CN210861789U - Compressed air heat exchange system and air conditioner - Google Patents
Compressed air heat exchange system and air conditioner Download PDFInfo
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- CN210861789U CN210861789U CN201922093478.4U CN201922093478U CN210861789U CN 210861789 U CN210861789 U CN 210861789U CN 201922093478 U CN201922093478 U CN 201922093478U CN 210861789 U CN210861789 U CN 210861789U
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The utility model provides a compressed air heat transfer system and air conditioner, wherein, compressed air heat transfer system includes: a processor; the environment temperature sensor is electrically connected with the processor and used for detecting the environment temperature of the position where the compressed air heat exchange system is located; the body temperature sensor is electrically connected with the processor and is used for detecting the biological temperature in the indoor space; wherein, the operation that the treater is arranged in controlling the fan according to ambient temperature and biological temperature passes through the technical scheme of the utility model, avoided anti-cold wind phenomenon effectively, and the air-out temperature can be according to the biological difference in the indoor space and adjust, promoted biological body in the indoor space and felt the comfort level, heat the refrigeration moreover and all be the fresh air supply, be favorable to biological health.
Description
Technical Field
The utility model relates to an air conditioning equipment technical field particularly, relates to a compressed air heat transfer system and an air conditioner.
Background
The working principle of the existing air conditioner is mostly to adopt vapor compression type refrigeration, namely, the latent heat of phase change of a refrigerant is utilized to take away the cold or heat of a room. In the heating operation process of the air conditioner, because the temperature of the heat exchanger of the indoor unit needs a period of time to rise, the air conditioner is generally provided with a cold air prevention mode, but the set temperature in the cold air prevention mode is generally fixed and unchanged, so that different people feel different in air supply, and the comfort level of users is poor; in addition, most refrigerants are harmful to the environment, such as greenhouse effect, ozone layer holes and the like; meanwhile, if a person stays in an air-conditioning environment without fresh air for a long time, the health of the person can be affected.
SUMMERY OF THE UTILITY MODEL
The present invention aims at least solving one of the technical problems existing in the prior art or the related art.
In view of the above, an object of the present invention is to provide a compressed air heat exchange system;
it is still another object of the present invention to provide an air conditioner.
In order to achieve the above object, the utility model discloses technical scheme of the first aspect provides a compressed air heat transfer system, and compressed air heat transfer system includes: the heat exchanger comprises a first flow path and a second flow path which are arranged in parallel, and the first flow path is communicated with the outdoor space and the indoor space; the capacity adjusting assembly can adjust the temperature of the air flowing through the second flow path to enable the first flow path and the second flow path to exchange heat; a fan for driving the air of the first flow path to flow into the indoor space; a heater capable of heating air driven to the indoor space by the fan; a processor; the environment temperature sensor is electrically connected with the processor and used for detecting the environment temperature of the position where the compressed air heat exchange system is located; the body temperature sensor is electrically connected with the processor and is used for detecting the biological temperature in the indoor space; wherein, the treater is used for controlling the operation of fan according to ambient temperature and biological temperature.
In the technical scheme, the compressed air heat exchange system is convenient for detecting the ambient temperature and transmitting the ambient temperature to the processor by arranging the ambient temperature sensor; the body temperature sensor is arranged, so that the body temperature of organisms in the indoor space can be conveniently detected, or the temperature of the organisms can be conveniently detected; by arranging the heat exchanger which comprises the first flow path communicated with the indoor space and the outdoor space, outdoor fresh air can be fed into the indoor space, so that all the air for refrigeration and heating is supplied by fresh air, namely, all the air flowing into the indoor space is directly fed from the outdoor space, and the freshness of the indoor air is improved; the temperature of the air flowing through the second flow path is regulated by arranging the second flow path parallel to the first flow path and the capacity regulating assembly and compressing the air through the capacity regulating assembly, for example, the temperature of the air in the second flow path is increased during heating, and the air exchanges heat with the parallel first flow path, so that the temperature of the air in the first flow path is increased, and the temperature of the air entering the indoor space is increased to be close to the set outlet air temperature; the capacity adjusting assembly adjusts the temperature of the air of the second flow path by compressing the air, replaces a refrigerant, can reduce the harm of the refrigerant to the environment, and reduces the climate problems such as greenhouse effect, ozone cavity and the like; the fan is arranged to drive the first air to flow into the indoor space through the air inlet, so that the air flowing speed can be increased, the freshness of the indoor air is further improved, and the biological health condition is favorably improved.
The heat exchange system mainly utilizes the principle that the temperature of air can rise in the compression process, replaces the refrigerant in the prior art, and is beneficial to reducing the damage of the refrigerant to the environment and reducing the climate problems of greenhouse effect, ozone layer holes and the like; the first flow path of the heat exchanger of the compressed air heat exchange system is communicated with the outdoor space and the indoor space, so that indoor air and outdoor air can be exchanged, the freshness of the indoor air is improved, the retention time of organisms in an air-conditioning environment without fresh air is reduced, and the health condition of the organisms is improved; the first flow path and the second flow path can exchange heat, so that the air entering the room from the outside can be closer to the indoor air temperature and the biological temperature through heat exchange, and the body feeling comfort level of the organism is improved; the fan is arranged and can drive air to flow into the room along the first flow path, so that the air flow speed is increased; through the setting of heater, can heat the indoor air of entering for air programming rate further promotes biological body and feels the comfort level.
The air outlet temperature is determined according to the environment temperature and the biological temperature instead of directly determining the air outlet temperature according to the heating instruction, so that the temperature is closer to the biological temperature in the indoor space when air is outlet, and the air outlet temperature can be adjusted along with the biological temperature when the specific organisms in the indoor space are different, thereby being beneficial to improving the body feeling comfort level of the organisms.
