CN107606719A - A kind of integral multifunctional Free-frost heat exchanger - Google Patents
A kind of integral multifunctional Free-frost heat exchanger Download PDFInfo
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- CN107606719A CN107606719A CN201711021859.0A CN201711021859A CN107606719A CN 107606719 A CN107606719 A CN 107606719A CN 201711021859 A CN201711021859 A CN 201711021859A CN 107606719 A CN107606719 A CN 107606719A
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Abstract
The invention discloses a kind of integral multifunctional Free-frost heat exchanger, including casing and the evaporator, the air-cooler that are installed in casing, casing are provided with into and out of air channel；The microporosity separator being longitudinally arranged is provided with casing, casing is separated into left and right compartment, evaporator and air-cooler are installed in right compartment；Air inlet duct connects the left compartment of casing, dehydrating unit is provided with left compartment, and be equipped with regneration of adsorbent material device；Regneration of adsorbent material device includes the auxiliary heat pipe and Electric air valve for connecting the vacuum-pumping pipeline system of left compartment and being arranged in left compartment；Auxiliary heat pipe be connected to by condenser, choke valve and the evaporator and compression mechanism into refrigeration system in, be placed between compressor and condenser；The evaporator uses the spiral horizontal fin formula finned tube of electromagnetism enhanced heat exchange;Simple in construction, environmental protection and energy saving of the invention, by integrating the dehumidifying of sorbing material and regeneration function in dehydrating unit, realize heat exchanger uninterrupted Effec-tive Function under frostless effect.
Description
Technical field
The present invention relates to a kind of heat exchanger, especially a kind of integral multifunctional Free-frost heat exchanger.
Background technology
Currently, heat exchanger is a kind of equipment to conduct heat for its main process or purpose, in dynamic power machine, metallurgy, HVAC
Application in the field such as air-conditioning and petrochemical industry is extremely widespread, wherein being most widely used with finned tube exchanger, in chemical industry
More than 90% cooling load undertakes by the heat exchanger of the form in industry.
When evaporator is applied in refrigeration systems, because refrigerant temperature is low, ambient temperature and humidity is higher, then evaporator
Surface easily condenses, and when the reduction of evaporator surface constant temperature, then heat exchanger tube and fin can be caused to form frost, the phenomenon
It is relatively conventional in Food Freezing and Cold Storage and field of air conditioning.Either condensation or frosting, it will all reduce the heat-exchange performance of evaporator
Can, frost layer not only increases heat exchanged thermoresistance, and condensation phase change latent heat can consume substantial amounts of cold, increases the energy consumption of system, because
Frostless heat transfer technology is significant under this defrosting in time or exploitation worst cold case.
More ripe Defrost technology has now：Electric heated defrosting, hot gas bypass defrosting, the hot fluorine defrosting of four-way commutation, heat
Water spray defrosts and mechanically defrosting etc..However, above-mentioned Defrost mode common drawback is can not to meet normally to make in defrosting
Cold operation, also part Defrost method can discharge extra heat into cold, so as to influence the Temperature and Humidity Control of cold.With this
Meanwhile in field of air conditioning, humid air needs to first pass through dehydrating unit to realize reduction air-conditioning condensation before entering evaporator
May, but air conditioner dehumidification device general structure is complicated, bulky, and the sorbing material that dehumidifies is non-renewable or needs additionally
Thermal source etc. limits.Therefore, a kind of Free-frost heat exchanger simple in construction, energy consumption is low is developed, avoids the moisture in humid air from evaporating
The frosting of device surface condensation could fundamentally solve the above problems.
The content of the invention
Present invention aim to provide a kind of integral multifunctional Free-frost heat exchanger, this heat exchanger structure is simple,
Energy consumption is low, and the moisture that effectively prevent in humid air condenses frosting in evaporator surface.
