Combined device for improving defrosting efficiency of heat pump

Abstract

The utility model relates to a combined device for improving defrosting efficiency of a heat pump, which comprises a heat pump provided with an evaporator, a four-way valve, a compressor and a fan. The device is characterized by further comprising a control module, an infrared temperature sensing detector and an image detector device, the infrared temperature sensing detector is installed on the heat pump, located beside the evaporator and electrically connected with the control module. Thermal imaging of the infrared temperature sensing detector determines temperature distribution of all parts of the evaporator and transmits signals to the control module. The image detector device is installed on the heat pump, located beside the evaporator and electrically connected with the control module. The image detector device judges whether the fin thickness of the evaporator is increased or not and transmits a signal to the control module. The defrosting device has the advantages that defrosting is started only when the evaporator is frosted to a certain degree to influence normal operation of the heat pump, defrosting efficiency is improved, and the service life of the heat pump is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of combined device for improving heat pump defrosting efficiency. BACKGROUND

[0002] Common phenomenon in the operation process of heat pump, especially in humid or cold weather conditions, when outdoor temperature is lower than dew point temperature, evaporator surface is easy to frost, common defrosting method includes temperature sensor control method, that is, defrosting starts when outdoor evaporator coil temperature drops to frost temperature, until temperature rises to design value stop;In practical application, defrosting process not only needs to consume original supplied heat, but also can lead to further water temperature drop, affect the performance and service life of equipment;Therefore in time, effective defrosting is the key to guarantee normal operation of heat pump, and reasonable defrosting design and technical selection are very important for improving the efficiency of heat pump unit and prolonging service life. SUMMARY

[0003] The utility model aims at overcoming the insufficient of prior art and provides a kind of combined device for improving heat pump defrosting efficiency, defrosting starts when evaporator frost to certain degree affects normal operation of heat pump, improves defrosting efficiency, prolongs heat pump service life.

[0004] In order to achieve the above object, the technical scheme of the combined device for improving heat pump defrosting efficiency of the utility model is realized, which comprises a heat pump, and the heat pump is provided with an evaporator, a four-way valve, a compressor and a fan;Characterized in that

[0005] It further comprises a control module, an infrared temperature sensing detector and an image detector device;

[0006] The infrared temperature sensing detector is installed on the heat pump and located beside the evaporator and electrically connected with the control module, the thermal imaging of the infrared temperature sensing detector determines the temperature distribution of each part of the evaporator and transmits signals to the control module to control the four-way valve, the compressor and the fan;

[0007] The image detector device is installed on the heat pump and located beside the evaporator and electrically connected with the control module, the image detector device judges whether the fin thickness of the evaporator increases and transmits signals to the control module to control the four-way valve, the compressor and the fan.

[0008] In the technical scheme, an infrared temperature sensing detector mounting bracket is further included, the infrared temperature sensing detector mounting bracket is installed on the top of the heat pump, the end of the infrared temperature sensing detector mounting bracket extends outward to the outside of the evaporator, and the infrared temperature sensing detector is installed on the end of the infrared temperature sensing detector mounting bracket to detect the thermal imaging of the evaporator.

[0009] In the technical solution, the camera detector device mounting rack is installed at the middle part of the heat pump, the end of the camera detector device mounting rack extends to the outside of the evaporator, and the camera detector device is installed on the end of the camera detector device mounting rack to detect the fin thickness of the evaporator.

[0010] The utility model discloses compared with prior art has the advantages that defrosting is started when the evaporator frosts to a certain degree and influences the normal operation of the heat pump, improves defrosting efficiency and prolongs the service life of the heat pump. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is the block diagram of the utility model;

[0012] Figure 2 is the perspective view of the utility model. DETAILED DESCRIPTION

[0013] The specific embodiments of the utility model will be further described below in combination with the drawings. It needs to be explained here that the description of these embodiments is used to help understanding the utility model and does not constitute the limitation of the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0014] In the description of the utility model, the orientation or position relationship indicated by the terms "upper", "lower", "top" and "bottom" is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and does not require the utility model to be constructed and operated in a particular orientation, therefore it cannot be understood as the limitation of the utility model.

[0015] In the utility model, unless otherwise explicitly specified and limited, the terms "set", "connect", "locate" and other terms should be understood broadly, for example, can be fixedly connected, can be detachably connected, can be detachably set or integrated, can be mechanically connected, can be directly connected, can be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements, and for ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0016] It is a combined device for improving the defrosting efficiency of the heat pump, comprising a heat pump, wherein the heat pump is provided with an evaporator 1, a four-way valve 2, a compressor 3 and a fan 4;

[0017] Further comprising a control module 5, an infrared temperature detector 6 and an image detector device 7;

[0018] The infrared temperature detector 6 is installed on the heat pump and located beside the evaporator 1 and is electrically connected with the control module 5, the thermal imaging of the infrared temperature detector 6 determines the temperature distribution of each part of the evaporator 1 and transmits signals to the control module 5 so as to control the four-way valve 2, the compressor 3 and the fan 4.