It is understood that the living body of the present invention may include not only human but also various mammals, plants, etc. other than human.
Specifically, when a heating instruction is obtained, the air outlet temperature is determined according to the environment temperature and the biological temperature, so that the air outlet temperature is closer to the biological temperature in the indoor space on the basis of the environment temperature, and the body feeling comfort level of the organism is improved; it can be understood that since the air entering the indoor space is collected from the outdoor, the outlet air temperature is necessarily adjusted based on the outdoor temperature, and too much difference from the outdoor temperature results in excessive energy consumption; and the biology is in the indoor space, certain adaptability has been had to the temperature in indoor space, if air-out temperature and indoor temperature and biological temperature if differ too much, also can cause the decline of body to feel the comfort level, therefore, ambient temperature and biological temperature need be considered comprehensively to the air-out temperature, in order to promote the biological body in the indoor space to feel the comfort level, and when different biology is located the indoor space, the air-out temperature is different, or same biology is when being located the indoor space under different time quantums or different situation, air-out temperature also can all be adjusted correspondingly, thereby the flexibility of compressed air heat transfer system operation has been promoted, make air-out temperature can adapt to the individual condition of different biology more, further promote biological body to feel the comfort level.
It is noted that the ambient temperature includes, but is not limited to, outdoor temperature, indoor temperature.
Furthermore, the target air supply quantity is determined according to the heat productivity of the heater, the air inlet temperature and the air outlet temperature of the compressed air heat exchange system, and a fan in the compressed air heat exchange system is controlled to operate at the target air supply quantity, so that the body feeling comfort degree can be further improved; it can be understood that, because the power of the heater is different, the heating speed will be different, or the heating value is different, so the heating speed of the air entering the room is different, and there is a certain difference between the outlet air temperature and the inlet air temperature, so the actual outlet air temperature is not necessarily equal to the set outlet air temperature, so when the heating value of the heater is smaller, and the difference between the outlet air temperature and the inlet air temperature is larger, a smaller target air supply quantity can be set, and the problem that the body feeling comfort level is reduced because a large amount of air which is not heated to the set outlet air temperature is blown to the room is avoided; the heating value of the heater is large, or the air outlet temperature and the air inlet temperature have small difference, large target air supply quantity can be set, air close to the set air outlet temperature is blown to the indoor space, the body feeling comfort level is improved, and therefore the flexibility and the comfort level of the operation of the compressed air heat exchange system are improved.
It can be understood that the inlet air temperature and the outdoor temperature may be the same or different; for example, if the heater is provided at the inlet of the first flow path and heating is performed, the temperature of the intake air may be higher than the outdoor temperature.
In the above technical solution, the switching device is disposed on the second flow path, and the switching device is configured to switch a flow direction of the second flow path to switch between the cooling mode and the heating mode.
In the technical scheme, the switching device is arranged on the second flow path, so that the whole system can be switched between the cooling mode and the heating mode to meet different use requirements of users.
In the above technical solution, the method further comprises: and the air outlet temperature sensor is arranged at the air temperature flowing into the indoor space and is electrically connected with the processor, so that when the air outlet temperature determined by the air outlet temperature sensor is not less than the target air outlet temperature determined according to the environmental temperature and the biological temperature, the processor controls the switching device to be switched to the heating mode.
In the technical scheme, the current air temperature flowing into the indoor space, namely the air temperature flowing out of the first flow path, can be obtained through the air outlet temperature sensor, the current air outlet temperature is compared with the set air outlet temperature, and when the current air outlet temperature is greater than or equal to the air outlet temperature, the compressed air heat exchange system is controlled to operate in a heating mode, namely, the compressed air heat exchange system enters a conventional heating mode, so that the load of the compressed air heat exchange system is favorably reduced, and the energy consumption is reduced.
In addition, when the current temperature is less than the air-out temperature, the current air-out temperature is continuously obtained and compared with the air-out temperature, and then the operation mode of the compressed air heat exchange system is determined, so that the phenomenon that cold air enters the indoor space is reduced, and the body feeling comfort level of organisms in the indoor space is improved.
In the above technical solution, the method further comprises: and the processor is used for adjusting the rotating speed of the fan according to the change of the temperature of the heat exchanger determined by the heat exchange temperature sensor and controlling the fan to operate according to the adjusted rotating speed when the fan is in an operating state.
According to the technical scheme, the target rotating speed is determined according to the variation of the temperature of the heat exchanger in the first time through the real-time temperature of the heat exchanger acquired by the heat exchange temperature sensor, so that the flexibility of rotating speed adjustment can be improved, the target air supply quantity can be correspondingly adjusted along with the variation of the temperature of the heat exchanger, and the body sensing comfort level of organisms in the indoor space is improved; specifically, the larger the temperature change of the heat exchanger is in the first time, the faster the temperature change is, the closer the temperature change is to the set outlet air temperature, and the rotating speed of the fan can be timely increased, so that air close to the set outlet air temperature can quickly enter a room, and the body feeling comfort level of organisms is improved; the temperature of the heat exchanger changes less in the first time, the speed close to the set air outlet temperature is slower, the rotating speed of the fan can be timely reduced, the air quantity is reduced, the speed of air which is not close to the set air outlet temperature and entering the room is reduced, and therefore the body feeling comfort level of organisms is improved.
Further, the rotating speed of the fan is controlled to be uniformly adjusted to the target rotating speed within the second time, so that stable change of the target air supply amount is guaranteed, and the phenomenon that the comfort level is lowered due to the fact that the air amount is suddenly reduced is avoided.
In the technical scheme, the rotating speed and the temperature of the heat exchanger are in a linear relation.
