CN112066581A - Refrigerating system and method and refrigerating equipment - Google Patents
Refrigerating system and method and refrigerating equipment Download PDFInfo
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- CN112066581A CN112066581A CN202010998235.XA CN202010998235A CN112066581A CN 112066581 A CN112066581 A CN 112066581A CN 202010998235 A CN202010998235 A CN 202010998235A CN 112066581 A CN112066581 A CN 112066581A
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000001816 cooling Methods 0.000 claims abstract description 133
- 238000005057 refrigeration Methods 0.000 claims abstract description 105
- 239000003507 refrigerant Substances 0.000 claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 36
- 239000002356 single layer Substances 0.000 claims description 28
- 239000010410 layer Substances 0.000 claims description 22
- 230000005494 condensation Effects 0.000 claims description 5
- 238000009833 condensation Methods 0.000 claims description 5
- 238000003860 storage Methods 0.000 claims description 4
- 238000004590 computer program Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 25
- 230000009286 beneficial effect Effects 0.000 abstract 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/04—Condensers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2339/00—Details of evaporators; Details of condensers
- F25B2339/04—Details of condensers
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Abstract
The invention discloses a refrigeration system, a refrigeration method and refrigeration equipment. Wherein, this system includes: the condenser is internally embedded with the natural cooling coil; wherein, the condensing coil, the compressor and the evaporator form a compressor refrigeration loop; and the natural cooling coil, the refrigerant pump and the intermediate heat exchanger form a natural cooling loop. The invention can save the space of the condenser, is beneficial to the heat exchange between the condensing coil and the natural cooling coil, and improves the refrigeration effect of the whole refrigeration system.
Description
Technical Field
The invention relates to the technical field of refrigeration, in particular to a refrigeration system, a refrigeration method and refrigeration equipment.
Background
Aiming at the current market and refrigeration technical conditions, various refrigeration manufacturers have developed and put forward natural cooling air conditioner products. The condenser of natural cooling on the market at present mainly has two kinds of structures, one is upper and lower structure, and another kind is front and back structure, and the cooling coil and the natural cooling coil of above-mentioned two kinds of condenser's structure, condenser are all discrete. The structure can increase the volume and the weight of the unit, and the energy consumption of the unit is increased without utilizing a condenser for heat exchange.
The condensing coil and the natural cooling coil are separately arranged in the prior art, so that the problems of large occupied space and poor heat exchange effect are solved.
Disclosure of Invention
The embodiment of the invention provides a refrigerating system, a refrigerating method and refrigerating equipment, and aims to solve the problems that in the prior art, a condensing coil and a natural cooling coil are separately arranged, the occupied space is large, and the heat exchange effect is poor.
In order to solve the above technical problem, the present invention provides a refrigeration system, wherein the system method comprises:
the condenser is internally embedded with the natural cooling coil;
wherein, the condensing coil, the compressor and the evaporator form a compressor refrigeration loop; and the natural cooling coil, the refrigerant pump and the intermediate heat exchanger form a natural cooling loop.
Furthermore, the condensing coil is of a single-layer structure formed by connecting at least two first U-shaped pipes through a turning bend.
Furthermore, the natural cooling coil pipe is a single-layer structure formed by connecting at least two second U-shaped pipes through a turning head, the bending part of the single-layer structure of the natural cooling coil pipe is embedded into the bending part of the single-layer structure of the condensation coil pipe, and the bending part of the single-layer structure of the condensation coil pipe is embedded into the bending part of the single-layer structure of the natural cooling coil pipe.
Furthermore, the natural cooling coil is of a double-layer structure formed by connecting at least two second U-shaped pipes through turning heads, and the single-layer structure of the condensing coil is embedded in a gap in the middle of the double-layer structure of the natural cooling coil.
Furthermore, the condensing coil is of a double-layer structure formed by connecting at least two first U-shaped pipes through a turning bend.
Furthermore, the natural cooling coil is of a single-layer structure formed by connecting at least two second U-shaped pipes through turning heads, and the single-layer structure of the natural cooling coil is embedded into a gap in the middle of the double-layer structure of the condensing coil.
Furthermore, the natural cooling coil is a double-layer structure formed by connecting at least two second U-shaped pipes through a turning head, and the double-layer structure of the natural cooling coil and the double-layer structure of the condensing coil are embedded into each other.
