CN114278975A - Water multi-connected system - Google Patents
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- CN114278975A CN114278975A CN202111609690.7A CN202111609690A CN114278975A CN 114278975 A CN114278975 A CN 114278975A CN 202111609690 A CN202111609690 A CN 202111609690A CN 114278975 A CN114278975 A CN 114278975A
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Abstract
The invention discloses a water multi-connected system, which comprises: the water modules are connected in parallel through a water return pipeline and a water drainage pipeline; the outdoor unit module is connected with the water module through a refrigerant pipeline; the temperature sensor is arranged on the water return pipeline and the water discharge pipeline and is used for acquiring total water return temperature Ti and total water discharge temperature To; the control module is in communication connection with the temperature sensor and is used for receiving temperature data acquired by the temperature sensor; the control module is used for setting a target water discharge temperature Tt, calculating a water temperature change value Q and controlling the opening number M (n) of the water modules at the moment n according to the water temperature change value Q. According to the invention, the heating difference value, the refrigerating difference value and the water temperature change value Q are calculated, the opening number of the water modules is periodically judged, the online number of the water modules is adjusted in real time, and the automatic loading and unloading of the water modules in the water multi-connected system are realized; other operations are not needed, and energy is saved.
Description
Technical Field
The invention relates to the technical field of multi-online systems, in particular to a water multi-online system.
Background
Along with the development of society, the demand of people for heating tends to ground heating more and more, however, one water module cannot meet the use demand of users, and when a plurality of water modules are respectively installed, the installation is complex, the operation is complicated, the use comfort of the users is reduced, and the energy-saving effect is poor; in addition, a larger water machine or air cooling module is adopted, so that the occupied area is larger, and the installation and maintenance cost is higher.
In summary, there is a need to design a water multi-connected system to solve the above problems in the prior art.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a water multi-connected system, which ensures that the capacity of a unit is fully exerted under the condition that a long pipe has a fall; the circulating refrigerant quantity of the unit is ensured to be in the optimal state.
In order to achieve the purpose, the invention adopts the following technical scheme:
a water multiplex system comprising:
the water modules are connected in parallel through a water return pipeline and a water drainage pipeline;
the outdoor unit module is connected with the water module through a refrigerant pipeline;
the temperature sensor is arranged on the water return pipeline and the water discharge pipeline and is used for acquiring total water return temperature Ti and total water discharge temperature To;
the control module is in communication connection with the temperature sensor and is used for receiving temperature data acquired by the temperature sensor;
the control module is used for setting a target water discharge temperature Tt, calculating a water temperature change value Q and controlling the opening number M (n) of the water modules at the moment n according to the water temperature change value Q.
In some embodiments of the present invention, the water temperature variation value Q includes a cooling water temperature variation value Qc and a heating water temperature variation value Qh.
In some embodiments of the present invention, the refrigerating water temperature variation value Qc is calculated by Qc = Δ Tc (n) - Δ Tc (n-1), where Δ Tc (n) is a refrigerating difference value, i.e. a difference value between the total return water temperature Ti or the total drain temperature To at the time n in the refrigerating state and the target drain temperature Tt.
In some embodiments of the present invention, the heating water temperature variation value Qh is calculated by Qh = Δ Th (n) - Δ Th (n-1), where Δ Th (n) is a heating difference value, i.e., a difference value between the target discharge water temperature Tt and the total return water temperature Ti or the total discharge water temperature To at the time n in the heating state.
In some embodiments of the present invention, when TU =0 can be selected, the refrigeration difference Δ tc (n) is calculated as Δ tc (n) = Ti-Tt; when TU =1 is selected, the cooling difference Δ tc (n) is calculated by Δ tc (n) = To-Tt.
In some embodiments of the present invention, when TU =0 can be selected, the heating difference Δ th (n) is calculated as Δ th (n) = Tt-Ti; when TU =1 can be selected, the heating difference Δ th (n) is calculated by Δ th (n) = Tt-To.
In some embodiments of the present invention, the calculation formula of the opening number m (n) of the water modules is: m (n) = total _ eq × (n); wherein, the total _ eq is the total number of the water modules in a non-alarm state, and p (n) is the capacity output rate of the water modules.
