CN215175460U - Household floor heating air conditioner dual-combined supply system - Google Patents

Household floor heating air conditioner dual-combined supply system Download PDF

Info

Publication number
CN215175460U
CN215175460U CN202120949797.5U CN202120949797U CN215175460U CN 215175460 U CN215175460 U CN 215175460U CN 202120949797 U CN202120949797 U CN 202120949797U CN 215175460 U CN215175460 U CN 215175460U
Authority
CN
China
Prior art keywords
air conditioner
floor heating
heating
module
refrigerant
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202120949797.5U
Other languages
Chinese (zh)
Inventor
曹伟
贾楠
苏欣
王继红
张振飞
冯勇
李腾龙
牛雪婷
孟书杰
蒋铭凯
商景雅
韩亮亮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Henan Construction Quality Inspection And Testing Central Station Co ltd
Shanghai Buqing Instrument Equipment Co ltd
Shanghai Buqing Technology Development Co ltd
Henan Provincial Academy Of Building Research Co ltd
Original Assignee
Henan Construction Quality Inspection And Testing Central Station Co ltd
Shanghai Buqing Instrument Equipment Co ltd
Shanghai Buqing Technology Development Co ltd
Henan Provincial Academy Of Building Research Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Henan Construction Quality Inspection And Testing Central Station Co ltd, Shanghai Buqing Instrument Equipment Co ltd, Shanghai Buqing Technology Development Co ltd, Henan Provincial Academy Of Building Research Co ltd filed Critical Henan Construction Quality Inspection And Testing Central Station Co ltd
Priority to CN202120949797.5U priority Critical patent/CN215175460U/en
Application granted granted Critical
Publication of CN215175460U publication Critical patent/CN215175460U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/54Free-cooling systems

Landscapes

  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The utility model provides a domestic floor heating air conditioner dual-combined system, which belongs to the heating technical field, and comprises an air conditioner outdoor unit, a compressor, an air conditioner indoor unit, a control cabinet and a floor heating module, wherein the air conditioner outdoor unit realizes the linkage heating of the air conditioner indoor unit and the floor heating module through the control cabinet; the switch board includes control panel, the refrigerant switch, temperature monitoring subassembly and switch board box, control panel includes the touch screen, receiving module and controller, receiving module receives and generates control command behind the instruction order of setting for, receiving module is to indoor set control panel and controller transmission control command, again by indoor set control panel and controller to controlled device transmission action instruction, the module of only being responsible for the room heating demand in indoor set place of air conditioner of warm up in this device, compare in the heating of conventional warm up water module, can satisfy the different heating demands in different rooms, realize the nimble control in each room.

