CN112443904A - Household water machine - Google Patents
Household water machine Download PDFInfo
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- CN112443904A CN112443904A CN202011025777.5A CN202011025777A CN112443904A CN 112443904 A CN112443904 A CN 112443904A CN 202011025777 A CN202011025777 A CN 202011025777A CN 112443904 A CN112443904 A CN 112443904A
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- Prior art keywords
- water pump
- main
- outdoor unit
- water
- closed
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/06—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units
- F24F3/065—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units with a plurality of evaporators or condensers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
Abstract
The invention discloses a household water machine, which comprises a main system, a plurality of tail end systems and a buffer tank, wherein the main system comprises a water inlet pipe, a water outlet pipe and a water outlet pipe; the main system comprises a main water pump and an outdoor unit, and the main water pump, the outdoor unit and the buffer water tank form a main circulation loop; the tail end system comprises a secondary water pump and a plurality of tail end devices, wherein the secondary water pump, each tail end device and the buffer water tank form a secondary circulation loop. By applying the technical scheme of the invention, the water circulation in each circulation loop of the household water machine is relatively independent, and the secondary water pump does not need to be completely started during operation, thereby saving energy and reducing consumption; and the main system that the off-premises station is located, the water resistance is very little and invariable, does not receive the quantity influence that the terminal equipment actually opened, the warning that can not appear leading to because of discharge instability is shut down.
Description
Technical Field
The application relates to the technical field of air conditioner control, in particular to a household water machine.
Background
In recent years, the household water machine is different in air-conditioning market, the share in the market is promoted year by year, and more families use the household water machine as ground heating and fan coil refrigeration. The household water machine is one kind of central air conditioner, and includes outdoor unit, water pump, buffering water tank and end equipment. When cold water circulates to the end equipment, the room realizes refrigeration, and when hot water circulates to the end equipment, the room realizes heating. The terminal equipment mainly refers to equipment used for cooling or heating in each room, such as fan coils or floor heating.
At present, main force in the industry is concentrated on developing a main machine, application research on end equipment is relatively less, the main application form of the household water machine on the end equipment is shown in figure 1, a water pump and an outdoor unit are used for linkage control to provide power for circulation of the whole water system, and in order to improve the application range of one water pump, a water pump with larger power is generally selected. Meanwhile, a water flow switch is arranged in the outdoor unit, when the water flow passing through the outdoor unit is smaller than a certain value, the outdoor unit enters an unreliable state in operation, and the outdoor unit can alarm and stop. With the increase of the number of terminal equipment (or the number of rooms), the pipelines of a water system are correspondingly increased, the resistance of the whole water circulation system is increased, the water flow is reduced under the condition that the power of a water pump is fixed, the water flow is possibly lower than the flow switch limit value of an outdoor unit, the outdoor unit can be alarmed and stopped at the moment, the operation is unreliable, and customer complaints are often caused. The opening quantity of different terminal equipment can also influence the size of the circulating water flow of the whole machine, the water flow of the whole machine shows instability along with the opening quantity of the terminal equipment, and if the minimum flow is lower than the flow switch value of the whole machine, the whole machine can also alarm and shut down. The high-power water pump must be normally started no matter the terminal equipment is opened or fully opened, and the control mode is not energy-saving and has large power consumption.
Based on the above, how to provide a simple, reliable and energy-saving household water machine becomes a technical problem to be solved urgently in the field.
Disclosure of Invention
Because the household water machine in the prior art has the problems of low energy saving and unreliable operation, the invention provides the household water machine which comprises a main system, a plurality of tail end systems and a buffer tank;
the main system comprises a main water pump and an outdoor unit, and the main water pump, the outdoor unit and the buffer water tank form a main circulation loop;
the tail end system comprises a secondary water pump and a plurality of tail end devices, wherein the secondary water pump, each tail end device and the buffer water tank form a secondary circulation loop.
In some embodiments, each end device is provided with a corresponding wire controller, and each wire controller is used for controlling the on-off state of the corresponding end device and the secondary water pump.
In some embodiments, in each of said end-systems, when either of said end-devices is turned on, then said secondary water pump is turned on; when all the end equipment is turned off, the secondary water pump is turned off.
In some embodiments, the outdoor unit includes a controller that controls on and off states of the outdoor unit and the main water pump based on an on and off state of each of the secondary water pumps.
In some embodiments, when any one of the secondary water pumps is started, the outdoor unit and the main water pump are started; and when all the secondary water pumps are closed, the outdoor unit and the main water pump are closed.
