CN207438955U - A kind of refrigerant heating unit and air-conditioning system for defrost - Google Patents
A kind of refrigerant heating unit and air-conditioning system for defrost Download PDFInfo
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- CN207438955U CN207438955U CN201721311315.3U CN201721311315U CN207438955U CN 207438955 U CN207438955 U CN 207438955U CN 201721311315 U CN201721311315 U CN 201721311315U CN 207438955 U CN207438955 U CN 207438955U
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Abstract
A kind of refrigerant heating unit and air-conditioning system for defrost of the utility model offer, the refrigerant heating unit, including：Refrigerant throughput (1) can accommodate refrigerant and flow therethrough；Heating part (2) can generate heat and exchange heat between the refrigerant throughput (1).Include to accommodate the refrigerant throughput and heat and the heating part to exchange heat between refrigerant throughput can be generated that refrigerant flows through by the utility model, can heat be generated by heating part and the refrigerant with being flowed through in refrigerant throughput carries out heat exchange effect, so as to the coolant transmission heat in air-conditioning system, heat refrigerant, and then the outdoor heat exchanger to needing defrost carries out defrosting effect, so that air-conditioning system can also continue to carry out heat supply to indoor room when carrying out defrost, indoor temperature, the comfort for improving indoor room will not be reduced.
Description
Technical field
The utility model belongs to air-conditioning technical field, and in particular to a kind of for the refrigerant heating unit of defrost and air-conditioning system
System.
Background technology
Air-conditioning heat pump is run under worst cold case, outer machine it is possible that frosting situation, so need to outdoor machine of air-conditioner into
Row defrosting, and the Defrost mode that existing air-conditioning uses mainly has two kinds of refrigeration cycle defrosting and hot gas defrosting, hot gas defrosting is empty
It adjusts and opens expansion valve greatly in heating, so that high temperature refrigerant enters evaporator defrosting；Refrigeration cycle defrosting is changed by four-way
To valve system is made to be defrosted by heating cyclic switching to refrigeration cycle.But both Defrost modes can not be right during defrosting
Indoor carry out heat supply so that temperature declines in room, influences the comfort in room, and during refrigeration cycle defrosting, indoor heat exchange
Device can also absorb the heat of indoor room as evaporator.
Since air-conditioning system of the prior art exists in defrost heat supply cannot be carried out to indoor room, so as to cause room
Interior temperature reduces and influences the technical problems such as the comfort of indoor room, therefore the utility model research and design goes out one kind for changing
The refrigerant heating unit and air-conditioning system of frost.
Utility model content
Therefore, the technical problems to be solved in the utility model is air-conditioning system of the prior art is overcome to deposit in defrost
Cannot to indoor room carry out heat supply the defects of, so as to provide a kind of refrigerant heating unit and air-conditioning system for defrost.
The utility model provides a kind of refrigerant heating unit for defrost, including：
Refrigerant throughput can accommodate refrigerant and flow therethrough；
Heating part can generate heat and exchange heat between the refrigerant throughput.
Preferably,
The refrigerant throughput includes housing, and the housing is hollow structure, including that can house the hollow of the heating part
Receiving portion.
Preferably,
The housing further includes at least one through hole set around the hollow receiver portion, enables refrigerant from institute
It states in through hole and flows through.
Preferably,
The housing is the cylinder with central axis, and the hollow receiver portion is and the body concentric center of the cylinder
Circular hole, the through hole run through the housing along the axis direction.
Preferably,
The through hole is also uniformly distributed for circular hole and around the center hole in circumferential, the diameter of the through hole
Less than the diameter of the center hole.
Preferably,
The refrigerant throughput further includes current divider, and the current divider includes shunt body and is connected to the current divider
The refrigerant inlet pipe of main body one end, the other end of the shunt body are connected with an at least shunt pipe, the shunting branch
It manages and is connected with one end of the through hole.
Preferably,
The quantity of the shunt pipe is identical with the quantity of the through hole, and the shunt pipe and the through hole one
One correspondingly connects.
Preferably,
The refrigerant throughput further includes current collector, and the current collector includes current collector main body and is connected to the current collector
The refrigerant exit pipe of main body one end, the other end of the current collector main body are connected with an at least afflux branch pipe, the afflux branch
It manages and is connected with the other end of the through hole.
Preferably,
The quantity of the afflux branch pipe is identical with the quantity of the through hole, and the afflux branch pipe and the through hole one
One correspondingly connects.
