技术领域technical field
本发明专利涉及热泵技术领域，更具体的说，是涉及一种低温风冷热泵系统。The patent of the present invention relates to the technical field of heat pumps, and more specifically, relates to a low-temperature air-cooled heat pump system.
背景技术Background technique
随着热泵技术的不断发展，热泵的应用范围越来越广。With the continuous development of heat pump technology, the application range of heat pumps is becoming wider and wider.
在北方大部分地区冬季非常寒冷,在制热工况下，由于温度过低，风冷热泵系统蒸发器内制冷剂不能完全蒸发，造成热泵不启动或液击的危险。低温热泵还存在结霜严重的问题，霜层堵塞了风道，同时加大了空气与制冷剂之间的热阻，极大地影响了热泵的制热效果。Winter is very cold in most parts of the north. Under heating conditions, due to the low temperature, the refrigerant in the evaporator of the air-cooled heat pump system cannot be completely evaporated, resulting in the risk of the heat pump not starting or liquid shock. The low-temperature heat pump also has the problem of severe frosting. The frost layer blocks the air duct and increases the thermal resistance between the air and the refrigerant, which greatly affects the heating effect of the heat pump.
目前，解决热泵不启动或液击问题大都是在蒸发器上布置电加热丝进行加热，提高温度。或是采用变频压缩机等高效压缩机，但增加了成本，同时在温度过低的情况下，热泵系统依然不能启动。At present, most of the solutions to the problem of heat pump not starting or liquid hammering are to arrange electric heating wires on the evaporator for heating to increase the temperature. Or use high-efficiency compressors such as inverter compressors, but the cost is increased. At the same time, the heat pump system still cannot be started when the temperature is too low.
对于结霜严重的问题，目前热泵系统根据霜层达到一定程度时进行除霜，而且除霜时须停止供热，这样系统总供热量下降，供热效果差同时还需消耗大量的电能。融霜水流到底盘上之后会凝结成冰，随着除霜次数的增加，凝结冰量越来越多，最终导致蒸发器下部被堵塞，导致换热无法进行。For the problem of serious frosting, the current heat pump system defrosts when the frost layer reaches a certain level, and the heating must be stopped during defrosting, so that the total heat supply of the system decreases, the heating effect is poor, and a large amount of electric energy is consumed. After the defrosting water flows to the chassis, it will condense into ice. As the number of defrosting increases, the amount of condensed ice will increase, which will eventually cause the lower part of the evaporator to be blocked, resulting in the failure of heat exchange.
发明专利内容Invention patentcontent
本发明专利的目的是针对现有技术中存在的技术缺陷，而提供一种利用系统自身提供的热量有效防止低温气候下风冷热泵低温热泵不启动或液击以及蒸发器结霜严重的现象，提高系统总供热量，提高安全性，同时满足低温运行要求的低温风冷热泵系统。The purpose of the patent of this invention is to solve the technical defects existing in the prior art, and to provide a method of using the heat provided by the system itself to effectively prevent the phenomenon that the low-temperature heat pump of the air-cooled heat pump does not start or the liquid hammer and the evaporator are severely frosted in low-temperature climates. A low-temperature air-cooled heat pump system that increases the total heat supply of the system, improves safety, and meets the requirements for low-temperature operation.
为实现本发明专利的目的所采用的技术方案是：The technical scheme adopted for the purpose of realizing the patent of the present invention is:
一种低温风冷热泵系统，包括压缩机、冷凝器、节流阀、蒸发器、电磁阀和加热管，所述加热管安装于所述蒸发器的底部，所述压缩机的制冷剂出口分别与所述冷凝器和电磁阀的进口连接，所述电磁阀的出口与所述加热管的进口连接，所述加热管的出口与所述冷凝器的出口并联后与所述节流阀的进口连接，所述节流阀的出口与所述蒸发器的进口连接，所述蒸发器的出口与所述压缩机的进口连接。A low-temperature air-cooled heat pump system, including a compressor, a condenser, a throttle valve, an evaporator, a solenoid valve and a heating pipe, the heating pipe is installed at the bottom of the evaporator, and the refrigerant outlets of the compressor are respectively It is connected with the inlet of the condenser and the solenoid valve, the outlet of the solenoid valve is connected with the inlet of the heating pipe, and the outlet of the heating pipe is connected with the inlet of the throttle valve in parallel with the outlet of the condenser The outlet of the throttle valve is connected with the inlet of the evaporator, and the outlet of the evaporator is connected with the inlet of the compressor.
所述蒸发器的出口管道上安装有温度传感器，所述温度传感器的信号输出端与控制器连接，所述控制器的控制端与所述电磁阀连接。A temperature sensor is installed on the outlet pipe of the evaporator, the signal output end of the temperature sensor is connected with the controller, and the control end of the controller is connected with the solenoid valve.
与现有技术相比，本发明专利的有益效果是：Compared with the prior art, the beneficial effects of the patent of the present invention are:
本发明专利的热泵系统通过分流设置，在压缩机的出口分流一部分高温气体经过电磁阀进入蒸发器底部加热管，加热管通过蒸发器底部的翅片将热量传导至蒸发器的上部，提高了蒸发器中制冷剂的温度，保持合理的热泵运行工况，实现低温启动和不发生液击。同时，使系统在不停止供热的同时防止蒸发器结霜严重，提高COP值，达到提高总供热量目的。另外，由于加热管的能量由系统自身提供，可以实现降低能耗和环保的目的。The patented heat pump system of the present invention is set by splitting, and a part of the high-temperature gas is diverted at the outlet of the compressor through the solenoid valve and enters the heating tube at the bottom of the evaporator. The heating tube conducts heat to the upper part of the evaporator through the fins at the bottom of the evaporator, improving evaporation The temperature of the refrigerant in the heat pump can be controlled to maintain a reasonable operating condition of the heat pump to achieve low-temperature start-up and no liquid shock. At the same time, the system can prevent serious frosting of the evaporator without stopping the heat supply, increase the COP value, and achieve the purpose of increasing the total heat supply. In addition, since the energy of the heating pipe is provided by the system itself, the goals of reducing energy consumption and environmental protection can be achieved.