In some embodiments, the end system further comprises a relay, a control circuit of the relay is connected with each wire controller, and an output circuit of the relay is respectively connected with the controller and the secondary water pump.
In some embodiments, the line controller is provided with a terminal dry contact, and when the line controller controls the corresponding terminal device to be opened, the terminal dry contact is closed; when the wire controller controls the corresponding terminal equipment to be closed, the terminal dry contact is disconnected.
In some embodiments, in each of the end systems, the end dry contacts are connected to the control circuit of the relay, and when any of the end dry contacts is closed, the control circuit of the relay is energized, the output circuit of the relay is closed, and the secondary water pump is energized to be turned on.
In some embodiments, the controller is provided with a main contact, and when the main contact is closed, the controller controls the outdoor unit and the main water pump to be started; when the main contact is disconnected, the controller controls the outdoor unit and the main water pump to be closed.
In some embodiments, the trunk contact is connected to the output circuit of each relay, and when the control circuit of any one of the relays is energized, the output circuit of the relay is closed, and the trunk contact is closed.
The invention discloses a household water machine, which comprises a main system, a plurality of tail end systems and a buffer tank, wherein the main system comprises a water inlet pipe, a water outlet pipe and a water outlet pipe; the main system comprises a main water pump and an outdoor unit, and the main water pump, the outdoor unit and the buffer water tank form a main circulation loop; the tail end system comprises a secondary water pump and a plurality of tail end devices, wherein the secondary water pump, each tail end device and the buffer water tank form a secondary circulation loop. By applying the technical scheme of the invention, the water circulation in each circulation loop of the household water machine is relatively independent, and the secondary water pump does not need to be completely started during operation, thereby saving energy and reducing consumption; and the main system that the off-premises station is located, the water resistance is very little and invariable, does not receive the quantity influence that the terminal equipment actually opened, the warning that can not appear leading to because of discharge instability is shut down.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, 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 application, 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 diagram showing a structure of a household water machine in the prior art;
FIG. 2 is a schematic diagram showing the structure of the household water machine in the embodiment of the present invention;
fig. 3 is a schematic diagram showing an electric control structure of the household water machine in the embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, 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 application.
In the description of the present application, 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 in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
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 application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Because the household water machine in the prior art has the problems of low energy saving and unreliable operation, the invention provides the household water machine which comprises a main system, a plurality of tail end systems and a buffer tank;
the main system comprises a main water pump and an outdoor unit, and the main water pump, the outdoor unit and the buffer water tank form a main circulation loop;
the tail end system comprises a secondary water pump and a plurality of tail end devices, wherein the secondary water pump, each tail end device and the buffer water tank form a secondary circulation loop.
The number of the end systems can be multiple according to specific implementation requirements, and in order to facilitate understanding of the technical scheme of the invention, two end systems are introduced in the embodiment of the invention.
As shown in fig. 2, the main system a includes a main water pump a and an outdoor unit, and the main water pump a, the outdoor unit and the buffer water tank form a main circulation loop; the tail end system B comprises a secondary water pump B and tail end equipment (a wind disc, a floor heating system and the like) in each room B (namely a room B1-a room BN), and the secondary water pump B, the tail end equipment and a buffer water tank form a secondary circulation loop; the terminal system C comprises a secondary water pump C and terminal equipment (wind plate, floor heating and the like) in each room C (namely, room C1-room CN), and the secondary water pump C, the terminal equipment and the buffer water tank form a secondary circulation loop. Because each circulation loop is provided with an independent water pump, the respective water circulation is relatively independent, namely, the water circulation is carried out in one circulation loop, and the water flow of other circulation loops is not influenced. The main system A where the outdoor unit is located has small and constant water resistance, is not influenced by the number of terminal equipment actually started, and cannot be stopped due to alarm caused by unstable water flow.
The buffer water tank is used for storing water quantity to enable each circulation loop to have enough circulating water for circulation, and in the embodiment, one buffer water tank is selected to form a plurality of water circulation loops, but the invention is not limited to the above, and in the specific implementation process, one or more buffer water tanks can be arranged according to different specific implementation scenes, and corresponding water paths can be arranged. Meanwhile, due to the existence of the buffer water tank, a large amount of work energy of the outdoor unit can be stored, and when the outdoor unit is shut down due to operations such as defrosting, the water temperature in the whole water circulation system can be ensured to be stable without sudden rising and falling.
