CN109737468B - Energy system and control method thereof - Google Patents
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- CN109737468B CN109737468B CN201910018796.6A CN201910018796A CN109737468B CN 109737468 B CN109737468 B CN 109737468B CN 201910018796 A CN201910018796 A CN 201910018796A CN 109737468 B CN109737468 B CN 109737468B
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Abstract
The invention belongs to the field of energy utilization, and discloses an energy system and a control method thereof, wherein the energy system comprises: the range hood, the transfer heat exchanger and the water heater are communicated in a heat conduction mode in sequence, the equipment forms two heat exchange groups, the two heat exchange groups are respectively a first heat exchange group and a second heat exchange group, the transfer heat exchangers of the first heat exchange group and the second heat exchange group are communicated in a heat conduction mode through the heat exchangers, the control method comprises the steps of enabling the heat of the range hood in the group to be transmitted to the water heater according to the temperature conditions of the range hood and the water heater of the first heat exchange group, combining the temperature change rate of the water heater, selecting whether to receive heat compensation from the second heat exchange group, and enabling the heat of the two range hoods to be reasonably supplied to the two water heaters.
Description
Technical Field
The invention relates to the technical field of energy utilization, in particular to an energy system and a control method thereof.
Background
An energy source is a resource capable of providing energy, and the energy source generally refers to heat energy, electric energy, light energy, mechanical energy, chemical energy, and the like. Energy systems typically include modules that provide energy and modules that consume energy. Such as a module that provides heat and a module that consumes heat. In homes, hotels, and the like, there are various devices (for example, range hoods, water heaters, and the like) capable of generating heat and consuming heat, and heat between the devices may be exchanged through a heat transfer medium. A plurality of range hoods and a plurality of water heaters exist in a living community, and two water heaters and two range hoods can be considered to be controlled by being combined into a group. How to control two range hoods to reasonably supply heat to two water heaters is to be solved.
Disclosure of Invention
The embodiment of the invention provides an energy system and a control method thereof, which aim to solve the problem that two range hoods reasonably supply heat to two water heaters. The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview and is intended to neither identify key/critical elements nor delineate the scope of such embodiments. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is presented later.
According to a first aspect of embodiments of the present invention, there is provided a control method of an energy system, the energy system including: the range hood, the transfer heat exchanger and the water heater are communicated in a heat conduction mode in sequence, the equipment forms two heat exchange sets which are respectively a first heat exchange set and a second heat exchange set, the transfer heat exchangers of the first heat exchange set and the second heat exchange set are communicated in a heat conduction mode through the heat exchangers, and the control method comprises the following steps:
controlling the opening degree of a heat-absorbing end heat-conducting valve of the transit heat exchanger in the first heat exchange group according to the temperatures of the range hood and the water heater in the first heat exchange group;
controlling the opening degree of a heat conducting valve at the heat release end of a transfer heat exchanger of the first heat exchange group according to the temperature condition of a water heater of the first heat exchange group;
determining the temperature change rate of the water heater when a heat conducting valve at the heat release end of the transfer heat exchanger of the first heat exchange set is opened for a first time;
selecting whether to detect the opening degree of a heat conducting valve of a transfer heat exchanger of a second heat exchange group or not according to the temperature change rate of the water heater of the first heat exchange group and the opening degree of the heat conducting valve at the heat release end of the transfer heat exchanger;
and controlling the opening and closing of the valve of the heat exchanger according to the opening degree of the heat conduction valve of the transfer heat exchanger of the second heat exchange set.
In some optional embodiments, the selecting whether to detect the opening degree of the heat conducting valve of the intermediate heat exchanger of the second heat exchange group according to the temperature change rate of the water heater of the first heat exchange group and the opening degree of the heat conducting valve at the heat release end of the intermediate heat exchanger includes:
and when the temperature change rate of the water heater of the first heat exchange group is smaller than or equal to a first preset value and the opening degree of the heat conduction valve at the heat release end of the transit heat exchanger reaches 100%, the opening degrees of the heat conduction valves at the heat absorption end and the heat release end of the second heat exchange group are detected.
In some optional embodiments, the controlling the opening and closing of the valve of the heat exchanger according to the opening degree of the heat conducting valve of the intermediate heat exchanger of the second heat exchange group includes:
determining the opening degrees of heat conducting valves at a heat absorption end and a heat release end of a transfer heat exchanger of the second heat exchange set;
and when the opening degree of a heat conduction valve at the heat absorption end of the transfer heat exchanger of the second heat exchange set is greater than 0% and the opening degree of a heat conduction valve at the heat release end is less than or equal to the first opening degree, opening the valve of the heat exchanger.