Preferably,
The central axis of the housing is in be vertically arranged, and the hollow receiver portion is from the upper axial end face of the housing
The blind hole extended towards lower axial end face direction.
Preferably,
The heating part includes electrically heated rod and the electric connection line being connected with described electrically heated rod one end.
The utility model also provides a kind of air-conditioning system, including foregoing refrigerant heating unit, further includes compressor, room
External heat exchanger, throttling set and indoor heat exchanger, wherein the refrigerant heating unit is arranged at the throttling set and the room
On refrigerant pipeline between external heat exchanger or it is arranged at cold between the air entry of the compressor and the outdoor heat exchanger
On matchmaker's pipeline.
It is provided by the utility model a kind of to be had the advantages that for the refrigerant heating unit and air-conditioning system of defrost：
1. the refrigerant heating unit and air-conditioning system for defrost of the utility model, by including that refrigerant stream can be accommodated
The refrigerant throughput crossed and heat and the heating part to exchange heat between refrigerant throughput can be generated, heating part can be passed through and generate heat
It measures and the refrigerant with being flowed through in refrigerant throughput carries out heat exchange effect, so as to the coolant transmission heat in air-conditioning system,
Refrigerant is heated, and then the outdoor heat exchanger to needing defrost carries out defrosting effect so that air-conditioning system can also when carrying out defrost
Continue to carry out heat supply to indoor room, indoor temperature, the comfort for improving indoor room will not be reduced；
2. the refrigerant heating unit and air-conditioning system for defrost of the utility model, by using current divider and current collector
Effect, refrigerant pipeline is enabled to be divided in multiple tiny pipelines, so that each tiny pipeline can be with heating
It exchanges heat between portion, effectively increases heat exchange area, improve heat transfer effect.
Description of the drawings
Fig. 1 is the dimensional structure diagram of the refrigerant heating unit for defrost of the utility model；
Fig. 2 is the dimensional structure diagram of the housing parts of the refrigerant throughput in Fig. 1；
Fig. 3 is the dimensional structure diagram of the shunt portion of the refrigerant throughput in Fig. 1；
Fig. 4 is the dimensional structure diagram of the heating part in Fig. 1.
Reference numeral is expressed as in figure：
1st, refrigerant throughput；11st, housing；110th, hollow receiver portion；111st, through hole；12nd, current divider；120th, current divider master
Body；121st, refrigerant inlet pipe；122nd, shunt pipe；13rd, current collector；130th, current collector main body；131st, refrigerant exit pipe；132nd, collect
Flow branch pipe；2nd, heating part；21st, electrically heated rod；22nd, electric connection line.
Specific embodiment
As shown in Figure 1, the utility model provides a kind of refrigerant heating unit for defrost, including：
Refrigerant throughput 1 can accommodate refrigerant and flow therethrough；
Heating part 2 can generate heat and exchange heat between the refrigerant throughput 1.
By including can accommodating refrigerant throughput that refrigerant flows through and heat can be generated and changed between refrigerant throughput
The heating part of heat can generate heat by heating part and the refrigerant with being flowed through in refrigerant throughput carries out heat exchange effect, so as to
Refrigerant can be heated, and then the outdoor heat exchanger to needing defrost carries out defrosting work to the coolant transmission heat in air-conditioning system
With so that air-conditioning system can also continue to carry out heat supply to indoor room when carrying out defrost, will not reduce indoor temperature, improve
The comfort of indoor room.A kind of refrigerant heating unit described in the utility model, by using high temperature cold after being heated to refrigerant
Matchmaker defrosts, while continues during defrosting to indoor carry out heat supply, so as to ensure indoor environment simultaneously during defrosting
Temperature and comfort.
Preferably,
As shown in Fig. 2, the refrigerant throughput 1 include housing 11, the housing 11 for hollow structure, including institute can be housed
State the hollow receiver portion 110 of heating part 2.The hollow receiver portion set by housing and enclosure interior, can accommodate heating part
In wherein, so as to the placement for heating part and heat transfer is thermally formed by heating part provides condition.