The present invention concrete scheme be：A kind of integral multifunctional Free-frost heat exchanger, including casing and be installed in casing
Evaporator, air-cooler, casing is provided with into and out of air channel；It is characterized in that：Be provided with the casing micropore that is longitudinally arranged every
Casing is separated into left and right compartment by plate, microporosity separator, and the evaporator and air-cooler are installed in right compartment；The air inlet duct
The left compartment of casing is connected, the dehydrating unit that dehumidification treatments are carried out to the humid air being passed through in casing is provided with left compartment, and
It is equipped with the regneration of adsorbent material device for carrying out regeneration to sorbing material in dehydrating unit；Regneration of adsorbent material device
Including connecting the vacuum-pumping pipeline system of left compartment and being sequentially arranged in dehydrating unit and microporosity separator in left compartment from left to right
Between auxiliary heat pipe and Electric air valve；The auxiliary heat pipe is connected to by condenser, choke valve and the evaporator and compressor
In the refrigeration system of composition, it is placed between compressor and condenser；The evaporator is horizontal using the spiral of electromagnetism enhanced heat exchange
Wing formula finned tube.
Heretofore described air inlet duct, dehydrating unit and regneration of adsorbent material device are respectively provided with two sets；A left side for the casing
Horizontal baffle is provided with compartment, the left compartment in horizontal baffle the upper side and lower side correspondingly installs a set of air inlet duct, dehumidifying dress
Put with regneration of adsorbent material device, it is every set air inlet duct and regneration of adsorbent material device vacuum-pumping pipeline system in be equipped with control
Valve processed, the regeneration for removing wet trade and downside regneration of adsorbent material device for realizing dehydrating unit on the upside of left compartment by control valve are made
Industry works simultaneously, and with this alternate run.
Heretofore described finned tube includes heat exchanger tube and the horizontal helical fin plunderred in heat exchange pipe outer wall；The heat exchanger tube
It is made with helical fin of non-magnet material；The cross section structure triangular in shape of helical fin, and by the first fin and
Two fins are welded along its spiral shape arragement direction and formed；The spiral arranged along its spiral shape arragement direction is provided with helical fin
Coil, two lead ends of spiral winding correspondingly connect the adjustable voltage-stabilized power supply of output current；The inner chamber of helical fin with
Heat conductive silica gel is filled with the gap that spiral winding is formed.
Heretofore described heat exchanger tube uses circular copper pipe；First fin and the second fin use aluminum material system
Into；The spiral winding uses enameled wire loop.
A kind of spiral horizontal fin formula finned tube using electromagnetism enhanced heat exchange, including heat exchanger tube and horizontal plunder in heat exchanger tube
Helical fin on outer wall, it is characterized in that：The heat exchanger tube and helical fin are made of non-magnet material；Helical fin
Cross section structure triangular in shape, and be welded and formed along its spiral shape arragement direction by the first fin and the second fin；In spiral wing
The spiral winding arranged along its spiral shape arragement direction is provided with piece, two lead ends of spiral winding correspondingly connect output current
Adjustable voltage-stabilized power supply；Heat conductive silica gel is filled with the gap that the inner chamber of helical fin and spiral winding are formed.
Heretofore described heat exchanger tube uses circular copper pipe；First fin and the second fin use aluminum material system
Into；The spiral winding uses enameled wire loop.
Heretofore described voltage-stabilized power supply to the current type that spiral winding exports be constant current, alternating current or pulse
Electric current.
Beneficial effects of the present invention are as follows：
(1) present invention is simple in construction, ingenious in design, real by integrating the dehumidifying of sorbing material and regeneration function in dehydrating unit
Heat exchanger uninterrupted Effec-tive Function under frostless effect is showed；
(2) regneration of adsorbent material device during sorbing material progress regeneration, efficiently utilizes in dehydrating unit in the present invention
The exhaust heat of compressor, effectively increase the refrigeration performance of energy utilization rate and system；
(3) finned tube is based on electromagnetism enhanced heat exchange theory in the present invention, in actual production, by adjusting voltage-stabilized power supply to spiral
Coil exports different types of electric current, realizes different fluid horizontal fin heat exchanger under various heat exchange pattern and reaches optimal electromagnetism
Enhanced heat exchange technique, available for the uniform defrosting of heat exchanger, defrosting efficiency can be effectively improved, plays the effect of energy-conservation；
(4) present invention is additionally operable to realize sterilization by the magnetic field of suitable intensity caused by finned tube, so as to effectively inhibit heat exchange
The formation of biological dirt on device.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the mounting structure schematic diagram of auxiliary heat pipe in refrigeration systems in the present invention；
Fig. 3 is that the present invention carries out removing wet trade on the upside of horizontal baffle, carries out regenerating the work signal of operation on the downside of horizontal baffle
Figure；
Fig. 4 is that the present invention carries out removing wet trade on the downside of horizontal baffle, carries out regenerating the work signal of operation on the upside of horizontal baffle
Figure；
Fig. 5 is the structural representation of finned tube in the present invention；
Fig. 6 is the cross-sectional view of finned tube in the present invention.