In some embodiments of the present invention, the capacity output rate p (n) is calculated by the formula: p (n) = p (n-1) + Δ p, where Δ p is the rate of change of capacity output of the water module.
In some embodiments of the present invention, the control module is configured to control the capacity output change rate Δ p to increase when the cooling water temperature change value Qc or the heating water temperature change value Qh increases.
In some embodiments of the invention, the control module is configured to control the capacity output change rate Δ p to increase when the cooling difference Δ tc (n) or the heating difference Δ th (n) increases.
In some embodiments of the present invention, the control module is further configured to count a running time t of the water module and prioritize the water module according to the running time t.
In some embodiments of the invention, the lower the running time t, the higher the priority of the water module.
In some embodiments of the present invention, the water return pipeline includes a water return branch and a water return main path, wherein one end of the water return branch is connected to the water module, and the other end of the water return branch is connected to the water return main path; one end of the water return main path is connected with the water return branch, and the other end of the water return main path is connected with the water tank.
In some embodiments of the present invention, the drainage pipeline comprises a water return branch and a water return main path, wherein one end of the drainage branch is connected to the water module, and the other end of the drainage branch is connected to the drainage main path; one end of the main drainage path is connected with the branch drainage path, and the other end of the main drainage path is connected with the water tank.
Compared with the prior art, the technical scheme of the invention has the following technical effects:
according to the invention, the heating difference value, the refrigerating difference value and the water temperature change value Q are calculated, the opening number of the water modules is periodically judged, the online number of the water modules is adjusted in real time, and the automatic loading and unloading of the water modules in the water multi-connected system are realized; the automatic loading and unloading in the whole process can be realized after the water temperature is set by a user, other operations are not needed, and the energy is saved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a water multi-connected system.
Reference numerals: 100-water module; 200-an outdoor unit module; 300-a drain line; 400-a water return pipeline; 500-a water inlet valve; 600-a water outlet valve; 700-a water tank; 800-a filter; 900-refrigerant pipeline.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and 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.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the description of the present invention, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise explicitly stated or limited. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
The vibration control device provided in this embodiment is fixedly mounted on an air conditioner pipe, and performs a cooling and heating cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator for the air conditioner concerned. The cooling and heating cycle includes a series of processes involving compression, condensation, expansion, and evaporation to cool or heat an indoor space.
The low-temperature and low-pressure refrigerant enters the compressor, the compressor compresses the refrigerant gas in a high-temperature and high-pressure state, and the compressed refrigerant gas is discharged. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.
The expansion valve expands the high-temperature and high-pressure liquid-phase refrigerant condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a refrigerating effect by heat exchange with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner can adjust the temperature of the indoor space throughout the cycle.
The outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including a compressor, an outdoor heat exchanger, and an outdoor fan, the indoor unit of the air conditioner includes a portion of an indoor heat exchanger and an indoor fan, and a throttling device (e.g., a capillary tube or an electronic expansion valve) may be provided in the indoor unit or the outdoor unit.
The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. The air conditioner performs a heating mode when the indoor heat exchanger serves as a condenser, and performs a cooling mode when the indoor heat exchanger serves as an evaporator.
The indoor heat exchanger and the outdoor heat exchanger are switched to be used as a condenser or an evaporator, a four-way valve is generally adopted, and specific reference is made to the arrangement of a conventional air conditioner, which is not described herein again.
The refrigeration working principle of the air conditioner is as follows: the compressor works to enable the interior of the indoor heat exchanger (in the indoor unit, the evaporator at the moment) to be in an ultralow pressure state, liquid refrigerant in the indoor heat exchanger is rapidly evaporated to absorb heat, air blown out by the indoor fan is cooled by the coil pipe of the indoor heat exchanger to become cold air which is blown into a room, the evaporated and vaporized refrigerant is compressed by the compressor, is condensed into liquid in a high-pressure environment in the outdoor heat exchanger (in the outdoor unit, the condenser at the moment) to release heat, and the heat is dissipated into the atmosphere through the outdoor fan, so that the refrigeration effect is achieved by circulation.
