Floor heating air conditioner

Abstract

The utility model relates to the technical field of floor heating air conditioners, particularly provides a floor heating air conditioner, and aims to solve the problem of blockage of an electronic expansion valve in an existing floor heating air conditioner system. To this end, the floor heating air conditioner of the present application comprises: an outdoor unit; the floor heating pipeline is connected with the outdoor unit, and the floor heating pipeline comprises an indoor heat exchanger and a flow regulating valve which are sequentially arranged in the refrigerant flowing direction; the first temperature sensor is arranged in the floor heating pipeline in a communicating manner and is close to the flow regulating valve; and the controller is in communication connection with the flow regulating valve, and the controller controls the opening degree of the flow regulating valve according to the detection value of the first temperature sensor. According to the floor heating air conditioning system, the running state of the electronic expansion valve can be monitored and adjusted in real time, the problem that the electronic expansion valve is blocked is effectively solved, and therefore it is ensured that the floor heating air conditioning system continuously and efficiently provides a comfortable and stable heating environment, and the indoor heating experience of a user is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of floor heating air conditioning, and specifically provides a floor heating air conditioner. BACKGROUND

[0002] The floor heating air conditioning system is an integrated air conditioning device integrating air conditioning and floor heating functions. The floor heating air conditioning system realizes efficient winter heating by setting capillary tubes in the floor layer and combining the heating principles of floor heating and air conditioning systems. In the heating mode, the compressor in the outdoor unit compresses the low-temperature and low-pressure refrigerant into high-temperature and high-pressure gaseous refrigerant, which then enters the capillary tube network laid under the floor. These capillary tubes uniformly radiate heat energy to the entire indoor space through heat exchange, continuously heat through ground heat conduction, and provide a comfortable and warm indoor environment.

[0003] In the floor heating air conditioning system, the electronic expansion valve is responsible for controlling the flow and pressure of the refrigerant to ensure efficient operation of the system. However, due to the influence of impurities in the refrigerant, the electronic expansion valve is prone to clogging, which becomes an important challenge in system maintenance. These impurities may come from the impurity of the refrigerant or the accumulation of particles inside the system, and once they enter the electronic expansion valve, they can cause the internal passage of the valve to narrow or even completely block. The clogging of the electronic expansion valve not only reduces the heating efficiency of the system, but also can cause other faults such as unstable pressure or interruption of the refrigeration cycle, thereby affecting the overall heating effect and the service life of the equipment.

[0004] Therefore, there is a need in the art for a new technical solution to solve the above problems. UTILITY MODEL CONTENT

[0005] The present application aims to solve the above technical problems, i.e., to solve the clogging problem of the electronic expansion valve in the existing floor heating air conditioning system.

[0006] The present application provides a floor heating air conditioner, comprising:

[0007] an outdoor unit;

[0008] a floor heating pipeline connected to the outdoor unit, the floor heating pipeline comprising an indoor heat exchanger and a flow regulating valve arranged in sequence along the flow direction of the refrigerant;

[0009] a first temperature sensor communicatively arranged in the floor heating pipeline and located close to the flow regulating valve;

[0010] a controller communicatively connected to the flow regulating valve, the controller controlling the opening degree of the flow regulating valve according to the detection value of the first temperature sensor.

[0011] Optionally, the first temperature sensor is located between the indoor heat exchanger and the flow regulating valve.

[0012] Optionally, the first temperature sensor is located between the flow regulating valve and the outdoor unit.

[0013] Optionally, the floor heating air conditioner further comprises:

[0014] a second temperature sensor for detecting indoor temperature, the second temperature sensor being electrically connected to the controller, the controller controlling the opening degree of the flow regulating valve according to the detection value of the second temperature sensor and the detection value of the first temperature sensor.

[0015] Optionally, the floor heating air conditioner further comprises:

[0016] an indoor unit connected to the outdoor unit and arranged in parallel with the floor heating pipeline.

[0017] Optionally, the second temperature sensor is arranged close to the air inlet of the indoor unit.

[0018] Optionally, the flow regulating valve is an electronic expansion valve.

[0019] Optionally, a plurality of floor heating pipelines are arranged in parallel.

[0020] Optionally, the floor heating pipeline comprises a plurality of indoor heat exchangers, and the plurality of indoor heat exchangers are connected in parallel between the outdoor unit and the flow regulating valve.