In figure：1-casing, 2-evaporator, 3-air-cooler, 4-air inlet duct, the air inlet ducts of 4a-first, 4b-the second enter
Air channel, 5-exhaust passage, 6-microporosity separator, 7-left compartment, 8-right compartment, 9-horizontal baffle, the 10-the first control valve,
11-the second control valve, the 12-the first dehumidifying adsorbent, the 13-the second dehumidifying adsorbent, the 14-the first auxiliary heat pipe, 15-the second
Auxiliary heat pipe, the 16-the first Electric air valve, the 17-the second Electric air valve, the 18-the first vacuum-pumping pipeline, the 19-the second vacuum-pumping tube
Road, the 20-the three control valve, the 21-the four control valve, 22-vavuum pump, 23-condenser, 24-choke valve, 25-compressor,
26-the five control valve, the 27-the six control valve, 28-heat exchanger tube, 29-helical fin, the fins of 29a-first, 29b-the second
Fin, 30-spiral winding, 31-voltage-stabilized power supply, 32-heat conductive silica gel.
Embodiment
Embodiment 1
Referring to Fig. 1, a kind of integral multifunctional Free-frost heat exchanger, including casing 1 and the evaporator 2, the cold wind that are installed in casing 1
Machine 3, casing 1 are provided with air inlet duct 4, exhaust passage 5；The microporosity separator 6 being longitudinally arranged is provided with the casing 1, microporosity separator 6 will
Casing 1 is separated into left compartment 7, right compartment 8, and the evaporator 2 and air-cooler 3 are installed in right compartment 8；Thus, a left side for casing 1
Compartment 7 has reached the effect of plenum chamber, and under the suction function of air-cooler 3, the left and right sides of microporosity separator 6 forms pressure difference, it is left every
Between gas in 7 can be entered to uniformly across microporosity separator 6 in right compartment 8, and fully contacted with evaporator 2, then cold
Discharged in the presence of blower fan 3 from exhaust passage 5, it is achieved thereby that the effect of optimization heat exchange.
The air inlet duct 4 connects the left compartment 7 of casing, is provided with left compartment 7 and the humid air being passed through in casing 1 is carried out
The dehydrating unit of dehumidification treatments, and it is equipped with the regneration of adsorbent material for carrying out regeneration to sorbing material in dehydrating unit
Device；The air inlet duct 4, dehydrating unit and regneration of adsorbent material device are respectively provided with two sets；It is provided with the left compartment 7 of casing 1
Horizontal baffle 9, left compartment 7 corresponding installation a set of air inlet duct 4, dehydrating unit and the suction in the upper side and lower side of horizontal baffle 9
Enclosure material regenerating unit；Regneration of adsorbent material device includes connecting the vacuum-pumping pipeline system of left compartment 7 and from left to right successively
The auxiliary heat pipe and Electric air valve being arranged in left compartment 7 between dehydrating unit and microporosity separator 6.In every set air inlet duct 4 and absorption
Control valve is equipped with the vacuum-pumping pipeline system of material regeneration device, the left upside dehydrating unit of compartment 7 is realized by control valve
Work simultaneously except the regeneration operation of wet trade and downside regneration of adsorbent material device, and with this alternate run.It should be understood that
It is that, when air inlet duct 4, dehydrating unit and regneration of adsorbent material device only set a set of, dehydrating unit removes wet trade and absorption
Regeneration operation of the material regeneration device to dehydrating unit can not be carried out simultaneously, can only carry out alternately operating, this alternately operating
Mode, although being decreased for two sets of dehydrating units and the dehumidification rate of regneration of adsorbent material device operation simultaneously,
But also ensure that heat exchanger uninterrupted Effec-tive Function under frostless effect.