In some optional embodiments, the controlling the opening degree of the heat-absorbing-end heat-conducting valve of the transit heat exchanger in the first heat exchange group according to the temperatures of the range hood and the water heater in the first heat exchange group includes:
calculating the temperature T of the range hood1Temperature T of water heater2Difference value △ T of1；
When △ T1When the heat absorption value is less than or equal to a second preset value, setting the heat conduction valve of the corresponding heat absorption end to be 0%;
when △ T1And when the opening degree of the heat conduction valve at the heat absorption end is larger than a second preset value, the opening degree of the heat conduction valve at the heat absorption end is set to be 100 percent.
In some optional embodiments, the controlling the opening degree of the heat conducting valve at the heat releasing end of the intermediate heat exchanger of the first heat exchange group according to the temperature condition of the water heater of the first heat exchange group includes:
calculating the actual temperature T of the water heater2Difference △ T from target temperature T2；
When △ T2When the opening degree is smaller than or equal to a third preset value, setting the heat conducting valve of the corresponding heat release end to be a second opening degree;
when △ T2When the opening degree of the heat conducting valve is larger than the third preset value and smaller than or equal to the fourth preset value, setting the heat conducting valve of the corresponding heat releasing end to be a third opening degree;
when △ T2When the opening degree of the heat conducting valve is larger than a fourth preset value, setting the heat conducting valve at the heat releasing end to be a fourth opening degree;
the second opening degree is smaller than the third opening degree, the third opening degree is smaller than the fourth opening degree, and the third preset value is smaller than the fourth preset value.
In some optional embodiments, the second opening degree is 40% to 60%, the third opening degree is 61% to 80%, and the fourth opening degree is 81% to 100%.
According to a second aspect of embodiments of the present invention, there is provided an energy source system including: the heat exchanger comprises a range hood, transfer heat exchangers and a water heater which are communicated in a heat conduction mode in sequence, wherein the range hood, the transfer heat exchangers and the water heater are communicated in a heat conduction mode, the number of the heat exchange sets is two, and the two heat exchange sets are respectively a first heat exchange set and a second heat exchange set; and the controller is used for controlling the opening degree of a heat conducting valve of the transfer heat exchanger.
In some optional embodiments, the controller comprises:
the first control unit is used for controlling the opening degree of a heat-absorbing end heat-conducting valve of the transit heat exchanger in the first heat exchange set according to the temperatures of the range hood and the water heater in the first heat exchange set; controlling the opening degree of a heat conducting valve at the heat release end of the transfer heat exchanger of the first heat exchange group according to the temperature condition of the water heater of the first heat exchange group;
the first determining unit is used for determining the temperature change rate of the water heater when a heat conducting valve at the heat release end of the transfer heat exchanger in the first heat exchange set is opened for a first time;
the judging unit is used for selecting whether to detect the opening degree of the heat conducting valve of the transfer heat exchanger of the second heat exchange group or not according to the temperature change rate of the water heater of the first heat exchange group and the opening degree of the heat conducting valve at the heat releasing end of the transfer heat exchanger;
and the second control unit is used for controlling the opening and closing of the valve of the heat exchanger according to the opening degree of the heat conduction valve of the transfer heat exchanger of the second heat exchange set.
In some optional embodiments, the determining unit is specifically configured to detect the opening degrees of the heat conduction valves at the heat absorption end and the heat release end of the second heat exchange group when the temperature change rate of the water heater of the first heat exchange group is less than or equal to a first preset value and the opening degree of the heat conduction valve at the heat release end of the intermediate heat exchanger reaches 100%.
In some optional embodiments, the second control unit comprises:
the determining subunit is used for determining the opening degrees of heat conducting valves at a heat absorption end and a heat release end of the transfer heat exchanger of the second heat exchange group;
a control subunit for opening the valve of the heat exchanger when the opening of the heat-absorbing end heat-conducting valve of the transfer heat exchanger of the second heat exchange set is greater than 0% and the opening of the heat-conducting valve of the heat-releasing end is less than or equal to the first opening
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
the heat of the range hood in the first heat exchange group can be transferred to the water heater according to the temperature conditions of the range hood and the water heater of the first heat exchange group, and whether heat compensation is received from the second heat exchange group or not is selected according to the temperature change rate of the water heater, so that the heat of the two range hoods is reasonably supplied to the two water heaters.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a flowchart illustrating a control method of an energy system according to an exemplary embodiment;
FIG. 2 is a block diagram of an energy system shown in accordance with an exemplary embodiment;
fig. 3 is a flowchart illustrating a control method of an energy system according to another exemplary embodiment;
fig. 4 is a flowchart illustrating a control method of an energy system according to another exemplary embodiment;
fig. 5 is a block diagram illustrating a controller of an energy system according to an exemplary embodiment;
fig. 6 is a block diagram illustrating a configuration of a controller of an energy system according to another exemplary embodiment;
fig. 7 is a schematic diagram of an energy system according to an exemplary embodiment;
fig. 8 is a schematic structural view of the relay heat exchanger according to an exemplary embodiment.