The heating working principle of the air conditioner is as follows: the gaseous refrigerant is pressurized by the compressor to become high-temperature and high-pressure gas, and the high-temperature and high-pressure gas enters the indoor heat exchanger (the condenser at the moment), is condensed, liquefied and released heat to become liquid, and simultaneously heats indoor air, so that the aim of increasing the indoor temperature is fulfilled. The liquid refrigerant is decompressed by the throttling device, enters the outdoor heat exchanger (an evaporator at the moment), is evaporated, gasified and absorbs heat to form gas, absorbs the heat of outdoor air (the outdoor air becomes cooler) to form gaseous refrigerant, and enters the compressor again to start the next cycle.
Referring to fig. 1, a water multiplex system includes:
a plurality of water modules 100, each of the water modules 100 being connected in parallel to a drain line 300 through a return line 400;
an outdoor unit module 200 connected to the water module 100 through a refrigerant line 900;
temperature sensors installed on the return water pipeline 400 and the drain pipeline for collecting a total return water temperature Ti and a total drain temperature To;
the control module is in communication connection with the temperature sensor and is used for receiving temperature data acquired by the temperature sensor;
the control module is used for setting a target water discharge temperature Tt, calculating a water temperature change value Q and controlling the opening number M (n) of the water modules at the moment n according to the water temperature change value Q.
In some embodiments of the present invention, shown with continued reference to FIG. 1, 6 water modules 100 are exemplified in this embodiment. Each water module 100 is connected in parallel through a branch of the return pipe 400 and a branch of the drain pipe 300; and are also connected in parallel by branches of the refrigerant line 900. The two outdoor unit modules 200 provided in this embodiment are also connected in parallel through the refrigerant pipeline 900.
The water discharging branches from the water modules 100 are converged into the water discharging pipeline 300, the water discharging pipeline 300 enters the water tank 700 through the water inlet valve 500, the water tank 700 represents a user terminal, that is, the water modules 100 convey heated water to the user terminal through the water discharging pipeline 300, and the water after heat dissipation is converged by the water returning pipeline 400 and then enters the water modules 100 through the water returning branches for recycling after reheating.
In some embodiments of the present invention, the water temperature variation value Q includes a cooling water temperature variation value Qc and a heating water temperature variation value Qh.
In some embodiments of the present invention, in the cooling mode, the refrigerating water temperature variation value Qc is calculated as Qc = Δ Tc (n) - Δ Tc (n-1), where Δ Tc (n) is a cooling difference value, i.e., a difference value between the total return water temperature Ti or the total drain temperature To at the time n and the target drain temperature Tt in the cooling state.
In some embodiments of the present invention, when TU =0 can be selected, the refrigeration difference Δ tc (n) is calculated as Δ tc (n) = Ti-Tt; when TU =1 is selected, the cooling difference Δ tc (n) is calculated by Δ tc (n) = To-Tt.
In some embodiments of the present invention, the control module is configured to control the capacity output change rate Δ p to increase, that is, to increase the number of activations of the water module, when the cooling water temperature change value Qc increases. And is further configured to control the capacity output change rate Δ p to increase, i.e., control the number of water modules to be turned on to increase, when the refrigeration difference Δ tc (n) increases.
Specifically, the control method is to create a capacity output change rate Δ p for the water modules 100 based on the cooling water temperature change value Qc and the cooling difference value Δ tc (n), and then calculate a capacity output rate p (n) at the next control time based on the capacity output change rate Δ p, thereby controlling the number of water modules 100 to be turned on.
p (n) = p (n-1) + Δ p, 0% ≦ p (n) ≦ 100%, and the initial value of p (n) is 0 when entering normal operation; when the normal operation is exited, the set value of p (n) is 0.
The number of water modules that need to be run m (n) = total _ eq × (n); where, the total _ eq is the total number of water modules 100 in the non-alarm state.
