CN112443902A - Frequency conversion multi-connection radiation central air conditioning unit - Google Patents
Frequency conversion multi-connection radiation central air conditioning unit Download PDFInfo
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- CN112443902A CN112443902A CN202011221722.1A CN202011221722A CN112443902A CN 112443902 A CN112443902 A CN 112443902A CN 202011221722 A CN202011221722 A CN 202011221722A CN 112443902 A CN112443902 A CN 112443902A
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- radiation
- air
- dehumidification
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/044—Systems in which all treatment is given in the central station, i.e. all-air systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
- F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
- F24F12/006—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using an air-to-air heat exchanger
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/007—Ventilation with forced flow
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F2013/221—Means for preventing condensation or evacuating condensate to avoid the formation of condensate, e.g. dew
Abstract
The invention relates to a variable-frequency multi-connected radiation central air conditioning unit which comprises an indoor unit and an outdoor unit, wherein the indoor unit is connected with the outdoor unit through a steam pipe and a liquid pipe, and the indoor unit is connected with a radiation tail end and a fresh air pipeline which are arranged indoors to form a radiation air conditioning system; the indoor unit comprises a fresh air dehumidification reheating part and a radiation variable water temperature part, the fresh air dehumidification reheating part is communicated with a fresh air pipeline, and the radiation variable water temperature part is communicated with the indoor radiation tail end. The invention utilizes the dehumidification evaporator and the reheating condenser to carry out dehumidification and reheating treatment on fresh air, controls the air supply temperature while dehumidifying, prevents condensation at the air outlet, saves a dehumidification compressor, reduces the equipment cost, reduces the indoor noise, reduces the temperature of refrigerant entering the dehumidification evaporator and the refrigeration evaporator, improves the dehumidification capability and the refrigeration capability of a unit, and improves the energy efficiency of the whole unit.
Description
Technical Field
The invention relates to the technical field of radiation air conditioners and multi-split air conditioners, in particular to a variable-frequency multi-split radiation central air conditioner unit.
Background
The radiation air-conditioning system is a new technology air-conditioning system which can be installed in the ceiling wall and floor and has independent temperature and humidity control by combining a radiation tail end high-temperature cold source and independent dehumidification fresh air. The indoor sensible heat load is processed by high-temperature cold water in a radiation heat transfer mode, and the indoor latent heat load is processed by an independent fresh air dehumidification mode. The advantages are that: health care; comfort; energy is saved.
The existing radiation air-conditioning systems are divided into a centralized type and a household type, and the two radiation air-conditioning systems comprise a cold and heat source (a heat pump air-conditioning unit), a coupling tank, a water mixing and adjusting center, a water collecting and collecting device, a total heat recovery dehumidification new fan, a radiation tail end (a radiation plate or a capillary tube) and other independent devices. The two radiation air-conditioning systems are complex in design, complex in control and poor in stability; the field installation and construction are difficult, and simultaneously, a larger installation space is occupied. Indoor and outdoor cold and heat are transmitted through water pipelines, a secondary pump is complex in coupling with a hydraulic system, water leakage hidden danger exists, and the situation that pipelines and units are damaged by freezing easily occurs in winter. The double-cold-source dehumidification of low-temperature cold water and a refrigerant is not ideal under the working condition of high temperature and high humidity. The low-temperature cold water requirement required for dehumidification limits the high-temperature water supply of the heat pump water chilling unit, and the energy efficiency of the heat pump water chilling unit is prevented from being improved. The compressor for dehumidification generates noise, which affects comfort.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a variable-frequency multi-connected radiation central air conditioning unit, which has the advantages that fresh air is dehumidified, then the air temperature is changed, chilled water is directly changed into water temperature, and the problem of noise of an indoor dehumidifying compressor is solved.