Detailed Description
The following description and the drawings sufficiently illustrate specific embodiments herein to enable those skilled in the art to practice them. Portions and features of some embodiments may be included in or substituted for those of others. The scope of the embodiments herein includes the full ambit of the claims, as well as all available equivalents of the claims. The terms "first," "second," and the like, herein are used solely to distinguish one element from another without requiring or implying any actual such relationship or order between such elements. In practice, a first element can also be referred to as a second element, and vice versa. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a structure, apparatus, or device that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such structure, apparatus, or device. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a structure, device or apparatus that comprises the element. The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like herein, as used herein, are defined as orientations or positional relationships based on the orientation or positional relationship shown in the drawings, and are used for convenience in describing and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention. In the description herein, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may include, for example, mechanical or electrical connections, communications between two elements, direct connections, and indirect connections via intermediary media, where the specific meaning of the terms is understood by those skilled in the art as appropriate.
Herein, the term "plurality" means two or more, unless otherwise specified.
Herein, the character "/" indicates that the preceding and following objects are in an "or" relationship. For example, A/B represents: a or B.
Herein, the term "and/or" is an associative relationship describing objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.
A control method of an energy system, as shown in fig. 2, the energy system includes: the range hood 1011, the transfer heat exchanger 11 and the water heater 1021 are communicated in a heat conduction mode in sequence, the above devices form two heat exchange sets, the two heat exchange sets are respectively a first heat exchange set 10 and a second heat exchange set 20, the transfer heat exchangers 11 of the first heat exchange set 10 and the second heat exchange set 20 are communicated in a heat conduction mode through a heat exchanger 105, and as shown in fig. 1, the control method comprises the following steps:
s201, controlling the opening degree of a heat-absorbing end heat-conducting valve of a transit heat exchanger in the first heat exchange set according to the temperatures of the range hood and the water heater of the first heat exchange set;
s202, controlling the opening of a heat conducting valve at the heat release end of a transfer heat exchanger of the first heat exchange set according to the temperature condition of a water heater of the first heat exchange set;
s203, determining the temperature change rate of the water heater when a heat conducting valve at the heat release end of the transfer heat exchanger in the first heat exchange set is opened for a first time;
s204, selecting whether to detect the opening degree of a heat conduction valve of a transfer heat exchanger of a second heat exchange set or not according to the temperature change rate of the water heater of the first heat exchange set and the opening degree of the heat conduction valve at the heat release end of the transfer heat exchanger;
and S205, controlling the opening and closing of a valve of the heat exchanger according to the opening degree of a heat conduction valve of the intermediate heat exchanger of the second heat exchange set.
In S201, a heat conducting valve at a heat absorbing end of a transfer heat exchanger in a first heat exchange set controls the opening degree according to the temperatures of a range hood and a water heater, so that the heat of the range hood enters the transfer heat exchanger through the heat absorbing end under the condition that the temperature conditions of the range hood and the water heater are proper; in S202, the opening degree of the heat-conducting valve at the heat-releasing end of the intermediate heat exchanger of the first heat exchange group is controlled according to the temperature condition of the water heater of the first heat exchange group; in S203, after the heat-conducting valve at the heat release end is opened for a period of time, determining the temperature change condition of the water heater; s204, judging whether the water heater of the first heat exchange group needs more heat or not according to the temperature change condition and the opening degree of a heat conduction valve of the transfer heat exchanger, and then selecting whether the opening degree of the heat conduction valve of the transfer heat exchanger of the second heat exchange group is detected or not; s205, whether the second heat exchange group has the surplus heat for use or not is judged based on the opening degree of the heat conduction valve of the second heat exchange group, and when the surplus heat exists, the surplus heat is transmitted to the water heater of the first heat exchange group for utilization. Thus, the heat of the two range hoods is reasonably supplied to the two water heaters.
In this embodiment, the heat exchanger may be an existing compact heat exchanger. In an actual use scene, for example, in a living community, each family is provided with a water heater, a range hood and a transfer heat exchanger, the range hoods and the water heaters of two families are organized into a group, the transfer heat exchangers of the two families are communicated in a heat conduction mode through the heat exchangers, the heat exchangers are provided with valves, and heat transfer or heat transfer stopping is realized by controlling the opening and closing of the valves. It can be understood that the water heater can receive the heat generated by the range hood and simultaneously can heat by using electric energy, gas and other modes.
Optionally, the first time period is t, and t is more than or equal to 5min and less than or equal to 10 min. Wherein the temperature change rate k is (T)4-T3) T, wherein T4Opening the temperature of the water heater for the first time duration for the heat release end heat conduction valve of the transfer heat exchanger of the first heat exchange group, wherein the temperature is unit ℃; t is3Is the initial temperature of the water heater in units; t is the first duration in min. The temperature change rate reflects the temperature rise speed of the water heater.
