CN209744650U - Fresh air-capillary network air combined adjusting system - Google Patents
Fresh air-capillary network air combined adjusting system Download PDFInfo
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- CN209744650U CN209744650U CN201920306424.9U CN201920306424U CN209744650U CN 209744650 U CN209744650 U CN 209744650U CN 201920306424 U CN201920306424 U CN 201920306424U CN 209744650 U CN209744650 U CN 209744650U
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Abstract
The utility model discloses a new trend-capillary network air combined control system belongs to the air conditioning equipment field. The utility model comprises an outdoor unit, a fresh air unit and a radiation temperature adjusting unit; the outdoor unit comprises a compressor, an outdoor main pipe and a four-way valve, the radiation temperature adjusting unit comprises a temperature adjusting heat exchanger, an adjusting valve and a capillary network, and the fresh air unit comprises a refrigerating heat exchanger and a reheating heat exchanger. The utility model discloses the work of well outdoor unit through the compressor provides corresponding working medium for new trend unit and radiation thermoregulation unit, not only makes new trend unit and radiation thermoregulation unit can stabilize work alone, avoids taking place the dewfall on the capillary net among the radiation thermoregulation unit; and the cost of the simultaneous working of the fresh air unit and the radiation temperature adjusting unit is reduced, and the space required by installation equipment is reduced.
Description
Technical Field
The utility model relates to an air conditioning equipment field, more specifically say, relate to a new trend-capillary network air joint governing system.
Background
With the continuous improvement of living standard and the continuous progress of science and technology of people, the requirement of users on indoor environment is higher and higher; the traditional forced convection heat exchange air conditioner changes the indoor temperature and humidity by adopting a mode of indoor air internal circulation convection heat transfer, and the mode easily causes discomfort of indoor users. And in the end of the 20 th century, 80 s, the planar radiation system of capillary networks invented by the german donaldherbst attracted much attention. Such invisible air conditioning systems have since been used in many high-end commercial buildings, government buildings, banks, utilities and medical settings for decades. The capillary network radiation temperature control technology is combined with the fresh air technology, the capillary network provides sensible heat, and the fresh air processing unit provides latent heat and fresh air required by air exchange; compared with the traditional air conditioning mode, the air conditioning system has the remarkable advantages of stable and safe operation, no blowing feeling, low noise, comfort, energy conservation, uniform indoor temperature and the like.
but the prior capillary network radiation fresh air conditioning system also has some defects; in the use, take place the dewfall when indoor capillary network surface temperature is less than the indoor air dew point easily, but the circulation of guaranteeing indoor new trend again and the constancy of temperature, so in the use (especially use in summer) dehumidification processing to the new trend is very important, but need extra refrigerating unit to refrigerate to the dehumidification processing process of new trend again, this just leads to present capillary network radiation new trend air conditioning system to need provide extra cold source or increase outer quick-witted quantity, this just leads to system architecture complicacy, use cost is high and area is installed inconveniently greatly. At present, related research units have proposed a technical scheme for controlling all refrigeration loads by using one set of refrigeration unit, but most of the technical schemes have the problem that the temperature of a capillary network and the temperature and humidity of a fresh air unit cannot be controlled independently.
Through retrieval, the invention name is: a capillary tube radiation special air-conditioning heat pump fresh air unit and a control method thereof (application number: 2017105163691, application date: 2017.06.29) use a set of refrigerating unit to exchange heat with water through a heat exchanger, then the water provides a heat source or a cold source for a capillary network, and simultaneously the water provides the cold source or the heat source for the fresh air unit; although the application realizes that one set of refrigerating unit provides a cold source or a heat source for the capillary network and the fresh air handling unit, the refrigerating unit can only provide the cold source or the heat source for the fresh air handling unit, so that the fresh air handling unit cannot perform further temperature control and humidity control on fresh air; in addition, the temperature of the capillary network and the temperature and humidity of the fresh air handling unit cannot be independently controlled.
SUMMERY OF THE UTILITY MODEL
1. technical problem to be solved by the utility model
the utility model aims to overcome prior art, capillary network radiation new trend air conditioning system needs multiunit refrigerating unit to the unable independent control of capillary network temperature and new trend unit humiture and the inconvenient technical problem of new trend temperature regulation provide a new trend-capillary combined air conditioning system, this system provides heat source or cold source through single refrigerating unit to the capillary network of new trend unit and water circulation, can carry out the independent control to the temperature of tubule network and the humiture of new trend unit simultaneously.
2. Technical scheme
in order to achieve the above purpose, the utility model provides a technical scheme does:
the utility model discloses a new trend-capillary network air combined regulation system, including outdoor unit, radiation thermoregulation unit and new trend unit, outdoor unit includes compressor, outdoor person in charge and cross valve; an exhaust port and an air suction port of the compressor are respectively connected with the four-way valve, an outdoor main pipe is connected with an E port of the four-way valve, and an outdoor heat exchanger and an expansion valve I are arranged on the outdoor main pipe; the radiation temperature adjusting unit comprises a temperature adjusting heat exchanger, an adjusting valve and a capillary network, wherein a working medium port I of the temperature adjusting heat exchanger is connected with the outdoor main pipe, a working medium port II of the temperature adjusting heat exchanger is connected with a port C of the four-way valve, a water flow loop is formed between the temperature adjusting heat exchanger and the capillary network through a water supply pipe and a water outlet pipe, the adjusting valve is arranged on the water flow loop and used for adjusting the water flow entering the temperature adjusting heat exchanger; the fresh air unit comprises a refrigeration heat exchanger and a reheating heat exchanger; the inlet of the refrigeration heat exchanger is connected with the outdoor main pipe, and the outlet of the refrigeration heat exchanger is unidirectionally connected with the port C of the four-way valve; the inlet of the reheating heat exchanger is connected with the exhaust port of the compressor, the outlet of the reheating heat exchanger is connected with the working medium port I, and an expansion valve II is arranged on a pipeline between the outlet of the reheating heat exchanger and the working medium port I.