According to one aspect of the invention, a frequency-conversion multi-connected radiation central air-conditioning unit is provided, which integrates four functions of air conditioning, floor heating, fresh air and dehumidification into a whole, and comprises an indoor unit and an outdoor unit, wherein the indoor unit is connected with the outdoor unit through a steam pipe and a liquid pipe, and is connected with a radiation tail end and a fresh air pipeline which are arranged indoors to form a radiation air-conditioning system; the indoor unit comprises a fresh air dehumidification reheating part and a radiation variable water temperature part, the fresh air dehumidification reheating part is communicated with a fresh air pipeline, and the radiation variable water temperature part is communicated with the indoor radiation tail end.
On the basis of the scheme, preferably, the indoor unit and the outdoor unit are respectively communicated through the steam pipe and the liquid pipe; one or more outdoor units and one or more indoor units; and a conventional variable-frequency multi-connected indoor unit can be accessed.
On the basis of the scheme, the fresh air dehumidifying and heating part preferably comprises a fresh air port, an air total heat exchanger, a dehumidifying evaporator, a reheating condenser and an air supply fan which are sequentially arranged; after sequentially passing through the air total heat exchanger, the dehumidification evaporator and the reheating condenser, outdoor air enters the room through the indoor fresh air pipeline by the air supply fan.
On the basis of the scheme, the radiation variable water temperature part preferably comprises a water dividing and collecting device, an air-conditioning water pump, a use side evaporator and a use side expansion valve; the water collecting and distributing device, the air-conditioning water pump, the use side evaporator and the use side expansion valve are sequentially connected, and the output end of the water collecting and distributing device is connected to a ceiling radiation tail end or a floor heating pipeline to form a radiation water-temperature-changing water-heating system.
On the basis of the scheme, the device also comprises a super-cooling side expansion valve, a super-cooling heat exchanger, a solenoid valve and a dehumidification expansion valve,
a refrigerant inlet of the use side evaporator is respectively communicated with the reheating condenser and the dehumidifying evaporator through the use side expansion valve, the input ends of the reheating condenser and the dehumidifying evaporator are connected through the output end of the supercooling heat exchanger, one input end of the supercooling heat exchanger is provided with the supercooling side expansion valve, and the two input ends of the supercooling heat exchanger are communicated with the liquid pipe;
and the other refrigerant inlet of the using side evaporator is communicated with the steam pipe.
On the basis of the scheme, preferably, the solenoid valve is connected between the inlet and the outlet of the reheating condenser.
On the basis of the above scheme, preferably, the dehumidification expansion valve is connected between the dehumidification evaporator and the use-side evaporator.
On the basis of the scheme, the indoor unit system is preferable to further comprise a variable-frequency multi-connected indoor unit, and the variable-frequency multi-connected indoor unit is connected with the indoor unit in parallel.
The frequency conversion multi-connected radiation central air conditioning unit has the following advantages:
1. the invention utilizes the dehumidification evaporator and the reheating condenser to carry out dehumidification and reheating treatment on fresh air, controls the air supply temperature while dehumidifying, prevents condensation at the air outlet, saves a dehumidification compressor, reduces the equipment cost and reduces the indoor noise. Meanwhile, the supercooling degree of the refrigerant is increased, the temperature of the refrigerant entering the dehumidification evaporator and the refrigeration evaporator is reduced, the dehumidification capacity and the refrigeration capacity of the unit are improved, and the energy efficiency of the whole unit is improved.
2. The invention integrates the air conditioner/floor heating/fresh air/dehumidification/four comfort functions into one set of unit, has all the advantages of the four comfort systems, and has the advantages of high dehumidification efficiency, high unit integration level, small floor area and simple and convenient installation and design.