The main water pump A can be arranged inside the outdoor unit or outside the outdoor unit, and usually, the scheme that the main water pump A is arranged inside the outdoor unit is adopted, so that the outdoor unit is convenient to install on site. The main water pump A, the secondary water pump B and the secondary water pump C are respectively low-power water pumps configured according to actual requirements on site, so that when the terminal equipment in the terminal system B does not operate, the secondary water pump B is closed, the operation of the terminal system C is not influenced, and the energy consumption is also saved.
In order to control the end devices and the secondary water pump, in some embodiments of the present application, each of the end devices is provided with a corresponding line controller, and each of the line controllers is used for controlling the on-off state of the corresponding end device and the secondary water pump.
The wire controller is used by a user to control the operation of the end equipment, one wire controller can control one end equipment and a plurality of end equipment, and can control the end equipment of one room and the end equipment of a plurality of rooms, for example, one wire controller can simultaneously control the ground heating and air disks in two rooms. These are all within the scope of the present invention. And meanwhile, the secondary water pump and the wire controller are in linkage control, and the wire controller can control the starting of the end equipment and can also control the starting of the secondary water pump.
In some embodiments of the present application, in each of the end systems, when any of the end devices is turned on, then the secondary water pump is turned on; when all the end equipment is turned off, the secondary water pump is turned off.
The secondary water pump is in linkage control with the wire controller, at least one terminal device in the terminal system B is started, the wire controller controls the secondary water pump B to be started, and when all the terminal devices in the terminal system B are shut down, the wire controller controls the secondary water pump B to be closed; similarly, end system C or other end systems also have this coordinated control. Through the linkage control of the secondary water pump and the line controller, the normal operation of each terminal device can be ensured, the secondary water pump which does not need to operate can be closed, and the energy consumption is reduced.
In order to control the outdoor unit and the main water pump, in some embodiments of the present application, the outdoor unit includes a controller that controls on and off states of the outdoor unit and the main water pump based on and off states of the respective sub water pumps.
The main water pump A and the outdoor unit are in linkage control, and the controller can be used for controlling the outdoor unit and the main water pump A to operate. And when the end system starts, the secondary water pump is started, and the outdoor unit is required to refrigerate or heat the circulating water. The controller starts the outdoor unit and the main water pump A according to the starting condition of the secondary water pump.
In some embodiments of the present application, when any one of the secondary water pumps is turned on, the outdoor unit and the main water pump are turned on; and when all the secondary water pumps are closed, the outdoor unit and the main water pump are closed.
Because the main system A and the tail end systems B and C are also in linkage control, when at least one of the secondary water pump B or the secondary water pump C is started, the controller controls the outdoor unit and the main water pump A to be started, so that the use of a user is facilitated; when the secondary water pump B and the secondary water pump C are completely closed, the controller controls the outdoor unit and the main water pump A to be closed, and therefore the water machine can be stably operated.
It should be noted that the solution of the above embodiment is only a specific implementation solution proposed by the present application, and other ways of controlling the household water machine of the present invention all belong to the protection scope of the present application.
To further describe the electric control linkage scheme of the household water machine of the present application, in some embodiments of the present application, as shown in fig. 3, the end system further includes a relay, a control circuit of the relay is connected to each of the line controllers, and an output circuit of the relay is connected to the controller and the secondary water pump respectively.
Each end system is provided with a corresponding relay, for example, the relay B is arranged in the end system B, and the relay C is arranged in the end system C, and generally comprises a control circuit and an output circuit, wherein the control circuit controls the on and off of the output circuit, so that the control circuit plays a role in controlling the on and off of other circuits. Typically, the output circuit is closed when the control circuit is powered on and open when the control circuit is powered off. The control circuit of the relay is connected with the wire controller, and the output circuit of the relay is respectively connected with the controller and the secondary water pump. Namely, the line controller in the end system B can correspondingly control the controller and the secondary water pump B in a linkage manner by controlling the switch of the relay B. It should be noted that, the relay can be selected according to actual needs, and other electrical elements with the same switching function are adopted and all belong to the protection scope of the present application.
In some embodiments of the present application, a terminal dry contact is disposed on the line controller, and when the line controller controls the corresponding terminal device to be turned on, the terminal dry contact is turned off; when the wire controller controls the corresponding terminal equipment to be closed, the terminal dry contact is disconnected.
The dry contact is a passive switch, and is divided into an input type dry contact and an output type dry contact, wherein the input type dry contact is a switch of load equipment controlled by the on-off of the dry contact, and the output type dry contact is a switch of the load equipment controlled by the switch of the load equipment. The tail end dry contact on the wire controller is an output type dry contact, and when the wire controller controls the corresponding tail end equipment to be opened, the tail end dry contact is closed; when the wire controller controls the corresponding terminal equipment to be closed, the terminal dry contact is disconnected.