In this technical scheme, set for rotational speed and heat exchanger temperature to be linear relation, be favorable to guaranteeing that the air-out temperature is steady, avoid the air-out temperature to neglect the height suddenly low to promote the biological body in the indoor space and feel the comfort level.
In the above technical solution, the ambient temperature specifically includes an indoor temperature and an outdoor temperature.
In this technical scheme, ambient temperature specifically includes indoor temperature and outdoor temperature, when confirming the air-out temperature like this, need comprehensively consider indoor temperature and outdoor temperature, the determination of air-out temperature promptly, will use outdoor temperature as the basis, the air temperature from outdoor collection has just so been considered, and can confirm indoor outer difference in temperature through indoor temperature, thereby be convenient for confirm whether to heat the outdoor air that gets into in the compressed air heat transfer system, and the power of heating, be favorable to reducing cold wind entering indoor like this, thereby promote the biological body in the indoor space and feel the comfort level.
Utility model among the above-mentioned technical scheme, ability adjusting part includes: the compressor and the expander are connected through a rotating shaft; the motor is used for driving the rotating shaft to rotate; the bearing is arranged at the joint of the compressor and the rotating shaft and the joint of the expander and the rotating shaft, the motor drives the rotating shaft to rotate, the compressor and the expander are driven to operate, the temperature of air entering the expander is raised through the temperature of the air entering the compressor, the temperature of the air entering the expander is reduced, the temperature of the air flowing through the second flow path is raised or reduced, and the first flow path and the second flow path exchange heat.
In the technical scheme, the compressor and the expander which are connected through the rotating shaft are arranged, and the motor drives the rotating shaft to rotate, so that the compressor and the expander can synchronously rotate, the number of the motors is reduced, and the structure is facilitated to be simplified; the joint of the compressor and the rotating shaft and the joint of the expander and the rotating shaft are both arranged on the bearings, so that the smoothness of the rotation of the compressor, the rotating shaft and the expander is improved, the abrasion of equipment is reduced, and the service life is prolonged; the compressor is arranged to compress air and raise the temperature and pressure of the air, so that the temperature of the air in the first flow path is raised and the amount of cold air entering the indoor space is reduced when the air exchanges heat with the air in the first flow path; the expander can expand air, reduce the temperature and pressure of the air, compensate partial work for the compressor and reduce energy consumption.
It can be understood that, in the heating mode, the compressor is used for raising the temperature and the pressure of the air of the second flow path, then the air of the first flow path is subjected to heat exchange to raise the temperature, and then the air of the second flow path is cooled and reduced in pressure through the expansion machine, so that partial work is compensated for the compressor, and the air after being cooled and reduced in pressure is discharged to the outdoor space, and the heat loss is reduced; and when in a refrigeration mode, the air in the second flow path is cooled and depressurized through the expander, the air after being cooled and depressurized and the outdoor air in the first flow path are subjected to heat exchange to be cooled, and then the air in the first flow path is heated and pressurized through the compressor and is discharged to the outdoor space, so that the loss of cold energy is reduced.
In the technical scheme, the bearing comprises a wave foil type foil bearing, and more particularly comprises a bearing seat, wherein a fixing groove is formed in the inner side wall of the bearing seat; the multi-layer foil is sleeved on the inner side of the bearing seat and provided with a fixing part, and the fixing part is matched with the fixing groove to fixedly connect the multi-layer foil with the bearing seat; the multilayer foil comprises a flat foil and a bubbling foil sleeved on the radial outer side of the flat foil; wherein the mounting direction of each layer of foil is opposite to the rotation direction of the bearing.
In this technical scheme, the wave foil type foil bearing is chooseed for use to the bearing, through the fixed slot that sets up on the bearing frame, sets up the fixed part on multilayer foil, and the cooperation between accessible fixed slot and the fixed part realizes the fixed of foil and bearing frame to reduce the run-out that takes place at the rotation in-process, in order to influence the normal use of bearing. The multi-layer foil comprises a flat foil and a bubbling foil, and the bubbling foil is sleeved outside the flat foil and is more favorable for generating a pressure air film during rotation, so that the rotating shaft is supported, and the stability of the high-speed rotation of the rotating shaft is improved.
In addition, the installation direction of the foil is opposite to the rotation direction of the bearing, so that the stable operation of the bearing is ensured. If the foil and the bearing are arranged in the same direction due to installation errors, the foil can be wound on the shaft to be clamped when the bearing is started, and the bearing cannot be used normally.
In the technical scheme, the bubbling foil comprises a plurality of arc sheets, the arc sheets are distributed at intervals along the circumferential direction of the bearing, the number of the flat foils is two, and the flat foils adjacent to the bubbling foil are connected with the arc sheets; or the bubbling foil is of an integrated structure, and the number of the flat foils is one layer.
In the technical scheme, the bubbling foil can be formed by a plurality of arc sheets which are distributed at intervals along the circumferential direction of the bearing, meanwhile, the flat foil is arranged adjacent to the bubbling foil, and the radial position of the bubbling foil is limited by the flat foil on the basis that the bubbling foil is arranged on the flat foil.
In addition, the bubbling foil can be of an integrated structure, the flat foil on the inner side of the bubbling foil is only one layer, the number of parts during installation can be reduced, the installation efficiency is improved, and meanwhile, the integral weight and the production cost of the bearing can be reduced on the basis of meeting the requirement of rotation.
The utility model discloses technical scheme of second aspect provides an air conditioner, include: a housing having a cavity therein; the compressed air heat exchange system in any one of the above technical solutions of the first aspect is disposed in the cavity.