In an embodiment of the present invention, selecting whether to detect the opening degree of the heat conducting valve of the intermediate heat exchanger of the second heat exchange group according to the temperature change rate of the water heater of the first heat exchange group and the opening degree of the heat conducting valve at the heat release end of the intermediate heat exchanger includes: and when the temperature change rate of the water heater of the first heat exchange group is smaller than or equal to a first preset value and the opening degree of the heat conduction valve at the heat release end of the transit heat exchanger reaches 100%, the opening degrees of the heat conduction valves at the heat absorption end and the heat release end of the second heat exchange group are detected.
When the temperature change rate of the range hood of the first heat exchange group is smaller than or equal to a first preset value, the temperature rise rate of the range hood is not ideal, at the moment, if the heat conduction valve at the heat release end of the corresponding transfer heat exchanger reaches 100%, the heat supply of the water heater in unit time is indicated, the heat provided by the range hood of the first heat exchange group is insufficient, and therefore the opening degrees of the heat absorption end and the heat release end of the second heat exchange group are detected. Optionally, the first preset value is kIs provided with，2℃/min≤kIs provided with≤3℃/min。
Optionally, in the first heat exchange group, the range hood is communicated with the transfer heat exchanger in a heat exchange manner through the first terminal heat exchanger, and the water heater is communicated with the transfer heat exchanger in a heat exchange manner through the second terminal heat exchanger. In the second heat exchange group, the range hood is communicated with the transfer heat exchanger in a heat exchange mode through the first terminal heat exchanger, and the water heater is communicated with the transfer heat exchanger in a heat exchange mode through the second terminal heat exchanger.
In an embodiment of the present invention, as shown in fig. 3, the controlling the opening and closing of the valve of the heat exchanger according to the opening degree of the heat transfer valve of the intermediate heat exchanger of the second heat exchange group includes:
s301, determining the opening degrees of heat conducting valves at a heat absorbing end and a heat releasing end of a transfer heat exchanger of the second heat exchange group;
s302, when the opening degree of a heat conduction valve at a heat absorption end of the transfer heat exchanger of the second heat exchange set is larger than 0% and the opening degree of a heat conduction valve at a heat release end is smaller than or equal to the first opening degree, the valve of the heat exchanger is opened.
In S301, when the heat-absorbing end heat-conducting valve of the relay heat exchanger in the second heat exchange group is in an open state, it indicates that the water heaters in the group are also absorbing heat; when the heat conducting valve at the heat releasing end is in an opening state, the temperature conditions of the range hood and the water heater are appropriate, and the transfer heat exchanger can absorb the heat of the range hood. In S302, when the heat-absorbing end heat-conducting valve of the relay heat exchanger of the second heat exchange set is greater than 0%, that is, the heat-conducting valve is in an open state, if the heat-conducting valve of the heat-releasing end is smaller than or equal to the first opening degree, it indicates that the heat-absorbing capacity of the water heater of the second heat exchange set is small, and excess heat in the relay heat exchanger can be utilized, and the valve of the heat exchanger can be opened to transfer part of the heat to the second heat exchange set. Thus, the heat of the two range hoods is reasonably supplied to the two water heaters.
Alternatively, the first opening degree is 40%. When the opening degree of a heat conduction valve at the heat absorption end of the transfer heat exchanger of the second heat exchange set is larger than 0% and the opening degree of a heat conduction valve at the heat release end is smaller than or equal to 40%, the valve of the heat exchanger is opened to transfer heat into the first heat exchange set. Thus, the heat of the two range hoods is reasonably distributed and supplied to the two water heaters.
In an embodiment of the present invention, as shown in fig. 4, the controlling the opening degree of the heat conducting valve at the heat absorbing end of the heat exchanger in the first heat exchange set according to the temperatures of the range hood and the water heater in the first heat exchange set includes:
s303, calculating the temperature T of the range hood1Temperature T of water heater2Difference value △ T of1；
S304, when △ T1Setting the heat conducting valve at the heat absorbing end to 0% when the temperature is lower than or equal to the second preset value, and setting △ T as the temperature is higher than the first preset value1And when the opening degree of the heat conduction valve at the heat absorption end is larger than a second preset value, the opening degree of the heat conduction valve at the heat absorption end is set to be 100 percent.