[0019] The image detector device 7 is installed on the heat pump and located beside the evaporator 1 and is electrically connected with the control module 5, the image detector device 7 judges whether the fin thickness of the evaporator is increased and transmits signals to the control module 5 so as to control the four-way valve 2, the compressor 3 and the fan 4.

[0020] The thermal imaging of the infrared temperature detector 6 determines the temperature distribution of each part of the evaporator 1, in the case that the evaporator 1 has frost, the thermal imaging of the evaporator 1 will present the phenomenon of blue color and red color around, when the object below 0℃ in the thermal imaging lasts for 5 minutes, feedback will be given; the image detector device 7 can judge whether the fin thickness of the evaporator 1 is increased, in the case that the heat pump evaporator has frost, the thickness of the evaporator will be greatly increased, the image detector device 7 detects that the fin thickness of the evaporator 1 exceeds 3mm and lasts for 5 minutes, feedback will be given; when the infrared temperature detector 6 and the image detector device 7 both give feedback to the control module 5, the control module 5 controls the four-way valve 2 to open the defrosting mode, and controls the compressor 3 and the fan 4 to be opened.

[0021] When the infrared temperature detector 6 cannot detect the object below 0℃ for 3 minutes, the feedback is disconnected; when the image detector device 7 detects that the fin thickness is the normal thickness of 1mm for 3 minutes, the feedback is disconnected; when the control module 5 receives both feedbacks to be disconnected, the defrosting is ended, and the four-way valve 2 is switched to the normal working mode.

[0022] In the embodiment, the infrared temperature detector mounting rack 61 is further included, the infrared temperature detector 6 mounting rack 61 is installed on the top of the heat pump, the end of the infrared temperature detector mounting rack 61 extends to the outside of the evaporator 1, the infrared temperature detector 6 is installed on the end of the infrared temperature detector mounting rack 61 to detect the thermal imaging of the evaporator 1. The infrared temperature detector 6 can better detect the thermal imaging of the evaporator 1.

[0023] In the embodiment, the camera detector device mounting rack 71 is further included, the camera detector device mounting rack 71 is installed on the middle of the heat pump, the end of the camera detector device mounting rack 71 extends to the outside of the evaporator 1, the camera detector device 7 is installed on the end of the camera detector device mounting rack 71 to detect the fin thickness of the evaporator 1. The camera detector device 7 can better detect the fin thickness of the evaporator 1.

[0024] The embodiments of the present application are described in detail in combination with the drawings, but the present application is not limited to the described embodiments. For those skilled in the art, various changes, modifications, replacements and deformations of the embodiments without departing from the principles and purposes of the present application still fall within the protection scope of the present application.

Claims

1. A combined device for improving the defrosting efficiency of a heat pump, comprising a heat pump, wherein an evaporator (1), a four-way valve (2), a compressor (3) and a fan (4) are arranged on the heat pump; characterized in that a control module (5), an infrared temperature sensing detector (6) and an image detector device (7) are further included; the infrared temperature sensing detector (6) is installed on the heat pump and located beside the evaporator (1) and electrically connected with the control module (5), the thermal imaging of the infrared temperature sensing detector (6) determines the temperature distribution of each part of the evaporator (1) and transmits signals to the control module (5) to control the four-way valve (2), the compressor (3) and the fan (4); the image detector device (7) is installed on the heat pump and located beside the evaporator (1) and electrically connected with the control module (5), the image detector device (7) determines whether the fin thickness of the evaporator is increased and transmits signals to the control module (5) to control the four-way valve (2), the compressor (3) and the fan (4).

2. The combination of claim 1, wherein an infrared temperature sensing detector mounting rack (61) is further included, the infrared temperature sensing detector mounting rack (61) is installed on the top of the heat pump, the end of the infrared temperature sensing detector mounting rack (61) extends outward to the outside of the evaporator (1), and the infrared temperature sensing detector (6) is installed on the end of the infrared temperature sensing detector mounting rack (61) to detect the thermal imaging of the evaporator (1).

3. The combination of claim 1, wherein a camera detector device mounting rack (71) is further included, the camera detector device mounting rack (71) is installed on the middle of the heat pump, the end of the camera detector device mounting rack (71) extends outward to the outside of the evaporator (1), and the camera detector device (7) is installed on the end of the camera detector device mounting rack (71) to detect the fin thickness of the evaporator (1).

Images