Preferably, the water inlet of the temperature-regulating heat exchanger is connected with the water outlet end of the capillary network through a water outlet pipe, and the water outlet of the temperature-regulating heat exchanger is connected with the water inlet end of the capillary network through a water supply pipe; the regulating valve is a three-way proportional regulating valve, a confluence port of the regulating valve is communicated with a water outlet pipe, a branch port I of the regulating valve is connected with a water inlet of the temperature-regulating heat exchanger, and a branch port II of the regulating valve is connected with a water supply pipe.
preferably, the outdoor return pipe is provided with a suction thermometer and a suction manometer.
Preferably, a thermometer is arranged on the refrigeration heat exchanger, and a thermometer is arranged on the outlet of the refrigeration heat exchanger; an expansion valve III is arranged on a pipeline connecting the inlet of the refrigeration heat exchanger and the outdoor main pipe.
Preferably, the air inlet of the fresh air unit is provided with a filter screen for filtering impurities in the air entering the fresh air unit.
Preferably, a water supply thermometer is provided on the water supply pipe.
Preferably, an exhaust pipe is arranged between the exhaust port and the four-way valve, and an exhaust switch, an exhaust pressure gauge and an exhaust thermometer are arranged on the exhaust pipe.
Preferably, the outdoor heat exchanger and the refrigeration heat exchanger are tube-fin heat exchangers; the reheating heat exchanger is a coil type heat exchanger; the temperature-regulating heat exchanger is a plate heat exchanger.
The utility model discloses a new trend-capillary network air combined control system summer new trend temperature control method, the working medium flow that gets into reheat heat exchanger from the gas vent of compressor accounts for the ratio of the gas vent discharge working medium total flow of compressor and is K, K ═ B × e ^ 0.05 × T send ^ B get 0.01 ~ 0.03, T send' for predetermined air supply temperature.
The utility model relates to a winter fresh air temperature adjusting method of a fresh air-capillary network air combined adjusting system, an environment thermometer is arranged at the air inlet of a fresh air unit; the environmental temperature measured by the environmental thermometer is T ring; the ratio of the flow of the working medium entering the reheating heat exchanger from the exhaust port of the compressor to the total flow of the working medium discharged from the exhaust port of the compressor is K, wherein K is Axe ^ 0.05 × (T send '-1.2T ring +8) ], A is 0.05-0.08, and T is sent' to be the preset air supply temperature.
3. Advantageous effects
adopt the technical scheme provided by the utility model, compare with existing well-known technique, have following apparent effect:
(1) the utility model relates to a fresh air-capillary network air combined regulating system, which comprises an outdoor unit, a fresh air unit and a radiation temperature regulating unit; the outdoor unit comprises a compressor, an outdoor main pipe and a four-way valve, the radiation temperature regulating unit comprises a temperature regulating heat exchanger, a regulating valve and a capillary network, and the fresh air unit comprises a refrigerating heat exchanger and a reheating heat exchanger; the outdoor unit provides corresponding working media for the refrigerating heat exchanger, the reheating heat exchanger and the radiation temperature adjusting unit in the fresh air unit through the work of the compressor, so that the single compressor can simultaneously provide the corresponding working media for the fresh air unit and the radiation temperature adjusting unit, and the fresh air unit and the radiation temperature adjusting unit can independently and stably work; and the cost of the simultaneous working of the fresh air unit and the radiation temperature adjusting unit is reduced, and the space occupied by the installation equipment is reduced.
(2) The utility model discloses a new trend-capillary network air combined regulation system, the heat exchanger that adjusts the temperature sets up on pipeline III, through delivery pipe and outlet pipe constitute the rivers return circuit between heat exchanger and the capillary network of adjusting the temperature, the water inlet of heat exchanger that adjusts the temperature links to each other with the outlet end of capillary network through the outlet pipe, the delivery port of heat exchanger that adjusts the temperature links to each other with the inlet end of capillary network through the delivery pipe; the water flow loop is provided with a water pump and an adjusting valve, the adjusting valve is a three-way proportional adjusting valve, a confluence port of the adjusting valve is communicated with a water outlet pipe, a diversion port I of the adjusting valve is connected with a water inlet of the temperature-adjusting heat exchanger, and a diversion port II of the adjusting valve is connected with a water supply pipe; the regulating valve can regulate the water flow entering the temperature regulating heat exchanger to exchange heat with the working medium, so that the radiation temperature of the capillary network can be independently controlled, and the influence on the fresh air unit in the regulating process of the radiation temperature of the capillary network is avoided.
drawings
Fig. 1 is a schematic diagram of the overall structure of a fresh air-capillary network air combined conditioning system of the present invention;
FIG. 2 is a schematic view of a new air unit in the new air-capillary network air combined conditioning system according to the present invention;
FIG. 3 is a schematic view of a radiation temperature adjusting unit in a fresh air-capillary network air combined conditioning system according to the present invention;
Fig. 4 is a schematic view of the working state of the fresh air-capillary network air combined conditioning system of the present invention in the state of embodiment 2;
fig. 5 is a schematic view of the working state of the fresh air-capillary network air combined regulation system of the present invention in the state of embodiment 3.