In this technical solution, by adopting the compressed air heat exchange system according to any one of the above second aspects, all beneficial effects of the above technical solution are achieved, and are not described herein again; through setting up the casing in order to hold compressed air heat transfer system, can reduce external debris to compressed air heat transfer system's invasion and attack to reduce compressed air heat transfer system's trouble, promote compressed air heat transfer system job stabilization nature and reliability, still be convenient for transport, avoid spare part in disorder.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic flow chart of a control method according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a control method according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of a control method according to an embodiment of the present invention;
fig. 4 is a schematic flow chart of a control method according to an embodiment of the present invention;
fig. 5 is a schematic view of a heating principle of a compressed air heat exchange system according to an embodiment of the present invention;
fig. 6 is a schematic view of a foil bearing according to an embodiment of the invention;
FIG. 7 is a schematic side view of a foil bearing according to an embodiment of the invention;
fig. 8 is a block diagram of an air conditioner according to an embodiment of the present invention;
fig. 9 is a flowchart illustrating a control method according to an embodiment of the present invention.
Wherein, the correspondence between the reference numbers and the part names in fig. 5 to 8 is:
1 air conditioner, 10 compressed air heat exchange system, 100 outdoor temperature sensor, 102 indoor temperature sensor, 104 body temperature sensor, 106 heat exchanger, 1060 first flow path, 1062 second flow path, 108 capacity adjusting component, 1080 first four-way valve, 1081 expander, 1082 bearing, 1083 second four-way valve, 1084 motor, 1085 rotating shaft, 1086 compressor, 110 fan, 112 air outlet temperature sensor, 114 pipe temperature sensor, 120 bearing seat, 1202 fixed slot, 122 flat foil, 124 bubbling foil, 14 shell, 200 indoor space.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings, which are illustrated in the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Some embodiments according to the invention are described below with reference to fig. 1 to 9.
Example 1
As shown in fig. 1, the control method according to an embodiment of the present invention is used for a compressed air heat exchange system, including:
step S100: acquiring a heating instruction, and determining the ambient temperature and the biological temperature corresponding to the compressed air heat exchange system according to the heating instruction;
step S102: determining the air outlet temperature according to the environmental temperature and the biological temperature;
step S104: determining a target air supply quantity according to the heat productivity of the heater, the inlet air temperature and the outlet air temperature of the compressed air heat exchange system;
step S106: and controlling a fan in the compressed air heat exchange system to operate at a target air supply amount.
In the embodiment, the air outlet temperature is determined according to the environment temperature and the biological temperature instead of directly determining the air outlet temperature according to the heating instruction, so that the temperature is closer to the biological temperature in the indoor space when air is outlet, and the air outlet temperature can be adjusted along with the difference of specific organisms in the indoor space, thereby being beneficial to improving the comfort of the organisms.
It is understood that the living creatures of the present invention may include not only humans, but also various mammals, oviparous animals, plants, and the like other than humans.
Specifically, the utility model discloses a control method, when obtaining the heating instruction, confirm the air-out temperature according to ambient temperature and biological temperature, can make the air-out temperature more be close to biological temperature on ambient temperature's basis to promote biological body and feel comfort level; it can be understood that since the air entering the indoor space is collected from the outdoor, the outlet air temperature is necessarily adjusted based on the outdoor temperature, and too much difference from the outdoor temperature results in excessive energy consumption; and the biology is in the indoor space, certain adaptability has been had to the temperature in indoor space, if air-out temperature and indoor temperature and biological temperature if differ too much, also can cause the decline of body to feel the comfort level, therefore, ambient temperature and biological temperature need be considered comprehensively to the air-out temperature, in order to promote the biological body in the indoor space to feel the comfort level, and when different biology is located the indoor space, the air-out temperature is different, or same biology is when being located the indoor space under different time quantums or different situation, air-out temperature also can all be adjusted correspondingly, thereby the flexibility of compressed air heat transfer system operation has been promoted, make air-out temperature can adapt to the individual condition of different biology more, further promote biological body to feel the comfort level.
It is noted that the ambient temperature includes, but is not limited to, outdoor temperature, indoor temperature.
Furthermore, the target air supply quantity is determined according to the heat productivity of the heater, the air inlet temperature and the air outlet temperature of the compressed air heat exchange system, and a fan in the compressed air heat exchange system is controlled to operate at the target air supply quantity, so that the body feeling comfort degree can be further improved; it can be understood that, because the power of the heater is different, the heating speed will be different, or the heating value is different, so the heating speed of the air entering the room is different, and there is a certain difference between the outlet air temperature and the inlet air temperature, so the actual outlet air temperature is not necessarily equal to the set outlet air temperature, so when the heating value of the heater is smaller, and the difference between the outlet air temperature and the inlet air temperature is larger, a smaller target air supply quantity can be set, and the problem that the body feeling comfort level is reduced because a large amount of air which is not heated to the set outlet air temperature is blown to the room is avoided; the heating value of the heater is large, or the air outlet temperature and the air inlet temperature have small difference, large target air supply quantity can be set, air close to the set air outlet temperature is blown to the indoor space, the body feeling comfort level is improved, and therefore the flexibility and the comfort level of the operation of the compressed air heat exchange system are improved.
It can be understood that the inlet air temperature and the outdoor temperature may be the same or different; for example, if the heater is provided at the inlet of the first flow path and heating is performed, the temperature of the intake air may be higher than the outdoor temperature.
Example 2
As shown in fig. 2, a control method according to another embodiment of the present invention includes:
step S200: acquiring a heating instruction, and determining the ambient temperature and the biological temperature corresponding to the compressed air heat exchange system according to the heating instruction;
step S202: determining the air outlet temperature according to the environmental temperature and the biological temperature;
step S204: determining a target air supply quantity according to the heat productivity of the heater, the inlet air temperature and the outlet air temperature of the compressed air heat exchange system;
step S206: determining a first rotating speed corresponding to a fan in a compressed air heat exchange system according to the target air supply quantity;
step S208: controlling the fan to operate at a first rotating speed;
step S210: determining the temperature of the heat exchanger when the fan is in an operating state;
step S212: determining the variation of the temperature of the heat exchanger in a first time;
step S214: determining a target rotating speed according to the variable quantity;
step S216: and controlling the rotating speed of the fan to be uniformly adjusted to the target rotating speed within the second time.