Description

Household floor heating air conditioner dual-combined supply system
Technical Field
The utility model belongs to the technical field of heating, concretely relates to domestic floor heating air conditioner dual-purpose system.
Background
When the floor heating air conditioner dual-supply system is used for heating, an air conditioner indoor unit is generally independently adopted to realize quick room back heating, or floor heating is adopted to realize the effect of cold top and warm foot. When the floor heating device is used alone, the indoor temperature rises slowly and cannot heat rooms as fast as the air conditioner heats, but the air conditioner heats and is poor in comfort.
The floor heating system is usually characterized in that a water module is connected with a plurality of floor heating pipes to lead to different rooms, and due to the fact that the protection structure and the use type of each room cause heating requirements of different rooms to be inconsistent, the situations that one room has requirements and the other room does not have requirements often occur.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a domestic warm up air conditioner pair allies oneself with confession system, it is a water module connection a plurality of ground heating coil and accesss to different rooms to aim at the underfloor heating system who solves among the prior art usually, because every room protective structure and use type lead to the heating demand in different rooms inconsistent, often appear that a room has the demand, the problem of the condition of a room no demand.
In order to achieve the above object, the utility model provides a following technical scheme:
a household floor heating air conditioner dual-supply system comprises an air conditioner outdoor unit, a compressor, an air conditioner indoor unit, a control cabinet and a floor heating module, wherein the air conditioner outdoor unit realizes linkage heating of the air conditioner indoor unit and the floor heating module through the control cabinet;
the control cabinet comprises a control panel, a refrigerant switcher, a temperature monitoring assembly and a control cabinet box body, wherein the control panel comprises a touch screen, a receiving module and a controller, the receiving module receives a set instruction command and then generates a control instruction, and the receiving module transmits the control instruction to an indoor unit control panel and the controller and then transmits an action instruction to a controlled device by the indoor unit control panel and the controller;
the floor heating module comprises a heat exchange water tank, a floor heating circulation loop and a dry paving module, wherein the heat exchange water tank comprises a heat exchange coil, a heat storage tank body, a water level control switch, a water outlet and a water inlet; the floor heating circulating loop is formed by sequentially connecting a floor heating circulating pump, a water inlet pipe, a floor heating coil pipe and a water return pipe;
the indoor set control panel transmits refrigeration or heating instruction to air condensing units, and other action instructions are transmitted to each temperature sensor in controller and refrigerant switch, water level control switch, floor heating circulating pump and the temperature monitoring subassembly, realize predetermineeing the mode jointly.
As a preferred scheme of the present invention, the refrigerant switch includes two electronic expansion valves, the refrigerant switch realizes that one side of the refrigerant switch is connected to the outdoor unit of the air conditioner through the main air pipe and the main liquid pipe by a three-way structure, and the other side of the refrigerant switch is connected in parallel to the air pipes of the indoor unit of the air conditioner and the floor heating module respectively; the refrigerant switcher controls the opening and closing of the two electronic expansion valves through set instructions, and distribution of refrigerant flow direction and flow is achieved.
As a preferred scheme of the present invention, the temperature monitoring assembly includes an air supply temperature sensor, a liquid return sensor, a heat exchange temperature sensor, a water outlet temperature sensor, a water return temperature sensor and an indoor temperature sensor on the air side; the temperature monitoring assembly is responsible for monitoring the temperature of the measuring point and uploading the temperature to the cloud server and the control cabinet, and the air supply temperature sensor and the liquid return sensor are used for monitoring the working conditions of the compressor and indoor heat exchange.
As an optimized scheme, heat transfer water tank and floor heating circulating pump are integrated in the switch board box, are responsible for the hot water supply of floor heating module, water level switch is established to delivery port department and is used for monitoring water tank water level and control the operation of floor heating circulating pump.
As an optimal scheme, the model size of refrigerant switch, heat exchange water tank and the circulating pump that warms up all needs to correspond the configuration with the air conditioner model.
As an optimized scheme, the operation mode of indoor set control panel includes air conditioner refrigeration, air conditioner heating, warms up to heat and jointly heats four kinds.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses a warm up air conditioner pair confession system that allies oneself with, the module of warming up only is responsible for the room heating demand in air conditioning indoor set place, compares in the conventional heating of the module of warming up the ground water, can satisfy the different heating demands in different rooms, realizes each room nimble control.
2. The utility model discloses a with refrigerant switch and heat transfer water tank, water pump integration in the switch board for the control box is long-pending can arrange indoorly in, water tank and pipeline problem of freezing when can prevent low temperature.
3. The water tank is correspondingly configured according to the area of the floor heating circulation loop and the type of the air conditioner, water distribution and flow distribution are not needed, initial investment is saved, and wall penetration is reduced.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of a floor heating air conditioning combined supply system provided by an embodiment of the present invention;
fig. 2 is a schematic structural view of a control cabinet of a floor heating air conditioning combined supply system provided by the embodiment of the utility model;
fig. 3 is the embodiment of the utility model provides a heat exchange water tank schematic structure of floor heating air conditioner allies oneself with confession system.