The reference numerals in the schematic drawings illustrate:
100. An outdoor unit; 110. a compressor; 111. an exhaust port; 112. an air suction port;
120. An outdoor heat exchanger; 130. an expansion valve I; 140. a four-way valve; 150. a liquid storage tank;
200. A radiation temperature adjusting unit; 210. a temperature-regulating heat exchanger; 211. a working medium port I; 212. a working medium port II; 213. a water inlet; 214. A water outlet;
220. Adjusting a valve; 221. a flow dividing port I; 222. a flow dividing port II; 223. a flow merging port;
230. A water pump; 240. a capillary network; 241. a water inlet end; 242. a water outlet end; 250. an expansion tank; 260. a water supply thermometer;
300. a fresh air unit; 301. an air inlet; 302. an air outlet; 310. a fresh air duct; 311. an induced draft fan; 312. a filter screen; 313. a refrigeration heat exchanger; 313T, first thermometer; 313a, a refrigeration heat exchanger inlet; 313b, a refrigeration heat exchanger outlet; 313bT, second thermometer;
314. A reheat heat exchanger; 314a, reheat heat exchanger inlet; 314b, reheat heat exchanger outlet;
315. A humidifier; 316. a dehumidification thermometer; 317. an air supply thermometer; 318. a one-way valve; 319. an expansion valve II; 320. an expansion valve III; 321. an environmental thermometer;
411. An exhaust pipe; 412. returning the pipe outdoors; 413. an outdoor main pipe; 414. an exhaust switch; 415. an exhaust gas pressure gauge; 416. an exhaust thermometer; 417. an aspiration thermometer; 418. an aspiration manometer;
421. A fulcrum I; 422. a fulcrum II;
431. A pipeline I; 432. a pipeline II; 433. a bypass pipe; 434. a reheat return pipe; 435. a pipe III;
441. a water supply pipe; 442. and (5) discharging a water pipe.
Detailed Description
For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings and examples.
The structure, ratio, size and the like shown in the drawings of the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention does not have the substantial significance in the technology, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy which can be produced by the present invention and the achievable purpose. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle", and the like, referred to in the present specification, are used for clarity of description only, and are not used to limit the implementable scope, and changes or adjustments of the relative relationship thereof are also regarded as the implementable scope of the present invention without substantial changes in the technical content; in addition, the embodiments of the present invention are not independent of each other, but can be combined.
As shown in fig. 1 to 3, the utility model discloses a new trend-capillary network air combined regulation system, including radiation thermoregulation unit 200, new trend unit 300 and outdoor unit 100, wherein radiation thermoregulation unit 200 is used for undertaking indoor sensible heat load, and it adjusts indoor temperature through the form of radiation heat transfer; the fresh air unit 300 is used for providing fresh air indoors on one hand, and adjusting temperature and humidity of the fresh air on the other hand, so that the condition that the temperature and humidity of the provided fresh air and the temperature and humidity of indoor air are greatly different and discomfort of a user is caused is avoided, and the fresh air unit 300 is also used for bearing indoor latent heat load; and the outdoor unit 100 is used to provide appropriate cold and heat sources to the midfresh air unit 300 and the radiant temperature adjusting unit 200 in an operating state. The specific embodiment of the present invention is as follows.
Example 1
the utility model discloses a new trend-capillary network air joint regulation system, including outdoor unit 100, new trend unit 300 and radiation thermoregulation unit 200. Wherein, the outdoor unit 100 includes a compressor 110, an outdoor main pipe 413 and a four-way valve 140, an exhaust port 111 and a suction port 112 of the compressor 110 are respectively connected with the four-way valve 140, the exhaust port 111 of the compressor 110 is communicated with a D port of the four-way valve 140 through an exhaust pipe 411; the compressor 110 compresses the working medium into a high-temperature high-pressure gaseous state by mechanical work, and the high-temperature high-pressure gaseous working medium is transported into the exhaust pipe 411 through the exhaust port 111 for standby; suction port 112 of compressor 110 communicates with the S port of four-way valve 140 through outdoor return pipe 412; the low-temperature low-pressure gaseous working medium at the S port is returned to the suction port 112 of the compressor 110 through the outdoor return pipe 412, and then the compressor 110 compresses the low-temperature low-pressure gaseous working medium into a high-temperature high-pressure gaseous working medium.
In addition, the outdoor unit 100 further comprises an outdoor main pipe 413, the outdoor main pipe 413 is connected with an E port of the four-way valve 140, and the outdoor main pipe 413 is provided with an outdoor heat exchanger 120 and an expansion valve i 130; it should be noted here that, in the use process of four-way valve 140, outdoor main pipe 413 may also be connected to port C of four-way valve 140, and the technical functions implemented by the two connection methods are not substantially different.
In this embodiment, the outdoor heat exchanger 120 is a tube-fin heat exchanger, the outdoor heat exchanger 120 performs different temperature exchanging functions according to different use environments, and when the outdoor unit 100 needs to provide a cold source to the fresh air unit 300 and the radiation temperature adjusting unit 200, the outdoor heat exchanger 120 functions as a condenser; the outdoor heat exchanger 120 now functions as an evaporator when the outdoor unit 100 needs to provide a heat source to the fresh air unit 300 and the radiant attemperating unit 200. The expansion valve I130 is an electronic expansion valve, and the expansion valve I130 can convert the high-temperature high-pressure liquid working medium passing through the outdoor main pipe 413 into a low-temperature low-pressure gas-liquid two-phase working medium by adjusting the flow and pressure of the working medium. It should be noted that in this embodiment, the expansion valve i 130 not only simply changes the working condition in the outdoor main pipe 413 to adapt to the subsequent working process, but also the outdoor return pipe 412 is provided with an air suction temperature gauge 417 and an air suction pressure gauge 418, the air suction superheat degree of the system can be calculated by measuring the air suction temperature parameter and the air suction pressure parameter measured by the air suction temperature gauge 417 and the air suction pressure gauge 418, and in this embodiment, the air suction superheat degree is kept at 3-8 ℃ by adjusting the opening degree of the expansion valve i 130, so as to ensure the safe and efficient operation of the system; in addition, an exhaust switch 414, an exhaust pressure gauge 415 and an exhaust temperature gauge 416 are arranged on the exhaust port 111 of the exhaust pipe 411 at the exhaust port 111, exhaust pressure parameters and exhaust temperature parameters measured by the exhaust pressure gauge 415 and the exhaust temperature gauge 416 are used for calculating the exhaust superheat degree, and the expansion valve I130 can simultaneously refer to the suction superheat degree and the exhaust superheat degree to adjust the opening degree thereof adaptively, so that the system can run more safely and efficiently. The outdoor main pipe 413 in this embodiment is further provided with a liquid storage tank 150.