[0021] Optionally, the indoor heat exchanger is a heat exchange copper pipe.

[0022] In the case of adopting the above technical solution, the floor heating air conditioner system of the present application can monitor and adjust the running state of the electronic expansion valve in real time, effectively solve the problem of electronic expansion valve blockage, thereby ensuring that the floor heating air conditioner system continuously and efficiently provides a comfortable and stable heating environment, and improving the indoor heating experience of users. BRIEF DESCRIPTION OF DRAWINGS

[0023] The preferred embodiments of the present application will be described below with reference to the accompanying drawings, in which:

[0024] Figure 1 is one of the structure schematic diagrams of the floor heating air conditioner according to an embodiment of the present application;

[0025] Figure 2 is another of the structure schematic diagrams of the floor heating air conditioner according to an embodiment of the present application;

[0026] Figure 3 is a third of the structure schematic diagrams of the floor heating air conditioner according to an embodiment of the present application.

[0027] List of reference signs:

[0028] 11 - outdoor unit, 12 - floor heating pipe, 121 - indoor heat exchanger, 122 - flow regulating valve, 123 - first temperature sensor, 13 - second temperature sensor, 14 - indoor unit. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present application will be described below with reference to the accompanying drawings. Those skilled in the art will understand that these embodiments are only used to explain the technical principles of the present application, and are not used to limit the protection scope of the present application. Those skilled in the art can make adjustments as needed to adapt to specific application occasions.

[0030] It should be noted that in the description of the present application, the terms "up", "down", "left", "right", "in", "out" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the related devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the ordinal numbers "first", "second" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0031] In addition, it should be noted that in the description of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0032] The floor heating air conditioner sets capillary pipes in the floor layer, which can realize efficient winter heating by combining the heating principles of floor heating and air conditioning systems. However, in the floor heating air conditioner, the flow regulating valve is easily blocked by impurities in the refrigerant, which significantly reduces the efficiency of the floor heating air conditioner system and affects the heating effect.

[0033] The present application aims to solve the problem of blockage of the flow regulating valve in the floor heating air conditioner, and aims to ensure that the flow regulating valve can remain unblocked for a long time by introducing an automatic detection and cleaning mechanism, thereby improving the operating efficiency and service life of the entire floor heating air conditioner system.

[0034] Specifically, please refer to Figure 1 for a schematic block diagram of the floor heating air conditioner according to an embodiment of the present application. The floor heating air conditioner provided by the present application includes an outdoor unit 11 and an indoor floor heating pipe 12.

[0035] The outdoor unit 11 mainly includes a compressor, a condenser, and a throttling device, etc. The floor heating pipeline 12 is connected to the refrigerant pipeline and sequentially provided with an indoor heat exchanger 121 and a flow regulating valve 122 along the refrigerant flow direction. The indoor heat exchanger 121 is responsible for transferring the heat of the refrigerant to the floor and indoor air, and the flow regulating valve 122 is used to accurately control the flow of the refrigerant to achieve the best indoor temperature control.

[0036] In the heating mode, the compressor in the outdoor unit 11 compresses the low-temperature and low-pressure refrigerant into high-temperature and high-pressure gaseous refrigerant and delivers it to the floor heating pipeline 12. The indoor heat exchanger 121 in the floor heating pipeline 12 is responsible for transferring the heat of the liquid refrigerant to the floor to warm it up.

[0037] The indoor heat exchanger 121 is mainly composed of capillary tubes, which are usually heat exchange copper tubes. Because copper tubes have excellent heat conductivity and strong corrosion resistance, and the price is also relatively reasonable, copper tubes are widely used in refrigeration and air conditioning systems.

[0038] Further, the capillary tubes are uniformly laid under the floor and cover the entire heating area in a serpentine or spiral layout, ensuring uniform distribution of indoor temperature. These capillary tubes uniformly radiate heat energy to the entire indoor space through heat exchange, continuously heating through floor conduction, thereby providing a comfortable and warm environment for the indoor.

[0039] In one embodiment, referring to Figure 2 , the floor heating pipeline 12 is provided with multiple pipelines in parallel to achieve uniform heating distribution in the space. Specifically, for example, when there are many indoor rooms, to ensure that each room can obtain appropriate heating effect, an independent floor heating pipeline 12 is laid in each room.