Further, the system further comprises:
and the water inlet of the tail end coil pipe is communicated with the water outlet of the evaporator, the water outlet of the tail end coil pipe is communicated with the water inlet of the intermediate heat exchanger, and the water outlet of the intermediate heat exchanger is communicated with the water inlet of the evaporator.
Further, the system further comprises:
a throttle valve disposed between the condensing coil and the evaporator.
Further, the system further comprises:
and the fan is arranged beside the condensing coil and the natural cooling coil and used for accelerating the air flow on the surfaces of the condensing coil and the natural cooling coil.
The invention also provides refrigeration equipment comprising the refrigeration system.
Further, the apparatus comprises at least one of: refrigerator, air conditioner.
The invention also provides a refrigeration method, which is applied to the refrigeration system and comprises the following steps:
controlling the conduction of a compressor refrigeration loop and/or a natural cooling loop according to the ambient temperature;
and after the refrigeration loop of the compressor and the natural cooling loop are controlled to be conducted, controlling the load and the frequency of the compressor according to the environment temperature.
Further, the control of the compressor refrigeration circuit and/or the natural cooling circuit to be conducted according to the ambient temperature includes:
if the ambient temperature is greater than a first threshold value, controlling the conduction of a refrigeration circuit of the compressor;
if the ambient temperature is less than or equal to the first threshold and greater than a second threshold, controlling both the compressor refrigeration circuit and the natural cooling circuit to be conducted;
and controlling the natural cooling loop to be conducted if the ambient temperature is less than or equal to the second threshold value.
Further, after controlling the compressor refrigeration circuit and the natural cooling circuit to be conducted, controlling the load and the frequency of the compressor according to the environment temperature includes:
controlling the compressor to operate at a first load and a first frequency if the ambient temperature is greater than the second threshold and less than a third threshold;
controlling the compressor to operate at a second load and a second frequency if the ambient temperature is greater than or equal to a third threshold and less than or equal to the first threshold;
wherein the third threshold is smaller than the first threshold and larger than the second threshold, the second load is larger than the first load, and the second frequency is larger than the first frequency.
The present invention also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the above-described refrigeration method.
By applying the technical scheme of the invention, the condensing coil and the natural cooling coil are mutually nested and arranged in the gap between the condensing coil and the natural cooling coil, so that the space of the condenser can be saved, heat exchange between the condensing coil and the natural cooling coil is facilitated, and the refrigerating effect of the whole refrigerating system is improved.
Drawings
FIG. 1 is a block diagram of a refrigeration system according to an embodiment of the present invention;
FIG. 2 is a block diagram of a condensing coil and a free cooling coil according to an embodiment of the present invention;
FIG. 3 is a block diagram of a condensing coil and a free cooling coil according to another embodiment of the present invention;
FIG. 4 is a block diagram of a condensing coil and a free cooling coil according to yet another embodiment of the present invention;
FIG. 5 is a block diagram of a condensing coil and a free cooling coil according to yet another embodiment of the present invention;
FIG. 6 is a block diagram of a refrigeration system according to another embodiment of the present invention;
fig. 7 is a flowchart of a refrigeration method according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and "a plurality" typically includes at least two.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It should be understood that although the terms first, second, etc. may be used to describe the U-shaped tubes in embodiments of the present invention, the U-shaped tubes should not be limited to these terms. These terms are only used to distinguish between the U-shaped tubes in the different coils. For example, a first U-shaped tube may also be referred to as a second U-shaped tube, and similarly, a second U-shaped tube may also be referred to as a first U-shaped tube, without departing from the scope of embodiments of the present invention.
The words "if", as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrases "if determined" or "if detected (a stated condition or event)" may be interpreted as "when determined" or "in response to a determination" or "when detected (a stated condition or event)" or "in response to a detection (a stated condition or event)", depending on the context.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in the article or device in which the element is included.
