtue of support rods which are horizontally penetrated, and the support rods comprise two support rods which are vertically arranged; the shell is of a frame structure, the medium pipe is arranged in the shell, and the left side and the right side of the shell are respectively fixed with the two fins on the outer side; the fin heat exchanger also comprises a water removal mechanism for removing condensed water on the fins; the water removing mechanism comprises an air deflector, a linkage plate and an adjusting mechanism; the air guide plates are horizontally arranged between two adjacent fins, a plurality of air guide plates are arranged between the two fins at intervals up and down, and one ends of the air guide plates are connected with the fin rotating shafts; the linkage plate is horizontally arranged at the front side or the rear side of the air deflector of each layer and is fixed with the air deflector; the linkage plate is connected with an adjusting mechanism for adjusting the swinging angle and locking the linkage plate; the adjusting mechanism comprises a screw rod, a sliding block and a clamping jaw, connecting blocks are fixed at four corners of the front end face of the shell, and the upper connecting block and the lower connecting block are connected with the screw rod through bearings and are fixed with the sliding rod; sliding blocks with the same number as the linkage plates are arranged between the upper connecting block and the lower connecting block, each sliding block is in threaded connection with the screw, and the sliding blocks are in sliding connection with the sliding rods; one end of each clamping jaw is connected with the sliding block rotating shaft, the other end of each clamping jaw is provided with a limiting groove, and two ends of each linkage plate are respectively connected in the limiting grooves of the two clamping jaws opposite to each other in the horizontal direction in a sliding mode; the adjusting mechanism further comprises a linkage mechanism for driving the two screw rods to rotate simultaneously.
The further technical scheme is as follows: the linkage mechanism comprises a gear and a toothed belt; the two gears are respectively fixed at the upper ends of the two screw rods, and the toothed belt is connected between the two gears and is in meshing transmission with the gears; and a driving disc is fixed at the top end of any one screw.
the further technical scheme is as follows: the linkage plate is provided with a clamping groove clamped with the air deflectors, and one end of each layer of the air deflectors in the horizontal direction is fixedly arranged in the clamping groove.
the further technical scheme is as follows: the fin is provided with a mounting hole at the position where the medium pipe penetrates through, and the fin is provided with a mounting sleeve which is coaxial with the mounting hole and has the same diameter.
The further technical scheme is as follows: the rear end face of the shell is fixed with a rectifying shell, and rectifying plates in a horizontal state are fixed in the rectifying shell at intervals in the vertical direction.
The further technical scheme is as follows: the rectifying plate and the air guide plate in the horizontal state are in the same horizontal plane.
The further technical scheme is as follows: a first diversion trench is formed in the length direction of the air deflector.
The further technical scheme is as follows: and a second diversion trench is formed in the vertical direction on one side, which is attached to the air deflector, of the inner end of the fin.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
A fin heat exchanger and a shell and tube heat exchanger which are connected in parallel are arranged between the liquid storage tank and the four-way valve, the first electromagnetic valve and the second electromagnetic valve are controlled to switch; the air and the water can be selected as heat sources to be matched and switched to operate, the air is used as the heat source in transition seasons and winter, the water is used as the heat source in summer, and meanwhile, the air-conditioning system has a refrigeration function and provides refrigeration capacity for the central air conditioner;
The fin heat exchanger is provided with a water removal mechanism for removing condensed water on the fins, and the inclined downward flow of wind can accelerate the downward flow of the condensed water on the fins under the action of the air deflector after the wind enters the fin heat exchanger, so that the condensed water is prevented from forming a thick water film on the surfaces of the fins, and the heat exchange efficiency of the fin heat exchanger can be improved;
The linkage plate is connected with an adjusting mechanism used for adjusting the swing angle and locking the linkage plate, the linkage mechanism is used for simultaneously rotating the two screw rods in the adjusting mechanism, all sliding blocks on the screw rods are enabled to ascend or descend, the linkage plate is driven by the clamping jaws to enable the air deflector to rotate, the air deflector can be adjusted to be in a horizontal state or an inclined angle according to the amount of condensed water, the obstruction of the air deflector to wind can be reduced as much as possible, on the basis that the condensed water can be rapidly removed, the wind can rapidly pass through the fin heat exchanger, and the heat exchange efficiency is improved.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of the finned heat exchanger of the present invention;