[0040] This way not only improves the accuracy of heating, but also facilitates individual control of the temperature of each room to meet individual needs. In addition, the parallel design of multiple pipelines helps to balance the system load and enhance overall stability, thereby improving the comfort and energy efficiency of the residence.

[0041] In another embodiment, referring to Figure 3 , multiple indoor heat exchangers 121 are connected in the floor heating pipeline 12. These heat exchangers are arranged in parallel between the outdoor unit 11 and the flow regulating valve 122 to optimize the heat energy transfer in large indoor spaces.

[0042] This design is particularly suitable for environments that require uniform heating effect, such as large rooms, through multiple parallel indoor heat exchangers 121, heat energy can be more evenly distributed to various areas of the indoor, ensuring temperature consistency. Multiple indoor heat exchangers 121 (such as capillary tubes) share one flow regulating valve 122, simplifying the design of the control system, reducing cost and complexity.

[0043] In an implementable embodiment, the flow regulating valve 122 is preferably an electronic expansion valve.

[0044] An electronic expansion valve works through two core parts, the coil and the valve body. The valve body contains components such as a stainless steel shell, a magnet rotor, etc. The coil is wound with wire on an insulating tube. The rotor is a permanent magnet driven to rotate by the stator magnetic pole. The coil main board applies a pulse voltage to the motor stator winding to drive the rotor to act. The controller controls the forward and reverse rotation of the motor by changing the direction of the pulse signal, thereby adjusting the valve needle opening degree to achieve precise flow adjustment.

[0045] In this embodiment, the electronic expansion valve is used as the flow regulating valve 122, which not only can accurately control the flow in the refrigeration system, improve the energy efficiency and stability of the system, but also can adapt to different working conditions, optimize the system response speed and control accuracy.

[0046] Further, as mentioned above, the electronic expansion valve is easily clogged by impurities in the refrigerant, causing the passage to narrow or completely block. This clogging phenomenon can significantly reduce the efficiency of the floor heating air conditioning system and affect the heating effect.

[0047] Therefore, the floor heating pipeline 12 of the present embodiment is further provided with a first temperature sensor 123, which is arranged near the electronic expansion valve. The controller detects the refrigerant temperature near the electronic expansion valve through the first temperature sensor 123, and judges whether the electronic expansion valve is clogged according to the detection value of the first temperature sensor 123.

[0048] Specifically, when the electronic expansion valve is clogged, the refrigerant cannot enter the electronic expansion valve normally, causing poor circulation of the refrigerant in the floor heating pipeline 12. In this case, the capillary tube, as an important component of the indoor heat exchanger 121, will not be able to effectively exchange heat with the indoor environment.

[0049] At this time, in the heating mode, the temperature at the inlet end of the capillary tube is as high as 60-70 degrees Celsius, and due to the inability to exchange heat normally, the temperature at the outlet end of the capillary tube will be close to the indoor temperature. The first temperature sensor 123 transmits the detected data to the controller for analysis, thereby confirming that the electronic expansion valve is clogged.

[0050] On the other hand, if the electronic expansion valve is not clogged, the floor heating pipeline 12 will remain unobstructed, and the refrigerant can flow smoothly and exchange heat with the indoor environment through the capillary tube. In this case, the temperature at the outlet end of the capillary tube is close to or slightly lower than the temperature at the inlet end, usually between 50 and 60 degrees Celsius, except for a small loss. This temperature difference can be captured in real time by the first temperature sensor 123 and transmitted to the controller for analysis to confirm that the electronic expansion valve is not clogged and the floor heating pipeline 12 is in normal operation.

[0051] Further, the controller is also in communication with the electronic expansion valve, and when the controller determines that the electronic expansion valve may be clogged based on the detection value of the first temperature sensor 123, the controller controls the opening of the electronic expansion valve to increase, thereby significantly increasing the refrigerant flow through the electronic expansion valve. This large flow of refrigerant can forcefully flush away any impurities or deposits that may clog the valve, effectively restoring the unobstructed state of the valve.

[0052] In a specific embodiment, when the heating mode of the floor heating system has been running continuously for at least 10 minutes, it indicates that the key components in the system, including but not limited to the compressor, heat exchanger, circulating pump, and temperature sensor, have all been successfully started and are in a stable running state.