In some embodiments of the present application, in each of the end systems, the end dry contact is connected to the control circuit of the relay, and when any of the end dry contacts is closed, the control circuit of the relay is powered on, the output circuit of the relay is closed, and the secondary water pump is powered on.
The tail end dry contact is connected with the relay, so that when the tail end equipment is started, the tail end dry contact is controlled to be closed, a control circuit of the relay is electrified, and an output circuit of the relay is closed. Because the closing of the power supply circuit of the secondary water pump is controlled by the output circuit of the relay, the linkage starting of the corresponding secondary water pump by the terminal equipment is realized. Namely, the tail end equipment of the tail end system B is provided with at least one starting-up device, the relay B is electrified, and the secondary water pump B is started; the tail end equipment of the tail end system B is completely closed, the relay B is powered off, and the secondary water pump B is closed; the tail end equipment of the tail end system C is provided with at least one starting-up device, the relay C is powered on, and the secondary water pump C is started; and the tail end equipment of the tail end system C is completely closed, the relay C is powered off, and the secondary water pump C is closed.
In some embodiments of the present application, a main contact is disposed on the controller, and when the main contact is closed, the controller controls the outdoor unit and the main water pump to be turned on; when the main contact is disconnected, the controller controls the outdoor unit and the main water pump to be closed.
The main connection point on the controller is an input type main connection point, the on-off of the main connection point influences the control state of the controller, and when the main connection point of the controller is closed, the controller controls the outdoor unit and the main water pump to be started; when the main contact of the controller is disconnected, the controller controls the outdoor unit and the main water pump to stop. It should be noted that, in the present embodiment, only the main connection point is taken as an example to be described on the controller, and the main connection point on the outdoor unit is not necessarily disposed on the controller, and may also be disposed at the main control board end of the outdoor unit, which all fall within the protection scope of the present application.
In some embodiments of the present application, the trunk contact is connected to an output circuit of each of the relays, and when a control circuit of any one of the relays is energized, the output circuit of the relay is closed, and the trunk contact is closed.
The main contact circuit is connected to the output circuits of the respective relays, each of the relays serving as a switch of the main contact circuit and being connected in parallel with each other, and when any one of the relays is energized, the output circuit of the relay is closed even if the main contact is closed. Meanwhile, the on-off of a power supply circuit of the secondary water pump is also controlled by the relay, when at least one of the secondary water pump B and the secondary water pump C is opened, the main contact is closed, the outdoor unit is started, and the main water pump A is opened; and (4) closing all the water pumps B and C, disconnecting the main contact, shutting down the outdoor unit and closing the main water pump A.
It should be noted that the solution of the above embodiment is only a specific implementation solution proposed by the present application, and other electronic control linkage solutions using the household water machine of the present application all belong to the protection scope of the present application.
The invention discloses a household water machine, which comprises a main system, a plurality of tail end systems and a buffer tank, wherein the main system comprises a water inlet pipe, a water outlet pipe and a water outlet pipe; the main system comprises a main water pump and an outdoor unit, and the main water pump, the outdoor unit and the buffer water tank form a main circulation loop; the tail end system comprises a secondary water pump and a plurality of tail end devices, wherein the secondary water pump, each tail end device and the buffer water tank form a secondary circulation loop. By applying the technical scheme of the invention, the water circulation in each water system of the household water machine is relatively independent, and the secondary water pumps do not need to be completely started during operation, thereby saving energy and reducing consumption; and the main system where the outdoor unit is located has small and constant water resistance, is not influenced by the number of the terminal equipment which is actually started, and cannot be stopped due to the fact that the water flow is unstable and the alarm is caused
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application 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; such modifications and substitutions do not necessarily depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (10)
1. A household water machine is characterized by comprising a main system, a plurality of tail end systems and a buffer tank;
the main system comprises a main water pump and an outdoor unit, and the main water pump, the outdoor unit and the buffer water tank form a main circulation loop;
the tail end system comprises a secondary water pump and a plurality of tail end devices, wherein the secondary water pump, each tail end device and the buffer water tank form a secondary circulation loop.
2. The household water machine as claimed in claim 1, wherein each of the end devices is provided with a corresponding wire controller, and each wire controller is used for controlling the on-off state of the corresponding end device and the secondary water pump.
3. The household water machine as claimed in claim 2, wherein in each of the end systems, when any one of the end devices is turned on, the secondary water pump is turned on; when all the end equipment is turned off, the secondary water pump is turned off.