It should be pointed out, in this embodiment, the rotational speed and the heat exchanger temperature of fan are the linear relation, are favorable to guaranteeing that the air-out temperature is steady like this, avoid the air-out temperature to neglect high suddenly low to promote the biological body in the indoor space and feel the comfort level.
In the embodiment, as the outdoor air mainly enters the room through the fan drive, the first rotating speed corresponding to the fan in the compressed air heat exchange system is determined according to the target air supply quantity, and the fan is controlled to operate at the first rotating speed, so that the stability and the reliability of the target air supply quantity can be ensured, the stable air outlet temperature can be ensured, the air outlet speed, the air quantity and the temperature can be prevented from being suddenly changed, and the body feeling comfort level of organisms can be improved; the heat exchange of the first flow path and the second flow path is continuously carried out, and the heater continuously heats the air entering the indoor space, for example, the temperature of the heat exchanger can be gradually increased when the air conditioner operates for the first time, so that the temperature of the air entering the indoor space is gradually close to the set air outlet temperature, the rotating speed of the fan can be adjusted, the fan is controlled to operate according to the new rotating speed, the adjustment of the target air supply amount is realized, and the body sensing comfort level of organisms in the indoor space is improved.
Furthermore, due to the fact that the power of the heater is different and the temperature of air in the second flow path is different, the temperature of the heat exchanger can be changed differently within the first time, the target rotating speed is determined according to the variation of the temperature of the heat exchanger within the first time, the flexibility of rotating speed adjustment can be improved, the target air supply quantity can be adjusted correspondingly along with the variation of the temperature of the heat exchanger, and therefore the body feeling comfort level of organisms in the indoor space is improved; furthermore, the rotating speed of the fan is controlled to be uniformly adjusted to the target rotating speed within the second time, so that the target air supply quantity can be stably changed, and the phenomenon that the comfort level is lowered due to the fact that the air quantity is suddenly reduced is avoided.
Example 3
As shown in fig. 3, a control method according to another embodiment of the present application includes:
step S300: acquiring a heating instruction, and determining the ambient temperature and the biological temperature corresponding to the compressed air heat exchange system according to the heating instruction;
step S302: determining the air outlet temperature according to the environmental temperature and the biological temperature;
step S304: determining a target air supply quantity according to the heat productivity of the heater, the inlet air temperature and the outlet air temperature of the compressed air heat exchange system;
step S306: controlling a fan in a compressed air heat exchange system to operate at a target air supply amount;
step S308: acquiring the current air outlet temperature of a compressed air heat exchange system;
step S310: determining whether the current air outlet temperature is lower than the air outlet temperature or not, and generating a judgment result;
step S312: if not, controlling the compressed air heat exchange system to operate in a heating mode corresponding to the heating instruction;
step S314: if so, determining the operation mode of the compressed air heat exchange system according to the current air outlet temperature and the air outlet temperature of the compressed air heat exchange system acquired after the third time.
In the embodiment, the current air-out temperature is compared with the set air-out temperature, and when the current air-out temperature is greater than or equal to the air-out temperature, namely when the judgment result is negative, the compressed air heat exchange system is controlled to operate in a heating mode corresponding to a heating instruction, namely, the compressed air heat exchange system enters a conventional heating mode, so that the load of the compressed air heat exchange system is reduced, and the energy consumption is reduced; when the current temperature is lower than the air outlet temperature, namely when the judgment result is yes, the current air outlet temperature is continuously obtained and compared with the air outlet temperature, and then the operation mode of the compressed air heat exchange system is determined, so that the phenomenon that cold air enters the indoor space is reduced, and the body feeling comfort level of organisms in the indoor space is improved.
In the above embodiments, the ambient temperature specifically includes an indoor temperature and an outdoor temperature.
Example 4
As shown in fig. 4, the control method according to an embodiment of the present invention is used for a compressed air heat exchange system, including:
step S400: acquiring a heating instruction, and determining an outdoor ambient temperature, an indoor ambient temperature and a biological temperature corresponding to the compressed air heat exchange system according to the heating instruction;
step S402: determining the air outlet temperature according to the outdoor environment temperature, the indoor environment temperature and the biological temperature;
step S404: determining a target air supply quantity according to the heat productivity of the heater, the inlet air temperature and the outlet air temperature of the compressed air heat exchange system;
step S406: and controlling a fan in the compressed air heat exchange system to operate at a target air supply amount.
In this embodiment, according to outdoor ambient temperature, indoor ambient temperature and biological temperature confirm the air-out temperature, the affirmation of air-out temperature promptly, outdoor ambient temperature has been considered comprehensively, the three parameter of indoor ambient temperature and biological temperature, the influence that biology received in whole big environment has been fully considered, make the air-out temperature not only be close to biological temperature, promote biological body and feel the comfort level, can also promote biology to indoor environment, the adaptability of outdoor environment, make biology when indoor environment, when round trip movement in the outdoor environment, can adapt to external environment rapidly, further promote biological adaptability to different environment, thereby can promote biological body and feel the comfort level in a plurality of environments.
Example 5
As shown in fig. 5, an embodiment of the second aspect of the present invention provides a compressed air heat exchange system 10, including: a memory (not shown), a processor (not shown), an ambient temperature sensor including an indoor temperature sensor 102 and an outdoor temperature sensor 100, a body temperature sensor 104, a heat exchanger 106, a capacity adjustment assembly 108, and a fan 110; a tube temperature sensor 114 is also disposed on the heat exchanger 106 for detecting the temperature of the heat exchanger 106.