In some embodiments of the present invention, in the cooling state, when the outdoor temperature Ta >35 ℃ and the relationship between the target leaving water temperature Tt and the total backwater temperature Ti satisfies | Tt-Ti | > 10 ℃, the capacity output change rate Δ p is as shown in the following table:
in some embodiments of the present invention, also in the cooling state, when the outdoor temperature Ta ≦ 35 ℃ and the relationship between the target leaving water temperature Tt and the total returning water temperature Ti satisfies | Tt-Ti | <10 ℃, the capacity output change rate Δ p is as shown in the following table:
as can be seen from the capacity output change rate Δ p of the water modules 100 in the above two tables, when the water multi-connected system is started, there is a difference between the return water/discharge water temperature and the target outlet water temperature set by the user, the water multi-connected system is started by 1 water module, and then the starting number of the subsequent water modules is calculated by respectively looking up the tables periodically according to the refrigeration temperature difference Δ tc (n) and the refrigeration water temperature change value Qc, thereby realizing the automatic loading of the water modules. After the water multi-connected system operates for a period of time and the return water/drainage temperature exceeds the target outlet water temperature set by the user, the water multi-connected system periodically checks the table according to the temperature difference value delta Tc (n) and the water temperature change value Qc respectively to calculate the closing number of the subsequent water modules, so that the automatic load shedding of the water modules is realized.
In some embodiments of the present invention, in the heating mode, the heating water temperature variation value Qh is calculated by Qh = Δ Th (n) - Δ Th (n-1), where Δ Th (n) is a heating difference value, i.e., a difference value between the target discharge water temperature Tt at the time n in the heating state and the total return water temperature Ti or the total discharge water temperature To.
In some embodiments of the present invention, when TU =0 can be selected, the heating difference Δ th (n) is calculated as Δ th (n) = Tt-Ti; when TU =1 can be selected, the heating difference Δ th (n) is calculated by Δ th (n) = Tt-To.
In some embodiments of the present invention, the control module is configured to control the capacity output change rate Δ p to increase, that is, control to increase the number of activations of the water module, when the heating water temperature change value Qh increases. The control module is used for controlling the capacity output change rate delta p to increase when the heating difference value delta Th (n) is increased, namely controlling the opening number of the water modules to increase.
Specifically, the control method is to control the number of water modules 100 to be opened by creating a capacity output change rate Δ p for the water modules 100 based on the heating water temperature change value Qh and the heating difference value Δ th (n), and then calculating a capacity output rate p (n) at the next control time based on the capacity output change rate Δ p. The calculation method is mentioned above.
In some embodiments of the present invention, in the heating state, when the outdoor temperature Ta is less than 0 ℃ and the relationship between the target leaving water temperature Tt and the total returning water temperature Ti satisfies | Tt-Ti | > 10 ℃, the capacity output change rate Δ p is as shown in the following table:
in some embodiments of the present invention, also in the heating state, when the outdoor temperature Ta is greater than or equal to 0 ℃ and the relationship between the target leaving water temperature Tt and the total returning water temperature Ti satisfies | Tt-Ti | <10 ℃, the capacity output change rate Δ p is as shown in the following table:
as can be seen from the capability output change rate Δ p of the water modules 100 in the above two tables, when the water multi-connected system is started, there is a difference between the return water/discharge water temperature and the target outlet water temperature set by the user, the water multi-connected system is started by 1 water module, and then the starting number of the subsequent water modules is calculated by respectively looking up the tables periodically according to the heating temperature difference Δ th (n) and the heating water temperature change value Qh, thereby realizing the automatic loading of the water modules. After the water multi-connected system operates for a period of time and the return water/drainage temperature exceeds the target outlet water temperature set by the user, the water multi-connected system periodically checks the table according to the heating temperature difference value Delta Th (n) and the heating water temperature change value Qh respectively to calculate the closing number of the subsequent water modules, thereby realizing the automatic load shedding of the water modules.
In some embodiments of the present invention, the control module is further configured to count a running time t of the water module 100 and prioritize the water module according to the running time t.
Specifically, the smaller the running time t, the higher the priority of the water module. Each water module 100 is provided with an address code Wx, the control module acquires the smaller value of the running accumulated time of each water module 100, then the running priority order of the water modules 100 is arranged according to the ascending order, and when the running accumulated time is the same, the water fetching module runs preferentially with the smaller address code.