Alternative embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Example 1
The present embodiment provides a refrigeration system, and fig. 1 is a block diagram of a refrigeration system according to an embodiment of the present invention, as shown in fig. 1, the system includes: the condenser 1, the condensing coil 11 and the natural cooling coil 12 are mutually embedded in the condenser 1; wherein, the condensing coil 11, the compressor 2 and the evaporator 3 form a compressor refrigeration loop, the arrow direction in fig. 1 is the refrigerant flowing direction, as shown in fig. 1, the refrigerant discharged from the exhaust end of the compressor 2 enters the condensing coil 11 through the water outlet of the condensing coil 11, condenses in the condensing coil when encountering cold, then enters the water outlet of the evaporator 3 through the outlet end of the condensing coil 11, evaporates to be gaseous in the evaporator 3, the gaseous refrigerant returns to the air suction end of the compressor 2 from the outlet end of the evaporator 3, and completes the compressor refrigeration cycle; the natural cooling coil 12, the refrigerant pump 4 and the intermediate heat exchanger 5 form a natural cooling loop, the refrigerant flows to the natural cooling coil 12 from the outlet end of the intermediate heat exchanger 5 under the driving of the refrigerant pump 4, condenses when encountering cold in the natural cooling coil 12, returns to the water outlet of the intermediate heat exchanger 5, evaporates in the intermediate heat exchanger 5 to take away heat, and then flows to the natural cooling coil 12 under the driving of the refrigerant pump 4 and the refrigerant pump 4 to complete natural cooling circulation. It should be noted that the refrigerant in the compressor refrigeration circuit and the refrigerant in the natural cooling circuit may be the same refrigerant or different refrigerants, and those skilled in the art can select the refrigerant according to actual needs.
When concrete application, for guaranteeing heat transfer effect, condensing coil 11 and natural cooling coil 12 set up to crooked shape, consequently, can have the space in two coils, in this embodiment, condensing coil 11 and natural cooling coil 12 set up in condenser 1 each other with the cover each other, condensing coil 11 and natural cooling coil 12 set up in each other's space promptly, can furthest save space, and simultaneously, can also carry out the heat transfer between condensing coil 11 and the natural cooling coil 12 simultaneously, whole refrigerating system's refrigeration effect is improved.
Example 2
In this embodiment, another refrigeration system is provided, and fig. 2 is a structural diagram of a condensing coil and a natural cooling coil according to an embodiment of the present invention, and as shown in fig. 2, both the condensing coil 11 and the natural cooling coil 12 are curved coils and are embedded into each other. Condensing coil 11 is the single-layer structure who connects the constitution through turning the elbow by at least two first U-shaped pipes 111, and natural cooling coil 12 is the single-layer structure who connects the constitution through turning the head by at least two second U-shaped pipes 121, and natural cooling coil 12's single-layer structure's flexion imbeds condensing coil 11's single-layer structure's flexion, and condensing coil 11's single-layer structure's flexion imbeds natural cooling coil 12's single-layer structure's flexion.
Fig. 3 is a structural diagram of a condensing coil and a natural cooling coil according to another embodiment of the present invention, as shown in fig. 3, in this embodiment, a condensing coil 11 is a single-layer structure formed by connecting at least two first U-shaped tubes end to end in sequence, a natural cooling coil 12 is a double-layer structure formed by connecting at least two second U-shaped tubes through a turning head, and the single-layer structure of the condensing coil 11 is embedded in a gap between the double-layer structure of the natural cooling coil 12.
Fig. 4 is a structural diagram of a condensing coil and a natural cooling coil according to another embodiment of the present invention, as shown in fig. 4, in this embodiment, a condensing coil 11 is a double-layer structure formed by connecting at least two first U-shaped tubes through a turning head, a natural cooling coil 12 is a single-layer structure formed by connecting at least two second U-shaped tubes through a turning head, and the single-layer structure of the natural cooling coil 12 is embedded in a gap between the double-layer structure of the condensing coil 11.
Fig. 5 is a structural diagram of a condensing coil and a natural cooling coil according to still another embodiment of the present invention, in this embodiment, a condensing coil 11 is a double-layer structure formed by connecting at least two second U-shaped tubes through a turning head, and has the same structure as the condensing coil 11 in fig. 4 or the natural cooling coil 12 in fig. 3, and a natural cooling coil 12 is a double-layer structure formed by connecting at least two second U-shaped tubes through a turning head, and has the same structure as the condensing coil 11 in fig. 4 or the natural cooling coil 12 in fig. 3, and as shown in fig. 5, the double-layer structure of the natural cooling coil 12 and the double-layer structure of the condensing coil 11 are embedded into each other.
In any of the above embodiments, the condensing coil and the natural cooling coil are both in interval distribution, so that the space is saved, when the condensing coil and the natural cooling coil have refrigerant circulation, heat exchange can be performed between the refrigerants, the refrigeration effect is improved, when only one of the condensing coil and the natural cooling coil has the refrigerant circulation, the different sections of the pipeline are in interval distribution, the pipe spacing is increased, and the heat exchange is facilitated.