[0053] The controller of the floor heating system monitors the system operation state by reading the detection value of the first temperature sensor 123 in real time. When the controller detects that the reading of the sensor is close to the indoor temperature, especially with a difference of 5 degrees or less from the indoor temperature, and this state continues stably for 3 to 5 minutes, the controller will determine that the electronic expansion valve may have been clogged. Once the clogging is determined, the controller will immediately start the program to increase the opening of the electronic expansion valve.

[0054] Specifically, first, the controller will increase the target opening by an additional 150 PLS (Pulse Output Command), which can significantly increase the refrigerant flow through the electronic expansion valve, aiming to use the large flow to flush the potential clogging. After performing this action, the controller will restore the opening of the electronic expansion valve to the initial target setting value for a short period of time.

[0055] Next, the controller will control the valve opening to increase by 145 PLS after 1 minute, to further enhance the flushing effect on the potential clogging of the valve. As in the previous step, after performing this additional opening adjustment, the controller will immediately restore the valve opening to the target opening again.

[0056] After these actions are completed, the controller enters an evaluation phase, again by obtaining the detection value of the first temperature sensor 123 to determine the running state of the floor heating pipeline 12, and through these data, it is determined whether the blockage of the valve has been successfully cleaned or whether further actions are still needed.

[0057] If the evaluation result shows that the valve function has returned to normal, and the detection value of the first temperature sensor 123 and other key parameters remain within the ideal range, the controller will continue to maintain the current target opening and restore the normal monitoring mode.

[0058] If the evaluation finds that there are still minor performance problems, the controller may start further fine-tuning measures. Through this dynamic and comprehensive evaluation mechanism, the floor heating air conditioning system can quickly respond and solve the blockage problem of the electronic expansion valve to ensure the normal operation of the system, so that the floor heating pipeline 12 can continuously provide a comfortable and stable indoor environment.

[0059] In summary, the floor heating air conditioner provided in the present application can monitor and adjust the running state of the electronic expansion valve in real time through the integration of sensing technology, precise control algorithm and adaptive adjustment mechanism. This design not only effectively solves the existing blockage problem of the electronic expansion valve, but also ensures that the floor heating air conditioning system can continuously and efficiently provide a comfortable and stable heating environment for users, thereby realizing a more efficient and comfortable indoor heating experience.

[0060] In one embodiment, the first temperature sensor 123 is located between the indoor heat exchanger 121 (such as a capillary tube) and the electronic expansion valve, and is arranged close to the input end of the electronic expansion valve.

[0061] In another embodiment, the first temperature sensor 123 is located between the electronic expansion valve and the outdoor unit 11, and is arranged close to the output end of the electronic expansion valve.

[0062] The above two position selections enable the first sensor to more accurately obtain the refrigerant temperature near the electronic expansion valve and transmit this detection value to the controller in real time, so that the system can realize real-time monitoring of the running state of the electronic expansion valve, thereby effectively identifying possible blockage problems.

[0063] Based on the significant difference in indoor temperature between the north and south in winter, the floor heating air conditioning system in this embodiment further comprises a second temperature sensor 13 electrically connected to the controller, and the second temperature sensor 13 is used to detect the indoor temperature, so that the controller can more accurately obtain the indoor temperature, and control the opening of the electronic expansion valve according to the difference between the detection value of the second temperature sensor 13 and the detection value of the first temperature sensor 123.

[0064] Specifically, in the cold winter of the north, the indoor temperature can drop to an extremely low range of -10 to 0 degrees Celsius. In this context, if the detection value of the first temperature sensor 123 obtained by the controller is also close to this temperature range (-10 to 0 degrees Celsius), it can be judged that the electronic expansion valve is blocked.

[0065] On the contrary, in the winter of the south where the temperature is relatively mild, the indoor temperature usually maintains in the range of 0 to 10 degrees Celsius. In this case, if the detection value of the first temperature sensor 123 obtained by the controller is also close to this temperature range (0 to 10 degrees Celsius), it can be judged that the electronic expansion valve is blocked.

[0066] Through this intelligent identification and judgment mechanism for different seasons and regions, the floor heating air conditioning system can ensure that the system can maintain efficient and stable operation in both the north and the south, providing users with a continuous comfortable indoor environment.