Preferably,
As shown in Fig. 2, the housing 11 further includes at least one through hole set around the hollow receiver portion 110
111st, refrigerant is enabled to be flowed through from the through hole 111.By the way that the more of setting are surround around hollow receiver portion 110 on housing
A through hole simultaneously so that through hole in flow through refrigerant, enable to refrigerant can be with hollow receiver portion when flowing through the through hole
In heating part between formed heat exchange effect (especially by shell itself structure conductive force will caused by heating part it is hot
Amount is transferred in the refrigerant in through hole), to improve the temperature of refrigerant；In addition through hole is set around hollow receiver portion, by
Centrally located in heating part, the heat generated distributes around, therefore such through hole of the utility model is set
Structure, can maximal efficiency and farthest using and absorb heat caused by heating part so that the suction of refrigerant
Heat utilization efficiency reaches highest.
Preferably,
As shown in Fig. 2, the housing 11 be the cylinder with central axis, the hollow receiver portion 110 be with it is described
The body concentric center hole of cylinder, the through hole 111 run through the housing 11 along the axis direction.It is i.e. at least one to pass through
Through hole 111 be opened between the inner and outer wall of the housing 11 and along the axis direction through housing set, so as to
Refrigerant is accommodated from the through hole 111 to pass through.This is the preferred constructive form of the housing of the utility model and hollow receiver portion
Preferred constructive form, the housing 11 be cylindrical-shaped structure, refrigerant can from axial one end of the housing enter described in pass through
The through hole is flowed out in through hole and from its axial other end, completes effect and the effect of heat exchange, and hollow receiver portion is and circle
The center hole that cylinder is arranged concentrically enables to heating part to be located at the center of housing, towards surrounding when enabling its heat dissipation
Equably distribute heat so that the heat that the refrigerant in the through hole of surrounding obtains reaches maximum and equal as much as possible.
Preferably,
The through hole 111 is also uniformly distributed for circular hole and around the center hole in circumferential, the through hole 111
Diameter be less than the center hole diameter.This is preferred constructive form and and the preferred arrangement of the through hole of the utility model
Mode, so enable to the refrigerant flowed through in through hole can from positioned at the heating part of center draw it is as identical as possible and
Maximum heat, the diameter first that the diameter of through hole is less than center hole be limited according to the structure of housing, second is energy
It is enough that through hole is made smaller and more as far as possible, so as to improve the heat exchange area between heating part, improve heat transfer effect.
Housing in refrigerant throughput is as shown in Fig. 2, it is post type, and there are one center hole is (hollow in its center
Receiving portion 110), center hole lower end seals, for the heating part block of fixed insertion center hole；There are n directly around centre bore
Footpath is less than the small sircle hole (through hole 111) of centre bore, is uniformly arranged in center hole periphery, refrigerant flows through refrigerant by small sircle hole
Throughput, and refrigerant is heated by heating part.
Embodiment 2
As shown in figs. 1 and 3, the present embodiment is being further improved of being made on the basis of embodiment 1, it is preferable that described
Refrigerant throughput 1 further includes current divider 12, and the current divider 12 includes shunt body 120 and is connected to the shunt body
The refrigerant inlet pipe 121 of 120 one end, the other end of the shunt body 120 are connected with an at least shunt pipe 122, institute
It states shunt pipe 122 and one end of the through hole 111 is connected.
By setting above-mentioned current divider, its one end can be made to be connected by refrigerant inlet pipe with refrigerant main road, from
The medium circulation pipeline of air-conditioning system introduces refrigerant, and the other end is flowed by multiple shunt pipes in the through hole of housing, so as to
Heat exchange effect is carried out between heating part in through hole and in hollow receiver portion so that refrigerant pipeline is divided in multiple
Tiny pipeline, so that each tiny pipeline can exchange heat between heating part, effectively increase heat exchange area,
Improve heat transfer effect.
The utility model refrigerant heating unit is as shown in Figure 1, it includes coolant distribution device 12 and current collector 13, heating part 2,
The housing 11 of refrigerant throughput 1, electrically heated rod 21 are arranged on hollow receiver portion 110 (center hole) position of housing 11, refrigerant
The through hole 111 in housing is entered by current divider 12, is heated by electrically heated rod 21, the high temperature refrigerant after heating passes through
Current collector 13 is returned in system refrigerant pipeline and cycled.
Preferably,
The quantity of the shunt pipe 122 is identical with the quantity of the through hole 111, and the shunt pipe 122 and institute
Through hole 111 is stated correspondingly to connect one by one.This is that the shunt pipe of the utility model is preferably provided with form, is set to
It is identical in the quantity of through hole and connect setting correspondingly with through hole, it enables to flow through in each shunt pipe
And the refrigerant come can enter in a through hole, with the heat exchange corresponding with generation between heating part of energy.