In order to achieve the transfer of the cold produced by the evaporator 3 and the intermediate heat exchanger 5 to the room, the system further comprises: the water inlet of the tail end coil 6 is communicated with the water outlet of the evaporator 3, the water outlet of the tail end coil 6 is communicated with the water inlet of the intermediate heat exchanger 5, the water outlet of the intermediate heat exchanger 5 is communicated with the water inlet of the evaporator to form water circulation, and the water in the pipeline transmits the cold energy to the indoor after absorbing the cold energy of the evaporator 3 and the intermediate heat exchanger 5.
Fig. 6 is a structural diagram of a refrigeration system according to another embodiment of the present invention, in order to control a refrigerant flow rate in a refrigeration circuit of a compressor and improve heat exchange efficiency, as shown in fig. 6, the system further includes: and the throttle valve 7 is arranged between the outlet end of the condensing coil 11 and the water outlet of the evaporator 3, and the throttle valve 7 is arranged between the outlet end of the condensing coil 11 and the water outlet of the evaporator 3. Simultaneously, in order to accelerate the air flow near condensing coil 11 and the 12 surfaces of natural cooling coil, make the condensation heat of production in time distribute away, improve the heat transfer effect, this system still includes: and the fan 8 are arranged beside the condensing coil 11 and the natural cooling coil 12 in the condenser 1 and are used for accelerating the air flow on the surfaces of the condensing coil 11 and the natural cooling coil 12.
The refrigerating system of this embodiment, through with condensing coil 11 and the cold coupling of natural cooling coil 12 in condenser 1, can circulate two way refrigerants simultaneously in condenser 1 to two way refrigerants circulate by convection, mutually noninterfere, thereby improve the heat exchange efficiency of condenser, improve the unit efficiency, reduce condenser 1's volume and weight simultaneously, reduction in production cost.
Example 3
The present embodiment provides a refrigeration method, and fig. 7 is a flowchart of a refrigeration method according to an embodiment of the present invention, as shown in fig. 7, the method includes:
and S101, controlling the conduction of a compressor refrigeration circuit and/or a natural cooling circuit according to the ambient temperature.
When ambient temperature is higher, can't realize the refrigeration through natural cooling circulation, when outdoor environment is in a certain temperature interval, can't satisfy the refrigerating output demand through natural cooling circulation alone, and when ambient temperature is lower, can satisfy the refrigerating output demand through natural cooling circulation alone, consequently, before the refrigeration return circuit in the selection refrigerating system, need acquire ambient temperature earlier, when concrete implementation, can be through setting up temperature sensor outdoors, acquire ambient temperature.
And S102, controlling the load and the frequency of the compressor according to the ambient temperature after controlling the conduction of the refrigeration loop and the natural cooling loop of the compressor.
After the refrigeration loop of the compressor and the natural cooling loop are controlled to be conducted, the condensing coil and the natural cooling coil in the refrigeration system are nested with each other, and heat exchange is carried out between the condensing coil and the natural cooling coil, so that when the environment temperature is low and the natural cooling effect is good, more refrigeration loads can be shared through the natural cooling loop, the refrigeration load of the compressor is reduced, and when the environment temperature is high, the refrigeration load of the compressor is increased.
According to the refrigeration method, after the refrigeration loop of the compressor and the natural cooling loop are controlled to be conducted, the load and the frequency of the compressor are controlled according to the environment temperature, the operation parameters of the compressor can be adjusted according to the environment temperature, the refrigeration capacity in the nature is fully utilized, the energy is saved, and the energy efficiency is improved.
As described above, the environmental temperature has a great influence on the refrigeration effect of the refrigeration system, and in order to implement the conduction of the corresponding refrigeration loop according to the environmental temperature, step S102 specifically includes: if the ambient temperature is greater than a first threshold value, controlling the conduction of a compressor refrigeration loop; if the ambient temperature is less than or equal to the first threshold and greater than a second threshold, controlling the conduction of both the compressor refrigeration loop and the natural cooling loop; and controlling the natural cooling loop to be conducted if the ambient temperature is less than or equal to the second threshold value.
For example, if the ambient temperature is greater than-10 ℃, refrigeration cannot be achieved through natural cooling cycles, and therefore, the compressor refrigeration circuit of the control system needs to be conducted separately; if the ambient temperature is less than or equal to minus 10 ℃ and greater than minus 20 ℃, the refrigeration can be realized through the natural cooling circulation, but the refrigeration capacity requirement of the user can not be met only through the natural cooling circulation, so that the refrigeration circuit of the compressor and the natural cooling circuit are required to be controlled to be conducted, and if the ambient temperature is less than or equal to minus 20 ℃, the refrigeration capacity requirement of the user can be met through the natural cooling circulation, so that the natural cooling circuit can be controlled to be conducted independently in order to save energy.