In this embodiment, △ T1＝T1-T2Wherein T is1Temperature, T, of the cooking-fume exhauster2In the first heat exchange group, the opening degree of the heat conducting valve at the heat absorbing end of the corresponding transfer heat exchanger is controlled according to the temperature difference value between the range hood and the water heater, so that the heat conducting valve at the heat releasing end can be kept in an open state under the condition that the temperature difference between the range hood and the water heater is proper, and the heat generated by the range hood can timely enter the transfer heat exchanger when △ T is reached1When the temperature is less than or equal to a second preset value, the heat is difficult to transfer between the range hood and the water heater, the heat conducting valve at the heat releasing end can be closed, namely the opening of the heat conducting valve is adjusted to 0 percent, and when the temperature is △ T1When the temperature is higher than the second preset value, the range hood and the hot water are usedThe temperature difference between the devices is proper, and heat transfer can be carried out, so that the heat conducting valve at the heat absorption end is adjusted to 100%, and heat enters the transfer heat exchanger through the range hood. Like this, with the heat transfer to the transfer heat exchanger that the lampblack absorber produced, pass through heat exchanger heat transfer between the transfer heat exchanger to make a water heater can utilize the heat of production of another lampblack absorber when the condition is suitable.
In one embodiment of the present invention, the controlling the opening degree of the heat conducting valve at the heat releasing end of the intermediate heat exchanger of the first heat exchange group according to the temperature condition of the water heater of the first heat exchange group comprises:
calculating the actual temperature T of the water heater2Difference △ T from target temperature T2；
When △ T2When the opening degree is smaller than or equal to a third preset value, setting the heat conducting valve at the heat releasing end of the corresponding transfer heat exchanger to be a second opening degree;
when △ T2When the opening degree of the heat conducting valve is larger than the third preset value and smaller than or equal to the fourth preset value, setting the heat conducting valve at the heat releasing end of the corresponding transfer heat exchanger to be a third opening degree;
when △ T2When the opening degree of the heat conducting valve is larger than a fourth preset value, setting the heat conducting valve of the corresponding transfer heat exchanger to be a fourth opening degree;
the second opening degree is smaller than the third opening degree, the third opening degree is smaller than the fourth opening degree, and the third preset value is smaller than the fourth preset value.
By this example, △ T2Comparing with the third preset value and the fourth preset value according to △ T2The heat conducting valve at the heat releasing end of the transfer heat exchanger of the first heat exchange group is set to be in three different opening degrees. When the heat quantity needed by the water heater is smaller, the opening degree of the heat conduction valve at the heat release end is smaller, and conversely, the opening degree of the heat conduction valve at the heat release end is larger.
In this embodiment, when △ T2When the value is less than or equal to a third preset value, △ T2In a smaller range, the difference between the actual temperature and the target temperature of the water heater is very small, for example, the actual temperature of the water heater in summer is higher, the requirement of the user on the water temperature is not high, the target temperature may be set to be lower, and at this time, the actual temperature and the target temperature of the water heater are set to be lowerThe heat transfer valve at the heat release end is set to a second opening, optionally, the third predetermined value is 10 deg.C, exemplary, the actual temperature of the water heater is 30 deg.C, the target temperature is 35 deg.C, then △ T2When the temperature is 35-30 ℃ and 5 ℃ and the temperature is less than a third preset value, the heat conducting valve at the heat release end is set to be at a second opening degree when △ T is detected1Optionally, the fourth preset value is 30 ℃, illustratively, the actual temperature of the water heater is 30 ℃, the target temperature is 55 ℃, and △ T is then △ T1＝T2-T1When the temperature is 55-30 ℃ and 25 ℃, and the temperature is more than the third preset value and less than or equal to the fourth preset value, the heat conducting valve at the heat release end is set to be a third opening degree when △ T is measured2When the temperature of the water heater is higher than the second preset value, the heat conducting valve at the heat release end is set to be at the second opening degree, namely, the actual temperature of the water heater is higher than the target temperature, for example, when the water heater is used in winter, the target temperature of the water heater is usually set to be higher by a user, and the actual temperature of the water heater may be lower, at which time, the heat conducting valve at the heat release end needs to be set to be at the second opening degree2＝T2-T1And when the temperature is 55-15-40 ℃, and the temperature is 40 ℃ higher than a fourth preset value, setting the opening degree of the heat conducting valve at the heat release end as a fourth opening degree.
In one embodiment of the present invention, the first opening degree is 40% to 60%, the second opening degree is 61% to 80%, and the third opening degree is 81% to 100%. Thus, the heat of the two range hoods is reasonably supplied to the two water heaters.
An energy source system, as shown in fig. 7, comprising: the range hood 1011, the transfer heat exchanger 11 and the water heater 1021 are communicated in a heat conduction mode in sequence, the equipment forms two heat exchange sets, the two heat exchange sets are respectively a first heat exchange set 10 and a second heat exchange set 20, and the transfer heat exchangers 1011 of the first heat exchange set 10 and the second heat exchange set 20 are communicated in a heat conduction mode through a heat exchanger 105;
and a controller for controlling the opening degree of the heat transfer valve of the intermediate heat exchanger 11.