Specifically, the ambient temperature sensor is electrically connected to the processor, and the ambient temperature sensor is configured to detect an ambient temperature at a location where the compressed air heat exchange system 10 is located, and feed the ambient temperature back to the processor; the body temperature sensor 104 is electrically connected with the processor, and the body temperature sensor 104 is used for detecting the biological temperature in the indoor space 200 and feeding back the biological temperature to the processor; the heat exchanger 106 includes a first flow path 1060 and a second flow path 1062 arranged in parallel, one end of the first flow path 1060 is provided with an air inlet to communicate with the outdoor space and receive outdoor air, the other end of the first flow path 1060 is connected to the indoor space 200, and a heater (not shown) is arranged on a portion of the first flow path 1060 close to the indoor space 200, but of course, the heater may be arranged at other positions of the first flow path 1060, such as the air inlet; the second flow path 1062 similarly communicates the indoor space 200 and the outdoor space; the capacity adjustment assembly 108 is communicated with the second flow path 1062, and the capacity adjustment assembly 108 can adjust the temperature of the air flowing through the second flow path 1062 by compressing the air; the blower 110 is used for driving the air of the first flow path 1060 to enter the indoor space 200 through the air inlet, wherein the memory stores a computer program that can be run on the processor, and the processor executes the computer program to implement the steps of the control method according to any one of the above embodiments.
More specifically, as shown in fig. 5, capacity adjustment assembly 108 includes first and second four-way valves 1080 and 1083 (i.e., switching devices), a compressor 1086 and an expander 1081 connected by a shaft 1085, a motor 1084, and a bearing 1082, as shown in fig. 6, bearing 1082 is journaled on shaft 1085 by a bearing housing 120.
The motor 1084 is used for driving the rotating shaft 1085 to rotate; bearings 1082 are arranged at the joint of the rotating shaft 1085 and the compressor 1086 and the joint of the rotating shaft 1085 and the expander 1081; the motor 1084 drives the rotating shaft 1085 to rotate, so as to drive the compressor 1086 and the expansion machine 1081 to operate, the temperature of the air entering the expansion machine 1081 is raised by the temperature of the air entering the compressor 1086, so that the temperature of the air flowing through the second flow path 1062 is raised or lowered, and the first flow path 1060 and the second flow path 1062 exchange heat.
As shown in fig. 5, specifically, during heating, indoor air enters the compressor 1086 through the second flow path 1062 via the first four-way valve 1080, after raising the temperature and raising the pressure, enters the heat exchanger 106 through the second flow path 1062 via the second four-way valve 1083, exchanges heat with outdoor air in the first flow path 1060 for cooling, enters the expander 1081 through the first four-way valve 1080, lowers the temperature and the pressure, and then is discharged to the outdoor through the second four-way valve 1083; meanwhile, the fresh air at a lower temperature outdoors passes through the fresh air heat exchanger 106 through the first flow path 1060 under the action of the fan 110, exchanges heat with the high-temperature air in the second flow path 1062, and is sent indoors to heat the room.
During cooling, the air flow direction in the first flow path 1060 is the same as the air flow direction in the heating mode, and the air flow direction in the second flow path 1062 is different, specifically, during cooling, the air in the second flow path 1062 flows to the expander 1081 to be cooled and depressurized, and then exchanges heat with the air in the first flow path 1060 through the heat exchanger 106 to be heated, and the air in the first flow path 1060 is cooled; the air in the second flow path 1062 after the temperature rise is further flowed to the compressor 1086, the temperature rise and the pressure rise are performed, and then, the air is discharged to the outside.
Note also that the bearing 1082 in the present embodiment employs a bump foil type foil bearing. The wave foil type foil bearing is used, a pressure air film for dynamic pressure lubrication is generated by means of high-speed relative motion between a shaft and the bearing 1082, the assembly requirement is low, the rotor misalignment is prevented, and the stability at high speed is good. Compared with a static pressure gas bearing and a magnetic suspension bearing, the structure is simpler, the cost is lower, and the air conditioner is more suitable for household air conditioners.
More specifically, as shown in fig. 7, the bearing is a bump foil type foil bearing, the fixing groove 1202 is formed in the bearing seat 120, the fixing portion is formed in the multilayer foil, and the fixing of the foil and the bearing seat 120 can be achieved through the fit between the fixing groove 1202 and the fixing portion, so that the radial run-out generated in the rotation process is reduced, and the normal use of the bearing is affected. The multi-layer foil comprises a flat foil 122 and a bubbling foil 124, and the bubbling foil 124 is sleeved outside the flat foil 122, so that a pressure air film is generated during rotation, support is provided for the rotating shaft, and the stability of high-speed rotation of the rotating shaft is improved.
In addition, the installation direction of the foil is opposite to the rotation direction of the bearing, so that the stable operation of the bearing is ensured. If the foil and the bearing are arranged in the same direction due to installation errors, the foil can be wound on the shaft to be clamped when the bearing is started, and the bearing cannot be used normally.
It should be noted that the blister foil 124 may be formed by a plurality of arc pieces spaced along the circumferential direction of the bearing, and the flat foil 122 is disposed adjacent to the blister foil 124, and the radial position of the blister foil 124 is limited by the flat foil 122 on the basis that the blister foil 124 is disposed on the flat foil 122.
In addition, the blister foil 124 may be an integrated structure, and the flat foil 122 on the inner side of the blister foil 124 is only one layer, so that the number of parts during installation can be reduced, the installation efficiency can be improved, and the weight and the production cost of the whole bearing can be reduced on the basis of satisfying the rotation.