Because the condensing coil and the natural cooling coil can exchange heat with each other, when the environment temperature is low and the natural cooling effect is good, more refrigeration loads can be shared by the natural cooling loop, so that after the refrigeration loop of the compressor and the natural cooling loop are controlled to be conducted, the operation parameters of the compressor can be adjusted along with the change of the environment temperature, and particularly, the load and the frequency of the compressor can be controlled according to the environment temperature: controlling the compressor to operate at a first load and a first frequency if the ambient temperature is greater than the second threshold and less than a third threshold; controlling the compressor to operate at a second load and a second frequency if the ambient temperature is greater than or equal to a third threshold and less than or equal to a first threshold; the third threshold is smaller than the first threshold and larger than the second threshold, the second load is larger than the first load, and the second frequency is larger than the first frequency.
For example, if the ambient temperature is greater than-20 ℃ and less than-15 ℃, the temperature is relatively low, and the natural cooling effect is relatively good, so that the compressor can be controlled to operate at a relatively low load and frequency, so that the natural cooling is fully utilized, and the energy is saved; if the ambient temperature is greater than or equal to-15 ℃ and less than or equal to-10 ℃, the natural cooling effect is poor, so that the compressor can be controlled to operate at higher load and frequency, and the refrigeration effect is improved.
The above scheme is a control scheme for controlling the conduction of both the compressor refrigeration circuit and the natural cooling circuit, and when only one of the compressor refrigeration circuit and the natural cooling circuit is controlled to be conducted, the control scheme comprises:
if only control compressor refrigeration circuit and switch on, then after compressor refrigeration circuit switches on the preset time, can be according to the delivery port temperature regulation compressor's of evaporimeter operating parameter, specifically can include: if the temperature of the water outlet of the evaporator is higher than the first preset temperature, the current refrigeration effect is poor, and the compressor needs to be controlled to load and add frequency to improve the refrigeration effect; if the temperature of the water outlet of the evaporator is less than or equal to a first preset temperature and is greater than or equal to a second preset temperature, the refrigeration effect can meet the requirement, and the compressor is controlled to keep the current load and the running frequency; and if the temperature of the water outlet of the evaporator is lower than the second preset temperature, the current refrigeration effect is better, and the compressor is controlled to unload and reduce the frequency for further energy conservation.
After controlling the natural cooling circuit to be conducted, adjusting the operation parameters according to the temperature of the water outlet of the evaporator, and specifically comprising the following steps: if the temperature of the water outlet of the evaporator is higher than the first preset temperature, the current refrigeration effect is poor, and the refrigerant pump needs to be controlled to load and add frequency to improve the refrigeration effect; if the temperature of the water outlet of the evaporator is less than or equal to a first preset temperature and greater than or equal to a second preset temperature, the refrigerating effect can meet the requirement, and the refrigerant pump is controlled to keep the current load and the operating frequency; if the temperature of the water outlet of the evaporator is lower than the second preset temperature, the current refrigeration effect is better, and the unloading frequency reduction of the refrigerant pump is controlled for further saving energy.
The first preset temperature and the second preset temperature are determined according to the water inlet temperature of the evaporator, for example, if the water inlet temperature of the evaporator is Ta, the first preset amount Δ T1, namely Ta- Δ T1, is subtracted from Ta as the first preset temperature, and the second preset amount Δ T2, namely Ta- Δ T2, is subtracted from Ta as the second preset temperature, wherein Δ T1 is smaller than Δ T2, the water inlet temperature may be a fixed value, and the water outlet temperature is measured by a temperature sensor.
Example 4
The present embodiment provides a refrigeration method, which is applied to the refrigeration system in the above embodiment, and the method includes:
refrigerating in summer: because outdoor environment is higher, only to switching on the compressor refrigeration circuit, there is the refrigerant circulation in the compressor refrigeration circuit this moment, when condensing coil compares all having the refrigerant circulation in two return circuits, the pipe spacing increase, and heat transfer area increases, therefore heat exchange efficiency is better, and the system efficiency is higher. In summer, the natural cooling loop cannot refrigerate due to high outdoor temperature, and if the natural cooling loop is conducted forcibly, the natural cooling loop only takes in outside heat, so that the refrigeration effect of the whole system is reduced, and the natural cooling loop is not conducted.