The radiation temperature adjusting unit 200 comprises a temperature adjusting heat exchanger 210, an adjusting valve 220 and a capillary network 240, wherein the temperature adjusting heat exchanger 210 comprises a working medium side and a water flow side, and is used for exchanging heat of working medium flowing on the working medium side to flowing water flow on the water flow side, the working medium side comprises a working medium port I211 and a working medium port II 212, and the water flow side comprises a water inlet 213 and a water outlet 214; the working medium port I211 of the temperature-adjusting heat exchanger 210 is connected with the outdoor main pipe 413, the working medium port II 212 of the temperature-adjusting heat exchanger 210 is connected with the port C of the four-way valve 140, similarly, the working medium port II 212 can also be connected with the port E of the four-way valve 140 in the use process of the four-way valve 140, the technical functions realized by the two connection modes are not essentially different, and the port E and the port C of the four-way valve 140 can be freely communicated with one of the outdoor main pipe 413 and the working medium port II 212 in the use process.
The specific communication mode in this embodiment is as follows: the outdoor main pipe 413 is communicated to a fulcrum I421, and the working medium port I211 is connected with the fulcrum I421 through a pipeline, namely is communicated with the outdoor main pipe 413; working medium port II 212 is connected with port C of four-way valve 140 through pipeline III 435. At the moment, the compressor 110, the outdoor heat exchanger 120, the expansion valve I130 and the temperature-adjusting heat exchanger 210 form a working medium circulation loop; the flow direction of the working medium in the working medium circulation loop is changed by adjusting different connection modes of the ports in the four-way valve 140, and the capillary network 240 can be cooled or heated by the temperature-adjusting heat exchanger 210 by switching the flow direction of the working medium in the working medium circulation loop.
A water flow loop is formed between the temperature-regulating heat exchanger 210 and the capillary tube network 240 through a water supply pipe 441 and a water outlet pipe 442, the water flow loop is provided with a regulating valve 220, and the regulating valve 220 is used for regulating water flow entering the temperature-regulating heat exchanger 210; in this embodiment, the communication mode between the temperature-adjusting heat exchanger 210 and the capillary network 240 is as follows: the water inlet 213 of the temperature-adjusting heat exchanger 210 is connected with the water outlet 242 of the capillary network 240 through the water outlet pipe 442, and the water outlet 214 of the temperature-adjusting heat exchanger 210 is connected with the water inlet 241 of the capillary network 240 through the water supply pipe 441; in the temperature-adjusting heat exchanger 210, the working medium exchanges heat with water, the water enters the capillary network 240 again, and the capillary network 240 changes the indoor temperature through radiation heat transfer. The regulating valve 220 is a three-way proportional regulating valve, a converging port 223 of the regulating valve 220 is communicated with a water outlet pipe 442, a diverging port I221 of the regulating valve 220 is connected with a water inlet 213 of the temperature-regulating heat exchanger 210, and a diverging port II 222 of the regulating valve 220 is connected with a water supply pipe 441. The water flow loop is provided with a water pump 230 and an adjusting valve 220, the adjusting valve 220 is used for adjusting the water flow entering the temperature-adjusting heat exchanger 210 to exchange heat with the working medium, the water pump 230 is used for driving the water flow to move in the water flow loop, and in addition, an expansion tank 250 is arranged on the water flow loop. In addition, the capillary network 240 of the radiant temperature conditioning unit 200 is mounted on the indoor wall and can be replaced by other radiant heat transfer devices, such as radiant water panel walls and radiant water pipes.
it should be noted here that the temperature adjusting principle of the adjusting valve 220 is as follows: after the heat is transferred by the radiation of the water in the capillary network 240, the water flows out from the water outlet end 242 of the capillary network 240, enters the confluence port 223 of the regulating valve 220 through the water outlet pipe 442, is shunted at the confluence port 223, one path of water flows from the shunt port I221 to the water inlet 213 of the temperature regulating heat exchanger 210 through the water outlet pipe 442, exchanges heat with the working medium in the temperature regulating heat exchanger 210, then flows out from the water outlet 214, and enters the capillary network 240 through the water supply pipe 441 to perform heat transfer radiation indoors; the other flow is directly from the flow splitting port II 222 to the water supply pipe 441 and returns to the capillary network 240. Therefore, in a general view, the capillary network 240 controls the amount of water in which indoor radiant heat flows from the diversion port i 221 to the temperature-adjusting heat exchanger 210 for heat exchange, for example, the flow at the diversion port i 221 is increased by the regulating valve 220, and the flow at the diversion port ii 222 is reduced, so that the amount of water flowing in the capillary network 240 for heat exchange in the temperature-adjusting heat exchanger 210 is increased, thereby increasing the heat exchange amount of water flowing in the capillary network 240, and further increasing the radiant heat transfer amount in the capillary network 240; on the contrary, the regulating valve 220 reduces the flow at the first flow dividing port 221 and increases the flow at the second flow dividing port 222, and the water flow in the capillary network 240 to the temperature regulating heat exchanger 210 for heat exchange is reduced, so that the heat exchange amount of the water flow in the capillary network 240 is reduced, and further the radiation heat transfer amount in the capillary network 240 is reduced; the temperature in the room can thereby be controlled.