5. The invention also utilizes the frequency conversion multi-connected outdoor unit to convey cold and heat to replace the traditional cold water air conditioner outdoor unit, thereby avoiding the hidden trouble of water leakage and the possibility of freezing and breaking the water pipe and the outdoor unit in winter. A secondary pump water mixing system of the traditional radiation air-conditioning system is simplified into a primary pump variable flow water system, the equipment cost is reduced, and the hydraulic design of the traditional radiation air-conditioning system is simplified.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of a variable-frequency multi-connected radiation central air-conditioning unit of the invention;
FIG. 2 is a schematic structural diagram of a frequency-conversion multi-connected radiation central air-conditioning unit according to a second embodiment of the present invention;
in the figure: 1. the system comprises a supercooling side expansion valve, 2, a supercooling heat exchanger, 3, a using side expansion valve, 4, a using side evaporator, 5, an electromagnetic valve, 6, a dehumidification expansion valve, 7, an air-conditioning water pump, 8, a water collector, 9, an air supply fan, 10, a reheating condenser, 11, a dehumidification evaporator, 12, a bypass air valve, 13, an air total heat exchanger, 14, an exhaust fan, 20, an outdoor unit, 30, a liquid pipe, 40, a steam pipe, 110, an indoor unit, 120 and a conventional variable-frequency multi-connected indoor unit.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
With reference to fig. 1 and fig. 2, the variable frequency multiple radiation central air conditioning unit of the present invention includes an indoor unit 110 and an outdoor unit 20; the indoor unit 110 is connected to the outdoor unit 20 through the steam pipe 40 and the liquid pipe 30.
As shown in fig. 2, the indoor units and the outdoor units of the present invention may be single or multiple, and the indoor units 110 and the outdoor units 20 are respectively communicated through the steam pipes 40 and the liquid pipes 30 to form a variable frequency radiation central air conditioning system with a larger cooling capacity, as shown in fig. 2. Meanwhile, one or more conventional variable-frequency multi-connected indoor units 120 can be accessed.
To further explain the technical solution of the present invention in detail, please refer to fig. 1, wherein the indoor unit 110 of the present invention includes a fresh air dehumidifying and reheating portion and a radiation variable water temperature portion, the fresh air dehumidifying and reheating portion is communicated with a fresh air duct, and the radiation variable water temperature portion is communicated with an indoor radiation end.
The indoor air conditioner comprises a fresh air inlet, an air full heat exchanger 13, a dehumidification evaporator 11, a reheat condenser 10 and an air supply fan 9 which are sequentially arranged, wherein the fresh air inlet comprises an air inlet and an air outlet which are exchanged with the indoor space, and the air inlet and the air outlet which are exchanged with the outdoor space, the air supply fan 9 is arranged at the air inlet which is exchanged with the indoor space, and the air exhaust fan 14 is arranged at the air outlet which is exchanged with the outdoor space.
Outdoor air sequentially passes through an air inlet which exchanges with the outdoor, an air full heat exchanger 13, a dehumidification evaporator 11, a reheating condenser 10 and an air supply fan 9 to enter the indoor. In the exhaust heat recovery part, the indoor air passes through an air inlet for exchanging with the indoor air and then is exhausted to the outdoor through the air total heat exchanger 13 and the exhaust fan 14 in sequence.
The radiation variable water temperature part of the invention comprises an air-conditioning water pump 7, a water dividing and collecting device 8, a use side expansion valve 1 and a use side evaporator 4; the water collecting and distributing device 8, the air-conditioning water pump 7, the use side evaporator 4 and the use side expansion valve 3 are sequentially connected, and the output end of the water collecting and distributing device 8 is connected to a ceiling radiation tail end or a floor heating pipeline to form a radiation water-temperature-changing water-heating system.
Also comprises a super-cooling side expansion valve 3, a super-cooling heat exchanger 2, an electromagnetic valve and a dehumidification expansion valve,
a refrigerant inlet of the use side evaporator 4 is respectively communicated with the reheating condenser 10 and the dehumidifying evaporator 11 through the use side expansion valve 3, the input ends of the reheating condenser 10 and the dehumidifying evaporator 11 are connected through the output end of the supercooling heat exchanger 2, one input end of the supercooling heat exchanger 2 is provided with the supercooling side expansion valve 3, and two input ends of the supercooling heat exchanger 2 are communicated with the liquid pipe 30;
the other refrigerant inlet of the use side evaporator 4 is communicated with the steam pipe 40; an electromagnetic valve 3 is connected between an inlet and an outlet of the reheat condenser 10, and a dehumidification expansion valve 6 is connected between the dehumidification evaporator 11 and the use-side evaporator 4.