Preferably,
As shown in Figure 1, the refrigerant throughput 1 further includes current collector 13, the current collector 13 includes current collector main body 130
With the refrigerant exit pipe 131 for being connected to described 130 one end of current collector main body, the other end of the current collector main body 130 is connected with
An at least afflux branch pipe 132, the other end of the afflux branch pipe 132 and the through hole 111 are connected.
By set above-mentioned current collector, its one end can be made to be connected by multiple afflux branch pipes with the through hole of housing,
Refrigerant after being heated from through hole introduces, and confluence is one in current collector, and then passes through refrigerant inlet Guan Yuleng again
Matchmaker's main road is connected, and the refrigerant after being heated is led back into the medium circulation pipeline of air-conditioning system, so as to complete refrigerant
Exchange heat the process to flow back and effect, since refrigerant pipeline is divided in through hole in multiple tiny pipelines, so that every
A tiny pipeline can exchange heat between heating part, effectively increase heat exchange area, improve heat transfer effect.
Preferably,
The quantity of the afflux branch pipe 132 is identical with the quantity of the through hole 111, and the afflux branch pipe 132 and institute
Through hole 111 is stated correspondingly to connect one by one.This is that the afflux branch pipe of the utility model is preferably provided with form, is set to
It is identical in the quantity of through hole and connect setting correspondingly with through hole, enable to flow through in each through hole and
The refrigerant come can enter in afflux branch pipe, with can by generations is corresponding between heating part exchange heat after refrigerant return
Into Air-conditioning Cycle pipeline.
Preferably,
The central axis of the housing 11 is in be vertically arranged, and the hollow receiver portion 110 is the axis from the housing 11
The blind hole extended to upper surface towards lower axial end face direction.By the way that hollow receiver portion is arranged to upper end opening, lower end closed
Blind hole structure seals centre bore lower end, the heating part that can be used in fixed insertion centre bore (including electrically heated rod and is electrically connected
Wiring).
Embodiment 3
Such as Fig. 1, shown in 4, the present embodiment is being further improved of being made on the basis of embodiment 1-2, it is preferable that described
Heating part 2 includes electrically heated rod 21 and the electric connection line 22 being connected with described 21 one end of electrically heated rod.Wherein heating part 2 includes electricity
Connecting line 22 and the electrically heated rod 21 for generating heat generate heat after being connected energization with power supply by electric connection line 22,
And refrigerant is heated using the mode of heat transfer with these heats；Heating part is arranged on the center hole position of housing 11, and electricity adds
Hot pin 21 is inserted into the inside of center hole.
The utility model provides a kind of refrigerant heating unit, and a bulk material made post type, while by its column
A round hole is made at shape center, and electrical heating is arranged on the inside；And the circular through hole around center does n diameter and is less than circle
The small sircle hole of through hole is uniformly arranged in circular through hole periphery, flows therethrough refrigerant.Make electrical heating by way of heat transfer
Refrigerant is heated, is defrosted thereby using heated high temperature refrigerant, while inner blower does not stop operating during defrosting
Continue to indoor room heat supply.
The refrigerant heating unit of the utility model is sealed in coolant circulating system, and refrigerant is by current divider 12 by shunting
Branch pipe 122 is entered in the through hole 111 of the housing 11 of refrigerant throughput 1, and the refrigerant heated in housing 11 is by afflux branch
Pipe 132 enters current collector main body 130, is cycled via refrigerant exit pipe 131 into system.When system heating operation needs
During defrost, the electrically heated rod 21 in heating unit is opened, and electrically heated rod heats refrigerant by way of heat transfer, heating
High temperature refrigerant afterwards carries out defrost by outer machine heat exchanger, simultaneously because defrost does not use the heat of system, and it is defeated to system
Heat is entered；So after system adds in refrigerant heating unit, compared with existing defrost mode, inner blower does not stop transporting during defrost
Turn, the comfort that user uses can be promoted to indoor carry out heat supply while defrost.
It should be noted that the utility model middle casing is not limited to post type or other shapes, this practicality is new
Type preferentially uses post type.
It should be noted that the utility model middle casing centre bore (hollow receiver portion 110) and aperture (through hole 111)
Shape is unrestricted, can be circular, ellipse or other shapes, and the utility model preferentially uses round hole.
It should be noted that in the utility model middle casing small sircle hole (through hole 111) quantity n according to service condition from
Limitation, is configured, small sircle hole quantity is arranged to 6 in the utility model according to service condition.