It should be noted that, in order to improve the adjustment accuracy of the adjustment valve 220, the water supply pipe 441 is provided with the water supply thermometer 260, the water supply thermometer 260 can measure the water temperature in the water supply pipe 441, and the adjustment valve 220 can adjust the radiant heat transfer capacity of the capillary network 240 according to the fed-back water temperature, thereby improving the indoor temperature control accuracy; in addition, the independent temperature control of the radiant temperature control unit 200 is realized by the method, and the working state of the compressor 110 of the outdoor unit 100 is not affected by the temperature control method in the adjusting process, so that the system can work more stably.
the fresh air unit 300 comprises a fresh air pipeline 310, the indoor space is communicated with the outdoor space through the fresh air pipeline 310, an induced draft fan 311 is arranged in the fresh air pipeline 310, and the induced draft fan 311 introduces outdoor air into the indoor space; a refrigerating heat exchanger 313, a reheating heat exchanger 314 and a humidifier 315 are sequentially arranged in the fresh air pipeline 310 along the flow direction of fresh air; in the embodiment, the refrigerating heat exchanger 313 is a tube-fin heat exchanger, a refrigerating heat exchanger outlet 313b of the refrigerating heat exchanger 313 is communicated with a C port of the four-way valve 140 through a pipeline I431, a refrigerating heat exchanger inlet 313a is connected with an outdoor main pipe 413, and a refrigerating heat exchanger outlet 313b is connected with a C port of the four-way valve 140; similarly, when four-way valve 140 is in use, the outlet 313b of the refrigeration heat exchanger may also be connected to the E port of four-way valve 140, the technical functions achieved by the two connection methods are not substantially different, and the E port and the C port of four-way valve 140 may be arbitrarily connected to one of the outdoor main pipe 413 and the outlet 313b of the refrigeration heat exchanger.
reheat heat exchanger inlet 314a is connected to discharge port 111 of compressor 110 and reheat heat exchanger outlet 314b is connected to working fluid port i 211. In the embodiment, an inlet 313a of the refrigeration heat exchanger is connected with a fulcrum I421 through a pipeline II 432, a pipeline I431 is provided with a one-way valve 318 along the working medium outflow direction of an outlet 313b of the refrigeration heat exchanger, and the working medium can only enter the refrigeration heat exchanger 313 from the inlet 313a of the refrigeration heat exchanger and can only flow out of the refrigeration heat exchanger 313 from the outlet 313b of the refrigeration heat exchanger; the refrigerating heat exchanger 313 is used for dehumidifying outdoor air, on one hand, in summer, the humidity of the outdoor air is high, if the outdoor air enters the room without proper dehumidification, the comfort of a user can be influenced to a certain extent, and because the specific heat capacity of water is high, the air contains more moisture, which is not beneficial to the regulation of the temperature of the subsequent fresh air; on the other hand, if the humidity of the fresh air entering the room is high in summer, the temperature of the water circulating in the capillary network 240 of the radiation temperature adjusting unit 200 is low, so that the condensation phenomenon is easily caused on the surface of the capillary network 240, and the operation and maintenance of the system are not facilitated. In addition, the humidifier 315 can humidify the fresh air in winter, and thus adjust the humidity of the indoor air.
In order to further improve the dehumidification effect and the dehumidification stability of the refrigeration heat exchanger 313, in this embodiment, a first thermometer 313T is disposed on the refrigeration heat exchanger 313, and a second thermometer 313bT is disposed on an outlet 313b of the refrigeration heat exchanger; an expansion valve III 320 is arranged on the pipeline II I432, the temperature measured by a first thermometer 313T is T1, the temperature measured by a second thermometer 313bT is T2, and the opening degree of the expansion valve III 320 is controlled, so that T2-T1 is 3-8 ℃, and the refrigeration heat exchanger 313 is guaranteed to have a good dehumidification effect.
The reheat heat exchanger 314 is a coil heat exchanger; a reheat heat exchanger inlet 314a of the reheat heat exchanger 314 is connected to the exhaust pipe 411 through a bypass pipe 433; an outlet 314b of the reheating heat exchanger 314 is connected with a fulcrum I421 through a reheating return pipe 434, an expansion valve II 319 is arranged on the reheating return pipe 434, and the expansion valve II 319 is an electronic expansion valve; the reheating heat exchanger 314 is used for adjusting the temperature of the reheated fresh air; in addition, in the embodiment, an environmental thermometer 321 and an air supply thermometer 317 are disposed in the fresh air unit 300, the environmental thermometer 321 is disposed at the air inlet 301 of the fresh air unit 300, that is, the air inlet 301 of the fresh air duct 310, and the air supply thermometer 317 is disposed at the air outlet 302 of the fresh air unit 300, that is, the air outlet 302 of the fresh air duct 310. In this embodiment, a dehumidification thermometer 316 is further disposed in the fresh air duct 310, the dehumidification thermometer 316 is disposed between the refrigeration heat exchanger 313 and the reheating heat exchanger 314, and the temperature of the fresh air humidified by the humidifier 315 can be monitored by using the dehumidification thermometer 317, so as to monitor the working state of the humidifier 315.
The fulcrum I421 is communicated with an S port of the four-way valve 140 through a pipeline III 435; in this embodiment, a pipe i 431 between the S port of the four-way valve 140 and the check valve 318 is provided with a supporting point ii 422, and the supporting point ii 422 is connected with the supporting point i 421 through a pipe iii 435. It should be noted that a filter screen 312 is further disposed in the fresh air duct 310, and the filter screen 312 is disposed in the fresh air duct 310 in front of the cooling heat exchanger 313 and is used for filtering impurities in the air entering the fresh air duct 310.
Example 2
As shown in fig. 4, the system of this embodiment is the same as embodiment 1, and this embodiment is the utility model discloses a fresh air-capillary network air combined conditioning system refrigeration process, when external environment is in summer or when indoor needs are in the state of lower temperature, the system begins the refrigeration process. The refrigeration process of the system is as follows:
As shown in fig. 1 to 3, the compressor 110 compresses the working medium to generate a high-temperature high-pressure gaseous working medium, the high-temperature high-pressure gaseous working medium is transported to the exhaust pipe 411, and then the gaseous working medium is divided into two paths, one path reaches the D port of the four-way valve 140, and the other path flows into the bypass pipe 433.