In this embodiment, the steps of the control method according to any one of the embodiments of the first aspect described above are implemented when the computer program is executed by the processor, so that all the beneficial effects of the embodiments described above are achieved, and details are not described herein again.
Further, the compressor 1086 and the expander 1081 are connected by the rotating shaft 1085, and the motor 1084 drives the rotating shaft 1085 to rotate, so that the compressor 1086 and the expander 1081 can rotate synchronously, the number of the motors 1084 is reduced, and the structure is simplified; bearings 1082 are arranged at the joint of the compressor 1086 and the rotating shaft 1085 and the joint of the expander 1081 and the rotating shaft 1085, so that the smoothness of rotation of the compressor 1086, the rotating shaft 1085 and the expander 1081 is improved, the abrasion of equipment is reduced, and the service life is prolonged; the compressor 1086 is configured to compress air to raise the temperature and pressure of the air, so as to raise the temperature of the air in the first flow path 1060 during heat exchange with the air in the first flow path 1060, and reduce the amount of cold air entering the indoor space 200; the expander 1081 is configured to expand air, reduce the temperature and pressure of the air, compensate part of work for the compressor 1086, and reduce energy consumption.
In this embodiment, the pressure ratio between the expander 1081 and the compressor 1086 is less than 3, ensuring optimal system efficiency. The pressure ratio is larger and the energy efficiency of the system is reduced.
Example 6
As shown in fig. 8, an embodiment of the third aspect of the present invention provides an air conditioner 1, including: a housing 14 having a cavity therein; the compressed air heat exchange system 10 of any of the embodiments of the second aspect is disposed in the cavity.
In this embodiment, by using the compressed air heat exchange system 10 according to any one of the embodiments of the second aspect, all the beneficial effects of the embodiments are achieved, and are not described herein again; through setting up casing 14 in order to hold compressed air heat transfer system 10, can reduce the invasion and attack of external debris to compressed air heat transfer system 10 to reduce compressed air heat transfer system 10's trouble, promote compressed air heat transfer system 10 job stabilization nature and reliability, still be convenient for transport, avoid spare part to be in disorder.
Example 7
Embodiments of the fourth aspect of the present invention provide a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the control method according to any one of the embodiments of the first aspect.
In this embodiment, the steps of the control method in any one of the embodiments of the first aspect are implemented when the computer program is executed by the processor, so that all the beneficial effects of the embodiments are achieved, and details are not described herein.
According to the control method of preventing cold wind of an embodiment that this application proposes, there is an indoor temperature sensor 102 in the room where the air conditioner 1 is installed, used for detecting the indoor ambient temperature T1; a body temperature sensor 104, such as an image acquisition device or an infrared sensor, for detecting a human body temperature Tb, thereby judging the comfort level of the human body; the fresh air heat exchanger 106 is provided with a tube Temperature sensor 114 for detecting the Temperature T2 of the heat exchanger 106, an outdoor Temperature sensor 100 for detecting the outdoor ambient Temperature T3, and a PTC (Positive Temperature Coefficient) electric auxiliary heating element and an outlet air Temperature sensor 112 are arranged at the outlet of the air conditioner 1 to detect the current outlet air Temperature.
As shown in fig. 9, the specific workflow is as follows:
step S500: detecting the indoor environment temperature T1, the outdoor environment temperature T3 and the human body temperature Tb of the air conditioner, and calculating the optimal air outlet temperature value by means of big data according to the numerical values of T1, T3 and Tb;
therefore, hot air blown out by the air conditioner can be matched with the ambient temperature and the body feeling temperature of a human body, and the optimal use experience is guaranteed;
step S502: starting PTC electric auxiliary heat of the air conditioner, and calculating air supply volume (namely target air supply volume) according to PTC heat productivity Q, the optimal air outlet temperature value and air inlet temperature;
it should be noted that the air inlet is not provided with a heating device, so the air inlet temperature is the outdoor ambient temperature T3.
Step S504: calculating the corresponding rotating speed of the fan according to the air supply quantity, wherein the rotating speed is used as the initial rotating speed of the fan;
step S506: detecting the temperature T2 of the fresh air heat exchanger;
step S508: the rotating speed of the fan is linearly increased along with the increase of the temperature T2 of the fresh air heat exchanger, so that the air outlet temperature is ensured to be stable, and the air outlet temperature is prevented from being suddenly high or low;
step S510: detecting whether the temperature of the air inlet reaches an optimal air outlet temperature value or not;
step S512: if so, exiting the cold air prevention mode;
step S514: otherwise, the temperature of the air outlet is periodically detected.
As shown in fig. 5, the system of the present embodiment is composed as follows:
pressure boost inflation all-in-one: the turbo expander 1081 and the centrifugal compressor 1086 are coaxially connected, a high-speed motor 1084 is provided in the middle, and a bearing 1082 is a wave foil type foil bearing. Compressor 1086 increases inlet air pressure and temperature; the expander 1081 is pushed by the air, compensating for some work to the compressor 1086 via the shaft 1085, with the air temperature decreasing.
The switching of the cooling/heating cycle is completed by switching of first four-way valve 1080 and second four-way valve 1083.
A heating process: indoor air enters the compressor 1086 through the first four-way valve 1080, enters the fresh air heat exchanger 106 through the second four-way valve 1083 after being heated and pressurized, enters the expansion machine 1081 through the first four-way valve 1080 after being cooled, and is discharged outdoors through the second four-way valve 1083 after being cooled and depressurized. Meanwhile, the fresh air with lower outdoor temperature is heated after passing through the fresh air heat exchanger 106 under the action of the fan 110, and is sent into the room to heat the room.