It should be noted that electrically heated rod form is unrestricted, can be circle, oval or other forms, and its shape
Formula is corresponding with heating module centre bore, and the utility model is preferentially using circular electrically heated rod.
Can be metal material or nonmetallic it should be noted that the material of refrigerant heating module is unrestricted
Material, the utility model preferentially use metallic copper material.
The utility model also provides a kind of air-conditioning system, including foregoing refrigerant heating unit, further includes compressor, room
External heat exchanger, throttling set and indoor heat exchanger, wherein the refrigerant heating unit is arranged at the throttling set and the room
On refrigerant pipeline between external heat exchanger or it is arranged at cold between the air entry of the compressor and the outdoor heat exchanger
On matchmaker's pipeline.
By the way that refrigerant heating unit is arranged on the refrigerant pipeline between the throttling set and the outdoor heat exchanger,
Although the evaporator not absorbed heat, by heating unit to refrigerant heat after, be equivalent to had input for system it is a certain amount of
Heat, can defrost to outdoor heat exchanger；By refrigerant heating unit is arranged at the compressor air entry and
On refrigerant pipeline between the outdoor heat exchanger, this design is heated to refrigerant, also corresponds to give system input heat, make through
It is low not as original to cross the refrigerant temperature after indoor heat exchanger, while by the control to valve, makes into outdoor heat exchanger
Refrigerant temperature is higher than original temperature, so as to carry out defrost to outdoor heat exchanger.
By including can accommodating refrigerant throughput that refrigerant flows through and heat can be generated and changed between refrigerant throughput
The heating part of heat can generate heat by heating part and the refrigerant with being flowed through in refrigerant throughput carries out heat exchange effect, so as to
Refrigerant can be heated, and then the outdoor heat exchanger to needing defrost carries out defrosting work to the coolant transmission heat in air-conditioning system
With so that air-conditioning system can also continue to carry out heat supply to indoor room when carrying out defrost, will not reduce indoor temperature, improve
The comfort of indoor room.A kind of refrigerant heating unit described in the utility model, by using high temperature cold after being heated to refrigerant
Matchmaker defrosts, while continues during defrosting to indoor carry out heat supply, so as to ensure indoor environment simultaneously during defrosting
Temperature and comfort.
The refrigerant heating unit of the utility model is sealed in coolant circulating system, and refrigerant is by current divider 12 by shunting
Branch pipe 122 is entered in the through hole 111 of the housing 11 of refrigerant throughput 1, and the refrigerant heated in housing 11 is by afflux branch
Pipe 132 enters current collector main body 130, is cycled via refrigerant exit pipe 131 into system.When system heating operation needs
During defrost, the electrically heated rod 21 in heating unit is opened, and electrically heated rod heats refrigerant by way of heat transfer, heating
High temperature refrigerant afterwards carries out defrost by outer machine heat exchanger, simultaneously because defrost does not use the heat of system, and it is defeated to system
Heat is entered；So after system adds in refrigerant heating unit, compared with existing defrost mode, inner blower does not stop transporting during defrost
Turn, the comfort that user uses can be promoted to indoor carry out heat supply while defrost.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.The above is only the preferred embodiment of the utility model, it is noted that for the art
For those of ordinary skill, on the premise of the utility model technical principle is not departed from, several improvement and modification can also be made,
These improvements and modifications also should be regarded as the scope of protection of the utility model.
Claims (12)
1. a kind of refrigerant heating unit for defrost, it is characterised in that：Including：
Refrigerant throughput (1) can accommodate refrigerant and flow therethrough；
Heating part (2) can generate heat and exchange heat between the refrigerant throughput (1).
2. refrigerant heating unit according to claim 1, it is characterised in that：
The refrigerant throughput (1) includes housing (11), and the housing (11) is hollow structure, including that can house the heating part
(2) hollow receiver portion (110).
3. refrigerant heating unit according to claim 2, it is characterised in that：
The housing (11) further include around the hollow receiver portion (110) and set at least one through hole (111), so that
Refrigerant can be flowed through from the through hole (111).
4. refrigerant heating unit according to claim 3, it is characterised in that：
The housing (11) is the cylinder with central axis, and the hollow receiver portion (110) is concentric with the cylinder
Center hole, the through hole (111) along the axis direction run through the housing (11).
5. refrigerant heating unit according to claim 4, it is characterised in that：
The through hole (111) is also uniformly distributed for circular hole and around the center hole in circumferential, the through hole (111)
Diameter be less than the center hole diameter.