A. the path of the high temperature, high pressure gaseous working fluid in exhaust line 411 to port 140C of four-way valve is described herein. In this embodiment, the D port of the four-way valve 140 is communicated with the E port, so the gaseous working medium of this path flows into the outdoor main pipe 413 from the E port, and then enters the outdoor heat exchanger 120 through the outdoor main pipe 413, in this embodiment, the outdoor heat exchanger 120 is a condenser, and the high-temperature and high-pressure gaseous working medium is condensed into a high-temperature and high-pressure liquid working medium in the condenser, and phase transformation heat is released; then, the high-temperature high-pressure liquid working medium passes through the expansion valve I130, the expansion valve I130 reduces the pressure of the liquid working medium, the flow of the liquid working medium in the outdoor main pipe 413 is adjusted at the position, the high-temperature high-pressure liquid working medium is changed into a low-temperature low-pressure gas-liquid two-phase working medium, the low-temperature low-pressure gas-liquid two-phase working medium flows to the fulcrum I421 through the outdoor main pipe 413, the low-temperature low-pressure gas-liquid two-phase working medium at the fulcrum I421 is divided into two paths, one path enters the temperature-adjusting heat exchanger 210 for heat exchange.
a. Here, a path of the low-temperature low-pressure gas-liquid two-phase working medium entering the temperature-adjusting heat exchanger 210 at the fulcrum i 421 is described. The low-temperature low-pressure liquid working medium enters the pipeline III 435 and enters the temperature-adjusting heat exchanger 210 through the working medium port I211, and the low-temperature liquid working medium cools water in the temperature-adjusting heat exchanger 210, so that the water with lower temperature flows through the capillary network 240, indoor heat is taken away through absorption, and indoor refrigeration is achieved. The liquid working medium after heat exchange of the temperature-adjusting heat exchanger 210 forms a low-temperature low-pressure gaseous working medium, the low-temperature low-pressure gaseous working medium flows out from the working medium port II 212, then flows to the fulcrum II 422 through the pipeline III 435, and the low-temperature low-pressure gaseous working medium flows to the S port of the four-way valve 140 through the pipeline I431.
b. The way that the low-temperature and low-pressure liquid working medium at the pivot I421 enters the refrigeration heat exchanger 313 through the pipeline II 432 is described. The low-temperature low-pressure liquid working medium enters a refrigerating heat exchanger inlet 313a of the refrigerating heat exchanger 313 through a pipeline II 432 and is discharged from a refrigerating heat exchanger outlet 313 b. In this embodiment, the outlet 313b of the refrigeration heat exchanger is an evaporator, the working medium passing through the refrigeration heat exchanger 313 is changed from a low-temperature low-pressure liquid working medium into a low-temperature low-pressure gaseous working medium, the working medium undergoes phase change to absorb heat, the fresh air passing through the refrigeration heat exchanger 313 in the fresh air pipeline 310 absorbs heat to cool, and the steam is condensed in the process of cooling the fresh air, so as to dehumidify the fresh air. The low-temperature and low-pressure gaseous working medium flowing out of the refrigerating heat exchanger 313 from the outlet 313b of the refrigerating heat exchanger flows to the supporting point II 422, then flows to the port C of the four-way valve 140, then flows out of the port S, and enters the air suction port 112 of the compressor 110 through the outdoor return pipe 412.
B. It is described here that the high-temperature high-pressure gaseous working medium in the exhaust pipe 411 flows into the bypass pipe 433, the high-temperature high-pressure gaseous working medium flows into the inlet 314a of the reheat heat exchanger 314 through the bypass pipe 433, the gaseous working medium flows into the reheat heat exchanger 314 from the inlet 314a of the reheat heat exchanger for heat exchange, the fresh air dehumidified in the fresh air pipeline 310 exchanges heat with the high-temperature high-pressure gaseous working medium through the reheat heat exchanger 314, the fresh air obtains heat, the main purpose here is to adjust the temperature of the dehumidified fresh air, because the temperature of the fresh air deeply dehumidified by the refrigeration heat exchanger 313 is low, the fresh air directly flows into the room to cause discomfort of a user, so that the fresh air needs to be reheated, and the temperature of. The working medium after heat exchange with fresh air flows out of the outlet 314b of the reheating heat exchanger and flows to the expansion valve II 319 through the reheating return pipe 434, and the expansion valve II 319 converts the working medium into a low-temperature low-pressure liquid working medium. The low-temperature low-pressure liquid working medium is merged with the low-temperature low-pressure liquid working medium in the path Aa through the reheating return pipe 434, and then enters the temperature-adjusting heat exchanger 210, and the subsequent process is the same as that in the path Aa, and is not described again here.
It should be noted here that when the system is in a cooling operating state, the flow rate of the working medium flowing into the bypass pipe 433 in B determines the temperature of the fresh air reheated by the reheat heat exchanger 314, so that the final temperature of the fresh air can be controlled by controlling the opening degree of the expansion valve ii 319. In addition, the dehumidification temperature measured by the dehumidification thermometer 316 is T3, the preset dehumidification temperature is T3', the frequency of the compressor 110 is increased when T3' -T3>0, and the frequency of the compressor 110 is decreased when T3' -T3 < 0.
it is worth to be noted that, the summer fresh air temperature adjusting method of the fresh air-capillary network air combined adjusting system of the embodiment is as follows: the ratio of the flow of the working medium entering the reheat heat exchanger 314 from the exhaust port 111 of the compressor 110 to the total flow of the working medium discharged from the exhaust port 111 of the compressor 110 is K, according to an empirical formula: k is BXe ^ (0.05 XT send'), and B is 0.01-0.03. In this embodiment, the preset blowing temperature tded' is 22 ℃, B is 0.020, and K is 0.18 in this embodiment. Then regulating the flow of working media on the two branches by controlling the expansion valve I130 and the expansion valve II 319, and further controlling K to be 0.18; and then the system can enter a stable fresh air temperature regulation state. It should be noted that the empirical formula for adjusting the air supply temperature in summer does not relate to the ambient temperature, and the reason is that the external fresh air needs to be dehumidified in the summer fresh air treatment process, and the temperature of the dehumidified fresh air is generally stable.