附图说明Description of drawings
图1所示为本发明专利低温风冷热泵系统的原理图。Fig. 1 is a schematic diagram of the patented low-temperature air-cooled heat pump system of the present invention.
具体实施方式Detailed ways
以下结合附图和具体实施例对本发明专利作进一步详细说明。The patent of the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
本发明专利低温风冷热泵系统的原理图如图1所示，包括压缩机1、冷凝器3、节流阀4、蒸发器5、电磁阀2和加热管6，所述加热管6安装于所述蒸发器5的底部，通过加热管加热蒸发器底部的翅片将热量传递到蒸发器内的制冷剂，所述压缩机1的制冷剂出口分别与所述冷凝器3和电磁阀2的进口连接，所述电磁阀2的出口与所述加热管6的进口连接，所述加热管6的出口与所述冷凝器3的出口并联后与所述节流阀4的进口连接，所述节流阀4的出口与所述蒸发器5的进口连接，所述蒸发器5的出口与所述压缩机1的进口连接。The principle diagram of the patented low-temperature air-cooled heat pump system of the present invention is shown in Figure 1, including a compressor 1, a condenser 3, a throttle valve 4, an evaporator 5, a solenoid valve 2 and a heating pipe 6, and the heating pipe 6 is installed on The bottom of the evaporator 5 heats the fins at the bottom of the evaporator through heating tubes to transfer heat to the refrigerant in the evaporator, and the refrigerant outlet of the compressor 1 is connected to the condenser 3 and the electromagnetic valve 2 respectively. The outlet of the solenoid valve 2 is connected to the inlet of the heating pipe 6, and the outlet of the heating pipe 6 is connected to the inlet of the throttle valve 4 in parallel with the outlet of the condenser 3. The outlet of the throttle valve 4 is connected with the inlet of the evaporator 5 , and the outlet of the evaporator 5 is connected with the inlet of the compressor 1 .
所述蒸发器5的出口管道上安装有温度传感器，所述温度传感器的信号输出端与控制器连接，所述控制器的控制端与所述电磁阀2连接。通过检测蒸发器出口的温度，控制电磁阀的开启度，从而调节加热量的大小。A temperature sensor is installed on the outlet pipe of the evaporator 5 , the signal output end of the temperature sensor is connected with the controller, and the control end of the controller is connected with the electromagnetic valve 2 . By detecting the temperature at the outlet of the evaporator, the opening degree of the solenoid valve is controlled to adjust the amount of heating.
本发明专利的热泵系统通过分流设置，在压缩机的出口分流一部分高温气体经过电磁阀进入蒸发器底部的加热管，加热管通过蒸发器底部的翅片将热量传导至蒸发器内的制冷剂中，提高蒸发器中制冷剂的温度。电磁阀的开启度根据蒸发器出口温度的大小调节，从而根据蒸发器运行工况调节加热量大小，保持合理的热泵运行工况，实现低温启动和不发生液击，同时在不停止供热的同时防止蒸发器结霜严重，提高COP值，达到提高总供热量目的。另外，由于加热管的能量由系统自身提供，可以实现降低能耗和环保的目的。在冬季温度较高时，电磁阀关闭进行常规热泵运行。The heat pump system of the patent of the present invention adopts the split flow setting, and a part of the high-temperature gas is split at the outlet of the compressor and enters the heating tube at the bottom of the evaporator through the solenoid valve, and the heating tube conducts heat to the refrigerant in the evaporator through the fins at the bottom of the evaporator , to increase the temperature of the refrigerant in the evaporator. The opening degree of the solenoid valve is adjusted according to the outlet temperature of the evaporator, so as to adjust the heating capacity according to the operating conditions of the evaporator, maintain a reasonable operating condition of the heat pump, realize low-temperature startup and no liquid shock, and at the same time, without stopping the heating At the same time, prevent serious frosting of the evaporator, increase the COP value, and achieve the purpose of increasing the total heat supply. In addition, since the energy of the heating pipe is provided by the system itself, the goals of reducing energy consumption and environmental protection can be achieved. When the temperature is high in winter, the solenoid valve is closed for normal heat pump operation.
本发明专利的低温热泵系统适用于低温寒冷地区。The patented low-temperature heat pump system of the present invention is suitable for low-temperature cold regions.
以上所述仅是本发明专利的优选实施方式，应当指出的是，对于本技术领域的普通技术人员来说，在不脱离本发明专利原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明专利的保护范围。The above is only the preferred embodiment of the patent of the present invention. It should be pointed out that for those of ordinary skill in the art, some improvements and modifications can be made without departing from the principles of the patent of the present invention. Improvements and modifications should also be considered as the protection scope of the patent for the present invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510648915.8ACN105135728A (en) | 2015-10-10 | 2015-10-10 | Low-temperature air-cooled heat pump system |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510648915.8ACN105135728A (en) | 2015-10-10 | 2015-10-10 | Low-temperature air-cooled heat pump system |
| Publication Number | Publication Date |
|---|---|
| CN105135728Atrue CN105135728A (en) | 2015-12-09 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510648915.8APendingCN105135728A (en) | 2015-10-10 | 2015-10-10 | Low-temperature air-cooled heat pump system |
| Country | Link |
|---|---|
| CN (1) | CN105135728A (en) |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | Application publication date:20151209 |