As shown in Figure 1, two sets of air inlet ducts 4 are respectively labeled as the first air inlet duct 4a and the second air inlet duct 4b, in the first air intake
First control valve 10 is housed on road 4a, the second control valve 11 is housed on the second air inlet duct 4b；Two sets of dehydrating units are respectively adopted and set
Put the first dehumidifying dehumidifying adsorbent 13 of adsorbent 12 and second in horizontal baffle both sides about 9；Two sets of regneration of adsorbent material dresses
Put the first auxiliary heat pipe 14, the first Electric air valve 16 including being arranged on the upside of horizontal baffle 9, with the upside of horizontal baffle 9 it is left every
Between 7 the first vacuum-pumping pipelines 18 being connected, be arranged on the second auxiliary heat pipe 15, the second Electric air valve 17 of the downside of horizontal baffle 9,
And the second vacuum-pumping pipeline 19 being connected with the left compartment 7 of the downside of horizontal baffle 9, wherein in the first vacuum-pumping pipeline 18 and the
Corresponding in two vacuum-pumping pipelines 19 that the 3rd control valve 20 and the 4th control valve 21 are housed, the first vacuum-pumping pipeline 18 and second are taken out very
The output end on blank pipe road 19 is connected, and vavuum pump 22 is configured with pipeline.
Referring to Fig. 2, the first auxiliary 14 and second auxiliary heat pipe 15 of heat pipe is connected in parallel to by condenser 23, the and of choke valve 24
In the refrigeration system that the evaporator 2 and compressor 25 are formed；The import of the first auxiliary 14 and second auxiliary heat pipe 15 of heat pipe
It is all connected with the exhaust outlet of compressor 25, the import of the outlet connection condenser 23 of the first auxiliary 14 and second auxiliary heat pipe 15 of heat pipe；
The exhaust outlet of compressor 25 controls to corresponding on the pipeline of the entrance point of the first auxiliary 14 and second auxiliary heat pipe 15 of heat pipe equipped with the 5th
The control valve 27 of valve 26 and the 6th；First control valve 10, the second control valve 11, the 3rd control valve 20, the 4th control valve 21,
Five control valves 26 and the 6th control valve 27 use magnetic valve, and the 5th control valve 26 and the 6th control valve 27 can also use threeway
Valve replaces.
The evaporator 2 uses the spiral horizontal fin formula finned tube of electromagnetism enhanced heat exchange.
The operation principle of the present invention is as follows：
Referring to Fig. 3, carry out in the upside of horizontal baffle 9 remove wet trade the figure shows heat exchanger, while in the progress of the downside of horizontal baffle 9
Regenerate operation.In this mode, the first control valve 10 and the 4th control valve 21 are opened；Second control valve 11 and the 3rd control valve 20
Close；First Electric air valve 16 is opened, and the second Electric air valve 17 is closed；In the presence of air-cooler 3, cold humid air is by first
Air inlet duct 4a enters heat exchanger, the then fast decline of humid air water capacity after the first dehumidifying adsorbent 12, and ensure that it is being passed through
Without dew condensation phenomenon when crossing cryogenic vaporizer 2.First Electric air valve 16 water conservancy diversion of the dry air Jing Guo opening after dehumidifying
Effect enters plenum chamber.Now, the 5th control valve 26 on the first auxiliary place pipeline of heat pipe 14 is closed, where the second auxiliary heat pipe 15
The 6th control valve 27 on pipeline is opened, and high temperature refrigerant flows through the second auxiliary heat pipe 15；Then in the optimization airflow group of microporosity separator 6
Microporosity separator 6 is flowed uniformly across under the effect of knitting and with the 2 abundant contact heat-exchanging of evaporator in right compartment 8, the cold air after heat exchange
Finally enter cold under the effect of air-cooler 3.
At the same time, what is synchronously carried out with dehumidifying is the regenerative process of the dehumidifying adsorbent 13 of heat exchanger second.Now second
Dehumidifying adsorbent 13 be in saturation state, because high temperature refrigerant flows through the second auxiliary heat pipe 15 release heat, now closes the
Two Electric air valves 17, to avoid hot gas from scattering and disappearing, then the moisture in the second dehumidifying adsorbent 13 is brought rapidly up.Open vavuum pump
22, then because space pressure reduces rapidly, high-temperature water split pole easily vaporizes, in the presence of vavuum pump 22, the vapor quilt of high temperature
Heat exchanger is discharged to cold outside.Moisture vaporization needs to absorb heat, therefore the second auxiliary heat pipe 15 can be cooled, so as to improve
The performance of refrigeration system.