And (3) cooling in excessive seasons: because the outdoor environment temperature is relatively low, the compressor refrigeration loop and the natural cooling loop are conducted at the same time, at the moment, the refrigerant in the condensing coil and the refrigerant in the natural cooling coil are in convection circulation, one path of refrigerant performs compressor refrigeration circulation, the other path of refrigerant performs natural cooling circulation, and the two paths of refrigerants exchange heat in the circulation process. Compared with a split condenser, the integral condenser has better heat exchange effect, so that the energy efficiency of the whole condenser is higher.
Working condition refrigeration in winter: at the moment, the outdoor environment temperature is very low, only the natural cooling loop is opened, the refrigerant only flows through the natural cooling coil at the moment, the cooling is similar to summer refrigeration, when the natural cooling coil is compared with two loops and the refrigerant flows through the two loops, the tube spacing is increased, the heat exchange area is increased, the heat exchange efficiency is better, and the system energy efficiency is higher at the moment.
Example 5
The embodiment provides a refrigeration device, which comprises the refrigeration system in the above embodiment, and is used for saving the internal space of the condenser, improving the energy efficiency and improving the refrigeration effect. The refrigeration equipment of the embodiment comprises at least one of the following components: refrigerator, air conditioner.
Example 6
The present embodiment provides a computer-readable storage medium on which a computer program is stored, which when executed by a processor implements the refrigeration method in the above-described embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (16)
1. A refrigeration system, the system comprising:
the condenser is internally embedded with the natural cooling coil;
wherein, the condensing coil, the compressor and the evaporator form a compressor refrigeration loop; and the natural cooling coil, the refrigerant pump and the intermediate heat exchanger form a natural cooling loop.
2. The system of claim 1, wherein the condensing coil is a single layer structure of at least two first U-shaped tubes connected by a return bend.
3. The system of claim 2, wherein the free cooling coil is a single-layer structure formed by connecting at least two second U-shaped pipes through a turning head, the bent portion of the single-layer structure of the free cooling coil is embedded in the bent portion of the single-layer structure of the condensation coil, and the bent portion of the single-layer structure of the condensation coil is embedded in the bent portion of the single-layer structure of the free cooling coil.
4. The system of claim 2, wherein the free cooling coil is a double-layer structure formed by connecting at least two second U-shaped pipes through a turning head, and the single-layer structure of the condensing coil is embedded in a gap between the double-layer structure of the free cooling coil.
5. The system of claim 1, wherein the condensing coil is a double-layer structure of at least two first U-shaped tubes connected by a return bend.
6. The system of claim 5, wherein the free cooling coil is a single-layer structure formed by connecting at least two second U-shaped pipes through a turning head, and the single-layer structure of the free cooling coil is embedded in a gap between the double-layer structure of the condensing coil.
7. The system of claim 5, wherein the free cooling coil is a double-layer structure formed by connecting at least two second U-shaped pipes through a turning head, and the double-layer structure of the free cooling coil and the double-layer structure of the condensing coil are embedded with each other.
8. The system of claim 1, further comprising:
and the water inlet of the tail end coil pipe is communicated with the water outlet of the evaporator, the water outlet of the tail end coil pipe is communicated with the water inlet of the intermediate heat exchanger, and the water outlet of the intermediate heat exchanger is communicated with the water inlet of the evaporator.
9. The system of claim 1, further comprising:
a throttle valve disposed between the condensing coil and the evaporator.
10. The system of claim 1, further comprising:
and the fan is arranged beside the condensing coil and the natural cooling coil and used for accelerating the air flow on the surfaces of the condensing coil and the natural cooling coil.
11. Refrigeration device, characterized in that it comprises a refrigeration system according to any one of claims 1 to 10.
12. The refrigeration appliance according to claim 11, wherein the refrigeration appliance comprises at least one of:
refrigerator, air conditioner.
13. A method of refrigeration applied to a refrigeration system as claimed in any one of claims 1 to 10, characterized in that the method comprises:
controlling the conduction of a compressor refrigeration loop and/or a natural cooling loop according to the ambient temperature;
and after the refrigeration loop of the compressor and the natural cooling loop are controlled to be conducted, controlling the load and the frequency of the compressor according to the environment temperature.