In an optional embodiment, the range hood 1011 is communicated with the transfer heat exchanger 11 in a heat conduction manner through the first terminal heat exchanger 1, the water heater 1021 is communicated with the transfer heat exchanger 11 in a heat conduction manner through the second terminal heat exchanger 2, the first terminal heat exchanger 1 and the second terminal heat exchanger 2 are both provided with a liquid inlet pipe 141 and a liquid outlet pipe 142 (i.e., a group of communicating pipe set 14), the first terminal heat exchanger 1 and the second terminal heat exchanger are communicated with a heat exchange device of the transfer heat exchanger 11 through two pipes, and the range hood 1011, the water heater 1021 and the transfer heat exchanger 11 are subjected to heat conversion through respective heat-conducting medium circulation.
In the relay heat exchanger 11 according to the embodiment of the present invention, when the heat absorbing end 111 of the relay heat exchanger 11 is communicated to the range hood 1011, the heat releasing end 112 is communicated to the water heater 1021, and the range hood 1011 supplies heat to the water heater 1021 through the relay heat exchanger 11.
Alternatively, as shown in fig. 8, the intermediate heat exchanger 11 includes:
a heat absorption end 111 communicated to the range hood 1011;
a heat releasing end 112 for communicating with a water heater 1021;
the unidirectional heat conducting device 120, the heat absorbing end 111 and the heat releasing end 112 are disposed at both ends of the unidirectional heat conducting device 120.
In an alternative embodiment, the heat absorbing end 111 of the intermediate heat exchanger 11 is implemented by a heat exchanging device, such as a plate heat exchanger, an evaporator, or a heat exchanging coil. The heat releasing end 112 is embodied by a heat exchanging device, such as a plate heat exchanger, a condenser, or a heat exchanging coil.
In an optional embodiment, the range hood 1 and the water heater 2 specifically employ a heat exchange device, such as a plate heat exchanger, an evaporator, or a heat exchange coil.
In the present embodiment, the unidirectional heat conducting device 120 realizes the (forced) heat exchange from the heat absorbing end 111 to the heat releasing end 112. Specifically, a refrigerant heat exchanger or a semiconductor temperature regulator may be used.
In an alternative embodiment, the refrigerant heat exchanger includes an evaporator 121, a compressor (not shown), a condenser 122 and an expansion valve (not shown), which are connected to form a heat exchange circuit. The intermediate heat exchanger 11 comprises two heat absorption chambers 113 and two heat release chambers 114 which are arranged in a heat insulation way; the evaporator 121 is disposed opposite to the heat absorbing end 111 of the intermediate heat exchanger 11 and is disposed in the heat absorbing chamber 113; the condenser 122 is disposed opposite to the heat releasing end 112 of the relay heat exchanger 11 and is disposed in the heat releasing chamber 114.
In one embodiment of the present invention, as shown in fig. 5, the controller 400 includes:
the first control unit 410 is used for controlling the opening degree of a heat absorption end heat conduction valve of the transit heat exchanger in the first heat exchange group according to the temperatures of the range hood and the water heater in the first heat exchange group; controlling the opening degree of a heat conducting valve at the heat release end of the transfer heat exchanger of the first heat exchange group according to the temperature condition of the water heater of the first heat exchange group;
the first determining unit 420 is configured to determine a temperature change rate of the water heater when a heat conducting valve at a heat releasing end of the relay heat exchanger in the first heat exchange set is opened for a first time period;
the judging unit 430 is configured to select whether to detect the opening degree of the heat conduction valve of the relay heat exchanger of the second heat exchange group according to the temperature change rate of the water heater of the first heat exchange group and the opening degree of the heat conduction valve at the heat release end of the relay heat exchanger;
and a second control unit 440, configured to control opening and closing of a valve of the heat exchanger according to an opening degree of a heat conduction valve of the intermediate heat exchanger of the second heat exchange set.
In this embodiment, the first control unit 410 controls the opening degrees of the heat conducting valves at the heat absorbing end and the heat releasing end of the relay heat exchanger in the first heat exchange set, the first determining unit 420 determines the temperature change rate of the water heater, the determining unit 430 determines whether the water heater in the first heat exchange set needs more heat based on the result of the first determining unit 420 and the opening degree of the heat conducting valve at the heat releasing end of the relay heat exchanger, and then selects whether to detect the opening degree of the heat conducting valve of the relay heat exchanger in the second heat exchange set, and the second control unit 440 controls the opening and closing of the valve of the heat exchanger based on the detection result of the determining unit 430. According to the opening degree of a heat conduction valve of the transfer heat exchanger of the second heat exchange set, whether the second heat exchange set has surplus heat for use or not can be judged, and when the surplus heat exists, the surplus heat can be transmitted to the water heater of the first heat exchange set for utilization. Therefore, the heat of the two range hoods is reasonably distributed and supplied to the two water heaters.