Referring to Fig. 4, carry out in the downside of horizontal baffle 9 remove wet trade the figure shows heat exchanger, while on the upside of horizontal baffle 9
Carry out regeneration operation.After the second dehumidifying adsorbent 13 regenerates, to improve the dehumidifying effect of heat exchanger, the first control valve should be closed
10 and the 4th control valve 21；Open the second control valve 11 and the 3rd control valve 20；Simultaneously close off the second auxiliary place pipeline of heat pipe 15
On the 6th control valve 27, open the first auxiliary place pipeline of heat pipe 14 on the 5th control valve 26, now high temperature refrigerant enter
First auxiliary heat pipe 14；In addition, also to open the second Electric air valve 17, the first Electric air valve 16 is closed.Now, cold humid air can
Heat exchanger is entered by the second air inlet duct 4b, the then fast decline of humid air water capacity after the second dehumidifying adsorbent 13, and ensuring
It is when by heat exchanger 2 without dew condensation phenomenon.Second Electric air valve 17 of the dry air Jing Guo opening after dehumidifying is led
Stream effect enters plenum chamber, under the optimization airflow function of organization of microporosity separator 6, flow uniformly across microporosity separator 6 and with evaporator 2
Abundant contact heat-exchanging, the cold air after heat exchange finally enter cold under the effect of air-cooler 3.
At the same time, what is synchronously carried out with dehumidifying is the regenerative process of the first dehumidifying adsorbent 12 in heat exchanger.Due to height
Warm cold-producing medium stream discharges heat through the first auxiliary heat pipe 14, then the moisture in the first dehumidifying adsorbent 12 is brought rapidly up.Open vacuum
Pump 22, then because space pressure reduces rapidly, the high-temperature water split pole easily vaporization in the first dehumidifying adsorbent 12 is discharged heat exchanger.
From the foregoing, it will be observed that the switch mode of the dehumidifying and regeneration for the adsorbent that dehumidified in heat exchanger, can be by controlling respective line
On control valve and two Electric air valves open and-shut mode come easily realize.Exchange-column shift on different mode needs to pass through tool
The experiment of body determines, is criterion setting optimum switching time interval to ensure heat exchanger without condensation, frost.
Embodiment 2
Referring to Fig. 5, Fig. 6, finned tube described in the present embodiment includes heat exchanger tube 28 and the horizontal spiral plunderred on the outer wall of heat exchanger tube 28
Fin 29；The heat exchanger tube 28 and helical fin 29 are made of non-magnet material；The cross section of helical fin 29 is in triangle
Shape structure, and be welded and formed along its spiral shape arragement direction by the first fin 29a and the second fin 29b；In helical fin 29
Provided with the spiral winding 30 arranged along its spiral shape arragement direction, two lead ends of spiral winding 30 correspondingly connect output current
Adjustable voltage-stabilized power supply 31；Heat conductive silica gel is filled with the gap that the inner chamber of helical fin 29 and spiral winding 30 are formed
32, heat conductive silica gel 32 plays a part of heat conduction to spiral winding 30, sealing is fixed and insulate.
28 pipes that exchanged heat described in the present embodiment use circular copper pipe；The first fin 29a and the second fin 29b are used
Aluminum material is made；The spiral winding 30 uses enameled wire loop.
The current type that voltage-stabilized power supply 31 described in the present embodiment exports to spiral winding 30 is constant current, alternating current
Or pulse current.As shown in fig. 6, according to the transmission direction of electric current in spiral winding 30, the helix current in spiral winding 30 can
The parameter such as magnetic induction line, magnetic density, frequency and the waveform in its magnetic field axially in parallel with it is produced in heat exchanger tube 28 can to lead to
Cross and change the electric current that voltage-stabilized power supply 31 exports and adjust, to meet that different magnetic field-intensifications conducts heat technological requirement, if fluid is magnetic
It is better during fluid.
Thus, finned tube is based on electromagnetism enhanced heat exchange theory, in actual production, by adjusting voltage-stabilized power supply 31 to spiral
Coil 30 exports different types of electric current, realizes different fluid horizontal fin heat exchanger under various heat exchange pattern and reaches optimal electricity
Magnetic strength heat-exchanging process, available for the uniform defrosting of heat exchanger, defrosting efficiency can be effectively improved, and play the effect of energy-conservation.