14. The method of claim 13, wherein controlling compressor refrigeration circuit and/or natural cooling circuit conductance according to ambient temperature comprises:
if the ambient temperature is greater than a first threshold value, controlling the conduction of a refrigeration circuit of the compressor;
if the ambient temperature is less than or equal to the first threshold and greater than a second threshold, controlling both the compressor refrigeration circuit and the natural cooling circuit to be conducted;
and controlling the natural cooling loop to be conducted if the ambient temperature is less than or equal to the second threshold value.
15. The method of claim 14, wherein controlling the load and frequency of the compressor based on the ambient temperature after controlling both the compressor refrigeration circuit and the free cooling circuit to be on comprises:
controlling the compressor to operate at a first load and a first frequency if the ambient temperature is greater than the second threshold and less than a third threshold;
controlling the compressor to operate at a second load and a second frequency if the ambient temperature is greater than or equal to the third threshold and less than or equal to the first threshold;
wherein the third threshold is smaller than the first threshold and larger than the second threshold, the second load is larger than the first load, and the second frequency is larger than the first frequency.
16. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, carries out the method according to any one of claims 13 to 15.
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| CN202010998235.XA CN112066581A (en) | 2020-09-21 | 2020-09-21 | Refrigerating system and method and refrigerating equipment |
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| CN202010998235.XA CN112066581A (en) | 2020-09-21 | 2020-09-21 | Refrigerating system and method and refrigerating equipment |
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| CN112066581A true CN112066581A (en) | 2020-12-11 |
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| CN202010998235.XA Pending CN112066581A (en) | 2020-09-21 | 2020-09-21 | Refrigerating system and method and refrigerating equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113175719A (en) * | 2021-05-25 | 2021-07-27 | 云南电网有限责任公司电力科学研究院 | Working medium direct contact type refrigerating system |
Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4409798A (en) * | 1980-12-22 | 1983-10-18 | Yuan Shao W | Energy-saving cooling system |
| JP2001072193A (en) * | 1999-09-06 | 2001-03-21 | Sanyo Electric Co Ltd | Laminated cooling coil used for beverage supplying device or the like |
| CN2823892Y (en) * | 2005-07-11 | 2006-10-04 | 河南新飞电器有限公司 | Non-drop energy-saving cold/heat air conditioner |
| US20070028626A1 (en) * | 2003-09-02 | 2007-02-08 | Sharp Kabushiki Kaisha | Loop type thermo siphon, stirling cooling chamber, and cooling apparatus |
| US20090223231A1 (en) * | 2008-03-10 | 2009-09-10 | Snow Iii Amos A | Accessory sub-cooling unit and method of use |
| CN101706149A (en) * | 2009-11-20 | 2010-05-12 | 中国科学技术大学 | Air conditioner with heat pipe condensation heat recycling mechanism |
| CN201555470U (en) * | 2009-09-30 | 2010-08-18 | 艾默生网络能源有限公司 | Double-coil heat exchanger |
| CN101929754A (en) * | 2010-09-20 | 2010-12-29 | 阿尔西制冷工程技术（北京）有限公司 | Air-cooled water cooling unit |
| KR20110071167A (en) * | 2009-12-21 | 2011-06-29 | 엘지전자 주식회사 | Refrigerator |
| CN105180490A (en) * | 2015-09-09 | 2015-12-23 | 中国科学院理化技术研究所 | Integrated natural cooling machine room air conditioner system |
| KR101699531B1 (en) * | 2016-02-19 | 2017-01-24 | 한국이미지시스템(주) | Computer room air-conditioner with a split heat pipe heat exchanger and the control system |
| CN106766527A (en) * | 2016-12-26 | 2017-05-31 | 青岛海尔股份有限公司 | A kind of refrigerator with double refrigeration systems |
| CN106855291A (en) * | 2015-12-08 | 2017-06-16 | 艾默生网络能源有限公司 | A kind of air-conditioning and its control method and control device |