In an embodiment of the present invention, the determining unit 430 is specifically configured to detect the opening degrees of the heat conducting valves at the heat absorbing end and the heat releasing end of the second heat exchange group when the temperature change rate of the water heater of the first heat exchange group is less than or equal to a first preset value and the opening degree of the heat conducting valve at the heat releasing end of the intermediate heat exchanger reaches 100%.
In this embodiment, when the rate of change of the temperature of the water heater of the first heat exchange group is small and the heat release end valve of the relay heat exchanger is opened to the maximum, the heat condition of the second heat exchange group can be detected, and whether the available heat exists or not can be checked.
In one embodiment of the present invention, as shown in fig. 6, the second control unit 440 includes:
the determining sub-unit 441 is used for determining the opening degrees of heat conducting valves at a heat absorption end and a heat release end of the transfer heat exchanger of the second heat exchange group;
the control subunit 442 is configured to open a valve of the heat exchanger when the opening degree of the heat conduction valve at the heat absorption end of the intermediate heat exchanger of the second heat exchange set is greater than 0% and the opening degree of the heat conduction valve at the heat release end is less than or equal to the first opening degree.
The embodiment of the invention provides an energy system, wherein a controller enables the heat of range hoods in a first heat exchange group to be transferred to a water heater according to the temperature conditions of the range hoods and the water heater in the first heat exchange group, and selects whether to receive heat compensation from a second heat exchange group or not according to the temperature change rate of the water heater, so that the heat of two range hoods is reasonably supplied to the two water heaters.
With regard to the above-described embodiment apparatus, the specific manner in which each unit performs the operation has been described in detail in the embodiment related to the method, and will not be described in detail here.
The present invention is not limited to the structures that have been described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (9)
1. A control method of an energy system, characterized in that the energy system comprises: the range hood, the transfer heat exchanger and the water heater are communicated in a heat conduction mode in sequence, the equipment forms two heat exchange sets which are respectively a first heat exchange set and a second heat exchange set, the transfer heat exchangers of the first heat exchange set and the second heat exchange set are communicated in a heat conduction mode through the heat exchangers, and the control method comprises the following steps:
controlling the opening degree of a heat-absorbing end heat-conducting valve of the transit heat exchanger in the first heat exchange group according to the temperatures of the range hood and the water heater in the first heat exchange group;
controlling the opening degree of a heat conducting valve at the heat release end of a transfer heat exchanger of the first heat exchange group according to the temperature condition of a water heater of the first heat exchange group;
determining the temperature change rate of the water heater when a heat conducting valve at the heat release end of the transfer heat exchanger of the first heat exchange set is opened for a first time;
selecting whether to detect the opening degree of a heat conducting valve of a transfer heat exchanger of a second heat exchange group or not according to the temperature change rate of the water heater of the first heat exchange group and the opening degree of the heat conducting valve at the heat release end of the transfer heat exchanger;
and controlling the opening and closing of the valve of the heat exchanger according to the opening degree of the heat conduction valve of the transfer heat exchanger of the second heat exchange set.
2. The method for controlling the energy system according to claim 1, wherein the selecting whether to detect the opening degree of the heat conducting valve of the intermediate heat exchanger of the second heat exchange group according to the temperature change rate of the water heater of the first heat exchange group and the opening degree of the heat conducting valve at the heat releasing end of the intermediate heat exchanger comprises:
and when the temperature change rate of the water heater of the first heat exchange group is smaller than or equal to a first preset value and the opening degree of the heat conduction valve at the heat release end of the transit heat exchanger reaches 100%, the opening degrees of the heat conduction valves at the heat absorption end and the heat release end of the second heat exchange group are detected.
3. The method for controlling the energy system according to claim 1, wherein the controlling of the opening and closing of the valve of the heat exchanger according to the opening degree of the heat transfer valve of the intermediate heat exchanger of the second heat exchange group comprises:
determining the opening degrees of heat conducting valves at a heat absorption end and a heat release end of a transfer heat exchanger of the second heat exchange set;
and when the opening degree of a heat conduction valve at the heat absorption end of the transfer heat exchanger of the second heat exchange set is greater than 0% and the opening degree of a heat conduction valve at the heat release end is less than or equal to the first opening degree, opening the valve of the heat exchanger.