FIG. 3 is a schematic structural view of a water removal mechanism and an adjustment mechanism of the fin heat exchanger of the present invention;
Fig. 4 is a schematic view of the internal structure of the fin heat exchanger of the present invention;
Fig. 5 is a schematic view of the structure of the air deflector and the fin of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways different from the specific details set forth herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
as shown in fig. 1 to 5, a dual-source heat pump water heater unit system comprises a compressor 1, a high-efficiency tank heat exchanger 2, a liquid storage tank 3 and a fin heat exchanger 4 which are sequentially connected by pipelines to form a circulating system; the inlet and the outlet of the compressor 1 are connected with a four-way valve 5, the four-way valve 5 is also respectively connected with the high-efficiency tank heat exchanger 2 and the finned heat exchanger 4, and the finned heat exchanger 4 is connected with a shell-and-tube heat exchanger 6 in parallel; the liquid storage tank 3 and the fin heat exchanger 4 are connected with a first filter 7, an electronic expansion valve 8 and a second filter 9; a first electromagnetic valve 10 is connected behind the fin heat exchanger 4; a second electromagnetic valve 11 is connected in front of the shell and tube heat exchanger 6; and a gas-liquid separator 12 is connected between the inlet of the compressor 1 and the four-way valve 5.
the medium pipe 42 is formed by two staggered rows of straight pipes and bent pipes connecting the ends of the two staggered rows of straight pipes, and the bent pipes and the straight pipes are welded in a seamless mode.
The working process of the double-source heat pump water heating unit system is as follows: when hot water and cold energy of a central air conditioner are provided in summer, refrigerant discharged from the compressor 1 is a transmission medium of heat energy, high-temperature and high-pressure gas discharged from the compressor 1 enters the shell-tube heat exchanger 6 through the four-way valve 5 to release heat and transfer the heat to domestic water, thereby producing hot water, the high-temperature gas refrigerant is released into low-temperature liquid in the shell and tube heat exchanger 6 and then becomes low-temperature fog-like refrigerant after passing through the second filter 9 and the electronic expansion valve 8, the fog-like refrigerant enters the liquid storage tank 3 through the first filter 7, then the low-temperature fog-like refrigerant enters the high-efficiency tank heat exchanger 2 to absorb the heat of cold energy of the central air conditioner to become gas, thereby generating low-temperature cold energy for central air conditioning, the gas refrigerant enters the compressor 1 after passing through the four-way valve 5 and the gas-liquid separator 12, the domestic hot water and the cold energy for the central air conditioner are produced in a circulating mode, and the first electromagnetic valve 10 is in a closed state in the process.
When hot water is provided in winter, high-temperature and high-pressure gas coming out of the compressor 1 enters the high-efficiency tank heat exchanger 2 through the four-way valve 5 and releases heat, and heat is transferred to domestic water, so that hot water is produced, the high-temperature gas refrigerant releases heat after entering the high-efficiency tank heat exchanger 2 and becomes low-temperature liquid, the low-temperature liquid passes through the liquid storage tank 3, the first filter 7 and the electronic expansion valve 8 and becomes fog-like refrigerant, then enters the fin heat exchanger 4 through the second filter 9, the high-temperature gas refrigerant is obtained after the heat in the air is absorbed by the fin heat exchanger 4, and finally enters the compressor 1 through the four-way valve 5 and the gas-liquid separator 12, so that the domestic hot.
A fin heat exchanger 4 and a shell and tube heat exchanger 6 which are connected in parallel are arranged between the liquid storage tank 3 and the four-way valve 5, air and water can be selected to be matched and switched to operate by controlling the four-way valve 5, the first electromagnetic valve 10 and the second electromagnetic valve 11, air and water are used as heat sources in transition seasons and winter, water is used as a heat source in summer, and meanwhile, the air-cooled shell and tube heat exchanger has a refrigeration function and provides refrigeration capacity for a central air conditioner.
the finned heat exchanger 4 comprises a housing 41, medium tubes 42 and fins 43; the whole medium pipe 42 is of a spiral three-dimensional surrounding structure, an outlet pipe 44 and an inlet pipe 45 extend from the upper end and the lower end of the medium pipe respectively, a plurality of fins 43 are transversely sleeved on the medium pipe 42 at intervals, the plurality of fins 43 are fixed by virtue of a support rod 46 which is horizontally penetrated, and the support rod 46 comprises two support rods which are vertically arranged; the shell 41 is of a frame structure, the medium pipe 42 is arranged in the shell 41, and the left side and the right side of the shell 41 are respectively fixed with the two fins 43 on the outer side; the fin heat exchanger 4 further includes a water removal mechanism 47 for removing condensed water on the fins 43.