Example 3
as shown in fig. 5, the system of this embodiment is the same as embodiment 1, and this embodiment is the utility model discloses a heating process of new trend-capillary network air combined conditioning system, when external environment is in winter or when indoor needs are in the state of higher temperature, the system begins the heating process. The system heating process comprises the following steps:
As shown in fig. 1 to 3, the compressor 110 compresses the working medium to generate a high-temperature high-pressure gaseous working medium, the high-temperature high-pressure gaseous working medium is transported to the exhaust pipe 411, and then the gaseous working medium is divided into two paths, one path reaches the D port of the four-way valve 140, and the other path flows into the bypass pipe 433.
A. The path of the high temperature, high pressure gaseous working fluid in exhaust line 411 to the C port of four-way valve 140 is described herein. In this embodiment, the D port of the four-way valve 140 is communicated with the C port, so that the gaseous working medium in the path flows into the pipeline i 431 from the C port, and then the gaseous working medium in the path flows to the fulcrum ii 422 through the pipeline i 431, because the pipeline i 431 leading to the outlet 313b of the refrigeration heat exchanger is provided with the one-way valve 318, the gaseous working medium cannot enter the outlet 313b of the refrigeration heat exchanger, and only flows to the working medium port ii 212 through the pipeline iii 435, and enters the temperature-adjusting heat exchanger 210 through the working medium port i 211, the water in the temperature-adjusting heat exchanger 210 is heated by the high-temperature and high-pressure gaseous working medium, so that the water with higher temperature flows through the capillary network 240, and radiates heat to the room, and further indoor heating is realized, the high-temperature and high-pressure liquid working medium is formed after heat exchange of the gaseous working medium in the temperature-adjusting heat exchanger 210 flows out from the working medium, the expansion valve I130 converts the working fluid into a low-temperature low-pressure liquid working fluid, the liquid working fluid reaches the outdoor heat exchanger 120 through the outdoor main pipe 413, the outdoor heat exchanger 120 is an evaporator in the embodiment, the low-temperature low-pressure liquid working fluid is evaporated into a low-temperature low-pressure gaseous working fluid in the evaporator and absorbs a large amount of heat, and the gaseous working fluid flows to an E port of the four-way valve 140; in this embodiment, the port D of the four-way valve 140 is connected to the port E, and the gaseous working medium flows from the port V to the port S, and then flows back to the suction port 112 of the compressor 110 through the outdoor return pipe 412 from the port S.
B. It describes that the gaseous state working medium of high temperature high pressure flows into that way in bypass pipe 433 in blast pipe 411 here, gaseous state working medium of high temperature high pressure flows into reheat heat exchanger entry 314a to reheat heat exchanger 314 through bypass pipe 433, flow into reheat heat exchanger 314 by reheat heat exchanger entry 314a and carry out the heat transfer, fresh air after the dehumidification takes place the heat exchange through reheat heat exchanger 314 and the gaseous state working medium of high temperature high pressure in fresh air pipeline 310, the fresh air obtains the heat, here main objective is to get into indoor fresh air to the outdoor heating, otherwise can influence indoor user's comfort. The working medium after heat exchange with fresh air flows out of the outlet 314b of the reheating heat exchanger and flows to the expansion valve II 319 through the reheating return pipe 434, and the expansion valve II 319 converts the working medium into a low-temperature low-pressure liquid working medium. The low-temperature low-pressure liquid working medium is merged with the low-temperature low-pressure liquid working medium in the path A through the reheating return pipe 434, and then enters the expansion valve I130 through the outdoor main pipe 413, and the subsequent processes are the same as those in the path A, and are not described again here.
It is worth to be noted that, the method for adjusting the temperature of the fresh air in winter of the fresh air-capillary network air combined adjustment system of the embodiment is as follows: the ambient temperature measured by the ambient thermometer 321 is T-ring; the ratio of the flow of the working medium entering the reheat heat exchanger 314 from the exhaust port 111 of the compressor 110 to the total flow of the working medium discharged from the exhaust port 111 of the compressor 110 is K, according to an empirical formula: k is Axe ^ [0.05 × (T send '-1.2T ring +8) ], A is 0.05-0.08, and T send' is the preset air supply temperature. In this example, ring T is 3 ℃, ring T is 25 ℃, ring a is 0.065, and ring K is 0.22. Then regulating the flow of working media on the two branches by controlling the expansion valve I130 and the expansion valve II 319, and further controlling K to be 0.22; and then the system can enter a stable fresh air temperature regulation state.
The invention has been described above in detail with reference to specific exemplary embodiments. It will, however, be understood that various modifications and changes may be made without departing from the scope of the invention as defined by the appended claims. The detailed description and drawings are to be regarded as illustrative rather than restrictive, and any such modifications and variations are intended to be included within the scope of the present invention as described herein. Furthermore, the background is intended to illustrate the present state of the art and the meaning of the present development and is not intended to limit the present invention or the present application and the field of application of the present invention.
More specifically, although exemplary embodiments of the invention have been described herein, the invention is not limited to these embodiments, but includes any and all embodiments modified, omitted, such as combinations between various embodiments, adapted changes and/or substitutions as would be recognized by those skilled in the art from the foregoing detailed description. The limitations in the claims are to be interpreted broadly based the language employed in the claims and not limited to examples described in the foregoing detailed description or during the prosecution of the application, which examples are to be construed as non-exclusive. Any steps recited in any method or process claims may be executed in any order and are not limited to the order presented in the claims. The scope of the invention should, therefore, be determined only by the appended claims and their legal equivalents, rather than by the descriptions and examples given above.