For example, the address codes of the water module 100 from left to right in fig. 1 are W1, W2, W3, W4, W5 and W6; the operation time is 100min, 90min, 80min, 130min, 140min and 120min, respectively, and then the priority operation sequence of the water module 100 is as follows: w3, W2, W1, W6, W4 and W5.
If the operation times of W1, W2, W3, W4, W5 and W6 are: 140min, 90min, 80min, 130min, 140min, 120min, the priority operation order of the water module 100 is: w3, W2, W6, W4, W1 and W5.
Compared with the prior art, the technical scheme of the invention has the following technical effects:
according to the invention, the heating difference value, the refrigerating difference value and the water temperature change value Q are calculated, the opening number of the water modules is periodically judged, the online number of the water modules is adjusted in real time, and the automatic loading and unloading of the water modules in the water multi-connected system are realized; the automatic loading and unloading in the whole process can be realized after the water temperature is set by a user, other operations are not needed, and the energy is saved.
In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A water multiplex system comprising:
the water modules are connected in parallel through a water return pipeline and a water drainage pipeline;
the outdoor unit module is connected with the water module through a refrigerant pipeline;
the temperature sensor is arranged on the water return pipeline and the water discharge pipeline and is used for acquiring total water return temperature Ti and total water discharge temperature To;
the control module is in communication connection with the temperature sensor and is used for receiving temperature data acquired by the temperature sensor;
the control module is used for setting a target drainage temperature Tt, calculating a water temperature change value Q and controlling the opening number M (n) of the water module at the moment n according to the water temperature change value Q.
2. A water cascade system as claimed in claim 1, wherein the water temperature variation value Q includes a cooling water temperature variation value Qc and a heating water temperature variation value Qh.
3. A water cascade system as claimed in claim 2, wherein the refrigerating water temperature variation value Qc is calculated as Qc = Δ Tc (n) - Δ Tc (n-1), where Δ Tc (n) is a refrigerating difference value, i.e. a difference value between the total water return temperature Ti or the total water discharge temperature To at the time n and the target water discharge temperature Tt in the refrigerating state.
4. A water cascade system as claimed in claim 3, wherein the heating water temperature variation value Qh is calculated by Qh = Δ Th (n) - Δ Th (n-1), where Δ Th (n) is a heating difference value, i.e. a difference value between the target discharge water temperature Tt at the time n in the heating state and the total return water temperature Ti or the total discharge water temperature To.
5. A water cascade system as claimed in claim 3, wherein when TU =0 can be selected, the refrigeration difference Δ tc (n) is calculated as Δ tc (n) = Ti-Tt; when TU =1 is selected, the cooling difference Δ tc (n) is calculated by Δ tc (n) = To-Tt.
6. The water cascade system as claimed in claim 4, wherein when TU =0 can be selected, the heating difference Δ th (n) is calculated as Δ th (n) = Tt-Ti; when TU =1 can be selected, the heating difference Δ th (n) is calculated by Δ th (n) = Tt-To.
7. A water multi-connected system as claimed in claim 6, wherein the calculation formula of the opening number M (n) of the water modules is as follows: m (n) = total _ eq × (n); wherein, the total _ eq is the total number of the water modules in a non-alarm state, and p (n) is the capacity output rate of the water modules.
8. A water multi-connected system as claimed in claim 7, wherein the capacity output rate p (n) is calculated by the formula: p (n) = p (n-1) + Δ p, where Δ p is the rate of change of capacity output of the water module.
9. A water cascade system as claimed in claim 8, wherein the control module is configured to control the capacity output change rate Δ p to increase when the cooling water temperature change value Qc or the heating water temperature change value Qh increases.
10. A water multiplex system according to claim 8, wherein said control module is configured to control said capacity output change rate Δ p to increase when said cooling difference Δ tc (n) or said heating difference Δ th (n) increases.
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| CN205425322U (en) * | 2015-12-15 | 2016-08-03 | 湖南艾迪希网络能源有限公司 | Multisource heat pipe economizer system |
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