Claims (7)
1. a kind of integral multifunctional Free-frost heat exchanger, including casing and the evaporator, the air-cooler that are installed in casing, on casing
Provided with into and out of air channel；It is characterized in that：The microporosity separator being longitudinally arranged is provided with the casing, casing is separated into by microporosity separator
Left and right compartment, the evaporator and air-cooler are installed in right compartment；The left compartment of air inlet duct connection casing, a left side every
Between in be provided with the dehydrating unit that dehumidification treatments are carried out to the humid air that is passed through in casing, and be equipped with for being inhaled in dehydrating unit
Enclosure material carries out the regneration of adsorbent material device of regeneration；Regneration of adsorbent material device includes the vacuum-pumping tube for connecting left compartment
Road system and the auxiliary heat pipe and Electric air valve being sequentially arranged in from left to right in left compartment between dehydrating unit and microporosity separator；Institute
State auxiliary heat pipe be connected to by condenser, choke valve and the evaporator and compression mechanism into refrigeration system in, be placed in pressing
Between contracting machine and condenser；The evaporator uses the spiral horizontal fin formula finned tube of electromagnetism enhanced heat exchange.
2. a kind of integral multifunctional Free-frost heat exchanger according to claim 1, it is characterized in that：The air inlet duct, dehumidifying
Device and regneration of adsorbent material device are respectively provided with two sets；Horizontal baffle is provided with the left compartment of the casing, on horizontal baffle
The left compartment of side and downside correspondingly installs a set of air inlet duct, dehydrating unit and regneration of adsorbent material device, in every set air intake
Control valve is equipped with the vacuum-pumping pipeline system of road and regneration of adsorbent material device, is realized by control valve and is removed on the upside of left compartment
Wet device works except the regeneration operation of wet trade and downside regneration of adsorbent material device simultaneously, and with this alternate run.
3. a kind of integral multifunctional Free-frost heat exchanger according to claim 1, it is characterized in that：The finned tube includes changing
Heat pipe and the horizontal helical fin plunderred in heat exchange pipe outer wall；The heat exchanger tube and helical fin are made of non-magnet material；
The cross section structure triangular in shape of helical fin, and be welded along its spiral shape arragement direction by the first fin and the second fin and
Into；The spiral winding arranged along its spiral shape arragement direction is provided with helical fin, two lead ends of spiral winding are corresponding
Connect the adjustable voltage-stabilized power supply of output current；Heat conduction is filled with the gap that the inner chamber of helical fin and spiral winding are formed
Silica gel.
4. a kind of integral multifunctional Free-frost heat exchanger according to claim 3, it is characterized in that：The heat exchanger tube is using circle
Shape copper pipe；First fin and the second fin are made of aluminum material；The spiral winding uses enameled wire loop.
5. a kind of spiral horizontal fin formula finned tube using electromagnetism enhanced heat exchange, including heat exchanger tube and horizontal plunder outside heat exchanger tube
Helical fin on wall, it is characterized in that：The heat exchanger tube and helical fin are made of non-magnet material；The horizontal stroke of helical fin
Section structure triangular in shape, and be welded and formed along its spiral shape arragement direction by the first fin and the second fin；In helical fin
In be provided with along its spiral shape arragement direction arrange spiral winding, two lead ends of spiral winding correspondingly connect output current can
The voltage-stabilized power supply of regulation；Heat conductive silica gel is filled with the gap that the inner chamber of helical fin and spiral winding are formed.
6. a kind of spiral horizontal fin formula finned tube using electromagnetism enhanced heat exchange according to claim 5, its feature
It is：The heat exchanger tube uses circular copper pipe；First fin and the second fin are made of aluminum material；The helix
Circle uses enameled wire loop.
7. a kind of spiral horizontal fin formula finned tube using electromagnetism enhanced heat exchange according to claim 5 or 6, it is special
Sign is：The voltage-stabilized power supply to the current type that spiral winding exports be constant current, alternating current or pulse current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711021859.0A CN107606719B (en) | 2017-10-27 | 2017-10-27 | Integrated multifunctional frostless heat exchanger |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711021859.0A CN107606719B (en) | 2017-10-27 | 2017-10-27 | Integrated multifunctional frostless heat exchanger |
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| CN107606719B CN107606719B (en) | 2022-12-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110466728A (en) * | 2018-07-27 | 2019-11-19 | 株式会社三工社 | Use the ship refrigerating plant of isobutane refrigerant |
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| CN107606719B (en) | 2022-12-20 |
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