Claims (8)
1. A fresh air-capillary network air combined regulation system is characterized by comprising
An outdoor unit (100) including a compressor (110), an outdoor main pipe (413), and a four-way valve (140); an exhaust port (111) and an air suction port (112) of the compressor (110) are respectively connected with the four-way valve (140), an outdoor main pipe (413) is connected with an E port of the four-way valve (140), and the outdoor main pipe (413) is provided with an outdoor heat exchanger (120) and an expansion valve I (130);
The radiation temperature adjusting unit (200) comprises a temperature adjusting heat exchanger (210), an adjusting valve (220) and a capillary tube network (240), a working medium port I (211) of the temperature adjusting heat exchanger (210) is connected with an outdoor main pipe (413), a working medium port II (212) of the temperature adjusting heat exchanger (210) is connected with a port C of a four-way valve (140), a water flow loop is formed between the temperature adjusting heat exchanger (210) and the capillary tube network (240) through a water supply pipe (441) and a water outlet pipe (442), the adjusting valve (220) is arranged on the water flow loop, and the adjusting valve (220) is used for adjusting water flow entering the temperature adjusting heat exchanger (210);
The fresh air unit (300), the fresh air unit (300) includes a refrigeration heat exchanger (313) and a reheating heat exchanger (314); an inlet (313a) of the refrigeration heat exchanger is connected with an outdoor main pipe (413), and an outlet (313b) of the refrigeration heat exchanger is unidirectionally connected with a port C of the four-way valve (140); an inlet (314a) of the reheating heat exchanger is connected with an exhaust port (111) of the compressor (110), an outlet (314b) of the reheating heat exchanger is connected with a working medium port I (211), and an expansion valve II (319) is arranged on a pipeline between the outlet (314b) of the reheating heat exchanger and the working medium port I (211).
2. A combined fresh air-capillary network air conditioning system as claimed in claim 1, wherein the water inlet (213) of the thermoregulation heat exchanger (210) is connected with the water outlet (242) of the capillary network (240) through a water outlet pipe (442), and the water outlet (214) of the thermoregulation heat exchanger (210) is connected with the water inlet (241) of the capillary network (240) through a water supply pipe (441); the regulating valve (220) is a three-way proportional regulating valve, a confluence port (223) of the regulating valve (220) is communicated with a water outlet pipe (442), a branch port I (221) of the regulating valve (220) is connected with a water inlet (213) of the temperature-regulating heat exchanger (210), and a branch port II (222) of the regulating valve (220) is connected with a water supply pipe (441).
3. A combined fresh air-capillary network air conditioning system as claimed in claim 1, characterised in that the outdoor return pipe (412) is provided with an aspiration thermometer (417) and an aspiration manometer (418).
4. A combined fresh air-capillary network air conditioning system as claimed in claim 1, wherein a first thermometer (313T) is provided on the refrigerating heat exchanger (313), and a second thermometer (313bT) is provided on the refrigerating heat exchanger outlet (313 b); an expansion valve III (320) is arranged on a pipeline connecting an inlet (313a) of the refrigeration heat exchanger with the outdoor main pipe (413).
5. The fresh air-capillary network air combined conditioning system as claimed in claim 1, wherein a filter screen (312) is disposed at the air inlet (301) of the fresh air unit (300) for filtering impurities in the air entering the fresh air unit (300).
6. the combined fresh air-capillary network air conditioning system as claimed in claim 2, wherein the water supply pipe (441) is provided with a water supply thermometer (260).
7. The fresh air-capillary network air combined regulation system as claimed in claim 3, wherein an exhaust pipe (411) is arranged between the exhaust port (111) and the four-way valve (140), and an exhaust switch (414), an exhaust pressure gauge (415) and an exhaust temperature gauge (416) are arranged on the exhaust pipe (411).
8. The fresh air-capillary network air combined conditioning system as claimed in any one of claims 1 to 7, wherein the outdoor heat exchanger (120) and the refrigeration heat exchanger (313) are tube-fin heat exchangers; the reheating heat exchanger (314) is a coil type heat exchanger; the temperature-regulating heat exchanger (210) is a plate heat exchanger.
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| CN201920306424.9U CN209744650U (en) | 2019-03-11 | 2019-03-11 | Fresh air-capillary network air combined adjusting system |
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| CN201920306424.9U CN209744650U (en) | 2019-03-11 | 2019-03-11 | Fresh air-capillary network air combined adjusting system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109827304A (en) * | 2019-03-11 | 2019-05-31 | 南京慧和建筑技术有限公司 | A kind of fresh air-capillary network air joint regulating system and its winter or summer fresh air temperature control method |
| CN112178778A (en) * | 2020-09-30 | 2021-01-05 | 南京慧和建筑技术有限公司 | Anti-condensation method for air conditioner radiation tail end and multi-house space radiation tail end |
| CN112902307A (en) * | 2021-02-08 | 2021-06-04 | 南京慧和建筑技术有限公司 | Fresh air heat exchanger and air conditioning system comprising same |
-
2019
- 2019-03-11 CN CN201920306424.9U patent/CN209744650U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109827304A (en) * | 2019-03-11 | 2019-05-31 | 南京慧和建筑技术有限公司 | A kind of fresh air-capillary network air joint regulating system and its winter or summer fresh air temperature control method |
| CN112178778A (en) * | 2020-09-30 | 2021-01-05 | 南京慧和建筑技术有限公司 | Anti-condensation method for air conditioner radiation tail end and multi-house space radiation tail end |
| CN112178778B (en) * | 2020-09-30 | 2021-05-14 | 南京慧和建筑技术有限公司 | Anti-condensation method for air conditioner radiation tail end and multi-house space radiation tail end |
| WO2022068175A1 (en) * | 2020-09-30 | 2022-04-07 | 南京慧和建筑技术有限公司 | Condensation prevention methods for air conditioner radiation terminal and multi-room space radiation terminal |
| CN112902307A (en) * | 2021-02-08 | 2021-06-04 | 南京慧和建筑技术有限公司 | Fresh air heat exchanger and air conditioning system comprising same |
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