4. The method for controlling the energy system according to claim 1, wherein the controlling the opening degree of the heat conducting valve at the heat absorbing end of the transit heat exchanger in the first heat exchange set according to the temperatures of the range hood and the water heater in the first heat exchange set comprises:
calculating the temperature T of the range hood1Temperature T of water heater2Difference value △ T of1；
When △ T1When the heat absorption value is less than or equal to a second preset value, setting the heat conduction valve of the corresponding heat absorption end to be 0%;
when △ T1And when the opening degree of the heat conduction valve at the heat absorption end is larger than a second preset value, the opening degree of the heat conduction valve at the heat absorption end is set to be 100 percent.
5. The control method of the energy system according to claim 1, wherein the controlling the opening degree of the heat conducting valve at the heat releasing end of the intermediate heat exchanger of the first heat exchange group according to the temperature condition of the water heater of the first heat exchange group comprises:
calculating the actual temperature T of the water heater2Difference △ T from target temperature T2；
When △ T2When the opening degree is smaller than or equal to a third preset value, setting the heat conducting valve of the corresponding heat release end to be a second opening degree;
when △ T2When the opening degree of the heat conducting valve is larger than the third preset value and smaller than or equal to the fourth preset value, setting the heat conducting valve of the corresponding heat releasing end to be a third opening degree;
when △ T2When the opening degree of the heat conducting valve is larger than a fourth preset value, setting the heat conducting valve at the heat releasing end to be a fourth opening degree;
the second opening degree is smaller than the third opening degree, the third opening degree is smaller than the fourth opening degree, and the third preset value is smaller than the fourth preset value.
6. The control method of the energy system according to claim 5, wherein the second opening degree is 40% to 60%, the third opening degree is 61% to 80%, and the fourth opening degree is 81% to 100%.
7. An energy system, comprising:
the heat exchanger comprises a range hood, transfer heat exchangers and a water heater which are communicated in a heat conduction mode in sequence, wherein the range hood, the transfer heat exchangers and the water heater are communicated in a heat conduction mode, the number of the heat exchange sets is two, and the two heat exchange sets are respectively a first heat exchange set and a second heat exchange set; the controller is used for controlling the opening degree of a heat conducting valve of the transfer heat exchanger;
wherein the controller includes:
the first control unit is used for controlling the opening degree of a heat-absorbing end heat-conducting valve of the transit heat exchanger in the first heat exchange set according to the temperatures of the range hood and the water heater in the first heat exchange set; controlling the opening degree of a heat conducting valve at the heat release end of the transfer heat exchanger of the first heat exchange group according to the temperature condition of the water heater of the first heat exchange group;
the first determining unit is used for determining the temperature change rate of the water heater when a heat conducting valve at the heat release end of the transfer heat exchanger in the first heat exchange set is opened for a first time;
the judging unit is used for selecting whether to detect the opening degree of the heat conducting valve of the transfer heat exchanger of the second heat exchange group or not according to the temperature change rate of the water heater of the first heat exchange group and the opening degree of the heat conducting valve at the heat releasing end of the transfer heat exchanger;
and the second control unit is used for controlling the opening and closing of the valve of the heat exchanger according to the opening degree of the heat conduction valve of the transfer heat exchanger of the second heat exchange set.
8. The energy system according to claim 7, wherein the determining unit is specifically configured to detect the opening degrees of the heat conducting valves at the heat absorbing end and the heat releasing end of the second heat exchange group when the rate of change of the water heater temperature of the first heat exchange group is less than or equal to a first preset value and the opening degree of the heat conducting valve at the heat releasing end of the intermediate heat exchanger reaches 100%.
9. The energy system according to claim 7, wherein the second control unit comprises:
the determining subunit is used for determining the opening degrees of heat conducting valves at a heat absorption end and a heat release end of the transfer heat exchanger of the second heat exchange group;
and the control subunit is used for opening the valve of the heat exchanger when the opening degree of the heat-conducting valve at the heat absorption end of the transfer heat exchanger of the second heat exchange group is greater than 0% and the opening degree of the heat-conducting valve at the heat release end is less than or equal to the first opening degree.
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| JP2009229028A (en) * | 2008-03-25 | 2009-10-08 | Hara Tech:Kk | Adaptor device and refrigerant recovery device |
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| CN103884210B (en) * | 2013-12-26 | 2016-06-08 | 江苏金通灵流体机械科技股份有限公司 | Total heat recovery hot-water system |
| CN104534653B (en) * | 2014-12-30 | 2018-03-06 | 黑龙江国德节能服务有限公司 | Campus dining room sewage heat energy from waste gas recycling device and circulation utilization method |
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| CN103398627A (en) * | 2013-08-19 | 2013-11-20 | 大连交通大学 | Multi-source fluid waste heat recovery and comprehensive utilization system |
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Inventor after: Liang Haishan Inventor after: Yu Yang Inventor before: Yu Yang |
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Effective date of registration: 20201103 Address after: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee after: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Patentee after: Haier Smart Home Co., Ltd. Address before: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee before: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. |