[0067] In one embodiment, the floor heating air conditioning system further comprises an indoor unit 14 connected with the outdoor unit 11 and arranged in parallel with the floor heating pipeline 12.

[0068] Through this parallel arrangement, the system can freely switch or simultaneously use the two heating modes according to actual needs. For example, in the initial heating stage, the rapid heating function of the indoor unit 14 can be mainly relied on to quickly raise the indoor temperature. Then, the floor heating pipeline 12 gradually maintains the persistent ground temperature to ensure the persistent constant temperature of the entire room.

[0069] In addition, in summer, the multifunctional design of the floor heating air conditioning system also plays an important role. Through the intelligent control of the indoor unit 14, the system can easily switch to the cooling mode, increasing the universality and practical application value of the whole year. When the ambient temperature rises and the user wants to enjoy a cool indoor environment, the system can operate in the cooling mode.

[0070] In the cooling mode, the outdoor unit 11 absorbs heat from the outdoor air and discharges heat to the outdoor through the refrigeration cycle. At the same time, the indoor unit 14 distributes the cooled air evenly to various spaces in the room through the air supply system. The rapid propagation of this cooled air makes the indoor temperature drop rapidly to the set value, ensuring that the indoor environment remains cool and comfortable in the high-temperature season.

[0071] Through this flexible switching mechanism, the floor heating air conditioning system not only has the ability to heat in winter, but also can efficiently cool in summer, greatly expanding its application range. This multifunctional system saves users the cost of purchasing and maintaining independent heating and cooling equipment, and realizes the dual demand of winter heating and summer cooling in one device.

[0072] In one embodiment, the second temperature sensor is arranged close to the air inlet of the indoor unit 14 to improve the accuracy of indoor temperature detection and reduce the interference of external environmental variables.

[0073] Meanwhile, through such precise detection and intelligent response mechanism, the floor heating air conditioning system can intelligently adjust the operation mode according to the accurate real-time data, ensuring that users can enjoy comfortable and consistent indoor environment throughout the year.

[0074] So far, the technical solutions of the present application have been described in combination with the preferred embodiments shown in the drawings, but it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to the related technical features without departing from the principles of the present application, and the technical solutions after such changes or replacements will fall within the protection scope of the present application.

Claims

1. A floor heating and air conditioning apparatus, characterized by comprising: Comprise: An outdoor unit; A floor heating pipeline connected with the outdoor unit, the floor heating pipeline comprising an indoor heat exchanger and a flow regulating valve arranged in sequence along a refrigerant flow direction; A first temperature sensor arranged in communication in the floor heating pipeline and close to the flow regulating valve; A controller in communication connection with the flow regulating valve, the controller controlling an opening degree of the flow regulating valve according to a detection value of the first temperature sensor.

2. The floor air conditioner of claim 1, wherein, The first temperature sensor is located between the indoor heat exchanger and the flow regulating valve.

3. The floor air conditioner of claim 1, wherein The first temperature sensor is located between the flow regulating valve and the outdoor unit.

4. The floor air conditioner of claim 1, wherein The floor heating air conditioner further comprises: A second temperature sensor for detecting an indoor temperature, the second temperature sensor being in electrical connection with the controller, the controller controlling the opening degree of the flow regulating valve according to a detection value of the second temperature sensor and a detection value of the first temperature sensor.

5. The floor air conditioner of claim 4, wherein The floor heating air conditioner further comprises: An indoor unit connected with the outdoor unit and arranged in parallel with the floor heating pipeline.

6. The floor air conditioner of claim 5, wherein The second temperature sensor is arranged close to an air inlet of the indoor unit.

7. The floor air conditioner of claim 1, wherein The flow regulating valve is an electronic expansion valve.

8. The floor air conditioner of claim 1, wherein, The floor heating pipeline is arranged in parallel with multiple pipelines.

9. The floor air conditioner of claim 1, wherein, The floor heating pipeline comprises multiple indoor heat exchangers, and the multiple indoor heat exchangers are connected in parallel between the outdoor unit and the flow regulating valve.

10. The floor air conditioner of claim 1, wherein, The indoor heat exchanger is a heat exchange copper pipe.

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