In the figure: 1. an air conditioner outdoor unit; 11. a compressor; 12. a main gas pipe; 13. a main liquid pipe; 2. An air-conditioning indoor unit; 21. an indoor unit control panel; 3. a control cabinet; 31. a control panel; 311. a touch screen; 312. a receiving module; 313. a controller; 32. a refrigerant switcher; 33. a temperature monitoring assembly; 331. an air supply temperature sensor; 332. a liquid return sensor; 333. a heat exchange temperature sensor; 334. an effluent temperature sensor; 335. a backwater temperature sensor; 336. an indoor temperature sensor; 34. a control cabinet body; 4. a floor heating module; 41. a heat exchange water tank; 411. a heat exchange coil; 412. a heat storage tank body; 413. a water level control switch; 414. a water outlet; 415. a water inlet; 42. a ground heating circulation loop; 421. a floor heating circulating pump; 422. a water inlet pipe; 423. a floor heating coil pipe; 424. a water return pipe; 43. and (4) dry paving a module.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
Referring to fig. 1-3, the present invention provides the following technical solutions:
a household floor heating air conditioner dual-supply system comprises an air conditioner outdoor unit 1, a compressor 11, an air conditioner indoor unit 2, a control cabinet 3 and a floor heating module 4, wherein the air conditioner outdoor unit 1 realizes linkage heating of the air conditioner indoor unit 2 and the floor heating module 4 through the control cabinet 3;
the control cabinet 3 comprises a control panel 31, a refrigerant switcher 32, a temperature monitoring component 33 and a control cabinet box 34, the control panel 31 comprises a touch screen 311, a receiving module 312 and a controller 313, the receiving module 312 receives a set instruction command and then generates a control instruction, the receiving module 312 transmits the control instruction to the indoor unit control panel 21 and the controller 313, and then the indoor unit control panel 21 and the controller 313 transmit an action instruction to a controlled device;
the floor heating module 4 comprises a heat exchange water tank 41, a floor heating circulation loop 42 and a dry paving module 43, wherein the heat exchange water tank 41 comprises a heat exchange coil 411, a heat storage box body 412, a water level control switch 413, a water outlet 414 and a water inlet 415; the floor heating circulation loop 42 is formed by sequentially connecting a floor heating circulation pump 421, a water inlet pipe 422, a floor heating coil 423 and a water return pipe 424;
the indoor unit control panel 21 transmits a cooling or heating instruction to the air conditioner outdoor unit 1, and the controller 313 transmits other operation instructions with the refrigerant switcher 32, the water level control switch 413, the floor heating circulating pump 421 and the temperature sensors in the temperature monitoring assembly 33, so as to jointly realize a preset working mode.
The utility model discloses an in the concrete embodiment, air condensing units 1 links with indoor set 2 of air conditioner and floor heating module 4 through switch board 3, realize air conditioning refrigeration, the air conditioner heats, floor heating heats and jointly heats four kinds of operational mode such as, return water temperature sensor 335 then monitors water tank temperature T1 respectively, T2, T3, and be responsible for monitoring indoor air temperature T4's indoor temperature sensor 336, temperature monitoring subassembly 33 is responsible for monitoring the temperature of each measurement station and uploads to cloud ware and switch board 3, conveniently form corresponding control command. The floor heating module 4 obtains heat required by the floor heating circulation loop 42 from the system through the heat exchange water tank 41, one air conditioner outdoor unit 1 corresponds to one air conditioner indoor unit 2 and one floor heating module 4, the water tank and the floor heating circulation loop 42 are correspondingly configured in area, and one set of system controls temperature supply of one room together. Local warm air conditioner pair allies oneself with supply system ground heating coil 423 requires singly not only to be limited to for diameter 10mm ground heating coil, also can use normal pipe diameter ground heating coil, and ground heating module 4 only is responsible for the room heating demand in 2 places in the air conditioning machine in this device, compares in the heating of conventional ground heating water module, can satisfy the different heating demands in different rooms, realizes that each room is nimble to be controlled.
Specifically referring to fig. 1, the refrigerant switcher 32 includes two electronic expansion valves, one side of the refrigerant switcher 32 is connected to the outdoor unit 1 of the air conditioner through the main air pipe 12 and the main liquid pipe 13 by a three-way structure, and the other side of the refrigerant switcher 32 is connected in parallel to the air pipes of the indoor unit 2 of the air conditioner and the floor heating module 4 respectively; the refrigerant switch 32 controls the opening and closing of the two electronic expansion valves according to a set command, thereby realizing the distribution of the refrigerant flow direction and flow rate.
In this embodiment: the refrigerant switch 32 controls the opening and closing degrees of the two electronic expansion valves according to a set command, thereby realizing the distribution of the refrigerant flow direction and flow rate.
Specifically referring to fig. 2, the temperature monitoring assembly 33 includes a gas supply temperature sensor 331, a liquid return sensor 332, a heat exchange temperature sensor 333, a water outlet temperature sensor 334, a water return temperature sensor 335 and an indoor temperature sensor 336 on the air side on the refrigerant side; the temperature monitoring component 33 is responsible for monitoring the temperature of the measuring point and uploading the temperature to the cloud server and the control cabinet 3, and the air supply temperature sensor 331 and the liquid return sensor 332 are used for monitoring the working conditions of the compressor 11 and indoor heat exchange.
In this embodiment: the temperature monitoring component 33, the air supply temperature sensor 331, the liquid return sensor 332 and the like are used for detecting the control cabinet 3, the compressor 11 and the like, so that the device is more intelligent and safer.
Referring to fig. 3, the heat exchange water tank 41 and the floor heating circulating pump 421 are integrated in the control cabinet 34 and are responsible for supplying hot water to the floor heating module 4, and a water level switch is disposed at the water outlet 414 for monitoring the water level in the water tank and controlling the operation of the floor heating circulating pump 421.
In this embodiment: refrigerant switch 32 and heat exchange water tank 41, ground heating circulating pump 421 integration are in switch board 3 for it is little not very big to arrange in indoorly to control cabinet box 34, and water tank and pipeline freeze problem when can preventing the low temperature.
Specifically referring to fig. 2, the refrigerant switcher 32, the heat exchange water tank 41 and the floor heating circulating pump 421 are all configured to correspond to the air conditioner model.
In this embodiment: the area of the floor heating circulation loop 42 is correspondingly configured with the type of the air conditioner, water distribution and flow distribution are not needed, initial investment is saved, and wall penetration is reduced.
Specifically referring to fig. 1, the operation modes of the indoor unit control panel 21 include air-conditioning refrigeration, air-conditioning heating, floor heating, and combined heating.