6. the refrigerant heating unit according to any one of claim 3-5, it is characterised in that：
The refrigerant throughput (1) further includes current divider (12), and the current divider (12) includes shunt body (120) and connection
Refrigerant inlet pipe (121) in the shunt body (120) one end, the other end of the shunt body (120) are connected with
An at least shunt pipe (122), the shunt pipe (122) and one end of the through hole (111) are connected.
7. refrigerant heating unit according to claim 6, it is characterised in that：
The quantity of the shunt pipe (122) is identical with the quantity of the through hole (111), and the shunt pipe (122) with
The through hole (111) correspondingly connects one by one.
8. the refrigerant heating unit according to any one of claim 3-5, it is characterised in that：
The refrigerant throughput (1) further includes current collector (13), and the current collector (13) includes current collector main body (130) and connection
Refrigerant exit pipe (131) in described current collector main body (130) one end, the other end of the current collector main body (130) are connected with
An at least afflux branch pipe (132), the afflux branch pipe (132) and the other end of the through hole (111) are connected.
9. refrigerant heating unit according to claim 8, it is characterised in that：
The quantity of the afflux branch pipe (132) is identical with the quantity of the through hole (111), and the afflux branch pipe (132) with
The through hole (111) correspondingly connects one by one.
10. the refrigerant heating unit according to any one of claim 2-3, it is characterised in that：
The central axis of the housing (11) is in be vertically arranged, and the hollow receiver portion (110) is from the housing (11)
Upper axial end faces the blind hole of lower axial end face direction extension.
11. refrigerant heating unit according to claim 1, it is characterised in that：
The heating part (2) includes electrically heated rod (21) and the electric connection line (22) being connected with the electrically heated rod (21) one end.
12. a kind of air-conditioning system, it is characterised in that：Including the refrigerant heating unit any one of claim 1-11, go back
Including compressor, outdoor heat exchanger, throttling set and indoor heat exchanger, wherein the refrigerant heating unit is arranged at the throttling
On refrigerant pipeline between device and the outdoor heat exchanger or it is arranged at the air entry of the compressor and the outdoor is changed
On refrigerant pipeline between hot device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721311315.3U CN207438955U (en) | 2017-10-11 | 2017-10-11 | A kind of refrigerant heating unit and air-conditioning system for defrost |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721311315.3U CN207438955U (en) | 2017-10-11 | 2017-10-11 | A kind of refrigerant heating unit and air-conditioning system for defrost |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207438955U true CN207438955U (en) | 2018-06-01 |
Family
ID=62295904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721311315.3U Active CN207438955U (en) | 2017-10-11 | 2017-10-11 | A kind of refrigerant heating unit and air-conditioning system for defrost |
Country Status (1)
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| CN (1) | CN207438955U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107702391A (en) * | 2017-10-11 | 2018-02-16 | 珠海格力电器股份有限公司 | A kind of refrigerant heater and air-conditioning system for defrost |
| CN110805977A (en) * | 2019-11-15 | 2020-02-18 | 桃江县人民医院 | Central air conditioning energy-saving equipment |
-
2017
- 2017-10-11 CN CN201721311315.3U patent/CN207438955U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107702391A (en) * | 2017-10-11 | 2018-02-16 | 珠海格力电器股份有限公司 | A kind of refrigerant heater and air-conditioning system for defrost |
| CN107702391B (en) * | 2017-10-11 | 2023-07-21 | 珠海格力电器股份有限公司 | Refrigerant heating device for defrosting and air conditioning system |
| CN110805977A (en) * | 2019-11-15 | 2020-02-18 | 桃江县人民医院 | Central air conditioning energy-saving equipment |
| CN110805977B (en) * | 2019-11-15 | 2021-02-19 | 桃江县人民医院 | Central air conditioning energy-saving equipment |
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Effective date of registration: 20200714 Address after: 519070 Guangdong city of Zhuhai province Rooster Hill Road No. 789 building Co-patentee after: GREE ELECTRIC APPLIANCES Inc. OF ZHUHAI Patentee after: GREE GREEN REFRIGERATION TECHNOLOGY CENTER Co.,Ltd. OF ZHUHAI Address before: Xiangzhou District of Guangdong city in Zhuhai province 519070 Qianshan No. 789 Patentee before: GREE ELECTRIC APPLIANCES Inc. OF ZHUHAI |
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