In order to explain the structure of the present invention in more detail, the circulation circuits of the refrigerant in the outdoor unit and the indoor unit in two operation modes of the present invention will be explained in detail with reference to fig. 1:
the first method comprises the following steps: cooling (or defrost) mode: (radiation refrigeration, fresh air dehumidification)
1.1 dehumidification and reheating refrigerant loop: the medium temperature liquid refrigerant discharged from the liquid valve of the outdoor unit 20 enters the indoor unit through the liquid pipe 30, passes through the subcooler 2, the reheat condenser 10, the dehumidification expansion valve 6 for throttling, the dehumidification evaporator 11 and the steam pipe 40 in sequence, and then returns to the outdoor unit;
1.2 radiation water temperature change refrigerant loop: the medium temperature liquid refrigerant discharged from the liquid valve of the outdoor unit 20 enters the indoor unit through the liquid pipe 30, passes through the subcooler 2, the reheat condenser 10, the use side expansion valve 3 for throttling, the use side evaporator 4 and the steam pipe 40 in sequence, and then returns to the outdoor unit;
1.3 supercooling refrigerant loop: the medium temperature liquid refrigerant discharged from the liquid valve of the outdoor unit 20 enters the indoor unit through the liquid pipe 30, sequentially passes through the expansion valve 1 of the subcooler for throttling, the subcooler 2 and the steam pipe 40, and then returns to the outdoor unit;
and the second method comprises the following steps: heating mode: (radiant heating, fresh air heating)
2.1 dehumidification reheating refrigerant loop: the high-temperature vapor refrigerant discharged from the vapor valve of the outdoor unit 20 enters the indoor unit through the vapor pipe 40, passes through the dehumidification evaporator 11, the dehumidification expansion valve 6, the electromagnetic valve 5, the supercooling heat exchanger 2 and the liquid pipe 40 in sequence, and then returns to the outdoor unit 20;
2.2 radiation water temperature change refrigerant loop: the high-temperature vapor refrigerant discharged from the outdoor unit 20 enters the indoor unit through the vapor pipe 40, sequentially uses the side expansion valve 3, the use side evaporator 4, the electromagnetic valve 5, the supercooling heat exchanger 2 and the liquid pipe 30, and then returns to the outdoor unit;
finally, the method of the present application is only a preferred embodiment and is not intended to limit the scope of the present invention. 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 (8)
1. A frequency conversion multi-connected radiation central air-conditioning unit integrates four functions of air conditioning, floor heating, fresh air and dehumidification into a whole, and is characterized in that the frequency conversion multi-connected radiation central air-conditioning unit comprises an indoor unit and an outdoor unit, wherein the indoor unit is connected with the outdoor unit through a steam pipe and a liquid pipe, and the indoor unit is connected with a radiation tail end and a fresh air pipeline which are arranged indoors to form a radiation air-conditioning system; the indoor unit comprises a fresh air dehumidification reheating part and a radiation variable water temperature part, the fresh air dehumidification reheating part is communicated with a fresh air pipeline, and the radiation variable water temperature part is communicated with the indoor radiation tail end.
2. The variable-frequency multi-connected radiation central air conditioning unit as claimed in claim 1, wherein: the outdoor unit is one or more, and the indoor unit is one or more.
3. The variable-frequency multi-connected radiation central air conditioning unit as claimed in claim 1, wherein the fresh air dehumidifying and re-heating part comprises a fresh air port, an air total heat exchanger, a dehumidifying evaporator, a reheating condenser and an air supply fan which are sequentially arranged; after sequentially passing through the air total heat exchanger, the dehumidification evaporator and the reheating condenser, outdoor air enters the room through the indoor fresh air pipeline by the air supply fan.
4. The variable-frequency multi-connected radiation central air conditioning unit as claimed in claim 3, wherein the radiation variable water temperature part comprises a water dividing collector, an air conditioning water pump, a use side evaporator and a use side expansion valve; the water collecting and distributing device, the air-conditioning water pump, the use side evaporator and the use side expansion valve are sequentially connected, and the output end of the water collecting and distributing device is connected to a ceiling radiation tail end or a floor heating pipeline to form a radiation water-temperature-changing water-heating system.