The two fins 43 on the outer side are used for fixing the shell 41, the support rod 46 is used for fixing the fins 43, a low-temperature liquid refrigerant enters from the inlet pipe 45 of the medium pipe 42, the low-temperature liquid refrigerant is gasified into a high-temperature gas refrigerant after absorbing the temperature of air through the fins 43 and then is discharged from the outlet pipe 44 of the medium pipe 42, the medium pipe 42 is of a spiral three-dimensional surrounding structure and penetrates through the fins 43, the fin heat exchanger 4 needs to be matched with a fan for use, the fan drives the air to continuously enter from the front end of the fin heat exchanger 4, heat in the air is absorbed by the fins 43 in the process and is finally transmitted to the refrigerant in the medium pipe 42, water vapor in the air generates condensate when encountering the low-temperature fins 43, the air deflector 401 in the dewatering mechanism 47 guides the air to an oblique downward direction, the condensate on the fins 43 flows downwards rapidly under the action of the air flowing process and gravity, the adjusting mechanism 403, facilitating adjustment of the air deflection plates 401.
The fin heat exchanger 4 is provided with a dewatering mechanism 47 for removing condensed water on the fins 43, and after the wind enters the fin heat exchanger 4, the wind flows downwards in an inclined direction under the action of the air deflector 401, so that the condensed water on the fins 43 can be accelerated to flow downwards, a thick water film on the surfaces of the fins 43 is avoided, and the heat exchange efficiency of the fin heat exchanger 4 can be improved.
The adjusting mechanism 403 comprises a screw 404, a slide rod 405, a slide block 406 and a jaw 407, wherein connecting blocks 408 are fixed at four corners of the front end surface of the housing 41, and the upper and lower connecting blocks 408 are connected with the screw 404 through bearings and fixed with the slide rod 405; the same number of sliding blocks 406 as the linkage plates 402 are arranged between the upper connecting block 408 and the lower connecting block 408, each sliding block 406 is in threaded connection with the screw 404, and the sliding blocks 406 are also in sliding connection with the sliding rods 405; one end of each jaw 407 is connected with the rotating shaft of the sliding block 406, the other end of each jaw 407 is provided with a limiting groove 409, and two ends of the linkage plate 402 are respectively connected in the limiting grooves 409 of the two jaws 407 opposite to each other in the horizontal direction in a sliding manner; the adjustment mechanism 403 further comprises a linkage 410 for driving the two screws 404 to rotate simultaneously.
By simultaneously rotating the two screw rods 404 through the linkage mechanism 410, all the sliding blocks 406 are simultaneously lifted or lowered under the action of the screw rods 404 and the sliding rods 405, the limiting grooves 409 at one ends of the claws 407 are slidably connected with the linkage plate 402, the claws 407 drive all the air deflectors 401 to rotate through the linkage plate 402 in the lifting or lowering process of the sliding blocks 406, and the connecting parts of the claws 407 and the sliding blocks 406 also rotate in the rotating process of the air deflectors 401.
The linkage plate 402 is connected with an adjusting mechanism 403 for adjusting the swing angle and locking the linkage plate, two screws 404 in the adjusting mechanism 403 are simultaneously rotated through the linkage mechanism 410, all sliding blocks 406 on the screws 404 are enabled to ascend or descend, the linkage plate 402 is driven through the claws 407 to enable the air deflector 401 to rotate, the air deflector 401 can be adjusted to be in a horizontal state or an inclined state according to the amount of condensed water, the obstruction of the air deflector 401 to wind can be reduced as much as possible, on the basis that the condensed water can be rapidly removed, the wind can rapidly pass through the fin heat exchanger 4, and the heat exchange efficiency is improved.
The linkage 410 includes a gear 411 and a toothed belt 412; the two gears 411 are respectively fixed at the upper ends of the two screws 404, and the toothed belt 412 is connected between the two gears 411 and is in meshing transmission with the gears 411; a driving disk 413 is fixed at the top end of any one screw rod 404.