In this embodiment: the air conditioner outdoor unit 1 is linked with the air conditioner indoor unit 2 and the floor heating module 4 through the control cabinet 3, and four operation modes of air conditioner refrigeration, air conditioner heating, floor heating, combined heating and the like are achieved.
The utility model discloses a theory of operation and use flow: the air conditioner outdoor unit 1 is linked with the air conditioner indoor unit 2 and the floor heating module 4 through the control cabinet 3 to realize four operation modes of air conditioner refrigeration, air conditioner heating, floor heating and combined heating, a return water temperature sensor 335 is used for monitoring water tank temperatures T1, T2 and T3 and an indoor temperature sensor 336 used for monitoring an indoor air temperature T4, the temperature monitoring assembly 33 is used for monitoring the temperature of each measuring point and uploading the temperature to the cloud server and the control cabinet 3, and corresponding control instructions are conveniently formed. The floor heating module 4 obtains heat required by the floor heating circulation loop 42 from the system through the heat exchange water tank 41, one air conditioner outdoor unit 1 corresponds to one air conditioner indoor unit 2 and one floor heating module 4, the water tank and the floor heating circulation loop 42 are correspondingly configured in area, and one set of system controls temperature supply of one room together. Local warm air conditioner pair allies oneself with supply system ground heating coil 423 requires singly not only to be limited to for diameter 10mm ground heating coil, also can use normal pipe diameter ground heating coil, and ground heating module 4 only is responsible for the room heating demand in 2 places in the air conditioning machine in this device, compares in the heating of conventional ground heating water module, can satisfy the different heating demands in different rooms, realizes that each room is nimble to be controlled.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. The utility model provides a domestic floor heating air conditioner pair allies oneself with confession system which characterized in that: the air conditioner comprises an air conditioner outdoor unit (1), a compressor (11), an air conditioner indoor unit (2), a control cabinet (3) and a floor heating module (4), wherein the air conditioner outdoor unit (1) realizes linkage heating of the air conditioner indoor unit (2) and the floor heating module (4) through the control cabinet (3);
the control cabinet (3) comprises a control panel (31), a refrigerant switcher (32), a temperature monitoring component (33) and a control cabinet body (34), the control panel (31) comprises a touch screen (311), a receiving module (312) and a controller (313), the receiving module (312) receives a set instruction command and then generates a control instruction, the receiving module (312) transmits the control instruction to the indoor unit control panel (21) and the controller (313), and then the indoor unit control panel (21) and the controller (313) transmit an action instruction to a controlled device;
the floor heating module (4) comprises a heat exchange water tank (41), a floor heating circulation loop (42) and a dry paving module (43), wherein the heat exchange water tank (41) comprises a heat exchange coil (411), a heat storage tank body (412), a water level control switch (413), a water outlet (414) and a water inlet (415); the floor heating circulation loop (42) is formed by sequentially connecting a floor heating circulation pump (421), a water inlet pipe (422), a floor heating coil pipe (423) and a water return pipe (424);
the indoor unit control panel (21) transmits a refrigerating or heating instruction to the air conditioner outdoor unit (1), and the controller (313) transmits other action instructions with each temperature sensor in the refrigerant switcher (32), the water level control switch (413), the floor heating circulating pump (421) and the temperature monitoring assembly (33), so that a preset working mode is realized together.
2. The household floor heating and air conditioning dual-combined supply system according to claim 1, characterized in that: the refrigerant switcher (32) comprises two electronic expansion valves, one side of the refrigerant switcher (32) is connected with the air conditioner outdoor unit (1) through a main air pipe (12) and a main liquid pipe (13) through a three-way structure, and the other side of the refrigerant switcher (32) is connected with air supply pipes of the air conditioner indoor unit (2) and the floor heating module (4) in parallel respectively; the refrigerant switcher (32) controls the opening and closing of the two electronic expansion valves through set instructions, and the distribution of the refrigerant flow direction and the refrigerant flow rate is realized.
3. The household floor heating and air conditioning dual-combined supply system according to claim 2, characterized in that: the temperature monitoring component (33) comprises a gas supply temperature sensor (331) at a refrigerant side, a liquid return sensor (332), a heat exchange temperature sensor (333) at a floor heating side, a water outlet temperature sensor (334), a water return temperature sensor (335) and an indoor temperature sensor (336) at an air side; the temperature monitoring assembly (33) is responsible for monitoring the temperature of the measuring point and uploading the temperature to the cloud server and the control cabinet (3), and the air supply temperature sensor (331) and the liquid return sensor (332) are used for monitoring the working conditions of the compressor (11) and indoor heat exchange.
4. The household floor heating and air conditioning dual-supply system according to claim 3, characterized in that: heat exchange water tank (41) and ground heating circulating pump (421) are integrated in switch board box (34), are responsible for the hot water supply of ground heating module (4), delivery port (414) department establishes water level switch and is used for monitoring water level in the water tank and controlling the operation of ground heating circulating pump (421).
5. The household floor heating and air conditioning dual-supply system according to claim 4, characterized in that: the refrigerant switcher (32), the heat exchange water tank (41) and the floor heating circulating pump (421) are required to be correspondingly configured with the air conditioner model.
6. The household floor heating and air conditioning dual-supply system according to claim 5, characterized in that: the operation modes of the indoor unit control panel (21) comprise air conditioner refrigeration, air conditioner heating, floor heating and combined heating.
CN202120949797.5U 2021-05-06 2021-05-06 Household floor heating air conditioner dual-combined supply system Active CN215175460U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202120949797.5U CN215175460U (en) 2021-05-06 2021-05-06 Household floor heating air conditioner dual-combined supply system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202120949797.5U CN215175460U (en) 2021-05-06 2021-05-06 Household floor heating air conditioner dual-combined supply system