5. The variable-frequency multi-connected radiation central air conditioning unit as claimed in claim 4, further comprising a super-cooling side expansion valve, a super-cooling heat exchanger, a solenoid valve and a dehumidification expansion valve,
a refrigerant inlet of the use side evaporator is respectively communicated with the reheating condenser and the dehumidifying evaporator through the use side expansion valve, the input ends of the reheating condenser and the dehumidifying evaporator are connected through the output end of the supercooling heat exchanger, one input end of the supercooling heat exchanger is provided with the supercooling side expansion valve, and the two input ends of the supercooling heat exchanger are communicated with the liquid pipe;
and the other refrigerant inlet of the using side evaporator is communicated with the steam pipe.
6. The variable-frequency multi-connected radiation central air conditioning unit as claimed in claim 5, wherein the solenoid valve is connected between the inlet and the outlet of the reheating condenser.
7. The variable-frequency multi-connected radiation central air-conditioning unit as claimed in claim 4, wherein the dehumidification expansion valve is connected between the dehumidification evaporator and the use-side evaporator.
8. The variable-frequency multi-connected radiation central air-conditioning unit as claimed in claim 1, further comprising a variable-frequency multi-connected indoor unit, wherein the variable-frequency multi-connected indoor unit is connected in parallel with the indoor unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011221722.1A CN112443902A (en) | 2020-11-05 | 2020-11-05 | Frequency conversion multi-connection radiation central air conditioning unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011221722.1A CN112443902A (en) | 2020-11-05 | 2020-11-05 | Frequency conversion multi-connection radiation central air conditioning unit |
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| Publication Number | Publication Date |
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| CN112443902A true CN112443902A (en) | 2021-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011221722.1A Pending CN112443902A (en) | 2020-11-05 | 2020-11-05 | Frequency conversion multi-connection radiation central air conditioning unit |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110167846A1 (en) * | 2005-06-23 | 2011-07-14 | York International Corporation | Method and system for dehumidification and refrigerant pressure control |
| CN204534985U (en) * | 2015-03-20 | 2015-08-05 | 上海工程技术大学 | A kind of radiation air-conditioner energy-saving control system |
| CN204987329U (en) * | 2015-08-27 | 2016-01-20 | 第一摩码人居环境科技（北京）有限公司 | A warm and humid independent control air conditioning unit of family formula for radiation air -conditioning system |
| CN107504600A (en) * | 2017-09-01 | 2017-12-22 | 邱宏祥 | Monoblock type radiation air-conditioner unit |
| CN109556215A (en) * | 2018-12-19 | 2019-04-02 | 邱宏祥 | A kind of connected radiation central air conditioner water heater group |
| CN110440353A (en) * | 2019-07-29 | 2019-11-12 | 上海湿腾电器有限公司 | A kind of ultralow temperature energy-saving type temperature-adjustable dehumidifier |
-
2020
- 2020-11-05 CN CN202011221722.1A patent/CN112443902A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110167846A1 (en) * | 2005-06-23 | 2011-07-14 | York International Corporation | Method and system for dehumidification and refrigerant pressure control |
| CN204534985U (en) * | 2015-03-20 | 2015-08-05 | 上海工程技术大学 | A kind of radiation air-conditioner energy-saving control system |
| CN204987329U (en) * | 2015-08-27 | 2016-01-20 | 第一摩码人居环境科技（北京）有限公司 | A warm and humid independent control air conditioning unit of family formula for radiation air -conditioning system |
| CN107504600A (en) * | 2017-09-01 | 2017-12-22 | 邱宏祥 | Monoblock type radiation air-conditioner unit |
| CN109556215A (en) * | 2018-12-19 | 2019-04-02 | 邱宏祥 | A kind of connected radiation central air conditioner water heater group |
| CN110440353A (en) * | 2019-07-29 | 2019-11-12 | 上海湿腾电器有限公司 | A kind of ultralow temperature energy-saving type temperature-adjustable dehumidifier |
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Application publication date: 20210305 |
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