4. The household water machine of claim 2, wherein the outdoor unit comprises a controller that controls on and off states of the outdoor unit and the main water pump based on and off states of the secondary water pumps.
5. The household water machine of claim 4, wherein when any one of the secondary water pumps is turned on, the outdoor unit and the main water pump are turned on; and when all the secondary water pumps are closed, the outdoor unit and the main water pump are closed.
6. The household water machine as claimed in claim 4, wherein the end system further comprises a relay, a control circuit of the relay is connected with each line controller, and an output circuit of the relay is respectively connected with the controller and the secondary water pump.
7. The household water machine as claimed in claim 6, wherein the wire controller is provided with a terminal dry contact, and when the wire controller controls the corresponding terminal device to be opened, the terminal dry contact is closed; when the wire controller controls the corresponding terminal equipment to be closed, the terminal dry contact is disconnected.
8. The household water machine as claimed in claim 7, wherein in each end system, the end dry contact is connected with the control circuit of the relay, when any end dry contact is closed, the control circuit of the relay is powered on, the output circuit of the relay is closed, and the secondary water pump is powered on.
9. The household water machine as claimed in claim 6, wherein the controller is provided with a main contact, and when the main contact is closed, the controller controls the outdoor unit and the main water pump to be opened; when the main contact is disconnected, the controller controls the outdoor unit and the main water pump to be closed.
10. The household water machine as claimed in claim 9, wherein the main contact is connected to the output circuit of each of the relays, and when the control circuit of any one of the relays is energized, the output circuit of the relay is closed, and the main contact is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011025777.5A CN112443904A (en) | 2020-09-25 | 2020-09-25 | Household water machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011025777.5A CN112443904A (en) | 2020-09-25 | 2020-09-25 | Household water machine |
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| Publication Number | Publication Date |
|---|---|
| CN112443904A true CN112443904A (en) | 2021-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011025777.5A Pending CN112443904A (en) | 2020-09-25 | 2020-09-25 | Household water machine |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59225237A (en) * | 1983-06-07 | 1984-12-18 | Kajima Corp | Operation controlling system of air conditioner secondary cooling water pump |
| CN206055827U (en) * | 2016-08-31 | 2017-03-29 | 佛山欧思丹热能科技有限公司 | A kind of novel air source heat pump refrigeration and heating system |
| CN206269282U (en) * | 2016-11-09 | 2017-06-20 | 湖北华工能源股份有限公司 | A kind of multi-connected machine water source heat pump door type central air-conditioning system |
| CN206377791U (en) * | 2017-01-11 | 2017-08-04 | 奥意建筑工程设计有限公司 | A kind of central air-conditioning two stage pump air-conditioner water system |
| CN206861819U (en) * | 2017-06-22 | 2018-01-09 | 青岛海信日立空调系统有限公司 | A kind of air-conditioner control system and air-conditioning |
| CN111219821A (en) * | 2020-02-13 | 2020-06-02 | 青岛海信日立空调系统有限公司 | Household water machine |
| CN212299219U (en) * | 2020-05-07 | 2021-01-05 | 广东智博士系统集成控制有限公司 | Large-scale commercial couple supplies ground temperature regulation changes in temperature radiation frequency conversion module |
-
2020
- 2020-09-25 CN CN202011025777.5A patent/CN112443904A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59225237A (en) * | 1983-06-07 | 1984-12-18 | Kajima Corp | Operation controlling system of air conditioner secondary cooling water pump |
| CN206055827U (en) * | 2016-08-31 | 2017-03-29 | 佛山欧思丹热能科技有限公司 | A kind of novel air source heat pump refrigeration and heating system |
| CN206269282U (en) * | 2016-11-09 | 2017-06-20 | 湖北华工能源股份有限公司 | A kind of multi-connected machine water source heat pump door type central air-conditioning system |
| CN206377791U (en) * | 2017-01-11 | 2017-08-04 | 奥意建筑工程设计有限公司 | A kind of central air-conditioning two stage pump air-conditioner water system |
| CN206861819U (en) * | 2017-06-22 | 2018-01-09 | 青岛海信日立空调系统有限公司 | A kind of air-conditioner control system and air-conditioning |
| CN111219821A (en) * | 2020-02-13 | 2020-06-02 | 青岛海信日立空调系统有限公司 | Household water machine |
| CN212299219U (en) * | 2020-05-07 | 2021-01-05 | 广东智博士系统集成控制有限公司 | Large-scale commercial couple supplies ground temperature regulation changes in temperature radiation frequency conversion module |
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Application publication date: 20210305 |
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