Through the transmission of gear 411 and toothed belt 412, can make two screw rods 404 rotate simultaneously when rotating driving disc 413 to guarantee to adjust all aviation baffles 401's angle simultaneously, the adjustment process is convenient stable.
The linkage plate 402 is provided with a clamping groove 414 clamped with the air deflectors 401, one end of each layer of the air deflectors 401 in the horizontal direction is fixedly arranged in the clamping groove 414, and the linkage plate 402 is fixed with the air deflectors 401 through the clamping groove 414, so that the linkage plate is convenient to fix and is firmly connected.
The fin 43 has a mounting hole 415 at a position through which the medium pipe 42 passes, and the fin 43 has a mounting boss 416 coaxial with and having the same diameter as the mounting hole 415.
The installation holes 415 are arranged to facilitate the medium tubes 42 to penetrate through the fins 43, and the installation sleeves 416 can increase the contact area and stability of the fins 43 and the medium tubes 42, so as to ensure the heat exchange efficiency.
The rear end face of the shell 41 is fixed with a rectifying shell 417, a rectifying plate 418 in a horizontal state is fixed in the rectifying shell 417 at intervals in the vertical direction, the fin heat exchanger 4 is usually connected with a pipeline, the wind deflector 401 changes the wind direction, so that the time of air in the pipeline is prolonged, the rectifying plate 418 can guide wind to the original direction to accelerate the time of air passing through the fin heat exchanger 4, and the heat exchange efficiency is improved.
The rectifying plate 418 and the air guide plate 401 in the horizontal state are in the same horizontal plane, the air guide plate 401 is adjusted to be in the horizontal state when less condensed water exists, and the rectifying plate 418 and the air guide plate 401 are flush, so that the wind resistance can be further reduced, the air flow can rapidly pass through the fin heat exchanger 4, and the heat exchange efficiency is improved.
The length direction of the air deflector 401 is provided with a first guide groove 419, and the vertical direction of one side of the inner end of the fin 43, which is attached to the air deflector 401, is provided with a second guide groove 420, so that condensed water flowing on the air deflector 401 can quickly flow to the fin 43 and the condensed water on the fin 43 can quickly flow to the lower end, and the heat exchange efficiency is prevented from being reduced due to the accumulation of the condensed water.
The above is only the preferred embodiment of the present invention, and any person can make some simple modifications, deformations and equivalent replacements according to the present invention, all fall into the protection scope of the present invention.
Claims (8)
1. a double-source heat pump water heating unit system is characterized in that: comprises a compressor (1), a high-efficiency tank heat exchanger (2), a liquid storage tank (3) and a fin heat exchanger (4) which are sequentially connected through pipelines to form a circulating system; the inlet and the outlet of the compressor (1) are connected with a four-way valve (5), and the four-way valve (5) is also respectively connected with the high-efficiency tank heat exchanger (2) and the fin heat exchanger (4); the fin heat exchanger (4) is connected with a shell and tube heat exchanger (6) in parallel; a first filter (7), an electronic expansion valve (8) and a second filter (9) are connected between the liquid storage tank (3) and the fin heat exchanger (4); a first electromagnetic valve (10) is connected to the rear part of the outlet of the fin heat exchanger (4); a second electromagnetic valve (11) is connected in front of the inlet of the shell-and-tube heat exchanger (6); a gas-liquid separator (12) is connected between the inlet of the compressor (1) and the four-way valve (5);
The finned heat exchanger (4) comprises a shell (41), a medium pipe (42) and fins (43); the whole medium pipe (42) is of a spiral three-dimensional surrounding structure, an outlet pipe (44) and an inlet pipe (45) extend from the upper end and the lower end of the medium pipe respectively, a plurality of fins (43) are transversely sleeved on the medium pipe (42) at intervals, the fins (43) are fixed by virtue of a support rod (46) which is horizontally penetrated, and the support rod (46) comprises two support rods which are vertically arranged; the shell (41) is of a frame structure, the medium pipe (42) is arranged in the shell (41), and the left side and the right side of the shell (41) are respectively fixed with the two fins (43) on the outer side; the fin heat exchanger (4) also comprises a water removal mechanism (47) for removing condensed water on the fins (43);