The specific embodiment has the following beneficial effects:
1. the air conditioner effectively avoids the cold air prevention phenomenon; the cold-proof set temperature value can be changed with different creatures.
2. The air is used as the refrigerant, so that the pollution is reduced, and the use is convenient.
3. The system has low pressure (less than 3bar), reliable operation and long service life.
4. The dynamic pressure gas bearing (namely the bump foil type foil bearing) is used, a pressure gas film for dynamic pressure lubrication is generated by means of high-speed relative motion between a shaft and the bearing, the assembly requirement is low, the rotor misalignment is prevented, and the stability at high speed is good. Compared with a static pressure gas bearing and a magnetic suspension bearing, the structure is simpler, the cost is lower, and the air conditioner is more suitable for household air conditioners.
5. The refrigeration and heating are all fresh air supply, during refrigeration, return air directly passes through the expansion machine for expansion, and part of cold energy is recovered and then is discharged outdoors by the compressor; during heating, return air is directly expanded by the compressor, partial heat is recovered, and the heat is discharged to the outside by the expander.
6. The indoor side does not have the heat exchanger, and the supply-air outlet can install and set to other forms, more accords with the decoration style in room.
Above combine the figure to explain in detail the technical scheme of the utility model, through the technical scheme of the utility model, make the air conditioner before formally heating, avoided preventing the cold wind phenomenon effectively, and the air-out temperature can be according to the biological difference in the indoor space and adjust, promoted biological body in the indoor space and felt the comfort level, heat the refrigeration moreover and all be fresh air supply, be favorable to biological health.
In the present application, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or unit indicated must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.
In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. 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 (10)
1. A compressed air heat exchange system, comprising:
the heat exchanger comprises a first flow path and a second flow path which are arranged in parallel, and the first flow path is communicated with the outdoor space and the indoor space;
the capacity adjusting assembly can adjust the temperature of the air flowing through the second flow path to enable the first flow path and the second flow path to exchange heat;
a fan for driving the air of the first flow path to flow into the indoor space;
a heater capable of heating air driven to the indoor space by the fan;
a processor;
the environment temperature sensor is electrically connected with the processor and is used for detecting the environment temperature of the position where the compressed air heat exchange system is located;
the body temperature sensor is electrically connected with the processor and is used for detecting the biological temperature in the indoor space;
wherein the processor is configured to control operation of the fan based on the ambient temperature and the biological temperature.
2. The compressed air heat exchange system of claim 1, further comprising:
and the switching device is arranged on the second flow path and is used for switching the flow direction of the second flow path so as to switch the compressed air heat exchange system between a cooling mode and a heating mode.
3. The compressed air heat exchange system of claim 2, further comprising:
the air outlet temperature sensor is arranged at the air temperature flowing into the indoor space and electrically connected with the processor, so that when the air outlet temperature determined by the air outlet temperature sensor is not less than the target air outlet temperature determined according to the environment temperature and the biological temperature, the processor controls the switching device to switch to the heating mode.
4. The compressed air heat exchange system of claim 1, further comprising:
the heat exchange temperature sensor is arranged in the heat exchanger and electrically connected with the processor, and the processor is used for adjusting the rotating speed of the fan according to the change of the temperature of the heat exchanger determined by the heat exchange temperature sensor and controlling the fan to operate according to the adjusted rotating speed when the fan is in an operating state.
5. The compressed air heat exchange system of claim 4,
the rotation speed and the temperature of the heat exchanger are in a linear relation.
6. The compressed air heat exchange system according to claim 1, wherein the ambient temperature comprises in particular an indoor temperature and an outdoor temperature.
7. The compressed air heat exchange system of claim 1, wherein the capacity modulation assembly comprises:
the compressor and the expander are connected through a rotating shaft;
the motor is used for driving the rotating shaft to rotate;
the bearing, set up in the compressor with the junction of pivot, and the expander with the junction of pivot, motor drive the pivot rotates, drives the compressor with the expander operation is through getting into the air of compressor intensification, gets into the air cooling of expander, so that flow through the air of second flow path intensifies or cools down, and makes first flow path with the heat transfer of second flow path.
8. The compressed air heat exchange system of claim 7, wherein the bearing comprises a foil wave bearing, the foil wave bearing comprising:
the bearing seat is provided with a fixing groove on the inner side wall;
the multilayer foil is sleeved on the inner side of the bearing seat and provided with a fixing part, and the fixing part is matched with the fixing groove to fixedly connect the multilayer foil with the bearing seat; the multilayer foil comprises a flat foil and a bubbling foil sleeved on the radial outer side of the flat foil;
wherein the mounting direction of each layer of the foil is opposite to the rotation direction of the bearing.
9. The compressed air heat exchange system of claim 8,
the bubbling foil comprises a plurality of arc sheets, the arc sheets are distributed at intervals along the circumferential direction of the bearing, the number of the flat foils is two, and the flat foils adjacent to the bubbling foil are connected with the arc sheets; or
The bubbling foil is of an integrated structure, and the number of the flat foils is one.
10. An air conditioner, comprising:
a housing having a cavity therein;
a compressed air heat exchange system according to any one of claims 1 to 9 disposed within the cavity.
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| CN201922093478.4U CN210861789U (en) | 2019-11-28 | 2019-11-28 | Compressed air heat exchange system and air conditioner |
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| CN201922093478.4U CN210861789U (en) | 2019-11-28 | 2019-11-28 | Compressed air heat exchange system and air conditioner |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112460766A (en) * | 2020-12-01 | 2021-03-09 | 珠海格力电器股份有限公司 | Cold air prevention control method, device, equipment and readable medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112460766A (en) * | 2020-12-01 | 2021-03-09 | 珠海格力电器股份有限公司 | Cold air prevention control method, device, equipment and readable medium |
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