| CN106855279A (en) * | 2015-12-08 | 2017-06-16 | 艾默生网络能源有限公司 | Air-conditioning system, refrigeration control method and device |
| CN106949585A (en) * | 2017-05-16 | 2017-07-14 | 郑州云海信息技术有限公司 | A kind of computer-room air conditioning system |
| CN107014014A (en) * | 2017-04-20 | 2017-08-04 | 广东申菱环境***股份有限公司 | A kind of heat pipe natural cooling evaporating type condensing cooling-water machine and its control method |
| CN206695309U (en) * | 2017-04-20 | 2017-12-01 | 广东申菱环境***股份有限公司 | A kind of fluorine pump natural cooling evaporating type condensing cooling-water machine |
| CN207355402U (en) * | 2017-07-28 | 2018-05-15 | 唐山挨个来食品有限公司 | Comprehensively utilize the food cooling device of energy |
| CN209263745U (en) * | 2018-11-05 | 2019-08-16 | 武城县冠智信息产业技术有限公司 | A kind of nested type dehumidifying heat pipe |
| CN110398092A (en) * | 2018-04-24 | 2019-11-01 | 博西华电器（江苏）有限公司 | Condenser assembly and refrigerating appliance |
| CN212362479U (en) * | 2020-09-21 | 2021-01-15 | 珠海格力电器股份有限公司 | Refrigerating system and refrigerating equipment |
-
2020
- 2020-09-21 CN CN202010998235.XA patent/CN112066581A/en active Pending
Patent Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4409798A (en) * | 1980-12-22 | 1983-10-18 | Yuan Shao W | Energy-saving cooling system |
| JP2001072193A (en) * | 1999-09-06 | 2001-03-21 | Sanyo Electric Co Ltd | Laminated cooling coil used for beverage supplying device or the like |
| US20070028626A1 (en) * | 2003-09-02 | 2007-02-08 | Sharp Kabushiki Kaisha | Loop type thermo siphon, stirling cooling chamber, and cooling apparatus |
| CN2823892Y (en) * | 2005-07-11 | 2006-10-04 | 河南新飞电器有限公司 | Non-drop energy-saving cold/heat air conditioner |
| US20090223231A1 (en) * | 2008-03-10 | 2009-09-10 | Snow Iii Amos A | Accessory sub-cooling unit and method of use |
| CN201555470U (en) * | 2009-09-30 | 2010-08-18 | 艾默生网络能源有限公司 | Double-coil heat exchanger |
| CN101706149A (en) * | 2009-11-20 | 2010-05-12 | 中国科学技术大学 | Air conditioner with heat pipe condensation heat recycling mechanism |
| KR20110071167A (en) * | 2009-12-21 | 2011-06-29 | 엘지전자 주식회사 | Refrigerator |
| CN101929754A (en) * | 2010-09-20 | 2010-12-29 | 阿尔西制冷工程技术（北京）有限公司 | Air-cooled water cooling unit |
| CN105180490A (en) * | 2015-09-09 | 2015-12-23 | 中国科学院理化技术研究所 | Integrated natural cooling machine room air conditioner system |
| CN106855291A (en) * | 2015-12-08 | 2017-06-16 | 艾默生网络能源有限公司 | A kind of air-conditioning and its control method and control device |
| CN106855279A (en) * | 2015-12-08 | 2017-06-16 | 艾默生网络能源有限公司 | Air-conditioning system, refrigeration control method and device |
| KR101699531B1 (en) * | 2016-02-19 | 2017-01-24 | 한국이미지시스템(주) | Computer room air-conditioner with a split heat pipe heat exchanger and the control system |
| CN106766527A (en) * | 2016-12-26 | 2017-05-31 | 青岛海尔股份有限公司 | A kind of refrigerator with double refrigeration systems |
| CN107014014A (en) * | 2017-04-20 | 2017-08-04 | 广东申菱环境***股份有限公司 | A kind of heat pipe natural cooling evaporating type condensing cooling-water machine and its control method |
| CN206695309U (en) * | 2017-04-20 | 2017-12-01 | 广东申菱环境***股份有限公司 | A kind of fluorine pump natural cooling evaporating type condensing cooling-water machine |
| CN106949585A (en) * | 2017-05-16 | 2017-07-14 | 郑州云海信息技术有限公司 | A kind of computer-room air conditioning system |
| CN207355402U (en) * | 2017-07-28 | 2018-05-15 | 唐山挨个来食品有限公司 | Comprehensively utilize the food cooling device of energy |
| CN110398092A (en) * | 2018-04-24 | 2019-11-01 | 博西华电器（江苏）有限公司 | Condenser assembly and refrigerating appliance |
| CN209263745U (en) * | 2018-11-05 | 2019-08-16 | 武城县冠智信息产业技术有限公司 | A kind of nested type dehumidifying heat pipe |
| CN212362479U (en) * | 2020-09-21 | 2021-01-15 | 珠海格力电器股份有限公司 | Refrigerating system and refrigerating equipment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113175719A (en) * | 2021-05-25 | 2021-07-27 | 云南电网有限责任公司电力科学研究院 | Working medium direct contact type refrigerating system |
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