The water removal mechanism (47) comprises an air deflector (401), a linkage plate (402) and an adjusting mechanism (403); the air guide plate (401) is horizontally arranged between two adjacent fins (43), a plurality of air guide plates (401) are arranged between the two fins (43) at intervals up and down, and one end of each air guide plate (401) is connected with the fin (43) through a rotating shaft; the linkage plate (402) is horizontally arranged at the front or rear side of the air deflector (401) of each layer and is fixed with the air deflector (401); the linkage plate (402) is connected with an adjusting mechanism (403) for adjusting the swinging angle and locking;
The adjusting mechanism (403) comprises a screw rod (404), a sliding rod (405), a sliding block (406) and a clamping jaw (407), connecting blocks (408) are fixed at four corners of the front end face of the shell (41), and the upper connecting block (408) and the lower connecting block (408) are connected with the screw rod (404) through bearings and are fixed with the sliding rod (405); sliding blocks (406) with the same number as the linkage plates (402) are arranged between the upper connecting block (408) and the lower connecting block (408), each sliding block (406) is in threaded connection with the screw (404), and the sliding blocks (406) are in sliding connection with the sliding rods (405); one end of each jaw (407) is connected with a rotating shaft of the sliding block (406), the other end of each jaw is provided with a limiting groove (409), and two ends of the linkage plate (402) are respectively connected in the limiting grooves (409) of the two jaws (407) opposite to each other in the horizontal direction in a sliding manner; the adjusting mechanism (403) also comprises a linkage mechanism (410) for driving the two screw rods (404) to rotate simultaneously.
2. The dual source heat pump water heater system of claim 1, wherein: the linkage mechanism (410) comprises a gear (411) and a toothed belt (412); the two gears (411) are respectively fixed at the upper ends of the two screws (404), and the toothed belt (412) is connected between the two gears (411) and is in meshed transmission with the gears (411); a driving disc (413) is fixed at the top end of any one screw (404).
3. The dual source heat pump water heater system of claim 1, wherein: the linkage plate (402) is provided with a clamping groove (414) clamped with the air deflectors (401), and one end of each layer of the air deflectors (401) in the horizontal direction is fixedly arranged in the clamping groove (414).
4. the dual source heat pump water heater system of claim 1, wherein: the fin (43) is provided with a mounting hole (415) at the position where the medium pipe (42) penetrates through, and the fin (43) is provided with a mounting sleeve (416) which is coaxial with the mounting hole (415) and has the same diameter.
5. The dual source heat pump water heater system of claim 1, wherein: a rectifying shell (417) is fixed on the rear end face of the outer shell (41), and rectifying plates (418) in a horizontal state are fixed in the rectifying shell (417) at intervals in the vertical direction.
6. The dual source heat pump water heater system of claim 5, wherein: the rectifying plate (418) and the air guide plate (401) in the horizontal state are in the same horizontal plane.
7. The dual source heat pump water heater system of claim 1, wherein: a first diversion trench (419) is formed in the length direction of the air deflector (401).
8. The dual source heat pump water heater system of claim 1 or 7, wherein: and a second diversion trench (420) is formed in the vertical direction on one side, attached to the air deflector (401), of the inner end of the fin (43).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920441772.7U CN209744764U (en) | 2019-04-03 | 2019-04-03 | double-source heat pump water heating unit system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920441772.7U CN209744764U (en) | 2019-04-03 | 2019-04-03 | double-source heat pump water heating unit system |
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| CN209744764U true CN209744764U (en) | 2019-12-06 |
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| CN201920441772.7U Active CN209744764U (en) | 2019-04-03 | 2019-04-03 | double-source heat pump water heating unit system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113028702A (en) * | 2021-03-04 | 2021-06-25 | 海信容声(广东)冷柜有限公司 | Refrigerating equipment |
| CN113028703A (en) * | 2021-03-04 | 2021-06-25 | 海信容声(广东)冷柜有限公司 | Refrigerating equipment |
-
2019
- 2019-04-03 CN CN201920441772.7U patent/CN209744764U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113028702A (en) * | 2021-03-04 | 2021-06-25 | 海信容声(广东)冷柜有限公司 | Refrigerating equipment |
| CN113028703A (en) * | 2021-03-04 | 2021-06-25 | 海信容声(广东)冷柜有限公司 | Refrigerating equipment |
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