Publications (1)

Publication Number Publication Date
CN215175460U true CN215175460U (en) 2021-12-14

Family

ID=79366734

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202120949797.5U Active CN215175460U (en) 2021-05-06 2021-05-06 Household floor heating air conditioner dual-combined supply system

Country Status (1)

Country Link
CN (1) CN215175460U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022068950A1 (en) * 2021-04-16 2022-04-07 青岛海尔空调器有限总公司 Room temperature adjusting device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022068950A1 (en) * 2021-04-16 2022-04-07 青岛海尔空调器有限总公司 Room temperature adjusting device

Similar Documents

Publication Publication Date Title
CN103134232B (en) Air-source water heater with cooling, heating and clothes drying functions
CN109724219B (en) Multi-split air-conditioning floor heating system and control method
CN204806546U (en) Warm system of air source heat pump roof radiation direct expansion cooling
CN109959073A (en) Air-conditioning system and its operation method
CN105890225A (en) Partial heat recovery type air conditioner cold hot water and life hot water joint supply system
CN215175460U (en) Household floor heating air conditioner dual-combined supply system
CN112325379B (en) Multi-split air conditioner floor heating system and control method
CN102853490B (en) Pipeline cold and heat circulation system
CN106871276B (en) Super high-rise building cooling and heating air conditioning system with low-power refrigerant pump for high-efficiency energy transmission
CN216868885U (en) Refrigerant branch distribution control system of one-to-many air energy special heating radiator
CN206929902U (en) A kind of solar air source heat pumps combined supply system
CN211695239U (en) Air-cooled cold-warm water-heating integrated machine
CN210624718U (en) Air conditioning system
JP2014142150A (en) Air conditioning panel and panel air conditioner
CN202709357U (en) Pipeline cold and heat circulation system
CN110986197A (en) Heat recovery type VRV air conditioning system suitable for room for subway station
CN219120674U (en) Multifunctional air conditioner with water heater
CN218884314U (en) Triple co-generation system
CN218721982U (en) Ground temperature-regulating refrigerating system
RU2133922C1 (en) Air-conditioning system for rooms
CN216159136U (en) Dual-purpose heat pump system based on refrigeration and heating and electronic equipment
CN204786878U (en) Trigeminy supplies outer machine of air conditioner
CN221005301U (en) Multi-split water module system
CN217274604U (en) Fluorine pump double circulation system
CN115264690B (en) Bypass heat exchange structure, four-pipe heating recovery system, air conditioning unit and control method

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant